MockableDatabase is a WalletDatabase that allows us to interact with the
records to change them independently from the wallet, as well as
changing the return values from within the tests. This will give us
greater flexibility in testing the wallet.
This is cleanup that doesn't change external behavior.
- Removes awkward `StringMap` intermediate representation
- Simplifies CWallet code, deals with used address and received request
serialization in walletdb.cpp
- Adds test coverage and documentation
- Reduces memory usage
This PR doesn't change externally observable behavior. Internally, only change
in behavior is that EraseDestData deletes directly from database because the
`StringMap` is gone. This is more direct and efficient because it uses a single
btree lookup and scan instead of multiple lookups
Motivation for this cleanup is making changes like #18550, #18192, #13756
easier to reason about and less likely to result in unintended behavior and
bugs
Co-authored-by: furszy <matiasfurszyfer@protonmail.com>
The previous behavior for getAvailableBalance when coin control
has selected coins was to return the sum of them. Instead, we
are currently returning the wallet's available total balance minus
the selected coins total amount.
This turns into a GUI-only issue for the "use available balance"
button when the user manually select coins in the send screen.
Reason:
We missed to update the GetAvailableBalance function to include
the coin control selected coins on #25685.
Context:
Since #25685 we skip the selected coins inside `AvailableCoins`,
the reason is that there is no need to traverse the wallet's
txes map just to get coins that can directly be fetched by
their id.
4aebd832a4 db: Change DatabaseCursor::Next to return status enum (Andrew Chow)
d79e8dcf29 wallet: Have cursor users use DatabaseCursor directly (Andrew Chow)
7a198bba0a wallet: Introduce DatabaseCursor RAII class for managing cursor (Andrew Chow)
69efbc011b Move SafeDbt out of BerkeleyBatch (Andrew Chow)
Pull request description:
Instead of having database cursors be tied to a particular `DatabaseBatch` object and requiring its setup and teardown be separate functions in that batch, we can have cursors be separate RAII classes. This makes it easier to create and destroy cursors as well as having cursors that have slightly different behaviors.
Additionally, since reading data from a cursor is a tri-state, this PR changes the return value of the `Next` function (formerly `ReadAtCursor`) to return an Enum rather than the current system of 2 booleans. This greatly simplifies and unifies the code that deals with cursors as now there is no confusion as to what the function returns when there are no records left to be read.
Extracted from #24914
ACKs for top commit:
furszy:
diff ACK 4aebd83
theStack:
Code-review ACK 4aebd832a4
Tree-SHA512: 5d0be56a18de5b08c777dd5a73ba5a6ef1e696fdb07d1dca952a88ded07887b7c5c04342f9a76feb2f6fe24a45dc31f094f1f5d9500e6bdf4a44f4edb66dcaa1
f2fc03ec85 refactor: use braced init for integer constants instead of c style casts (Pasta)
Pull request description:
See https://github.com/bitcoin/bitcoin/pull/23810 for more context. This is broken out from that PR, as it is less breaking, and should be trivial to review and merge.
EDIT: Long term, the intention is to remove all C-style casts, as they can dangerously introduce reinterpret_casts. This is one step which removes a number of trivially removable C-style casts
ACKs for top commit:
aureleoules:
ACK f2fc03ec85
Tree-SHA512: 2fd11b92c9147e3f970ec3e130e3b3dce70e707ff02950a8c697d4b111ddcbbfa16915393db20cfc8f384bc76f13241c9b994a187987fcecd16a61f8cc0af14c
55696a0ac3 wallet: remove `mempool_sequence` from `transactionRemovedFromMempool` (w0xlt)
bf19069c53 wallet: remove `mempool_sequence` from `transactionAddedToMempool` (w0xlt)
Pull request description:
This PR removes `mempool_sequence` from `transactionRemovedFromMempool` and `transactionAddedToMempool`.
`mempool_sequence` is not used in these methods, only in ZMQ notifications.
ACKs for top commit:
instagibbs:
ACK 55696a0ac3
Tree-SHA512: 621e89230bcb6edfed83e2758601a2b093822fc2dc4e9bfb00487e340f2bc4c5ac3bf6df3ca00b7fe55bb3df15858820f2bf698f403d2e48b915dd9eb47b63e0
9622fe64b8 test: move coins result test to wallet_tests.cpp (furszy)
f69347d058 test: extend and simplify availablecoins_tests (furszy)
212ccdf2c2 wallet: AvailableCoins, add arg to include/skip locked coins (furszy)
Pull request description:
Negative PR with extended test coverage :).
1) Cleaned duplicated code and added coverage for the 'AvailableCoins' incremental result.
2) The class `AvailableCoinsTestingSetup` inside `availablecoins_tests.cpp` is a plain copy
of `ListCoinsTestingSetup` that is inside `wallet_tests.cpp`.
So, deleted the file and moved the `BasicOutputTypesTest` test case to `wallet_tests.cpp`.
3) Added arg to include/skip locked coins from the `AvailableCoins` result. This is needed for point (1) as otherwise the wallet will spend the coins that we recently created due its closeness to the recipient amount.
Note: this last point comes from #25659 where I'm using the same functionality to clean/speedup another flow as well.
ACKs for top commit:
achow101:
ACK 9622fe64b8
theStack:
ACK 9622fe64b8
aureleoules:
reACK 9622fe64b8, nice cleanup!
Tree-SHA512: 1ed9133120bfe8815455d1ad317bb0ff96e11a0cc34ee8098716ab9b001749168fa649212b2fa14b330c1686cb1f29039ff1f88ae306db68881b0428c038f388
Next()'s result is a tri-state - failed, more to go, complete. Replace
the way that this is returned with an enum with values FAIL, MORE, and
DONE rather than with two booleans.
Instead of having DatabaseBatch deal with opening and closing database
cursors, have a separate RAII class that deals with those.
For now, DatabaseBatch manages DatabaseCursor, but this will change
later.
8cd21bb279 refactor: improve readability for AttemptSelection (josibake)
f47ff71761 test: only run test for descriptor wallets (josibake)
0760ce0b9e test: add missing BOOST_ASSERT (josibake)
db09aec937 wallet: switch to new shuffle, erase, push_back (josibake)
b6b50b0f2b scripted-diff: Uppercase function names (josibake)
3f27a2adce refactor: add new helper methods (josibake)
f5649db9d5 refactor: add UNKNOWN OutputType (josibake)
Pull request description:
This PR is to address follow-ups for #24584, specifically:
* Remove redundant, hard-to-read code by adding a new `OutputType` and adding shuffle, erase, and push_back methods for `CoinsResult`
* Add missing `BOOST_ASSERT` to unit test
* Ensure functional test only runs if using descriptor wallets
* Improve readability of `AttemptSelection` by removing triple-nested if statement
Note for reviewers: commit `refactor: add new helper methods` should throw an "unused function warning"; the function is used in the next commit. Also, commit `wallet: switch to new shuffle, erase, push_back` will fail to compile, but this is fixed in the next commit with a scripted-diff. the commits are separate like this (code change then scripted-diff) to improve legibility.
ACKs for top commit:
achow101:
ACK 8cd21bb279
aureleoules:
ACK 8cd21bb279.
LarryRuane:
Concept, code review ACK 8cd21bb279
furszy:
utACK 8cd21bb2. Left a small, non-blocking, comment.
Tree-SHA512: a1bbc5962833e3df4f01a4895d8bd748cc4c608c3f296fd94e8afd8797b8d2e94e7bd44d598bd76fa5c9f5536864f396fcd097348fa0bb190a49a86b0917d60e
This is a refactor, putting the burden to think about thread safety to
the caller. Otherwise, there is a risk that the caller will assume
thread safety where none exists, as is evident in the previous two
commits.
bc886fcb31 Change mapWallet to be a std::unordered_map (Andrew Chow)
272356024d Change getWalletTxs to return a set instead of a vector (Andrew Chow)
97532867cf Change mapTxSpends to be a std::unordered_multimap (Andrew Chow)
1f798fe85b wallet: Cache SigningProviders (Andrew Chow)
8a105ecd1a wallet: Use CalculateMaximumSignedInputSize to indicate solvability (Andrew Chow)
Pull request description:
While running my coin selection simulations, I noticed that towards the end of the simulation, the wallet would become slow to make new transactions. The wallet generally performs much more slowly when there are a large number of transactions and/or a large number of keys. The improvements here are focused on wallets with a large number of transactions as that is what the simulations produce.
Most of the slowdown I observed was due to `DescriptorScriptPubKeyMan::GetSigningProvider` re-deriving keys every time it is called. To avoid this, it will now cache the `SigningProvider` produced so that repeatedly fetching the `SigningProvider` for the same script will not result in the same key being derived over and over. This has a side effect of making the function non-const, which makes a lot of other functions non-const as well. This helps with wallets with lots of address reuse (as my coin selection simulations are), but not if addresses are not reused as keys will end up needing to be derived the first time `GetSigningProvider` is called for a script.
The `GetSigningProvider` problem was also exacerbated by unnecessarily fetching a `SigningProvider` for the same script multiple times. A `SigningProvider` is retrieved to be used inside of `IsSolvable`. A few lines later, we use `GetTxSpendSize` which fetches a `SigningProvider` and then calls `CalculateMaximumSignedInputSize`. We can avoid a second call to `GetSigningProvider` by using `CalculateMaximumSignedInputSize` directly with the `SigningProvider` already retrieved for `IsSolvable`.
There is an additional slowdown where `ProduceSignature` with a dummy signer is called twice for each output. The first time is `IsSolvable` checks that `ProduceSignature` succeeds, thereby informing whether we have solving data. The second is `CalculateMaximumSignedInputSize` which returns -1 if `ProduceSignature` fails, and returns the input size otherwise. We can reduce this to one call of `ProduceSignature` by using `CalculateMaximumSignedInputSize`'s result to set `solvable`.
Lastly, a lot of time is spent looking in `mapWallet` and `mapTxSpends` to determine whether an output is already spent. The performance of these lookups is slightly improved by changing those maps to use `std::unordered_map` and `std::unordered_multimap` respectively.
ACKs for top commit:
Xekyo:
ACK bc886fcb31
furszy:
diff re-reACK bc886fcb
Tree-SHA512: fd710fe1224ef67d2bb83d6ac9e7428d9f76a67f14085915f9d80e1a492d2c51cb912edfcaad1db11c2edf8d2d97eb7ddd95bfb364587fb1f143490fd72c9ec1
Rename `BResult` class to `util::Result` and update the class interface to be
more compatible with `std::optional` and with a full-featured result class
implemented in https://github.com/bitcoin/bitcoin/pull/25665. Motivation for
this change is to update existing `BResult` usages now so they don't have to
change later when more features are added in #25665.
This change makes the following improvements originally implemented in #25665:
- More explicit API. Drops potentially misleading `BResult` constructor that
treats any bilingual string argument as an error. Adds `util::Error`
constructor so it is never ambiguous when a result is being assigned an error
or non-error value.
- Better type compatibility. Supports `util::Result<bilingual_str>` return
values to hold translated messages which are not errors.
- More standard and consistent API. `util::Result` supports most of the same
operators and methods as `std::optional`. `BResult` had a less familiar
interface with `HasRes`/`GetObj`/`ReleaseObj` methods. The Result/Res/Obj
naming was also not internally consistent.
- Better code organization. Puts `src/util/` code in the `util::` namespace so
naming reflects code organization and it is obvious where the class is coming
from. Drops "B" from name because it is undocumented what it stands for
(bilingual?)
- Has unit tests.
9e04cfaa76 test: add coverage for wallet inconsistent state during sync (furszy)
77de5c693f wallet: guard and alert about a wallet invalid state during chain sync (furszy)
Pull request description:
Follow-up work to my comment in #25239.
Guarding and alerting the user about a wallet invalid state during chain synchronization.
#### Explanation
if the `AddToWallet` tx write fails, the method returns a wtx `nullptr` without removing the recently added transaction from the wallet's map.
Which makes that `AddToWalletIfInvolvingMe` return false (even when the tx is on the wallet's map already), --> which makes `SyncTransaction` skip the `MarkInputsDirty` call --> which leads to a wallet invalid state where the inputs of this new transaction are not marked dirty, while the transaction that spends them still exist on the in-memory wallet tx map.
Plus, as we only store the arriving transaction inside `AddToWalletIfInvolvingMe` when we synchronize/scan block/s from the chain and nowhere else, it makes sense to treat the transaction db write error as a runtime error to notify the user about the problem. Otherwise, the user will lose all the not stored transactions after a wallet shutdown (without be able to recover them automatically on the next startup because the chain sync would be above the block where the txs arrived).
Note:
On purpose, the first commit adds test coverage for it. Showing how the wallet can end up in an invalid state. The second commit corrects it with the proposed solution.
ACKs for top commit:
achow101:
re-ACK 9e04cfaa76
jonatack:
ACK 9e04cfaa76
Tree-SHA512: 81f765eca40547d7764833d8ccfae686b67c7728c84271bc00dc51272de643dafc270014079dcc9727b47577ba67b340aeb5f981588b54e69a06abea6958aa96
71d1d13627 test: add unit test for AvailableCoins (josibake)
da03cb41a4 test: functional test for new coin selection logic (josibake)
438e04845b wallet: run coin selection by `OutputType` (josibake)
77b0707206 refactor: use CoinsResult struct in SelectCoins (josibake)
2e67291ca3 refactor: store by OutputType in CoinsResult (josibake)
Pull request description:
# Concept
Following https://github.com/bitcoin/bitcoin/pull/23789, Bitcoin Core wallet will now generate a change address that matches the payment address type. This improves privacy by not revealing which of the outputs is the change at the time of the transaction in scenarios where the input address types differ from the payment address type. However, information about the change can be leaked in a later transaction. This proposal attempts to address that concern.
## Leaking information in a later transaction
Consider the following scenario:
1. Alice has a wallet with bech32 type UTXOs and pays Bob, who gives her a P2SH address
2. Alice's wallet generates a P2SH change output, preserving her privacy in `txid: a`
3. Alice then pays Carol, who gives her a bech32 address
4. Alice's wallet combines the P2SH UTXO with a bech32 UTXO and `txid: b` has two bech32 outputs
From a chain analysis perspective, it is reasonable to infer that the P2SH input in `txid: b` was the change from `txid: a`. To avoid leaking information in this scenario, Alice's wallet should avoid picking the P2SH output and instead fund the transaction with only bech32 Outputs. If the payment to Carol can be funded with just the P2SH output, it should be preferred over the bech32 outputs as this will convert the P2SH UTXO to bech32 UTXOs via the payment and change outputs of the new transaction.
**TLDR;** Avoid mixing output types, spend non-default `OutputTypes` when it is economical to do so.
# Approach
`AvailableCoins` now populates a struct, which makes it easier to access coins by `OutputType`. Coin selection tries to find a funding solution by each output type and chooses the most economical by waste metric. If a solution can't be found without mixing, coin selection runs over the entire wallet, allowing mixing, which is the same as the current behavior.
I've also added a functional test (`test/functional/wallet_avoid_mixing_output_types.py`) and unit test (`src/wallet/test/availablecoins_tests.cpp`.
ACKs for top commit:
achow101:
re-ACK 71d1d13627
aureleoules:
ACK 71d1d13627.
Xekyo:
reACK 71d1d13627 via `git range-diff master 6530d19 71d1d13`
LarryRuane:
ACK 71d1d13627
Tree-SHA512: 2e0716efdae5adf5479446fabc731ae81d595131d3b8bade98b64ba323d0e0c6d964a67f8c14c89c428998bda47993fa924f3cfca1529e2bd49eaa4e31b7e426
47ea70fbb8 wallet: clean AllInputsMine code, use InputIsMine internally (furszy)
bf310b0e8c wallet: clean InputIsMine code, use GetWalletTx (furszy)
0cb177263c wallet: unify CachedTxGetImmatureCredit and CachedTxGetImmatureWatchOnlyCredit (furszy)
04c6423f7b wallet: remove always true 'fUseCache' arg from CachedTxGetAvailableCredit (furszy)
4f0ca9bff6 wallet: remove always false 'recalculate' arg from GetCachableAmount (furszy)
47b1012677 wallet: remove always true 'fUseCache' from CachedTxGetImmatureWatchOnlyCredit (furszy)
da8f62de2c wallet: remove always true 'fUseCache' from CachedTxGetImmatureCredit (furszy)
Pull request description:
Another wallet's code garbage collector work. Part of the `mapWallet` encapsulation goal.
Focused on the following points:
1) Remove always true `fUseCache` argument from `CachedTxGetImmatureCredit`, `CachedTxGetImmatureWatchOnly` and `CachedTxGetAvailableCredit`.
2) Remove always false `recalculate` argument from `GetCachableAmount`.
3) Merge `CachedTxGetImmatureCredit` and `CachedTxGetImmatureWatchOnlyCredit` as they do share the exact same code.
4) Clean `InputIsMine` method; use `GetWalletTx` instead of access the wallet's map directly.
5) Clean `AllInputsMine` method; use `InputIsMine` instead of duplicate the exact same code internally.
ACKs for top commit:
aureleoules:
re-ACK 47ea70fbb8
achow101:
ACK 47ea70fbb8
theStack:
re-ACK 47ea70fbb8
Tree-SHA512: e9b64b57de7be6165c5e5552e28cd8a03d4736b0a3707d29d129e3a0a3db6a855c2abf47a24917236060835a297b564a97b66d4c8b178d6bdafb93a12a7c0b40
1be7964189 test, wallet: Add mempool rescan test for import RPCs (Fabian Jahr)
833ce76df7 rpc, wallet: Document mempool rescan after importdescriptor, importwallet (Fabian Jahr)
0e396d1ba7 rpc, wallet: Document mempool scan after importmulti (Fabian Jahr)
e6d3ef8586 rpc, wallet: Document mempool scan after importpubkey (Fabian Jahr)
6d3db52e66 rpc, wallet: Document and test mempool scan after importprivkey (João Barbosa)
3abdbbb90a rpc, wallet: Document and test mempool scan after importaddress (João Barbosa)
236239bd40 wallet: Rescan mempool for transactions as well (Fabian Jahr)
Pull request description:
This PR picks up the work from #18964 and closes #18954.
It should incorporate all the unaddressed feedback from the PR:
- Mempool rescan now expanded to all relevant import* RPCs
- Added documentation in the help of each RPC
- More tests
ACKs for top commit:
Sjors:
re-utACK 1be7964189 (only a test change)
achow101:
ACK 1be7964189
w0xlt:
reACK 1be7964189
Tree-SHA512: b62fed5f97c6c242b2af417b41c9696a1f18878483d9e1c9429791f9c05257f57a00540a9a84df23c49faf6a61c3109c22972de81540083f38b506217804fcc5
When a transaction arrives, the wallet mark its inputs (prev-txs) as dirty.
Clearing the wallet transaction cache, triggering a balance recalculation.
If this does not happen due a db write error during `AddToWallet`, the wallet
will be in an invalid state: The transaction that spends certain wallet UTXO will
exist inside the in-memory wallet tx map, having the credit/debit calculated,
while its inputs will still have the old cached data (like if them were never
spent).
111ea3ab71 wallet: refactor GetNewDestination, use BResult (furszy)
22351725bc send: refactor CreateTransaction flow to return a BResult<CTransactionRef> (furszy)
198fcca162 wallet: refactor, include 'FeeCalculation' inside 'CreatedTransactionResult' (furszy)
7a45c33d1f Introduce generic 'Result' class (furszy)
Pull request description:
Based on a common function signature pattern that we have all around the sources:
```cpp
bool doSomething(arg1, arg2, arg3, arg4, &result_obj, &error_string) {
// do something...
if (error) {
error_string = "something bad happened";
return false;
}
result = goodResult;
return true;
}
```
Introduced a generic class `BResult` that encapsulate the function boolean result, the result object (in case of having it) and, in case of failure, the string error reason.
Obtaining in this way cleaner function signatures and removing boilerplate code:
```cpp
BResult<Obj> doSomething(arg1, arg2, arg3, arg4) {
// do something...
if (error) return "something bad happened";
return goodResult;
}
```
Same cleanup applies equally to the function callers' side as well. There is no longer need to add the error string and the result object declarations before calling the function:
Before:
```cpp
Obj result_obj;
std::string error_string;
if (!doSomething(arg1, arg2, arg3, arg4, result_obj, error_string)) {
LogPrintf("Error: %s", error_string);
}
return result_obj;
```
Now:
```cpp
BResult<Obj> op_res = doSomething(arg1, arg2, arg3, arg4);
if (!op_res) {
LogPrintf("Error: %s", op_res.GetError());
}
return op_res.GetObjResult();
```
### Initial Implementation:
Have connected this new concept to two different flows for now:
1) The `CreateTransaction` flow. --> 7ba2b87c
2) The `GetNewDestination` flow. --> bcee0912
Happy note: even when introduced a new class into the sources, the amount of lines removed is almost equal to added ones :).
Extra note: this work is an extended version (and a decoupling) of the work that is inside #24845 (which does not contain the `GetNewDestination` changes nor the inclusion of the `FeeCalculation` field inside `CreatedTransactionResult`).
ACKs for top commit:
achow101:
ACK 111ea3ab71
w0xlt:
reACK 111ea3ab71
theStack:
re-ACK 111ea3ab71
MarcoFalke:
review ACK 111ea3ab71🎏
Tree-SHA512: 6d84d901a4cb923727067f25ff64542a40edd1ea84fdeac092312ac684c34e3688a52ac5eb012717d2b73f4cb742b9d78e458eb0e9cb9d6d72a916395be91f69
230a2f4cc3 wallet test: Add unit test for wallet scan save_progress option (Ryan Ofsky)
a89ddfbe22 wallet: Save wallet scan progress (w0xlt)
Pull request description:
Currently, the wallet scan progress is not saved.
If it is interrupted, it will be necessary to start from scratch on the next load.
This PR changes this and the progress is saved right after checking a block.
Close https://github.com/bitcoin/bitcoin/issues/25010
ACKs for top commit:
furszy:
re-ACK 230a2f4
achow101:
ACK 230a2f4cc3
ryanofsky:
Code review ACK 230a2f4cc3. Only change since last review is tweaking whitespace and adding log print
Tree-SHA512: 1a9dec207ed22b3443fb06a4daf967637bc02bcaf71c070b7dc33605d0cab959551e4014c9e92293a63f54c5cbcc98bb9f8844a8c60bc32a1482b1c4130fab32
Currently, the wallet scan progress is not saved.
If it is interrupted, it will be necessary to start from
scratch on the next load.
With this change, progress is saved every 60 seconds.
Co-authored-by: furszy <matiasfurszyfer@protonmail.com>
Co-authored-by: Jon Atack <jon@atack.com>
Co-authored-by: Ryan Ofsky <ryan@ofsky.org>
Instead of accepting a `vCoins` reference that is cleared at the beginning of the method.
Note:
This new struct, down the commits line, will contain other `AvailableCoins` useful results.
Previously in COutput, effective_value was initialized as the absolute
value of the txout, and fee as 0. effective_value along with fee were
calculated outside of the COutput constructor and set after the
object had been initialized. These changes will allow either the fee
or the feerate to be passed in a COutput constructor. If either are
provided, fee and effective_value are calculated and set in the
constructor. As a result, AvailableCoins also needs to be passed the
feerate when utxos are being spent. When balance is calculated or the
coins are being listed and feerate is neither available nor required,
AvailableCoinsListUnspent is used instead, which runs AvailableCoins
while providing the default value for feerate. Unit tests for the
calculation of effective value have also been added.
Too early NotifyWalletLoaded() call in CWallet::Create() results the
notification goes before DescriptorScriptPubKeyMans were created and
added to an encrypted wallet.
Co-authored-by: Andrew Chow <achow101-github@achow101.com>
049003fe68 coinselection: Remove COutput operators == and != (Andrew Chow)
f6c39c6adb coinselection: Remove CInputCoin (Andrew Chow)
70f31f1a81 coinselection: Use COutput instead of CInputCoin (Andrew Chow)
14fbb57b79 coinselection: Add effective value and fees to COutput (Andrew Chow)
f0821230b8 moveonly: move COutput to coinselection.h (Andrew Chow)
42e974e15c wallet: Remove CWallet and CWalletTx from COutput's constructor (Andrew Chow)
14d04d5ad1 wallet: Replace CWalletTx in COutput with COutPoint and CTxOut (Andrew Chow)
0ba4d1916e wallet: Provide input bytes to COutput (Andrew Chow)
d51f27d3bb wallet: Store whether a COutput is from the wallet (Andrew Chow)
b799814bbd wallet: Store tx time in COutput (Andrew Chow)
46022953ee wallet: Remove use_max_sig default value (Andrew Chow)
10379f007f scripted-diff: Rename COutput member variables (Andrew Chow)
c7c64db41e wallet: cleanup COutput constructor (Andrew Chow)
Pull request description:
While working on coin selection code, it occurred to me that `CInputCoin` is really a subset of `COutput` and the conversion of a `COutput` to a `CInputCoin` does not appear to be all that useful. So this PR adds fields that are present in `CInputCoin` to `COutput` and replaces the usage of `CInputCoin` with `COutput`.
`COutput` is also moved to coinselection.h. As part of this move, the usage of `CWalletTx` is removed from `COutput`. It is instead replaced by storing a `COutPoint` and the `CTxOut` rather than the entire `CWalletTx` as coin selection does not really need the full `CWalletTx`. The `CWalletTx` was only used for figuring out whether the transaction containing the output was from the current wallet, and for the transaction's time. These are now parameters to `COutput`'s constructor.
ACKs for top commit:
ryanofsky:
Code review ACK 049003fe68, just adding comments and removing == operators since last review
w0xlt:
reACK 049003f
Xekyo:
reACK 049003fe68
Tree-SHA512: 048b4cd620a0415e1d9fe8597257ee4bc64656566e1d28a9bdd147d6d72dc87c3f34a3339fa9ab6acf42c388df7901fc4ee900ccaabc3de790ffad162b544c15
39b1763730 Replace use of `ArgsManager` with `DatabaseOptions` (Kiminuo)
Pull request description:
Contributes to #21005.
The goal of this PR is to remove `gArgs` from database classes (i.e. `bdb.h` and `sqlite.h`) so that they can be tested without relying on `gArgs` in tests.
Notes:
* My goal is to enable unit-testing without relying on `gArgs` as much as possible. Global variables are hard to reason about which in turn makes it slightly harder to contribute to this codebase. When the compiler does the heavy lifting for us and allows us only to construct an object (or call a method) with valid parameters, we may also save some time in code reviews. The cost for this is passing an argument which is not for free but the cost is very miniscule compared to benefits, I think.
* GUI code is an exception because it seems fine to have `gArgs` there so I don't plan to make changes in `src/qt` folder, for example.
* My approach to removal of `gArgs` uses is moving from lower levels to upper ones and pass `ArgsManager` as an argument as needed. The approach is very similar to what #20158.
ACKs for top commit:
achow101:
ACK 39b1763730
ryanofsky:
Code review ACK 39b1763730. Just the two small ReadDatabaseArgs and Berkeley open changes that were discussed since the last review
Tree-SHA512: aa066b314db593e46c18698fe8cdd500f558b405dc04e4a9a3ff57b52b5b3a81a6cb090e0e661785d1d02c1bf18958c1f4cd715ff233aab63381e3f80960622d
Instead of having a pointer to the CWalletTx in COutput, we can just
store the COutPoint and the CTxOut as those are the only things we need
from the CWalletTx. Other things CWalletTx used to provide were time and
fIsFromMe but these are also being stored by COutput.
