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feat: add atomic swap refund transaction handling #3573

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merged 1 commit into from
Nov 17, 2021

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SWvheerden
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@SWvheerden SWvheerden commented Nov 16, 2021

Description

This Pr adds the following things:
Atomic swap refund transactions
Proper handling of the script context
Transaction spend priority
SQL query for filtering locked outputs
Fix broken get_balance tests

Motivation and Context

One of the features that are required for atomic swaps is to be able to process refunds. This PR now allows atomic swap refunds to be processed after the time lock of the HTLC has passed. This can happen in a manual way where the user manually asks the console-wallet via the CLI, or if the time lock has passed the wallet will automatically spend this UTXO first.

One of the missing features of TariScript is the scriptContext, which allows scripts to validate the blockchain state such as block height that is required in this case. This is now piped in anywhere where the script is validated if possible. If the state cannot be gathered, the state is filled in with default values which is how it operated up to now.

This adds in a transaction spend priority that can allow UTXO to be given a priority to be spent. This is the case for high-risk UTXO such as HTLC which more than one party can claim. Manual claim for these transactions is still advised as they can be claimed as soon as possible, but this adds a second automated state where if you want to spend some UTXO at least pick the ones that you need to spend more urgently than the other ones.

The current select_utxos function uses a rust function to filter the maturity of the UTXOs to only select UTXOs it can spend. This PR completely swaps out the selection to be based completely on SQL queries which should be much faster.

All current get_balance tests are broken in where the available and time-locked balance is asserted to be the same. This is not due to the function being broken but rather the test and the testing code. What happened is that tests use a tip_height of u64::MAX but this is too large as the database uses i64::MAX. The problem comes when u64::MAX is cast as i64 as this is equal to -1 and when the query FROM outputs WHERE status = ? AND maturity > ? AND script_lock_height > ? is run, it select everything as the tip is now -1. This ensures that the testing tip is selected as i64::MAX to let the queries run correctly.

How Has This Been Tested?

Added new tests.

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Looks really good so far, just a few comments.

@SWvheerden SWvheerden force-pushed the sw_atomic__refund branch 2 times, most recently from 743e3f6 to efb87a1 Compare November 17, 2021 05:45
philipr-za
philipr-za previously approved these changes Nov 17, 2021
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Just some conflicts to sort.

@SWvheerden SWvheerden force-pushed the sw_atomic__refund branch 2 times, most recently from 55d0311 to acee787 Compare November 17, 2021 12:48
philipr-za
philipr-za previously approved these changes Nov 17, 2021
add tx priority
add script context
@aviator-app aviator-app bot merged commit 337bc6f into tari-project:development Nov 17, 2021
sdbondi added a commit to sdbondi/tari that referenced this pull request Nov 18, 2021
* development: (32 commits)
  feat: add atomic swap refund transaction handling (tari-project#3573)
  feat: improve wallet connectivity status for console wallet (tari-project#3577)
  v0.21.1
  feat: add error codes to LibWallet for CipherSeed errors (tari-project#3578)
  ci: split cucumber job into two (tari-project#3583)
  feat(wallet): import utxo’s as EncumberedToBeReceived rather than Unspent (tari-project#3575)
  docs: rfc 0250_Covenants (tari-project#3574)
  feat: get fee for transactions for stratum transcoder (tari-project#3571)
  test: make monerod stagenet usage resilient (tari-project#3572)
  feat: add atomic swap htlc sending and claiming (tari-project#3552)
  feat: implement prometheus metrics for base node (tari-project#3563)
  feat: implement multiple read single write for sqlite (tari-project#3568)
  feat: trigger time lock balance update when block received (tari-project#3567)
  test: reduce cucumber ci to critical only (tari-project#3566)
  test: fix cucumber console wallet startup (tari-project#3564)
  chore: add node id/public key to log mdc (tari-project#3559)
  fix: avoid implicit using of the time crate (tari-project#3562)
  feat: one-click installer - cli edition (tari-project#3534)
  ci: add workflow dispatch to libwallet build action (tari-project#3556)
  fix: stop leak of value of recovered output (tari-project#3558)
  ...
@SWvheerden SWvheerden deleted the sw_atomic__refund branch November 22, 2021 10:50
sdbondi added a commit to sdbondi/tari that referenced this pull request Nov 23, 2021
* development: (46 commits)
  refactor: remove tari_common dependency from tari_comms (tari-project#3580)
  feat: language detection for mnemonic seed words (tari-project#3590)
  chore: minor clippy fixes (tari-project#3576)
  fix: be more permissive of responses for the incorrect request_id (tari-project#3588)
  feat: track ping failures and disconnect (tari-project#3597)
  chore: upgrade tokio deps tari-project#3581 (tari-project#3595)
  feat: standardize output hash for unblinded output, transaction output and transaction input (tari-project#3592)
  fix: allow bullet proof value only rewinding off one-sided transaction (tari-project#3587)
  refactor: update miningcore repository links (tari-project#3593)
  refactor: clean up unwraps in wallet_ffi (tari-project#3585)
  fix: update daily test start times and seed phrase (tari-project#3584)
  fix: allow bullet proof value only rewinding in atomic swaps (tari-project#3586)
  v0.21.2
  feat: add atomic swap refund transaction handling (tari-project#3573)
  feat: improve wallet connectivity status for console wallet (tari-project#3577)
  v0.21.1
  feat: add error codes to LibWallet for CipherSeed errors (tari-project#3578)
  ci: split cucumber job into two (tari-project#3583)
  feat(wallet): import utxo’s as EncumberedToBeReceived rather than Unspent (tari-project#3575)
  docs: rfc 0250_Covenants (tari-project#3574)
  ...
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2 participants