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Introduce Watchable abstraction for Bitcoin wallet

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We have a repeated pattern where we construct one of our
Tx{Cancel,Redeem,Punish,Refund,Lock} transactions and wait until
the status of this transaction changes. We can make this more
ergonomic by creating and implementing a `Watchable` trait that
gives access to the TxId and relevant script for this transaction.
This allows us to remove a parameter from the `watch_until_status`
function.

Additionally, there is a 2nd pattern: "Completing" one of these
transaction and waiting until they are confirmed with the configured
number of blocks for finality. We can make this more ergonomic by
returning a future from `broadcast` that callers can await in case
they want to wait for the broadcasted transaction to reach finality.
This commit is contained in:
Thomas Eizinger 2021-03-16 19:11:14 +11:00
parent a0830f099f
commit 273cf15631
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11 changed files with 204 additions and 152 deletions
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11
swap/src/bitcoin/lock.rs
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@ -1,3 +1,4 @@
use crate::bitcoin::wallet::Watchable;
use crate::bitcoin::{
build_shared_output_descriptor, Address, Amount, PublicKey, Transaction, Wallet, TX_FEE,
};
@ -105,3 +106,13 @@ impl From<TxLock> for PartiallySignedTransaction {
from.inner
}
}
impl Watchable for TxLock {
fn id(&self) -> Txid {
self.txid()
}
fn script(&self) -> Script {
self.output_descriptor.script_pubkey()
}
}