0f4bc63585 [fuzz] txdownloadman and txdownload_impl (glozow)
699643f23a [unit test] MempoolRejectedTx (glozow)
fa584cbe72 [p2p] add TxDownloadOptions bool to make TxRequestTracker deterministic (glozow)
f803c8ce8d [p2p] filter 1p1c for child txid in recent rejects (glozow)
5269d57e6d [p2p] don't process orphan if in recent rejects (glozow)
2266eba43a [p2p] don't find 1p1cs for reconsiderable txns that are AlreadyHaveTx (glozow)
fa7027d0fc [refactor] add CheckIsEmpty and GetOrphanTransactions, remove access to TxDownloadMan internals (glozow)
969b07237b [refactor] wrap {Have,Get}TxToReconsider in txdownload (glozow)
f150fb94e7 [refactor] make AlreadyHaveTx and Find1P1CPackage private to TxDownloadImpl (glozow)
1e08195135 [refactor] move new tx logic to txdownload (glozow)
257568eab5 [refactor] move invalid package processing to TxDownload (glozow)
c4ce0c1218 [refactor] move invalid tx processing to TxDownload (glozow)
c6b21749ca [refactor] move valid tx processing to TxDownload (glozow)
a8cf3b6e84 [refactor] move Find1P1CPackage to txdownload (glozow)
f497414ce7 [refactor] put peerman tasks at the end of ProcessInvalidTx (glozow)
6797bc42a7 [p2p] restrict RecursiveDynamicUsage of orphans added to vExtraTxnForCompact (glozow)
798cc8f5aa [refactor] move Find1P1CPackage into ProcessInvalidTx (glozow)
416fbc952b [refactor] move new orphan handling to ProcessInvalidTx (glozow)
c8e67b9169 [refactor] move ProcessInvalidTx and ProcessValidTx definitions down (glozow)
3a41926d1b [refactor] move notfound processing to txdownload (glozow)
042a97ce7f [refactor] move tx inv/getdata handling to txdownload (glozow)
58e09f244b [p2p] don't log tx invs when in IBD (glozow)
288865338f [refactor] rename maybe_add_extra_compact_tx to first_time_failure (glozow)
f48d36cd97 [refactor] move peer (dis)connection logic to TxDownload (glozow)
f61d9e4b4b [refactor] move AlreadyHaveTx to TxDownload (glozow)
84e4ef843d [txdownload] add read-only reference to mempool (glozow)
af918349de [refactor] move ValidationInterface functions to TxDownloadManager (glozow)
f6c860efb1 [doc] fix typo in m_lazy_recent_confirmed_transactions doc (glozow)
5f9004e155 [refactor] add TxDownloadManager wrapping TxOrphanage, TxRequestTracker, and bloom filters (glozow)
Pull request description:
Part of #27463.
This PR does 3 things:
(1) It modularizes transaction download logic into a `TxDownloadManager`. Transaction download logic refers to the process of deciding what transactions to request, download, and validate.[1] There should be no behavior changes. Using `--color_moved=dimmed_zebra -w` may help.
(2) It adds unit and fuzz (🪄) testing for transaction download.
(3) It makes a few small behavioral changes:
- Stop (debug-only) logging tx invs during IBD
- Just like all other transactions, require orphans have RecursiveDynamicUsage < 100k before adding to vExtraTxnForCompact
- Don't return a 1p1c that contains a parent or child in recent rejects. Don't process any orphan already in recent rejects. These cases should not happen in actual node operation; it's just to allow tighter sanity checks during fuzzing.
There are several benefits to this interface, such as:
- Unit test coverage and fuzzing for logic that currently isn't feasible to test as thoroughly (without lots of overhead) and/or currently only lightly tested through `assert_debug_log` (not good) in functional tests.
- When we add more functionality (e.g. package relay messages, more robust orphan handling), the vast majority of it will be within `TxDownloadManager` instead of `PeerManager`, making it easier to review and test. See #28031 for what this looks like.
- `PeerManager` will no longer know anything about / have access to `TxOrphanage`, `TxRequestTracker` or the rejection caches. Its primary interface with `TxDownloadManager` would be much simpler:
- Passing on `ValidationInterface` callbacks
- Telling `txdownloadman` when a peer {connects, disconnects}
- Telling `txdownloadman`when a {transaction, package} is {accepted, rejected} from mempool
- Telling `txdownloadman` when invs, notfounds, and txs are received.
- Getting instructions on what to download.
- Getting instructions on what {transactions, packages, orphans} to validate.
- Get whether a peer `HaveMoreWork` for the `ProessMessages` loop
- (todo) Thread-safety can be handled internally.
[1]: This module is concerned with tx *download*, not upload. It excludes transaction announcements/gossip which happens after we download/accept a transaction. Txreconciliation (erlay) is excluded from this module, as it only relates to deciding which `inv`s to send or helping the other peer decide which `inv`s to send. It is independent from this logic.
ACKs for top commit:
achow101:
light ACK 0f4bc63585
theStack:
ACK 0f4bc63585
instagibbs:
reACK 0f4bc63585
naumenkogs:
ACK 0f4bc63585
Tree-SHA512: 84ab8ef8a0fc705eb829d7f7d6885f28944aaa42b03172f256a42605677b3e783919bb900d4e3b8589f85a0c387dfbd972bcd61d252d44a88c6aaa90e4bf920f
The src/node/ directory contains code that needs to access node state
(state in CChain, CBlockIndex, CCoinsView, CTxMemPool, and similar
classes).
Code in src/node/ is meant to be segregated from code in
src/wallet/ and src/qt/, to ensure wallet and GUI
code changes don't interfere with node operation, to allow wallet and GUI code
to run in separate processes, and to perhaps eventually allow wallet and GUI
code to be maintained in separate source repositories.
As a rule of thumb, code in one of the src/node/,
src/wallet/, or src/qt/ directories should avoid
calling code in the other directories directly, and only invoke it indirectly
through the more limited src/interfaces/ classes.
This directory is at the moment
sparsely populated. Eventually more substantial files like
src/validation.cpp and
src/txmempool.cpp might be moved there.
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