Merge tag 'v1.37.0rc1' into hs/hacked-together-event-cache

Synapse 1.37.0rc1 (2021-06-24)
==============================

This release deprecates the current spam checker interface. See the [upgrade notes](https://matrix-org.github.io/synapse/develop/upgrade#deprecation-of-the-current-spam-checker-interface) for more information on how to update to the new generic module interface.

This release also removes support for fetching and renewing TLS certificates using the ACME v1 protocol, which has been fully decommissioned by Let's Encrypt on June 1st 2021. Admins previously using this feature should use a [reverse proxy](https://matrix-org.github.io/synapse/develop/reverse_proxy.html) to handle TLS termination, or use an external ACME client (such as [certbot](https://certbot.eff.org/)) to retrieve a certificate and key and provide them to Synapse using the `tls_certificate_path` and `tls_private_key_path` configuration settings.

Features
--------

- Implement "room knocking" as per [MSC2403](matrix-org/matrix-spec-proposals#2403). Contributed by @Sorunome and anoa. ([\#6739](#6739), [\#9359](#9359), [\#10167](#10167), [\#10212](#10212), [\#10227](#10227))
- Add experimental support for backfilling history into rooms ([MSC2716](matrix-org/matrix-spec-proposals#2716)). ([\#9247](#9247))
- Implement a generic interface for third-party plugin modules. ([\#10062](#10062), [\#10206](#10206))
- Implement config option `sso.update_profile_information` to sync SSO users' profile information with the identity provider each time they login. Currently only displayname is supported. ([\#10108](#10108))
- Ensure that errors during startup are written to the logs and the console. ([\#10191](#10191))

Bugfixes
--------

- Fix a bug introduced in Synapse v1.25.0 that prevented the `ip_range_whitelist` configuration option from working for federation and identity servers. Contributed by @mikure. ([\#10115](#10115))
- Remove a broken import line in Synapse's `admin_cmd` worker. Broke in Synapse v1.33.0. ([\#10154](#10154))
- Fix a bug introduced in Synapse v1.21.0 which could cause `/sync` to return immediately with an empty response. ([\#10157](#10157), [\#10158](#10158))
- Fix a minor bug in the response to `/_matrix/client/r0/user/{user}/openid/request_token` causing `expires_in` to be a float instead of an integer. Contributed by @lukaslihotzki. ([\#10175](#10175))
- Always require users to re-authenticate for dangerous operations: deactivating an account, modifying an account password, and adding 3PIDs. ([\#10184](#10184))
- Fix a bug introduced in Synpase v1.7.2 where remote server count metrics collection would be incorrectly delayed on startup. Found by @heftig. ([\#10195](#10195))
- Fix a bug introduced in Synapse v1.35.1 where an `allow` key of a `m.room.join_rules` event could be applied for incorrect room versions and configurations. ([\#10208](#10208))
- Fix performance regression in responding to user key requests over federation. Introduced in Synapse v1.34.0rc1. ([\#10221](#10221))

Improved Documentation
----------------------

- Add a new guide to decoding request logs. ([\#8436](#8436))
- Mention in the sample homeserver config that you may need to configure max upload size in your reverse proxy. Contributed by @aaronraimist. ([\#10122](#10122))
- Fix broken links in documentation. ([\#10180](#10180))
- Deploy a snapshot of the documentation website upon each new Synapse release. ([\#10198](#10198))

Deprecations and Removals
-------------------------

- The current spam checker interface is deprecated in favour of a new generic modules system. See the [upgrade notes](https://matrix-org.github.io/synapse/develop/upgrade#deprecation-of-the-current-spam-checker-interface) for more information on how to update to the new system. ([\#10062](#10062), [\#10210](#10210), [\#10238](#10238))
- Stop supporting the unstable spaces prefixes from MSC1772. ([\#10161](#10161))
- Remove Synapse's support for automatically fetching and renewing certificates using the ACME v1 protocol. This protocol has been fully turned off by Let's Encrypt for existing installations on June 1st 2021. Admins previously using this feature should use a [reverse proxy](https://matrix-org.github.io/synapse/develop/reverse_proxy.html) to handle TLS termination, or use an external ACME client (such as [certbot](https://certbot.eff.org/)) to retrieve a certificate and key and provide them to Synapse using the `tls_certificate_path` and `tls_private_key_path` configuration settings. ([\#10194](#10194))

Internal Changes
----------------

- Update the database schema versioning to support gradual migration away from legacy tables. ([\#9933](#9933))
- Add type hints to the federation servlets. ([\#10080](#10080))
- Improve OpenTracing for event persistence. ([\#10134](#10134), [\#10193](#10193))
- Clean up the interface for injecting OpenTracing over HTTP. ([\#10143](#10143))
- Limit the number of in-flight `/keys/query` requests from a single device. ([\#10144](#10144))
- Refactor EventPersistenceQueue. ([\#10145](#10145))
- Document `SYNAPSE_TEST_LOG_LEVEL` to see the logger output when running tests. ([\#10148](#10148))
- Update the Complement build tags in GitHub Actions to test currently experimental features. ([\#10155](#10155))
- Add a `synapse_federation_soft_failed_events_total` metric to track how often events are soft failed. ([\#10156](#10156))
- Fetch the corresponding complement branch when performing CI. ([\#10160](#10160))
- Add some developer documentation about boolean columns in database schemas. ([\#10164](#10164))
- Add extra logging fields to better debug where events are being soft failed. ([\#10168](#10168))
- Add debug logging for when we enter and exit `Measure` blocks. ([\#10183](#10183))
- Improve comments in structured logging code. ([\#10188](#10188))
- Update [MSC3083](matrix-org/matrix-spec-proposals#3083) support with modifications from the MSC. ([\#10189](#10189))
- Remove redundant DNS lookup limiter. ([\#10190](#10190))
- Upgrade `black` linting tool to 21.6b0. ([\#10197](#10197))
- Expose OpenTracing trace id in response headers. ([\#10199](#10199))

Author: Half-Shot

.github/workflows/docs.yaml

@@ -3,7 +3,10 @@ name: Deploy the documentation
 on:
   push:
     branches:
+      # For bleeding-edge documentation
       - develop
+      # For documentation specific to a release
+      - 'release-v*'
 
   workflow_dispatch:
 
@@ -22,10 +25,40 @@ jobs:
       - name: Build the documentation
         run: mdbook build
 
+      # Deploy to the latest documentation directories
       - name: Deploy latest documentation
         uses: peaceiris/actions-gh-pages@068dc23d9710f1ba62e86896f84735d869951305 # v3.8.0
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           keep_files: true
           publish_dir: ./book
           destination_dir: ./develop
+
+      - name: Get the current Synapse version
+        id: vars
+        # The $GITHUB_REF value for a branch looks like `refs/heads/release-v1.2`. We do some
+        # shell magic to remove the "refs/heads/release-v" bit from this, to end up with "1.2",
+        # our major/minor version number, and set this to a var called `branch-version`.
+        #
+        # We then use some python to get Synapse's full version string, which may look
+        # like "1.2.3rc4". We set this to a var called `synapse-version`. We use this
+        # to determine if this release is still an RC, and if so block deployment.
+        run: |
+          echo ::set-output name=branch-version::${GITHUB_REF#refs/heads/release-v}
+          echo ::set-output name=synapse-version::`python3 -c 'import synapse; print(synapse.__version__)'`
+
+      # Deploy to the version-specific directory
+      - name: Deploy release-specific documentation
+        # We only carry out this step if we're running on a release branch,
+        # and the current Synapse version does not have "rc" in the name.
+        #
+        # The result is that only full releases are deployed, but can be
+        # updated if the release branch gets retroactive fixes.
+        if: ${{ startsWith( github.ref, 'refs/heads/release-v' ) && !contains( steps.vars.outputs.synapse-version, 'rc') }}
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          keep_files: true
+          publish_dir: ./book
+          # The resulting documentation will end up in a directory named `vX.Y`.
+          destination_dir: ./v${{ steps.vars.outputs.branch-version }}

.github/workflows/tests.yml

@@ -305,11 +305,29 @@ jobs:
         with:
           path: synapse
 
-      - name: Run actions/checkout@v2 for complement
-        uses: actions/checkout@v2
-        with:
-          repository: "matrix-org/complement"
-          path: complement
+      # Attempt to check out the same branch of Complement as the PR. If it
+      # doesn't exist, fallback to master.
+      - name: Checkout complement
+        shell: bash
+        run: |
+          mkdir -p complement
+          # Attempt to use the version of complement which best matches the current
+          # build. Depending on whether this is a PR or release, etc. we need to
+          # use different fallbacks.
+          #
+          # 1. First check if there's a similarly named branch (GITHUB_HEAD_REF
+          #    for pull requests, otherwise GITHUB_REF).
+          # 2. Attempt to use the base branch, e.g. when merging into release-vX.Y
+          #    (GITHUB_BASE_REF for pull requests).
+          # 3. Use the default complement branch ("master").
+          for BRANCH_NAME in "$GITHUB_HEAD_REF" "$GITHUB_BASE_REF" "${GITHUB_REF#refs/heads/}" "master"; do
+            # Skip empty branch names and merge commits.
+            if [[ -z "$BRANCH_NAME" || $BRANCH_NAME =~ ^refs/pull/.* ]]; then
+              continue
+            fi
+
+            (wget -O - "https://github.com/matrix-org/complement/archive/$BRANCH_NAME.tar.gz" | tar -xz --strip-components=1 -C complement) && break
+          done
 
       # Build initial Synapse image
       - run: docker build -t matrixdotorg/synapse:latest -f docker/Dockerfile .
@@ -322,7 +340,7 @@ jobs:
         working-directory: complement/dockerfiles
 
       # Run Complement
-      - run: go test -v -tags synapse_blacklist ./tests
+      - run: go test -v -tags synapse_blacklist,msc2403,msc2946,msc3083 ./tests
         env:
           COMPLEMENT_BASE_IMAGE: complement-synapse:latest
         working-directory: complement

CHANGES.md

@@ -1,3 +1,74 @@
+Synapse 1.37.0rc1 (2021-06-24)
+==============================
+
+This release deprecates the current spam checker interface. See the [upgrade notes](https://matrix-org.github.io/synapse/develop/upgrade#deprecation-of-the-current-spam-checker-interface) for more information on how to update to the new generic module interface.
+
+This release also removes support for fetching and renewing TLS certificates using the ACME v1 protocol, which has been fully decommissioned by Let's Encrypt on June 1st 2021. Admins previously using this feature should use a [reverse proxy](https://matrix-org.github.io/synapse/develop/reverse_proxy.html) to handle TLS termination, or use an external ACME client (such as [certbot](https://certbot.eff.org/)) to retrieve a certificate and key and provide them to Synapse using the `tls_certificate_path` and `tls_private_key_path` configuration settings.
+
+
+Features
+--------
+
+- Implement "room knocking" as per [MSC2403](https://github.com/matrix-org/matrix-doc/pull/2403). Contributed by @Sorunome and anoa. ([\#6739](https://github.com/matrix-org/synapse/issues/6739), [\#9359](https://github.com/matrix-org/synapse/issues/9359), [\#10167](https://github.com/matrix-org/synapse/issues/10167), [\#10212](https://github.com/matrix-org/synapse/issues/10212), [\#10227](https://github.com/matrix-org/synapse/issues/10227))
+- Add experimental support for backfilling history into rooms ([MSC2716](https://github.com/matrix-org/matrix-doc/pull/2716)). ([\#9247](https://github.com/matrix-org/synapse/issues/9247))
+- Implement a generic interface for third-party plugin modules. ([\#10062](https://github.com/matrix-org/synapse/issues/10062), [\#10206](https://github.com/matrix-org/synapse/issues/10206))
+- Implement config option `sso.update_profile_information` to sync SSO users' profile information with the identity provider each time they login. Currently only displayname is supported. ([\#10108](https://github.com/matrix-org/synapse/issues/10108))
+- Ensure that errors during startup are written to the logs and the console. ([\#10191](https://github.com/matrix-org/synapse/issues/10191))
+
+
+Bugfixes
+--------
+
+- Fix a bug introduced in Synapse v1.25.0 that prevented the `ip_range_whitelist` configuration option from working for federation and identity servers. Contributed by @mikure. ([\#10115](https://github.com/matrix-org/synapse/issues/10115))
+- Remove a broken import line in Synapse's `admin_cmd` worker. Broke in Synapse v1.33.0. ([\#10154](https://github.com/matrix-org/synapse/issues/10154))
+- Fix a bug introduced in Synapse v1.21.0 which could cause `/sync` to return immediately with an empty response. ([\#10157](https://github.com/matrix-org/synapse/issues/10157), [\#10158](https://github.com/matrix-org/synapse/issues/10158))
+- Fix a minor bug in the response to `/_matrix/client/r0/user/{user}/openid/request_token` causing `expires_in` to be a float instead of an integer. Contributed by @lukaslihotzki. ([\#10175](https://github.com/matrix-org/synapse/issues/10175))
+- Always require users to re-authenticate for dangerous operations: deactivating an account, modifying an account password, and adding 3PIDs. ([\#10184](https://github.com/matrix-org/synapse/issues/10184))
+- Fix a bug introduced in Synpase v1.7.2 where remote server count metrics collection would be incorrectly delayed on startup. Found by @heftig. ([\#10195](https://github.com/matrix-org/synapse/issues/10195))
+- Fix a bug introduced in Synapse v1.35.1 where an `allow` key of a `m.room.join_rules` event could be applied for incorrect room versions and configurations. ([\#10208](https://github.com/matrix-org/synapse/issues/10208))
+- Fix performance regression in responding to user key requests over federation. Introduced in Synapse v1.34.0rc1. ([\#10221](https://github.com/matrix-org/synapse/issues/10221))
+
+
+Improved Documentation
+----------------------
+
+- Add a new guide to decoding request logs. ([\#8436](https://github.com/matrix-org/synapse/issues/8436))
+- Mention in the sample homeserver config that you may need to configure max upload size in your reverse proxy. Contributed by @aaronraimist. ([\#10122](https://github.com/matrix-org/synapse/issues/10122))
+- Fix broken links in documentation. ([\#10180](https://github.com/matrix-org/synapse/issues/10180))
+- Deploy a snapshot of the documentation website upon each new Synapse release. ([\#10198](https://github.com/matrix-org/synapse/issues/10198))
+
+
+Deprecations and Removals
+-------------------------
+
+- The current spam checker interface is deprecated in favour of a new generic modules system. See the [upgrade notes](https://matrix-org.github.io/synapse/develop/upgrade#deprecation-of-the-current-spam-checker-interface) for more information on how to update to the new system. ([\#10062](https://github.com/matrix-org/synapse/issues/10062), [\#10210](https://github.com/matrix-org/synapse/issues/10210), [\#10238](https://github.com/matrix-org/synapse/issues/10238))
+- Stop supporting the unstable spaces prefixes from MSC1772. ([\#10161](https://github.com/matrix-org/synapse/issues/10161))
+- Remove Synapse's support for automatically fetching and renewing certificates using the ACME v1 protocol. This protocol has been fully turned off by Let's Encrypt for existing installations on June 1st 2021. Admins previously using this feature should use a [reverse proxy](https://matrix-org.github.io/synapse/develop/reverse_proxy.html) to handle TLS termination, or use an external ACME client (such as [certbot](https://certbot.eff.org/)) to retrieve a certificate and key and provide them to Synapse using the `tls_certificate_path` and `tls_private_key_path` configuration settings. ([\#10194](https://github.com/matrix-org/synapse/issues/10194))
+
+
+Internal Changes
+----------------
+
+- Update the database schema versioning to support gradual migration away from legacy tables. ([\#9933](https://github.com/matrix-org/synapse/issues/9933))
+- Add type hints to the federation servlets. ([\#10080](https://github.com/matrix-org/synapse/issues/10080))
+- Improve OpenTracing for event persistence. ([\#10134](https://github.com/matrix-org/synapse/issues/10134), [\#10193](https://github.com/matrix-org/synapse/issues/10193))
+- Clean up the interface for injecting OpenTracing over HTTP. ([\#10143](https://github.com/matrix-org/synapse/issues/10143))
+- Limit the number of in-flight `/keys/query` requests from a single device. ([\#10144](https://github.com/matrix-org/synapse/issues/10144))
+- Refactor EventPersistenceQueue. ([\#10145](https://github.com/matrix-org/synapse/issues/10145))
+- Document `SYNAPSE_TEST_LOG_LEVEL` to see the logger output when running tests. ([\#10148](https://github.com/matrix-org/synapse/issues/10148))
+- Update the Complement build tags in GitHub Actions to test currently experimental features. ([\#10155](https://github.com/matrix-org/synapse/issues/10155))
+- Add a `synapse_federation_soft_failed_events_total` metric to track how often events are soft failed. ([\#10156](https://github.com/matrix-org/synapse/issues/10156))
+- Fetch the corresponding complement branch when performing CI. ([\#10160](https://github.com/matrix-org/synapse/issues/10160))
+- Add some developer documentation about boolean columns in database schemas. ([\#10164](https://github.com/matrix-org/synapse/issues/10164))
+- Add extra logging fields to better debug where events are being soft failed. ([\#10168](https://github.com/matrix-org/synapse/issues/10168))
+- Add debug logging for when we enter and exit `Measure` blocks. ([\#10183](https://github.com/matrix-org/synapse/issues/10183))
+- Improve comments in structured logging code. ([\#10188](https://github.com/matrix-org/synapse/issues/10188))
+- Update [MSC3083](https://github.com/matrix-org/matrix-doc/pull/3083) support with modifications from the MSC. ([\#10189](https://github.com/matrix-org/synapse/issues/10189))
+- Remove redundant DNS lookup limiter. ([\#10190](https://github.com/matrix-org/synapse/issues/10190))
+- Upgrade `black` linting tool to 21.6b0. ([\#10197](https://github.com/matrix-org/synapse/issues/10197))
+- Expose OpenTracing trace id in response headers. ([\#10199](https://github.com/matrix-org/synapse/issues/10199))
+
+
 Synapse 1.36.0 (2021-06-15)
 ===========================
 

CONTRIBUTING.md

@@ -173,12 +173,19 @@ source ./env/bin/activate
 trial tests.rest.admin.test_room tests.handlers.test_admin.ExfiltrateData.test_invite
 ```
 
-If your tests fail, you may wish to look at the logs:
+If your tests fail, you may wish to look at the logs (the default log level is `ERROR`):
 
 ```sh
 less _trial_temp/test.log
 ```
 
+To increase the log level for the tests, set `SYNAPSE_TEST_LOG_LEVEL`:
+
+```sh
+SYNAPSE_TEST_LOG_LEVEL=DEBUG trial tests
+```
+
+
 ## Run the integration tests.
 
 The integration tests are a more comprehensive suite of tests. They

INSTALL.md

@@ -442,10 +442,7 @@ so, you will need to edit `homeserver.yaml`, as follows:
 
 - You will also need to uncomment the `tls_certificate_path` and
   `tls_private_key_path` lines under the `TLS` section. You will need to manage
-  provisioning of these certificates yourself — Synapse had built-in ACME
-  support, but the ACMEv1 protocol Synapse implements is deprecated, not
-  allowed by LetsEncrypt for new sites, and will break for existing sites in
-  late 2020. See [ACME.md](docs/ACME.md).
+  provisioning of these certificates yourself.
 
   If you are using your own certificate, be sure to use a `.pem` file that
   includes the full certificate chain including any intermediate certificates

README.rst

@@ -142,13 +142,6 @@ the form of::
 As when logging in, you will need to specify a "Custom server".  Specify your
 desired ``localpart`` in the 'User name' box.
 
-ACME setup
-==========
-
-For details on having Synapse manage your federation TLS certificates
-automatically, please see `<docs/ACME.md>`_.
-
-
 Security note
 =============
 
@@ -293,18 +286,6 @@ try installing the failing modules individually::
 
     pip install -e "module-name"
 
-Once this is done, you may wish to run Synapse's unit tests to
-check that everything is installed correctly::
-
-    python -m twisted.trial tests
-
-This should end with a 'PASSED' result (note that exact numbers will
-differ)::
-
-    Ran 1337 tests in 716.064s
-
-    PASSED (skips=15, successes=1322)
-
 We recommend using the demo which starts 3 federated instances running on ports `8080` - `8082`
 
     ./demo/start.sh
@@ -324,6 +305,23 @@ If you just want to start a single instance of the app and run it directly::
     python -m synapse.app.homeserver --config-path homeserver.yaml
 
 
+Running the unit tests
+======================
+
+After getting up and running, you may wish to run Synapse's unit tests to
+check that everything is installed correctly::
+
+    trial tests
+
+This should end with a 'PASSED' result (note that exact numbers will
+differ)::
+
+    Ran 1337 tests in 716.064s
+
+    PASSED (skips=15, successes=1322)
+
+For more tips on running the unit tests, like running a specific test or
+to see the logging output, see the `CONTRIBUTING doc <CONTRIBUTING.md#run-the-unit-tests>`_.
 
 
 Running the Integration Tests

UPGRADE.rst

@@ -85,6 +85,23 @@ for example:
      wget https://packages.matrix.org/debian/pool/main/m/matrix-synapse-py3/matrix-synapse-py3_1.3.0+stretch1_amd64.deb
      dpkg -i matrix-synapse-py3_1.3.0+stretch1_amd64.deb
 
+Upgrading to v1.37.0
+====================
+
+Deprecation of the current spam checker interface
+-------------------------------------------------
+
+The current spam checker interface is deprecated in favour of a new generic modules system.
+Authors of spam checker modules can refer to `this documentation <https://matrix-org.github.io/synapse/develop/modules.html#porting-an-existing-module-that-uses-the-old-interface>`_
+to update their modules. Synapse administrators can refer to `this documentation <https://matrix-org.github.io/synapse/develop/modules.html#using-modules>`_
+to update their configuration once the modules they are using have been updated.
+
+We plan to remove support for the current spam checker interface in August 2021.
+
+More module interfaces will be ported over to this new generic system in future versions
+of Synapse.
+
+
 Upgrading to v1.34.0
 ====================
 

contrib/experiments/cursesio.py

@@ -46,14 +46,14 @@ def set_callback(self, callback):
         self.callback = callback
 
     def fileno(self):
-        """ We want to select on FD 0 """
+        """We want to select on FD 0"""
         return 0
 
     def connectionLost(self, reason):
         self.close()
 
     def print_line(self, text):
-        """ add a line to the internal list of lines"""
+        """add a line to the internal list of lines"""
 
         self.lines.append(text)
         self.redraw()
@@ -92,7 +92,7 @@ def printLogLine(self, text):
         )
 
     def doRead(self):
-        """ Input is ready! """
+        """Input is ready!"""
         curses.noecho()
         c = self.stdscr.getch()  # read a character
 
@@ -132,7 +132,7 @@ def logPrefix(self):
         return "CursesStdIO"
 
     def close(self):
-        """ clean up """
+        """clean up"""
 
         curses.nocbreak()
         self.stdscr.keypad(0)

docker/conf/homeserver.yaml

@@ -7,12 +7,6 @@
 tls_certificate_path: "/data/{{ SYNAPSE_SERVER_NAME }}.tls.crt"
 tls_private_key_path: "/data/{{ SYNAPSE_SERVER_NAME }}.tls.key"
 
-{% if SYNAPSE_ACME %}
-acme:
-    enabled: true
-    port: 8009
-{% endif %}
-
 {% endif %}
 
 ## Server ##