Spawning from not seeing any reactor metrics in the Grafana dashboard in
some load tests, noticing `python_twisted_reactor_tick_time_bucket` is
`0` in Prometheus, following it back to Synapse and seeing that we don't
warn about skipping reactor metrics in all cases (when using an unknown
reactor type).
A follow-up to this would be to actually figure out how to instrument
the `ProxiedReactor` or why `ProxiedReactor` is being chosen in the
first place and see if we can get it to use a more normal type
🤔
### Reproduction instructions
1. Using the Complement scripts **with workers**: `WORKERS=1
./scripts-dev/complement.sh ./tests/csapi`
1. `docker logs complement_csapi_dirty_hs1 2>&1 | grep -i "reactor"`
1. With these changes, notice `Skipping configuring
ReactorLastSeenMetric: unexpected reactor type: <__main__.ProxiedReactor
object at 0x7fc0adaaea50>` and `Twisted reactor: ProxiedReactor`
1. Cleanup:
- `docker stop $(docker ps --all --filter "label=complement_context"
--quiet)`
- `docker rm $(docker ps --all --filter "label=complement_context"
--quiet)`
I'm unable to reproduce with the normal Synapse images or
`complement-synapse` without workers. They all use `Twisted reactor:
EPollReactor`
<details>
<summary>Checking <code>docker/Dockerfile-workers</code></summary>
1. Build the Docker image for Synapse: `docker build -t
matrixdotorg/synapse -f docker/Dockerfile . && docker build -t
matrixdotorg/synapse-workers -f docker/Dockerfile-workers .`
([docs](7a24fafbc3/docker/README-testing.md (building-and-running-the-images-manually)))
1. Start Synapse:
```
docker run -d --name synapse \
--mount type=volume,src=synapse-data,dst=/data \
-e SYNAPSE_SERVER_NAME=my.docker.synapse.server \
-e SYNAPSE_REPORT_STATS=no \
-e SYNAPSE_ENABLE_METRICS=1 \
-p 8008:8008 \
-p 9469:9469 \
matrixdotorg/synapse-workers:latest
```
1. `docker logs synapse 2>&1 | grep -i "reactor"`
1. Says `Twisted reactor: EPollReactor`
</details>
Store the JSON content of scheduled delayed events as text instead of a
byte array. This brings it in line with the `event_json` table's `json`
column, and fixes the inability to schedule a delayed event with
non-ASCII characters in its content.
Fixes#19242
- Update `synapse_xxx` (server-level) metrics to use
`server_name="$server_name",` instead of `instance="$instance"`
- Add `synapse_server_name_info` metric to map Synapse `server_name`s to
the `instance`s they're hosted on.
- For process level metrics, update to use `xxx * on (instance, job,
index) group_left(server_name)
synapse_server_name_info{server_name="$server_name"}`
All of the changes here are backwards compatible with whatever people
were doing before with their Prometheus/Grafana dashboards.
Previously, the recommendation was to use the `instance` label to group
everything under the same server (803e4b4d88/docs/metrics-howto.md (L93-L147))
But the `instance` label actually has a special meaning and we're
actually abusing it by using it that way:
> `instance`: The `<host>:<port>` part of the target's URL that was
scraped.
>
> *--
https://prometheus.io/docs/concepts/jobs_instances/#automatically-generated-labels-and-time-series*
Since https://github.com/element-hq/synapse/issues/18592 (Synapse
`v1.139.0`), we now have the `server_name` label to use instead.
---
Additionally, the assumption that a single process is serving a single
server is no longer true with [Synapse Pro for small
hosts](https://docs.element.io/latest/element-server-suite-pro/synapse-pro-for-small-hosts/overview/).
Part of https://github.com/element-hq/synapse-small-hosts/issues/106
### Motivating use case
Although this change also benefits [Synapse Pro for small
hosts](https://docs.element.io/latest/element-server-suite-pro/synapse-pro-for-small-hosts/overview/)
(https://github.com/element-hq/synapse-small-hosts/issues/106), this is
actually spawning from adding Prometheus metrics to our workerized
Docker image (https://github.com/element-hq/synapse/pull/19324,
https://github.com/element-hq/synapse/pull/19336) with a more correct
label setup (without `instance`) and wanting the dashboard to be better.
### Testing strategy
1. Make sure your firewall allows the Docker containers to communicate
to the host (`host.docker.internal`) so they can access exposed ports of
other Docker containers. We want to allow Synapse to access the
Prometheus container and Grafana to access to the Prometheus container.
- `sudo ufw allow in on docker0 comment "Allow traffic from the default
Docker network to the host machine (host.docker.internal)"`
- `sudo ufw allow in on br-+ comment "(from Matrix Complement testing)
Allow traffic from custom Docker networks to the host machine
(host.docker.internal)"`
- [Complement firewall
docs](ee6acd9154/README.md (potential-conflict-with-firewall-software))
1. Build the Docker image for Synapse: `docker build -t
matrixdotorg/synapse -f docker/Dockerfile .`
([docs](7a24fafbc3/docker/README-testing.md (building-and-running-the-images-manually)))
1. Generate config for Synapse:
```
docker run -it --rm \
--mount type=volume,src=synapse-data,dst=/data \
-e SYNAPSE_SERVER_NAME=my.docker.synapse.server \
-e SYNAPSE_REPORT_STATS=yes \
-e SYNAPSE_ENABLE_METRICS=1 \
matrixdotorg/synapse:latest generate
```
1. Start Synapse:
```
docker run -d --name synapse \
--mount type=volume,src=synapse-data,dst=/data \
-p 8008:8008 \
-p 19090:19090 \
matrixdotorg/synapse:latest
```
1. You should be able to see metrics from Synapse at
http://localhost:19090/_synapse/metrics
1. Create a Prometheus config (`prometheus.yml`)
```yaml
global:
scrape_interval: 15s
scrape_timeout: 15s
evaluation_interval: 15s
scrape_configs:
- job_name: prometheus
scrape_interval: 15s
metrics_path: /_synapse/metrics
scheme: http
static_configs:
- targets:
# This should point to the Synapse metrics listener (we're using
`host.docker.internal` because this is from within the Prometheus
container)
- host.docker.internal:19090
```
1. Start Prometheus (update the volume bind mount to the config you just
saved somewhere):
```
docker run \
--detach \
--name=prometheus \
--add-host host.docker.internal:host-gateway \
-p 9090:9090 \
-v
~/Documents/code/random/prometheus-config/prometheus.yml:/etc/prometheus/prometheus.yml
\
prom/prometheus
```
1. Make sure you're seeing some data in Prometheus. On
http://localhost:9090/query, search for `synapse_build_info`
1. Start [Grafana](https://hub.docker.com/r/grafana/grafana)
```
docker run -d --name=grafana --add-host
host.docker.internal:host-gateway -p 3000:3000 grafana/grafana
```
1. Visit the Grafana dashboard, http://localhost:3000/ (Credentials:
`admin`/`admin`)
1. **Connections** -> **Data Sources** -> **Add data source** ->
**Prometheus**
- Prometheus server URL: `http://host.docker.internal:9090`
1. Import the Synapse dashboard: `contrib/grafana/synapse.json`
To test workers, you can use the testing strategy from
https://github.com/element-hq/synapse/pull/19336 (assumes both changes
from this PR and the other PR are combined)
Fixes#19347
This deprecates MSC2697 which has been closed since May 2024. As per
#19347 this seems to be a thing we can just rip out. The crypto team
have moved onto MSC3814 and are suggesting that developers who rely on
MSC2697 should use MSC3814 instead.
MSC2697 implementation originally introduced by https://github.com/matrix-org/synapse/pull/8380
Bumps [authlib](https://github.com/authlib/authlib) from 1.6.5 to 1.6.6.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/authlib/authlib/blob/main/docs/changelog.rst">authlib's
changelog</a>.</em></p>
<blockquote>
<h2>Version 1.6.6</h2>
<p><strong>Released on Dec 12, 2025</strong></p>
<ul>
<li><code>get_jwt_config</code> takes a <code>client</code> parameter,
:pr:<code>844</code>.</li>
<li>Fix incorrect signature when <code>Content-Type</code> is
x-www-form-urlencoded for OAuth 1.0 Client, :pr:<code>778</code>.</li>
<li>Use <code>expires_in</code> in <code>OAuth2Token</code> when
<code>expires_at</code> is unparsable, :pr:<code>842</code>.</li>
<li>Always track <code>state</code> in session for OAuth client
integrations.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="bb7a315bef"><code>bb7a315</code></a>
chore: release 1.6.6</li>
<li><a
href="0a423d4638"><code>0a423d4</code></a>
Merge pull request <a
href="https://redirect.github.com/authlib/authlib/issues/844">#844</a>
from azmeuk/806-get-jwt-config-client</li>
<li><a
href="2808378611"><code>2808378</code></a>
Merge commit from fork</li>
<li><a
href="714502a473"><code>714502a</code></a>
feat: get_jwt_config takes a client parameter</li>
<li><a
href="260d04edee"><code>260d04e</code></a>
Fix: Use <code>expires_in</code> when <code>expires_at</code> is
unparsable</li>
<li><a
href="eb37124bbb"><code>eb37124</code></a>
Merge pull request <a
href="https://redirect.github.com/authlib/authlib/issues/778">#778</a>
from shc261392/fix-httpx-oauth1-form-data-incorrect-s...</li>
<li><a
href="0ba9ec4fee"><code>0ba9ec4</code></a>
docs: fix guide on requests self signed certificate</li>
<li><a
href="a2e9943815"><code>a2e9943</code></a>
docs: indicate that <a
href="https://redirect.github.com/authlib/authlib/issues/743">#743</a>
needs a migration</li>
<li><a
href="06015d2065"><code>06015d2</code></a>
test: factorize the token fixture</li>
<li>See full diff in <a
href="https://github.com/authlib/authlib/compare/v1.6.5...v1.6.6">compare
view</a></li>
</ul>
</details>
<br />
[](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores)
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Bumps [urllib3](https://github.com/urllib3/urllib3) from 2.6.0 to 2.6.3.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/urllib3/urllib3/releases">urllib3's
releases</a>.</em></p>
<blockquote>
<h2>2.6.3</h2>
<h2>🚀 urllib3 is fundraising for HTTP/2 support</h2>
<p><a
href="https://sethmlarson.dev/urllib3-is-fundraising-for-http2-support">urllib3
is raising ~$40,000 USD</a> to release HTTP/2 support and ensure
long-term sustainable maintenance of the project after a sharp decline
in financial support. If your company or organization uses Python and
would benefit from HTTP/2 support in Requests, pip, cloud SDKs, and
thousands of other projects <a
href="https://opencollective.com/urllib3">please consider contributing
financially</a> to ensure HTTP/2 support is developed sustainably and
maintained for the long-haul.</p>
<p>Thank you for your support.</p>
<h2>Changes</h2>
<ul>
<li>Fixed a security issue where decompression-bomb safeguards of the
streaming API were bypassed when HTTP redirects were followed.
(CVE-2026-21441 reported by <a
href="https://github.com/D47A"><code>@D47A</code></a>, 8.9 High,
GHSA-38jv-5279-wg99)</li>
<li>Started treating <code>Retry-After</code> times greater than 6 hours
as 6 hours by default. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3743">urllib3/urllib3#3743</a>)</li>
<li>Fixed <code>urllib3.connection.VerifiedHTTPSConnection</code> on
Emscripten. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3752">urllib3/urllib3#3752</a>)</li>
</ul>
<h2>2.6.2</h2>
<h2>🚀 urllib3 is fundraising for HTTP/2 support</h2>
<p><a
href="https://sethmlarson.dev/urllib3-is-fundraising-for-http2-support">urllib3
is raising ~$40,000 USD</a> to release HTTP/2 support and ensure
long-term sustainable maintenance of the project after a sharp decline
in financial support. If your company or organization uses Python and
would benefit from HTTP/2 support in Requests, pip, cloud SDKs, and
thousands of other projects <a
href="https://opencollective.com/urllib3">please consider contributing
financially</a> to ensure HTTP/2 support is developed sustainably and
maintained for the long-haul.</p>
<p>Thank you for your support.</p>
<h2>Changes</h2>
<ul>
<li>Fixed <code>HTTPResponse.read_chunked()</code> to properly handle
leftover data in the decoder's buffer when reading compressed chunked
responses. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3734">urllib3/urllib3#3734</a>)</li>
</ul>
<h2>2.6.1</h2>
<h2>🚀 urllib3 is fundraising for HTTP/2 support</h2>
<p><a
href="https://sethmlarson.dev/urllib3-is-fundraising-for-http2-support">urllib3
is raising ~$40,000 USD</a> to release HTTP/2 support and ensure
long-term sustainable maintenance of the project after a sharp decline
in financial support. If your company or organization uses Python and
would benefit from HTTP/2 support in Requests, pip, cloud SDKs, and
thousands of other projects <a
href="https://opencollective.com/urllib3">please consider contributing
financially</a> to ensure HTTP/2 support is developed sustainably and
maintained for the long-haul.</p>
<p>Thank you for your support.</p>
<h2>Changes</h2>
<ul>
<li>Restore previously removed <code>HTTPResponse.getheaders()</code>
and <code>HTTPResponse.getheader()</code> methods. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3731">#3731</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/urllib3/urllib3/blob/main/CHANGES.rst">urllib3's
changelog</a>.</em></p>
<blockquote>
<h1>2.6.3 (2026-01-07)</h1>
<ul>
<li>Fixed a high-severity security issue where decompression-bomb
safeguards of
the streaming API were bypassed when HTTP redirects were followed.
(<code>GHSA-38jv-5279-wg99
<https://github.com/urllib3/urllib3/security/advisories/GHSA-38jv-5279-wg99></code>__)</li>
<li>Started treating <code>Retry-After</code> times greater than 6 hours
as 6 hours by
default. (<code>[#3743](https://github.com/urllib3/urllib3/issues/3743)
<https://github.com/urllib3/urllib3/issues/3743></code>__)</li>
<li>Fixed <code>urllib3.connection.VerifiedHTTPSConnection</code> on
Emscripten.
(<code>[#3752](https://github.com/urllib3/urllib3/issues/3752)
<https://github.com/urllib3/urllib3/issues/3752></code>__)</li>
</ul>
<h1>2.6.2 (2025-12-11)</h1>
<ul>
<li>Fixed <code>HTTPResponse.read_chunked()</code> to properly handle
leftover data in
the decoder's buffer when reading compressed chunked responses.
(<code>[#3734](https://github.com/urllib3/urllib3/issues/3734)
<https://github.com/urllib3/urllib3/issues/3734></code>__)</li>
</ul>
<h1>2.6.1 (2025-12-08)</h1>
<ul>
<li>Restore previously removed <code>HTTPResponse.getheaders()</code>
and
<code>HTTPResponse.getheader()</code> methods.
(<code>[#3731](https://github.com/urllib3/urllib3/issues/3731)
<https://github.com/urllib3/urllib3/issues/3731></code>__)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="0248277dd7"><code>0248277</code></a>
Release 2.6.3</li>
<li><a
href="8864ac407b"><code>8864ac4</code></a>
Merge commit from fork</li>
<li><a
href="70cecb27ca"><code>70cecb2</code></a>
Fix Scorecard issues related to vulnerable dev dependencies (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3755">#3755</a>)</li>
<li><a
href="41f249abe1"><code>41f249a</code></a>
Move "v2.0 Migration Guide" to the end of the table of
contents (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3747">#3747</a>)</li>
<li><a
href="fd4dffd2fc"><code>fd4dffd</code></a>
Patch <code>VerifiedHTTPSConnection</code> for Emscripten (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3752">#3752</a>)</li>
<li><a
href="13f0bfd55e"><code>13f0bfd</code></a>
Handle massive values in Retry-After when calculating time to sleep for
(<a
href="https://redirect.github.com/urllib3/urllib3/issues/3743">#3743</a>)</li>
<li><a
href="8c480bf87b"><code>8c480bf</code></a>
Bump actions/upload-artifact from 5.0.0 to 6.0.0 (<a
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<li><a
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Bump actions/cache from 4.3.0 to 5.0.1 (<a
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<li><a
href="82b8479663"><code>82b8479</code></a>
Bump actions/download-artifact from 6.0.0 to 7.0.0 (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3749">#3749</a>)</li>
<li><a
href="34284cb017"><code>34284cb</code></a>
Mention experimental features in the security policy (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3746">#3746</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/urllib3/urllib3/compare/2.6.0...2.6.3">compare
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Bumps [pynacl](https://github.com/pyca/pynacl) from 1.5.0 to 1.6.2.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/pyca/pynacl/blob/main/CHANGELOG.rst">pynacl's
changelog</a>.</em></p>
<blockquote>
<h2>1.6.2 (2026-01-01)</h2>
<ul>
<li>Updated <code>libsodium</code> to 1.0.20-stable (2025-12-31 build)
to resolve
<code>CVE-2025-69277</code>.</li>
</ul>
<h2>1.6.1 (2025-11-10)</h2>
<ul>
<li>The <code>MAKE</code> environment variable can now be used to
specify the <code>make</code>
binary that should be used in the build process.</li>
</ul>
<h2>1.6.0 (2025-09-11)</h2>
<ul>
<li><strong>BACKWARDS INCOMPATIBLE:</strong> Removed support for Python
3.6 and 3.7.</li>
<li>Added support for the low level AEAD AES bindings.</li>
<li>Added support for
<code>crypto_core_ed25519_from_uniform</code>.</li>
<li>Update <code>libsodium</code> to 1.0.20-stable (2025-08-27
build).</li>
<li>Added support for free-threaded Python 3.14.</li>
<li>Added support for Windows on ARM wheels.</li>
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<li><a
href="685a5e7277"><code>685a5e7</code></a>
Switch to PyPI trusted publishing (<a
href="https://redirect.github.com/pyca/pynacl/issues/925">#925</a>)</li>
<li><a
href="78e0aa32b1"><code>78e0aa3</code></a>
missed adding these files as part of the libsodium update (<a
href="https://redirect.github.com/pyca/pynacl/issues/924">#924</a>)</li>
<li><a
href="96314884d8"><code>9631488</code></a>
Bump libsodium to the latest 1.0.20 (<a
href="https://redirect.github.com/pyca/pynacl/issues/922">#922</a>)</li>
<li><a
href="563b25bded"><code>563b25b</code></a>
Add script to update vendored libsodium (<a
href="https://redirect.github.com/pyca/pynacl/issues/921">#921</a>)</li>
<li><a
href="d233105618"><code>d233105</code></a>
Include libsodium license in wheels (<a
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<li><a
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Bump dessant/lock-threads from 5 to 6 (<a
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Bump actions/download-artifact from 6.0.0 to 7.0.0 (<a
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href="fb6e37f76d"><code>fb6e37f</code></a>
Bump actions/upload-artifact from 5 to 6 (<a
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Bump actions/checkout from 6.0.0 to 6.0.1 (<a
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Fix /event/ endpoint not transforming event with per-requester metadata
Pass notif_event through filter_events_for_client \
Not aware of an actual issue here, but seems silly to bypass it
Call it filter_and_transform_events_for_client to make it more obvious
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Bumps
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docs: correct description of Node.js 24 support in README</li>
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docs: update README to correct action name for Node.js 24 support</li>
<li><a
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chore: release v6.0.0 for Node.js 24 support</li>
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Merge pull request <a
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chore: rebuild dist</li>
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chore: add missing license cache files for <code>@actions/core</code>,
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chore: update license files for <code>@actions/artifact</code><a
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chore: update package-lock.json with <code>@actions/artifact</code><a
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<li><a
href="b5b1a91840"><code>b5b1a91</code></a>
fix: update <code>@actions/artifact</code> to ^5.0.0 for Node.js 24
punycode fix</li>
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Bumps [actions/cache](https://github.com/actions/cache) from 4.3.0 to
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<details>
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<blockquote>
<h2>v5.0.1</h2>
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<p>[!IMPORTANT]
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<li>fix: update <code>@actions/cache</code> for Node.js 24 punycode
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href="https://redirect.github.com/actions/cache/pull/1685">actions/cache#1685</a></li>
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<h1>v5.0.0</h1>
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href="https://github.com/salmanmkc"><code>@salmanmkc</code></a> in <a
href="https://redirect.github.com/actions/cache/pull/1684">actions/cache#1684</a></li>
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<h2>v5.0.0</h2>
<blockquote>
<p>[!IMPORTANT]
<strong><code>actions/cache@v5</code> runs on the Node.js 24 runtime and
requires a minimum Actions Runner version of
<code>2.327.1</code>.</strong></p>
<p>If you are using self-hosted runners, ensure they are updated before
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</blockquote>
<hr />
<h2>What's Changed</h2>
<ul>
<li>Upgrade to use node24 by <a
href="https://github.com/salmanmkc"><code>@salmanmkc</code></a> in <a
href="https://redirect.github.com/actions/cache/pull/1630">actions/cache#1630</a></li>
<li>Prepare v5.0.0 release by <a
href="https://github.com/salmanmkc"><code>@salmanmkc</code></a> in <a
href="https://redirect.github.com/actions/cache/pull/1684">actions/cache#1684</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/actions/cache/compare/v4.3.0...v5.0.0">https://github.com/actions/cache/compare/v4.3.0...v5.0.0</a></p>
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<blockquote>
<h1>Releases</h1>
<h2>Changelog</h2>
<h3>5.0.1</h3>
<ul>
<li>Update <code>@azure/storage-blob</code> to <code>^12.29.1</code> via
<code>@actions/cache@5.0.1</code> <a
href="https://redirect.github.com/actions/cache/pull/1685">#1685</a></li>
</ul>
<h3>5.0.0</h3>
<blockquote>
<p>[!IMPORTANT]
<code>actions/cache@v5</code> runs on the Node.js 24 runtime and
requires a minimum Actions Runner version of <code>2.327.1</code>.
If you are using self-hosted runners, ensure they are updated before
upgrading.</p>
</blockquote>
<h3>4.3.0</h3>
<ul>
<li>Bump <code>@actions/cache</code> to <a
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</ul>
<h3>4.2.4</h3>
<ul>
<li>Bump <code>@actions/cache</code> to v4.0.5</li>
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<h3>4.2.3</h3>
<ul>
<li>Bump <code>@actions/cache</code> to v4.0.3 (obfuscates SAS token in
debug logs for cache entries)</li>
</ul>
<h3>4.2.2</h3>
<ul>
<li>Bump <code>@actions/cache</code> to v4.0.2</li>
</ul>
<h3>4.2.1</h3>
<ul>
<li>Bump <code>@actions/cache</code> to v4.0.1</li>
</ul>
<h3>4.2.0</h3>
<p>TLDR; The cache backend service has been rewritten from the ground up
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href="https://github.com/actions/cache">actions/cache</a> now integrates
with the new cache service (v2) APIs.</p>
<p>The new service will gradually roll out as of <strong>February 1st,
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<p><strong>We are deprecating some versions of this action</strong>. We
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<p>Upgrading to the recommended versions will not break your
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<h3>4.1.2</h3>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
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<li><a
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Merge pull request <a
href="https://redirect.github.com/actions/cache/issues/1686">#1686</a>
from actions/cache-v5.0.1-release</li>
<li><a
href="8ff5423e8b"><code>8ff5423</code></a>
chore: release v5.0.1</li>
<li><a
href="9233019a15"><code>9233019</code></a>
Merge pull request <a
href="https://redirect.github.com/actions/cache/issues/1685">#1685</a>
from salmanmkc/node24-storage-blob-fix</li>
<li><a
href="b975f2bb84"><code>b975f2b</code></a>
fix: add peer property to package-lock.json for dependencies</li>
<li><a
href="d0a0e18134"><code>d0a0e18</code></a>
fix: update license files for <code>@actions/cache</code>,
fast-xml-parser, and strnum</li>
<li><a
href="74de208dcf"><code>74de208</code></a>
fix: update <code>@actions/cache</code> to ^5.0.1 for Node.js 24
punycode fix</li>
<li><a
href="ac7f1152ea"><code>ac7f115</code></a>
peer</li>
<li><a
href="b0f846b50b"><code>b0f846b</code></a>
fix: update <code>@actions/cache</code> with storage-blob fix for
Node.js 24 punycode depr...</li>
<li><a
href="a783357455"><code>a783357</code></a>
Merge pull request <a
href="https://redirect.github.com/actions/cache/issues/1684">#1684</a>
from actions/prepare-cache-v5-release</li>
<li><a
href="3bb0d78750"><code>3bb0d78</code></a>
docs: highlight v5 runner requirement in releases</li>
<li>Additional commits viewable in <a
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Bumps
[actions/download-artifact](https://github.com/actions/download-artifact)
from 6.0.0 to 7.0.0.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
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<blockquote>
<h2>v7.0.0</h2>
<h2>v7 - What's new</h2>
<blockquote>
<p>[!IMPORTANT]
actions/download-artifact@v7 now runs on Node.js 24 (<code>runs.using:
node24</code>) and requires a minimum Actions Runner version of 2.327.1.
If you are using self-hosted runners, ensure they are updated before
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<h3>Node.js 24</h3>
<p>This release updates the runtime to Node.js 24. v6 had preliminary
support for Node 24, however this action was by default still running on
Node.js 20. Now this action by default will run on Node.js 24.</p>
<h2>What's Changed</h2>
<ul>
<li>Update GHES guidance to include reference to Node 20 version by <a
href="https://github.com/patrikpolyak"><code>@patrikpolyak</code></a>
in <a
href="https://redirect.github.com/actions/download-artifact/pull/440">actions/download-artifact#440</a></li>
<li>Download Artifact Node24 support by <a
href="https://github.com/salmanmkc"><code>@salmanmkc</code></a> in <a
href="https://redirect.github.com/actions/download-artifact/pull/415">actions/download-artifact#415</a></li>
<li>fix: update <code>@actions/artifact</code> to fix Node.js 24
punycode deprecation by <a
href="https://github.com/salmanmkc"><code>@salmanmkc</code></a> in <a
href="https://redirect.github.com/actions/download-artifact/pull/451">actions/download-artifact#451</a></li>
<li>prepare release v7.0.0 for Node.js 24 support by <a
href="https://github.com/salmanmkc"><code>@salmanmkc</code></a> in <a
href="https://redirect.github.com/actions/download-artifact/pull/452">actions/download-artifact#452</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a
href="https://github.com/patrikpolyak"><code>@patrikpolyak</code></a>
made their first contribution in <a
href="https://redirect.github.com/actions/download-artifact/pull/440">actions/download-artifact#440</a></li>
<li><a href="https://github.com/salmanmkc"><code>@salmanmkc</code></a>
made their first contribution in <a
href="https://redirect.github.com/actions/download-artifact/pull/415">actions/download-artifact#415</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/actions/download-artifact/compare/v6.0.0...v7.0.0">https://github.com/actions/download-artifact/compare/v6.0.0...v7.0.0</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="37930b1c2a"><code>37930b1</code></a>
Merge pull request <a
href="https://redirect.github.com/actions/download-artifact/issues/452">#452</a>
from actions/download-artifact-v7-release</li>
<li><a
href="72582b9e0a"><code>72582b9</code></a>
doc: update readme</li>
<li><a
href="0d2ec9d4cb"><code>0d2ec9d</code></a>
chore: release v7.0.0 for Node.js 24 support</li>
<li><a
href="fd7ae8fda6"><code>fd7ae8f</code></a>
Merge pull request <a
href="https://redirect.github.com/actions/download-artifact/issues/451">#451</a>
from actions/fix-storage-blob</li>
<li><a
href="d484700543"><code>d484700</code></a>
chore: restore minimatch.dep.yml license file</li>
<li><a
href="03a808050e"><code>03a8080</code></a>
chore: remove obsolete dependency license files</li>
<li><a
href="56fe6d904b"><code>56fe6d9</code></a>
chore: update <code>@actions/artifact</code> license file to 5.0.1</li>
<li><a
href="8e3ebc4ab4"><code>8e3ebc4</code></a>
chore: update package-lock.json with <code>@actions/artifact</code><a
href="https://github.com/5"><code>@5</code></a>.0.1</li>
<li><a
href="1e3c4b4d49"><code>1e3c4b4</code></a>
fix: update <code>@actions/artifact</code> to ^5.0.0 for Node.js 24
punycode fix</li>
<li><a
href="458627d354"><code>458627d</code></a>
chore: use local <code>@actions/artifact</code> package for Node.js 24
testing</li>
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For reference, this PR used to include this whole `shared_config` block in the diff.
But https://github.com/element-hq/synapse/pull/19324 was merged first which introduced parts of it already.
Here is what this code used to look like: 566670c363/docker/configure_workers_and_start.py (L865-L868)
---
Original context for why it was changed this way:
https://github.com/matrix-org/synapse/pull/14921#discussion_r1126257933
Previously, this code made me question two things:
1. Do we actually use `worker_config["shared_extra_conf"]` in the
templates?
- At first glance, I couldn't see why we're updating `shared_extra_conf`
here. It's not used in the `worker.yaml.j2` template so all of this
seemed a bit pointless.
- Turns out, updating `shared_extra_conf` itself is pointless and it's
being done as a convenient place to mix the objects to get things right
in `shared_config` (confusing).
1. Does it actually do anything?
- Because `shared_config` starts out as an empty object, my first glance
made me think we we're just updating with an empty object and then just
re-assigning. But because we're in a loop, we actually accumulate the
`shared_extra_conf` from each worker.
I'm not sure whether I'm capturing my confusion well enough here but
basically, this made me spend time trying to figure out what/why we're
doing things this way and we can use a more clear pattern to accomplish
the same thing.
---
This change is spawning from looking at the
`docker/configure_workers_and_start.py` script in order to add a metrics
listener ([upcoming
PR](https://github.com/element-hq/synapse/pull/19324)).
Spawning from wanting to [run a load
test](https://github.com/element-hq/synapse-rust-apps/pull/397) against
the Complement Docker image of Synapse and see metrics from the
homeserver.
### Why not just provide your own homeserver config?
Probably possible but it gets tricky when you try to use the workers
variant of the Docker image (`docker/Dockerfile-workers`). The way to
workaround it would probably be to `yq` edit everything in a script and
change `/data/homeserver.yaml` and `/conf/workers/*.yaml` to add the
`metrics` listener. And then modify `/conf/workers/shared.yaml` to add
`enable_metrics: true`. Doesn't spark much joy.
This way we can see what's happening as the tests run
instead of nothing until the end. Also useful to split the test output
from the formatting so we can take the raw test output before formatting
gobbles it all up.
Same thing I did in
https://github.com/element-hq/synapse-rust-apps/pull/361
