Commit Graph

320 Commits

Author SHA1 Message Date
Patrick Cloke
bd6dc17221
Replace iteritems/itervalues/iterkeys with native versions. (#7692) 2020-06-15 07:03:36 -04:00
Patrick Cloke
56b66db78a
Strictly enforce canonicaljson requirements in a new room version (#7381) 2020-05-14 13:24:01 -04:00
Andrew Morgan
67feea8044
Extend spam checker to allow for multiple modules (#7435) 2020-05-08 19:25:48 +01:00
Erik Johnston
7941a70fa8
Fix bug in EventContext.deserialize. (#7393)
This caused `prev_state_ids` to be incorrect if the state event was not
replacing an existing state entry.
2020-05-05 14:17:27 +01:00
Patrick Cloke
06eb5cae08
Remove special auth and redaction rules for aliases events in experimental room ver. (#7037) 2020-03-09 08:58:25 -04:00
Richard van der Hoff
78a15b1f9d
Store room_versions in EventBase objects (#6875)
This is a bit fiddly because it all has to be done on one fell swoop:

* Wherever we create a new event, pass in the room version (and check it matches the format version)
* When we prune an event, use the room version of the unpruned event to create the pruned version.
* When we pass an event over the replication protocol, pass the room version over alongside it, and use it when deserialising the event again.
2020-03-05 15:46:44 +00:00
Richard van der Hoff
3f1cd14791
Merge pull request #6872 from matrix-org/rav/dictproperty
Rewrite _EventInternalMetadata to back it with a dict
2020-02-18 16:21:02 +00:00
Patrick Cloke
10027c80b0
Add type hints to the spam check module (#6915)
Add typing information to the spam checker modules.
2020-02-14 12:49:40 -05:00
Richard van der Hoff
9551911f88 Rewrite _EventInternalMetadata to back it with a _dict
Mostly, this gives mypy an easier time.
2020-02-14 16:42:40 +00:00
Richard van der Hoff
43b2be9764 Replace _event_dict_property with DictProperty
this amounts to the same thing, but replaces `_event_dict` with `_dict`, and
removes some of the function layers generated by `property`.
2020-02-14 16:42:37 +00:00
Patrick Cloke
49f877d32e
Filter the results of user directory searching via the spam checker (#6888)
Add a method to the spam checker to filter the user directory results.
2020-02-14 07:17:54 -05:00
Richard van der Hoff
799001f2c0
Add a make_event_from_dict method (#6858)
... and use it in places where it's trivial to do so.

This will make it easier to pass room versions into the FrozenEvent
constructors.
2020-02-07 15:30:04 +00:00
Richard van der Hoff
f4884444c3
remove unused room_version_to_event_format (#6857) 2020-02-07 09:26:57 +00:00
PeerD
99fcc96289
Third party event rules Update (#6781) 2020-02-06 14:15:29 +00:00
Erik Johnston
b9391c9575
Add typing to SyncHandler (#6821)
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
2020-02-03 18:05:44 +00:00
Richard van der Hoff
2a81393a4b Pass room_version into add_hashes_and_signatures 2020-01-30 22:15:50 +00:00
Richard van der Hoff
54f3f369bd Pass room_version into create_local_event_from_event_dict 2020-01-30 22:15:50 +00:00
Richard van der Hoff
ef6bdafb29 Store the room version in EventBuilder 2020-01-30 22:15:50 +00:00
Richard van der Hoff
5a246611e3
Type defintions for use in refactoring for redaction changes (#6803)
* Bump signedjson to 1.1

... so that we can use the type definitions

* Fix breakage caused by upgrade to signedjson 1.1

Thanks, @illicitonion...
2020-01-30 11:25:59 +00:00
Richard van der Hoff
b36095ae5c Set the PL for aliases events to 0. 2020-01-29 11:52:52 +00:00
Richard van der Hoff
ee42a5513e Factor out a copy_power_levels_contents method
I'm going to need another copy (hah!) of this.
2020-01-29 11:52:52 +00:00
Erik Johnston
fa4d609e20
Make 'event.redacts' never raise. (#6771)
There are quite a few places that we assume that a redaction event has a
corresponding `redacts` key, which is not always the case. So lets
cheekily make it so that event.redacts just returns None instead.
2020-01-23 15:19:03 +00:00
Erik Johnston
d386f2f339
Add StateMap type alias (#6715) 2020-01-16 13:31:22 +00:00
Erik Johnston
fa780e9721
Change EventContext to use the Storage class (#6564) 2019-12-20 10:32:02 +00:00
Brendan Abolivier
9e937c28ee Merge branch 'develop' into babolivier/message_retention 2019-11-26 17:53:57 +00:00
Richard van der Hoff
807ec3bd99
Fix bug which caused rejected events to be stored with the wrong room state (#6320)
Fixes a bug where rejected events were persisted with the wrong state group.

Also fixes an occasional internal-server-error when receiving events over
federation which are rejected and (possibly because they are
backwards-extremities) have no prev_group.

Fixes #6289.
2019-11-06 10:01:39 +00:00
Richard van der Hoff
0e3ab8afdc
Add some checks that we aren't using state from rejected events (#6330)
* Raise an exception if accessing state for rejected events

Add some sanity checks on accessing state_group etc for
rejected events.

* Skip calculating push actions for rejected events

It didn't actually cause any bugs, because rejected events get filtered out at
various later points, but there's not point in trying to calculate the push
actions for a rejected event.
2019-11-05 22:13:37 +00:00
Richard van der Hoff
4086002827
Improve documentation for EventContext fields (#6319) 2019-11-05 13:23:25 +00:00
Brendan Abolivier
09957ce0e4
Implement per-room message retention policies 2019-11-04 17:09:22 +00:00
Richard van der Hoff
c6516adbe0
Factor out an _AsyncEventContextImpl (#6298)
The intention here is to make it clearer which fields we can expect to be
populated when: notably, that the _event_type etc aren't used for the
synchronous impl of EventContext.
2019-11-01 16:19:09 +00:00
Travis Ralston
3a74c03ffb
Expose some homeserver functionality to spam checkers (#6259)
* Offer the homeserver instance to the spam checker

* Newsfile

* Linting

* Expose a Spam Checker API instead of passing the homeserver object

* Alter changelog

* s/hs/api
2019-10-31 09:16:14 -06:00
Richard van der Hoff
9aee28927b Convert EventContext to attrs (#6218)
* make EventContext use an attr
2019-10-28 14:29:55 +02:00
Erik Johnston
55a0c98d16
Merge pull request #5805 from matrix-org/erikj/validate_state
Validate well known state events are state events.
2019-08-01 13:45:48 +01:00
Erik Johnston
76a58fdcce Fix spelling.
Co-Authored-By: Andrew Morgan <1342360+anoadragon453@users.noreply.github.com>
2019-08-01 13:17:55 +01:00
Erik Johnston
dc4d74e44a Validate well-known state events are state events.
Lets disallow sending things like memberships, topics etc as non-state
events.
2019-07-31 16:36:20 +01:00
Erik Johnston
f31d4cb7a2 Don't allow clients to send tombstones that reference the same room 2019-07-31 15:52:27 +01:00
Amber Brown
4806651744
Replace returnValue with return (#5736) 2019-07-23 23:00:55 +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
Andrew Morgan
ad8b909ce9
Add origin_server_ts and sender fields to m.replace (#5613)
Riot team would like some extra fields as part of m.replace, so here you go.

Fixes: #5598
2019-07-05 17:20:02 +01:00
Amber Brown
463b072b12
Move logging utilities out of the side drawer of util/ and into logging/ (#5606) 2019-07-04 00:07:04 +10:00
Amber Brown
32e7c9e7f2
Run Black. (#5482) 2019-06-20 19:32:02 +10:00
Erik Johnston
e0be8d7016
Merge pull request #5480 from matrix-org/erikj/extremities_dummy_events
Add experimental option to reduce extremities.
2019-06-19 13:19:18 +01:00
Erik Johnston
554609288b Run as background process and fix comments 2019-06-19 11:33:03 +01:00
Erik Johnston
b42f90470f Add experimental option to reduce extremities.
Adds new config option `cleanup_extremities_with_dummy_events` which
periodically sends dummy events to rooms with more than 10 extremities.

THIS IS REALLY EXPERIMENTAL.
2019-06-18 15:02:18 +01:00
Brendan Abolivier
33ea87be39
Make check_threepid_can_be_invited async 2019-06-17 17:39:38 +01:00
Brendan Abolivier
112cf5a73a Add third party rules hook for 3PID invites 2019-06-17 17:39:09 +01:00
Erik Johnston
187d2837a9 Add third party rules hook into create room 2019-06-17 16:41:19 +01:00
Brendan Abolivier
f874b16b2e Add plugin APIs for implementations of custom event rules. 2019-06-14 18:16:03 +01:00
Tulir Asokan
dd64b9dbdd Fix appservice timestamp massaging (#5233)
Signed-off-by: Tulir Asokan <tulir@maunium.net>
2019-05-24 14:44:04 +01:00
Erik Johnston
de7672b78f Don't bundle events in /sync or /events
As we'll send down the annotations too anyway, so this just ends up
confusing clients.
2019-05-21 13:54:09 +01:00
Richard van der Hoff
04d53794d6
Fix error handling for rooms whose versions are unknown. (#5219)
If we remove support for a particular room version, we should behave more
gracefully. This should make client requests fail with a 400 rather than a 500,
and will ignore individiual PDUs in a federation transaction, rather than the
whole transaction.
2019-05-21 13:47:25 +01:00
Richard van der Hoff
5206648a4a
Add a test room version which updates event ID format (#5210)
Implements MSC1884
2019-05-20 15:54:42 +01:00
Erik Johnston
1dff859d6a Rename relation types to match MSC 2019-05-20 14:31:19 +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
a0603523d2 Add aggregations API 2019-05-16 09:37:20 +01:00
Erik Johnston
b54b03f9e1 Allow client event serialization to be async 2019-05-14 11:58:01 +01:00
Brendan Abolivier
1473058b5e
Do checks on aliases for incoming m.room.aliases events (#5128)
Follow-up to #5124

Also added a bunch of checks to make sure everything (both the stuff added on #5124 and this PR) works as intended.
2019-05-08 17:01:30 +01:00
Andrew Morgan
caa76e6021
Remove periods from copyright headers (#5046) 2019-04-11 17:08:13 +01:00
Richard van der Hoff
54a87a7b08
Collect room-version variations into one place (#4969)
Collect all the things that make room-versions different to one another into
one place, so that it's easier to define new room versions.
2019-04-01 10:24:38 +01:00
Erik Johnston
5536ddba75 Make prev_state field optional
The `prev_state` field on events is not specced and so synapse shouldn't
explode if an event is missing the field.

Fixes #4787
2019-03-08 15:05:32 +00:00
Erik Johnston
a9de04be72 Implement soft fail 2019-03-06 16:22:16 +00:00
Erik Johnston
a1b0e1879b Enable room version v3 2019-01-29 23:09:10 +00:00
Erik Johnston
67b82f1336 Merge branch 'develop' of github.com:matrix-org/synapse into erikj/redactions_eiah 2019-01-29 22:58:38 +00:00
Erik Johnston
afeea319df Fixup comment 2019-01-29 22:55:29 +00:00
Erik Johnston
7740eddd04
Merge pull request #4514 from matrix-org/erikj/remove_event_id
Remove usages of event ID's domain
2019-01-29 22:54:25 +00:00
Erik Johnston
f46a818ce5 kill vdh test some more 2019-01-29 22:02:58 +00:00
Erik Johnston
a696c48133 Merge branch 'develop' of github.com:matrix-org/synapse into erikj/redactions_eiah 2019-01-29 22:00:33 +00:00
Erik Johnston
47e2dd1994 Drop vdh support 2019-01-29 21:24:34 +00:00
Erik Johnston
38590a4870 Add docstring 2019-01-29 21:22:47 +00:00
Erik Johnston
84af577356 Implement event format v2 2019-01-29 18:06:11 +00:00
Erik Johnston
610f0830b0 Don't assert an event must have an event ID 2019-01-29 18:02:26 +00:00
Erik Johnston
fb99dae9c8 Don't set event_id twice 2019-01-29 12:08:23 +00:00
Erik Johnston
7709d2bd16 Implement rechecking of redactions 2019-01-29 11:56:20 +00:00
Erik Johnston
be47cfa9c9 Refactor event building into EventBuilder
This is so that everything is done in one place, making it easier to
change the event format based on room version
2019-01-29 11:13:00 +00:00
Erik Johnston
073f6c2e5e
Merge pull request #4494 from matrix-org/erikj/fixup_event_validator
Split up event validation between event and builder
2019-01-29 10:55:07 +00:00
Erik Johnston
40638ae7f5 Remove duplicate checks 2019-01-29 10:37:40 +00:00
Erik Johnston
9fa3c6ffa3 Fix up error messages 2019-01-29 10:36:46 +00:00
Erik Johnston
28efc80723 Fold validate into validate_new 2019-01-29 10:34:49 +00:00
Erik Johnston
b872c7b1b4 Split up event validation between event and builder
The validator was being run on the EventBuilder objects, and so the
validator only checked a subset of fields. With the upcoming
EventBuilder refactor even fewer fields will be there to validate.

To get around this we split the validation into those that can be run
against an EventBuilder and those run against a fully fledged event.
2019-01-28 17:00:14 +00:00
Erik Johnston
855a151015 Refactor event signing to work on dicts
This is in preparation for making EventBuilder format agnostic, which
means event signing should be done against the event dict rather than
the EventBuilder object.
2019-01-28 16:42:10 +00:00
Erik Johnston
a50cf929c1 Require event format version to parse or create events 2019-01-25 10:32:19 +00:00
Erik Johnston
62514bb81b Merge branch 'develop' of github.com:matrix-org/synapse into erikj/msc_1813 2019-01-25 10:07:08 +00:00
Erik Johnston
80bcca659e
Merge pull request #4405 from matrix-org/erikj/fixup_rejecting_invites
Store rejected remote invite events as outliers
2019-01-24 18:33:27 +00:00
Erik Johnston
26f44164c8 Review comments 2019-01-24 18:28:00 +00:00
Erik Johnston
b8082a5445 Use term 'out of band membership' instead 2019-01-24 17:33:19 +00:00
Erik Johnston
7c288c2250 Clarify the invite flows 2019-01-23 20:07:47 +00:00
Erik Johnston
67cd4dad81 Implement MSC 1813 - Add room version to make APIs
We also implement `make_membership_event` converting the returned
room version to an event format version.
2019-01-23 16:51:46 +00:00
Erik Johnston
be1065af59 isort 2019-01-23 11:48:16 +00:00
Erik Johnston
c5a296b10c Add support for persisting event format versions
Currently we only have the one event format version defined, but this
adds the necessary infrastructure to persist and fetch the format
versions alongside the events.

We specify the format version rather than the room version as:

1. We don't necessarily know the room version, existing events may be
   either v1 or v2.
2. We'd need to be careful to prevent/handle correctly if different
   events in the same room reported to be of different versions, which
   sounds annoying.
2019-01-23 11:30:01 +00:00
Erik Johnston
bc80b3f454 Add helpers for getting prev and auth events (#4139)
* Add helpers for getting prev and auth events

This is in preparation for allowing the event format to change between
room versions.
2018-11-06 00:35:15 +11:00
Amber Brown
7232917f12
Disable frozen dicts by default (#3987) 2018-10-02 22:53:47 +10:00
Erik Johnston
89a76d1889 Fix handling of redacted events from federation
If we receive an event that doesn't pass their content hash check (e.g.
due to already being redacted) then we hit a bug which causes an
exception to be raised, which then promplty stops the event (and
request) from being processed.

This effects all sorts of federation APIs, including joining rooms with
a redacted state event.
2018-09-13 15:44:12 +01:00
Richard van der Hoff
c1f80effbe Handle delta_ids being None in _update_context_for_auth_events
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)
2018-07-23 22:06:50 +01:00
Erik Johnston
8b9f164fff Comments 2018-07-23 17:43:01 +01:00
Erik Johnston
50c60e5fad Only get cached state from context in persist_event
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.
2018-07-23 17:21:40 +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
999bcf9d01 Fix EventContext when using workers
We were:
  1. Not correctly setting all attributes
  2. Using defer.inlineCallbacks in a non-generator
2018-07-23 15:24:21 +01:00
Erik Johnston
4797ed000e Update docstrings to make sense 2018-07-23 15:05:56 +01:00
Erik Johnston
027bc01a1b Add support for updating state 2018-07-23 13:17:25 +01:00
Erik Johnston
440b8845b5 Make EventContext lazy load state 2018-07-23 12:56:56 +01:00
Erik Johnston
842cdece42 pep8 2018-07-23 12:31:35 +01:00
Erik Johnston
acbfdc3442 Refcator EventContext to accept state during init 2018-07-23 12:20:55 +01:00
Amber Brown
3132b89f12
Make the rest of the .iterwhatever go away (#3562) 2018-07-21 15:47:18 +10:00
Amber Brown
49af402019 run isort 2018-07-09 16:09:20 +10:00
Amber Brown
c936a52a9e
Consistently use six's iteritems and wrap lazy keys/values in list() if they're not meant to be lazy (#3307) 2018-05-31 19:03:47 +10:00
Adrian Tschira
d9fe2b2d9d Replace some more comparisons with six
plus a bonus b"" string I missed last time

Signed-off-by: Adrian Tschira <nota@notafile.com>
2018-05-19 17:56:31 +02:00
Adrian Tschira
0c9db26260 add comment explaining attributeerror 2018-04-30 09:49:10 +02:00
Adrian Tschira
bfc2ade9b3 Make event properties raise AttributeError instead
They raised KeyError before. I'm changing this because the code uses
hasattr() to check for the presence of a key. This worked accidentally
before, because hasattr() silences all exceptions in python 2. However,
in python3, this isn't the case anymore.

I had a look around to see if anything depended on this raising a
KeyError and I couldn't find anything. Of course, I could have simply
missed it.

Signed-off-by: Adrian Tschira <nota@notafile.com>
2018-04-15 20:16:59 +02:00
Erik Johnston
4810f7effd Remove context.push_actions 2018-02-15 15:47:06 +00:00
Erik Johnston
106906a65e Don't serialize current state over replication 2018-02-15 13:53:18 +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
eaaabc6c4f replace 'except:' with 'except Exception:'
what could possibly go wrong
2017-10-23 15:52:32 +01:00
Richard van der Hoff
631d7b87b5 Remove pointless create() method
It just calls the constructor, so we may as well kill it rather than having
random codepaths.
2017-10-20 22:14:55 +01:00
David Baker
f878e6f8af Spam checking: add the invitee to user_may_invite 2017-10-05 14:02:28 +01:00
David Baker
d8ce68b09b spam check room publishing 2017-10-04 14:29:33 +01:00
David Baker
197c14dbcf Add room creation checks to spam checker
Lets the spam checker deny attempts to create rooms and add aliases
to them.
2017-10-04 10:47:54 +01:00
David Baker
1e2ac54351 s/roomid/room_id/ 2017-10-03 17:41:38 +01:00
David Baker
1e375468de pass room id too 2017-10-03 17:13:14 +01:00
David Baker
537088e7dc Actually write warpper function 2017-10-03 14:28:12 +01:00
David Baker
ef3a5ae787 Don't test is spam_checker not None
Sometimes it's a Mock object which is not none but is still not
what we're after
2017-09-27 11:24:19 +01:00
David Baker
8c06dd6071 Remove unintentional debugging 2017-09-27 10:31:14 +01:00
David Baker
60c78666ab pep8 2017-09-27 10:26:13 +01:00
David Baker
6cd5fcd536 Make the spam checker a module 2017-09-26 19:20:23 +01:00
Matthew Hodgson
f496399ac4 fix thinko'd docstring 2017-09-22 15:34:14 +01:00
Richard van der Hoff
5ed109d59f PoC for filtering spammy events (#2456)
Demonstration of how you might add some hooks to filter out spammy events.
2017-09-19 12:20:11 +01:00
Erik Johnston
3e5a62ecd8 Add more granular event send metrics 2017-05-02 14:23:26 +01:00
Erik Johnston
46826bb078 Comment and remove spurious logging 2017-04-27 17:25:44 +01:00
Erik Johnston
1e166470ab Fix tests 2017-04-26 16:23:30 +01:00
Erik Johnston
34e682d385 Fix invite state to always include all events 2017-04-26 16:18:08 +01:00
Richard van der Hoff
5068fb16a5 Refactoring and cleanups
A few non-functional changes:

* A bunch of docstrings to document types
* Split `EventsStore._persist_events_txn` up a bit. Hopefully it's a bit more
  readable.
* Rephrase `EventFederationStore._update_min_depth_for_room_txn` to avoid
  mind-bending conditional.
* Rephrase rejected/outlier conditional in `_update_outliers_txn` to avoid
  mind-bending conditional.
2017-03-17 15:06:07 +00:00
Erik Johnston
5d6bad1b3c Optimise state resolution 2017-01-17 13:22:19 +00:00
Matthew Hodgson
2f4b2f4783 gah, fix mangled merge of 0.18.7 into develop 2017-01-07 04:00:42 +00:00
Mark Haines
f784980d2b Only send events that originate on this server.
Or events that are sent via the federation "send_join" API.

This should match the behaviour from before v0.18.5 and #1635 landed.
2017-01-05 11:26:30 +00:00
Kegan Dougal
c3d963ac24 Review comments 2016-11-22 13:42:11 +00:00
Kegan Dougal
6d4e6d4cba Also check for dict since sometimes they aren't frozen 2016-11-22 10:39:41 +00:00
Kegan Dougal
cea4e4e7b2 Glue only_event_fields into the sync rest servlet 2016-11-22 10:14:05 +00:00
Kegan Dougal
0a8b0eeca1 More tests 2016-11-22 09:59:27 +00:00
Kegan Dougal
70a2157b64 Start adding some tests 2016-11-21 17:52:45 +00:00
Kegan Dougal
f97511a1f3 Move event_fields filtering to serialize_event
Also make it an inclusive not exclusive filter, as the spec demands.
2016-11-21 17:42:16 +00:00
Erik Johnston
628e65721b Add comments 2016-09-05 10:41:27 +01:00
Erik Johnston
9e25443db8 Move to storing state_groups_state as deltas 2016-09-01 14:31:26 +01:00
Erik Johnston
c10cb581c6 Correctly handle the difference between prev and current state 2016-08-31 14:26:22 +01:00
Erik Johnston
54cc69154e Make None optional 2016-08-26 11:20:59 +01:00
Erik Johnston
a3dc1e9cbe Replace context.current_state with context.current_state_ids 2016-08-25 17:32:22 +01:00
Erik Johnston
17f4f14df7 Pull out event ids rather than full events for state 2016-08-25 13:42:44 +01:00
Erik Johnston
1d40373c9d Include prev_content in redacted state events 2016-08-11 10:24:41 +01:00
Mark Haines
76503f95ed Remove the is_new_state argument to persist event.
Move the checks for whether an event is new state inside persist
event itself.

This was harder than expected because there wasn't enough information
passed to persist event to correctly handle invites from remote servers
for new rooms.
2016-03-31 15:00:42 +01:00
Mark Haines
1e25f62ee6 Use a stream id generator to assign state group ids 2016-03-30 12:55:02 +01:00