IndexedDB: implement EventCacheStore::try_take_leased_lock

[mgoldenberg]

Background

This pull request is part of a series of pull requests to add a full IndexedDB implementation of the EventCacheStore (see #4617, #4996, #5090, #5138, #5226, #5274, #5343, #5384, #5406, #5414, #5497). This particular pull request adds an IndexedDB-backed implementation of EventCacheStore::try_take_leased_lock.

Changes

The following types have been added for representing and indexing leased locks.

• Lease - the primary type for representing a leased lock.
• IndexedLease - an indexed version of Lease.
• IndexedLeaseIdKey - the primary key of an IndexedLease.

To store the types above, an object store (v1::keys::LEASES) gets created when upgrading the database to version 1 with primary key id.

Additionally, the following transaction functions are added for conveniently working with leases.

• IndexeddbEventCacheStoreTransaction::get_lease_by_id
• IndexeddbEventCacheStoreTransaction::put_lease

Tests

matrix_sdk_base::event_cache_store_integration_tests_time previously used tokio::time::sleep which is not supported on wasm targets.

The time module will only work on WASM platforms that have support for timers (e.g. wasm32-wasi). The timing functions will panic if used on a WASM platform that does not support timers.

(Link to text here).

I have modified this macro so that when running on wasm targets with an unknown operating system, we use a compatible crate, i.e., gloo_timers. This way, these tests can be run against the matrix-sdk-indexeddb crate.

Future Work

• Proper handling of LinkedChunkId (see here).
• Add implementation of EventCacheStoreMedia

---

• Public API changes documented in changelogs (optional)

Signed-off-by: Michael Goldenberg [email protected]

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.57%. Comparing base (01059ef) to head (c4431cc).
⚠️ Report is 10 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

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##             main    #5506   +/-   ##
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  Coverage   88.57%   88.57%           
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  Files         340      340           
  Lines       93665    93665           
  Branches    93665    93665           
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+ Hits        82960    82964    +4     
+ Misses       6575     6569    -6     
- Partials     4130     4132    +2     

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[codspeed-hq]

CodSpeed Performance Report

Merging #5506 will not alter performance

_{Comparing mgoldenberg:indexeddb-event-cache-store-lease (c4431cc) with main (cf9d058)}

Summary

✅ 31 untouched benchmarks

[Hywan]

Looks great! Thanks! A few tiny feedback. Apart from that, great job.

[Hywan]

Good! Can you rebase your history please? Then we can merge the PR.