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Author SHA1 Message Date
Erik Johnston
720d30469f
Merge pull request #5730 from matrix-org/erikj/cache_versions 
Cache get_version_string.
 2019-07-22 14:52:52 +01:00
Erik Johnston
79f689e6c2 Newsfile 2019-07-22 14:52:19 +01:00
Erik Johnston
c560b791e1 Add process hooks to tell systemd our state. 
Fixes #5676.
 2019-07-22 14:52:18 +01:00
Jason Robinson
8e513e7afc
Merge pull request #5731 from matrix-org/jaywink/admin-user-list-user-type 
Add `user_type` to returned fields in admin API user list endpoints
 2019-07-22 16:28:51 +03:00
Erik Johnston
22e862304a
Update changelog.d/5730.misc 
Co-Authored-By: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
 2019-07-22 14:09:56 +01:00
Richard van der Hoff
0cb72812f9
Fix stack overflow in Keyring (#5724) 
* Refactor Keyring._start_key_lookups

There's an awful lot of deferreds and dictionaries flying around here. The
whole thing can be made much simpler and achieve the same effect.

* Add a delay to key lookup lock release to fix stack overflow

A tactical call_later here should fix #5723

* changelog
 2019-07-22 13:51:22 +01:00
Andrew Morgan
f477ce4b1a v1.2.0rc1 
Features
 --------
 
 - Add support for opentracing. ([\#5544](https://github.com/matrix-org/synapse/issues/5544), [\#5712](https://github.com/matrix-org/synapse/issues/5712))
 - Add ability to pull all locally stored events out of synapse that a particular user can see. ([\#5589](https://github.com/matrix-org/synapse/issues/5589))
 - Add a basic admin command app to allow server operators to run Synapse admin commands separately from the main production instance. ([\#5597](https://github.com/matrix-org/synapse/issues/5597))
 - Add `sender` and `origin_server_ts` fields to `m.replace`. ([\#5613](https://github.com/matrix-org/synapse/issues/5613))
 - Add default push rule to ignore reactions. ([\#5623](https://github.com/matrix-org/synapse/issues/5623))
 - Include the original event when asking for its relations. ([\#5626](https://github.com/matrix-org/synapse/issues/5626))
 - Implement `session_lifetime` configuration option, after which access tokens will expire. ([\#5660](https://github.com/matrix-org/synapse/issues/5660))
 - Return "This account has been deactivated" when a deactivated user tries to login. ([\#5674](https://github.com/matrix-org/synapse/issues/5674))
 - Enable aggregations support by default ([\#5714](https://github.com/matrix-org/synapse/issues/5714))
 
 Bugfixes
 --------
 
 - Fix 'utime went backwards' errors on daemonization. ([\#5609](https://github.com/matrix-org/synapse/issues/5609))
 - Various minor fixes to the federation request rate limiter. ([\#5621](https://github.com/matrix-org/synapse/issues/5621))
 - Forbid viewing relations on an event once it has been redacted. ([\#5629](https://github.com/matrix-org/synapse/issues/5629))
 - Fix requests to the `/store_invite` endpoint of identity servers being sent in the wrong format. ([\#5638](https://github.com/matrix-org/synapse/issues/5638))
 - Fix newly-registered users not being able to lookup their own profile without joining a room. ([\#5644](https://github.com/matrix-org/synapse/issues/5644))
 - Fix bug in #5626 that prevented the original_event field from actually having the contents of the original event in a call to `/relations`. ([\#5654](https://github.com/matrix-org/synapse/issues/5654))
 - Fix 3PID bind requests being sent to identity servers as `application/x-form-www-urlencoded` data, which is deprecated. ([\#5658](https://github.com/matrix-org/synapse/issues/5658))
 - Fix some problems with authenticating redactions in recent room versions. ([\#5699](https://github.com/matrix-org/synapse/issues/5699), [\#5700](https://github.com/matrix-org/synapse/issues/5700), [\#5707](https://github.com/matrix-org/synapse/issues/5707))
 - Ignore redactions of m.room.create events. ([\#5701](https://github.com/matrix-org/synapse/issues/5701))
 
 Updates to the Docker image
 ---------------------------
 
 - Base Docker image on a newer Alpine Linux version (3.8 -> 3.10). ([\#5619](https://github.com/matrix-org/synapse/issues/5619))
 - Add missing space in default logging file format generated by the Docker image. ([\#5620](https://github.com/matrix-org/synapse/issues/5620))
 
 Improved Documentation
 ----------------------
 
 - Add information about nginx normalisation to reverse_proxy.rst. Contributed by @skalarproduktraum - thanks! ([\#5397](https://github.com/matrix-org/synapse/issues/5397))
 - --no-pep517 should be --no-use-pep517 in the documentation to setup the development environment. ([\#5651](https://github.com/matrix-org/synapse/issues/5651))
 - Improvements to Postgres setup instructions. Contributed by @Lrizika - thanks! ([\#5661](https://github.com/matrix-org/synapse/issues/5661))
 - Minor tweaks to postgres documentation. ([\#5675](https://github.com/matrix-org/synapse/issues/5675))
 
 Deprecations and Removals
 -------------------------
 
 - Remove support for the `invite_3pid_guest` configuration setting. ([\#5625](https://github.com/matrix-org/synapse/issues/5625))
 
 Internal Changes
 ----------------
 
 - Move logging code out of `synapse.util` and into `synapse.logging`. ([\#5606](https://github.com/matrix-org/synapse/issues/5606), [\#5617](https://github.com/matrix-org/synapse/issues/5617))
 - Add a blacklist file to the repo to blacklist certain sytests from failing CI. ([\#5611](https://github.com/matrix-org/synapse/issues/5611))
 - Make runtime errors surrounding password reset emails much clearer. ([\#5616](https://github.com/matrix-org/synapse/issues/5616))
 - Remove dead code for persiting outgoing federation transactions. ([\#5622](https://github.com/matrix-org/synapse/issues/5622))
 - Add `lint.sh` to the scripts-dev folder which will run all linting steps required by CI. ([\#5627](https://github.com/matrix-org/synapse/issues/5627))
 - Move RegistrationHandler.get_or_create_user to test code. ([\#5628](https://github.com/matrix-org/synapse/issues/5628))
 - Add some more common python virtual-environment paths to the black exclusion list. ([\#5630](https://github.com/matrix-org/synapse/issues/5630))
 - Some counter metrics exposed over Prometheus have been renamed, with the old names preserved for backwards compatibility and deprecated. See `docs/metrics-howto.rst` for details. ([\#5636](https://github.com/matrix-org/synapse/issues/5636))
 - Unblacklist some user_directory sytests. ([\#5637](https://github.com/matrix-org/synapse/issues/5637))
 - Factor out some redundant code in the login implementation. ([\#5639](https://github.com/matrix-org/synapse/issues/5639))
 - Update ModuleApi to avoid register(generate_token=True). ([\#5640](https://github.com/matrix-org/synapse/issues/5640))
 - Remove access-token support from `RegistrationHandler.register`, and rename it. ([\#5641](https://github.com/matrix-org/synapse/issues/5641))
 - Remove access-token support from `RegistrationStore.register`, and rename it. ([\#5642](https://github.com/matrix-org/synapse/issues/5642))
 - Improve logging for auto-join when a new user is created. ([\#5643](https://github.com/matrix-org/synapse/issues/5643))
 - Remove unused and unnecessary check for FederationDeniedError in _exception_to_failure. ([\#5645](https://github.com/matrix-org/synapse/issues/5645))
 - Fix a small typo in a code comment. ([\#5655](https://github.com/matrix-org/synapse/issues/5655))
 - Clean up exception handling around client access tokens. ([\#5656](https://github.com/matrix-org/synapse/issues/5656))
 - Add a mechanism for per-test homeserver configuration in the unit tests. ([\#5657](https://github.com/matrix-org/synapse/issues/5657))
 - Inline issue_access_token. ([\#5659](https://github.com/matrix-org/synapse/issues/5659))
 - Update the sytest BuildKite configuration to checkout Synapse in `/src`. ([\#5664](https://github.com/matrix-org/synapse/issues/5664))
 - Add a `docker` type to the towncrier configuration. ([\#5673](https://github.com/matrix-org/synapse/issues/5673))
 - Convert `synapse.federation.transport.server` to `async`. Might improve some stack traces. ([\#5689](https://github.com/matrix-org/synapse/issues/5689))
 - Documentation for opentracing. ([\#5703](https://github.com/matrix-org/synapse/issues/5703))
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Merge tag 'v1.2.0rc1' into develop

v1.2.0rc1

Features
--------

- Add support for opentracing. ([\#5544](https://github.com/matrix-org/synapse/issues/5544), [\#5712](https://github.com/matrix-org/synapse/issues/5712))
- Add ability to pull all locally stored events out of synapse that a particular user can see. ([\#5589](https://github.com/matrix-org/synapse/issues/5589))
- Add a basic admin command app to allow server operators to run Synapse admin commands separately from the main production instance. ([\#5597](https://github.com/matrix-org/synapse/issues/5597))
- Add `sender` and `origin_server_ts` fields to `m.replace`. ([\#5613](https://github.com/matrix-org/synapse/issues/5613))
- Add default push rule to ignore reactions. ([\#5623](https://github.com/matrix-org/synapse/issues/5623))
- Include the original event when asking for its relations. ([\#5626](https://github.com/matrix-org/synapse/issues/5626))
- Implement `session_lifetime` configuration option, after which access tokens will expire. ([\#5660](https://github.com/matrix-org/synapse/issues/5660))
- Return "This account has been deactivated" when a deactivated user tries to login. ([\#5674](https://github.com/matrix-org/synapse/issues/5674))
- Enable aggregations support by default ([\#5714](https://github.com/matrix-org/synapse/issues/5714))

Bugfixes
--------

- Fix 'utime went backwards' errors on daemonization. ([\#5609](https://github.com/matrix-org/synapse/issues/5609))
- Various minor fixes to the federation request rate limiter. ([\#5621](https://github.com/matrix-org/synapse/issues/5621))
- Forbid viewing relations on an event once it has been redacted. ([\#5629](https://github.com/matrix-org/synapse/issues/5629))
- Fix requests to the `/store_invite` endpoint of identity servers being sent in the wrong format. ([\#5638](https://github.com/matrix-org/synapse/issues/5638))
- Fix newly-registered users not being able to lookup their own profile without joining a room. ([\#5644](https://github.com/matrix-org/synapse/issues/5644))
- Fix bug in #5626 that prevented the original_event field from actually having the contents of the original event in a call to `/relations`. ([\#5654](https://github.com/matrix-org/synapse/issues/5654))
- Fix 3PID bind requests being sent to identity servers as `application/x-form-www-urlencoded` data, which is deprecated. ([\#5658](https://github.com/matrix-org/synapse/issues/5658))
- Fix some problems with authenticating redactions in recent room versions. ([\#5699](https://github.com/matrix-org/synapse/issues/5699), [\#5700](https://github.com/matrix-org/synapse/issues/5700), [\#5707](https://github.com/matrix-org/synapse/issues/5707))
- Ignore redactions of m.room.create events. ([\#5701](https://github.com/matrix-org/synapse/issues/5701))

Updates to the Docker image
---------------------------

- Base Docker image on a newer Alpine Linux version (3.8 -> 3.10). ([\#5619](https://github.com/matrix-org/synapse/issues/5619))
- Add missing space in default logging file format generated by the Docker image. ([\#5620](https://github.com/matrix-org/synapse/issues/5620))

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

- Add information about nginx normalisation to reverse_proxy.rst. Contributed by @skalarproduktraum - thanks! ([\#5397](https://github.com/matrix-org/synapse/issues/5397))
- --no-pep517 should be --no-use-pep517 in the documentation to setup the development environment. ([\#5651](https://github.com/matrix-org/synapse/issues/5651))
- Improvements to Postgres setup instructions. Contributed by @Lrizika - thanks! ([\#5661](https://github.com/matrix-org/synapse/issues/5661))
- Minor tweaks to postgres documentation. ([\#5675](https://github.com/matrix-org/synapse/issues/5675))

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

- Remove support for the `invite_3pid_guest` configuration setting. ([\#5625](https://github.com/matrix-org/synapse/issues/5625))

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

- Move logging code out of `synapse.util` and into `synapse.logging`. ([\#5606](https://github.com/matrix-org/synapse/issues/5606), [\#5617](https://github.com/matrix-org/synapse/issues/5617))
- Add a blacklist file to the repo to blacklist certain sytests from failing CI. ([\#5611](https://github.com/matrix-org/synapse/issues/5611))
- Make runtime errors surrounding password reset emails much clearer. ([\#5616](https://github.com/matrix-org/synapse/issues/5616))
- Remove dead code for persiting outgoing federation transactions. ([\#5622](https://github.com/matrix-org/synapse/issues/5622))
- Add `lint.sh` to the scripts-dev folder which will run all linting steps required by CI. ([\#5627](https://github.com/matrix-org/synapse/issues/5627))
- Move RegistrationHandler.get_or_create_user to test code. ([\#5628](https://github.com/matrix-org/synapse/issues/5628))
- Add some more common python virtual-environment paths to the black exclusion list. ([\#5630](https://github.com/matrix-org/synapse/issues/5630))
- Some counter metrics exposed over Prometheus have been renamed, with the old names preserved for backwards compatibility and deprecated. See `docs/metrics-howto.rst` for details. ([\#5636](https://github.com/matrix-org/synapse/issues/5636))
- Unblacklist some user_directory sytests. ([\#5637](https://github.com/matrix-org/synapse/issues/5637))
- Factor out some redundant code in the login implementation. ([\#5639](https://github.com/matrix-org/synapse/issues/5639))
- Update ModuleApi to avoid register(generate_token=True). ([\#5640](https://github.com/matrix-org/synapse/issues/5640))
- Remove access-token support from `RegistrationHandler.register`, and rename it. ([\#5641](https://github.com/matrix-org/synapse/issues/5641))
- Remove access-token support from `RegistrationStore.register`, and rename it. ([\#5642](https://github.com/matrix-org/synapse/issues/5642))
- Improve logging for auto-join when a new user is created. ([\#5643](https://github.com/matrix-org/synapse/issues/5643))
- Remove unused and unnecessary check for FederationDeniedError in _exception_to_failure. ([\#5645](https://github.com/matrix-org/synapse/issues/5645))
- Fix a small typo in a code comment. ([\#5655](https://github.com/matrix-org/synapse/issues/5655))
- Clean up exception handling around client access tokens. ([\#5656](https://github.com/matrix-org/synapse/issues/5656))
- Add a mechanism for per-test homeserver configuration in the unit tests. ([\#5657](https://github.com/matrix-org/synapse/issues/5657))
- Inline issue_access_token. ([\#5659](https://github.com/matrix-org/synapse/issues/5659))
- Update the sytest BuildKite configuration to checkout Synapse in `/src`. ([\#5664](https://github.com/matrix-org/synapse/issues/5664))
- Add a `docker` type to the towncrier configuration. ([\#5673](https://github.com/matrix-org/synapse/issues/5673))
- Convert `synapse.federation.transport.server` to `async`. Might improve some stack traces. ([\#5689](https://github.com/matrix-org/synapse/issues/5689))
- Documentation for opentracing. ([\#5703](https://github.com/matrix-org/synapse/issues/5703))
 2019-07-22 13:49:16 +01:00
Jason Robinson
66f5ff72fd Add user_type to returned fields in admin API user list endpoints 
Mostly user type will be empty (normal user) but there is also the
"support" user type.

Signed-off-by: Jason Robinson <jasonr@matrix.org>
 2019-07-22 15:29:18 +03:00
Erik Johnston
2017369f7d Newsfile 2019-07-22 13:18:25 +01:00
Andrew Morgan
8b0d5b171e Make changelog slightly more readable 2019-07-22 13:15:35 +01:00
Erik Johnston
5ea773c505 Cache get_version_string. 
The version of a module isn't going to change over the lifetime of the
process (assuming no funky hot reloading is going on, which it isn't),
so let's just cache the result to avoid spawning lots of git
subprocesses.

Fixes #5672.
 2019-07-22 13:15:08 +01:00
Andrew Morgan
54437c48ca 1.2.0rc1 2019-07-22 12:59:04 +01:00
Jorik Schellekens
f337d2f0f0
Demo uses deprecated cli option (#5725) 
* Remove deprecated 'verbose' cli arg

* Create 5725.bugfix
 2019-07-22 11:31:05 +01:00
Jorik Schellekens
0fd171770a Merge branch 'release-v1.2.0' into develop 2019-07-22 11:18:50 +01:00
Jorik Schellekens
826e6ec3bd
Opentracing Documentation (#5703) 
* Opentracing survival guide

* Update decorator names in doc

* Doc cleanup

These are all alterations as a result of comments in #5703, it
includes mostly typos and clarifications. The most interesting
changes are:

- Split developer and user docs into two sections
- Add a high level description of OpenTracing

* newsfile

* Move contributer specific info to docstring.

* Sample config.

* Trailing whitespace.

* Update 5703.misc

* Apply suggestions from code review

Mostly just rewording parts of the docs for clarity.

Co-Authored-By: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
 2019-07-22 11:15:21 +01:00
Jorik Schellekens
f99554b15d Revert "Remove deprecated 'verbose' cli arg" 
This reverts commit dc7cf81267.
 2019-07-19 18:19:27 +01:00
Jorik Schellekens
dc7cf81267 Remove deprecated 'verbose' cli arg 2019-07-19 18:16:42 +01:00
Richard van der Hoff
f214bff0c0 changelog 2019-07-19 17:58:17 +01:00
Richard van der Hoff
dcca56baba Add a delay to key lookup lock release to fix stack overflow 
A tactical call_later here should fix #5723
 2019-07-19 17:57:00 +01:00
Richard van der Hoff
c7095be913 Refactor Keyring._start_key_lookups 
There's an awful lot of deferreds and dictionaries flying around here. The
whole thing can be made much simpler and achieve the same effect.
 2019-07-19 17:49:19 +01:00
Erik Johnston
7704873cb8
Merge pull request #5720 from matrix-org/erikj/transactions_upsert 
Use upsert when updating destination retry interval
 2019-07-19 16:51:16 +01:00
Erik Johnston
d7bd9651bc
Merge pull request #5713 from matrix-org/erikj/use_cache_for_filtered_state 
Delegate to cached version when using get_filtered_current_state_ids
 2019-07-19 16:30:49 +01:00
Erik Johnston
5c07c97c09
Merge pull request #5706 from matrix-org/erikj/add_memberships_to_current_state 
Add membership column to current_state_events table
 2019-07-19 16:30:33 +01:00
Jorik Schellekens
7b8bc61834
Don't accept opentracing data from clients. (#5715) 
* Don't accept opentracing data from clients.

* newsfile
 2019-07-19 16:29:57 +01:00
Erik Johnston
ced4fdaa84 Newsfile 2019-07-19 13:40:26 +01:00
Erik Johnston
2410335507 Use upsert when updating destination retry interval 2019-07-19 13:40:24 +01:00
Erik Johnston
bd2e1a2aa8 LoggingTransaction accepts None for callback lists. 
Its a bit disingenuousto give LoggingTransaction lists to append
callbacks to if we're not going to run the callbacks.
 2019-07-19 13:36:04 +01:00
Erik Johnston
ebc5ed1296 Update comment for new column 2019-07-19 13:29:02 +01:00
Neil Johnson
5c05ae7ba0 Add 'rel' attribute to default welcome page. (#5695) 
add rel attribute as a precaution against reverse tabnabbing in future
 2019-07-19 12:03:36 +01:00
Richard van der Hoff
b73ce4ba81
Update the coding style doc (#5719) 
A few fixes and removal of duplicated stuff, but mostly a bunch of the words on the config file.
 2019-07-19 11:55:14 +01:00
Amber Brown
356ed0438e
Speed up the PostgreSQL unit tests (#5717) 2019-07-19 19:01:23 +10:00
Amber Brown
6a85cb5ef7
Remove non-dedicated logging options and command line arguments (#5678) 2019-07-19 01:40:08 +10:00
Neil Johnson
a3e40bd5b4 towncrier 2019-07-18 16:02:09 +01:00
Neil Johnson
cfc00068bd enable aggregations support by default 2019-07-18 15:56:59 +01:00
Erik Johnston
dd2851d576 Newsfile 2019-07-18 15:27:18 +01:00
Erik Johnston
10523241d8 Delegate to cached version when using get_filtered_current_state_ids 
In the case where it gets called with `StateFilter.all()`
 2019-07-18 15:17:39 +01:00
Richard van der Hoff
82345bc09a
Clean up opentracing configuration options (#5712) 
Clean up config settings and dead code.

This is mostly about cleaning up the config format, to bring it into line with our conventions. In particular:
 * There should be a blank line after `## Section ##' headings
 * There should be a blank line between each config setting
 * There should be a `#`-only line between a comment and the setting it describes
 * We don't really do the `#  #` style commenting-out of whole sections if we can help it
 * rename `tracer_enabled` to `enabled`

While we're here, do more config parsing upfront, which makes it easier to use
later on.

Also removes redundant code from LogContextScopeManager.

Also changes the changelog fragment to a `feature` - it's exciting!
 2019-07-18 15:06:54 +01:00
Amber Brown
7ad1d76356
Support Prometheus_client 0.4.0+ (#5636) 2019-07-18 23:57:15 +10:00
Andrew Morgan
b2a382efdb
Remove the ability to query relations when the original event was redacted. (#5629) 
Fixes #5594

Forbid viewing relations on an event once it has been redacted.
 2019-07-18 14:41:42 +01:00
Erik Johnston
89c885909a Newsfile 2019-07-18 14:16:01 +01:00
Erik Johnston
8e1ada9e6f Use the current_state_events.membership column 2019-07-18 14:16:01 +01:00
Erik Johnston
059d8c1a4e Track if current_state_events.membership is up to date 2019-07-18 14:16:01 +01:00
Erik Johnston
c618a5d348 Add background update for current_state_events.membership column 2019-07-18 14:16:01 +01:00
Erik Johnston
6de09e07a6 Add membership column to current_state_events table. 
It turns out that doing a join is surprisingly expensive for the DB to
do when room_membership table is larger than the disk cache.
 2019-07-18 14:15:57 +01:00
Richard van der Hoff
fa8271c5ac
Convert synapse.federation.transport.server to async (#5689) 
* Convert BaseFederationServlet._wrap to async

Empirically, this fixes some lost stacktraces. It should be safe because the
wrapped function is called from JsonResource._async_render, which is already
async.

* Convert the rest of synapse.federation.transport.server to async

We may as well do the whole file while we're here.

* changelog

* flake8
 2019-07-18 11:46:47 +01:00
Richard van der Hoff
9c70a02a9c
Ignore redactions of m.room.create events (#5701) 2019-07-17 19:08:02 +01:00
Richard van der Hoff
1def298119
Improve Depends specs in debian package. (#5675) 
This is basically a contrived way of adding a `Recommends` on `libpq5`, to fix #5653.

The way this is supposed to happen in debhelper is to run
`dh_shlibdeps`, which in turn runs `dpkg-shlibdeps`, which spits things out
into `debian/<package>.substvars` whence they can later be included by
`control`.

Previously, we had disabled `dh_shlibdeps`, mostly because `dpkg-shlibdeps`
gets confused about PIL's interdependent objects, but that's not really the
right thing to do and there is another way to work around that.

Since we don't always use postgres, we don't necessarily want a hard Depends on
libpq5, so I've actually ended up adding an explicit invocation of
`dpkg-shlibdeps` for `psycopg2`.

I've also updated the build-depends list for the package, which was missing a
couple of entries.
 2019-07-17 17:47:07 +01:00
Richard van der Hoff
2091c91fde
More refactoring in get_events_as_list (#5707) 
We can now use `_get_events_from_cache_or_db` rather than going right back to
the database, which means that (a) we can benefit from caching, and (b) it
opens the way forward to more extensive checks on the original event.

We now always require the original event to exist before we will serve up a
redaction.
 2019-07-17 17:34:13 +01:00
Richard van der Hoff
375162b3c3
Fix redaction authentication (#5700) 
Ensures that redactions are correctly authenticated for recent room versions.

There are a few things going on here:

 * `_fetch_event_rows` is updated to return a dict rather than a list of rows.

 * Rather than returning multiple copies of an event which was redacted
   multiple times, it returns the redactions as a list within the dict.

 * It also returns the actual rejection reason, rather than merely the fact
   that it was rejected, so that we don't have to query the table again in
   `_get_event_from_row`.

 * The redaction handling is factored out of `_get_event_from_row`, and now
   checks if any of the redactions are valid.
 2019-07-17 16:52:02 +01:00
Richard van der Hoff
65c5592b8e
Refactor get_events_as_list (#5699) 
A couple of changes here:

* get rid of a redundant `allow_rejected` condition - we should already have filtered out any rejected
  events before we get to that point in the code, and the redundancy is confusing. Instead, let's stick in
  an assertion just to make double-sure we aren't leaking rejected events by mistake.

* factor out a `_get_events_from_cache_or_db` method, which is going to be important for a 
  forthcoming fix to redactions.
 2019-07-17 16:49:19 +01:00