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Implement BlockCache trait for FsBlockDb #1535

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Implement BlockCache trait for FsBlockDb #1535

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@Oscar-Pepper Oscar-Pepper commented Sep 11, 2024 •
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  • Implements Sync trait for BlockDb and FsBlockDb (trait bound for BlockCache trait)
  • Implements BlockCache for FsBlockDb
  • Scan_cached_blocks takes a BlockCache instead of BlockSource to solve issues with thread safety with callback and also update the sync engine to use only BlockCache trait methods
  • Changes fns and tests to async as a result of implementing Sync trait for BlockDb and FsBlockDb
  • implements BlockCache::read for BlockDb, neccessary for calling scan_cached_blocks

@Oscar-Pepper Oscar-Pepper mentioned this pull request Sep 11, 2024
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@Oscar-Pepper Oscar-Pepper marked this pull request as ready for review September 11, 2024 15:57
@Oscar-Pepper Oscar-Pepper marked this pull request as draft September 11, 2024 15:58
@Oscar-Pepper Oscar-Pepper marked this pull request as ready for review September 12, 2024 09:06
@str4d str4d force-pushed the impl_block_cache_for_fsblockdb branch from 4995d68 to c91dc38 Compare October 25, 2024 06:07
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str4d commented Oct 25, 2024

Rebased on main to fix major merge conflicts after the test framework was moved out of zcash_client_sqlite.

I'm going to perform more rebases on this to clean up the commit history and break apart the larger changes as best I can, to make the PR easier to review and potentially break out smaller pieces of it into separate PRs.

@str4d str4d force-pushed the impl_block_cache_for_fsblockdb branch from c91dc38 to 1675bf3 Compare October 26, 2024 02:16
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str4d commented Oct 26, 2024

Rebased on main to fix more merge conflicts.

@str4d str4d force-pushed the impl_block_cache_for_fsblockdb branch from 1675bf3 to 2c32c73 Compare October 26, 2024 06:06
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str4d commented Oct 26, 2024

Force-pushed to refactor the commits without any changes. In particular, I've pulled most of the async test changes out into a final commit, because I do not want the test framework to be async (at least at this stage), and we can instead use futures::executor::block_on wherever the test framework needs to use async functions (I haven't implemented this change yet but will do so).

I also plan to rebase this PR again once #1595 merges, to move away from the async-trait crate which I think will significantly simplify this PR.

@daira daira mentioned this pull request Oct 26, 2024
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@str4d
zcash_client_backend: Switch from async-trait to RPIT for BlockCache
6f9390b 
The `BlockCache::truncate` default method is removed because the
`trait-variant` crate does not yet support default methods.
@str4d str4d force-pushed the impl_block_cache_for_fsblockdb branch from 2c32c73 to 890fd86 Compare October 28, 2024 22:35
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str4d commented Oct 28, 2024

Rebased on main to move away from the async-trait crate. I also did some more reworking of the commits to split them into logical changes. I almost have the test framework async-ness confined to the last commit; there is just one test in zcash_client_sqlite of FsBlockDb that needs adjusting.

The main next thing I want to figure out is whether the current state of the first commit can be paired down even further. BlockSource is made async in this PR, and I want to figure out whether that is necessary or not for the stated PR goal of implementing BlockCache for FsBlockDb.

str4d and others added 8 commits October 29, 2024 02:28
@str4d
zcash_client_backend: Generalise BlockSource::with_blocks error
36144f9 
Instead of requiring `zcash_client_backend::data_api::chain::Error`, it
now works with any error type that `BlockSource::Error` can be converted
into. We require an explicit conversion function instead of using `From`
because in the specific case of `data_api::chain::Error` it would result
in conflicting `From` impls.
@Oscar-Pepper @str4d
implement Sync for FsBlockDb and BlockDb so they can implement BlockC…
95649dc 
…ache trait

Co-authored-by: Jack Grigg <[email protected]>
@Oscar-Pepper @str4d
replace block source with block cache in scan cached blocks
d3bf952
@Oscar-Pepper @str4d
implement BlockCache for FsBlockDb
69cf2d9
@Oscar-Pepper @str4d
updated change logs
22b7714
@Oscar-Pepper @str4d
implement BlockCache trait for MockBlockSource
163dbc7
@Oscar-Pepper @str4d
implement 'read' for BlockDb so it can call 'scan_cached_blocks'
3d1c710
@Oscar-Pepper @str4d
zcash_client_backend: Migrate test framework to be async
020438c
@str4d str4d force-pushed the impl_block_cache_for_fsblockdb branch from 890fd86 to 020438c Compare October 29, 2024 02:50
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str4d commented Oct 29, 2024

Force-pushed to remove the dependency of BlockSource on data_api::chain::Error, and thus remove the similar complexity that this PR added to BlockCache.

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