Commit graph

763 commits

Author SHA1 Message Date
Carl Dong
0a9a24d8c7 validation: Pass in chainstate to UpdateMempoolForReorg 2021-02-18 14:49:10 -05:00
Carl Dong
7142018812 validation: Pass in chainstate to CTxMemPool::removeForReorg
Several other parameters are now redundant since they can be safely
obtained from the chainstate given that ::cs_main is locked. These are
now removed.
2021-02-18 14:49:10 -05:00
Carl Dong
71734c65dc validation: Pass in chain to ::TestLockPointValidity 2021-02-18 14:49:10 -05:00
Carl Dong
417dafc1ee validation: Remove old AcceptToMemoryPool w/o chainstate param 2021-02-18 14:49:10 -05:00
Carl Dong
229bc37b5f validation: Pass in chainstate to ::AcceptToMemoryPool 2021-02-18 14:43:28 -05:00
Carl Dong
d0da7ea57a validation: Pass in chainstate to ::LoadMempool 2021-02-18 14:43:28 -05:00
Carl Dong
3a205c43dc validation: Pass in chainstate to AcceptToMemoryPoolWithTime 2021-02-18 14:43:28 -05:00
Carl Dong
d8a816329c validation: Add chainstate member to MemPoolAccept 2021-02-18 14:43:28 -05:00
Carl Dong
4c15942b79 validation: Pass in chainstate to ::CheckSequenceLocks 2021-02-18 14:43:28 -05:00
Carl Dong
577b774d0c validation: Remove old CheckFinalTx w/o chain tip param 2021-02-18 14:43:28 -05:00
Carl Dong
d015eaa550 validation: Pass in chain tip to ::CheckFinalTx 2021-02-18 14:43:28 -05:00
Carl Dong
252b489c9f validation: Pass in coins tip to CheckInputsFromMempoolAndCache 2021-02-18 14:43:28 -05:00
Carl Dong
73a6d2b7be validation: Pass in chainstate to IsCurrentForFeeEstimation 2021-02-18 14:43:28 -05:00
Carl Dong
d1f932b0b0 validation: Pass in coins cache to ::LimitMempoolSize 2021-02-18 14:43:28 -05:00
Jonas Schnelli
9017d55e7c
Merge #15946: Allow maintaining the blockfilterindex when using prune
84716b134e Add "index/blockfilterindex -> validation -> index/blockfilterindex" to expected circular dependencies (Jonas Schnelli)
ab3a0a2fb9 Add functional test for blockfilterindex in prune-mode (Jonas Schnelli)
c286a22f7b Add debug startup parameter -fastprune for more effective pruning tests (Jonas Schnelli)
5e112269c3 Avoid pruning below the blockfilterindex sync height (Jonas Schnelli)
00d57ff768 Avoid accessing nullpointer in BaseIndex::GetSummary() (Jonas Schnelli)
6abe9f5b11 Allow blockfilter in conjunction with prune (Jonas Schnelli)

Pull request description:

  Maintaining the blockfilterindexes in prune mode is possible and may lead to efficient p2p based rescans of wallets (restore backups, import/sweep keys) beyond the prune height (rescans not part of that PR).

  This PR allows running the blockfilterindex(es) in conjunction with pruning.
  * Bitcoind/Qt will shutdown during startup when missing block data has been detected ([re]enable `-blockfilterindex` when we already have pruned)
  * manual block pruning is disabled during blockfilterindex sync
  * auto-pruning is delayed during blockfilterindex sync

  ToDos:
  * [x] Functional tests

ACKs for top commit:
  fjahr:
    Code review ACK 84716b1
  ryanofsky:
    Code review ACK 84716b134e. Only changes since last review were suggested new FindFilesToPrune argument and test.
  benthecarman:
    tACK 84716b134e

Tree-SHA512: 91d832c6c562c463f7ec7655c08956385413a99a896640b9737bda0183607fac530435d03d87c3c0e70c61ccdfe73fe8f3639bc7d26d33ca7e60925ebb97d77a
2021-02-18 09:40:42 +01:00
Jonas Schnelli
c286a22f7b Add debug startup parameter -fastprune for more effective pruning tests 2021-02-16 10:26:17 +01:00
Jonas Schnelli
5e112269c3 Avoid pruning below the blockfilterindex sync height 2021-02-16 10:26:15 +01:00
James O'Beirne
f6e2da5fb7
simplify ChainstateManager::SnapshotBlockhash() return semantics
Don't return null snapshotblockhash values to avoid caller complexity/confusion.
2021-02-12 07:53:29 -06:00
James O'Beirne
7a6c46b37e
chainparams: add allowed assumeutxo values
Values for mainnet and testnet will be specified in a follow-up PR that can be
scrutinized accordingly. This structure is required for use in snapshot activation
logic.
2021-02-12 07:53:22 -06:00
Wladimir J. van der Laan
937dfa8398
Merge #21041: log: Move "Pre-allocating up to position 0x[…] in […].dat" log message to debug category
25f899cc23 log: Move "Pre-allocating up to position 0x[...] in [...].dat" log message to debug category (practicalswift)
acd7980b37 log: Move "Leaving block file [...]: [...]" log message to debug category (practicalswift)

Pull request description:

  Move `Pre-allocating up to position 0x[…] in […].dat` log message to debug category.

  After the cleanup of `-debug=net` log messages PR (#20724) was merged recently the console log now has very high signal to noise ratio. That's great! :)

  This PR increases the signal to noise ratio slightly more by moving the most common remaining implementation detail log message (`Pre-allocating up to position 0x[…] in […].dat`) to the debug category where it belongs :)

  Expected standard output from `bitcoind` (when in steady state) before this patch:

  ```
  $ src/bitcoind
  …
  0000-00-00T00:00:00Z UpdateTip: new best=0000000000000000000000000000000000000000000000000000000000000000 height=000000 version=0x00000000 log0_work=00.000000 tx=000000000 date='0000-00-00T00:00:00Z' progress=0.000000 cache=000.0MiB(0000000txo)
  0000-00-00T00:00:00Z UpdateTip: new best=0000000000000000000000000000000000000000000000000000000000000000 height=000000 version=0x00000000 log0_work=00.000000 tx=000000000 date='0000-00-00T00:00:00Z' progress=0.000000 cache=000.0MiB(0000000txo)
  0000-00-00T00:00:00Z Pre-allocating up to position 0x0000000 in blk00000.dat
  0000-00-00T00:00:00Z Pre-allocating up to position 0x000000 in rev00000.dat
  0000-00-00T00:00:00Z UpdateTip: new best=0000000000000000000000000000000000000000000000000000000000000000 height=000000 version=0x00000000 log0_work=00.000000 tx=000000000 date='0000-00-00T00:00:00Z' progress=0.000000 cache=000.0MiB(0000000txo)
  0000-00-00T00:00:00Z UpdateTip: new best=0000000000000000000000000000000000000000000000000000000000000000 height=000000 version=0x00000000 log0_work=00.000000 tx=000000000 date='0000-00-00T00:00:00Z' progress=0.000000 cache=000.0MiB(0000000txo)
  0000-00-00T00:00:00Z UpdateTip: new best=0000000000000000000000000000000000000000000000000000000000000000 height=000000 version=0x00000000 log0_work=00.000000 tx=000000000 date='0000-00-00T00:00:00Z' progress=0.000000 cache=000.0MiB(0000000txo)
  ```

  Expected standard output from `bitcoind` (when in steady state) after this patch:

  ```
  $ src/bitcoind
  …
  0000-00-00T00:00:00Z UpdateTip: new best=0000000000000000000000000000000000000000000000000000000000000000 height=000000 version=0x00000000 log0_work=00.000000 tx=000000000 date='0000-00-00T00:00:00Z' progress=0.000000 cache=000.0MiB(0000000txo)
  0000-00-00T00:00:00Z UpdateTip: new best=0000000000000000000000000000000000000000000000000000000000000000 height=000000 version=0x00000000 log0_work=00.000000 tx=000000000 date='0000-00-00T00:00:00Z' progress=0.000000 cache=000.0MiB(0000000txo)
  0000-00-00T00:00:00Z UpdateTip: new best=0000000000000000000000000000000000000000000000000000000000000000 height=000000 version=0x00000000 log0_work=00.000000 tx=000000000 date='0000-00-00T00:00:00Z' progress=0.000000 cache=000.0MiB(0000000txo)
  0000-00-00T00:00:00Z UpdateTip: new best=0000000000000000000000000000000000000000000000000000000000000000 height=000000 version=0x00000000 log0_work=00.000000 tx=000000000 date='0000-00-00T00:00:00Z' progress=0.000000 cache=000.0MiB(0000000txo)
  0000-00-00T00:00:00Z UpdateTip: new best=0000000000000000000000000000000000000000000000000000000000000000 height=000000 version=0x00000000 log0_work=00.000000 tx=000000000 date='0000-00-00T00:00:00Z' progress=0.000000 cache=000.0MiB(0000000txo)
  ```

  I find the latter alternative much easier to visually scan for anomalies (and more aesthetically pleasing TBH!).

  Non-GUI users deserve nice interfaces too :)

ACKs for top commit:
  laanwj:
    ACK 25f899cc23

Tree-SHA512: 5970798c41b041527ebdcbd843c5e136c257c28c3b21fc74102da8970406ca5c0c7e406305c5e6e67de5c1708dc1858af07a77a2e05f44159b7103423e8ab32f
2021-02-11 19:58:20 +01:00
MarcoFalke
8e1913ae02
Merge #21062: refactor: return MempoolAcceptResult from ATMP
53e716ea11 [refactor] improve style for touched code (gzhao408)
174cb5330a [refactor] const ATMPArgs and non-const Workspace (gzhao408)
f82baf0762 [refactor] return MempoolAcceptResult (gzhao408)
9db10a5506 [refactor] clean up logic in testmempoolaccept (gzhao408)

Pull request description:

  This is the first 4 commits of #20833, and does refactoring only. It should be relatively simple to review, and offers a few nice things:
  - It makes accessing values that don't make sense (e.g. fee) when the tx is invalid an error.
  - Returning `MempoolAcceptResult` from ATMP makes the interface cleaner. The caller can get a const instead of passing in a mutable "out" param.
  - We don't have to be iterating through a bunch of lists for package validation, we can just return a `std::vector<MempoolAcceptResult>`.
  - We don't have to refactor all ATMP call sites again if/when we want to return more stuff from it.

ACKs for top commit:
  MarcoFalke:
    ACK 53e716ea11 💿
  jnewbery:
    Code review ACK 53e716ea11
  ariard:
    Code Review ACK 53e716e, I did tweak a bit the touched paths to see if we had good test coverage. Didn't find holes.

Tree-SHA512: fa6ec324a08ad9e6e55948615cda324cba176255708bf0a0a0f37cedb7a75311aa334ac6f223be7d8df3c7379502b1081102b9589f9a9afa1713ad3d9ab3c24f
2021-02-11 14:45:41 +01:00
practicalswift
acd7980b37 log: Move "Leaving block file [...]: [...]" log message to debug category 2021-02-10 20:40:42 +00:00
gzhao408
53e716ea11 [refactor] improve style for touched code 2021-02-09 07:01:52 -08:00
gzhao408
174cb5330a [refactor] const ATMPArgs and non-const Workspace
ATMPArgs should contain const arguments for validation.
The Workspace should contain state that may change
throughout validation.
2021-02-09 07:01:52 -08:00
gzhao408
f82baf0762 [refactor] return MempoolAcceptResult
This creates a cleaner interface with ATMP, allows us to make results const,
and makes accessing values that don't make sense (e.g. fee when tx is
invalid) an error.
2021-02-09 07:01:52 -08:00
Carl Dong
20677ffa22 validation: Guard all chainstates with cs_main
Since these chainstates are:

1. Also vulnerable to the race condition described in the previous
   commit
2. Documented as having similar semantics as m_active_chainstate

we should also protect them with ::cs_main.
2021-02-01 22:09:03 -05:00
Wladimir J. van der Laan
44f4bcd302
Merge #20749: [Bundle 1/n] Prune g_chainman usage related to ::LookupBlockIndex
67c9a83df1 style-only: Remove redundant sentence in ActivateBestChain comment (Carl Dong)
b8e95658d5 style-only: Make TestBlockValidity signature readable (Carl Dong)
0cdad75390 validation: Use accessible chainstate in ChainstateManager::ProcessNewBlock (Carl Dong)
ea4fed9021 validation: Use existing chainstate in ChainstateManager::ProcessNewBlockHeaders (Carl Dong)
e0dc305727 validation: Move LoadExternalBlockFile to CChainState (Carl Dong)
5f8cd7b3a5 validation: Remove global ::ActivateBestChain (Carl Dong)
2a696472a1 validation: Pass in chainstate to ::NotifyHeaderTip (Carl Dong)
9c300cc8b3 validation: Pass in chainstate to TestBlockValidity (Carl Dong)
0e17c833cd validation: Make CChainState.m_blockman public (Carl Dong)
d363d06bf7 validation: Pass in blockman to ContextualCheckBlockHeader (Carl Dong)
f11d11600d validation: Move GetLastCheckpoint to BlockManager (Carl Dong)
e4b95eefbc validation: Move GetSpendHeight to BlockManager (Carl Dong)
b026e318c3 validation: Move FindForkInGlobalIndex to BlockManager (Carl Dong)
3664a150ac validation: Remove global LookupBlockIndex (Carl Dong)
eae54e6e60 scripted-diff: Use BlockManager::LookupBlockIndex (Carl Dong)
15d20f40e1 validation: Move LookupBlockIndex to BlockManager (Carl Dong)
f92dc6557a validation: Guard the active_chainstate with cs_main (Carl Dong)

Pull request description:

  Overall PR: #20158 (tree-wide: De-globalize ChainstateManager)

  Note to reviewers:
  1. This bundle may _apparently_ introduce usage of `g_chainman` or `::Chain(state|)Active()` globals, but these are resolved later on in the overall PR. [Commits of overall PR](https://github.com/bitcoin/bitcoin/pull/20158/commits)
  2. There may be seemingly obvious local references to `ChainstateManager` or other validation objects which are not being used in callers of the current function in question, this is done intentionally to **_keep each commit centered around one function/method_** to ease review and to make the overall change systematic. We don't assume anything about our callers. Rest assured that once we are considering that particular caller in later commits, we will use the obvious local references. [Commits of overall PR](https://github.com/bitcoin/bitcoin/pull/20158/commits)
  3. When changing a function/method that has many callers (e.g. `LookupBlockIndex` with 55 callers), it is sometimes easier (and less error-prone) to use a scripted-diff. When doing so, there will be 3 commits in sequence so that every commit compiles like so:
  1. Add `new_function`, make `old_function` a wrapper of `new_function`, divert all calls to `old_function` to `new_function` **in the local module only**
  2. Scripted-diff to divert all calls to `old_function` to `new_function` **in the rest of the codebase**
  3. Remove `old_function`

ACKs for top commit:
  jnewbery:
    utACK 67c9a83df1
  laanwj:
    re-ACK 67c9a83df1
  ryanofsky:
    Code review ACK 67c9a83df1. Changes since last review:

Tree-SHA512: 8744aba2dd57a40cd2fedca809b0fe24d771bc60da1bffde89601999384aa0df428057a86644a3f72fbeedbc8b04db6c4fd264ea0db2e73c279e5acc6d056cbf
2021-02-01 13:09:46 +01:00
MarcoFalke
87394b6741
Merge #20868: validation: remove redundant check on pindex
c943282b5e validation: remove redundant check on pindex (jarolrod)

Pull request description:

  This removes a redundant check on `pindex` being a `nullptr`. By the time we get to this step `pindex` is always a `nullptr` as the branch where it has been set would have already returned.

  Closes #19223

ACKs for top commit:
  Zero-1729:
    re-ACK c943282
  ajtowns:
    ACK c943282b5e - code review only
  MarcoFalke:
    review ACK c943282b5e 📨
  theStack:
    re-ACK c943282b5e

Tree-SHA512: d2dc58206be61d2897b0703ee93af67abed492a80e84ea03dcfbf7116833173da3bdafa18ff80422d5296729d5254d57cc1db03fdaf817c8f57c62c3abef673c
2021-02-01 10:56:23 +01:00
Carl Dong
b8e95658d5 style-only: Make TestBlockValidity signature readable 2021-01-28 14:15:26 -05:00
Carl Dong
0cdad75390 validation: Use accessible chainstate in ChainstateManager::ProcessNewBlock
[META] This commit should be followed up by removing the comments and
       assertions meant only to show that the change is correct.
2021-01-28 14:15:26 -05:00
Carl Dong
ea4fed9021 validation: Use existing chainstate in ChainstateManager::ProcessNewBlockHeaders
[META] This commit should be followed up by removing the comments and
       assertions meant only to show that the change is correct.
2021-01-28 14:15:26 -05:00
Carl Dong
e0dc305727 validation: Move LoadExternalBlockFile to CChainState
[META] This commit should be followed up by removing the comments and
       assertions meant only to show that the change is correct.

LoadExternalBlockFile mainly acts on CChainState.
2021-01-28 14:15:26 -05:00
Carl Dong
5f8cd7b3a5 validation: Remove global ::ActivateBestChain
Instead use CChainState::ActivateBestChain, which is what the global one
calls anyway.
2021-01-28 14:15:26 -05:00
Carl Dong
2a696472a1 validation: Pass in chainstate to ::NotifyHeaderTip
[META] This commit should be followed up by removing the comments and
       assertions meant only to show that the change is correct.
2021-01-28 14:15:26 -05:00
Carl Dong
9c300cc8b3 validation: Pass in chainstate to TestBlockValidity
[META] This commit should be followed up by removing the comments and
       assertions meant only to show that the change is correct.
2021-01-28 14:15:26 -05:00
Carl Dong
0e17c833cd validation: Make CChainState.m_blockman public 2021-01-28 14:15:26 -05:00
Carl Dong
d363d06bf7 validation: Pass in blockman to ContextualCheckBlockHeader
[META] This commit should be followed up by removing the comments and
       assertions meant only to show that the change is correct.
2021-01-28 14:15:26 -05:00
Carl Dong
f11d11600d validation: Move GetLastCheckpoint to BlockManager
[META] This commit should be followed up by removing the comments and
       assertions meant only to show that the change is correct.

GetLastCheckPoint mainly acts on BlockManager.
2021-01-28 14:15:26 -05:00
Carl Dong
e4b95eefbc validation: Move GetSpendHeight to BlockManager
[META] This commit should be followed up by removing the comments and
       assertions meant only to show that the change is correct.

GetSpendHeight only acts on BlockManager.
2021-01-28 14:15:26 -05:00
Carl Dong
b026e318c3 validation: Move FindForkInGlobalIndex to BlockManager
[META] This commit should be followed up by removing the comments and
       assertions meant only to show that the change is correct.

FindForkInGlobalIndex only acts on BlockManager.

Note to reviewers: Since FindForkInGlobalIndex is always called with
::ChainActive() as its first parameter, it is possible to move
FindForkInGlobalIndex to CChainState and remove this const CChain&
parameter to instead use m_chain. However, it seems like the original
intention was for FindForkInGlobalIndex to work with _any_ chain, not
just the current active chain. Let me know if this should be changed.
2021-01-28 14:15:26 -05:00
Carl Dong
3664a150ac validation: Remove global LookupBlockIndex 2021-01-28 14:15:26 -05:00
Carl Dong
15d20f40e1 validation: Move LookupBlockIndex to BlockManager
[META] This commit should be followed up by a scripted-diff commit which
       fixes calls to LookupBlockIndex tree-wide.
[META] This commit should be followed up by removing the comments and
       assertions meant only to show that the change is correct.

LookupBlockIndex only acts on BlockManager.
2021-01-28 14:15:26 -05:00
Carl Dong
f92dc6557a validation: Guard the active_chainstate with cs_main
This avoids a potential race-condition where a thread is reading the
ChainstateManager::m_active_chainstate pointer while another one is
writing to it. There is no portable guarantee that reading/writing the
pointer is thread-safe.

This is also done in way that mimics ::ChainstateActive(), so the
transition from that function to this method is easy.

More discussion:
1. https://github.com/bitcoin/bitcoin/pull/20749#discussion_r559544027
2. https://github.com/bitcoin/bitcoin/pull/19806#discussion_r561023961
3. https://github.com/bitcoin/bitcoin/pull/19806#issuecomment-768946522
4. https://github.com/bitcoin/bitcoin/pull/19806#issuecomment-768955695
2021-01-28 14:14:22 -05:00
Wladimir J. van der Laan
b386d37360
Merge #18710: Add local thread pool to CCheckQueue
bb6fcc75d1 refactor: Drop boost::thread stuff in CCheckQueue (Hennadii Stepanov)
6784ac471b bench: Use CCheckQueue local thread pool (Hennadii Stepanov)
dba30695fc test: Use CCheckQueue local thread pool (Hennadii Stepanov)
01511776ac Add local thread pool to CCheckQueue (Hennadii Stepanov)
0ef938685b refactor: Use member initializers in CCheckQueue (Hennadii Stepanov)

Pull request description:

  This PR:
  - gets rid of `boost::thread_group` in the `CCheckQueue` class
  - allows thread safety annotation usage in the `CCheckQueue` class
  - is alternative to #14464 (https://github.com/bitcoin/bitcoin/pull/18710#issuecomment-616618525, https://github.com/bitcoin/bitcoin/pull/18710#issuecomment-617291612)

  Also, with this PR (I hope) it could be easier to resurrect a bunch of brilliant ideas from #9938.

  Related: #17307

ACKs for top commit:
  laanwj:
    Code review ACK bb6fcc75d1
  LarryRuane:
    ACK bb6fcc75d1
  jonatack:
    Code review ACK bb6fcc75d1 and verified rebase to master builds cleanly with unit/functional tests green

Tree-SHA512: fddeb720d5a391b48bb4c6fa58ed34ccc3f57862fdb8e641745c021841c8340e35c5126338271446cbd98f40bd5484f27926aa6c3e76fa478ba1efafe72e73c1
2021-01-25 20:21:19 +01:00
jarolrod
c943282b5e validation: remove redundant check on pindex
This removes a conditional that checks if pindex is equal to nullptr.
This check is redundant because the branch where pindex is set returns at an earlier time. Additionaly, The independence of the earlier and later pindex is made clearer.
2021-01-13 11:22:06 -05:00
gzhao408
2f463f57e3 [doc] for CheckInputsFromMempoolAndCache 2021-01-12 02:27:09 -08:00
gzhao408
85cc6bed64 lock annotations for MemPoolAccept functions
We should already have the mempool lock when entering
CheckInputsFromMempoolAndCache
2021-01-12 02:27:09 -08:00
MarcoFalke
f13e03cda2
Merge #20584: Declare de facto const reference variables/member functions as const
31b136e580 Don't declare de facto const reference variables as non-const (practicalswift)
1c65c075ee Don't declare de facto const member functions as non-const (practicalswift)

Pull request description:

  _Meta: This is the second and final part of the `const` refactoring series (part one: #20581). **I promise: no more refactoring PRs from me in a while! :)** I'll now go back to focusing on fuzzing/hardening!_

  Changes in this PR:
  * Don't declare de facto const member functions as non-const
  * Don't declare de facto const reference variables as non-const

  Awards for finding candidates for the above changes go to:
  * `clang-tidy`'s [`readability-make-member-function-const`](https://clang.llvm.org/extra/clang-tidy/checks/readability-make-member-function-const.html)  check ([list of `clang-tidy` checks](https://clang.llvm.org/extra/clang-tidy/checks/list.html))
  * `cppcheck`'s `constVariable` check ([list of `cppcheck` checks](https://sourceforge.net/p/cppcheck/wiki/ListOfChecks/))

  See #18920 for instructions on how to analyse Bitcoin Core using Clang Static Analysis, `clang-tidy` and `cppcheck`.

ACKs for top commit:
  ajtowns:
    ACK 31b136e580
  jonatack:
    ACK 31b136e580
  theStack:
    ACK 31b136e580 ❄️

Tree-SHA512: f58f8f00744219426874379e9f3e9331132b9b48e954d24f3a85cbb858fdcc98009ed42ef7e7b4619ae8af9fc240a6d8bfc1c438db2e97b0ecd722a80dcfeffe
2021-01-07 09:05:09 +01:00
Amiti Uttarwar
7ff05358a9 [mempool] Remove error suppression on upgrade
In 0.21, we added unbroadcast txids to mempool.dat. Commit 9c8a55d
added a try-block to prevent throwing a "failed to deserialize mempool data"
error when a user upgrades from 0.21 to 0.22. This exception handling is no
longer useful, so now we can remove it.
2021-01-04 12:02:29 -08:00
MarcoFalke
03b1db6114
Merge #18766: Disable fee estimation in blocksonly mode (by removing the fee estimates global)
4e28753f60 feestimator: encapsulate estimation file logic (Antoine Poinsot)
e8ea6ad9c1 init: don't create a CBlockPolicyEstimator if we don't relay transactions (Antoine Poinsot)
86ff2cf202 Remove the remaining fee estimation globals (Antoine Poinsot)
03bfeee957 interface: remove unused estimateSmartFee method from node (Antoine Poinsot)

Pull request description:

  If the `blocksonly` mode is turned on after running with transaction
  relay enabled for a while, the fee estimation will serve outdated data
  to both the internal wallet and to external applications that might be
  feerate-sensitive and make use of `estimatesmartfee` (for example a
  Lightning Network node).

  This has already caused issues (for example https://github.com/bitcoin/bitcoin/issues/16840 (C-lightning), or https://github.com/lightningnetwork/lnd/issues/2562 (LND)) and it seems prudent to fail rather than to give inaccurate values.

  This fixes #16840, and closes #16890 which tried to fix the symptoms (RPC) but not the cause as mentioned by sdaftuar :
  > If this is a substantial problem, then I would think we should take action to protect our own wallet users as well (rather than hide the results of what our fee estimation would do!).

ACKs for top commit:
  MarcoFalke:
    re-ACK 4e28753f60 👋
  jnewbery:
    utACK 4e28753f60

Tree-SHA512: c869cf03b86d8194002970bbc84662dae76874967949b9be0d9a4511a1eabcb1627c38aca3154da9dcece1a4c49ec02bd4f9fcca2ec310986e07904559e63ba8
2020-12-07 12:59:48 +01:00