2c0c6f4477 test: dedup file hashing using `sha256sum_file` helper (Sebastian Falbesoner)
Pull request description:
Rather than doing the open/read/hash-steps manually in the affected functional tests, we can just use the `sha256sum_file` helper from the utils module instead.
Note that for the tool_wallet.py test, the used hash is changed from sha1 to sha256, but as the only purpose is to detect file content changes, this doesn't matter. Also, the optimization using `memoryview` is overkill here, as the opened file has only a size of 24KiB and determining the hash via the helper doesn't take longer than a few hundred micro-seconds on my machine.
ACKs for top commit:
kristapsk:
ACK 2c0c6f4477
Tree-SHA512: 64fe21650b56a50e9f1a95f6ef27d88d8bfbb621e5be456f327ef8dbb5596b529d03976c200f3fd68da48cc427de9f257b403f3228e38cf1df918006674fac68
Rather than doing the open/read/hash-steps manually in the affected
functional tests, we can just use the `sha256sum_file` helper from the
utils module instead.
Note that for the tool_wallet.py test, the used hash is changed from
sha1 to sha256, but as the only purpose is to detect file content
changes, this doesn't matter. Also, the optimization using `memoryview`
is overkill here, as the opened file has only a size of 24KiB and
determining the hash doesn't take longer than a few hundred
micro-seconds on my machine.
This change improves the usability of the `dumptxoutset` RPC in two ways,
in the case that an invalid path is passed:
1. return from the RPC immediately, rather then when the file is first
tried to be written (which is _after_ calculating the UTXO set hash)
2. return a proper return code and error message instead of the cryptic
"CAutoFile::operator<<: file handle is nullptr: unspecified
iostream_category error" (-1)
ffd09281fe rpc: various fixups for dumptxoutset (James O'Beirne)
Pull request description:
This is part of the [assumeutxo project](https://github.com/bitcoin/bitcoin/projects/11) (parent PR: #15606)
---
A few fixes to make this RPC actually useful when generating snapshots.
- Generate an assumeutxo hash and display it (sort of a bugfix)
- Add nchaintx to output (necessary for use in chainparams entry)
- Add path of serialized UTXO file to output
ACKs for top commit:
laanwj:
Code review ACK ffd09281fe
Tree-SHA512: b0b5fd5138dea0e21258b1b18ab75bf3fd1628522cc1dbafa81af9cb9fa96562a1c39124fdb31057f256bfc560f462f907e9fe5e209b577b3f57afae2b7be826
- Actually generate an assumeutxo hash and display it
- Add nchaintx to output (necessary for use in chainparams entry)
- Add path of serialized UTXO file to output
The previous diff touched most files in ./test/, so bump the headers to
avoid having to touch them again for a bump later.
-BEGIN VERIFY SCRIPT-
./contrib/devtools/copyright_header.py update ./test/
-END VERIFY SCRIPT-
This value is no longer used and is instead specified statically
in chainparams. This change means that previously generated
snapshots will no longer be usable.
