# Description of Changes
Fixes https://github.com/clockworklabs/SpacetimeDB/issues/2824.
Defines a global pool `BsatnRowListBuilderPool` which reclaims the
buffers of a `ServerMessage<BsatnFormat>` and which is then used when
building new `ServerMessage<BsatnFormat>`s.
Notes:
1. The new pool `BsatnRowListBuilderPool` reports the same kind of
metrics to prometheus as `PagePool` does.
2. `BsatnRowListBuilder` now works in terms of `BytesMut`.
3. The trait method `fn to_bsatn_extend` is redefined to be capable of
dealing with `BytesMut` as well as `Vec<u8>`.
4. A trait `ConsumeEachBuffer` is defined from
`ServerMessage<BsatnFormat>` and down to extract buffers.
`<ServerMessage<_> as ConsumeEachBuffer>::consume_each_buffer(...)` is
then called in `messages::serialize(...)` just after bsatn-encoding the
entire message and before any compression is done. This is the place
where the pool reclaims buffers.
# Benchmarks
Benchmark numbers vs. master using `cargo bench --bench subscription --
--baseline subs` on i7-7700K, 64GB RAM:
```
footprint-scan time: [21.607 ms 21.873 ms 22.187 ms]
change: [-62.090% -61.438% -60.787%] (p = 0.00 < 0.05)
Performance has improved.
full-scan time: [22.185 ms 22.245 ms 22.324 ms]
change: [-36.884% -36.497% -36.166%] (p = 0.00 < 0.05)
Performance has improved.
```
The improvements in `footprint-scan` are mostly thanks to
https://github.com/clockworklabs/SpacetimeDB/pull/2918, but 7 ms of the
improvements here are thanks to the pool. The improvements to
`full-scan` should be only thanks to the pool.
# API and ABI breaking changes
None
# Expected complexity level and risk
2?
# Testing
- Tests for `Pool<T>` also apply to `BsatnRowListBuilderPool`.
# Description of Changes
There were mentions of `hashbrown` in the repo that did not go through
`spacetimedb_data_structures::map`.
This caused compile errors on master when running certain tests locally.
These have been replaced with the proper imports.
The PR also bump hashbrown to 0.16.1 and foldhash to 0.2.0.
# API and ABI breaking changes
None
# Expected complexity level and risk
2
# Testing
Covered by existing tests.
# Description of Changes
This patch does the following:
1. Expands views as part of query planning. Views are always assumed to
be materialized by the query planner, however a view's backing table may
have private columns such as the `sender` column. The query planner
needs to filter by this column in order to select the rows pertaining to
a particular caller.
2. Plumbs `AuthCtx` through the query optimizer. This is needed in order
to implement (1).
3. Adds a new operator for views to the query engine that drops a view's
private columns
# API and ABI breaking changes
None
# Expected complexity level and risk
2.5
# Testing
- [x] SQL http tests
- [ ] Subscription tests
- [ ] One off query tests
# Description of Changes
Necessary for pulling in rolldown.
# API and ABI breaking changes
None
# Expected complexity level and risk
1, with the caveat that this updates the Rust version and therefore
touches all the code.
# Testing
- [ ] Just the automated testing
The `Clone` impl for `ClientConnection` would create an independent
instance that could not observe module hotswapping. This would result in
methods called on a replaced `ModuleHost` to fail, because that host
exited already.
Fix by reading the `ModuleHost` from the watch channel directly, instead
of maintaining a redundant copy.
Also fix `watch_module_host` to properly mark the current module host as
seen.
# Expected complexity level and risk
2
# Testing
- [x] test suite passes
- [x] ran @bfops repro script
# Description of Changes
We recently merged several repos together. This PR clarifies the license
terms for several subdirectories, as well as the relationship between
the licenses.
The licenses in our subdirectories have become symbolic links to
licenses in our toplevel `licenses` directory. For any particular
subdirectory's license file in the diff, you can click `... -> View
file` and then click on the text that says "Symbolic Link" on that page.
This will take you to the license file that it links to.
I have also updated the `tools/upgrade-version` script to update the
change date in the new `licenses/BSL.txt` file.
# API and ABI breaking changes
None.
# Expected complexity level and risk
1
# Testing
None. Only changes to license files.
---------
Co-authored-by: Zeke Foppa <bfops@users.noreply.github.com>
Mazdak Farrokhzad