RPC server for API Interface (#1276)

* saving: implementing internal api shared by cli and rpc server

* writing async rpc methods and using arc for shared struct references

* cleaning up, renamed Init to Context

* saving: cleaning up and initial work for tests

* Respond with bitcoin withdraw txid

* Print RPC server address

* Cleanup, formatting, add `get_seller`, `get_swap_start_date` RPC endpoints

* fixing tests in cli module

* uncommenting and fixing more tests

* split api module and propagate errors with rpc server

* moving methods to api and validating addresses for rpc

* add broadcast channel to handle shutdowns gracefully and prepare for RPC server test

* added files

* Update rpc.rs

* adding new unfinished RPC tests

* updating rpc-server tests

* fixing warnings

* fixing formatting and cargo clippy warnings

* fix missing import in test

* fix: add data_dir to config to make config command work

* set server listen address manually and return file locations in JSON on Config

* Add called api method and swap_id to tracing for context, reduced boilerplate

* Pass server_address properly to RpcServer

* Update Cargo.lock

* dprint fmt

* Add cancel_refund RPC endpoint

* Combine Cmd and Params

* Disallow concurrent swaps

* Use RwLock instead of Mutex to allow for parallel reads and add get_current_swap endpoint

* Return wallet descriptor to RPC API caller

* Append all cli logs to single log file

After careful consideration, I've concluded that it's not practical/possible to ensure that the previous behaviour (one log file per swap) is preserved due to limitations of the tracing-subscriber crate and a big in the built in JSON formatter

* Add get_swap_expired_timelock timelock, other small refactoring

- Add get_swap_expired_timelock endpoint to return expired timelock if one exists. Fails if bitcoin lock tx has not yet published or if swap is already finished.
- Rename current_epoch to expired_timelock to enforce consistent method names
- Add blocks left until current expired timelock expires (next timelock expires) to ExpiredTimelock struct
- Change .expect() to .unwrap() in rpc server method register because those will only fail if we register the same method twice which will never happen

* initiating swaps in a separate task and handling shutdown signals with broadcast queues

* Replace get_swap_start_date, get_seller, get_expired_timelock with one get_swap_info rpc method

* WIP: Struct for concurrent swaps manager

* Ensure correct tracing spans

* Add note regarding Request, Method structs

* Update request.rs

* Add tracing span attribute log_reference_id to logs caused by rpc call

* Sync bitcoin wallet before initial max_giveable call

* use Span::current() to pass down to tracing span to spawned tasks

* Remove unused shutdown channel

* Add `get_monero_recovery_info` RPC endpoint

- Add `get_monero_recovery_info` RPC endpoint
- format PrivateViewKey using Display

* Rename `Method::RawHistory` to `Method::GetRawStates`

* Wait for swap to be suspended after sending signal

* Remove notes

* Add tracing span attribute log_reference_id to logs caused by rpc call

* Sync bitcoin wallet before initial max_giveable call

* use Span::current() to pass down to tracing span to spawned tasks

* Remove unused shutdown channel

* Add `get_monero_recovery_info` RPC endpoint

- Add `get_monero_recovery_info` RPC endpoint
- format PrivateViewKey using Display

* Rename `Method::RawHistory` to `Method::GetRawStates`

* Wait for swap to be suspended after sending signal

* Return additonal info on GetSwapInfo

* Update wallet.rs

* fix compile issues for tests and use serial_test crate

* fix rpc tests, only check for RPC errors and not returned values

* Rename `get_raw_history` tp `get_raw_states`

* Fix typo in rpc server stopped tracing log

* Remove unnecessary success property on suspend_current_swap response

* fixing test_cli_arguments and other tests

* WIP: RPC server integration tests

* WIP: Integration tests for RPC server

* Update rpc tests

* fix compile and warnings in tests/rpc.rs

* test: fix assert

* clippy --fix

* remove otp file

* cargo clippy fixes

* move resume swap initialization code out of spawned task

* Use `in_current_span` to pass down tracing span to spawned tasks

* moving buy_xmr initialization code out of spawned tasks

* cargo fmt

* Moving swap initialization code inside tokio select block to handle swap lock release logic

* Remove unnecessary swap suspension listener from determine_btc_to_swap call in BuyXmr

* Spawn event loop before requesting quote

* Release swap lock after receiving shutdown signal

* Remove inner tokio::select in BuyXmr and Resume

* Improve debug text for swap resume

* Return error to API caller if bid quote request fails

* Print error if one occurs during process invoked by API call

* Return bid quote to API caller

* Use type safe query! macro for database retrieval of states

* Return tx_lock_fee to API caller on GetSwapInfo call

Update request.rs

* Allow API caller to retrieve last synced bitcoin balane and avoid costly sync

* Return restore height on MoneroRecovery command to API Caller

* Include entire error cause-chain in API response

* Add span to bitcoin wallet logs

* Log event loop connection properties as tracing fields

* Wait for background tasks to complete before exiting CLI

* clippy

* specify sqlx patch version explicitly

* remove mem::forget and replace with _guard

* ci: add rpc test job

* test: wrap rpc test in #[cfg(test)]

* add missing tokio::test attribute

* fix and merge rpc tests, parse uuuid and multiaddr from serde_json value

* default Tor socks port to 9050, Cargo fmt

* Update swap/sqlite_dev_setup.sh: add version

Co-authored-by: Byron Hambly <byron@hambly.dev>

* ci: free up space on ubuntu test job

* Update swap/src/bitcoin/wallet.rs

Co-authored-by: Byron Hambly <byron@hambly.dev>

* Update swap/src/bitcoin/wallet.rs

Co-authored-by: Byron Hambly <byron@hambly.dev>

* fmt

---------

Co-authored-by: binarybaron <86064887+binarybaron@users.noreply.github.com>
Co-authored-by: Byron Hambly <byron@hambly.dev>

.github/workflows/ci.yml

@@ -175,6 +175,17 @@ jobs:
       - name: Run test ${{ matrix.test_name }}
         run: cargo test --package swap --all-features --test ${{ matrix.test_name }} -- --nocapture
 
+  rpc_tests:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v4.1.1
+
+      - uses: Swatinem/rust-cache@v2.7.1
+
+      - name: Run RPC server tests
+        run: cargo test --package swap --all-features --test rpc -- --nocapture
+
   check_stable:
     runs-on: ubuntu-latest
     steps:

Cargo.lock

@@ -143,6 +143,15 @@ dependencies = [
  "tokio",
 ]
 
+[[package]]
+name = "async-lock"
+version = "2.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fa24f727524730b077666307f2734b4a1a1c57acb79193127dcc8914d5242dd7"
+dependencies = [
+ "event-listener",
+]
+
 [[package]]
 name = "async-trait"
 version = "0.1.80"
@@ -308,6 +317,15 @@ version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d86b93f97252c47b41663388e6d155714a9d0c398b99f1005cbc5f978b29f445"
 
+[[package]]
+name = "beef"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3a8241f3ebb85c056b509d4327ad0358fbbba6ffb340bf388f26350aeda225b1"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "big-bytes"
 version = "1.0.0"
@@ -519,6 +537,16 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "771fe0050b883fcc3ea2359b1a96bcfbc090b7116eae7c3c512c7a083fdf23d3"
 
+[[package]]
+name = "bstr"
+version = "1.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6798148dccfbff0fae41c7574d2fa8f1ef3492fba0face179de5d8d447d67b05"
+dependencies = [
+ "memchr",
+ "serde",
+]
+
 [[package]]
 name = "bumpalo"
 version = "3.6.1"
@@ -1479,6 +1507,19 @@ dependencies = [
  "url",
 ]
 
+[[package]]
+name = "globset"
+version = "0.4.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "029d74589adefde59de1a0c4f4732695c32805624aec7b68d91503d4dba79afc"
+dependencies = [
+ "aho-corasick",
+ "bstr",
+ "fnv",
+ "log",
+ "regex",
+]
+
 [[package]]
 name = "h2"
 version = "0.3.18"
@@ -1566,9 +1607,9 @@ dependencies = [
 
 [[package]]
 name = "hermit-abi"
-version = "0.3.1"
+version = "0.3.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fed44880c466736ef9a5c5b5facefb5ed0785676d0c02d612db14e54f0d84286"
+checksum = "379dada1584ad501b383485dd706b8afb7a70fcbc7f4da7d780638a5a6124a60"
 
 [[package]]
 name = "hex"
@@ -1818,13 +1859,13 @@ checksum = "47be2f14c678be2fdcab04ab1171db51b2762ce6f0a8ee87c8dd4a04ed216135"
 
 [[package]]
 name = "is-terminal"
-version = "0.4.9"
+version = "0.4.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cb0889898416213fab133e1d33a0e5858a48177452750691bde3666d0fdbaf8b"
+checksum = "f23ff5ef2b80d608d61efee834934d862cd92461afc0560dedf493e4c033738b"
 dependencies = [
- "hermit-abi 0.3.1",
+ "hermit-abi 0.3.8",
- "rustix",
+ "libc",
- "windows-sys 0.48.0",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
@@ -1893,6 +1934,115 @@ dependencies = [
  "syn 1.0.109",
 ]
 
+[[package]]
+name = "jsonrpsee"
+version = "0.16.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7d291e3a5818a2384645fd9756362e6d89cf0541b0b916fa7702ea4a9833608e"
+dependencies = [
+ "jsonrpsee-core",
+ "jsonrpsee-server",
+ "jsonrpsee-types",
+ "jsonrpsee-ws-client",
+]
+
+[[package]]
+name = "jsonrpsee-client-transport"
+version = "0.16.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "965de52763f2004bc91ac5bcec504192440f0b568a5d621c59d9dbd6f886c3fb"
+dependencies = [
+ "futures-util",
+ "http 0.2.11",
+ "jsonrpsee-core",
+ "jsonrpsee-types",
+ "pin-project 1.0.5",
+ "rustls-native-certs 0.6.3",
+ "soketto",
+ "thiserror",
+ "tokio",
+ "tokio-rustls 0.23.1",
+ "tokio-util",
+ "tracing",
+ "webpki-roots 0.22.2",
+]
+
+[[package]]
+name = "jsonrpsee-core"
+version = "0.16.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4e70b4439a751a5de7dd5ed55eacff78ebf4ffe0fc009cb1ebb11417f5b536b"
+dependencies = [
+ "anyhow",
+ "arrayvec",
+ "async-lock",
+ "async-trait",
+ "beef",
+ "futures-channel",
+ "futures-timer",
+ "futures-util",
+ "globset",
+ "hyper 0.14.28",
+ "jsonrpsee-types",
+ "parking_lot 0.12.0",
+ "rand 0.8.3",
+ "rustc-hash",
+ "serde",
+ "serde_json",
+ "soketto",
+ "thiserror",
+ "tokio",
+ "tracing",
+]
+
+[[package]]
+name = "jsonrpsee-server"
+version = "0.16.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fb69dad85df79527c019659a992498d03f8495390496da2f07e6c24c2b356fc"
+dependencies = [
+ "futures-channel",
+ "futures-util",
+ "http 0.2.11",
+ "hyper 0.14.28",
+ "jsonrpsee-core",
+ "jsonrpsee-types",
+ "serde",
+ "serde_json",
+ "soketto",
+ "tokio",
+ "tokio-stream",
+ "tokio-util",
+ "tower",
+ "tracing",
+]
+
+[[package]]
+name = "jsonrpsee-types"
+version = "0.16.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5bd522fe1ce3702fd94812965d7bb7a3364b1c9aba743944c5a00529aae80f8c"
+dependencies = [
+ "anyhow",
+ "beef",
+ "serde",
+ "serde_json",
+ "thiserror",
+ "tracing",
+]
+
+[[package]]
+name = "jsonrpsee-ws-client"
+version = "0.16.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b83daeecfc6517cfe210df24e570fb06213533dfb990318fae781f4c7119dd9"
+dependencies = [
+ "http 0.2.11",
+ "jsonrpsee-client-transport",
+ "jsonrpsee-core",
+ "jsonrpsee-types",
+]
+
 [[package]]
 name = "keccak"
 version = "0.1.0"
@@ -3470,6 +3620,12 @@ version = "0.1.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d626bb9dae77e28219937af045c257c28bfd3f69333c512553507f5f9798cb76"
 
+[[package]]
+name = "rustc-hash"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
+
 [[package]]
 name = "rustc-hex"
 version = "2.1.0"
@@ -3553,6 +3709,18 @@ dependencies = [
  "security-framework",
 ]
 
+[[package]]
+name = "rustls-native-certs"
+version = "0.6.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a9aace74cb666635c918e9c12bc0d348266037aa8eb599b5cba565709a8dff00"
+dependencies = [
+ "openssl-probe",
+ "rustls-pemfile",
+ "schannel",
+ "security-framework",
+]
+
 [[package]]
 name = "rustls-pemfile"
 version = "1.0.0"
@@ -3723,6 +3891,21 @@ dependencies = [
  "pest",
 ]
 
+[[package]]
+name = "sequential-macro"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eb5facc5f409a55d25bf271c853402a00e1187097d326757043f5dd711944d07"
+
+[[package]]
+name = "sequential-test"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0d9c0d773bc7e7733264f460e5dfa00b2510421ddd6284db0749eef8dfb79e9"
+dependencies = [
+ "sequential-macro",
+]
+
 [[package]]
 name = "serde"
 version = "1.0.202"
@@ -3936,9 +4119,9 @@ checksum = "0f0242b8e50dd9accdd56170e94ca1ebd223b098eb9c83539a6e367d0f36ae68"
 
 [[package]]
 name = "similar"
-version = "2.2.1"
+version = "2.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "420acb44afdae038210c99e69aae24109f32f15500aa708e81d46c9f29d55fcf"
+checksum = "2aeaf503862c419d66959f5d7ca015337d864e9c49485d771b732e2a20453597"
 
 [[package]]
 name = "slab"
@@ -4019,14 +4202,15 @@ dependencies = [
 
 [[package]]
 name = "soketto"
-version = "0.7.0"
+version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "083624472e8817d44d02c0e55df043737ff11f279af924abdf93845717c2b75c"
+checksum = "41d1c5305e39e09653383c2c7244f2f78b3bcae37cf50c64cb4789c9f5096ec2"
 dependencies = [
  "base64 0.13.1",
  "bytes",
  "flate2",
  "futures",
+ "http 0.2.11",
  "httparse",
  "log",
  "rand 0.8.3",
@@ -4280,6 +4464,8 @@ dependencies = [
  "hex",
  "hyper 1.3.1",
  "itertools 0.13.0",
+ "jsonrpsee",
+ "jsonrpsee-core",
  "libp2p",
  "mockito",
  "monero",
@@ -4294,6 +4480,7 @@ dependencies = [
  "reqwest",
  "rust_decimal",
  "rust_decimal_macros",
+ "sequential-test",
  "serde",
  "serde_cbor",
  "serde_json",
@@ -4657,6 +4844,7 @@ checksum = "9cf6b47b3771c49ac75ad09a6162f53ad4b8088b76ac60e8ec1455b31a189fe1"
 dependencies = [
  "bytes",
  "futures-core",
+ "futures-io",
  "futures-sink",
  "pin-project-lite 0.2.13",
  "tokio",
@@ -4723,6 +4911,23 @@ dependencies = [
  "tokio",
 ]
 
+[[package]]
+name = "tower"
+version = "0.4.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8fa9be0de6cf49e536ce1851f987bd21a43b771b09473c3549a6c853db37c1c"
+dependencies = [
+ "tower-layer",
+ "tower-service",
+ "tracing",
+]
+
+[[package]]
+name = "tower-layer"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c20c8dbed6283a09604c3e69b4b7eeb54e298b8a600d4d5ecb5ad39de609f1d0"
+
 [[package]]
 name = "tower-service"
 version = "0.3.1"
@@ -4735,6 +4940,7 @@ version = "0.1.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c3523ab5a71916ccf420eebdf5521fcef02141234bbc0b8a49f2fdc4544364ef"
 dependencies = [
+ "log",
  "pin-project-lite 0.2.13",
  "tracing-attributes",
  "tracing-core",
@@ -4921,7 +5127,7 @@ dependencies = [
  "log",
  "rand 0.8.3",
  "rustls 0.19.0",
- "rustls-native-certs",
+ "rustls-native-certs 0.5.0",
  "sha-1",
  "thiserror",
  "url",

swap/Cargo.toml

@@ -32,6 +32,8 @@ ed25519-dalek = "1"
 futures = { version = "0.3", default-features = false }
 hex = "0.4"
 itertools = "0.13"
+jsonrpsee = { version = "0.16.2", features = [ "server" ] }
+jsonrpsee-core = "0.16.2"
 libp2p = { version = "0.42.2", default-features = false, features = [ "tcp-tokio", "yamux", "mplex", "dns-tokio", "noise", "request-response", "websocket", "ping", "rendezvous", "identify" ] }
 monero = { version = "0.12", features = [ "serde_support" ] }
 monero-rpc = { path = "../monero-rpc" }
@@ -49,12 +51,12 @@ serde_json = "1"
 serde_with = { version = "1", features = [ "macros" ] }
 sha2 = "0.10"
 sigma_fun = { git = "https://github.com/LLFourn/secp256kfun", default-features = false, features = [ "ed25519", "serde", "secp256k1", "alloc" ] }
-sqlx = { version = "0.6", features = [ "sqlite", "runtime-tokio-rustls", "offline" ] }
+sqlx = { version = "0.6.3", features = [ "sqlite", "runtime-tokio-rustls", "offline" ] }
 structopt = "0.3"
 strum = { version = "0.26", features = [ "derive" ] }
 thiserror = "1"
 time = "0.3"
-tokio = { version = "1", features = [ "rt-multi-thread", "time", "macros", "sync", "process", "fs", "net" ] }
+tokio = { version = "1", features = [ "rt-multi-thread", "time", "macros", "sync", "process", "fs", "net", "parking_lot" ] }
 tokio-socks = "0.5"
 tokio-tungstenite = { version = "0.15", features = [ "rustls-tls" ] }
 tokio-util = { version = "0.7", features = [ "io", "codec" ] }
@@ -78,10 +80,12 @@ zip = "0.5"
 bitcoin-harness = "0.2.2"
 get-port = "3"
 hyper = "1.3"
+jsonrpsee = { version = "0.16.2", features = [ "ws-client" ] }
 mockito = "1.3.0"
 monero-harness = { path = "../monero-harness" }
 port_check = "0.2"
 proptest = "1"
+sequential-test = "0.2.4"
 serde_cbor = "0.11"
 serial_test = "3.0"
 spectral = "0.6"

swap/sqlite_dev_setup.sh

@@ -1,7 +1,8 @@
 #!/bin/bash
 
 # run this script from the swap dir
-# make sure you have sqlx-cli installed: cargo install sqlx-cli
+# make sure you have sqlx-cli installed: cargo install --version 0.6.3 sqlx-cli
+# it's advised for the sqlx-cli to be the same version as specified in cargo.toml
 
 # this script creates a temporary sqlite database
 # then runs the migration scripts to create the tables (migrations folder)

swap/sqlx-data.json

@@ -28,6 +28,24 @@
     },
     "query": "\n        insert into peer_addresses (\n            peer_id,\n            address\n            ) values (?, ?);\n        "
   },
+  "0d465a17ebbb5761421def759c73cad023c30705d5b41a1399ef79d8d2571d7c": {
+    "describe": {
+      "columns": [
+        {
+          "name": "start_date",
+          "ordinal": 0,
+          "type_info": "Text"
+        }
+      ],
+      "nullable": [
+        true
+      ],
+      "parameters": {
+        "Right": 1
+      }
+    },
+    "query": "\n                SELECT min(entered_at) as start_date\n                FROM swap_states\n                WHERE swap_id = ?\n                "
+  },
   "1ec38c85e7679b2eb42b3df75d9098772ce44fdb8db3012d3c2410d828b74157": {
     "describe": {
       "columns": [
@@ -62,6 +80,30 @@
     },
     "query": "\n        insert into peers (\n            swap_id,\n            peer_id\n            ) values (?, ?);\n        "
   },
+  "3f2bfdd2d134586ccad22171cd85a465800fc5c4fdaf191d206974e530240c87": {
+    "describe": {
+      "columns": [
+        {
+          "name": "swap_id",
+          "ordinal": 0,
+          "type_info": "Text"
+        },
+        {
+          "name": "state",
+          "ordinal": 1,
+          "type_info": "Text"
+        }
+      ],
+      "nullable": [
+        false,
+        false
+      ],
+      "parameters": {
+        "Right": 0
+      }
+    },
+    "query": "\n                SELECT swap_id, state\n                FROM swap_states\n                "
+  },
   "50a5764546f69c118fa0b64120da50f51073d36257d49768de99ff863e3511e0": {
     "describe": {
       "columns": [],
@@ -90,24 +132,6 @@
     },
     "query": "\n           SELECT state\n           FROM swap_states\n           WHERE swap_id = ?\n           ORDER BY id desc\n           LIMIT 1;\n\n        "
   },
-  "a0eb85d04ee3842c52291dad4d225941d1141af735922fcbc665868997fce304": {
-    "describe": {
-      "columns": [
-        {
-          "name": "address",
-          "ordinal": 0,
-          "type_info": "Text"
-        }
-      ],
-      "nullable": [
-        false
-      ],
-      "parameters": {
-        "Right": 1
-      }
-    },
-    "query": "\n        SELECT address\n        FROM peer_addresses\n        WHERE peer_id = ?\n        "
-  },
   "b703032b4ddc627a1124817477e7a8e5014bdc694c36a14053ef3bb2fc0c69b0": {
     "describe": {
       "columns": [],
@@ -135,5 +159,41 @@
       }
     },
     "query": "\n        SELECT address\n        FROM monero_addresses\n        WHERE swap_id = ?\n        "
+  },
+  "d78acba5eb8563826dd190e0886aa665aae3c6f1e312ee444e65df1c95afe8b2": {
+    "describe": {
+      "columns": [
+        {
+          "name": "address",
+          "ordinal": 0,
+          "type_info": "Text"
+        }
+      ],
+      "nullable": [
+        false
+      ],
+      "parameters": {
+        "Right": 1
+      }
+    },
+    "query": "\n        SELECT DISTINCT address\n        FROM peer_addresses\n        WHERE peer_id = ?\n        "
+  },
+  "e05620f420f8c1022971eeb66a803323a8cf258cbebb2834e3f7cf8f812fa646": {
+    "describe": {
+      "columns": [
+        {
+          "name": "state",
+          "ordinal": 0,
+          "type_info": "Text"
+        }
+      ],
+      "nullable": [
+        false
+      ],
+      "parameters": {
+        "Right": 1
+      }
+    },
+    "query": "\n           SELECT state\n           FROM swap_states\n           WHERE swap_id = ?\n        "
   }
 }

swap/src/api.rs

@@ -0,0 +1,460 @@
+pub mod request;
+use crate::cli::command::{Bitcoin, Monero, Tor};
+use crate::database::open_db;
+use crate::env::{Config as EnvConfig, GetConfig, Mainnet, Testnet};
+use crate::fs::system_data_dir;
+use crate::network::rendezvous::XmrBtcNamespace;
+use crate::protocol::Database;
+use crate::seed::Seed;
+use crate::{bitcoin, cli, monero};
+use anyhow::{bail, Context as AnyContext, Error, Result};
+use futures::future::try_join_all;
+use std::fmt;
+use std::future::Future;
+use std::net::SocketAddr;
+use std::path::PathBuf;
+use std::sync::{Arc, Once};
+use tokio::sync::{broadcast, broadcast::Sender, Mutex, RwLock};
+use tokio::task::JoinHandle;
+use url::Url;
+
+static START: Once = Once::new();
+
+#[derive(Clone, PartialEq, Debug)]
+pub struct Config {
+    tor_socks5_port: u16,
+    namespace: XmrBtcNamespace,
+    server_address: Option<SocketAddr>,
+    pub env_config: EnvConfig,
+    seed: Option<Seed>,
+    debug: bool,
+    json: bool,
+    data_dir: PathBuf,
+    is_testnet: bool,
+}
+
+use uuid::Uuid;
+
+#[derive(Default)]
+pub struct PendingTaskList(Mutex<Vec<JoinHandle<()>>>);
+
+impl PendingTaskList {
+    pub async fn spawn<F, T>(&self, future: F)
+    where
+        F: Future<Output = T> + Send + 'static,
+        T: Send + 'static,
+    {
+        let handle = tokio::spawn(async move {
+            let _ = future.await;
+        });
+
+        self.0.lock().await.push(handle);
+    }
+
+    pub async fn wait_for_tasks(&self) -> Result<()> {
+        let tasks = {
+            // Scope for the lock, to avoid holding it for the entire duration of the async block
+            let mut guard = self.0.lock().await;
+            guard.drain(..).collect::<Vec<_>>()
+        };
+
+        try_join_all(tasks).await?;
+
+        Ok(())
+    }
+}
+
+pub struct SwapLock {
+    current_swap: RwLock<Option<Uuid>>,
+    suspension_trigger: Sender<()>,
+}
+
+impl SwapLock {
+    pub fn new() -> Self {
+        let (suspension_trigger, _) = broadcast::channel(10);
+        SwapLock {
+            current_swap: RwLock::new(None),
+            suspension_trigger,
+        }
+    }
+
+    pub async fn listen_for_swap_force_suspension(&self) -> Result<(), Error> {
+        let mut listener = self.suspension_trigger.subscribe();
+        let event = listener.recv().await;
+        match event {
+            Ok(_) => Ok(()),
+            Err(e) => {
+                tracing::error!("Error receiving swap suspension signal: {}", e);
+                bail!(e)
+            }
+        }
+    }
+
+    pub async fn acquire_swap_lock(&self, swap_id: Uuid) -> Result<(), Error> {
+        let mut current_swap = self.current_swap.write().await;
+        if current_swap.is_some() {
+            bail!("There already exists an active swap lock");
+        }
+
+        tracing::debug!(swap_id = %swap_id, "Acquiring swap lock");
+        *current_swap = Some(swap_id);
+        Ok(())
+    }
+
+    pub async fn get_current_swap_id(&self) -> Option<Uuid> {
+        *self.current_swap.read().await
+    }
+
+    /// Sends a signal to suspend all ongoing swap processes.
+    ///
+    /// This function performs the following steps:
+    /// 1. Triggers the suspension by sending a unit `()` signal to all listeners via `self.suspension_trigger`.
+    /// 2. Polls the `current_swap` state every 50 milliseconds to check if it has been set to `None`, indicating that the swap processes have been suspended and the lock released.
+    /// 3. If the lock is not released within 10 seconds, the function returns an error.
+    ///
+    /// If we send a suspend signal while no swap is in progress, the function will not fail, but will return immediately.
+    ///
+    /// # Returns
+    /// - `Ok(())` if the swap lock is successfully released.
+    /// - `Err(Error)` if the function times out waiting for the swap lock to be released.
+    ///
+    /// # Notes
+    /// The 50ms polling interval is considered negligible overhead compared to the typical time required to suspend ongoing swap processes.
+    pub async fn send_suspend_signal(&self) -> Result<(), Error> {
+        const TIMEOUT: u64 = 10_000;
+        const INTERVAL: u64 = 50;
+
+        let _ = self.suspension_trigger.send(())?;
+
+        for _ in 0..(TIMEOUT / INTERVAL) {
+            if self.get_current_swap_id().await.is_none() {
+                return Ok(());
+            }
+            tokio::time::sleep(tokio::time::Duration::from_millis(INTERVAL)).await;
+        }
+
+        bail!("Timed out waiting for swap lock to be released");
+    }
+
+    pub async fn release_swap_lock(&self) -> Result<Uuid, Error> {
+        let mut current_swap = self.current_swap.write().await;
+        if let Some(swap_id) = current_swap.as_ref() {
+            tracing::debug!(swap_id = %swap_id, "Releasing swap lock");
+
+            let prev_swap_id = *swap_id;
+            *current_swap = None;
+            drop(current_swap);
+            Ok(prev_swap_id)
+        } else {
+            bail!("There is no current swap lock to release");
+        }
+    }
+}
+
+impl Default for SwapLock {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+// workaround for warning over monero_rpc_process which we must own but not read
+#[allow(dead_code)]
+pub struct Context {
+    pub db: Arc<dyn Database + Send + Sync>,
+    bitcoin_wallet: Option<Arc<bitcoin::Wallet>>,
+    monero_wallet: Option<Arc<monero::Wallet>>,
+    monero_rpc_process: Option<monero::WalletRpcProcess>,
+    pub swap_lock: Arc<SwapLock>,
+    pub config: Config,
+    pub tasks: Arc<PendingTaskList>,
+}
+
+#[allow(clippy::too_many_arguments)]
+impl Context {
+    pub async fn build(
+        bitcoin: Option<Bitcoin>,
+        monero: Option<Monero>,
+        tor: Option<Tor>,
+        data: Option<PathBuf>,
+        is_testnet: bool,
+        debug: bool,
+        json: bool,
+        server_address: Option<SocketAddr>,
+    ) -> Result<Context> {
+        let data_dir = data::data_dir_from(data, is_testnet)?;
+        let env_config = env_config_from(is_testnet);
+
+        let seed = Seed::from_file_or_generate(data_dir.as_path())
+            .context("Failed to read seed in file")?;
+
+        let bitcoin_wallet = {
+            if let Some(bitcoin) = bitcoin {
+                let (bitcoin_electrum_rpc_url, bitcoin_target_block) =
+                    bitcoin.apply_defaults(is_testnet)?;
+                Some(Arc::new(
+                    init_bitcoin_wallet(
+                        bitcoin_electrum_rpc_url,
+                        &seed,
+                        data_dir.clone(),
+                        env_config,
+                        bitcoin_target_block,
+                    )
+                    .await?,
+                ))
+            } else {
+                None
+            }
+        };
+
+        let (monero_wallet, monero_rpc_process) = {
+            if let Some(monero) = monero {
+                let monero_daemon_address = monero.apply_defaults(is_testnet);
+                let (wlt, prc) =
+                    init_monero_wallet(data_dir.clone(), monero_daemon_address, env_config).await?;
+                (Some(Arc::new(wlt)), Some(prc))
+            } else {
+                (None, None)
+            }
+        };
+
+        let tor_socks5_port = tor.map_or(9050, |tor| tor.tor_socks5_port);
+
+        START.call_once(|| {
+            let _ = cli::tracing::init(debug, json, data_dir.join("logs"));
+        });
+
+        let context = Context {
+            db: open_db(data_dir.join("sqlite")).await?,
+            bitcoin_wallet,
+            monero_wallet,
+            monero_rpc_process,
+            config: Config {
+                tor_socks5_port,
+                namespace: XmrBtcNamespace::from_is_testnet(is_testnet),
+                env_config,
+                seed: Some(seed),
+                server_address,
+                debug,
+                json,
+                is_testnet,
+                data_dir,
+            },
+            swap_lock: Arc::new(SwapLock::new()),
+            tasks: Arc::new(PendingTaskList::default()),
+        };
+
+        Ok(context)
+    }
+
+    pub async fn for_harness(
+        seed: Seed,
+        env_config: EnvConfig,
+        db_path: PathBuf,
+        bob_bitcoin_wallet: Arc<bitcoin::Wallet>,
+        bob_monero_wallet: Arc<monero::Wallet>,
+    ) -> Self {
+        let config = Config::for_harness(seed, env_config);
+
+        Self {
+            bitcoin_wallet: Some(bob_bitcoin_wallet),
+            monero_wallet: Some(bob_monero_wallet),
+            config,
+            db: open_db(db_path)
+                .await
+                .expect("Could not open sqlite database"),
+            monero_rpc_process: None,
+            swap_lock: Arc::new(SwapLock::new()),
+            tasks: Arc::new(PendingTaskList::default()),
+        }
+    }
+}
+
+impl fmt::Debug for Context {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "")
+    }
+}
+
+async fn init_bitcoin_wallet(
+    electrum_rpc_url: Url,
+    seed: &Seed,
+    data_dir: PathBuf,
+    env_config: EnvConfig,
+    bitcoin_target_block: usize,
+) -> Result<bitcoin::Wallet> {
+    let wallet_dir = data_dir.join("wallet");
+
+    let wallet = bitcoin::Wallet::new(
+        electrum_rpc_url.clone(),
+        &wallet_dir,
+        seed.derive_extended_private_key(env_config.bitcoin_network)?,
+        env_config,
+        bitcoin_target_block,
+    )
+    .await
+    .context("Failed to initialize Bitcoin wallet")?;
+
+    wallet.sync().await?;
+
+    Ok(wallet)
+}
+
+async fn init_monero_wallet(
+    data_dir: PathBuf,
+    monero_daemon_address: String,
+    env_config: EnvConfig,
+) -> Result<(monero::Wallet, monero::WalletRpcProcess)> {
+    let network = env_config.monero_network;
+
+    const MONERO_BLOCKCHAIN_MONITORING_WALLET_NAME: &str = "swap-tool-blockchain-monitoring-wallet";
+
+    let monero_wallet_rpc = monero::WalletRpc::new(data_dir.join("monero")).await?;
+
+    let monero_wallet_rpc_process = monero_wallet_rpc
+        .run(network, Some(monero_daemon_address))
+        .await?;
+
+    let monero_wallet = monero::Wallet::open_or_create(
+        monero_wallet_rpc_process.endpoint(),
+        MONERO_BLOCKCHAIN_MONITORING_WALLET_NAME.to_string(),
+        env_config,
+    )
+    .await?;
+
+    Ok((monero_wallet, monero_wallet_rpc_process))
+}
+
+mod data {
+    use super::*;
+
+    pub fn data_dir_from(arg_dir: Option<PathBuf>, testnet: bool) -> Result<PathBuf> {
+        let base_dir = match arg_dir {
+            Some(custom_base_dir) => custom_base_dir,
+            None => os_default()?,
+        };
+
+        let sub_directory = if testnet { "testnet" } else { "mainnet" };
+
+        Ok(base_dir.join(sub_directory))
+    }
+
+    fn os_default() -> Result<PathBuf> {
+        Ok(system_data_dir()?.join("cli"))
+    }
+}
+
+fn env_config_from(testnet: bool) -> EnvConfig {
+    if testnet {
+        Testnet::get_config()
+    } else {
+        Mainnet::get_config()
+    }
+}
+
+impl Config {
+    pub fn for_harness(seed: Seed, env_config: EnvConfig) -> Self {
+        let data_dir = data::data_dir_from(None, false).expect("Could not find data directory");
+
+        Self {
+            tor_socks5_port: 9050,
+            namespace: XmrBtcNamespace::from_is_testnet(false),
+            server_address: None,
+            env_config,
+            seed: Some(seed),
+            debug: false,
+            json: false,
+            is_testnet: false,
+            data_dir,
+        }
+    }
+}
+
+#[cfg(test)]
+pub mod api_test {
+    use super::*;
+    use crate::api::request::{Method, Request};
+
+    use libp2p::Multiaddr;
+    use std::str::FromStr;
+    use uuid::Uuid;
+
+    pub const MULTI_ADDRESS: &str =
+        "/ip4/127.0.0.1/tcp/9939/p2p/12D3KooWCdMKjesXMJz1SiZ7HgotrxuqhQJbP5sgBm2BwP1cqThi";
+    pub const MONERO_STAGENET_ADDRESS: &str = "53gEuGZUhP9JMEBZoGaFNzhwEgiG7hwQdMCqFxiyiTeFPmkbt1mAoNybEUvYBKHcnrSgxnVWgZsTvRBaHBNXPa8tHiCU51a";
+    pub const BITCOIN_TESTNET_ADDRESS: &str = "tb1qr3em6k3gfnyl8r7q0v7t4tlnyxzgxma3lressv";
+    pub const MONERO_MAINNET_ADDRESS: &str = "44Ato7HveWidJYUAVw5QffEcEtSH1DwzSP3FPPkHxNAS4LX9CqgucphTisH978FLHE34YNEx7FcbBfQLQUU8m3NUC4VqsRa";
+    pub const BITCOIN_MAINNET_ADDRESS: &str = "bc1qe4epnfklcaa0mun26yz5g8k24em5u9f92hy325";
+    pub const SWAP_ID: &str = "ea030832-3be9-454f-bb98-5ea9a788406b";
+
+    impl Config {
+        pub fn default(
+            is_testnet: bool,
+            data_dir: Option<PathBuf>,
+            debug: bool,
+            json: bool,
+        ) -> Self {
+            let data_dir = data::data_dir_from(data_dir, is_testnet).unwrap();
+
+            let seed = Seed::from_file_or_generate(data_dir.as_path()).unwrap();
+
+            let env_config = env_config_from(is_testnet);
+            Self {
+                tor_socks5_port: 9050,
+                namespace: XmrBtcNamespace::from_is_testnet(is_testnet),
+                server_address: None,
+                env_config,
+                seed: Some(seed),
+                debug,
+                json,
+                is_testnet,
+                data_dir,
+            }
+        }
+    }
+
+    impl Request {
+        pub fn buy_xmr(is_testnet: bool) -> Request {
+            let seller = Multiaddr::from_str(MULTI_ADDRESS).unwrap();
+            let bitcoin_change_address = {
+                if is_testnet {
+                    bitcoin::Address::from_str(BITCOIN_TESTNET_ADDRESS).unwrap()
+                } else {
+                    bitcoin::Address::from_str(BITCOIN_MAINNET_ADDRESS).unwrap()
+                }
+            };
+
+            let monero_receive_address = {
+                if is_testnet {
+                    monero::Address::from_str(MONERO_STAGENET_ADDRESS).unwrap()
+                } else {
+                    monero::Address::from_str(MONERO_MAINNET_ADDRESS).unwrap()
+                }
+            };
+
+            Request::new(Method::BuyXmr {
+                seller,
+                bitcoin_change_address,
+                monero_receive_address,
+                swap_id: Uuid::new_v4(),
+            })
+        }
+
+        pub fn resume() -> Request {
+            Request::new(Method::Resume {
+                swap_id: Uuid::from_str(SWAP_ID).unwrap(),
+            })
+        }
+
+        pub fn cancel() -> Request {
+            Request::new(Method::CancelAndRefund {
+                swap_id: Uuid::from_str(SWAP_ID).unwrap(),
+            })
+        }
+
+        pub fn refund() -> Request {
+            Request::new(Method::CancelAndRefund {
+                swap_id: Uuid::from_str(SWAP_ID).unwrap(),
+            })
+        }
+    }
+}

swap/src/api/request.rs

@@ -0,0 +1,930 @@
+use crate::api::Context;
+use crate::bitcoin::{Amount, ExpiredTimelocks, TxLock};
+use crate::cli::{list_sellers, EventLoop, SellerStatus};
+use crate::libp2p_ext::MultiAddrExt;
+use crate::network::quote::{BidQuote, ZeroQuoteReceived};
+use crate::network::swarm;
+use crate::protocol::bob::{BobState, Swap};
+use crate::protocol::{bob, State};
+use crate::{bitcoin, cli, monero, rpc};
+use anyhow::{bail, Context as AnyContext, Result};
+use libp2p::core::Multiaddr;
+use qrcode::render::unicode;
+use qrcode::QrCode;
+use serde_json::json;
+use std::cmp::min;
+use std::convert::TryInto;
+use std::future::Future;
+use std::net::SocketAddr;
+use std::sync::Arc;
+use std::time::Duration;
+use tracing::{debug_span, field, Instrument, Span};
+use uuid::Uuid;
+
+#[derive(PartialEq, Debug)]
+pub struct Request {
+    pub cmd: Method,
+    pub log_reference: Option<String>,
+}
+
+#[derive(Debug, PartialEq)]
+pub enum Method {
+    BuyXmr {
+        seller: Multiaddr,
+        bitcoin_change_address: bitcoin::Address,
+        monero_receive_address: monero::Address,
+        swap_id: Uuid,
+    },
+    Resume {
+        swap_id: Uuid,
+    },
+    CancelAndRefund {
+        swap_id: Uuid,
+    },
+    MoneroRecovery {
+        swap_id: Uuid,
+    },
+    History,
+    Config,
+    WithdrawBtc {
+        amount: Option<Amount>,
+        address: bitcoin::Address,
+    },
+    Balance {
+        force_refresh: bool,
+    },
+    ListSellers {
+        rendezvous_point: Multiaddr,
+    },
+    ExportBitcoinWallet,
+    SuspendCurrentSwap,
+    StartDaemon {
+        server_address: Option<SocketAddr>,
+    },
+    GetCurrentSwap,
+    GetSwapInfo {
+        swap_id: Uuid,
+    },
+    GetRawStates,
+}
+
+impl Method {
+    fn get_tracing_span(&self, log_reference_id: Option<String>) -> Span {
+        let span = match self {
+            Method::Balance { .. } => {
+                debug_span!(
+                    "method",
+                    method_name = "Balance",
+                    log_reference_id = field::Empty
+                )
+            }
+            Method::BuyXmr { swap_id, .. } => {
+                debug_span!("method", method_name="BuyXmr", swap_id=%swap_id, log_reference_id=field::Empty)
+            }
+            Method::CancelAndRefund { swap_id } => {
+                debug_span!("method", method_name="CancelAndRefund", swap_id=%swap_id, log_reference_id=field::Empty)
+            }
+            Method::Resume { swap_id } => {
+                debug_span!("method", method_name="Resume", swap_id=%swap_id, log_reference_id=field::Empty)
+            }
+            Method::Config => {
+                debug_span!(
+                    "method",
+                    method_name = "Config",
+                    log_reference_id = field::Empty
+                )
+            }
+            Method::ExportBitcoinWallet => {
+                debug_span!(
+                    "method",
+                    method_name = "ExportBitcoinWallet",
+                    log_reference_id = field::Empty
+                )
+            }
+            Method::GetCurrentSwap => {
+                debug_span!(
+                    "method",
+                    method_name = "GetCurrentSwap",
+                    log_reference_id = field::Empty
+                )
+            }
+            Method::GetSwapInfo { .. } => {
+                debug_span!(
+                    "method",
+                    method_name = "GetSwapInfo",
+                    log_reference_id = field::Empty
+                )
+            }
+            Method::History => {
+                debug_span!(
+                    "method",
+                    method_name = "History",
+                    log_reference_id = field::Empty
+                )
+            }
+            Method::ListSellers { .. } => {
+                debug_span!(
+                    "method",
+                    method_name = "ListSellers",
+                    log_reference_id = field::Empty
+                )
+            }
+            Method::MoneroRecovery { .. } => {
+                debug_span!(
+                    "method",
+                    method_name = "MoneroRecovery",
+                    log_reference_id = field::Empty
+                )
+            }
+            Method::GetRawStates => debug_span!(
+                "method",
+                method_name = "RawHistory",
+                log_reference_id = field::Empty
+            ),
+            Method::StartDaemon { .. } => {
+                debug_span!(
+                    "method",
+                    method_name = "StartDaemon",
+                    log_reference_id = field::Empty
+                )
+            }
+            Method::SuspendCurrentSwap => {
+                debug_span!(
+                    "method",
+                    method_name = "SuspendCurrentSwap",
+                    log_reference_id = field::Empty
+                )
+            }
+            Method::WithdrawBtc { .. } => {
+                debug_span!(
+                    "method",
+                    method_name = "WithdrawBtc",
+                    log_reference_id = field::Empty
+                )
+            }
+        };
+        if let Some(log_reference_id) = log_reference_id {
+            span.record("log_reference_id", log_reference_id.as_str());
+        }
+        span
+    }
+}
+
+impl Request {
+    pub fn new(cmd: Method) -> Request {
+        Request {
+            cmd,
+            log_reference: None,
+        }
+    }
+
+    pub fn with_id(cmd: Method, id: Option<String>) -> Request {
+        Request {
+            cmd,
+            log_reference: id,
+        }
+    }
+
+    async fn handle_cmd(self, context: Arc<Context>) -> Result<serde_json::Value> {
+        match self.cmd {
+            Method::SuspendCurrentSwap => {
+                let swap_id = context.swap_lock.get_current_swap_id().await;
+
+                if let Some(id_value) = swap_id {
+                    context.swap_lock.send_suspend_signal().await?;
+
+                    Ok(json!({ "swapId": id_value }))
+                } else {
+                    bail!("No swap is currently running")
+                }
+            }
+            Method::GetSwapInfo { swap_id } => {
+                let bitcoin_wallet = context
+                    .bitcoin_wallet
+                    .as_ref()
+                    .context("Could not get Bitcoin wallet")?;
+
+                let state = context.db.get_state(swap_id).await?;
+                let is_completed = state.swap_finished();
+
+                let peerId = context
+                    .db
+                    .get_peer_id(swap_id)
+                    .await
+                    .with_context(|| "Could not get PeerID")?;
+
+                let addresses = context
+                    .db
+                    .get_addresses(peerId)
+                    .await
+                    .with_context(|| "Could not get addressess")?;
+
+                let start_date = context.db.get_swap_start_date(swap_id).await?;
+
+                let swap_state: BobState = state.try_into()?;
+                let state_name = format!("{}", swap_state);
+
+                let (
+                    xmr_amount,
+                    btc_amount,
+                    tx_lock_id,
+                    tx_cancel_fee,
+                    tx_refund_fee,
+                    tx_lock_fee,
+                    btc_refund_address,
+                    cancel_timelock,
+                    punish_timelock,
+                ) = context
+                    .db
+                    .get_states(swap_id)
+                    .await?
+                    .iter()
+                    .find_map(|state| {
+                        if let State::Bob(BobState::SwapSetupCompleted(state2)) = state {
+                            let xmr_amount = state2.xmr;
+                            let btc_amount = state2.tx_lock.lock_amount().to_sat();
+                            let tx_cancel_fee = state2.tx_cancel_fee.to_sat();
+                            let tx_refund_fee = state2.tx_refund_fee.to_sat();
+                            let tx_lock_id = state2.tx_lock.txid();
+                            let btc_refund_address = state2.refund_address.to_string();
+
+                            if let Ok(tx_lock_fee) = state2.tx_lock.fee() {
+                                let tx_lock_fee = tx_lock_fee.to_sat();
+
+                                Some((
+                                    xmr_amount,
+                                    btc_amount,
+                                    tx_lock_id,
+                                    tx_cancel_fee,
+                                    tx_refund_fee,
+                                    tx_lock_fee,
+                                    btc_refund_address,
+                                    state2.cancel_timelock,
+                                    state2.punish_timelock,
+                                ))
+                            } else {
+                                None
+                            }
+                        } else {
+                            None
+                        }
+                    })
+                    .with_context(|| "Did not find SwapSetupCompleted state for swap")?;
+
+                let timelock = match swap_state {
+                    BobState::Started { .. }
+                    | BobState::SafelyAborted
+                    | BobState::SwapSetupCompleted(_) => None,
+                    BobState::BtcLocked { state3: state, .. }
+                    | BobState::XmrLockProofReceived { state, .. } => {
+                        Some(state.expired_timelock(bitcoin_wallet).await)
+                    }
+                    BobState::XmrLocked(state) | BobState::EncSigSent(state) => {
+                        Some(state.expired_timelock(bitcoin_wallet).await)
+                    }
+                    BobState::CancelTimelockExpired(state) | BobState::BtcCancelled(state) => {
+                        Some(state.expired_timelock(bitcoin_wallet).await)
+                    }
+                    BobState::BtcPunished { .. } => Some(Ok(ExpiredTimelocks::Punish)),
+                    BobState::BtcRefunded(_)
+                    | BobState::BtcRedeemed(_)
+                    | BobState::XmrRedeemed { .. } => None,
+                };
+
+                Ok(json!({
+                    "swapId": swap_id,
+                    "seller": {
+                        "peerId": peerId.to_string(),
+                        "addresses": addresses
+                    },
+                    "completed": is_completed,
+                    "startDate": start_date,
+                    "stateName": state_name,
+                    "xmrAmount": xmr_amount,
+                    "btcAmount": btc_amount,
+                    "txLockId": tx_lock_id,
+                    "txCancelFee": tx_cancel_fee,
+                    "txRefundFee": tx_refund_fee,
+                    "txLockFee": tx_lock_fee,
+                    "btcRefundAddress": btc_refund_address.to_string(),
+                    "cancelTimelock": cancel_timelock,
+                    "punishTimelock": punish_timelock,
+                    // If the timelock is None, it means that the swap is in a state where the timelock is not accessible to us.
+                    // If that is the case, we return null. Otherwise, we return the timelock.
+                    "timelock": timelock.map(|tl| tl.map(|tl| json!(tl)).unwrap_or(json!(null))).unwrap_or(json!(null)),
+                }))
+            }
+            Method::BuyXmr {
+                seller,
+                bitcoin_change_address,
+                monero_receive_address,
+                swap_id,
+            } => {
+                let bitcoin_wallet = Arc::clone(
+                    context
+                        .bitcoin_wallet
+                        .as_ref()
+                        .expect("Could not find Bitcoin wallet"),
+                );
+                let monero_wallet = Arc::clone(
+                    context
+                        .monero_wallet
+                        .as_ref()
+                        .context("Could not get Monero wallet")?,
+                );
+                let env_config = context.config.env_config;
+                let seed = context.config.seed.clone().context("Could not get seed")?;
+
+                let seller_peer_id = seller
+                    .extract_peer_id()
+                    .context("Seller address must contain peer ID")?;
+                context
+                    .db
+                    .insert_address(seller_peer_id, seller.clone())
+                    .await?;
+
+                let behaviour = cli::Behaviour::new(
+                    seller_peer_id,
+                    env_config,
+                    bitcoin_wallet.clone(),
+                    (seed.derive_libp2p_identity(), context.config.namespace),
+                );
+                let mut swarm = swarm::cli(
+                    seed.derive_libp2p_identity(),
+                    context.config.tor_socks5_port,
+                    behaviour,
+                )
+                .await?;
+
+                swarm.behaviour_mut().add_address(seller_peer_id, seller);
+
+                context
+                    .db
+                    .insert_monero_address(swap_id, monero_receive_address)
+                    .await?;
+
+                tracing::debug!(peer_id = %swarm.local_peer_id(), "Network layer initialized");
+
+                context.swap_lock.acquire_swap_lock(swap_id).await?;
+
+                let initialize_swap = tokio::select! {
+                    biased;
+                    _ = context.swap_lock.listen_for_swap_force_suspension() => {
+                        tracing::debug!("Shutdown signal received, exiting");
+                        context.swap_lock.release_swap_lock().await.expect("Shutdown signal received but failed to release swap lock. The swap process has been terminated but the swap lock is still active.");
+                        bail!("Shutdown signal received");
+                    },
+                    result = async {
+                        let (event_loop, mut event_loop_handle) =
+                            EventLoop::new(swap_id, swarm, seller_peer_id)?;
+                        let event_loop = tokio::spawn(event_loop.run().in_current_span());
+
+                        let bid_quote = event_loop_handle.request_quote().await?;
+
+                        Ok::<_, anyhow::Error>((event_loop, event_loop_handle, bid_quote))
+                    } => {
+                        result
+                    },
+                };
+
+                let (event_loop, event_loop_handle, bid_quote) = match initialize_swap {
+                    Ok(result) => result,
+                    Err(error) => {
+                        tracing::error!(%swap_id, "Swap initialization failed: {:#}", error);
+                        context
+                            .swap_lock
+                            .release_swap_lock()
+                            .await
+                            .expect("Could not release swap lock");
+                        bail!(error);
+                    }
+                };
+
+                context.tasks.clone().spawn(async move {
+                    tokio::select! {
+                        biased;
+                        _ = context.swap_lock.listen_for_swap_force_suspension() => {
+                            tracing::debug!("Shutdown signal received, exiting");
+                            context.swap_lock.release_swap_lock().await.expect("Shutdown signal received but failed to release swap lock. The swap process has been terminated but the swap lock is still active.");
+                            bail!("Shutdown signal received");
+                        },
+                        event_loop_result = event_loop => {
+                            match event_loop_result {
+                                Ok(_) => {
+                                    tracing::debug!(%swap_id, "EventLoop completed")
+                                }
+                                Err(error) => {
+                                    tracing::error!(%swap_id, "EventLoop failed: {:#}", error)
+                                }
+                            }
+                        },
+                        swap_result = async {
+                            let max_givable = || bitcoin_wallet.max_giveable(TxLock::script_size());
+                            let estimate_fee = |amount| bitcoin_wallet.estimate_fee(TxLock::weight(), amount);
+
+                            let determine_amount = determine_btc_to_swap(
+                                context.config.json,
+                                bid_quote,
+                                bitcoin_wallet.new_address(),
+                                || bitcoin_wallet.balance(),
+                                max_givable,
+                                || bitcoin_wallet.sync(),
+                                estimate_fee,
+                            );
+
+                            let (amount, fees) = match determine_amount.await {
+                                Ok(val) => val,
+                                Err(error) => match error.downcast::<ZeroQuoteReceived>() {
+                                    Ok(_) => {
+                                        bail!("Seller's XMR balance is currently too low to initiate a swap, please try again later")
+                                    }
+                                    Err(other) => bail!(other),
+                                },
+                            };
+
+                            tracing::info!(%amount, %fees,  "Determined swap amount");
+
+                            context.db.insert_peer_id(swap_id, seller_peer_id).await?;
+
+                            let swap = Swap::new(
+                                Arc::clone(&context.db),
+                                swap_id,
+                                Arc::clone(&bitcoin_wallet),
+                                monero_wallet,
+                                env_config,
+                                event_loop_handle,
+                                monero_receive_address,
+                                bitcoin_change_address,
+                                amount,
+                            );
+
+                            bob::run(swap).await
+                        } => {
+                            match swap_result {
+                                Ok(state) => {
+                                    tracing::debug!(%swap_id, state=%state, "Swap completed")
+                                }
+                                Err(error) => {
+                                    tracing::error!(%swap_id, "Failed to complete swap: {:#}", error)
+                                }
+                            }
+                        },
+                    };
+                    tracing::debug!(%swap_id, "Swap completed");
+
+                    context
+                        .swap_lock
+                        .release_swap_lock()
+                        .await
+                        .expect("Could not release swap lock");
+                    Ok::<_, anyhow::Error>(())
+                }.in_current_span()).await;
+
+                Ok(json!({
+                    "swapId": swap_id.to_string(),
+                    "quote": bid_quote,
+                }))
+            }
+            Method::Resume { swap_id } => {
+                context.swap_lock.acquire_swap_lock(swap_id).await?;
+
+                let seller_peer_id = context.db.get_peer_id(swap_id).await?;
+                let seller_addresses = context.db.get_addresses(seller_peer_id).await?;
+
+                let seed = context
+                    .config
+                    .seed
+                    .as_ref()
+                    .context("Could not get seed")?
+                    .derive_libp2p_identity();
+
+                let behaviour = cli::Behaviour::new(
+                    seller_peer_id,
+                    context.config.env_config,
+                    Arc::clone(
+                        context
+                            .bitcoin_wallet
+                            .as_ref()
+                            .context("Could not get Bitcoin wallet")?,
+                    ),
+                    (seed.clone(), context.config.namespace),
+                );
+                let mut swarm =
+                    swarm::cli(seed.clone(), context.config.tor_socks5_port, behaviour).await?;
+                let our_peer_id = swarm.local_peer_id();
+
+                tracing::debug!(peer_id = %our_peer_id, "Network layer initialized");
+
+                for seller_address in seller_addresses {
+                    swarm
+                        .behaviour_mut()
+                        .add_address(seller_peer_id, seller_address);
+                }
+
+                let (event_loop, event_loop_handle) =
+                    EventLoop::new(swap_id, swarm, seller_peer_id)?;
+                let monero_receive_address = context.db.get_monero_address(swap_id).await?;
+                let swap = Swap::from_db(
+                    Arc::clone(&context.db),
+                    swap_id,
+                    Arc::clone(
+                        context
+                            .bitcoin_wallet
+                            .as_ref()
+                            .context("Could not get Bitcoin wallet")?,
+                    ),
+                    Arc::clone(
+                        context
+                            .monero_wallet
+                            .as_ref()
+                            .context("Could not get Monero wallet")?,
+                    ),
+                    context.config.env_config,
+                    event_loop_handle,
+                    monero_receive_address,
+                )
+                .await?;
+
+                context.tasks.clone().spawn(
+                    async move {
+                        let handle = tokio::spawn(event_loop.run().in_current_span());
+                        tokio::select! {
+                            biased;
+                            _ = context.swap_lock.listen_for_swap_force_suspension() => {
+                                 tracing::debug!("Shutdown signal received, exiting");
+                                context.swap_lock.release_swap_lock().await.expect("Shutdown signal received but failed to release swap lock. The swap process has been terminated but the swap lock is still active.");
+                                bail!("Shutdown signal received");
+                            },
+
+                            event_loop_result = handle => {
+                                match event_loop_result {
+                                    Ok(_) => {
+                                        tracing::debug!(%swap_id, "EventLoop completed during swap resume")
+                                    }
+                                    Err(error) => {
+                                        tracing::error!(%swap_id, "EventLoop failed during swap resume: {:#}", error)
+                                    }
+                                }
+                            },
+                            swap_result = bob::run(swap) => {
+                                match swap_result {
+                                    Ok(state) => {
+                                        tracing::debug!(%swap_id, state=%state, "Swap completed after resuming")
+                                    }
+                                    Err(error) => {
+                                        tracing::error!(%swap_id, "Failed to resume swap: {:#}", error)
+                                    }
+                                }
+
+                            }
+                        }
+                        context
+                            .swap_lock
+                            .release_swap_lock()
+                            .await
+                            .expect("Could not release swap lock");
+                        Ok::<(), anyhow::Error>(())
+                    }
+                    .in_current_span(),
+                ).await;
+                Ok(json!({
+                    "result": "ok",
+                }))
+            }
+            Method::CancelAndRefund { swap_id } => {
+                let bitcoin_wallet = context
+                    .bitcoin_wallet
+                    .as_ref()
+                    .context("Could not get Bitcoin wallet")?;
+
+                context.swap_lock.acquire_swap_lock(swap_id).await?;
+
+                let state = cli::cancel_and_refund(
+                    swap_id,
+                    Arc::clone(bitcoin_wallet),
+                    Arc::clone(&context.db),
+                )
+                .await;
+
+                context
+                    .swap_lock
+                    .release_swap_lock()
+                    .await
+                    .expect("Could not release swap lock");
+
+                state.map(|state| {
+                    json!({
+                        "result": state,
+                    })
+                })
+            }
+            Method::History => {
+                let swaps = context.db.all().await?;
+                let mut vec: Vec<(Uuid, String)> = Vec::new();
+                for (swap_id, state) in swaps {
+                    let state: BobState = state.try_into()?;
+                    vec.push((swap_id, state.to_string()));
+                }
+
+                Ok(json!({ "swaps": vec }))
+            }
+            Method::GetRawStates => {
+                let raw_history = context.db.raw_all().await?;
+
+                Ok(json!({ "raw_states": raw_history }))
+            }
+            Method::Config => {
+                let data_dir_display = context.config.data_dir.display();
+                tracing::info!(path=%data_dir_display, "Data directory");
+                tracing::info!(path=%format!("{}/logs", data_dir_display), "Log files directory");
+                tracing::info!(path=%format!("{}/sqlite", data_dir_display), "Sqlite file location");
+                tracing::info!(path=%format!("{}/seed.pem", data_dir_display), "Seed file location");
+                tracing::info!(path=%format!("{}/monero", data_dir_display), "Monero-wallet-rpc directory");
+                tracing::info!(path=%format!("{}/wallet", data_dir_display), "Internal bitcoin wallet directory");
+
+                Ok(json!({
+                    "log_files": format!("{}/logs", data_dir_display),
+                    "sqlite": format!("{}/sqlite", data_dir_display),
+                    "seed": format!("{}/seed.pem", data_dir_display),
+                    "monero-wallet-rpc": format!("{}/monero", data_dir_display),
+                    "bitcoin_wallet": format!("{}/wallet", data_dir_display),
+                }))
+            }
+            Method::WithdrawBtc { address, amount } => {
+                let bitcoin_wallet = context
+                    .bitcoin_wallet
+                    .as_ref()
+                    .context("Could not get Bitcoin wallet")?;
+
+                let amount = match amount {
+                    Some(amount) => amount,
+                    None => {
+                        bitcoin_wallet
+                            .max_giveable(address.script_pubkey().len())
+                            .await?
+                    }
+                };
+                let psbt = bitcoin_wallet
+                    .send_to_address(address, amount, None)
+                    .await?;
+                let signed_tx = bitcoin_wallet.sign_and_finalize(psbt).await?;
+
+                bitcoin_wallet
+                    .broadcast(signed_tx.clone(), "withdraw")
+                    .await?;
+
+                Ok(json!({
+                    "signed_tx": signed_tx,
+                    "amount": amount.to_sat(),
+                    "txid": signed_tx.txid(),
+                }))
+            }
+            Method::StartDaemon { server_address } => {
+                // Default to 127.0.0.1:1234
+                let server_address = server_address.unwrap_or("127.0.0.1:1234".parse()?);
+
+                let (addr, server_handle) =
+                    rpc::run_server(server_address, Arc::clone(&context)).await?;
+
+                tracing::info!(%addr, "Started RPC server");
+
+                server_handle.stopped().await;
+
+                tracing::info!("Stopped RPC server");
+
+                Ok(json!({}))
+            }
+            Method::Balance { force_refresh } => {
+                let bitcoin_wallet = context
+                    .bitcoin_wallet
+                    .as_ref()
+                    .context("Could not get Bitcoin wallet")?;
+
+                if force_refresh {
+                    bitcoin_wallet.sync().await?;
+                }
+
+                let bitcoin_balance = bitcoin_wallet.balance().await?;
+
+                if force_refresh {
+                    tracing::info!(
+                        balance = %bitcoin_balance,
+                        "Checked Bitcoin balance",
+                    );
+                } else {
+                    tracing::debug!(
+                        balance = %bitcoin_balance,
+                        "Current Bitcoin balance as of last sync",
+                    );
+                }
+
+                Ok(json!({
+                    "balance": bitcoin_balance.to_sat()
+                }))
+            }
+            Method::ListSellers { rendezvous_point } => {
+                let rendezvous_node_peer_id = rendezvous_point
+                    .extract_peer_id()
+                    .context("Rendezvous node address must contain peer ID")?;
+
+                let identity = context
+                    .config
+                    .seed
+                    .as_ref()
+                    .context("Cannot extract seed")?
+                    .derive_libp2p_identity();
+
+                let sellers = list_sellers(
+                    rendezvous_node_peer_id,
+                    rendezvous_point,
+                    context.config.namespace,
+                    context.config.tor_socks5_port,
+                    identity,
+                )
+                .await?;
+
+                for seller in &sellers {
+                    match seller.status {
+                        SellerStatus::Online(quote) => {
+                            tracing::info!(
+                                price = %quote.price.to_string(),
+                                min_quantity = %quote.min_quantity.to_string(),
+                                max_quantity = %quote.max_quantity.to_string(),
+                                status = "Online",
+                                address = %seller.multiaddr.to_string(),
+                                "Fetched peer status"
+                            );
+                        }
+                        SellerStatus::Unreachable => {
+                            tracing::info!(
+                                status = "Unreachable",
+                                address = %seller.multiaddr.to_string(),
+                                "Fetched peer status"
+                            );
+                        }
+                    }
+                }
+
+                Ok(json!({ "sellers": sellers }))
+            }
+            Method::ExportBitcoinWallet => {
+                let bitcoin_wallet = context
+                    .bitcoin_wallet
+                    .as_ref()
+                    .context("Could not get Bitcoin wallet")?;
+
+                let wallet_export = bitcoin_wallet.wallet_export("cli").await?;
+                tracing::info!(descriptor=%wallet_export.to_string(), "Exported bitcoin wallet");
+                Ok(json!({
+                    "descriptor": wallet_export.to_string(),
+                }))
+            }
+            Method::MoneroRecovery { swap_id } => {
+                let swap_state: BobState = context.db.get_state(swap_id).await?.try_into()?;
+
+                if let BobState::BtcRedeemed(state5) = swap_state {
+                    let (spend_key, view_key) = state5.xmr_keys();
+                    let restore_height = state5.monero_wallet_restore_blockheight.height;
+
+                    let address = monero::Address::standard(
+                        context.config.env_config.monero_network,
+                        monero::PublicKey::from_private_key(&spend_key),
+                        monero::PublicKey::from(view_key.public()),
+                    );
+
+                    tracing::info!(restore_height=%restore_height, address=%address, spend_key=%spend_key, view_key=%view_key, "Monero recovery information");
+
+                    Ok(json!({
+                        "address": address,
+                        "spend_key": spend_key.to_string(),
+                        "view_key": view_key.to_string(),
+                        "restore_height": state5.monero_wallet_restore_blockheight.height,
+                    }))
+                } else {
+                    bail!(
+                        "Cannot print monero recovery information in state {}, only possible for BtcRedeemed",
+                        swap_state
+                    )
+                }
+            }
+            Method::GetCurrentSwap => Ok(json!({
+                "swap_id": context.swap_lock.get_current_swap_id().await
+            })),
+        }
+    }
+
+    pub async fn call(self, context: Arc<Context>) -> Result<serde_json::Value> {
+        let method_span = self.cmd.get_tracing_span(self.log_reference.clone());
+
+        self.handle_cmd(context)
+            .instrument(method_span.clone())
+            .await
+            .map_err(|err| {
+                method_span.in_scope(|| {
+                    tracing::debug!(err = format!("{:?}", err), "API call resulted in an error");
+                });
+                err
+            })
+    }
+}
+
+fn qr_code(value: &impl ToString) -> Result<String> {
+    let code = QrCode::new(value.to_string())?;
+    let qr_code = code
+        .render::<unicode::Dense1x2>()
+        .dark_color(unicode::Dense1x2::Light)
+        .light_color(unicode::Dense1x2::Dark)
+        .build();
+    Ok(qr_code)
+}
+
+pub async fn determine_btc_to_swap<FB, TB, FMG, TMG, FS, TS, FFE, TFE>(
+    json: bool,
+    bid_quote: BidQuote,
+    get_new_address: impl Future<Output = Result<bitcoin::Address>>,
+    balance: FB,
+    max_giveable_fn: FMG,
+    sync: FS,
+    estimate_fee: FFE,
+) -> Result<(Amount, Amount)>
+where
+    TB: Future<Output = Result<Amount>>,
+    FB: Fn() -> TB,
+    TMG: Future<Output = Result<Amount>>,
+    FMG: Fn() -> TMG,
+    TS: Future<Output = Result<()>>,
+    FS: Fn() -> TS,
+    FFE: Fn(Amount) -> TFE,
+    TFE: Future<Output = Result<Amount>>,
+{
+    if bid_quote.max_quantity == Amount::ZERO {
+        bail!(ZeroQuoteReceived)
+    }
+
+    tracing::info!(
+        price = %bid_quote.price,
+        minimum_amount = %bid_quote.min_quantity,
+        maximum_amount = %bid_quote.max_quantity,
+        "Received quote",
+    );
+
+    sync().await?;
+    let mut max_giveable = max_giveable_fn().await?;
+
+    if max_giveable == Amount::ZERO || max_giveable < bid_quote.min_quantity {
+        let deposit_address = get_new_address.await?;
+        let minimum_amount = bid_quote.min_quantity;
+        let maximum_amount = bid_quote.max_quantity;
+
+        if !json {
+            eprintln!("{}", qr_code(&deposit_address)?);
+        }
+
+        loop {
+            let min_outstanding = bid_quote.min_quantity - max_giveable;
+            let min_fee = estimate_fee(min_outstanding).await?;
+            let min_deposit = min_outstanding + min_fee;
+
+            tracing::info!(
+                "Deposit at least {} to cover the min quantity with fee!",
+                min_deposit
+            );
+            tracing::info!(
+                %deposit_address,
+                %min_deposit,
+                %max_giveable,
+                %minimum_amount,
+                %maximum_amount,
+                "Waiting for Bitcoin deposit",
+            );
+
+            max_giveable = loop {
+                sync().await?;
+                let new_max_givable = max_giveable_fn().await?;
+
+                if new_max_givable > max_giveable {
+                    break new_max_givable;
+                }
+
+                tokio::time::sleep(Duration::from_secs(1)).await;
+            };
+
+            let new_balance = balance().await?;
+            tracing::info!(%new_balance, %max_giveable, "Received Bitcoin");
+
+            if max_giveable < bid_quote.min_quantity {
+                tracing::info!("Deposited amount is less than `min_quantity`");
+                continue;
+            }
+
+            break;
+        }
+    };
+
+    let balance = balance().await?;
+    let fees = balance - max_giveable;
+    let max_accepted = bid_quote.max_quantity;
+    let btc_swap_amount = min(max_giveable, max_accepted);
+
+    Ok((btc_swap_amount, fees))
+}

swap/src/bin/swap.rs

@@ -12,43 +12,15 @@
 #![forbid(unsafe_code)]
 #![allow(non_snake_case)]
 
-use anyhow::{bail, Context, Result};
+use anyhow::Result;
-use comfy_table::Table;
-use qrcode::render::unicode;
-use qrcode::QrCode;
-use std::cmp::min;
-use std::convert::TryInto;
 use std::env;
-use std::future::Future;
+use swap::cli::command::{parse_args_and_apply_defaults, ParseResult};
-use std::path::PathBuf;
-use std::sync::Arc;
-use std::time::Duration;
-use swap::bitcoin::TxLock;
-use swap::cli::command::{parse_args_and_apply_defaults, Arguments, Command, ParseResult};
-use swap::cli::{list_sellers, EventLoop, SellerStatus};
 use swap::common::check_latest_version;
-use swap::database::open_db;
-use swap::env::Config;
-use swap::libp2p_ext::MultiAddrExt;
-use swap::network::quote::{BidQuote, ZeroQuoteReceived};
-use swap::network::swarm;
-use swap::protocol::bob;
-use swap::protocol::bob::{BobState, Swap};
-use swap::seed::Seed;
-use swap::{bitcoin, cli, monero};
-use url::Url;
-use uuid::Uuid;
 
 #[tokio::main]
 async fn main() -> Result<()> {
-    let Arguments {
+    let (context, request) = match parse_args_and_apply_defaults(env::args_os()).await? {
-        env_config,
+        ParseResult::Context(context, request) => (context, request),
-        data_dir,
-        debug,
-        json,
-        cmd,
-    } = match parse_args_and_apply_defaults(env::args_os())? {
-        ParseResult::Arguments(args) => *args,
         ParseResult::PrintAndExitZero { message } => {
             println!("{}", message);
             std::process::exit(0);
@@ -58,601 +30,19 @@ async fn main() -> Result<()> {
     if let Err(e) = check_latest_version(env!("CARGO_PKG_VERSION")).await {
         eprintln!("{}", e);
     }
-
+    request.call(context.clone()).await?;
-    match cmd {
+    context.tasks.wait_for_tasks().await?;
-        Command::BuyXmr {
-            seller,
-            bitcoin_electrum_rpc_url,
-            bitcoin_target_block,
-            bitcoin_change_address,
-            monero_receive_address,
-            monero_daemon_address,
-            tor_socks5_port,
-            namespace,
-        } => {
-            let swap_id = Uuid::new_v4();
-
-            cli::tracing::init(debug, json, data_dir.join("logs"), Some(swap_id))?;
-
-            let db = open_db(data_dir.join("sqlite")).await?;
-            let seed = Seed::from_file_or_generate(data_dir.as_path())
-                .context("Failed to read in seed file")?;
-
-            let bitcoin_wallet = init_bitcoin_wallet(
-                bitcoin_electrum_rpc_url,
-                &seed,
-                data_dir.clone(),
-                env_config,
-                bitcoin_target_block,
-            )
-            .await?;
-            let (monero_wallet, _process) =
-                init_monero_wallet(data_dir, monero_daemon_address, env_config).await?;
-            let bitcoin_wallet = Arc::new(bitcoin_wallet);
-            let seller_peer_id = seller
-                .extract_peer_id()
-                .context("Seller address must contain peer ID")?;
-            db.insert_address(seller_peer_id, seller.clone()).await?;
-
-            let behaviour = cli::Behaviour::new(
-                seller_peer_id,
-                env_config,
-                bitcoin_wallet.clone(),
-                (seed.derive_libp2p_identity(), namespace),
-            );
-            let mut swarm =
-                swarm::cli(seed.derive_libp2p_identity(), tor_socks5_port, behaviour).await?;
-            swarm.behaviour_mut().add_address(seller_peer_id, seller);
-
-            tracing::debug!(peer_id = %swarm.local_peer_id(), "Network layer initialized");
-
-            let (event_loop, mut event_loop_handle) =
-                EventLoop::new(swap_id, swarm, seller_peer_id)?;
-            let event_loop = tokio::spawn(event_loop.run());
-
-            let max_givable = || bitcoin_wallet.max_giveable(TxLock::script_size());
-            let estimate_fee = |amount| bitcoin_wallet.estimate_fee(TxLock::weight(), amount);
-
-            let (amount, fees) = match determine_btc_to_swap(
-                json,
-                event_loop_handle.request_quote(),
-                bitcoin_wallet.new_address(),
-                || bitcoin_wallet.balance(),
-                max_givable,
-                || bitcoin_wallet.sync(),
-                estimate_fee,
-            )
-            .await
-            {
-                Ok(val) => val,
-                Err(error) => match error.downcast::<ZeroQuoteReceived>() {
-                    Ok(_) => {
-                        bail!("Seller's XMR balance is currently too low to initiate a swap, please try again later")
-                    }
-                    Err(other) => bail!(other),
-                },
-            };
-
-            tracing::info!(%amount, %fees,  "Determined swap amount");
-
-            db.insert_peer_id(swap_id, seller_peer_id).await?;
-            db.insert_monero_address(swap_id, monero_receive_address)
-                .await?;
-
-            let swap = Swap::new(
-                db,
-                swap_id,
-                bitcoin_wallet,
-                Arc::new(monero_wallet),
-                env_config,
-                event_loop_handle,
-                monero_receive_address,
-                bitcoin_change_address,
-                amount,
-            );
-
-            tokio::select! {
-                result = event_loop => {
-                    result
-                        .context("EventLoop panicked")?;
-                },
-                result = bob::run(swap) => {
-                    result.context("Failed to complete swap")?;
-                }
-            }
-        }
-        Command::History => {
-            cli::tracing::init(debug, json, data_dir.join("logs"), None)?;
-
-            let db = open_db(data_dir.join("sqlite")).await?;
-            let swaps = db.all().await?;
-
-            if json {
-                for (swap_id, state) in swaps {
-                    let state: BobState = state.try_into()?;
-                    tracing::info!(swap_id=%swap_id.to_string(), state=%state.to_string(), "Read swap state from database");
-                }
-            } else {
-                let mut table = Table::new();
-
-                table.set_header(vec!["SWAP ID", "STATE"]);
-
-                for (swap_id, state) in swaps {
-                    let state: BobState = state.try_into()?;
-                    table.add_row(vec![swap_id.to_string(), state.to_string()]);
-                }
-
-                println!("{}", table);
-            }
-        }
-        Command::Config => {
-            cli::tracing::init(debug, json, data_dir.join("logs"), None)?;
-
-            tracing::info!(path=%data_dir.display(), "Data directory");
-            tracing::info!(path=%format!("{}/logs", data_dir.display()), "Log files directory");
-            tracing::info!(path=%format!("{}/sqlite", data_dir.display()), "Sqlite file location");
-            tracing::info!(path=%format!("{}/seed.pem", data_dir.display()), "Seed file location");
-            tracing::info!(path=%format!("{}/monero", data_dir.display()), "Monero-wallet-rpc directory");
-            tracing::info!(path=%format!("{}/wallet", data_dir.display()), "Internal bitcoin wallet directory");
-        }
-        Command::WithdrawBtc {
-            bitcoin_electrum_rpc_url,
-            bitcoin_target_block,
-            amount,
-            address,
-        } => {
-            cli::tracing::init(debug, json, data_dir.join("logs"), None)?;
-
-            let seed = Seed::from_file_or_generate(data_dir.as_path())
-                .context("Failed to read in seed file")?;
-            let bitcoin_wallet = init_bitcoin_wallet(
-                bitcoin_electrum_rpc_url,
-                &seed,
-                data_dir.clone(),
-                env_config,
-                bitcoin_target_block,
-            )
-            .await?;
-
-            let amount = match amount {
-                Some(amount) => amount,
-                None => {
-                    bitcoin_wallet
-                        .max_giveable(address.script_pubkey().len())
-                        .await?
-                }
-            };
-
-            let psbt = bitcoin_wallet
-                .send_to_address(address, amount, None)
-                .await?;
-            let signed_tx = bitcoin_wallet.sign_and_finalize(psbt).await?;
-
-            bitcoin_wallet.broadcast(signed_tx, "withdraw").await?;
-        }
-
-        Command::Balance {
-            bitcoin_electrum_rpc_url,
-            bitcoin_target_block,
-        } => {
-            cli::tracing::init(debug, json, data_dir.join("logs"), None)?;
-
-            let seed = Seed::from_file_or_generate(data_dir.as_path())
-                .context("Failed to read in seed file")?;
-            let bitcoin_wallet = init_bitcoin_wallet(
-                bitcoin_electrum_rpc_url,
-                &seed,
-                data_dir.clone(),
-                env_config,
-                bitcoin_target_block,
-            )
-            .await?;
-
-            let bitcoin_balance = bitcoin_wallet.balance().await?;
-            tracing::info!(
-                balance = %bitcoin_balance,
-                "Checked Bitcoin balance",
-            );
-        }
-        Command::Resume {
-            swap_id,
-            bitcoin_electrum_rpc_url,
-            bitcoin_target_block,
-            monero_daemon_address,
-            tor_socks5_port,
-            namespace,
-        } => {
-            cli::tracing::init(debug, json, data_dir.join("logs"), Some(swap_id))?;
-
-            let db = open_db(data_dir.join("sqlite")).await?;
-            let seed = Seed::from_file_or_generate(data_dir.as_path())
-                .context("Failed to read in seed file")?;
-
-            let bitcoin_wallet = init_bitcoin_wallet(
-                bitcoin_electrum_rpc_url,
-                &seed,
-                data_dir.clone(),
-                env_config,
-                bitcoin_target_block,
-            )
-            .await?;
-            let (monero_wallet, _process) =
-                init_monero_wallet(data_dir, monero_daemon_address, env_config).await?;
-            let bitcoin_wallet = Arc::new(bitcoin_wallet);
-
-            let seller_peer_id = db.get_peer_id(swap_id).await?;
-            let seller_addresses = db.get_addresses(seller_peer_id).await?;
-
-            let behaviour = cli::Behaviour::new(
-                seller_peer_id,
-                env_config,
-                bitcoin_wallet.clone(),
-                (seed.derive_libp2p_identity(), namespace),
-            );
-            let mut swarm =
-                swarm::cli(seed.derive_libp2p_identity(), tor_socks5_port, behaviour).await?;
-            let our_peer_id = swarm.local_peer_id();
-            tracing::debug!(peer_id = %our_peer_id, "Network layer initialized");
-
-            for seller_address in seller_addresses {
-                swarm
-                    .behaviour_mut()
-                    .add_address(seller_peer_id, seller_address);
-            }
-
-            let (event_loop, event_loop_handle) = EventLoop::new(swap_id, swarm, seller_peer_id)?;
-            let handle = tokio::spawn(event_loop.run());
-
-            let monero_receive_address = db.get_monero_address(swap_id).await?;
-            let swap = Swap::from_db(
-                db,
-                swap_id,
-                bitcoin_wallet,
-                Arc::new(monero_wallet),
-                env_config,
-                event_loop_handle,
-                monero_receive_address,
-            )
-            .await?;
-
-            tokio::select! {
-                event_loop_result = handle => {
-                    event_loop_result?;
-                },
-                swap_result = bob::run(swap) => {
-                    swap_result?;
-                }
-            }
-        }
-        Command::CancelAndRefund {
-            swap_id,
-            bitcoin_electrum_rpc_url,
-            bitcoin_target_block,
-        } => {
-            cli::tracing::init(debug, json, data_dir.join("logs"), Some(swap_id))?;
-
-            let db = open_db(data_dir.join("sqlite")).await?;
-            let seed = Seed::from_file_or_generate(data_dir.as_path())
-                .context("Failed to read in seed file")?;
-
-            let bitcoin_wallet = init_bitcoin_wallet(
-                bitcoin_electrum_rpc_url,
-                &seed,
-                data_dir,
-                env_config,
-                bitcoin_target_block,
-            )
-            .await?;
-
-            cli::cancel_and_refund(swap_id, Arc::new(bitcoin_wallet), db).await?;
-        }
-        Command::ListSellers {
-            rendezvous_point,
-            namespace,
-            tor_socks5_port,
-        } => {
-            let rendezvous_node_peer_id = rendezvous_point
-                .extract_peer_id()
-                .context("Rendezvous node address must contain peer ID")?;
-
-            cli::tracing::init(debug, json, data_dir.join("logs"), None)?;
-
-            let seed = Seed::from_file_or_generate(data_dir.as_path())
-                .context("Failed to read in seed file")?;
-            let identity = seed.derive_libp2p_identity();
-
-            let sellers = list_sellers(
-                rendezvous_node_peer_id,
-                rendezvous_point,
-                namespace,
-                tor_socks5_port,
-                identity,
-            )
-            .await?;
-
-            if json {
-                for seller in sellers {
-                    match seller.status {
-                        SellerStatus::Online(quote) => {
-                            tracing::info!(
-                                price = %quote.price.to_string(),
-                                min_quantity = %quote.min_quantity.to_string(),
-                                max_quantity = %quote.max_quantity.to_string(),
-                                status = "Online",
-                                address = %seller.multiaddr.to_string(),
-                                "Fetched peer status"
-                            );
-                        }
-                        SellerStatus::Unreachable => {
-                            tracing::info!(
-                                status = "Unreachable",
-                                address = %seller.multiaddr.to_string(),
-                                "Fetched peer status"
-                            );
-                        }
-                    }
-                }
-            } else {
-                let mut table = Table::new();
-
-                table.set_header(vec![
-                    "PRICE",
-                    "MIN_QUANTITY",
-                    "MAX_QUANTITY",
-                    "STATUS",
-                    "ADDRESS",
-                ]);
-
-                for seller in sellers {
-                    let row = match seller.status {
-                        SellerStatus::Online(quote) => {
-                            vec![
-                                quote.price.to_string(),
-                                quote.min_quantity.to_string(),
-                                quote.max_quantity.to_string(),
-                                "Online".to_owned(),
-                                seller.multiaddr.to_string(),
-                            ]
-                        }
-                        SellerStatus::Unreachable => {
-                            vec![
-                                "???".to_owned(),
-                                "???".to_owned(),
-                                "???".to_owned(),
-                                "Unreachable".to_owned(),
-                                seller.multiaddr.to_string(),
-                            ]
-                        }
-                    };
-
-                    table.add_row(row);
-                }
-
-                println!("{}", table);
-            }
-        }
-        Command::ExportBitcoinWallet {
-            bitcoin_electrum_rpc_url,
-            bitcoin_target_block,
-        } => {
-            cli::tracing::init(debug, json, data_dir.join("logs"), None)?;
-
-            let seed = Seed::from_file_or_generate(data_dir.as_path())
-                .context("Failed to read in seed file")?;
-            let bitcoin_wallet = init_bitcoin_wallet(
-                bitcoin_electrum_rpc_url,
-                &seed,
-                data_dir.clone(),
-                env_config,
-                bitcoin_target_block,
-            )
-            .await?;
-            let wallet_export = bitcoin_wallet.wallet_export("cli").await?;
-            tracing::info!(descriptor=%wallet_export.to_string(), "Exported bitcoin wallet");
-        }
-        Command::MoneroRecovery { swap_id } => {
-            cli::tracing::init(debug, json, data_dir.join("logs"), Some(swap_id))?;
-
-            let db = open_db(data_dir.join("sqlite")).await?;
-
-            let swap_state: BobState = db.get_state(swap_id).await?.try_into()?;
-
-            match swap_state {
-                BobState::Started { .. }
-                | BobState::SwapSetupCompleted(_)
-                | BobState::BtcLocked { .. }
-                | BobState::XmrLockProofReceived { .. }
-                | BobState::XmrLocked(_)
-                | BobState::EncSigSent(_)
-                | BobState::CancelTimelockExpired(_)
-                | BobState::BtcCancelled(_)
-                | BobState::BtcRefunded(_)
-                | BobState::BtcPunished { .. }
-                | BobState::SafelyAborted
-                | BobState::XmrRedeemed { .. } => {
-                    bail!("Cannot print monero recovery information in state {}, only possible for BtcRedeemed", swap_state)
-                }
-                BobState::BtcRedeemed(state5) => {
-                    let (spend_key, view_key) = state5.xmr_keys();
-
-                    let address = monero::Address::standard(
-                        env_config.monero_network,
-                        monero::PublicKey::from_private_key(&spend_key),
-                        monero::PublicKey::from(view_key.public()),
-                    );
-                    tracing::info!("Wallet address: {}", address.to_string());
-
-                    let view_key = serde_json::to_string(&view_key)?;
-                    println!("View key: {}", view_key);
-
-                    println!("Spend key: {}", spend_key);
-                }
-            }
-        }
-    };
     Ok(())
 }
 
-async fn init_bitcoin_wallet(
-    electrum_rpc_url: Url,
-    seed: &Seed,
-    data_dir: PathBuf,
-    env_config: Config,
-    bitcoin_target_block: usize,
-) -> Result<bitcoin::Wallet> {
-    tracing::debug!("Initializing bitcoin wallet");
-    let xprivkey = seed.derive_extended_private_key(env_config.bitcoin_network)?;
-
-    let wallet = bitcoin::Wallet::new(
-        electrum_rpc_url.clone(),
-        data_dir,
-        xprivkey,
-        env_config,
-        bitcoin_target_block,
-    )
-    .await
-    .context("Failed to initialize Bitcoin wallet")?;
-
-    tracing::debug!("Syncing bitcoin wallet");
-    wallet.sync().await?;
-
-    Ok(wallet)
-}
-
-async fn init_monero_wallet(
-    data_dir: PathBuf,
-    monero_daemon_address: Option<String>,
-    env_config: Config,
-) -> Result<(monero::Wallet, monero::WalletRpcProcess)> {
-    let network = env_config.monero_network;
-
-    const MONERO_BLOCKCHAIN_MONITORING_WALLET_NAME: &str = "swap-tool-blockchain-monitoring-wallet";
-
-    let monero_wallet_rpc = monero::WalletRpc::new(data_dir.join("monero")).await?;
-
-    let monero_wallet_rpc_process = monero_wallet_rpc
-        .run(network, monero_daemon_address)
-        .await?;
-
-    let monero_wallet = monero::Wallet::open_or_create(
-        monero_wallet_rpc_process.endpoint(),
-        MONERO_BLOCKCHAIN_MONITORING_WALLET_NAME.to_string(),
-        env_config,
-    )
-    .await?;
-
-    Ok((monero_wallet, monero_wallet_rpc_process))
-}
-
-fn qr_code(value: &impl ToString) -> Result<String> {
-    let code = QrCode::new(value.to_string())?;
-    let qr_code = code
-        .render::<unicode::Dense1x2>()
-        .dark_color(unicode::Dense1x2::Light)
-        .light_color(unicode::Dense1x2::Dark)
-        .build();
-    Ok(qr_code)
-}
-
-async fn determine_btc_to_swap<FB, TB, FMG, TMG, FS, TS, FFE, TFE>(
-    json: bool,
-    bid_quote: impl Future<Output = Result<BidQuote>>,
-    get_new_address: impl Future<Output = Result<bitcoin::Address>>,
-    balance: FB,
-    max_giveable_fn: FMG,
-    sync: FS,
-    estimate_fee: FFE,
-) -> Result<(bitcoin::Amount, bitcoin::Amount)>
-where
-    TB: Future<Output = Result<bitcoin::Amount>>,
-    FB: Fn() -> TB,
-    TMG: Future<Output = Result<bitcoin::Amount>>,
-    FMG: Fn() -> TMG,
-    TS: Future<Output = Result<()>>,
-    FS: Fn() -> TS,
-    FFE: Fn(bitcoin::Amount) -> TFE,
-    TFE: Future<Output = Result<bitcoin::Amount>>,
-{
-    tracing::debug!("Requesting quote");
-    let bid_quote = bid_quote.await?;
-
-    if bid_quote.max_quantity == bitcoin::Amount::ZERO {
-        bail!(ZeroQuoteReceived)
-    }
-
-    tracing::info!(
-        price = %bid_quote.price,
-        minimum_amount = %bid_quote.min_quantity,
-        maximum_amount = %bid_quote.max_quantity,
-        "Received quote",
-    );
-
-    let mut max_giveable = max_giveable_fn().await?;
-
-    if max_giveable == bitcoin::Amount::ZERO || max_giveable < bid_quote.min_quantity {
-        let deposit_address = get_new_address.await?;
-        let minimum_amount = bid_quote.min_quantity;
-        let maximum_amount = bid_quote.max_quantity;
-
-        if !json {
-            eprintln!("{}", qr_code(&deposit_address)?);
-        }
-
-        loop {
-            let min_outstanding = bid_quote.min_quantity - max_giveable;
-            let min_fee = estimate_fee(min_outstanding).await?;
-            let min_deposit = min_outstanding + min_fee;
-
-            tracing::info!(
-                "Deposit at least {} to cover the min quantity with fee!",
-                min_deposit
-            );
-            tracing::info!(
-                %deposit_address,
-                %min_deposit,
-                %max_giveable,
-                %minimum_amount,
-                %maximum_amount,
-                "Waiting for Bitcoin deposit",
-            );
-
-            max_giveable = loop {
-                sync().await?;
-                let new_max_givable = max_giveable_fn().await?;
-
-                if new_max_givable > max_giveable {
-                    break new_max_givable;
-                }
-
-                tokio::time::sleep(Duration::from_secs(1)).await;
-            };
-
-            let new_balance = balance().await?;
-            tracing::info!(%new_balance, %max_giveable, "Received Bitcoin");
-
-            if max_giveable < bid_quote.min_quantity {
-                tracing::info!("Deposited amount is less than `min_quantity`");
-                continue;
-            }
-
-            break;
-        }
-    };
-
-    let balance = balance().await?;
-    let fees = balance - max_giveable;
-    let max_accepted = bid_quote.max_quantity;
-    let btc_swap_amount = min(max_giveable, max_accepted);
-
-    Ok((btc_swap_amount, fees))
-}
-
 #[cfg(test)]
 mod tests {
     use super::*;
-    use crate::determine_btc_to_swap;
     use ::bitcoin::Amount;
-    use std::sync::Mutex;
+    use std::sync::{Arc, Mutex};
+    use std::time::Duration;
+    use swap::api::request::determine_btc_to_swap;
+    use swap::network::quote::BidQuote;
     use swap::tracing_ext::capture_logs;
     use tracing::level_filters::LevelFilter;
 
@@ -666,7 +56,7 @@ mod tests {
 
         let (amount, fees) = determine_btc_to_swap(
             true,
-            async { Ok(quote_with_max(0.01)) },
+            quote_with_max(0.01),
             get_dummy_address(),
             || async { Ok(Amount::from_btc(0.001)?) },
             || async {
@@ -685,10 +75,10 @@ mod tests {
         assert_eq!((amount, fees), (expected_amount, expected_fees));
         assert_eq!(
             writer.captured(),
-            r" INFO swap: Received quote price=0.00100000 BTC minimum_amount=0.00000000 BTC maximum_amount=0.01000000 BTC
+            r" INFO swap::api::request: Received quote price=0.001 BTC minimum_amount=0 BTC maximum_amount=0.01 BTC
- INFO swap: Deposit at least 0.00001000 BTC to cover the min quantity with fee!
+ INFO swap::api::request: Deposit at least 0.00001 BTC to cover the min quantity with fee!
- INFO swap: Waiting for Bitcoin deposit deposit_address=1PdfytjS7C8wwd9Lq5o4x9aXA2YRqaCpH6 min_deposit=0.00001000 BTC max_giveable=0.00000000 BTC minimum_amount=0.00000000 BTC maximum_amount=0.01000000 BTC
+ INFO swap::api::request: Waiting for Bitcoin deposit deposit_address=1PdfytjS7C8wwd9Lq5o4x9aXA2YRqaCpH6 min_deposit=0.00001 BTC max_giveable=0 BTC minimum_amount=0 BTC maximum_amount=0.01 BTC
- INFO swap: Received Bitcoin new_balance=0.00100000 BTC max_giveable=0.00090000 BTC
+ INFO swap::api::request: Received Bitcoin new_balance=0.001 BTC max_giveable=0.0009 BTC
 "
         );
     }
@@ -703,7 +93,7 @@ mod tests {
 
         let (amount, fees) = determine_btc_to_swap(
             true,
-            async { Ok(quote_with_max(0.01)) },
+            quote_with_max(0.01),
             get_dummy_address(),
             || async { Ok(Amount::from_btc(0.1001)?) },
             || async {
@@ -722,10 +112,10 @@ mod tests {
         assert_eq!((amount, fees), (expected_amount, expected_fees));
         assert_eq!(
             writer.captured(),
-            r" INFO swap: Received quote price=0.00100000 BTC minimum_amount=0.00000000 BTC maximum_amount=0.01000000 BTC
+            r" INFO swap::api::request: Received quote price=0.001 BTC minimum_amount=0 BTC maximum_amount=0.01 BTC
- INFO swap: Deposit at least 0.00001000 BTC to cover the min quantity with fee!
+ INFO swap::api::request: Deposit at least 0.00001 BTC to cover the min quantity with fee!
- INFO swap: Waiting for Bitcoin deposit deposit_address=1PdfytjS7C8wwd9Lq5o4x9aXA2YRqaCpH6 min_deposit=0.00001000 BTC max_giveable=0.00000000 BTC minimum_amount=0.00000000 BTC maximum_amount=0.01000000 BTC
+ INFO swap::api::request: Waiting for Bitcoin deposit deposit_address=1PdfytjS7C8wwd9Lq5o4x9aXA2YRqaCpH6 min_deposit=0.00001 BTC max_giveable=0 BTC minimum_amount=0 BTC maximum_amount=0.01 BTC
- INFO swap: Received Bitcoin new_balance=0.10010000 BTC max_giveable=0.10000000 BTC
+ INFO swap::api::request: Received Bitcoin new_balance=0.1001 BTC max_giveable=0.1 BTC
 "
         );
     }
@@ -740,7 +130,7 @@ mod tests {
 
         let (amount, fees) = determine_btc_to_swap(
             true,
-            async { Ok(quote_with_max(0.01)) },
+            quote_with_max(0.01),
             async { panic!("should not request new address when initial balance  is > 0") },
             || async { Ok(Amount::from_btc(0.005)?) },
             || async {
@@ -759,7 +149,7 @@ mod tests {
         assert_eq!((amount, fees), (expected_amount, expected_fees));
         assert_eq!(
             writer.captured(),
-            " INFO swap: Received quote price=0.00100000 BTC minimum_amount=0.00000000 BTC maximum_amount=0.01000000 BTC\n"
+            " INFO swap::api::request: Received quote price=0.001 BTC minimum_amount=0 BTC maximum_amount=0.01 BTC\n"
         );
     }
 
@@ -773,7 +163,7 @@ mod tests {
 
         let (amount, fees) = determine_btc_to_swap(
             true,
-            async { Ok(quote_with_max(0.01)) },
+            quote_with_max(0.01),
             async { panic!("should not request new address when initial balance is > 0") },
             || async { Ok(Amount::from_btc(0.1001)?) },
             || async {
@@ -792,7 +182,7 @@ mod tests {
         assert_eq!((amount, fees), (expected_amount, expected_fees));
         assert_eq!(
             writer.captured(),
-            " INFO swap: Received quote price=0.00100000 BTC minimum_amount=0.00000000 BTC maximum_amount=0.01000000 BTC\n"
+            " INFO swap::api::request: Received quote price=0.001 BTC minimum_amount=0 BTC maximum_amount=0.01 BTC\n"
         );
     }
 
@@ -806,7 +196,7 @@ mod tests {
 
         let (amount, fees) = determine_btc_to_swap(
             true,
-            async { Ok(quote_with_min(0.01)) },
+            quote_with_min(0.01),
             get_dummy_address(),
             || async { Ok(Amount::from_btc(0.0101)?) },
             || async {
@@ -825,10 +215,10 @@ mod tests {
         assert_eq!((amount, fees), (expected_amount, expected_fees));
         assert_eq!(
             writer.captured(),
-            r" INFO swap: Received quote price=0.00100000 BTC minimum_amount=0.01000000 BTC maximum_amount=184467440737.09551615 BTC
+            r" INFO swap::api::request: Received quote price=0.001 BTC minimum_amount=0.01 BTC maximum_amount=184467440737.09551615 BTC
- INFO swap: Deposit at least 0.01001000 BTC to cover the min quantity with fee!
+ INFO swap::api::request: Deposit at least 0.01001 BTC to cover the min quantity with fee!
- INFO swap: Waiting for Bitcoin deposit deposit_address=1PdfytjS7C8wwd9Lq5o4x9aXA2YRqaCpH6 min_deposit=0.01001000 BTC max_giveable=0.00000000 BTC minimum_amount=0.01000000 BTC maximum_amount=184467440737.09551615 BTC
+ INFO swap::api::request: Waiting for Bitcoin deposit deposit_address=1PdfytjS7C8wwd9Lq5o4x9aXA2YRqaCpH6 min_deposit=0.01001 BTC max_giveable=0 BTC minimum_amount=0.01 BTC maximum_amount=184467440737.09551615 BTC
- INFO swap: Received Bitcoin new_balance=0.01010000 BTC max_giveable=0.01000000 BTC
+ INFO swap::api::request: Received Bitcoin new_balance=0.0101 BTC max_giveable=0.01 BTC
 "
         );
     }
@@ -843,7 +233,7 @@ mod tests {
 
         let (amount, fees) = determine_btc_to_swap(
             true,
-            async { Ok(quote_with_min(0.01)) },
+            quote_with_min(0.01),
             get_dummy_address(),
             || async { Ok(Amount::from_btc(0.0101)?) },
             || async {
@@ -862,10 +252,10 @@ mod tests {
         assert_eq!((amount, fees), (expected_amount, expected_fees));
         assert_eq!(
             writer.captured(),
-            r" INFO swap: Received quote price=0.00100000 BTC minimum_amount=0.01000000 BTC maximum_amount=184467440737.09551615 BTC
+            r" INFO swap::api::request: Received quote price=0.001 BTC minimum_amount=0.01 BTC maximum_amount=184467440737.09551615 BTC
- INFO swap: Deposit at least 0.00991000 BTC to cover the min quantity with fee!
+ INFO swap::api::request: Deposit at least 0.00991 BTC to cover the min quantity with fee!
- INFO swap: Waiting for Bitcoin deposit deposit_address=1PdfytjS7C8wwd9Lq5o4x9aXA2YRqaCpH6 min_deposit=0.00991000 BTC max_giveable=0.00010000 BTC minimum_amount=0.01000000 BTC maximum_amount=184467440737.09551615 BTC
+ INFO swap::api::request: Waiting for Bitcoin deposit deposit_address=1PdfytjS7C8wwd9Lq5o4x9aXA2YRqaCpH6 min_deposit=0.00991 BTC max_giveable=0.0001 BTC minimum_amount=0.01 BTC maximum_amount=184467440737.09551615 BTC
- INFO swap: Received Bitcoin new_balance=0.01010000 BTC max_giveable=0.01000000 BTC
+ INFO swap::api::request: Received Bitcoin new_balance=0.0101 BTC max_giveable=0.01 BTC
 "
         );
     }
@@ -885,7 +275,7 @@ mod tests {
             Duration::from_secs(1),
             determine_btc_to_swap(
                 true,
-                async { Ok(quote_with_min(0.1)) },
+                quote_with_min(0.1),
                 get_dummy_address(),
                 || async { Ok(Amount::from_btc(0.0101)?) },
                 || async {
@@ -902,13 +292,13 @@ mod tests {
         assert!(matches!(error, tokio::time::error::Elapsed { .. }));
         assert_eq!(
             writer.captured(),
-            r" INFO swap: Received quote price=0.00100000 BTC minimum_amount=0.10000000 BTC maximum_amount=184467440737.09551615 BTC
+            r" INFO swap::api::request: Received quote price=0.001 BTC minimum_amount=0.1 BTC maximum_amount=184467440737.09551615 BTC
- INFO swap: Deposit at least 0.10001000 BTC to cover the min quantity with fee!
+ INFO swap::api::request: Deposit at least 0.10001 BTC to cover the min quantity with fee!
- INFO swap: Waiting for Bitcoin deposit deposit_address=1PdfytjS7C8wwd9Lq5o4x9aXA2YRqaCpH6 min_deposit=0.10001000 BTC max_giveable=0.00000000 BTC minimum_amount=0.10000000 BTC maximum_amount=184467440737.09551615 BTC
+ INFO swap::api::request: Waiting for Bitcoin deposit deposit_address=1PdfytjS7C8wwd9Lq5o4x9aXA2YRqaCpH6 min_deposit=0.10001 BTC max_giveable=0 BTC minimum_amount=0.1 BTC maximum_amount=184467440737.09551615 BTC
- INFO swap: Received Bitcoin new_balance=0.01010000 BTC max_giveable=0.01000000 BTC
+ INFO swap::api::request: Received Bitcoin new_balance=0.0101 BTC max_giveable=0.01 BTC
- INFO swap: Deposited amount is less than `min_quantity`
+ INFO swap::api::request: Deposited amount is less than `min_quantity`
- INFO swap: Deposit at least 0.09001000 BTC to cover the min quantity with fee!
+ INFO swap::api::request: Deposit at least 0.09001 BTC to cover the min quantity with fee!
- INFO swap: Waiting for Bitcoin deposit deposit_address=1PdfytjS7C8wwd9Lq5o4x9aXA2YRqaCpH6 min_deposit=0.09001000 BTC max_giveable=0.01000000 BTC minimum_amount=0.10000000 BTC maximum_amount=184467440737.09551615 BTC
+ INFO swap::api::request: Waiting for Bitcoin deposit deposit_address=1PdfytjS7C8wwd9Lq5o4x9aXA2YRqaCpH6 min_deposit=0.09001 BTC max_giveable=0.01 BTC minimum_amount=0.1 BTC maximum_amount=184467440737.09551615 BTC
 "
         );
     }
@@ -933,7 +323,7 @@ mod tests {
             Duration::from_secs(10),
             determine_btc_to_swap(
                 true,
-                async { Ok(quote_with_min(0.1)) },
+                quote_with_min(0.1),
                 get_dummy_address(),
                 || async { Ok(Amount::from_btc(0.21)?) },
                 || async {
@@ -951,10 +341,10 @@ mod tests {
 
         assert_eq!(
             writer.captured(),
-            r" INFO swap: Received quote price=0.00100000 BTC minimum_amount=0.10000000 BTC maximum_amount=184467440737.09551615 BTC
+            r" INFO swap::api::request: Received quote price=0.001 BTC minimum_amount=0.1 BTC maximum_amount=184467440737.09551615 BTC
- INFO swap: Deposit at least 0.10001000 BTC to cover the min quantity with fee!
+ INFO swap::api::request: Deposit at least 0.10001 BTC to cover the min quantity with fee!
- INFO swap: Waiting for Bitcoin deposit deposit_address=1PdfytjS7C8wwd9Lq5o4x9aXA2YRqaCpH6 min_deposit=0.10001000 BTC max_giveable=0.00000000 BTC minimum_amount=0.10000000 BTC maximum_amount=184467440737.09551615 BTC
+ INFO swap::api::request: Waiting for Bitcoin deposit deposit_address=1PdfytjS7C8wwd9Lq5o4x9aXA2YRqaCpH6 min_deposit=0.10001 BTC max_giveable=0 BTC minimum_amount=0.1 BTC maximum_amount=184467440737.09551615 BTC
- INFO swap: Received Bitcoin new_balance=0.21000000 BTC max_giveable=0.20000000 BTC
+ INFO swap::api::request: Received Bitcoin new_balance=0.21 BTC max_giveable=0.2 BTC
 "
         );
     }
@@ -968,7 +358,7 @@ mod tests {
 
         let determination_error = determine_btc_to_swap(
             true,
-            async { Ok(quote_with_max(0.00)) },
+            quote_with_max(0.00),
             get_dummy_address(),
             || async { Ok(Amount::from_btc(0.0101)?) },
             || async {

swap/src/bitcoin.rs

@@ -15,7 +15,7 @@ pub use crate::bitcoin::refund::TxRefund;
 pub use crate::bitcoin::timelocks::{BlockHeight, ExpiredTimelocks};
 pub use ::bitcoin::util::amount::Amount;
 pub use ::bitcoin::util::psbt::PartiallySignedTransaction;
-pub use ::bitcoin::{Address, Network, Transaction, Txid};
+pub use ::bitcoin::{Address, AddressType, Network, Transaction, Txid};
 pub use ecdsa_fun::adaptor::EncryptedSignature;
 pub use ecdsa_fun::fun::Scalar;
 pub use ecdsa_fun::Signature;
@@ -244,10 +244,65 @@ pub fn current_epoch(
     }
 
     if tx_lock_status.is_confirmed_with(cancel_timelock) {
-        return ExpiredTimelocks::Cancel;
+        return ExpiredTimelocks::Cancel {
+            blocks_left: tx_cancel_status.blocks_left_until(punish_timelock),
+        };
     }
 
-    ExpiredTimelocks::None
+    ExpiredTimelocks::None {
+        blocks_left: tx_lock_status.blocks_left_until(cancel_timelock),
+    }
+}
+
+pub mod bitcoin_address {
+    use anyhow::{bail, Result};
+    use serde::Serialize;
+    use std::str::FromStr;
+
+    #[derive(thiserror::Error, Debug, Clone, Copy, PartialEq, Serialize)]
+    #[error("Invalid Bitcoin address provided, expected address on network {expected:?}  but address provided is on {actual:?}")]
+    pub struct BitcoinAddressNetworkMismatch {
+        #[serde(with = "crate::bitcoin::network")]
+        expected: bitcoin::Network,
+        #[serde(with = "crate::bitcoin::network")]
+        actual: bitcoin::Network,
+    }
+
+    pub fn parse(addr_str: &str) -> Result<bitcoin::Address> {
+        let address = bitcoin::Address::from_str(addr_str)?;
+
+        if address.address_type() != Some(bitcoin::AddressType::P2wpkh) {
+            anyhow::bail!("Invalid Bitcoin address provided, only bech32 format is supported!")
+        }
+
+        Ok(address)
+    }
+
+    pub fn validate(
+        address: bitcoin::Address,
+        expected_network: bitcoin::Network,
+    ) -> Result<bitcoin::Address> {
+        if address.network != expected_network {
+            bail!(BitcoinAddressNetworkMismatch {
+                expected: expected_network,
+                actual: address.network
+            });
+        }
+
+        Ok(address)
+    }
+
+    pub fn validate_is_testnet(
+        address: bitcoin::Address,
+        is_testnet: bool,
+    ) -> Result<bitcoin::Address> {
+        let expected_network = if is_testnet {
+            bitcoin::Network::Testnet
+        } else {
+            bitcoin::Network::Bitcoin
+        };
+        validate(address, expected_network)
+    }
 }
 
 /// Bitcoin error codes: https://github.com/bitcoin/bitcoin/blob/97d3500601c1d28642347d014a6de1e38f53ae4e/src/rpc/protocol.h#L23
@@ -324,6 +379,7 @@ mod tests {
     use crate::env::{GetConfig, Regtest};
     use crate::protocol::{alice, bob};
     use rand::rngs::OsRng;
+    use std::matches;
     use uuid::Uuid;
 
     #[test]
@@ -338,7 +394,7 @@ mod tests {
             tx_cancel_status,
         );
 
-        assert_eq!(expired_timelock, ExpiredTimelocks::None)
+        assert!(matches!(expired_timelock, ExpiredTimelocks::None { .. }));
     }
 
     #[test]
@@ -353,7 +409,7 @@ mod tests {
             tx_cancel_status,
         );
 
-        assert_eq!(expired_timelock, ExpiredTimelocks::Cancel)
+        assert!(matches!(expired_timelock, ExpiredTimelocks::Cancel { .. }));
     }
 
     #[test]

swap/src/bitcoin/cancel.rs

@@ -24,6 +24,12 @@ use std::ops::Add;
 #[serde(transparent)]
 pub struct CancelTimelock(u32);
 
+impl From<CancelTimelock> for u32 {
+    fn from(cancel_timelock: CancelTimelock) -> Self {
+        cancel_timelock.0
+    }
+}
+
 impl CancelTimelock {
     pub const fn new(number_of_blocks: u32) -> Self {
         Self(number_of_blocks)
@@ -64,6 +70,12 @@ impl fmt::Display for CancelTimelock {
 #[serde(transparent)]
 pub struct PunishTimelock(u32);
 
+impl From<PunishTimelock> for u32 {
+    fn from(punish_timelock: PunishTimelock) -> Self {
+        punish_timelock.0
+    }
+}
+
 impl PunishTimelock {
     pub const fn new(number_of_blocks: u32) -> Self {
         Self(number_of_blocks)

swap/src/bitcoin/lock.rs

@@ -4,9 +4,10 @@ use crate::bitcoin::{
 };
 use ::bitcoin::util::psbt::PartiallySignedTransaction;
 use ::bitcoin::{OutPoint, TxIn, TxOut, Txid};
-use anyhow::{bail, Result};
+use anyhow::{bail, Context, Result};
 use bdk::database::BatchDatabase;
 use bdk::miniscript::Descriptor;
+use bdk::psbt::PsbtUtils;
 use bitcoin::{PackedLockTime, Script, Sequence};
 use serde::{Deserialize, Serialize};
 
@@ -100,6 +101,15 @@ impl TxLock {
         Amount::from_sat(self.inner.clone().extract_tx().output[self.lock_output_vout()].value)
     }
 
+    pub fn fee(&self) -> Result<Amount> {
+        Ok(Amount::from_sat(
+            self.inner
+                .clone()
+                .fee_amount()
+                .context("The PSBT is missing a TxOut for an input")?,
+        ))
+    }
+
     pub fn txid(&self) -> Txid {
         self.inner.clone().extract_tx().txid()
     }

swap/src/bitcoin/timelocks.rs

@@ -37,9 +37,9 @@ impl Add<u32> for BlockHeight {
     }
 }
 
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+#[derive(Serialize, Debug, Clone, Copy, PartialEq, Eq)]
 pub enum ExpiredTimelocks {
-    None,
+    None { blocks_left: u32 },
-    Cancel,
+    Cancel { blocks_left: u32 },
     Punish,
 }

swap/src/bitcoin/wallet.rs

@@ -24,6 +24,7 @@ use std::path::Path;
 use std::sync::Arc;
 use std::time::{Duration, Instant};
 use tokio::sync::{watch, Mutex};
+use tracing::{debug_span, Instrument};
 
 const SLED_TREE_NAME: &str = "default_tree";
 
@@ -192,7 +193,7 @@ impl Wallet {
 
                         tokio::time::sleep(Duration::from_secs(5)).await;
                     }
-                });
+                }.instrument(debug_span!("BitcoinWalletSubscription")));
 
                 Subscription {
                     receiver,
@@ -274,7 +275,7 @@ impl Subscription {
 
     pub async fn wait_until_confirmed_with<T>(&self, target: T) -> Result<()>
     where
-        u32: PartialOrd<T>,
+        T: Into<u32>,
         T: Copy,
     {
         self.wait_until(|status| status.is_confirmed_with(target))
@@ -933,9 +934,20 @@ impl Confirmed {
 
     pub fn meets_target<T>(&self, target: T) -> bool
     where
-        u32: PartialOrd<T>,
+        T: Into<u32>,
     {
-        self.confirmations() >= target
+        self.confirmations() >= target.into()
+    }
+
+    pub fn blocks_left_until<T>(&self, target: T) -> u32
+    where
+        T: Into<u32> + Copy,
+    {
+        if self.meets_target(target) {
+            0
+        } else {
+            target.into() - self.confirmations()
+        }
     }
 }
 
@@ -948,7 +960,7 @@ impl ScriptStatus {
     /// Check if the script has met the given confirmation target.
     pub fn is_confirmed_with<T>(&self, target: T) -> bool
     where
-        u32: PartialOrd<T>,
+        T: Into<u32>,
     {
         match self {
             ScriptStatus::Confirmed(inner) => inner.meets_target(target),
@@ -956,6 +968,17 @@ impl ScriptStatus {
         }
     }
 
+    // Calculate the number of blocks left until the target is met.
+    pub fn blocks_left_until<T>(&self, target: T) -> u32
+    where
+        T: Into<u32> + Copy,
+    {
+        match self {
+            ScriptStatus::Confirmed(inner) => inner.blocks_left_until(target),
+            _ => target.into(),
+        }
+    }
+
     pub fn has_been_seen(&self) -> bool {
         matches!(self, ScriptStatus::InMempool | ScriptStatus::Confirmed(_))
     }
@@ -987,7 +1010,7 @@ mod tests {
     fn given_depth_0_should_meet_confirmation_target_one() {
         let script = ScriptStatus::Confirmed(Confirmed { depth: 0 });
 
-        let confirmed = script.is_confirmed_with(1);
+        let confirmed = script.is_confirmed_with(1_u32);
 
         assert!(confirmed)
     }
@@ -996,7 +1019,7 @@ mod tests {
     fn given_confirmations_1_should_meet_confirmation_target_one() {
         let script = ScriptStatus::from_confirmations(1);
 
-        let confirmed = script.is_confirmed_with(1);
+        let confirmed = script.is_confirmed_with(1_u32);
 
         assert!(confirmed)
     }
@@ -1011,6 +1034,33 @@ mod tests {
         assert_eq!(confirmed.depth, 0)
     }
 
+    #[test]
+    fn given_depth_0_should_return_0_blocks_left_until_1() {
+        let script = ScriptStatus::Confirmed(Confirmed { depth: 0 });
+
+        let blocks_left = script.blocks_left_until(1_u32);
+
+        assert_eq!(blocks_left, 0)
+    }
+
+    #[test]
+    fn given_depth_1_should_return_0_blocks_left_until_1() {
+        let script = ScriptStatus::Confirmed(Confirmed { depth: 1 });
+
+        let blocks_left = script.blocks_left_until(1_u32);
+
+        assert_eq!(blocks_left, 0)
+    }
+
+    #[test]
+    fn given_depth_0_should_return_1_blocks_left_until_2() {
+        let script = ScriptStatus::Confirmed(Confirmed { depth: 0 });
+
+        let blocks_left = script.blocks_left_until(2_u32);
+
+        assert_eq!(blocks_left, 1)
+    }
+
     #[test]
     fn given_one_BTC_and_100k_sats_per_vb_fees_should_not_hit_max() {
         // 400 weight = 100 vbyte

swap/src/cli/cancel_and_refund.rs

@@ -10,7 +10,7 @@ use uuid::Uuid;
 pub async fn cancel_and_refund(
     swap_id: Uuid,
     bitcoin_wallet: Arc<Wallet>,
-    db: Arc<dyn Database>,
+    db: Arc<dyn Database + Send + Sync>,
 ) -> Result<BobState> {
     if let Err(err) = cancel(swap_id, bitcoin_wallet.clone(), db.clone()).await {
         tracing::info!(%err, "Could not submit cancel transaction");
@@ -28,7 +28,7 @@ pub async fn cancel_and_refund(
 pub async fn cancel(
     swap_id: Uuid,
     bitcoin_wallet: Arc<Wallet>,
-    db: Arc<dyn Database>,
+    db: Arc<dyn Database + Send + Sync>,
 ) -> Result<(Txid, Subscription, BobState)> {
     let state = db.get_state(swap_id).await?.try_into()?;
 
@@ -80,7 +80,7 @@ pub async fn cancel(
 pub async fn refund(
     swap_id: Uuid,
     bitcoin_wallet: Arc<Wallet>,
-    db: Arc<dyn Database>,
+    db: Arc<dyn Database + Send + Sync>,
 ) -> Result<BobState> {
     let state = db.get_state(swap_id).await?.try_into()?;
 

swap/src/cli/event_loop.rs

@@ -151,17 +151,17 @@ impl EventLoop {
                             return;
                         }
                         SwarmEvent::Behaviour(OutEvent::Failure { peer, error }) => {
-                            tracing::warn!(%peer, "Communication error: {:#}", error);
+                            tracing::warn!(%peer, err = %error, "Communication error");
                             return;
                         }
                         SwarmEvent::ConnectionEstablished { peer_id, endpoint, .. } if peer_id == self.alice_peer_id => {
-                            tracing::info!("Connected to Alice at {}", endpoint.get_remote_address());
+                            tracing::info!(peer_id = %endpoint.get_remote_address(), "Connected to Alice");
                         }
                         SwarmEvent::Dialing(peer_id) if peer_id == self.alice_peer_id => {
-                            tracing::debug!("Dialling Alice at {}", peer_id);
+                            tracing::debug!(%peer_id, "Dialling Alice");
                         }
                         SwarmEvent::ConnectionClosed { peer_id, endpoint, num_established, cause: Some(error) } if peer_id == self.alice_peer_id && num_established == 0 => {
-                            tracing::warn!("Lost connection to Alice at {}, cause: {}", endpoint.get_remote_address(), error);
+                            tracing::warn!(peer_id = %endpoint.get_remote_address(), cause = %error, "Lost connection to Alice");
                         }
                         SwarmEvent::ConnectionClosed { peer_id, num_established, cause: None, .. } if peer_id == self.alice_peer_id && num_established == 0 => {
                             // no error means the disconnection was requested
@@ -169,10 +169,10 @@ impl EventLoop {
                             return;
                         }
                         SwarmEvent::OutgoingConnectionError { peer_id,  error } if matches!(peer_id, Some(alice_peer_id) if alice_peer_id == self.alice_peer_id) => {
-                            tracing::warn!( "Failed to dial Alice: {}", error);
+                            tracing::warn!(%error, "Failed to dial Alice");
 
                             if let Some(duration) = self.swarm.behaviour_mut().redial.until_next_redial() {
-                                tracing::info!("Next redial attempt in {}s", duration.as_secs());
+                                tracing::info!(seconds_until_next_redial = %duration.as_secs(), "Waiting for next redial attempt");
                             }
 
                         }
@@ -241,6 +241,7 @@ impl EventLoopHandle {
     }
 
     pub async fn request_quote(&mut self) -> Result<BidQuote> {
+        tracing::debug!("Requesting quote");
         Ok(self.quote.send_receive(()).await?)
     }
 

swap/src/cli/tracing.rs

@@ -1,5 +1,4 @@
 use anyhow::Result;
-use std::option::Option::Some;
 use std::path::Path;
 use time::format_description::well_known::Rfc3339;
 use tracing::subscriber::set_global_default;
@@ -7,20 +6,14 @@ use tracing::{Event, Level, Subscriber};
 use tracing_subscriber::fmt::format::{DefaultFields, Format, JsonFields};
 use tracing_subscriber::fmt::time::UtcTime;
 use tracing_subscriber::layer::{Context, SubscriberExt};
-use tracing_subscriber::{fmt, EnvFilter, FmtSubscriber, Layer, Registry};
+use tracing_subscriber::{fmt, EnvFilter, Layer, Registry};
-use uuid::Uuid;
 
-pub fn init(debug: bool, json: bool, dir: impl AsRef<Path>, swap_id: Option<Uuid>) -> Result<()> {
+pub fn init(debug: bool, json: bool, dir: impl AsRef<Path>) -> Result<()> {
-    if let Some(swap_id) = swap_id {
     let level_filter = EnvFilter::try_new("swap=debug")?;
-
     let registry = Registry::default().with(level_filter);
 
-        let appender =
+    let appender = tracing_appender::rolling::never(dir.as_ref(), "swap-all.log");
-            tracing_appender::rolling::never(dir.as_ref(), format!("swap-{}.log", swap_id));
+    let (appender, _guard) = tracing_appender::non_blocking(appender);
-        let (appender, guard) = tracing_appender::non_blocking(appender);
-
-        std::mem::forget(guard);
 
     let file_logger = registry.with(
         fmt::layer()
@@ -39,23 +32,6 @@ pub fn init(debug: bool, json: bool, dir: impl AsRef<Path>, swap_id: Option<Uuid
     } else {
         set_global_default(file_logger.with(info_terminal_printer()))?;
     }
-    } else {
-        let level = if debug { Level::DEBUG } else { Level::INFO };
-        let is_terminal = atty::is(atty::Stream::Stderr);
-
-        let builder = FmtSubscriber::builder()
-            .with_env_filter(format!("swap={}", level))
-            .with_writer(std::io::stderr)
-            .with_ansi(is_terminal)
-            .with_timer(UtcTime::rfc_3339())
-            .with_target(false);
-
-        if json {
-            builder.json().init();
-        } else {
-            builder.init();
-        }
-    };
 
     tracing::info!("Logging initialized to {}", dir.as_ref().display());
     Ok(())
@@ -66,19 +42,11 @@ pub struct StdErrPrinter<L> {
     level: Level,
 }
 
-type StdErrLayer<S, T> = tracing_subscriber::fmt::Layer<
+type StdErrLayer<S, T> =
-    S,
+    fmt::Layer<S, DefaultFields, Format<fmt::format::Full, T>, fn() -> std::io::Stderr>;
-    DefaultFields,
-    Format<tracing_subscriber::fmt::format::Full, T>,
-    fn() -> std::io::Stderr,
->;
 
-type StdErrJsonLayer<S, T> = tracing_subscriber::fmt::Layer<
+type StdErrJsonLayer<S, T> =
-    S,
+    fmt::Layer<S, JsonFields, Format<fmt::format::Json, T>, fn() -> std::io::Stderr>;
-    JsonFields,
-    Format<tracing_subscriber::fmt::format::Json, T>,
-    fn() -> std::io::Stderr,
->;
 
 fn debug_terminal_printer<S>() -> StdErrPrinter<StdErrLayer<S, UtcTime<Rfc3339>>> {
     let is_terminal = atty::is(atty::Stream::Stderr);

swap/src/database/sqlite.rs

@@ -1,11 +1,12 @@
 use crate::database::Swap;
 use crate::monero::Address;
 use crate::protocol::{Database, State};
-use anyhow::{Context, Result};
+use anyhow::{anyhow, Context, Result};
 use async_trait::async_trait;
 use libp2p::{Multiaddr, PeerId};
 use sqlx::sqlite::Sqlite;
 use sqlx::{Pool, SqlitePool};
+use std::collections::HashMap;
 use std::path::Path;
 use std::str::FromStr;
 use time::OffsetDateTime;
@@ -149,7 +150,7 @@ impl Database for SqliteDatabase {
 
         let rows = sqlx::query!(
             r#"
-        SELECT address
+        SELECT DISTINCT address
         FROM peer_addresses
         WHERE peer_id = ?
         "#,
@@ -169,6 +170,25 @@ impl Database for SqliteDatabase {
         addresses
     }
 
+    async fn get_swap_start_date(&self, swap_id: Uuid) -> Result<String> {
+        let mut conn = self.pool.acquire().await?;
+        let swap_id = swap_id.to_string();
+
+        let row = sqlx::query!(
+            r#"
+                SELECT min(entered_at) as start_date
+                FROM swap_states
+                WHERE swap_id = ?
+                "#,
+            swap_id
+        )
+        .fetch_one(&mut conn)
+        .await?;
+
+        row.start_date
+            .ok_or_else(|| anyhow!("Could not get swap start date"))
+    }
+
     async fn insert_latest_state(&self, swap_id: Uuid, state: State) -> Result<()> {
         let mut conn = self.pool.acquire().await?;
         let entered_at = OffsetDateTime::now_utc();
@@ -249,6 +269,69 @@ impl Database for SqliteDatabase {
 
         result
     }
+
+    async fn get_states(&self, swap_id: Uuid) -> Result<Vec<State>> {
+        let mut conn = self.pool.acquire().await?;
+        let swap_id = swap_id.to_string();
+
+        // TODO: We should use query! instead of query here to allow for at-compile-time validation
+        // I didn't manage to generate the mappings for the query! macro because of problems with sqlx-cli
+        let rows = sqlx::query!(
+            r#"
+           SELECT state
+           FROM swap_states
+           WHERE swap_id = ?
+        "#,
+            swap_id
+        )
+        .fetch_all(&mut conn)
+        .await?;
+
+        let result = rows
+            .iter()
+            .map(|row| {
+                let state_str: &str = &row.state;
+
+                let state = match serde_json::from_str::<Swap>(state_str) {
+                    Ok(a) => Ok(State::from(a)),
+                    Err(e) => Err(e),
+                }?;
+                Ok(state)
+            })
+            .collect::<Result<Vec<State>>>();
+
+        result
+    }
+
+    async fn raw_all(&self) -> Result<HashMap<Uuid, Vec<serde_json::Value>>> {
+        let mut conn = self.pool.acquire().await?;
+        let rows = sqlx::query!(
+            r#"
+                SELECT swap_id, state
+                FROM swap_states
+                "#
+        )
+        .fetch_all(&mut conn)
+        .await?;
+
+        let mut swaps: HashMap<Uuid, Vec<serde_json::Value>> = HashMap::new();
+
+        for row in &rows {
+            let swap_id = Uuid::from_str(&row.swap_id)?;
+            let state = serde_json::from_str(&row.state)?;
+
+            if let std::collections::hash_map::Entry::Vacant(e) = swaps.entry(swap_id) {
+                e.insert(vec![state]);
+            } else {
+                swaps
+                    .get_mut(&swap_id)
+                    .ok_or_else(|| anyhow!("Error while retrieving the swap"))?
+                    .push(state);
+            }
+        }
+
+        Ok(swaps)
+    }
 }
 
 #[cfg(test)]

swap/src/lib.rs

@@ -16,6 +16,7 @@
     missing_copy_implementations
 )]
 
+pub mod api;
 pub mod asb;
 pub mod bitcoin;
 pub mod cli;
@@ -28,6 +29,7 @@ pub mod libp2p_ext;
 pub mod monero;
 pub mod network;
 pub mod protocol;
+pub mod rpc;
 pub mod seed;
 pub mod tor;
 pub mod tracing_ext;

swap/src/monero.rs

@@ -42,6 +42,13 @@ pub fn private_key_from_secp256k1_scalar(scalar: bitcoin::Scalar) -> PrivateKey
 #[derive(Clone, Copy, Debug, Serialize, Deserialize, PartialEq, Eq)]
 pub struct PrivateViewKey(#[serde(with = "monero_private_key")] PrivateKey);
 
+impl fmt::Display for PrivateViewKey {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        // Delegate to the Display implementation of PrivateKey
+        write!(f, "{}", self.0)
+    }
+}
+
 impl PrivateViewKey {
     pub fn new_random<R: RngCore + CryptoRng>(rng: &mut R) -> Self {
         let scalar = Scalar::random(rng);
@@ -320,6 +327,52 @@ pub mod monero_amount {
     }
 }
 
+pub mod monero_address {
+    use anyhow::{bail, Context, Result};
+    use std::str::FromStr;
+
+    #[derive(thiserror::Error, Debug, Clone, Copy, PartialEq)]
+    #[error("Invalid monero address provided, expected address on network {expected:?} but address provided is on {actual:?}")]
+    pub struct MoneroAddressNetworkMismatch {
+        pub expected: monero::Network,
+        pub actual: monero::Network,
+    }
+
+    pub fn parse(s: &str) -> Result<monero::Address> {
+        monero::Address::from_str(s).with_context(|| {
+            format!(
+                "Failed to parse {} as a monero address, please make sure it is a valid address",
+                s
+            )
+        })
+    }
+
+    pub fn validate(
+        address: monero::Address,
+        expected_network: monero::Network,
+    ) -> Result<monero::Address> {
+        if address.network != expected_network {
+            bail!(MoneroAddressNetworkMismatch {
+                expected: expected_network,
+                actual: address.network,
+            });
+        }
+        Ok(address)
+    }
+
+    pub fn validate_is_testnet(
+        address: monero::Address,
+        is_testnet: bool,
+    ) -> Result<monero::Address> {
+        let expected_network = if is_testnet {
+            monero::Network::Stagenet
+        } else {
+            monero::Network::Mainnet
+        };
+        validate(address, expected_network)
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;

swap/src/protocol.rs

@@ -11,6 +11,7 @@ use serde::{Deserialize, Serialize};
 use sha2::Sha256;
 use sigma_fun::ext::dl_secp256k1_ed25519_eq::{CrossCurveDLEQ, CrossCurveDLEQProof};
 use sigma_fun::HashTranscript;
+use std::collections::HashMap;
 use std::convert::TryInto;
 use uuid::Uuid;
 
@@ -139,7 +140,10 @@ pub trait Database {
     async fn get_monero_address(&self, swap_id: Uuid) -> Result<monero::Address>;
     async fn insert_address(&self, peer_id: PeerId, address: Multiaddr) -> Result<()>;
     async fn get_addresses(&self, peer_id: PeerId) -> Result<Vec<Multiaddr>>;
+    async fn get_swap_start_date(&self, swap_id: Uuid) -> Result<String>;
     async fn insert_latest_state(&self, swap_id: Uuid, state: State) -> Result<()>;
     async fn get_state(&self, swap_id: Uuid) -> Result<State>;
+    async fn get_states(&self, swap_id: Uuid) -> Result<Vec<State>>;
     async fn all(&self) -> Result<Vec<(Uuid, State)>>;
+    async fn raw_all(&self) -> Result<HashMap<Uuid, Vec<serde_json::Value>>>;
 }

swap/src/protocol/alice/swap.rs

@@ -112,7 +112,7 @@ where
         }
         AliceState::BtcLocked { state3 } => {
             match state3.expired_timelocks(bitcoin_wallet).await? {
-                ExpiredTimelocks::None => {
+                ExpiredTimelocks::None { .. } => {
                     // Record the current monero wallet block height so we don't have to scan from
                     // block 0 for scenarios where we create a refund wallet.
                     let monero_wallet_restore_blockheight = monero_wallet.block_height().await?;
@@ -135,7 +135,7 @@ where
             transfer_proof,
             state3,
         } => match state3.expired_timelocks(bitcoin_wallet).await? {
-            ExpiredTimelocks::None => {
+            ExpiredTimelocks::None { .. } => {
                 monero_wallet
                     .watch_for_transfer(state3.lock_xmr_watch_request(transfer_proof.clone(), 1))
                     .await
@@ -221,7 +221,7 @@ where
             encrypted_signature,
             state3,
         } => match state3.expired_timelocks(bitcoin_wallet).await? {
-            ExpiredTimelocks::None => {
+            ExpiredTimelocks::None { .. } => {
                 let tx_lock_status = bitcoin_wallet.subscribe_to(state3.tx_lock.clone()).await;
                 match state3.signed_redeem_transaction(*encrypted_signature) {
                     Ok(tx) => match bitcoin_wallet.broadcast(tx, "redeem").await {

swap/src/protocol/bob/state.rs

@@ -21,9 +21,10 @@ use sigma_fun::ext::dl_secp256k1_ed25519_eq::CrossCurveDLEQProof;
 use std::fmt;
 use uuid::Uuid;
 
-#[derive(Debug, Clone, PartialEq)]
+#[derive(Debug, Clone, PartialEq, Serialize)]
 pub enum BobState {
     Started {
+        #[serde(with = "::bitcoin::util::amount::serde::as_sat")]
         btc_amount: bitcoin::Amount,
         change_address: bitcoin::Address,
     },
@@ -287,13 +288,13 @@ pub struct State2 {
     S_a_monero: monero::PublicKey,
     S_a_bitcoin: bitcoin::PublicKey,
     v: monero::PrivateViewKey,
-    xmr: monero::Amount,
+    pub xmr: monero::Amount,
-    cancel_timelock: CancelTimelock,
+    pub cancel_timelock: CancelTimelock,
-    punish_timelock: PunishTimelock,
+    pub punish_timelock: PunishTimelock,
-    refund_address: bitcoin::Address,
+    pub refund_address: bitcoin::Address,
     redeem_address: bitcoin::Address,
     punish_address: bitcoin::Address,
-    tx_lock: bitcoin::TxLock,
+    pub tx_lock: bitcoin::TxLock,
     tx_cancel_sig_a: Signature,
     tx_refund_encsig: bitcoin::EncryptedSignature,
     min_monero_confirmations: u64,
@@ -302,9 +303,9 @@ pub struct State2 {
     #[serde(with = "::bitcoin::util::amount::serde::as_sat")]
     tx_punish_fee: bitcoin::Amount,
     #[serde(with = "::bitcoin::util::amount::serde::as_sat")]
-    tx_refund_fee: bitcoin::Amount,
+    pub tx_refund_fee: bitcoin::Amount,
     #[serde(with = "::bitcoin::util::amount::serde::as_sat")]
-    tx_cancel_fee: bitcoin::Amount,
+    pub tx_cancel_fee: bitcoin::Amount,
 }
 
 impl State2 {
@@ -439,7 +440,7 @@ impl State3 {
         self.tx_lock.txid()
     }
 
-    pub async fn current_epoch(
+    pub async fn expired_timelock(
         &self,
         bitcoin_wallet: &bitcoin::Wallet,
     ) -> Result<ExpiredTimelocks> {

swap/src/protocol/bob/swap.rs

@@ -117,7 +117,7 @@ async fn next_state(
         } => {
             let tx_lock_status = bitcoin_wallet.subscribe_to(state3.tx_lock.clone()).await;
 
-            if let ExpiredTimelocks::None = state3.current_epoch(bitcoin_wallet).await? {
+            if let ExpiredTimelocks::None { .. } = state3.expired_timelock(bitcoin_wallet).await? {
                 let transfer_proof_watcher = event_loop_handle.recv_transfer_proof();
                 let cancel_timelock_expires =
                     tx_lock_status.wait_until_confirmed_with(state3.cancel_timelock);
@@ -156,7 +156,7 @@ async fn next_state(
         } => {
             let tx_lock_status = bitcoin_wallet.subscribe_to(state.tx_lock.clone()).await;
 
-            if let ExpiredTimelocks::None = state.current_epoch(bitcoin_wallet).await? {
+            if let ExpiredTimelocks::None { .. } = state.expired_timelock(bitcoin_wallet).await? {
                 let watch_request = state.lock_xmr_watch_request(lock_transfer_proof);
 
                 select! {
@@ -185,7 +185,7 @@ async fn next_state(
         BobState::XmrLocked(state) => {
             let tx_lock_status = bitcoin_wallet.subscribe_to(state.tx_lock.clone()).await;
 
-            if let ExpiredTimelocks::None = state.expired_timelock(bitcoin_wallet).await? {
+            if let ExpiredTimelocks::None { .. } = state.expired_timelock(bitcoin_wallet).await? {
                 // Alice has locked Xmr
                 // Bob sends Alice his key
 
@@ -209,7 +209,7 @@ async fn next_state(
         BobState::EncSigSent(state) => {
             let tx_lock_status = bitcoin_wallet.subscribe_to(state.tx_lock.clone()).await;
 
-            if let ExpiredTimelocks::None = state.expired_timelock(bitcoin_wallet).await? {
+            if let ExpiredTimelocks::None { .. } = state.expired_timelock(bitcoin_wallet).await? {
                 select! {
                     state5 = state.watch_for_redeem_btc(bitcoin_wallet) => {
                         BobState::BtcRedeemed(state5?)
@@ -269,12 +269,12 @@ async fn next_state(
         BobState::BtcCancelled(state) => {
             // Bob has cancelled the swap
             match state.expired_timelock(bitcoin_wallet).await? {
-                ExpiredTimelocks::None => {
+                ExpiredTimelocks::None { .. } => {
                     bail!(
                         "Internal error: canceled state reached before cancel timelock was expired"
                     );
                 }
-                ExpiredTimelocks::Cancel => {
+                ExpiredTimelocks::Cancel { .. } => {
                     state.publish_refund_btc(bitcoin_wallet).await?;
                     BobState::BtcRefunded(state)
                 }

swap/src/rpc.rs

@@ -0,0 +1,31 @@
+use crate::api::Context;
+use jsonrpsee::server::{RpcModule, ServerBuilder, ServerHandle};
+use std::net::SocketAddr;
+use std::sync::Arc;
+use thiserror::Error;
+
+pub mod methods;
+
+#[derive(Debug, Error)]
+pub enum Error {
+    #[error("Could not parse key value from params")]
+    ParseError,
+}
+
+pub async fn run_server(
+    server_address: SocketAddr,
+    context: Arc<Context>,
+) -> anyhow::Result<(SocketAddr, ServerHandle)> {
+    let server = ServerBuilder::default().build(server_address).await?;
+    let mut modules = RpcModule::new(());
+    {
+        modules
+            .merge(methods::register_modules(Arc::clone(&context))?)
+            .expect("Could not register RPC modules")
+    }
+
+    let addr = server.local_addr()?;
+    let server_handle = server.start(modules)?;
+
+    Ok((addr, server_handle))
+}

swap/src/rpc/methods.rs

@@ -0,0 +1,236 @@
+use crate::api::request::{Method, Request};
+use crate::api::Context;
+use crate::bitcoin::bitcoin_address;
+use crate::monero::monero_address;
+use crate::{bitcoin, monero};
+use anyhow::Result;
+use jsonrpsee::server::RpcModule;
+use jsonrpsee::types::Params;
+use libp2p::core::Multiaddr;
+use std::collections::HashMap;
+use std::str::FromStr;
+use std::sync::Arc;
+use uuid::Uuid;
+
+pub fn register_modules(context: Arc<Context>) -> Result<RpcModule<Arc<Context>>> {
+    let mut module = RpcModule::new(context);
+
+    module.register_async_method("suspend_current_swap", |params, context| async move {
+        execute_request(params, Method::SuspendCurrentSwap, &context).await
+    })?;
+
+    module.register_async_method("get_swap_info", |params_raw, context| async move {
+        let params: HashMap<String, serde_json::Value> = params_raw.parse()?;
+
+        let swap_id = params
+            .get("swap_id")
+            .ok_or_else(|| jsonrpsee_core::Error::Custom("Does not contain swap_id".to_string()))?;
+
+        let swap_id = as_uuid(swap_id)
+            .ok_or_else(|| jsonrpsee_core::Error::Custom("Could not parse swap_id".to_string()))?;
+
+        execute_request(params_raw, Method::GetSwapInfo { swap_id }, &context).await
+    })?;
+
+    module.register_async_method("get_bitcoin_balance", |params_raw, context| async move {
+        let params: HashMap<String, serde_json::Value> = params_raw.parse()?;
+
+        let force_refresh = params
+            .get("force_refresh")
+            .ok_or_else(|| {
+                jsonrpsee_core::Error::Custom("Does not contain force_refresh".to_string())
+            })?
+            .as_bool()
+            .ok_or_else(|| {
+                jsonrpsee_core::Error::Custom("force_refesh is not a boolean".to_string())
+            })?;
+
+        execute_request(params_raw, Method::Balance { force_refresh }, &context).await
+    })?;
+
+    module.register_async_method("get_history", |params, context| async move {
+        execute_request(params, Method::History, &context).await
+    })?;
+
+    module.register_async_method("get_raw_states", |params, context| async move {
+        execute_request(params, Method::GetRawStates, &context).await
+    })?;
+
+    module.register_async_method("resume_swap", |params_raw, context| async move {
+        let params: HashMap<String, serde_json::Value> = params_raw.parse()?;
+
+        let swap_id = params
+            .get("swap_id")
+            .ok_or_else(|| jsonrpsee_core::Error::Custom("Does not contain swap_id".to_string()))?;
+
+        let swap_id = as_uuid(swap_id)
+            .ok_or_else(|| jsonrpsee_core::Error::Custom("Could not parse swap_id".to_string()))?;
+
+        execute_request(params_raw, Method::Resume { swap_id }, &context).await
+    })?;
+
+    module.register_async_method("cancel_refund_swap", |params_raw, context| async move {
+        let params: HashMap<String, serde_json::Value> = params_raw.parse()?;
+
+        let swap_id = params
+            .get("swap_id")
+            .ok_or_else(|| jsonrpsee_core::Error::Custom("Does not contain swap_id".to_string()))?;
+
+        let swap_id = as_uuid(swap_id)
+            .ok_or_else(|| jsonrpsee_core::Error::Custom("Could not parse swap_id".to_string()))?;
+
+        execute_request(params_raw, Method::CancelAndRefund { swap_id }, &context).await
+    })?;
+
+    module.register_async_method(
+        "get_monero_recovery_info",
+        |params_raw, context| async move {
+            let params: HashMap<String, serde_json::Value> = params_raw.parse()?;
+
+            let swap_id = params.get("swap_id").ok_or_else(|| {
+                jsonrpsee_core::Error::Custom("Does not contain swap_id".to_string())
+            })?;
+
+            let swap_id = as_uuid(swap_id).ok_or_else(|| {
+                jsonrpsee_core::Error::Custom("Could not parse swap_id".to_string())
+            })?;
+
+            execute_request(params_raw, Method::MoneroRecovery { swap_id }, &context).await
+        },
+    )?;
+
+    module.register_async_method("withdraw_btc", |params_raw, context| async move {
+        let params: HashMap<String, String> = params_raw.parse()?;
+
+        let amount = if let Some(amount_str) = params.get("amount") {
+            Some(
+                ::bitcoin::Amount::from_str_in(amount_str, ::bitcoin::Denomination::Bitcoin)
+                    .map_err(|_| {
+                        jsonrpsee_core::Error::Custom("Unable to parse amount".to_string())
+                    })?,
+            )
+        } else {
+            None
+        };
+
+        let withdraw_address =
+            bitcoin::Address::from_str(params.get("address").ok_or_else(|| {
+                jsonrpsee_core::Error::Custom("Does not contain address".to_string())
+            })?)
+            .map_err(|err| jsonrpsee_core::Error::Custom(err.to_string()))?;
+        let withdraw_address =
+            bitcoin_address::validate(withdraw_address, context.config.env_config.bitcoin_network)?;
+
+        execute_request(
+            params_raw,
+            Method::WithdrawBtc {
+                amount,
+                address: withdraw_address,
+            },
+            &context,
+        )
+        .await
+    })?;
+
+    module.register_async_method("buy_xmr", |params_raw, context| async move {
+        let params: HashMap<String, String> = params_raw.parse()?;
+
+        let bitcoin_change_address =
+            bitcoin::Address::from_str(params.get("bitcoin_change_address").ok_or_else(|| {
+                jsonrpsee_core::Error::Custom("Does not contain bitcoin_change_address".to_string())
+            })?)
+            .map_err(|err| jsonrpsee_core::Error::Custom(err.to_string()))?;
+
+        let bitcoin_change_address = bitcoin_address::validate(
+            bitcoin_change_address,
+            context.config.env_config.bitcoin_network,
+        )?;
+
+        let monero_receive_address =
+            monero::Address::from_str(params.get("monero_receive_address").ok_or_else(|| {
+                jsonrpsee_core::Error::Custom("Does not contain monero_receiveaddress".to_string())
+            })?)
+            .map_err(|err| jsonrpsee_core::Error::Custom(err.to_string()))?;
+
+        let monero_receive_address = monero_address::validate(
+            monero_receive_address,
+            context.config.env_config.monero_network,
+        )?;
+
+        let seller =
+            Multiaddr::from_str(params.get("seller").ok_or_else(|| {
+                jsonrpsee_core::Error::Custom("Does not contain seller".to_string())
+            })?)
+            .map_err(|err| jsonrpsee_core::Error::Custom(err.to_string()))?;
+
+        execute_request(
+            params_raw,
+            Method::BuyXmr {
+                bitcoin_change_address,
+                monero_receive_address,
+                seller,
+                swap_id: Uuid::new_v4(),
+            },
+            &context,
+        )
+        .await
+    })?;
+
+    module.register_async_method("list_sellers", |params_raw, context| async move {
+        let params: HashMap<String, serde_json::Value> = params_raw.parse()?;
+
+        let rendezvous_point = params.get("rendezvous_point").ok_or_else(|| {
+            jsonrpsee_core::Error::Custom("Does not contain rendezvous_point".to_string())
+        })?;
+
+        let rendezvous_point = rendezvous_point
+            .as_str()
+            .and_then(|addr_str| Multiaddr::from_str(addr_str).ok())
+            .ok_or_else(|| {
+                jsonrpsee_core::Error::Custom("Could not parse valid multiaddr".to_string())
+            })?;
+
+        execute_request(
+            params_raw,
+            Method::ListSellers {
+                rendezvous_point: rendezvous_point.clone(),
+            },
+            &context,
+        )
+        .await
+    })?;
+
+    module.register_async_method("get_current_swap", |params, context| async move {
+        execute_request(params, Method::GetCurrentSwap, &context).await
+    })?;
+
+    Ok(module)
+}
+
+fn as_uuid(json_value: &serde_json::Value) -> Option<Uuid> {
+    if let Some(uuid_str) = json_value.as_str() {
+        Uuid::parse_str(uuid_str).ok()
+    } else {
+        None
+    }
+}
+
+async fn execute_request(
+    params: Params<'static>,
+    cmd: Method,
+    context: &Arc<Context>,
+) -> Result<serde_json::Value, jsonrpsee_core::Error> {
+    // If we fail to parse the params as a String HashMap, it's most likely because its an empty object
+    // In that case, we want to make sure not to fail the request, so we set the log_reference_id to None
+    // and swallow the error
+    let reference_id = params
+        .parse::<HashMap<String, serde_json::Value>>()
+        .ok()
+        .and_then(|params_parsed| params_parsed.get("log_reference_id").cloned());
+
+    let request = Request::with_id(cmd, reference_id.map(|log_ref| log_ref.to_string()));
+    request
+        .call(Arc::clone(context))
+        .await
+        .map_err(|err| jsonrpsee_core::Error::Custom(format!("{:#}", err)))
+}

swap/src/seed.rs

@@ -16,7 +16,7 @@ use torut::onion::TorSecretKeyV3;
 
 pub const SEED_LENGTH: usize = 32;
 
-#[derive(Eq, PartialEq)]
+#[derive(Clone, Eq, PartialEq)]
 pub struct Seed([u8; SEED_LENGTH]);
 
 impl Seed {

swap/tests/harness/mod.rs

@@ -23,9 +23,9 @@ use swap::network::rendezvous::XmrBtcNamespace;
 use swap::network::swarm;
 use swap::protocol::alice::{AliceState, Swap};
 use swap::protocol::bob::BobState;
-use swap::protocol::{alice, bob};
+use swap::protocol::{alice, bob, Database};
 use swap::seed::Seed;
-use swap::{asb, bitcoin, cli, env, monero};
+use swap::{api, asb, bitcoin, cli, env, monero};
 use tempfile::{tempdir, NamedTempFile};
 use testcontainers::clients::Cli;
 use testcontainers::{Container, RunnableImage};
@@ -400,7 +400,7 @@ impl StartingBalances {
     }
 }
 
-struct BobParams {
+pub struct BobParams {
     seed: Seed,
     db_path: PathBuf,
     bitcoin_wallet: Arc<bitcoin::Wallet>,
@@ -411,6 +411,21 @@ struct BobParams {
 }
 
 impl BobParams {
+    pub fn get_concentenated_alice_address(&self) -> String {
+        format!(
+            "{}/p2p/{}",
+            self.alice_address.clone(),
+            self.alice_peer_id.clone().to_base58()
+        )
+    }
+
+    pub async fn get_change_receive_addresses(&self) -> (bitcoin::Address, monero::Address) {
+        (
+            self.bitcoin_wallet.new_address().await.unwrap(),
+            self.monero_wallet.get_main_address(),
+        )
+    }
+
     pub async fn new_swap_from_db(&self, swap_id: Uuid) -> Result<(bob::Swap, cli::EventLoop)> {
         let (event_loop, handle) = self.new_eventloop(swap_id).await?;
 
@@ -452,6 +467,8 @@ impl BobParams {
         }
         let db = Arc::new(SqliteDatabase::open(&self.db_path).await?);
 
+        db.insert_peer_id(swap_id, self.alice_peer_id).await?;
+
         let swap = bob::Swap::new(
             db,
             swap_id,
@@ -525,13 +542,24 @@ pub struct TestContext {
     alice_swap_handle: mpsc::Receiver<Swap>,
     alice_handle: AliceApplicationHandle,
 
-    bob_params: BobParams,
+    pub bob_params: BobParams,
     bob_starting_balances: StartingBalances,
     bob_bitcoin_wallet: Arc<bitcoin::Wallet>,
     bob_monero_wallet: Arc<monero::Wallet>,
 }
 
 impl TestContext {
+    pub async fn get_bob_context(self) -> api::Context {
+        api::Context::for_harness(
+            self.bob_params.seed,
+            self.env_config,
+            self.bob_params.db_path,
+            self.bob_bitcoin_wallet,
+            self.bob_monero_wallet,
+        )
+        .await
+    }
+
     pub async fn restart_alice(&mut self) {
         self.alice_handle.abort();
 

swap/tests/rpc.rs

@@ -0,0 +1,436 @@
+pub mod harness;
+#[cfg(test)]
+mod test {
+
+    use anyhow::Result;
+
+    use jsonrpsee::ws_client::WsClientBuilder;
+    use jsonrpsee_core::client::{Client, ClientT};
+    use jsonrpsee_core::params::ObjectParams;
+
+    use serial_test::serial;
+
+    use serde_json::Value;
+    use std::collections::HashMap;
+    use std::net::SocketAddr;
+    use std::sync::Arc;
+    use std::time::Duration;
+    use swap::api::request::{Method, Request};
+    use swap::api::Context;
+
+    use crate::harness::alice_run_until::is_xmr_lock_transaction_sent;
+    use crate::harness::bob_run_until::is_btc_locked;
+    use crate::harness::{setup_test, SlowCancelConfig, TestContext};
+    use swap::asb::FixedRate;
+    use swap::protocol::{alice, bob};
+    use swap::tracing_ext::{capture_logs, MakeCapturingWriter};
+    use tracing_subscriber::filter::LevelFilter;
+    use uuid::Uuid;
+
+    const SERVER_ADDRESS: &str = "127.0.0.1:1234";
+    const SERVER_START_TIMEOUT_SECS: u64 = 50;
+    const BITCOIN_ADDR: &str = "bcrt1qahvhjfc7vx5857zf8knxs8yp5lkm26jgyt0k76";
+    const MONERO_ADDR: &str = "53gEuGZUhP9JMEBZoGaFNzhwEgiG7hwQdMCqFxiyiTeFPmkbt1mAoNybEUvYBKHcnrSgxnVWgZsTvRBaHBNXPa8tHiCU51a";
+    const SELLER: &str =
+        "/ip4/127.0.0.1/tcp/9939/p2p/12D3KooWCdMKjesXMJz1SiZ7HgotrxuqhQJbP5sgBm2BwP1cqThi";
+    const SWAP_ID: &str = "ea030832-3be9-454f-bb98-5ea9a788406b";
+
+    pub async fn setup_daemon(
+        harness_ctx: TestContext,
+    ) -> (Client, MakeCapturingWriter, Arc<Context>) {
+        let writer = capture_logs(LevelFilter::DEBUG);
+        let server_address: SocketAddr = SERVER_ADDRESS.parse().unwrap();
+
+        let request = Request::new(Method::StartDaemon {
+            server_address: Some(server_address),
+        });
+
+        let context = Arc::new(harness_ctx.get_bob_context().await);
+
+        let context_clone = context.clone();
+
+        tokio::spawn(async move {
+            if let Err(err) = request.call(context_clone).await {
+                println!("Failed to initialize daemon for testing: {}", err);
+            }
+        });
+
+        for _ in 0..SERVER_START_TIMEOUT_SECS {
+            if writer.captured().contains("Started RPC server") {
+                let url = format!("ws://{}", SERVER_ADDRESS);
+                let client = WsClientBuilder::default().build(&url).await.unwrap();
+
+                return (client, writer, context);
+            }
+
+            tokio::time::sleep(Duration::from_secs(1)).await;
+        }
+
+        panic!(
+            "Failed to start RPC server after {} seconds",
+            SERVER_START_TIMEOUT_SECS
+        );
+    }
+
+    fn assert_has_keys_serde(map: &serde_json::Map<String, Value>, keys: &[&str]) {
+        for &key in keys {
+            assert!(map.contains_key(key), "Key {} is missing", key);
+        }
+    }
+
+    // Helper function for HashMap
+    fn assert_has_keys_hashmap<T>(map: &HashMap<String, T>, keys: &[&str]) {
+        for &key in keys {
+            assert!(map.contains_key(key), "Key {} is missing", key);
+        }
+    }
+
+    #[tokio::test]
+    #[serial]
+    pub async fn get_swap_info() {
+        setup_test(SlowCancelConfig, |mut harness_ctx| async move {
+            // Start a swap and wait for xmr lock transaction to be published (XmrLockTransactionSent)
+            let (bob_swap, _) = harness_ctx.bob_swap().await;
+            let bob_swap_id = bob_swap.id;
+            tokio::spawn(bob::run_until(bob_swap, is_btc_locked));
+            let alice_swap = harness_ctx.alice_next_swap().await;
+            alice::run_until(
+                alice_swap,
+                is_xmr_lock_transaction_sent,
+                FixedRate::default(),
+            )
+            .await?;
+
+            let (client, _, _) = setup_daemon(harness_ctx).await;
+
+            let response: HashMap<String, Vec<(Uuid, String)>> = client
+                .request("get_history", ObjectParams::new())
+                .await
+                .unwrap();
+            let swaps: Vec<(Uuid, String)> = vec![(bob_swap_id, "btc is locked".to_string())];
+
+            assert_eq!(response, HashMap::from([("swaps".to_string(), swaps)]));
+
+            let response: HashMap<String, HashMap<Uuid, Vec<Value>>> = client
+                .request("get_raw_states", ObjectParams::new())
+                .await
+                .unwrap();
+
+            let response_raw_states = response.get("raw_states").unwrap();
+
+            assert!(response_raw_states.contains_key(&bob_swap_id));
+            assert_eq!(response_raw_states.get(&bob_swap_id).unwrap().len(), 2);
+
+            let mut params = ObjectParams::new();
+            params.insert("swap_id", bob_swap_id).unwrap();
+            let response: HashMap<String, Value> =
+                client.request("get_swap_info", params).await.unwrap();
+
+            // Check primary keys in response
+            assert_has_keys_hashmap(
+                &response,
+                &[
+                    "txRefundFee",
+                    "swapId",
+                    "cancelTimelock",
+                    "timelock",
+                    "punishTimelock",
+                    "stateName",
+                    "btcAmount",
+                    "startDate",
+                    "btcRefundAddress",
+                    "txCancelFee",
+                    "xmrAmount",
+                    "completed",
+                    "txLockId",
+                    "seller",
+                ],
+            );
+
+            // Assert specific fields
+            assert_eq!(response.get("swapId").unwrap(), &bob_swap_id.to_string());
+            assert_eq!(
+                response.get("stateName").unwrap(),
+                &"btc is locked".to_string()
+            );
+            assert_eq!(response.get("completed").unwrap(), &Value::Bool(false));
+
+            // Check seller object and its keys
+            let seller = response
+                .get("seller")
+                .expect("Field 'seller' is missing from response")
+                .as_object()
+                .expect("'seller' is not an object");
+            assert_has_keys_serde(seller, &["peerId"]);
+
+            // Check timelock object, nested 'None' object, and blocks_left
+            let timelock = response
+                .get("timelock")
+                .expect("Field 'timelock' is missing from response")
+                .as_object()
+                .expect("'timelock' is not an object");
+            let none_obj = timelock
+                .get("None")
+                .expect("Field 'None' is missing from 'timelock'")
+                .as_object()
+                .expect("'None' is not an object in 'timelock'");
+            let blocks_left = none_obj
+                .get("blocks_left")
+                .expect("Field 'blocks_left' is missing from 'None'")
+                .as_i64()
+                .expect("'blocks_left' is not an integer");
+
+            // Validate blocks_left
+            assert!(
+                blocks_left > 0 && blocks_left <= 180,
+                "Field 'blocks_left' should be > 0 and <= 180 but got {}",
+                blocks_left
+            );
+
+            Ok(())
+        })
+        .await;
+    }
+
+    #[tokio::test]
+    #[serial]
+    pub async fn test_rpc_calls() {
+        setup_test(SlowCancelConfig, |harness_ctx| async move {
+            let alice_addr = harness_ctx.bob_params.get_concentenated_alice_address();
+            let (change_address, receive_address) =
+                harness_ctx.bob_params.get_change_receive_addresses().await;
+
+            let (client, writer, _) = setup_daemon(harness_ctx).await;
+            assert!(client.is_connected());
+
+            let mut params = ObjectParams::new();
+
+            params.insert("force_refresh", false).unwrap();
+            let response: HashMap<String, i32> = client
+                .request("get_bitcoin_balance", params)
+                .await
+                .unwrap();
+
+            assert_eq!(response, HashMap::from([("balance".to_string(), 10000000)]));
+
+
+            let mut params = ObjectParams::new();
+            params.insert("log_reference_id", "test_ref_id").unwrap();
+            params.insert("force_refresh", false).unwrap();
+
+            let _: HashMap<String, i32> = client.request("get_bitcoin_balance", params).await.unwrap();
+
+            assert!(writer.captured().contains(
+                r#"method{method_name="Balance" log_reference_id="\"test_ref_id\""}: swap::api::request: Current Bitcoin balance as of last sync balance=0.1 BTC"#
+            ));
+
+            for method in ["get_swap_info", "resume_swap", "cancel_refund_swap"].iter() {
+                let mut params = ObjectParams::new();
+                params.insert("swap_id", "invalid_swap").unwrap();
+
+                let response: Result<HashMap<String, String>, _> =
+                    client.request(method, params).await;
+                response.expect_err(&format!(
+                    "Expected an error when swap_id is invalid for method {}",
+                    method
+                ));
+
+                let params = ObjectParams::new();
+
+                let response: Result<HashMap<String, String>, _> =
+                    client.request(method, params).await;
+                response.expect_err(&format!(
+                    "Expected an error when swap_id is missing for method {}",
+                    method
+                ));
+            }
+
+            let params = ObjectParams::new();
+            let result: Result<HashMap<String, String>, _> =
+                client.request("list_sellers", params).await;
+
+            result.expect_err("Expected an error when rendezvous_point is missing");
+
+            let params = ObjectParams::new();
+            let result: Result<HashMap<String, String>, _> =
+                client.request("list_sellers", params).await;
+
+            result.expect_err("Expected an error when rendezvous_point is missing");
+
+            let params = ObjectParams::new();
+            let response: Result<HashMap<String, String>, _> =
+                client.request("withdraw_btc", params).await;
+            response.expect_err("Expected an error when withdraw_address is missing");
+
+            let mut params = ObjectParams::new();
+            params.insert("address", "invalid_address").unwrap();
+            let response: Result<HashMap<String, String>, _> =
+                client.request("withdraw_btc", params).await;
+            response.expect_err("Expected an error when withdraw_address is malformed");
+
+            let mut params = ObjectParams::new();
+            params.insert("address", BITCOIN_ADDR).unwrap();
+            params.insert("amount", "0").unwrap();
+            let response: Result<HashMap<String, String>, _> =
+                client.request("withdraw_btc", params).await;
+            response.expect_err("Expected an error when amount is 0");
+
+            let mut params = ObjectParams::new();
+            params
+                .insert("address", BITCOIN_ADDR)
+                .unwrap();
+            params.insert("amount", "0.01").unwrap();
+            let response: HashMap<String, Value> = client
+                .request("withdraw_btc", params)
+                .await
+                .expect("Expected a valid response");
+
+            assert_has_keys_hashmap(&response, &["signed_tx", "amount", "txid"]);
+            assert_eq!(
+                response.get("amount").unwrap().as_u64().unwrap(),
+                1_000_000
+            );
+
+            let params = ObjectParams::new();
+            let response: Result<HashMap<String, String>, _> =
+                client.request("buy_xmr", params).await;
+            response.expect_err("Expected an error when no params are given");
+
+            let mut params = ObjectParams::new();
+            params
+                .insert("bitcoin_change_address", BITCOIN_ADDR)
+                .unwrap();
+            params
+                .insert("monero_receive_address", MONERO_ADDR)
+                .unwrap();
+            let response: Result<HashMap<String, String>, _> =
+                client.request("buy_xmr", params).await;
+            response.expect_err("Expected an error when seller is missing");
+
+            let mut params = ObjectParams::new();
+            params
+                .insert("bitcoin_change_address", BITCOIN_ADDR)
+                .unwrap();
+            params.insert("seller", SELLER).unwrap();
+            let response: Result<HashMap<String, String>, _> =
+                client.request("buy_xmr", params).await;
+            response.expect_err("Expected an error when monero_receive_address is missing");
+
+            let mut params = ObjectParams::new();
+            params
+                .insert("monero_receive_address", MONERO_ADDR)
+                .unwrap();
+            params.insert("seller", SELLER).unwrap();
+            let response: Result<HashMap<String, String>, _> =
+                client.request("buy_xmr", params).await;
+            response.expect_err("Expected an error when bitcoin_change_address is missing");
+
+            let mut params = ObjectParams::new();
+            params
+                .insert("bitcoin_change_address", "invalid_address")
+                .unwrap();
+            params
+                .insert("monero_receive_address", MONERO_ADDR)
+                .unwrap();
+            params.insert("seller", SELLER).unwrap();
+            let response: Result<HashMap<String, String>, _> =
+                client.request("buy_xmr", params).await;
+            response.expect_err("Expected an error when bitcoin_change_address is malformed");
+
+            let mut params = ObjectParams::new();
+            params
+                .insert("bitcoin_change_address", BITCOIN_ADDR)
+                .unwrap();
+            params
+                .insert("monero_receive_address", "invalid_address")
+                .unwrap();
+            params.insert("seller", SELLER).unwrap();
+            let response: Result<HashMap<String, String>, _> =
+                client.request("buy_xmr", params).await;
+            response.expect_err("Expected an error when monero_receive_address is malformed");
+
+
+            let mut params = ObjectParams::new();
+            params
+                .insert("bitcoin_change_address", BITCOIN_ADDR)
+                .unwrap();
+            params
+                .insert("monero_receive_address", MONERO_ADDR)
+                .unwrap();
+            params.insert("seller", "invalid_seller").unwrap();
+            let response: Result<HashMap<String, String>, _> =
+                client.request("buy_xmr", params).await;
+            response.expect_err("Expected an error when seller is malformed");
+
+            let response: Result<HashMap<String, String>, _> = client
+                .request("suspend_current_swap", ObjectParams::new())
+                .await;
+            response.expect_err("Expected an error when no swap is running");
+
+            let mut params = ObjectParams::new();
+            params
+                .insert("bitcoin_change_address", change_address)
+                .unwrap();
+            params
+                .insert("monero_receive_address", receive_address)
+                .unwrap();
+
+            params.insert("seller", alice_addr).unwrap();
+            let response: HashMap<String, Value> = client
+                .request("buy_xmr", params)
+                .await
+                .expect("Expected a HashMap, got an error");
+
+            assert_has_keys_hashmap(&response, &["swapId"]);
+
+            Ok(())
+        })
+        .await;
+    }
+
+    #[tokio::test]
+    #[serial]
+    pub async fn suspend_current_swap_swap_running() {
+        setup_test(SlowCancelConfig, |harness_ctx| async move {
+            let (client, _, ctx) = setup_daemon(harness_ctx).await;
+
+            ctx.swap_lock
+                .acquire_swap_lock(Uuid::parse_str(SWAP_ID).unwrap())
+                .await
+                .unwrap();
+            let cloned_ctx = ctx.clone();
+
+            tokio::spawn(async move {
+                // Immediately release lock when suspend signal is received. Mocks a running swap that is then cancelled.
+                ctx.swap_lock
+                    .listen_for_swap_force_suspension()
+                    .await
+                    .unwrap();
+                ctx.swap_lock.release_swap_lock().await.unwrap();
+            });
+
+            let response: HashMap<String, String> = client
+                .request("suspend_current_swap", ObjectParams::new())
+                .await
+                .unwrap();
+            assert_eq!(
+                response,
+                HashMap::from([("swapId".to_string(), SWAP_ID.to_string())])
+            );
+
+            cloned_ctx
+                .swap_lock
+                .acquire_swap_lock(Uuid::parse_str(SWAP_ID).unwrap())
+                .await
+                .unwrap();
+
+            let response: Result<HashMap<String, String>, _> = client
+                .request("suspend_current_swap", ObjectParams::new())
+                .await;
+            response.expect_err("Expected an error when suspend signal times out");
+
+            Ok(())
+        })
+        .await;
+    }
+}