667401a855 [test] only run feature_rbf.py once (glozow)
Pull request description:
There is no need to run this test twice with --descriptors and --legacy-wallet, as it doesn't use the wallet.
ACKs for top commit:
aureleoules:
ACK 667401a855.
theStack:
ACK 667401a855
brunoerg:
ACK 667401a855
Tree-SHA512: 339213159fac29ebc5678461fae41645aed57877d5525e8ca4755890b869a17ae0bea3f590114769c84b71a7df20c59c9530ab8b327912151c82ec58022f7e71
53e7ed075c doc: Release notes and other docs for migration (Andrew Chow)
9c44bfe244 Test migratewallet (Andrew Chow)
0b26e7cdf2 descriptors: addr() and raw() should return false for ToPrivateString (Andrew Chow)
31764c3f87 Add migratewallet RPC (Andrew Chow)
0bf7b38bff Implement MigrateLegacyToDescriptor (Andrew Chow)
e7b16f925a Implement MigrateToSQLite (Andrew Chow)
5b62f095e7 wallet: Refactor SetupDescSPKMs to take CExtKey (Andrew Chow)
22401f17e0 Implement LegacyScriptPubKeyMan::DeleteRecords (Andrew Chow)
35f428fae6 Implement LegacyScriptPubKeyMan::MigrateToDescriptor (Andrew Chow)
ea1ab390e4 scriptpubkeyman: Implement GetScriptPubKeys in Legacy (Andrew Chow)
e664af2976 Apply label to all scriptPubKeys of imported combo() (Andrew Chow)
Pull request description:
This PR adds a new `migratewallet` RPC which migrates a legacy wallet to a descriptor wallet. Migrated wallets will need a new backup. If a wallet has watchonly stuff in it, a new watchonly descriptor wallet will be created containing those watchonly things. The related transactions, labels, and descriptors for those watchonly things will be removed from the original wallet. Migrated wallets will not have any of the legacy things be available for fetching from `getnewaddress` or `getrawchangeaddress`. Wallets that have private keys enabled will have newly generated descriptors. Wallets with private keys disabled will not have any active `ScriptPubKeyMan`s.
For the basic HD wallet case of just generated keys, in addition to the standard descriptor wallet descriptors using the master key derived from the pre-existing hd seed, the migration will also create 3 descriptors for each HD chain in: a ranged combo external, a ranged combo internal, and a single key combo for the seed (the seed is a valid key that we can receive coins at!). The migrated wallet will then have newly generated descriptors as the active `ScriptPubKeyMan`s. This is equivalent to creating a new descriptor wallet and importing the 3 descriptors for each HD chain. For wallets containing non-HD keys, each key will have its own combo descriptor.
There are also tests.
ACKs for top commit:
Sjors:
tACK 53e7ed075c
w0xlt:
reACK 53e7ed075c
Tree-SHA512: c0c003694ca2e17064922d08e8464278d314e970efb7df874b4fe04ec5d124c7206409ca701c65c099d17779ab2136ae63f1da2a9dba39b45f6d62cf93b5c60a
3add234546 ui: show header pre-synchronization progress (Pieter Wuille)
738421c50f Emit NotifyHeaderTip signals for pre-synchronization progress (Pieter Wuille)
376086fc5a Make validation interface capable of signalling header presync (Pieter Wuille)
93eae27031 Test large reorgs with headerssync logic (Suhas Daftuar)
355547334f Track headers presync progress and log it (Pieter Wuille)
03712dddfb Expose HeadersSyncState::m_current_height in getpeerinfo() (Suhas Daftuar)
150a5486db Test headers sync using minchainwork threshold (Suhas Daftuar)
0b6aa826b5 Add unit test for HeadersSyncState (Suhas Daftuar)
83c6a0c524 Reduce spurious messages during headers sync (Suhas Daftuar)
ed6cddd98e Require callers of AcceptBlockHeader() to perform anti-dos checks (Suhas Daftuar)
551a8d957c Utilize anti-DoS headers download strategy (Suhas Daftuar)
ed470940cd Add functions to construct locators without CChain (Pieter Wuille)
84852bb6bb Add bitdeque, an std::deque<bool> analogue that does bit packing. (Pieter Wuille)
1d4cfa4272 Add function to validate difficulty changes (Suhas Daftuar)
Pull request description:
New nodes starting up for the first time lack protection against DoS from low-difficulty headers. While checkpoints serve as our protection against headers that fork from the main chain below the known checkpointed values, this protection only applies to nodes that have been able to download the honest chain to the checkpointed heights.
We can protect all nodes from DoS from low-difficulty headers by adopting a different strategy: before we commit to storing a header in permanent storage, first verify that the header is part of a chain that has sufficiently high work (either `nMinimumChainWork`, or something comparable to our tip). This means that we will download headers from a given peer twice: once to verify the work on the chain, and a second time when permanently storing the headers.
The p2p protocol doesn't provide an easy way for us to ensure that we receive the same headers during the second download of peer's headers chain. To ensure that a peer doesn't (say) give us the main chain in phase 1 to trick us into permanently storing an alternate, low-work chain in phase 2, we store commitments to the headers during our first download, which we validate in the second download.
Some parameters must be chosen for commitment size/frequency in phase 1, and validation of commitments in phase 2. In this PR, those parameters are chosen to both (a) minimize the per-peer memory usage that an attacker could utilize, and (b) bound the expected amount of permanent memory that an attacker could get us to use to be well-below the memory growth that we'd get from the honest chain (where we expect 1 new block header every 10 minutes).
After this PR, we should be able to remove checkpoints from our code, which is a nice philosophical change for us to make as well, as there has been confusion over the years about the role checkpoints play in Bitcoin's consensus algorithm.
Thanks to Pieter Wuille for collaborating on this design.
ACKs for top commit:
Sjors:
re-tACK 3add234546
mzumsande:
re-ACK 3add234546
sipa:
re-ACK 3add234546
glozow:
ACK 3add234546
Tree-SHA512: e7789d65f62f72141b8899eb4a2fb3d0621278394d2d7adaa004675250118f89a4e4cb42777fe56649d744ec445ad95141e10f6def65f0a58b7b35b2e654a875
59aa54f731 i2p: log "SAM session" instead of "session" (Vasil Dimov)
d7ec30b648 doc: add release notes about the I2P transient addresses (Vasil Dimov)
47c0d02f12 doc: document I2P transient addresses usage in doc/i2p.md (Vasil Dimov)
3914e472f5 test: add a test that -i2pacceptincoming=0 creates a transient session (Vasil Dimov)
ae1e97ce86 net: use transient I2P session for outbound if -i2pacceptincoming=0 (Vasil Dimov)
a1580a04f5 net: store an optional I2P session in CNode (Vasil Dimov)
2b781ad66e i2p: add support for creating transient sessions (Vasil Dimov)
Pull request description:
Add support for generating a transient, one-time I2P address for ourselves when making I2P outbound connection and discard it once the connection is closed.
Background
---
In I2P connections, the host that receives the connection knows the I2P address of the connection initiator. This is unlike the Tor network where the recipient does not know who is connecting to them, not even the initiator's Tor address.
Persistent vs transient I2P addresses
---
Even if an I2P node is not accepting incoming connections, they are known to other nodes by their outgoing I2P address. This creates an opportunity to white-list given nodes or treat them differently based on their I2P address. However, this also creates an opportunity to fingerprint or analyze a given node because it always uses the same I2P address when it connects to other nodes. If this is undesirable, then a node operator can use the newly introduced `-i2ptransientout` to generate a transient (disposable), one-time I2P address for each new outgoing connection. That address is never going to be reused again, not even if reconnecting to the same peer later.
ACKs for top commit:
mzumsande:
ACK 59aa54f731 (verified via range-diff that just a typo / `unique_ptr` initialisation were fixed)
achow101:
re-ACK 59aa54f731
jonatack:
utACK 59aa54f731 reviewed range diff, rebased to master, debug build + relevant tests + review at each commit
Tree-SHA512: 2be9b9dd7502b2d44a75e095aaece61700766bff9af0a2846c29ca4e152b0a92bdfa30f61e8e32b6edb1225f74f1a78d19b7bf069f00b8f8173e69705414a93e
The test is a bit primitive as it checks the Bitcoin Core log and
assumes that if it logs that it creates a transient session, then it
does that indeed.
A more thorough test would be to check that it indeed sends the
`SESSION CREATE ... DESTINATION=TRANSIENT` command and that it uses
the returned I2P address for connecting, even for repeated connections
to the same I2P peer. That would require a mocked SAM server (proxy)
implementation in Python.
f6a916683d Add functional test for block announcements during initial headers sync (Suhas Daftuar)
05f7f31598 Reduce bandwidth during initial headers sync when a block is found (Suhas Daftuar)
Pull request description:
On startup, if our headers chain is more than a day behind current time, we'll pick one peer to sync headers with until our best headers chain is caught up (at that point, we'll try to sync headers with all peers).
However, if an INV for a block is received before our headers chain is caught up, we'll then start to sync headers from each peer announcing the block. This can result in doing a big headers sync with many (if not all) of our peers simultaneously, which wastes bandwidth.
This PR would reduce that overhead by picking (at most) one new peer to try syncing headers with whenever a new block is announced, prior to our headers chain being caught up.
ACKs for top commit:
LarryRuane:
ACK f6a916683d
ajtowns:
ACK f6a916683d
mzumsande:
ACK f6a916683d
dergoegge:
Code review ACK f6a916683d
achow101:
ACK f6a916683d
Tree-SHA512: 0662000bd68db146f55981de4adc2e2b07cbfda222b1176569d61c22055e5556752ffd648426f69687ed1cc203105515e7304c12b915d6270df8e41a4a0e1eaa
This command iterates over the inputs and outputs of the given transactions, and tallies up the balance change for the given wallet. This can be useful e.g. when verifying that a coin join like transaction doesn't contain unexpected inputs that the wallet will then sign for unintentionally.
Create a wallet with mixed OutputTypes and send a volley of payments,
ensuring that there are no mixed OutputTypes in the txs. Finally,
verify that OutputTypes are mixed only when necessary.
ffc79b8e49 qa: functional test Miniscript watchonly support (Antoine Poinsot)
bfb036756a Miniscript support in output descriptors (Antoine Poinsot)
4a082887be qa: better error reporting on descriptor parsing error (Antoine Poinsot)
d25d58bf5f miniscript: add a helper to find the first insane sub with no child (Antoine Poinsot)
c38c7c5817 miniscript: don't check for top level validity at parsing time (Antoine Poinsot)
Pull request description:
This adds Miniscript support for Output Descriptors without any signing logic (yet). See the OP of #24147 for a description of Miniscript and a rationale of having it in Bitcoin Core.
On its own, this PR adds "watchonly" support for Miniscript descriptors in the descriptor wallet. A follow-up adds signing support.
A minified corpus of Miniscript Descriptors for the `descriptor_parse` fuzz target is available at https://github.com/bitcoin-core/qa-assets/pull/92.
The Miniscript descriptors used in the unit tests here and in #24149 were cross-tested against the Rust implementation at https://github.com/rust-bitcoin/rust-miniscript.
This PR contains code and insights from Pieter Wuille.
ACKs for top commit:
Sjors:
re-utACK ffc79b8e49
achow101:
ACK ffc79b8e49
w0xlt:
reACK ffc79b8e49
Tree-SHA512: 02d919d38bb626d3c557eca3680ce71117739fa161b7a92cfdb6c9c432ed88870b1ed127ba24248574c40c7428217d7e9bdd986fd8cd7c51fae8c776e1271fb9
0ee43d13e9 test: refactor rpc_signrawtransaction.py (Ayush Sharma)
Pull request description:
`rpc_signrawtransaction.py` currently tests the `signrawtransactionwithkey` and `signrawtransactionwithwallet` RPCs.
This PR splits `rpc_signrawtransaction.py` into
1. `rpc_signrawtransactionwithkey.py`: the tests for `signrawtransactionwithkey` are moved here and this test can now be run with the wallet disabled.
2. `wallet_signrawtransactionwithwallet.py`: wallet only tests for `signrawtransactionwithwallet.py`
ACKs for top commit:
aureleoules:
tACK 0ee43d13e9.
Tree-SHA512: c7bd2ea746345c978eae231a781fc52953b9d277eb9f8abb9c3270fe1d9f678f23f3784377d7303a2aa23d7ad90097245e517d386b27b4e0016585dfddcb9d49
50ba6697f3 remove unused functions (Ayush Sharma)
eec23dad1e test: remove wallet dependency from feature_nulldummy.py (Ayush Sharma)
Pull request description:
This PR enables one of the non-wallet functional tests (`feature_nulldummy.py`) to be run even with the Bitcoin Core wallet disabled.
Commit 1: removes wallet dependency and `test_runner.py` is edited to make sure the test only runs once.
Commit 2: the functions `create_transaction()` and `create_raw_transaction()` in `blocktools.py` are no longer needed and hence removed.
ACKs for top commit:
kouloumos:
re-ACK 50ba6697f3, all comments have been addressed.
Tree-SHA512: 3bc3d2766e53dba3d56a03f2c476442608ac693f51d84f4632a22a2cf169bc02c10bf92b676f7d57acb4f0ad86f307d37ab63f936b44b3585ee3c9d08cd0335f
e866f0d066 [functional test] submitrawpackage RPC (glozow)
fa076515b0 [rpc] add new submitpackage RPC (glozow)
Pull request description:
It would be nice for LN/wallet/app devs to test out package policy, package RBF, etc., but the only interface to do so right now is through unit tests. This PR adds a `-regtest` only RPC interface so people can test by submitting raw transaction data. It is regtest-only, as it would be unsafe/confusing to create an actual mainnet interface while package relay doesn't exist.
Note that the functional tests are there to ensure the RPC interface is working properly; they aren't for testing policy itself. See src/test/txpackage_tests.cpp.
ACKs for top commit:
t-bast:
Tested ACK against eclair e866f0d066
ariard:
Code Review ACK e866f0d0
instagibbs:
code review ACK e866f0d066
Tree-SHA512: 824a26b10d2240e0fd85e5dd25bf499ee3dd9ba8ef4f522533998fcf767ddded9f001f7a005fe3ab07ec95e696448484e26599803e6034ed2733125c8c376c84
rpc_signrawtransaction.py is split into rpc_signrawtransactionwithkey.py and wallet_signrawtransactionwithwallet.py.
rpc_signrawtransactionwithkey.py can be run with the wallet disabled.
48262a00f5 Add functional test for block sync from inbound peers (Suhas Daftuar)
0569b5c4bb Sync chain more readily from inbound peers during IBD (Suhas Daftuar)
Pull request description:
When in IBD, if the honest chain is only known by inbound peers, then we must
eventually sync from them in order to learn it. This change allows us to
perform initial headers sync and fetch blocks from inbound peers, if we have no
blocks in flight.
The restriction on having no blocks in flight means that we will naturally
throttle our block downloads to any such inbound peers that we may be
downloading from, until we leave IBD. This is a tradeoff between preferring
outbound peers for most of our block download, versus making sure we always
eventually will get blocks we need that are only known by inbound peers even
during IBD, as otherwise we may be stuck in IBD indefinitely (which could have
cascading failure on the network, if a large fraction of the network managed to
get stuck in IBD).
Note that the test in the second commit fails on master, without the first commit.
ACKs for top commit:
ajtowns:
ACK 48262a00f5
sipa:
ACK 48262a00f5
Tree-SHA512: ffad3a05fa9a32a92226843c9128f52c275e8d51930fde7368badc340227f2ed680561c4c9f2937b4e3bd722474464849ec9b624f912f5e380ce98d71b55764d
e8959000b6 test: Use MiniWallet in rpc_rawtransaction.py (Daniela Brozzoni)
e93046c10b MOVEONLY: Move signrawtransactionwithwallet test (Daniela Brozzoni)
Pull request description:
This PR allows `rpc_rawtransaction.py` to be run even without the Core wallet by using the MiniWallet instead, as proposed in https://github.com/bitcoin/bitcoin/issues/20078.
This test was previously run twice, once with `--legacy-wallet` and once with
`--descriptors`. Since this would have meant running the same test twice
if the wallet wasn't compiled, now we run it just once with the legacy
wallet.
ACKs for top commit:
jonatack:
ACK e8959000b6
Tree-SHA512: d1580570a54dad8e30a5df1ab7d03ecb3f824efe6843323e1f3aef63592045d823c7d54fc86321dc7c1d414854a253431a01a7baa9f30426ea9a09ef11ae3a04
This test was previously run twice, once with `--legacy-wallet` and once with
`--descriptors`.
Now we run it only with `--legacy-wallet`, as all the tests has been
ported to the MiniWallet but `raw_multisig_transaction_legacy_tests`,
which can be run only with the legacy wallet.
We also decrease the number of nodes used from 4 to 3, making the test
run slightly faster.
4185570340 Add RPC to get mempool txs spending outputs (t-bast)
Pull request description:
We add an RPC to fetch mempool transactions spending any of the given outpoints.
Without this RPC, application developers need to first call `getrawmempool` which returns a long list of `txid`, then fetch each of these transactions individually (`getrawtransaction`) to check whether they spend the given outpoints, which wastes a lot of bandwidth (in the worst case we need to transfer the whole mempool).
For example in lightning, when we discover that one of our channel funding transactions has been spent, we need to find the spending transaction to claim our outputs from it. We are currently forced to fetch the whole mempool to do the analysis ourselves, which is quite costly.
I believe that this RPC is also generally useful when doing some introspection on your mempool after one of your transactions failed to broadcast, for example when you implement RBF at the application level. Fetching and analyzing the conflicting transaction gives you more information to successfully replace it.
ACKs for top commit:
darosior:
re-utACK 4185570340
vincenzopalazzo:
re-ACK 4185570340
danielabrozzoni:
re-tACK 4185570340
w0xlt:
reACK 4185570340
Tree-SHA512: 206687efb720308b7e0b6cf16dd0a994006c0b5a290c8eb386917a80130973a6356d0d5cae1c63a01bb29e066dd721594969db106cba7249214fcac90d2c3dbc
3258bad996 changes color of skipped functional tests (Jacob P. Fickes)
Pull request description:
changes the color of skipped functional tests (currently grey and can be hard to read/invisible on dark backgrounds) to yellow.
resolves#24791
ACKs for top commit:
theStack:
Tested ACK 3258bad996
jarolrod:
Tested ACK 3258bad996
Tree-SHA512: 3fe5ae0d3b4902b2b6bda6e89ab780feb8bf4b7cb1ce7e8467057b94a1e0a26ddeaf3cac0bc19b06ef10d8bccaac9c495029d42740fbedab8fb0d5fdd7d02eaf
We add an RPC to fetch the mempool transactions spending given outpoints.
Without this RPC, application developers would need to first call
`getrawmempool` which returns a long list of `txid`, then fetch each of
these txs individually to check whether they spend the given outpoint(s).
This RPC can later be enriched to also find confirmed transactions instead
of being restricted to mempool transactions.
5f213213cb tests: add tests for cross-chain wallet use prevention (Seibart Nedor)
968765973b wallet: ensure wallet files are not reused across chains (Seibart Nedor)
Pull request description:
This implements a proposal in #12805 and is a rebase of #14533.
This seems to be a working approach, but I'm not sure why the `p2p_segwit.py` functional test needed a change, so I'll look into it more.
ACKs for top commit:
achow101:
ACK 5f213213cb
dongcarl:
Code Review ACK 5f213213cb
[deleted]:
tACK 5f213213cb
Tree-SHA512: 2c934300f113e772fc31c16ef5588526300bbc36e4dcef7d77bd0760c5c8f0ec77f766b1bed5503eb0157fa26dc900ed54d2ad1b41863c1f736ce5c1f3b67bec
fafd67479a test: Remove previous release check (MarcoFalke)
Pull request description:
Now that the commit (7c08d81e11) which changes taproot to be enforced for all blocks is sufficiently buried by other commits, and thus less likely to be reverted, it seems a good time to remove no longer needed test code.
The `feature_taproot` functional test is cleaned up to no longer run against a previous release. Since previous releases are static and impossible to change, it is sufficient to run the test once against the release. Now that this is done, the check can be removed without decreasing test coverage.
ACKs for top commit:
laanwj:
Concept and code review ACK fafd67479a
vincenzopalazzo:
ACK fafd67479a
Tree-SHA512: fcb1a93f3bf9deb5f5c7327a7cd23be10ba09c9f4cbfa73ee2764a93c6ce7d6fa98ca32f2cf4023c20ab624aee601beec949fd02a57a3a658fdbd4be1a9ff338
71c3f0356c move-only: Rename index + pruning functional test (Fabian Jahr)
de08932efa test: Update test for indices on pruned nodes (Fabian Jahr)
825d19839b Index: Allow coinstatsindex with pruning enabled (Fabian Jahr)
f08c9fb0c6 Index: Use prune locks for blockfilterindex (Fabian Jahr)
2561823531 blockstorage: Add prune locks to BlockManager (Fabian Jahr)
231fc7b035 refactor: Introduce GetFirstStoredBlock helper function (Fabian Jahr)
Pull request description:
# Motivation
The main motivation of this change and only behavior change noticeable by user is to allow running `coinstatsindex` on pruned nodes as has been requested [here for example](https://twitter.com/benthecarman/status/1388170854140452870?s=20).
# Background
`coinstatsindex` on pruned nodes can be enabled in a much simpler than it is done here but it comes with downside. The ability to run `blockfilterindex`on pruned nodes was added in #15946 but it also added the `blockfilterindex` as a dependency to `validation` and it introduced two new circular dependencies. Enabling `coinstatsindex` on pruned nodes in a similar way would add it as a dependency as well and introduce another circular dependency.
Instead, this PR introduces a `m_prune_blockers` map to `BlockManager` as a flexible approach to block pruning. Entities like `blockfilterindex`, for example, can add a key and a height to block pruning over that height. These entities need to update that value to allow more pruning when they are ready.
# Alternative approach
Upon completing the first draft of this PR I found #19463 as an alternative that follows the same but follows a very different approach. I am listing the main differences here as I see them:
- Usage of globals
- Blocks pruning with a start and a stop height
- Can persist blockers across restarts
- Blockers can be set/unset via RPCs
Personally, I don't think any of these are necessary to be added here but if the general approach or specific features are more appealing to reviewers I am happy to change to a solution based on that PR or port over specific parts of it here.
ACKs for top commit:
mzumsande:
Code review ACK 71c3f0356c
ryanofsky:
Code review ACK 71c3f0356c. Changes since last review: just tweaking comments and asserts, and rebasing
w0xlt:
tACK 71c3f0356c on signet.
Tree-SHA512: de7efda08b44aa31013fbebc47a02cd2de32db170b570f9643e1f013fee0e8e7ca3068952d1acc6e5e74a70910735c5f263437981ad73df841ad945b52d36b71
ab5af9ca72 test: Add test for coinselection tracepoints (Andrew Chow)
ca02b68e8a doc: document coin selection tracepoints (Andrew Chow)
8e3f39e4fa wallet: Add some tracepoints for coin selection (Andrew Chow)
15b58383d0 wallet: compute waste for SelectionResults of preset inputs (Andrew Chow)
912f1ed181 wallet: track which coin selection algorithm produced a SelectionResult (Andrew Chow)
Pull request description:
Tracepoints can be useful for coin selection as they would allow us to observe what is being selected, selection parameters, and calculation results. So this PR adds 4 new tracepoints:
1. After `SelectCoins` returns in order to observe the `SelectionResult`
2. After the first `CreateTransactionInternal` to observe the created transaction
3. Prior to the second `CreateTransactionInternal` to notify that the optimistic avoid partial spends selection is occurring
4. After the second `CreateTransactionInternal` to observe the created transaction and inform which solution is being used.
This PR also adds an algorithm enum to `SelectionResult` so that the first tracepoint will be able to report which algorithm was used to produce that result.
The primary use case for these tracepoints is in running coin selection simulations. The script I use to run these simulations use these tracepoints in order to gather data on the algorithm used and the calculated waste.
ACKs for top commit:
jb55:
crACK ab5af9ca72
josibake:
crACK ab5af9ca72
0xB10C:
ACK ab5af9ca72. Code reviewed, ran the `interface_usdt_coinselection.py` test, and tested with the above bpftrace script (updated `%d` -> `%ld` where necessary, ty achow101).
Tree-SHA512: a4bf7a910cdf464622f2f3b5d44c15b891f24852df6e7f8c5b177fe3d8aaa4a1164593a24c3960eb22b16544fa7140e5c745345367b9e291b78395084c0ac8ff
Changes the color of skipped functional tests to the default text color of the terminal. This will make skipped tests easy to read on the majority of background colors rather than the original grey color (hard to read on dark backgrounds) and the proposed yellow change (hard to read on white backgrounds)
76c60d7b31 test: validation:block_connected tracepoint test (0xb10c)
260e28ece8 test: utxocache:* tracepoint tests (0xb10c)
34b27bac68 test: net:in/out_message tracepoint tests (0xb10c)
c934087b62 test: checks for tracepoint tests (0xb10c)
Pull request description:
This adds functional tests for the USDT tracepoints added in https://github.com/bitcoin/bitcoin/pull/22006 and https://github.com/bitcoin/bitcoin/pull/22902. This partially fixes#23296. The tests **are probably skipped** on most systems as these tests require:
- a Linux system with a kernel that supports BPF (and available kernel headers)
- that Bitcoin Core is compiled with tracepoints for USDT support (default when compiled with depends)
- [bcc](https://github.com/iovisor/bcc) installed
- the tests are run with a privileged user that is able to e.g. do BPF syscalls and load BPF maps
The tests are not yet run in our CI as the CirrusCI containers lack the required permissions (see https://github.com/bitcoin/bitcoin/issues/23296#issuecomment-1024920845). Running the tests in a VM in the CI could work, but I haven't experimented with this yet. The priority was to get the actual tests done first to ensure the tracepoints work as intended for the v23.0 release. Running the tracepoint tests in the CI is planned as the next step to finish #23296.
The tests can, however, be run against e.g. release candidates by hand. Additionally, they provide a starting point for tests for future tracepoints. PRs adding new tracepoint should include tests. This makes reviewing these PRs easier.
The tests require privileges to execute BPF sycalls (`CAP_SYS_ADMIN` before Linux kernel 5.8 and `CAP_BPF` and `CAP_PERFMON` on 5.8+) and permissions to `/sys/kernel/debug/tracing/`. It's currently recommended to run the tests in a virtual machine (or on a VPS) where it's sensible to use the `root` user to gain these privileges. Never run python scripts you haven't carefully reviewed with `root` permissions! It's unclear if a non-root user can even gain the required privileges. This needs more experimenting.
The goal here is to test the tracepoint interface to make sure the [documented interface](https://github.com/bitcoin/bitcoin/blob/master/doc/tracing.md#tracepoint-documentation) does not break by accident. The tracepoints expose implementation details. This means we also need to rely on implementation details of Bitcoin Core in these functional tests to trigger the tracepoints. An example is the test of the `utxocache:flush` tracepoint: On Bitcoin Core shutdown, the UTXO cache is flushed twice. The corresponding tracepoint test expects two flushes, too - if not, the test fails. Changing implementation details could cause these tests to fail and the tracepoint API to break. However, we purposefully treat the tracepoints only as [**semi-stable**](https://github.com/bitcoin/bitcoin/blob/master/doc/tracing.md#semi-stable-api). The tracepoints should not block refactors or changes to other internals.
ACKs for top commit:
jb55:
tACK 76c60d7b31
laanwj:
Tested ACK 76c60d7b31
Tree-SHA512: 9a63d945c68102e59d751bd8d2805ddd7b37185408fa831d28a9cb6641b701961389b55f216c475df7d4771154e735625067ee957fc74f454ad7a7921255364c
fa9112aac0 Remove utxo db upgrade code (MarcoFalke)
Pull request description:
It is not possible to upgrade Bitcoin Core pre-segwit (pre-0.13.1) to a recent version without a full IBD from scratch after commit 19a56d1519 (released in version 22.0).
Any Bitcoin Core version with the new database format after commit 1088b02f0c (released in version 0.15), can upgrade to any version that is supported as of today.
This leaves the versions 0.13.1-0.14.x. Even though those versions are unsupported, some users with an existing datadir may want to upgrade to a recent version. However, it seems reasonable to simply ask them to `-reindex` to run a full IBD from scratch. This allows us to remove the utxo db upgrade code.
ACKs for top commit:
Sjors:
re-ACK fa9112aac0
laanwj:
Code review ACK fa9112aac0
Tree-SHA512: 4243bb35df9ac4892f9fad30fe486d338745952bcff4160bcb0937c772d57b13b800647da14695e21e3655e85ee0d95fa3dc7789ee309d59ad84f422297fecb8
bb84b7145b add tests for no recipient and using send_max while inputs are specified (ishaanam)
49090ec402 Add sendall RPC née sweep (Murch)
902793c777 Extract FinishTransaction from send() (Murch)
6d2208a3f6 Extract interpretation of fee estimation arguments (Murch)
a31d75e5fb Elaborate error messages for outdated options (Murch)
35ed094e4b Extract prevention of outdated option names (Murch)
Pull request description:
Add sendall RPC née sweep
_Motivation_
Currently, the wallet uses a fSubtractFeeAmount (SFFO) flag on the
recipients objects for all forms of sending calls. According to the
commit discussion, this flag was chiefly introduced to permit sweeping
without manually calculating the fees of transactions. However, the flag
leads to unintuitive behavior and makes it more complicated to test
many wallet RPCs exhaustively. We proposed to introduce a dedicated
`sendall` RPC with the intention to cover this functionality.
Since the proposal, it was discovered in further discussion that our
proposed `sendall` rpc and SFFO have subtly different scopes of
operation.
• sendall:
Use _given UTXOs_ to pay a destination the remainder after fees.
• SFFO:
Use a _given budget_ to pay an address the remainder after fees.
While `sendall` will simplify cases of spending a given set of
UTXOs such as paying the value from one or more specific UTXOs, emptying
a wallet, or burning dust, we realized that there are some cases in
which SFFO is used to pay other parties from a limited budget,
which can often lead to the creation of change outputs. This cannot be
easily replicated using `sendall` as it would require manual
computation of the appropriate change amount.
As such, sendall cannot replace all uses of SFFO, but it still has a
different use case and will aid in simplifying some wallet calls and
numerous wallet tests.
_Sendall call details_
The proposed sendall call builds a transaction from a specific
subset of the wallet's UTXO pool (by default all of them) and assigns
the funds to one or more receivers. Receivers can either be specified
with a given amount or receive an equal share of the remaining
unassigned funds. At least one recipient must be provided without
assigned amount to collect the remainder. The `sendall` call will
never create change. The call has a `send_max` option that changes the
default behavior of spending all UTXOs ("no UTXO left behind"), to
maximizing the output amount of the transaction by skipping uneconomic
UTXOs. The `send_max` option is incompatible with providing a specific
set of inputs.
---
Edit: Replaced OP with latest commit message to reflect my updated motivation of the proposal.
ACKs for top commit:
achow101:
re-ACK bb84b7145b
Tree-SHA512: 20aaf75d268cb4b144f5d6437d33ec7b5f989256b3daeeb768ae1e7f39dc6b962af8223c5cb42ecc72dc38cecd921c53c077bc0ec300b994e902412213dd2cc3
_Motivation_
Currently, the wallet uses a fSubtractFeeAmount (SFFO) flag on the
recipients objects for all forms of sending calls. According to the
commit discussion, this flag was chiefly introduced to permit sweeping
without manually calculating the fees of transactions. However, the flag
leads to unintuitive behavior and makes it more complicated to test
many wallet RPCs exhaustively. We proposed to introduce a dedicated
`sendall` RPC with the intention to cover this functionality.
Since the proposal, it was discovered in further discussion that our
proposed `sendall` rpc and SFFO have subtly different scopes of
operation.
• sendall:
Use _specific UTXOs_ to pay a destination the remainder after fees.
• SFFO:
Use a _specific budget_ to pay an address the remainder after fees.
While `sendall` will simplify cases of spending from specific UTXOs,
emptying a wallet, or burning dust, we realized that there are some
cases in which SFFO is used to pay other parties from a limited budget,
which can often lead to the creation of change outputs. This cannot be
easily replicated using `sendall` as it would require manual computation
of the appropriate change amount.
As such, sendall cannot replace all uses of SFFO, but it still has a
different use case and will aid in simplifying some wallet calls and
numerous wallet tests.
_Sendall call details_
The proposed sendall call builds a transaction from a specific subset of
the wallet's UTXO pool (by default all of them) and assigns the funds to
one or more receivers. Receivers can either be specified with a specific
amount or receive an equal share of the remaining unassigned funds. At
least one recipient must be provided without assigned amount to collect
the remainder. The `sendall` call will never create change. The call has
a `send_max` option that changes the default behavior of spending all
UTXOs ("no UTXO left behind"), to maximizing the output amount of the
transaction by skipping uneconomic UTXOs. The `send_max` option is
incompatible with providing a specific set of inputs.
fa76d8d4d7 test: Actually print TSan tracebacks (MarcoFalke)
Pull request description:
Commit 5e5138a721 made the TSan logs to be printed before returning an error from the ci script.
However, it seems that on Cirrus CI, the `--failfast` option will kill not only all python process and bitcoind child process, but also the parent CI bash script, rendering the `trap` inefficient. I believe this bug was introduced in commit 451b96f7d2.
ACKs for top commit:
fanquake:
utACK fa76d8d4d7
Tree-SHA512: 686f889d38a343882cb62ad6e0c2080196330e7cc7086891a7ff66d9443b455c82ba8d7e4a5cc42daa0513b0ad2743055bfe90e2f6ac88a910ee3b663fabddcd
2726b60a3a test: use MiniWallet for rpc_createmultisig.py (Ayush Sharma)
Pull request description:
This PR enables one of the non-wallet functional tests (rpc_createmultisig.py) to be run even with the Bitcoin Core wallet disabled by using the MiniWallet instead, as proposed in #20078 .
ACKs for top commit:
danielabrozzoni:
re-ACK 2726b60a3a
Tree-SHA512: fb0ef22d3f1c161ca5963cb19ce76533ac3941f15102fc0aa2286ef3bec48f219e5934d504b41976f9f295fb6ca582b737e0fea896df4eb964cdaba1b2c91650
