fix(asb): Check for updates in background (#215)

swap/src/bin/asb.rs

@@ -29,7 +29,7 @@ use swap::asb::config::{
 };
 use swap::asb::{cancel, punish, redeem, refund, safely_abort, EventLoop, Finality, KrakenRate};
 use swap::common::tracing_util::Format;
-use swap::common::{self, check_latest_version, get_logs};
+use swap::common::{self, get_logs, warn_if_outdated};
 use swap::database::{open_db, AccessMode};
 use swap::network::rendezvous::XmrBtcNamespace;
 use swap::network::swarm;
@@ -63,12 +63,10 @@ pub async fn main() -> Result<()> {
         }
     };
 
-    // warn if we're not on the latest version
-    if let Err(e) = check_latest_version(env!("CARGO_PKG_VERSION")).await {
-        eprintln!("{}", e);
-    }
+    // Check in the background if there's a new version available
+    tokio::spawn(async move { warn_if_outdated(env!("CARGO_PKG_VERSION")).await });
 
-    // read config from the specified path
+    // Read config from the specified path
     let config = match read_config(config_path.clone())? {
         Ok(config) => config,
         Err(ConfigNotInitialized {}) => {
@@ -77,13 +75,13 @@ pub async fn main() -> Result<()> {
         }
     };
 
-    // initialize tracing
+    // Initialize tracing
     let format = if json { Format::Json } else { Format::Raw };
     let log_dir = config.data.dir.join("logs");
     common::tracing_util::init(LevelFilter::DEBUG, format, log_dir, None)
         .expect("initialize tracing");
 
-    // check for conflicting env / config values
+    // Check for conflicting env / config values
     if config.monero.network != env_config.monero_network {
         bail!(format!(
             "Expected monero network in config file to be {:?} but was {:?}",
@@ -118,12 +116,12 @@ pub async fn main() -> Result<()> {
                 );
             }
 
-            // initialize monero wallet
+            // Initialize Monero wallet
             let monero_wallet = init_monero_wallet(&config, env_config).await?;
             let monero_address = monero_wallet.get_main_address();
             tracing::info!(%monero_address, "Monero wallet address");
 
-            // check monero balance
+            // Check Monero balance
             let monero = monero_wallet.get_balance().await?;
             match (monero.balance, monero.unlocked_balance) {
                 (0, _) => {
@@ -146,14 +144,14 @@ pub async fn main() -> Result<()> {
                 }
             }
 
-            // init bitcoin wallet
+            // Initialize Bitcoin wallet
             let bitcoin_wallet = init_bitcoin_wallet(&config, &seed, env_config).await?;
             let bitcoin_balance = bitcoin_wallet.balance().await?;
             tracing::info!(%bitcoin_balance, "Bitcoin wallet balance");
 
             let kraken_price_updates = kraken::connect(config.maker.price_ticker_ws_url.clone())?;
 
-            // setup Tor hidden services
+            // Setup Tor hidden services
             let tor_client =
                 tor::Client::new(config.tor.socks5_port).with_control_port(config.tor.control_port);
             let _ac = match tor_client.assert_tor_running().await {

swap/src/bin/swap.rs

@@ -14,14 +14,9 @@
 use anyhow::Result;
 use std::env;
 use swap::cli::command::{parse_args_and_apply_defaults, ParseResult};
-use swap::common::check_latest_version;
 
 #[tokio::main]
 pub async fn main() -> Result<()> {
-    if let Err(e) = check_latest_version(env!("CARGO_PKG_VERSION")).await {
-        eprintln!("{}", e);
-    }
-
     match parse_args_and_apply_defaults(env::args_os()).await? {
         ParseResult::Success(context) => {
             context.tasks.wait_for_tasks().await?;

swap/src/cli/api.rs

@@ -642,10 +642,9 @@ pub mod api_test {
             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 {
                 namespace: XmrBtcNamespace::from_is_testnet(is_testnet),
                 env_config,

swap/src/common/mod.rs

@@ -1,45 +1,35 @@
 pub mod tracing_util;
 
-use std::{collections::HashMap, path::PathBuf};
-
 use anyhow::anyhow;
+use std::{collections::HashMap, path::PathBuf};
 use tokio::{
     fs::{read_dir, File},
     io::{AsyncBufReadExt, BufReader},
 };
 use uuid::Uuid;
 
-const LATEST_RELEASE_URL: &str = "https://github.com/comit-network/xmr-btc-swap/releases/latest";
+const LATEST_RELEASE_URL: &str = "https://github.com/UnstoppableSwap/core/releases/latest";
 
-#[derive(Clone, Debug, PartialEq, Eq)]
-pub enum Version {
-    Current,
-    Available,
-}
-
-/// Check the latest release from GitHub API.
-pub async fn check_latest_version(current_version: &str) -> anyhow::Result<Version> {
+/// Check the latest release from GitHub and warn if we are not on the latest version.
+pub async fn warn_if_outdated(current_version: &str) -> anyhow::Result<()> {
+    // Visit the Github releases page and check which url we are redirected to
     let response = reqwest::get(LATEST_RELEASE_URL).await?;
-    let e = "Failed to get latest release.";
     let download_url = response.url();
-    let segments = download_url.path_segments().ok_or_else(|| anyhow!(e))?;
-    let latest_version = segments.last().ok_or_else(|| anyhow!(e))?;
 
-    let result = if is_latest_version(current_version, latest_version) {
-        Version::Current
-    } else {
+    let segments = download_url
+        .path_segments()
+        .ok_or_else(|| anyhow!("Cannot split Github release URL into segments"))?;
+    let latest_version = segments
+        .last()
+        .ok_or_else(|| anyhow!("Cannot extract latest version from Github release URL"))?;
+
+    if current_version != latest_version {
         tracing::warn!(%current_version, %latest_version, %download_url,
             "You are not on the latest version",
         );
-        Version::Available
-    };
+    }
 
-    Ok(result)
-}
-
-// todo: naive implementation can be improved using semver
-fn is_latest_version(current: &str, latest: &str) -> bool {
-    current == latest
+    Ok(())
 }
 
 /// helper macro for [`redact`]... eldrich sorcery
@@ -196,25 +186,3 @@ pub fn redact_with(input: &str, replacements: &mut HashMap<String, String>) -> S
 
     redacted
 }
-
-#[cfg(test)]
-mod test {
-    use super::*;
-
-    #[test]
-    fn it_compares_versions() {
-        assert!(is_latest_version("0.10.2", "0.10.2"));
-        assert!(!is_latest_version("0.10.2", "0.10.3"));
-        assert!(!is_latest_version("0.10.2", "0.11.0"));
-    }
-
-    #[tokio::test]
-    #[ignore = "For local testing, makes http requests to github."]
-    async fn it_compares_with_github() {
-        let result = check_latest_version("0.11.0").await.unwrap();
-        assert_eq!(result, Version::Available);
-
-        let result = check_latest_version("0.11.1").await.unwrap();
-        assert_eq!(result, Version::Current);
-    }
-}