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Clean up handling of errors from outbound requests
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This code brings the SimpleHttpClient into line with the
MatrixFederationHttpClient by having it raise HttpResponseExceptions when a
request fails (rather than trying to parse for matrix errors and maybe raising
MatrixCodeMessageException).
Then, whenever we were checking for MatrixCodeMessageException and turning them
into SynapseErrors, we now need to check for HttpResponseExceptions and call
to_synapse_error.
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This commit replaces SynapseError.from_http_response_exception with
HttpResponseException.to_synapse_error.
The new method actually returns a ProxiedRequestError, which allows us to pass
through additional metadata from the API call.
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We really shouldn't be sending all CodeMessageExceptions back over the C-S API;
it will include things like 401s which we shouldn't proxy.
That means that we need to explicitly turn a few HttpResponseExceptions into
SynapseErrors in the federation layer.
The effect of the latter is that the matrix errcode will get passed through
correctly to calling clients, which might help with some of the random
M_UNKNOWN errors when trying to join rooms.
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matrix-org/rav/refactor_federation_client_exception_handling
Factor out exception handling in federation_client
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Factor out the error handling from make_membership_event, send_join, and
send_leave, so that it can be shared.
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Synapse 0.33.1 (2018-08-02)
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SECURITY FIXES
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- Fix a potential issue where servers could request events for rooms they have not joined. (`#3641 <https://github.com/matrix-org/synapse/issues/3641>`_)
- Fix a potential issue where users could see events in private rooms before they joined. (`#3642 <https://github.com/matrix-org/synapse/issues/3642>`_)
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Make sure that the user has permission to view the requeseted event for
/event/{eventId} and /room/{roomId}/event/{eventId} requests.
Also check that the event is in the given room for
/room/{roomId}/event/{eventId}, for sanity.
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Since we're about to look up the events themselves anyway, we can skip the
extra db queries here.
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When we get a federation request which refers to an event id, make sure that
said event is in the room the caller claims it is in.
(patch supplied by @turt2live)
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document that the affinity package is required for the cpu_affinity setting
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Split out DB writes in federation handler
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erikj/split_fed_store
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This will allow us to easily add an internal replication API to proxy
these reqeusts to master, so that we can move federation APIs to
workers.
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neilj/mau_tracker
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This reverts commit ec716a35b219d147dee51733b55573952799a549.
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Initial impl of capping MAU
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neilj/mau_sign_in_log_in_limits
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return 404 if room not found
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Per the Client-Server API[0] we should return
`M_NOT_FOUND` if the room isn't found instead
of generic SynapseError.
This ensures that /directory/list API returns
404 for room not found instead of 400.
[0]: https://matrix.org/docs/spec/client_server/unstable.html#get-matrix-client-r0-directory-list-room-roomid
Signed-off-by: Serban Constantin <serban.constantin@gmail.com>
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rename replication_layer to federation_client
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I have HAD ENOUGH of trying to remember wtf a replication layer is in terms of
classes.
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Rewrite cache list decorator
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Because it was complicated and annoyed me. I suspect this will be more
efficient too.
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Remove pdu_failures from transactions
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The field is never read from, and all the opportunities given to populate it are not utilized. It should be very safe to remove this.
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Make EventStore inherit from EventFederationStore
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(since it uses methods therein)
Turns out that we had a bunch of things which were incorrectly importing
EventWorkerStore from events.py rather than events_worker.py, which broke once
I removed the import into events.py.
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secrets got introduced in python 3.6 so this class is not available
in 3.5 and before.
This now checks for the current running version and only tries using
secrets if the version is 3.6 or above
Signed-Off-By: Matthias Kesler <krombel@krombel.de>
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make /context lazyload & filter aware.
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if inviter_display_name == ""||None then default to inviter MXID
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t3chguy/default_inviter_display_name_3pid
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to prevent email invite from "None"
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Update the send_leave path to be an event_id
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It's still not used, however the parameter is an event ID not a transaction ID.
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Stop populating events.content
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There's no real point in ever making the column non-nullable, and doing so
breaks the sytests.
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This field is no longer read from, so we should stop populating it. Once we're
happy that this doesn't break everything, and a rollback is unlikely, we can
think about dropping the column.
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* attempt at deduplicating lazy-loaded members
as per the proposal; we can deduplicate redundant lazy-loaded members
which are sent in the same sync sequence. we do this heuristically
rather than requiring the client to somehow tell us which members it
has chosen to cache, by instead caching the last N members sent to
a client, and not sending them again. For now we hardcode N to 100.
Each cache for a given (user,device) tuple is in turn cached for up to
X minutes (to avoid the caches building up). For now we hardcode X to 30.
* add include_redundant_members filter option & make it work
* remove stale todo
* add tests for _get_some_state_from_cache
* incorporate review
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Remove some redundant joins on event_edges.room_id
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We've long passed the point where it's possible to have the same event_id in
different tables, so these join conditions are redundant: we can just join on
event_id.
event_edges is of non-trivial size, and the room_id column is wasteful, so
let's stop reading from it. In future, we can stop writing to it, and then drop
it.
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Fix some looping_call calls which were broken in #3604
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It turns out that looping_call does check the deferred returned by its
callback, and (at least in the case of client_ips), we were relying on this,
and I broke it in #3604.
Update run_as_background_process to return the deferred, and make sure we
return it to clock.looping_call.
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Implement the lazy_load_members room state filter parameter
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state-group-cache
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fixes build on macOS again
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when type filter includes wildcards on state_key
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and fix include_other_types thinko
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Correctly handle outliers during persist events
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We incorrectly asserted that all contexts must have a non None state
group without consider outliers. This would usually be fine as the
assertion would never be hit, as there is a shortcut during persistence
if the forward extremities don't change.
However, if the outlier is being persisted with non-outlier events, the
function would be called and the assertion would be hit.
Fixes #3601
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Fix another logcontext leak in _persist_events
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We need to run the errback in the sentinel context to avoid losing our own
context.
Also: add logging to runInteraction to help identify where "Starting db
connection from sentinel context" warnings are coming from
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Fix occasional 'tuple index out of range' error
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This fixes a bug in _delete_existing_rows_txn which was introduced in #3435
(though it's been on matrix-org-hotfixes for *years*). This code is only called
when there is some sort of conflict the first time we try to persist an event,
so it only happens rarely. Still, the exceptions are annoying.
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Fix updating of cached remote profiles
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_update_remote_profile_cache was missing its `defer.inlineCallbacks`, so when
it was called, would just return a generator object, without actually running
any of the method body.
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on_notifier_poke no longer runs synchonously, so we have to do a different hack
to make sure that the replication data has been sent. Let's actually listen for
its arrival.
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This will reduce the number of "Starting db connection from sentinel context"
warnings, and will help with our metrics.
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This allows us to handle /context/ requests on the client_reader worker
without having to pull in all the various stream handlers (e.g.
precence, typing, pushers etc). The only thing the token gets used for
is pagination, and that ignores everything but the room portion of the
token.
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Use deltas to calculate current state deltas
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If we have a delta from the existing to new current state, then we can
reuse that rather than manually working it out by fetching both lots of
state.
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Improve logging for exceptions when handling PDUs
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when we get an exception handling a federation PDU, log the whole stacktrace.
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Fixes and optimisations for resolve_state_groups
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it's easier to create the new state group as a delta from the existing one.
(There's an outside chance this will help with
https://github.com/matrix-org/synapse/issues/3364)
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First of all, fix the logic which looks for identical input state groups so
that we actually use them. This turned out to be most easily done by factoring
the relevant code out to a separate function so that we could do an early
return.
Secondly, avoid building the whole `conflicted_state` dict (which was only ever
used as a boolean flag).
Thirdly, replace the construction of the `state` dict (which mapped from keys
to events that set them), with an optimistic construction of the resolution
result assuming there will be no conflicts. This should be no slower than
building the old `state` dict, and:
- in the conflicted case, we'll short-cut it, saving part of the work
- in the unconflicted case, it saves rebuilding the resolution from the
`state` dict.
Finally, do a couple of s/values/itervalues/.
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Remove redundant checks on room forgottenness
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Fixes #3550
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erikj/speed_up_calculate_state_delta
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Make client_reader support some more read only APIs
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erikj/client_apis_move
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This is in preparation for moving GET /context/ to a worker
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This will let us call the read only parts from workers, and so be able
to move some APIs off of master, e.g. the `/state` API.
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... to help us figure out where 40% of CPU is going
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Fix some random logcontext leaks.
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We don't want to bother pulling out the current state from the DB since
until we know we have to. Checking the context for state is just an
optimisation.
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This was missed during the transition from attribute to getter for
getting state from context.
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We were:
1. Not correctly setting all attributes
2. Using defer.inlineCallbacks in a non-generator
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A set of improvements to the Limiter
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Linearizer was effectively a Limiter with max_count=1, so rather than
maintaining two sets of code, let's combine them.
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* give them names, to improve logging
* use a deque rather than a list for efficiency
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Fixes #3570
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... we've fixed the things that caused the warnings, so we should reinstate the
warning.
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Temporary workaround to #3518 while we release 0.33.0.
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Run things as background processes
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This is more involved than it might otherwise be, because the current
implementation just drops its logcontexts and runs everything in the sentinel
context.
It turns out that we aren't actually using a bunch of the functionality here
(notably suppress_failures and the fact that Distributor.fire returns a
deferred), so the easiest way to fix this is actually by simplifying a bunch of
code.
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This fixes #3518, and ensures that we get useful logs and metrics for lots of
things that happen in the background.
(There are certainly more things that happen in the background; these are just
the common ones I've found running a single-process synapse locally).
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Add response code to response timer metrics
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Resource tracking for background processes
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This introduces a mechanism for tracking resource usage by background
processes, along with an example of how it will be used.
This will help address #3518, but more importantly will give us better insights
into things which are happening but not being shown up by the request metrics.
We *could* do this with Measure blocks, but:
- I think having them pulled out as a completely separate metric class will
make it easier to distinguish top-level processes from those which are
nested.
- I want to be able to report on in-flight background processes, and I don't
think we want to do this for *all* Measure blocks.
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Remove event re-signing hacks
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These "temporary fixes" have been here three and a half years, and I can't find
any events in the matrix.org database where the calculated signature differs
from what's in the db. It's time for them to go away.
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Comment dummy TURN parameters in default config
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This default config is parsed and used a base before the actual
config is overlaid, so with these values not commented out, the
code to detect when no turn params were set and refuse to generate
credentials was never firing because the dummy default was always set.
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Refactor and optimze filter_events_for_server
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for easier unit testing.
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The get_entities_changed function was changed to return all changed
entities since the given stream position, rather than only those changed
from a given list of entities. This resulted in the function incorrectly
returning large numbers of entities that, for example, caused large
increases in database usage.
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Don't return unknown entities in get_entities_changed
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The stream cache keeps track of all entities that have changed since
a particular stream position, so get_entities_changed does not need to
return unknown entites when given a larger stream position.
This makes it consistent with the behaviour of has_entity_changed.
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Use parse and asserts from http.servlet
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the method "assert_params_in_request" does handle dicts and not
requests. A request body has to be parsed to json before this method
can be used
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parse_integer and parse_string can take a request and raise errors
in case we have wrong or missing params.
This PR tries to use them more to deduplicate some code and make it
better readable
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Make FederationRateLimiter queue requests properly
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popitem removes the *most recent* item by default [1]. We want the oldest.
Fixes #3524
[1]: https://docs.python.org/2/library/collections.html#collections.OrderedDict.popitem
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Reduce set building in get_entities_changed
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This line shows up as about 5% of cpu time on a synchrotron:
not_known_entities = set(entities) - set(self._entity_to_key)
Presumably the problem here is that _entity_to_key can be largeish, and
building a set for its keys every time this function is called is slow.
Here we rewrite the logic to avoid building so many sets.
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Use stream cache in get_linearized_receipts_for_room
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This avoids us from uncessarily hitting the database when there has been
no change for the room
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