Erik Johnston
6745b7de6d
Handle failing to talk to master over replication
2019-06-07 10:47:31 +01:00
Erik Johnston
5dbff34509
Fixup bsaed on review comments
2019-05-17 15:48:04 +01:00
Erik Johnston
d46aab3fa8
Add basic editing support
2019-05-16 16:54:45 +01:00
Erik Johnston
b5c62c6b26
Fix relations in worker mode
2019-05-16 10:38:13 +01:00
Richard van der Hoff
f50efcb65d
Replace SlavedKeyStore with a shim
...
since we're pulling everything out of KeyStore anyway, we may as well simplify
it.
2019-04-08 23:59:07 +01:00
Richard van der Hoff
3352baac4b
Remove unused server_tls_certificates functions ( #5028 )
...
These have been unused since #4120 , and with the demise of perspectives, it is
unlikely that they will ever be used again.
2019-04-08 21:50:18 +01:00
Neil Johnson
e8419554ff
Remove presence lists ( #4989 )
...
Remove presence list support as per MSC 1819
2019-04-03 11:11:15 +01:00
Richard van der Hoff
297bf2547e
Fix sync bug when accepting invites ( #4956 )
...
Hopefully this time we really will fix #4422 .
We need to make sure that the cache on
`get_rooms_for_user_with_stream_ordering` is invalidated *before* the
SyncHandler is notified for the new events, and we can now do so reliably via
the `events` stream.
2019-04-02 12:42:39 +01:00
Richard van der Hoff
4b91c313a9
Combine the CurrentStateDeltaStream into the EventStream
2019-03-27 22:07:05 +00:00
Richard van der Hoff
1f6d6f918a
Make EventStream rows have a type
...
... as a precursor to combining it with the CurrentStateDelta stream.
2019-03-27 22:07:05 +00:00
Richard van der Hoff
015b3622eb
Skip building a ROW_TYPE when building updates
...
We're about to turn it straight into a JSON object anyway so building a
ROW_TYPE is a bit pointless, and reduces flexibility in the update_function.
2019-03-27 21:58:03 +00:00
Richard van der Hoff
f570916a3e
Add parse_row method to replication stream class
...
This will allow individual stream classes to override how a row is parsed.
2019-03-27 21:32:33 +00:00
Richard van der Hoff
71dcb275f1
move FederationStream out to its own file
2019-03-27 21:13:14 +00:00
Richard van der Hoff
aa1e017864
move EventsStream out to its own file
2019-03-27 21:13:14 +00:00
Richard van der Hoff
a5798de067
Move replication.tcp.streams into a package
2019-03-27 21:13:14 +00:00
Richard van der Hoff
acaa18f7dd
Fix/improve some docstrings in the replication code. ( #4949 )
2019-03-27 21:12:36 +00:00
Richard van der Hoff
8cbbedaa2b
Fix ClientReplicationStreamProtocol.__str__ ( #4929 )
...
`__str__` depended on `self.addr`, which was absent from
ClientReplicationStreamProtocol, so attempting to call str on such an object
would raise an exception.
We can calculate the peer addr from the transport, so there is no need for addr
anyway.
2019-03-25 16:41:51 +00:00
Richard van der Hoff
9bde730ef8
Fix bug where read-receipts lost their timestamps ( #4927 )
...
Make sure that they are sent correctly over the replication stream.
Fixes : #4898
2019-03-25 16:38:05 +00:00
Richard van der Hoff
cdb8036161
Add a config option for torture-testing worker replication. ( #4902 )
...
Setting this to 50 or so makes a bunch of sytests fail in worker mode.
2019-03-20 16:04:35 +00:00
Erik Johnston
face0c5b3c
Prefill client IPs cache on workers
2019-03-06 17:39:32 +00:00
Andrew Morgan
7b8a157b79
Merge pull request #4792 from matrix-org/anoa/replication_tokens
...
Support batch updates in the worker sender
2019-03-06 15:48:29 +00:00
Brendan Abolivier
a4c3a361b7
Add rate-limiting on registration ( #4735 )
...
* Rate-limiting for registration
* Add unit test for registration rate limiting
* Add config parameters for rate limiting on auth endpoints
* Doc
* Fix doc of rate limiting function
Co-Authored-By: babolivier <contact@brendanabolivier.com>
* Incorporate review
* Fix config parsing
* Fix linting errors
* Set default config for auth rate limiting
* Fix tests
* Add changelog
* Advance reactor instead of mocked clock
* Move parameters to registration specific config and give them more sensible default values
* Remove unused config options
* Don't mock the rate limiter un MAU tests
* Rename _register_with_store into register_with_store
* Make CI happy
* Remove unused import
* Update sample config
* Fix ratelimiting test for py2
* Add non-guest test
2019-03-05 14:25:33 +00:00
Andrew Morgan
b9f6163092
Simplify token replication logic
2019-03-05 13:58:30 +00:00
Erik Johnston
a84b8d56c2
Fixup slave stores
2019-03-04 18:04:57 +00:00
Andrew Morgan
fe7bd23a85
Clean up logic and add comments
2019-03-04 15:08:15 +00:00
Andrew Morgan
9f7cdf3da1
Clearer branching, fix missing list clear
2019-03-04 14:36:52 +00:00
Andrew Morgan
5f0c449dd5
Prevent replication wedging
2019-03-04 14:03:18 +00:00
Erik Johnston
1e315017d3
When presence is enabled don't send over replication
2019-02-27 13:53:46 +00:00
Erik Johnston
7590e9fa28
Merge pull request #4749 from matrix-org/erikj/replication_connection_backoff
...
Fix tightloop over connecting to replication server
2019-02-27 11:00:59 +00:00
Erik Johnston
6bb1c028f1
Limit cache invalidation replication line length ( #4748 )
2019-02-27 10:28:37 +00:00
Erik Johnston
6870fc496f
Move connecting logic into ClientReplicationStreamProtocol
2019-02-27 10:23:51 +00:00
Erik Johnston
25814921f1
Increase the max delay between retry attempts
...
Otherwise if you have many workers they can easily take out master with
their connection attempts
2019-02-26 15:12:33 +00:00
Erik Johnston
313987187e
Fix tightloop over connecting to replication server
...
If the client failed to process incoming commands during the initial set
up of the replication connection it would immediately disconnect and
reconnect, resulting in a tightloop.
This can happen, for example, when subscribing to a stream that has a
row that is too long in the backlog.
The fix here is to not consider the connection successfully set up until
the client has succesfully subscribed and caught up with the streams.
This ensures that the retry logic timers aren't reset until then,
meaning that if an error does happen during start up the client will
continue backing off before retrying again.
2019-02-26 15:05:41 +00:00
Erik Johnston
80467bbac3
Fix state cache invalidation on workers
2019-02-22 14:38:14 +00:00
Erik Johnston
dbdc565dfd
Fix registration on workers ( #4682 )
...
* Move RegistrationHandler init to HomeServer
* Move post registration actions to RegistrationHandler
* Add post regisration replication endpoint
* Newsfile
2019-02-20 18:47:31 +11:00
Erik Johnston
a9b5ea6fc1
Batch cache invalidation over replication
...
Currently whenever the current state changes in a room invalidate a lot
of caches, which cause *a lot* of traffic over replication. Instead,
lets batch up all those invalidations and send a single poke down
the replication streams.
Hopefully this will reduce load on the master process by substantially
reducing traffic.
2019-02-18 17:53:31 +00:00
Erik Johnston
af691e415c
Move register_device into handler
2019-02-18 16:49:38 +00:00
Erik Johnston
eb2b8523ae
Split out registration to worker
...
This allows registration to be handled by a worker, though the actual
write to the database still happens on master.
Note: due to the in-memory session map all registration requests must be
handled by the same worker.
2019-02-18 12:12:57 +00:00
Erik Johnston
a4f52a33fe
Fix replication for room v3 ( #4523 )
...
* Fix replication for room v3
We were not correctly quoting the path fragments over http replication,
which meant that it exploded when the event IDs had a slash in them
* Newsfile
2019-01-30 14:19:52 +00:00
Erik Johnston
b6b73a0bcf
Fix receiving events from federation via a worker
...
This bug was introduced in PR #4470 , commit 678a92cb56
2019-01-29 10:30:26 +00:00
Erik Johnston
678a92cb56
Replace missed usages of FrozenEvent
2019-01-25 10:32:30 +00:00
Erik Johnston
be6a7e47fa
Revert "Require event format version to parse or create events"
2019-01-25 10:23:51 +00:00
Erik Johnston
e8c9f15397
Replace missed usages of FrozenEvent
2019-01-24 11:14:07 +00:00
Erik Johnston
a163b748a5
Don't truncate command name in metrics
2018-10-29 17:34:21 +00:00
Amber Brown
c4b3698a80
Make the replication logger quieter ( #4108 )
2018-10-29 22:59:44 +11:00
Amber Brown
381d2cfdf0
Make workers work on Py3 ( #4027 )
2018-10-13 00:14:08 +11:00
Travis Ralston
f1a7264663
Fix minor typo in exception
2018-09-13 11:51:12 -06:00
Amber Brown
7c27c4d51c
merge ( #3576 )
2018-09-14 03:11:11 +10:00
Erik Johnston
3e242dc149
Remove conn_id
2018-09-04 11:45:52 +01:00
Erik Johnston
b13836da7f
Remove conn_id from repl prometheus metrics
...
`conn_id` gets set to a random string, and so we end up filling up
prometheus with tonnes of data series, which is bad.
2018-09-03 17:22:49 +01:00
Erik Johnston
2aa7cc6a46
Merge pull request #3713 from matrix-org/erikj/fixup_fed_logging
...
Fix logging bug in EDU handling over replication
2018-08-20 10:51:45 +01:00
Erik Johnston
3b2dcfff78
Fix logging bug in EDU handling over replication
2018-08-17 11:11:06 +01:00
Richard van der Hoff
0e8d78f6aa
Logcontexts for replication command handlers
...
Run the handlers for replication commands as background processes. This should
improve the visibility in our metrics, and reduce the number of "running db
transaction from sentinel context" warnings.
Ideally it means converting the things that fire off deferreds into the night
into things that actually return a Deferred when they are done. I've made a bit
of a stab at this, but it will probably be leaky.
2018-08-17 00:43:43 +01:00
Erik Johnston
488ffe6fdb
Use federation handler function rather than duplicate
...
This involves renaming _persist_events to be a public function.
2018-08-15 14:17:18 +01:00
Erik Johnston
773db62a22
Rename slave TransactionStore to SlaveTransactionStore
2018-08-15 14:17:06 +01:00
Erik Johnston
b179537f2a
Move clean_room_for_join to master
2018-08-09 10:37:38 +01:00
Erik Johnston
72d1902bbe
Fixup doc comments
2018-08-09 10:23:49 +01:00
Erik Johnston
5785b93711
Merge branch 'develop' of github.com:matrix-org/synapse into erikj/split_federation
2018-08-09 10:16:16 +01:00
Erik Johnston
2bdafaf3c1
Merge pull request #3632 from matrix-org/erikj/refactor_repl_servlet
...
Add helper base class for generating new replication endpoints
2018-08-09 10:06:23 +01:00
Erik Johnston
62564797f5
Fixup wording and remove dead code
2018-08-09 09:56:10 +01:00
Erik Johnston
bebe325e6c
Rename POST param to METHOD
2018-08-08 10:36:18 +01:00
Erik Johnston
5011417632
Fixup logging and docstrings
2018-08-08 10:29:58 +01:00
Erik Johnston
1e2bed9656
Import all functions from TransactionStore
2018-08-06 15:23:38 +01:00
Erik Johnston
a3f5bf79a0
Add EDU/query handling over replication
2018-08-06 15:23:31 +01:00
Erik Johnston
e26dbd82ef
Add replication APIs for persisting federation events
2018-08-06 15:02:28 +01:00
Erik Johnston
051a99c400
Fix isort
2018-08-06 14:29:31 +01:00
Richard van der Hoff
0ca459ea33
Basic support for room versioning
...
This is the first tranche of support for room versioning. It includes:
* setting the default room version in the config file
* new room_version param on the createRoom API
* storing the version of newly-created rooms in the m.room.create event
* fishing the version of existing rooms out of the m.room.create event
2018-08-03 16:08:32 +01:00
Erik Johnston
cb298ff623
Merge branch 'develop' of github.com:matrix-org/synapse into erikj/refactor_repl_servlet
2018-08-03 09:25:15 +01:00
Richard van der Hoff
01e93f48ed
Kill off MatrixCodeMessageException
...
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.
2018-08-01 16:02:46 +01:00
Erik Johnston
443da003bc
Use new helper base class for membership requests
2018-07-31 14:32:23 +01:00
Erik Johnston
729b672823
Use new helper base class for ReplicationSendEventRestServlet
2018-07-31 14:32:23 +01:00
Erik Johnston
d81602b75a
Add helper base class for generating new replication endpoints
...
This will hopefully reduce the boiler plate required to implement new
internal HTTP requests.
2018-07-31 14:32:20 +01:00
Richard van der Hoff
f59be4eb0e
Fix unit tests
...
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.
2018-07-25 10:30:36 +01:00
Richard van der Hoff
371da42ae4
Wrap a number of things that run in the background
...
This will reduce the number of "Starting db connection from sentinel context"
warnings, and will help with our metrics.
2018-07-25 09:41:12 +01:00
Erik Johnston
0faa3223cd
Fix missing attributes on workers.
...
This was missed during the transition from attribute to getter for
getting state from context.
2018-07-23 16:28:00 +01:00
Erik Johnston
05f5dabc10
Use stream cache in get_linearized_receipts_for_room
...
This avoids us from uncessarily hitting the database when there has been
no change for the room
2018-07-10 17:22:42 +01:00
Amber Brown
49af402019
run isort
2018-07-09 16:09:20 +10:00
Amber Brown
6350bf925e
Attempt to be more performant on PyPy ( #3462 )
2018-06-28 14:49:57 +01:00
Erik Johnston
33fdcfa957
Merge pull request #3441 from matrix-org/erikj/redo_erasure
...
Fix user erasure and re-enable
2018-06-25 14:37:01 +01:00
Erik Johnston
eb50c44eaf
Add UserErasureWorkerStore to workers
2018-06-25 14:22:24 +01:00
Amber Brown
07cad26d65
Remove all global reactor imports & pass it around explicitly ( #3424 )
2018-06-25 14:08:28 +01:00
Amber Brown
77ac14b960
Pass around the reactor explicitly ( #3385 )
2018-06-22 09:37:10 +01:00
Amber Brown
99b77aa829
Fix tcp protocol metrics naming ( #3410 )
2018-06-21 09:39:27 +01:00
Richard van der Hoff
b7e7fd2d0e
Fix replication metrics
...
fix bug introduced in #3256
2018-06-04 16:23:05 +01:00
Amber Brown
754826a830
Merge remote-tracking branch 'origin/develop' into 3218-official-prom
2018-05-28 18:57:23 +10:00
Amber Brown
1f69693347
Merge pull request #3244 from NotAFile/py3-six-4
...
replace some iteritems with six
2018-05-24 13:04:07 -05:00
Amber Brown
b6063631c3
more cleanup
2018-05-22 17:36:20 -05:00
Amber Brown
228f1f584e
fix the test failures
2018-05-22 15:02:38 -05:00
Amber Brown
8f5a688d42
cleanups, self-registration
2018-05-22 10:56:03 -05:00
Amber Brown
a8990fa2ec
Merge remote-tracking branch 'origin/develop' into 3218-official-prom
2018-05-22 10:50:26 -05:00
Richard van der Hoff
9ea219c514
Send users a server notice about consent
...
When a user first syncs, we will send them a server notice asking them to
consent to the privacy policy if they have not already done so.
2018-05-22 11:54:51 +01:00
Amber Brown
fcc525b0b7
rest of the changes
2018-05-21 19:48:57 -05:00
Amber Brown
df9f72d9e5
replacing portions
2018-05-21 19:47:37 -05:00
Adrian Tschira
933bf2dd35
replace some iteritems with six
...
Signed-off-by: Adrian Tschira <nota@notafile.com>
2018-05-19 17:59:26 +02:00
Adrian Tschira
57b58e2174
make imports local
...
Signed-off-by: Adrian Tschira <nota@notafile.com>
2018-04-28 13:41:41 +02:00
Richard van der Hoff
b78395b7fe
Refactor ResponseCache usage
...
Adds a `.wrap` method to ResponseCache which wraps up the boilerplate of a
(get, set) pair, and then use it throughout the codebase.
This will be largely non-functional, but does include the following functional
changes:
* federation_server.on_context_state_request: drops use of _server_linearizer
which looked redundant and could cause incorrect cache misses by yielding
between the get and the set.
* RoomListHandler.get_remote_public_room_list(): fixes logcontext leaks
* the wrap function includes some logging. I'm hoping this won't be too noisy
on production.
2018-04-12 13:02:15 +01:00
Richard van der Hoff
b3384232a0
Add metrics for ResponseCache
2018-04-10 23:14:47 +01:00
Richard van der Hoff
3ee4ad09eb
Fix json encoding bug in replication
...
json encoders have an encode method, not a dumps method.
2018-04-03 15:09:48 +01:00
Richard van der Hoff
05630758f2
Use static JSONEncoders
...
using json.dumps with custom options requires us to create a new JSONEncoder on
each call. It's more efficient to create one upfront and reuse it.
2018-03-29 23:13:33 +01:00
Erik Johnston
9aa5a0af51
Explicitly use simplejson
2018-03-20 09:58:13 +00:00
Erik Johnston
610accbb7f
Fix replication after switch to simplejson
...
Turns out that simplejson serialises namedtuple's as dictionaries rather
than tuples by default.
2018-03-19 16:12:48 +00:00
Erik Johnston
fa72803490
Merge branch 'master' of github.com:matrix-org/synapse into develop
2018-03-19 11:41:01 +00:00
Erik Johnston
926ba76e23
Replace ujson with simplejson
2018-03-15 23:43:31 +00:00
Erik Johnston
57db62e554
Merge pull request #2992 from matrix-org/erikj/implement_member_workre
...
Implement RoomMemberWorkerHandler
2018-03-14 14:29:33 +00:00
Erik Johnston
0011ede3b0
Fix imports
2018-03-14 14:19:23 +00:00
Erik Johnston
62ad701326
s/join/joined/ in notify_user_membership_change
2018-03-14 14:17:43 +00:00
Erik Johnston
b27320b550
Implement RoomMemberWorkerHandler
2018-03-13 18:26:00 +00:00
Erik Johnston
3518d0ea8f
Split up ProfileStore
2018-03-13 17:36:50 +00:00
Erik Johnston
d0fcc48f9d
extra_users is actually a list of UserIDs
2018-03-13 11:20:06 +00:00
Erik Johnston
2e223163ff
Split Directory store
2018-03-05 15:11:30 +00:00
Erik Johnston
fafa3e7114
Split registration store
2018-03-02 13:48:27 +00:00
Erik Johnston
1a6c7cdf54
Merge pull request #2928 from matrix-org/erikj/read_marker_caches
...
Fix typo in getting replication account data processing
2018-03-01 17:56:14 +00:00
Erik Johnston
89b7232ff8
Fix typo in getting replication account data processing
2018-03-01 17:50:30 +00:00
Erik Johnston
1773df0632
Merge pull request #2925 from matrix-org/erikj/split_sig_fed
...
Split out SignatureStore and EventFederationStore
2018-03-01 17:32:58 +00:00
Erik Johnston
65cf454fd1
Remove unused DataStore
2018-03-01 17:27:53 +00:00
Erik Johnston
9e08a93a7b
Merge pull request #2927 from matrix-org/erikj/read_marker_caches
...
Improve caching for read_marker API
2018-03-01 17:12:34 +00:00
Erik Johnston
a83c514d1f
Improve caching for read_marker API
...
We add a new storage function to get a paritcular type of room account
data. This allows us to prefill the cache when updating that acount
data.
2018-03-01 17:08:17 +00:00
Erik Johnston
33bebb63f3
Add some caches to help read marker API
2018-03-01 17:08:17 +00:00
Erik Johnston
2ad4d5b5bb
Merge branch 'develop' of github.com:matrix-org/synapse into erikj/split_sig_fed
2018-03-01 16:59:39 +00:00
Erik Johnston
64346be26d
Merge branch 'develop' of github.com:matrix-org/synapse into erikj/split_stream_store
2018-03-01 16:26:42 +00:00
Erik Johnston
22518e2833
Merge pull request #2923 from matrix-org/erikj/stream_ago_worker
...
Calculate stream_ordering_month_ago correctly on workers
2018-03-01 16:23:54 +00:00
Erik Johnston
f793bc3877
Split out stream store
2018-03-01 15:13:08 +00:00
Erik Johnston
6411f725be
Calculate stream_ordering_month_ago correctly on workers
2018-03-01 14:20:53 +00:00
Erik Johnston
a9a2d66cdd
Split out SignatureStore and EventFederationStore
2018-03-01 14:17:53 +00:00
Erik Johnston
0c8ba5dd1c
Split up RoomStore
2018-03-01 14:01:19 +00:00
Erik Johnston
126b9bf96f
Log in the correct places
2018-03-01 12:05:33 +00:00
Erik Johnston
157298f986
Don't do preserve_fn for every request
2018-03-01 11:59:45 +00:00
Erik Johnston
89f90d808a
Add some logging
2018-03-01 11:59:16 +00:00
Erik Johnston
8ded8ba2c7
Make repl send_event idempotent and retry on timeouts
...
If we treated timeouts as failures on the worker we would attempt to
clean up e.g. push actions while the master might still process the
event.
2018-03-01 11:20:34 +00:00
Erik Johnston
6b8604239f
Correctly send ratelimit and extra_users params
2018-03-01 10:08:39 +00:00
Erik Johnston
28e973ac11
Calculate push actions on worker
2018-02-28 18:02:30 +00:00
Erik Johnston
3594dbc6dc
Merge pull request #2904 from matrix-org/erikj/receipt_cache_invalidation
...
Fix missing invalidations for receipt storage
2018-02-27 11:34:26 +00:00
Erik Johnston
2311189ee4
Merge pull request #2903 from matrix-org/erikj/split_roommember_store
...
Split out RoomMemberStore
2018-02-27 11:32:10 +00:00
Erik Johnston
c57607874c
Merge pull request #2901 from matrix-org/erikj/split_as_stores
...
Split AS stores
2018-02-27 10:07:07 +00:00
Erik Johnston
d62ce972f8
Merge branch 'develop' of github.com:matrix-org/synapse into erikj/split_roommember_store
2018-02-23 11:46:24 +00:00
Erik Johnston
6ae9a3d2a6
Update copyright
2018-02-23 11:44:49 +00:00
Erik Johnston
a90c60912f
Merge branch 'develop' of github.com:matrix-org/synapse into erikj/split_event_push_actions
2018-02-23 11:26:31 +00:00
Erik Johnston
50e8657867
Merge pull request #2902 from matrix-org/erikj/split_events_store
...
Split out get_events and co into a worker store
2018-02-23 11:23:52 +00:00
Erik Johnston
1cf9e071dd
Merge pull request #2899 from matrix-org/erikj/split_pushers
...
Split PusherStore
2018-02-23 11:23:35 +00:00
Erik Johnston
d0957753bf
Merge pull request #2898 from matrix-org/erikj/split_push_rules_store
...
Split PushRulesStore
2018-02-23 11:23:23 +00:00
Erik Johnston
70349872c2
Update copyright
2018-02-23 11:14:35 +00:00
Erik Johnston
eba93b05bf
Split EventsWorkerStore into separate file
2018-02-23 11:01:21 +00:00
Erik Johnston
bf8a36e080
Update copyright
2018-02-23 10:52:10 +00:00
Erik Johnston
c2ecfcc3a4
Update copyright
2018-02-23 10:41:34 +00:00
Erik Johnston
7e6cf89dc2
Update copyright
2018-02-23 10:39:19 +00:00
Erik Johnston
26d37f7a63
Update copyright
2018-02-23 10:33:55 +00:00
Erik Johnston
bb73f55fc6
Use absolute imports
2018-02-23 10:31:16 +00:00
Erik Johnston
faeb369f15
Fix missing invalidations for receipt storage
2018-02-21 15:19:54 +00:00
Erik Johnston
3dec9c66b3
Split out RoomMemberStore
2018-02-21 12:07:26 +00:00
Erik Johnston
46244b2759
Split AS stores
2018-02-21 11:49:34 +00:00
Erik Johnston
27b094f382
Split out get_events and co into a worker store
2018-02-21 11:41:48 +00:00
Erik Johnston
d15d237b0d
Split out EventPushActionWorkerStore
2018-02-21 11:01:13 +00:00
Erik Johnston
6f72765371
Split PusherStore
2018-02-21 10:54:21 +00:00
Erik Johnston
cbaad969f9
Split PushRulesStore
2018-02-21 10:43:31 +00:00
Erik Johnston
ca9b9d9703
Split AccountDataStore and TagStore
2018-02-21 10:15:04 +00:00
Erik Johnston
95e4cffd85
Fix comment
2018-02-20 17:58:40 +00:00
Erik Johnston
e316bbb4c0
Use abstract base class to access stream IDs
2018-02-20 17:43:57 +00:00
Erik Johnston
f5ac4dc2d4
Split ReceiptsStore
2018-02-20 16:28:28 +00:00
Erik Johnston
106906a65e
Don't serialize current state over replication
2018-02-15 13:53:18 +00:00
Erik Johnston
ef344b10e5
Don't log errors propogated from send_event
2018-02-15 11:03:49 +00:00
Erik Johnston
8ec2e638be
Add event_creator worker
2018-02-07 10:32:32 +00:00
Erik Johnston
24dd73028a
Add replication http endpoint for event sending
2018-02-07 10:32:32 +00:00
Erik Johnston
3d33eef6fc
Store state groups separately from events ( #2784 )
...
* Split state group persist into seperate storage func
* Add per database engine code for state group id gen
* Move store_state_group to StateReadStore
This allows other workers to use it, and so resolve state.
* Hook up store_state_group
* Fix tests
* Rename _store_mult_state_groups_txn
* Rename StateGroupReadStore
* Remove redundant _have_persisted_state_group_txn
* Update comments
* Comment compute_event_context
* Set start val for state_group_id_seq
... otherwise we try to recreate old state groups
* Update comments
* Don't store state for outliers
* Update comment
* Update docstring as state groups are ints
2018-02-06 14:31:24 +00:00
Richard van der Hoff
5c3c32f16f
Metrics for number of RDATA commands received
...
I found myself wishing we had this.
2018-01-15 17:45:55 +00:00
Richard van der Hoff
0edf085b68
Fix some logcontext leaks in replication resource
...
The @measure_func annotations rely on the wrapped function respecting the
logcontext rules. Add the necessary yields to make this work.
2017-11-23 23:19:43 +00:00
Richard van der Hoff
35a4b63240
Pull out bits of StateStore to a mixin
...
... so that we don't need to secretly gut-wrench it for use in the slaved
stores. I haven't done the other stores yet, but we should. I'm tired of the
workers breaking every time we tweak the stores because I forgot to gut-wrench
the right method.
fixes https://github.com/matrix-org/synapse/issues/2655 .
2017-11-14 11:43:58 +00:00
Richard van der Hoff
6cfee09be9
Make __init__ consitstent across Store heirarchy
...
Add db_conn parameters to the `__init__` methods of the *Store classes, so that
they are all consistent, which makes the multiple inheritance work correctly
(and so that we can later extract mixins which can be used in the slavedstores)
2017-11-13 10:46:07 +00:00
Richard van der Hoff
eaaabc6c4f
replace 'except:' with 'except Exception:'
...
what could possibly go wrong
2017-10-23 15:52:32 +01:00
hera
f807f7f804
log when we get an exception handling replication updates
2017-10-12 11:51:24 +01:00
Erik Johnston
2cc998fed8
Fix replication. And notify
2017-07-20 17:13:18 +01:00
Erik Johnston
925b3638ff
Reduce log levels in tcp replication
2017-07-11 10:04:21 +01:00
Erik Johnston
27f26e48b7
Serialize user ip command as json
2017-06-27 16:25:38 +01:00
Erik Johnston
8c23221666
Fix up
2017-06-27 15:53:45 +01:00
Erik Johnston
78cefd78d6
Make workers report to master for user ip updates
2017-06-27 14:58:10 +01:00
Erik Johnston
dae9a00a28
Initialise exclusive_user_regex
2017-06-21 14:19:33 +01:00
Erik Johnston
8177563ebe
Fix for workers
2017-06-21 13:57:49 +01:00
Erik Johnston
6aa5bc8635
Initial worker impl
2017-06-16 11:47:11 +01:00
Erik Johnston
d53fe399eb
Add cache for is_host_joined
2017-06-13 09:56:18 +01:00
Erik Johnston
a837765e8c
Merge pull request #2266 from matrix-org/erikj/host_in_room
...
Change is_host_joined to use current_state table
2017-06-12 09:49:51 +01:00
Erik Johnston
8060974344
Fix replication
2017-06-09 16:40:52 +01:00
Erik Johnston
2cac7623a5
Add missing notifier
2017-06-09 11:24:41 +01:00
Erik Johnston
298d83b340
Fix replication
2017-06-09 11:01:28 +01:00
Erik Johnston
dfbda5e025
Faster cache for get_joined_hosts
2017-05-25 17:24:44 +01:00
Erik Johnston
f85a415279
Add missing storage function to slave store
2017-05-22 16:31:24 +01:00
Erik Johnston
9ac263ed1b
Add new storage functions to slave store
2017-05-04 14:29:03 +01:00
Erik Johnston
e4f3431116
Remove unused cache
2017-04-24 13:27:38 +01:00
Erik Johnston
247c736b9b
Merge pull request #2115 from matrix-org/erikj/dedupe_federation_repl
...
Reduce federation replication traffic
2017-04-12 11:07:13 +01:00
Erik Johnston
9c712a366f
Move get_presence_list_* to SlaveStore
2017-04-11 16:07:33 +01:00
Erik Johnston
28a4649785
Remove HTTP replication APIs
2017-04-11 09:52:11 +01:00
Erik Johnston
29574fd5b3
Reduce federation presence replication traffic
...
This is mainly done by moving the calculation of where to send presence
updates from the presence handler to the transaction queue, so we only
need to send the presence event (and not the destinations) across the
replication connection. Before we were duplicating by sending the full
state across once per destination.
2017-04-10 16:48:30 +01:00
Erik Johnston
2e6f5a4910
Typo
2017-04-10 16:17:40 +01:00
Erik Johnston
efcb6db688
Merge pull request #2109 from matrix-org/erikj/send_queue_fix
...
Fix up federation SendQueue and document types
2017-04-10 13:09:25 +01:00
Erik Johnston
0364d23210
Up replication ping timeout
2017-04-10 11:32:05 +01:00
Erik Johnston
ab904caf33
Comments
2017-04-10 10:02:17 +01:00
Erik Johnston
98ce212093
Merge pull request #2103 from matrix-org/erikj/no-double-encode
...
Don't double encode replication data
2017-04-07 09:39:52 +01:00
Erik Johnston
ad544c803a
Document types of the replication streams
2017-04-06 13:28:52 +01:00
Erik Johnston
69b3fd485d
Fix incorrect type when using InvalidateCacheCommand
2017-04-06 09:36:38 +01:00
Erik Johnston
fcc803b2bf
Add log lines
2017-04-05 17:13:44 +01:00
Erik Johnston
3f213d908d
Rearrange metrics
2017-04-05 14:15:09 +01:00
Erik Johnston
1ca0e78ca1
Fix typo
2017-04-05 13:43:39 +01:00
Erik Johnston
b43d3267e2
Fixup some metrics for tcp repl
2017-04-05 13:34:54 +01:00
Erik Johnston
a5c401bd12
Merge pull request #2097 from matrix-org/erikj/repl_tcp_client
...
Move to using TCP replication
2017-04-05 09:36:21 +01:00
Erik Johnston
a76886726b
Merge pull request #2098 from matrix-org/erikj/repl_tcp_fix
...
Advance replication streams even if nothing is listening
2017-04-04 15:40:51 +01:00
Erik Johnston
4264ceb31c
Fiddle tcp replication logging
2017-04-04 14:14:03 +01:00
Erik Johnston
023ee197be
Advance replication streams even if nothing is listening
...
Otherwise the streams don't advance and steadily fall behind, so when a
worker does connect either a) they'll be streamed lots of old updates or
b) the connection will fail as the streams are too far behind.
2017-04-04 13:19:26 +01:00
Erik Johnston
3a1f3f8388
Change slave storage to use new replication interface
...
As the TCP replication uses a slightly different API and streams than
the HTTP replication.
This breaks HTTP replication.
2017-04-03 15:34:19 +01:00
Erik Johnston
52bfa604e1
Add basic replication client handler and factory
2017-04-03 15:34:13 +01:00
Erik Johnston
0a6a966e2b
Always advance stream tokens
2017-04-03 15:22:56 +01:00
Erik Johnston
1df7c28661
Use callbacks to notify tcp replication rather than deferreds
2017-03-31 15:42:51 +01:00
Erik Johnston
36d2b66f90
Add a timestamp to USER_SYNC command
...
This timestamp is used to indicate when the user last sync'd
2017-03-31 15:42:22 +01:00
Erik Johnston
bfcf016714
Fix up docs
2017-03-31 11:19:24 +01:00
Erik Johnston
4d7fc7f977
Add server side resource for tcp replication
2017-03-30 13:24:45 +01:00
Erik Johnston
7450693435
Initial TCP protocol implementation
...
This defines the low level TCP replication protocol
2017-03-30 12:54:46 +01:00
Erik Johnston
8da6f0be48
Define the various streams we will replicate
2017-03-30 12:54:46 +01:00
Erik Johnston
11880103b1
Make federation send queue take the current position
2017-03-30 12:54:36 +01:00
Erik Johnston
24d35ab47b
Add new storage functions for new replication
...
The new replication protocol will keep all the streams separate, rather
than muxing multiple streams into one.
2017-03-30 11:48:35 +01:00
Erik Johnston
09f79aaad0
Use presence replication stream to invalidate cache
...
Instead of using the cache invalidation replication stream to invalidate
the _get_presence_cache, we can instead rely on the presence replication
stream. This reduces the amount of replication traffic considerably.
2017-03-24 13:21:08 +00:00
Erik Johnston
d58b1ffe94
Replace some calls to cursor_to_dict
...
cursor_to_dict can be surprisinglh expensive for large result sets, so lets
only call it when we need to.
2017-03-24 11:07:02 +00:00
Erik Johnston
aac6d1fc9b
PEP8
2017-03-20 13:47:56 +00:00
Erik Johnston
61f471f779
Don't send the full event json over replication
2017-03-17 15:50:01 +00:00
Richard van der Hoff
29ed09e80a
Fix assertion to stop transaction queue getting wedged
...
... and update some docstrings to correctly reflect the types being used.
get_new_device_msgs_for_remote can return a long under some circumstances,
which was being stored in last_device_list_stream_id_by_dest, and was then
upsetting things on the next loop.
2017-03-15 12:16:55 +00:00
Erik Johnston
45c7f12d2a
Add new storage function to slave store
2017-03-13 16:26:44 +00:00
Erik Johnston
8f267fa8a8
Fix it for the workers
2017-03-10 11:22:25 +00:00
Erik Johnston
e933a2712d
Don't log unknown cache warnings in workers
2017-02-28 16:22:41 +00:00
Erik Johnston
095b45c165
Aggregate event push actions
2017-02-14 13:39:41 +00:00
Erik Johnston
9e617cd4c2
Cache get_presence storage
2017-02-13 13:50:03 +00:00
Erik Johnston
6bba80241c
Merge pull request #1912 from matrix-org/markjh/roominitialsync
...
Add db functions needed for room initial sync to slave
2017-02-13 12:20:21 +01:00
Mark Haines
3a46280ca3
Add db functions needed for room initial sync to slave
2017-02-13 11:16:53 +00:00
Erik Johnston
0f3e296cb7
Fix replication
2017-02-02 15:02:03 +00:00
Erik Johnston
458b6f4733
Only invalidate membership caches based on the cache stream
...
Before we completely invalidated get_users_in_room whenever we updated
any current_state_events table. This was way too aggressive.
2017-01-31 16:09:03 +00:00
Erik Johnston
3670025e64
Rename func
2017-01-30 14:11:31 +00:00
Erik Johnston
252b503fc8
Hook device list updates to replication
2017-01-27 14:31:35 +00:00
Erik Johnston
a55fa2047f
Insert delta of current_state_events to be more efficient
2017-01-20 17:10:18 +00:00
Erik Johnston
09cbcb78d3
Add cache to get_public_room_ids_at_stream_id
2016-12-12 14:41:51 +00:00
Erik Johnston
f32fb65552
Add new API appservice specific public room list
2016-12-06 16:12:27 +00:00
Erik Johnston
26072df6af
Ensure only main or federation_sender process can send federation traffic
2016-11-23 14:09:47 +00:00
Erik Johnston
4c79a63fd7
Explicit federation ack
2016-11-23 10:40:44 +00:00
Erik Johnston
90565d015e
Invalidate retry cache in both directions
2016-11-22 17:45:44 +00:00
Erik Johnston
7c9cdb2245
Store federation stream positions in the database
2016-11-21 11:33:08 +00:00
Erik Johnston
f8ee66250a
Handle sending events and device messages over federation
2016-11-17 15:48:04 +00:00
Erik Johnston
ed787cf09e
Hook up the send queue and create a federation sender worker
2016-11-16 17:34:44 +00:00
Erik Johnston
668f91d707
Fix check of wrong variable
2016-10-11 13:57:22 +01:00
Erik Johnston
748d8fdc7b
Reduce DB hits for replication
...
Some streams will occaisonally advance their positions without actually
having any new rows to send over federation. Currently this means that
the token will not advance on the workers, leading to them repeatedly
sending a slightly out of date token. This in turns requires the master
to hit the DB to check if there are any new rows, rather than hitting
the no op logic where we check if the given token matches the current
token.
This commit changes the API to always return an entry if the position
for a stream has changed, allowing workers to advance their tokens
correctly.
2016-09-23 16:49:21 +01:00
Erik Johnston
995f2f032f
Fix public room pagination for client_reader app
2016-09-16 14:48:21 +01:00
Erik Johnston
418bcd4309
Add new storage function to slave store
2016-09-16 08:37:39 +01:00
Erik Johnston
cb3edec6af
Use stream_change cache to make get_forward_extremeties_for_room cache more effective
2016-09-15 14:28:13 +01:00
Erik Johnston
55e6fc917c
Add cache to get_forward_extremeties_for_room
2016-09-15 14:04:28 +01:00
Erik Johnston
211786ecd6
Stream public room changes down replication
2016-09-15 11:47:23 +01:00
Erik Johnston
a4339de9de
Correctly handle typing stream id resetting
2016-09-09 16:44:26 +01:00
Erik Johnston
ab80d5e0a9
Drop replication log levels
2016-09-09 14:56:50 +01:00
Mark Haines
6a6cbfcf1e
Track the max_stream_device_id in a separate table, since we delete from the inbox table
2016-09-09 11:48:23 +01:00
Mark Haines
fa9d36e050
Merge branch 'develop' into markjh/direct_to_device_federation
2016-09-08 13:43:43 +01:00
Mark Haines
2a0159b8ae
Fix the stream change cache to work over replication
2016-09-07 15:58:00 +01:00
Erik Johnston
a99e933550
Add upgrade script that will slowly prune state_groups_state entries
2016-09-05 10:05:36 +01:00
Erik Johnston
44982606ee
Merge pull request #1060 from matrix-org/erikj/state_ids
...
Assign state groups in state handler.
2016-09-01 14:20:42 +01:00
Erik Johnston
826ca61745
Add storage function to SlaveStore
2016-08-31 14:45:04 +01:00
Mark Haines
1aa3e1d287
Add a replication stream for direct to device messages
2016-08-31 10:38:58 +01:00
Erik Johnston
3e784eff74
Remove state replication stream
2016-08-30 16:51:36 +01:00
Erik Johnston
55fc17cf4b
Merge pull request #1049 from matrix-org/erikj/presence_users_in_room
...
Use state handler instead of get_users_in_room/get_joined_hosts
2016-08-30 10:50:37 +01:00
Erik Johnston
41788bba50
Add to slave store
2016-08-30 09:55:17 +01:00
Erik Johnston
873f870e5a
Add new direct message storage functions to slave store
2016-08-30 09:40:32 +01:00
Erik Johnston
bed10f9880
Use state handler instead of get_users_in_room/get_joined_hosts
2016-08-26 14:54:30 +01:00
Erik Johnston
4daa397a00
Add is_host_joined to slave storage
2016-08-26 13:10:56 +01:00
Erik Johnston
50943ab942
Add new state storage funcs to replication
2016-08-26 09:57:32 +01:00
Erik Johnston
07229bbdae
Add appservice worker
2016-08-18 14:59:55 +01:00
Erik Johnston
a2427981b7
Use cached get_user_by_access_token in slaves
2016-08-16 11:24:32 +01:00
Erik Johnston
d9664344ec
Rename table. Add docs.
2016-08-15 11:45:57 +01:00
Erik Johnston
0be963472b
Use cached version of get_aliases_for_room
2016-08-15 11:24:12 +01:00
Erik Johnston
64e7e11853
Implement cache replication stream
2016-08-15 11:16:45 +01:00
Erik Johnston
5aa024e501
Merge branch 'develop' of github.com:matrix-org/synapse into erikj/fed_reader
2016-07-29 11:24:56 +01:00
Mark Haines
0a7d3cd00f
Create separate methods for getting messages to push
...
for the email and http pushers rather than trying to make a single
method that will work with their conflicting requirements.
The http pusher needs to get the messages in ascending stream order, and
doesn't want to miss a message.
The email pusher needs to get the messages in descending timestamp order,
and doesn't mind if it misses messages.
2016-07-28 20:24:24 +01:00
Erik Johnston
ec8b217722
Add destination retry to slave store
2016-07-28 17:35:53 +01:00
Erik Johnston
76b89d0edb
Add slace storage functions for public room list
2016-07-28 17:03:40 +01:00
Erik Johnston
0fcbca531f
Add get_auth_chain to slave store
2016-07-28 16:36:28 +01:00
Erik Johnston
6ede23ff1b
Add more key storage funcs into slave store
2016-07-28 15:41:26 +01:00
Erik Johnston
aede7248ab
Split out a FederationReader process
2016-07-21 17:37:44 +01:00
David Baker
46b7362304
pep8
2016-06-24 11:44:57 +01:00
David Baker
870c45913e
Use similar naming we use in email notifs for push
...
Fixes https://github.com/vector-im/vector-web/issues/1654
2016-06-24 11:41:11 +01:00
Erik Johnston
05e01f21d7
Remove event fetching from DB threads
2016-06-03 17:22:13 +01:00
Mark Haines
20eccd84d4
Merge pull request #827 from matrix-org/markjh/more_slaved_methods
...
Add methods to events, account data and receipt slaves
2016-06-03 11:46:21 +01:00
Mark Haines
b09f348530
Merge pull request #824 from matrix-org/markjh/slaved_presence_store
...
Add a slaved store for presence
2016-06-03 11:26:33 +01:00
Mark Haines
81cf449daa
Add methods to events, account data and receipt slaves
...
Adds the methods needed by /sync to the slaved events,
account data and receipt stores.
2016-06-03 11:19:27 +01:00
Mark Haines
3ae915b27e
Add a slaved store for presence
2016-06-03 11:05:53 +01:00
Mark Haines
f88d747f79
Add a comment explaining why the filter cache doesn't need exipiring
2016-06-03 11:03:10 +01:00
Mark Haines
0eae075723
Add slaved stores for filters, tokens, and push rules
2016-06-03 10:58:03 +01:00
Mark Haines
70599ce925
Allow external processes to mark a user as syncing. ( #812 )
...
* Add infrastructure to the presence handler to track sync requests in external processes
* Expire stale entries for dead external processes
* Add an http endpoint for making users as syncing
Add some docstrings and comments.
* Fixes
2016-06-02 15:20:15 +01:00
Mark Haines
0cb441fedd
Move typing handler out of the Handlers object
2016-05-17 15:58:46 +01:00
Mark Haines
3b86ecfa79
Move the presence handler out of the Handlers object
2016-05-16 18:56:37 +01:00
Mark Haines
0466454b00
Assert that stream replicated stream positions are ints
2016-05-13 17:33:44 +01:00
Mark Haines
1f71f386f6
Merge branch 'develop' into dbkr/email_notifs_on_pusher
2016-05-13 16:59:56 +01:00
Mark Haines
206eb9fd94
Shift some of the state_group methods into the SlavedEventStore
2016-05-13 16:58:14 +01:00
Mark Haines
3abab26458
Add a slaved datastore for account data
2016-05-13 15:34:06 +01:00
Mark Haines
0e792e7903
Log the stream IDs in an order that makes sense
2016-05-13 11:54:44 +01:00
Mark Haines
3547e66bc6
Make sure we advance our stream position
2016-05-13 11:53:00 +01:00
David Baker
5f46be19a7
Pass through get_events to pusher too
2016-05-10 18:43:40 +02:00
David Baker
d46b18a00f
Pass through _get_event_txn
2016-05-10 18:27:06 +02:00
Erik Johnston
8940281d1b
Don't warn
2016-05-05 15:10:03 +01:00
Erik Johnston
5d8a93a10e
Add some log information at returned replication streams
2016-05-05 10:29:21 +01:00
Mark Haines
8d7ad44331
Report per request metrics for all of the things using request_handler
2016-04-28 10:57:49 +01:00
Mark Haines
8a65666454
Fix backfill replication to advance the stream correctly
2016-04-27 15:38:43 +01:00
Mark Haines
78741cf025
Merge pull request #743 from matrix-org/markjh/slave_pushers
...
Replicate the pushers
2016-04-21 17:21:29 +01:00
Mark Haines
31719ad124
Merge pull request #744 from matrix-org/markjh/replication_remove_pusher
...
Add a replication endpoint for deleting pushers
2016-04-21 17:10:49 +01:00
Mark Haines
cfe1ff4bdb
Add a replication endpoint for deleting pushers
2016-04-21 16:33:05 +01:00
Mark Haines
d4823efad9
Replicate the pushers
2016-04-21 16:18:00 +01:00
Mark Haines
c0d8e0eb63
Replicate push actions
2016-04-21 15:25:58 +01:00
Mark Haines
f52dd35ac3
Merge pull request #738 from matrix-org/markjh/slaved_receipts
...
Add a slaved receipts store
2016-04-19 17:31:59 +01:00
Mark Haines
5bbd424ee0
Add a slaved receipts store
2016-04-19 17:14:08 +01:00
Mark Haines
e99365f601
Replicate get_invited_rooms_for_user
2016-04-19 15:22:14 +01:00
Mark Haines
ceb599e789
Add tests for redactions
2016-04-07 16:52:07 +01:00
Mark Haines
60ec9793fb
Add tests for get_latest_event_ids_in_room and get_current_state
2016-04-07 13:17:56 +01:00
Mark Haines
6bfec56796
Test that room membership is replicated
2016-04-06 16:20:13 +01:00
Mark Haines
75fb9ac1be
Add a slaved events store class
...
Add a test to check that get_room_names_and_aliases does the same
thing on both the master and on the slave data store.
2016-04-06 14:18:35 +01:00
Mark Haines
1d4deff25a
Separate generating the replication response...
...
from doing the http request parsing to make it easier
to write unit tests for replication.
2016-04-05 11:23:57 +01:00
Mark Haines
62e395f0e3
Merge pull request #676 from matrix-org/markjh/replicate_stateIII
...
Add replication streams for ex outliers and current state resets
2016-03-31 11:20:57 +01:00
Mark Haines
2ec5426035
Use a namedtuple rather than tuple unpacking
2016-03-31 10:33:02 +01:00
Matthew Hodgson
9113316b0e
typo
2016-03-30 17:29:42 +01:00
Mark Haines
1fbb094c6f
Add replication streams for ex outliers and current state resets
2016-03-30 17:19:56 +01:00
Mark Haines
31a9eceda5
Add a replication stream for state groups
2016-03-30 16:01:58 +01:00
Mark Haines
b6e8420aee
Add replication stream for pushers
2016-03-15 17:33:10 +00:00
Mark Haines
ebcbb23226
s/stream_ordering/event_stream_ordering/ in push
2016-03-04 16:15:23 +00:00
Mark Haines
2223204eba
Hook push rules up to the replication API
2016-03-02 17:26:20 +00:00
Mark Haines
60a0f81c7a
Add a /replication API for extracting the updates that happened on
...
synapse
This is necessary for replicating the data in synapse to be visible to a
separate service because presence and typing notifications aren't stored
in a database so won't be visible to another process.
This API can be used to either get the raw data by requesting the tables
themselves or to just receive notifications for updates by following the
streams meta-stream.
Returns updates for each table requested a JSON array of arrays with a
row for each row in the table.
Each table is prefixed by a header row with the: name of the table,
current stream_id position for the table, number of rows, number of
columns and the names of the columns.
This is followed by the rows that have been added to the server since
the requester last asked.
The API has a timeout and is hooked up to the notifier so that a slave
can long poll for updates.
2016-03-01 14:49:41 +00:00