Commit Graph

98 Commits

Author SHA1 Message Date
Dan
f05ce478f0
Implement Push Notifications (#1842)
* Add Pushserver component with Pushers API

Co-authored-by: Tommie Gannert <tommie@gannert.se>
Co-authored-by: Dan Peleg <dan@globekeeper.com>

* Wire Pushserver component

Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>

* Add PushGatewayClient.

The full event format is required for Sytest.

* Add a pushrules module.

* Change user API account creation to use the new pushrules module's defaults.

Introduces "scope" as required by client API, and some small field
tweaks to make some 61push Sytests pass.

* Add push rules query/put API in Pushserver.

This manipulates account data over User API, and fires sync messages
for changes. Those sync messages should, according to an existing TODO
in clientapi, be moved to userapi.

Forks clientapi/producers/syncapi.go to pushserver/ for later extension.

* Add clientapi routes for push rules to Pushserver.

A cleanup would be to move more of the name-splitting logic into
pushrules.go, to depollute routing.go.

* Output rooms.join.unread_notifications in /sync.

This is the read-side. Pushserver will be the write-side.

* Implement pushserver/storage for notifications.

* Use PushGatewayClient and the pushrules module in Pushserver's room consumer.

* Use one goroutine per user to avoid locking up the entire server for
  one bad push gateway.
* Split pushing by format.
* Send one device per push. Sytest does not support coalescing
  multiple devices into one push. Matches Synapse. Either we change
  Sytest, or remove the group-by-url-and-format logic.
* Write OutputNotificationData from push server. Sync API is already
  the consumer.

* Implement read receipt consumers in Pushserver.

Supports m.read and m.fully_read receipts.

* Add clientapi route for /unstable/notifications.

* Rename to UpsertPusher for clarity and handle pusher update

* Fix linter errors

* Ignore body.Close() error check

* Fix push server internal http wiring

* Add 40 newly passing 61push tests to whitelist

* Add next 12 newly passing 61push tests to whitelist

* Send notification data before notifying users in EDU server consumer

* NATS JetStream

* Goodbye sarama

* Fix `NewStreamTokenFromString`

* Consume on the correct topic for the roomserver

* Don't panic, NAK instead

* Move push notifications into the User API

* Don't set null values since that apparently causes Element upsetti

* Also set omitempty on conditions

* Fix bug so that we don't override the push rules unnecessarily

* Tweak defaults

* Update defaults

* More tweaks

* Move `/notifications` onto `r0`/`v3` mux

* User API will consume events and read/fully read markers from the sync API with stream positions, instead of consuming directly

Co-authored-by: Piotr Kozimor <p1996k@gmail.com>
Co-authored-by: Tommie Gannert <tommie@gannert.se>
Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>
2022-03-03 11:40:53 +00:00
S7evinK
cf525d1f61
Implement /context (#2207)
* Add QueryEventsAfter

* Add /context

* Make all tests pass on sqlite

* Add queries to get the events for /context requests

* Move /context to the syncapi

* Revert "Add QueryEventsAfter"

This reverts commit 440a771d10632622e8c65d35fe90f0804bc98862.

* Simplify getting the required events

* Apply RoomEventFilter when getting events

* Add passing tests

* Remove logging

* Remove unused SQL statements
Update comments & add TODO
2022-02-21 17:12:22 +01:00
Ryan W
a624eab309
- Removed double imports (#1989)
- Lower cased error messages

Signed-off-by: Ryan Whittington <twentybitdev@gmail.com>

Co-authored-by: kegsay <kegan@matrix.org>
2021-09-08 17:31:03 +01:00
Neil Alexander
d15836e260
Increase gocyclo complexity to 25 (and remove all but 2 golint directives related to it) (#1783) 2021-03-03 14:35:57 +00:00
Neil Alexander
6e44450cc9
Don't re-request state events that are already in the timeline (#1739)
* Don't request state events if we already have the timeline events (Postgres only)

* Rename variable

* nocyclo

* Add SQLite

* Tweaks

* Revert query change

* Don't dedupe if asking for full state

* Update query
2021-02-04 12:20:37 +00:00
Neil Alexander
8fe51019ad
Add sync API memberships table (#1726) 2021-01-20 20:43:20 +00:00
Neil Alexander
b70238f2d5
Basic sync filtering (#1721)
* Add some filtering (postgres only for now)

* Fix build error

* Try to use request filter

* Use default filter as a template when retrieving from the database

* Remove unused strut

* Update sytest-whitelist

* Add filtering to SelectEarlyEvents

* Fix Postgres selectEarlyEvents query

* Attempt filtering on SQLite

* Test limit, set field for limit/order in prepareWithFilters

* Remove debug logging, add comments

* Tweaks, debug logging

* Separate SQLite stream IDs

* Fix filtering in current state table

* Fix lock issues

* More tweaks

* Current state requires room ID

* Review comments
2021-01-19 18:00:42 +00:00
Neil Alexander
d8fba52e97
Simplify send-to-device messaging (#1702)
* Simplify send-to-device messaging

* Don't return error if there's no work to do

* Remove SQLite migrations for now

* Tweak Postgres migrations

* Tweaks

* Fixes

* Cleanup separately

* Fix SQLite migration
2021-01-13 17:29:46 +00:00
Neil Alexander
b5a8935042
Sync refactor — Part 1 (#1688)
* It's half-alive

* Wakeups largely working

* Other tweaks, typing works

* Fix bugs, add receipt stream

* Delete notifier, other tweaks

* Dedupe a bit, add a template for the invite stream

* Clean up, add templates for other streams

* Don't leak channels

* Bring forward some more PDU logic, clean up other places

* Add some more wakeups

* Use addRoomDeltaToResponse

* Log tweaks, typing fixed?

* Fix timed out syncs

* Don't reset next batch position on timeout

* Add account data stream/position

* End of day

* Fix complete sync for receipt, typing

* Streams package

* Clean up a bit

* Complete sync send-to-device

* Don't drop errors

* More lightweight notifications

* Fix typing positions

* Don't advance position on remove again unless needed

* Device list updates

* Advance account data position

* Use limit for incremental sync

* Limit fixes, amongst other things

* Remove some fmt.Println

* Tweaks

* Re-add notifier

* Fix invite position

* Fixes

* Notify account data without advancing PDU position in notifier

* Apply account data position

* Get initial position for account data

* Fix position update

* Fix complete sync positions

* Review comments @Kegsay

* Room consumer parameters
2021-01-08 16:59:06 +00:00
6543
a85051ca9d
fix imports (#1665)
* fix imports

Signed-off-by: 6543 <6543@obermui.de>

* add sqlite driver import back

Signed-off-by: 6543 <6543@obermui.de>

* rm import of userapi/storage/accounts/sqlite3/storage.go
2020-12-21 14:27:01 +00:00
Neil Alexander
50963b724b
More sane next batch handling, typing notification tweaks, give invites their own stream position, device list fix (#1641)
* Update sync responses

* Fix positions, add ApplyUpdates

* Fix MarshalText as non-pointer, PrevBatch is optional

* Increment by number of read receipts

* Merge branch 'master' into neilalexander/devicelist

* Tweak typing

* Include keyserver position tweak

* Fix typing next position in all cases

* Tweaks

* Fix typo

* Tweaks, restore StreamingToken.MarshalText which somehow went missing?

* Rely on positions from notifier rather than manually advancing them

* Revert "Rely on positions from notifier rather than manually advancing them"

This reverts commit 53112a62cc3bfd9989acab518e69eeb27938117a.

* Give invites their own position, fix other things

* Fix test

* Fix invites maybe

* Un-whitelist tests that look to be genuinely wrong

* Use real receipt positions

* Ensure send-to-device uses real positions too
2020-12-18 11:11:21 +00:00
Neil Alexander
ebcacd1bb5
Give receipts their own stream ID in the database (#1631)
* Give read recipts their own database sequence

* Give receipts their own stream ID

* Change migration names

* Reset sequences

* Add max receipt queries, missing stream_id table entry for SQLite
2020-12-11 14:02:17 +00:00
Neil Alexander
9c03b0a4fa
Refactor sync tokens (#1628)
* Refactor sync tokens

* Comment out broken notifier test

* Update types, sytest-whitelist

* More robust token checking

* Remove New functions for streaming tokens

* Export Logs in StreamingToken

* Fix tests
2020-12-10 18:57:10 +00:00
Neil Alexander
bad81c028f
Don't recalculate event ID so often in sync (#1624)
* Don't bail so quickly in fetchMissingStateEvents

* Don't recalculate event IDs so often in sync API

* Add comments

* Fix comments

* Update to matrix-org/gomatrixserverlib@eb6a890
2020-12-09 18:07:17 +00:00
Neil Alexander
be7d8595be
Peeking updates (#1607)
* Add unpeek

* Don't allow peeks into encrypted rooms

* Fix send tests

* Update consumers
2020-12-03 11:11:46 +00:00
Neil Alexander
20a01bceb2
Pass pointers to events — reloaded (#1583)
* Pass events as pointers

* Fix lint errors

* Update gomatrixserverlib

* Update gomatrixserverlib

* Update to matrix-org/gomatrixserverlib#240
2020-11-16 15:44:53 +00:00
S7evinK
bcb89ada5e
Implement read receipts (#1528)
* fix conversion from int to string yields a string of one rune, not a string of digits

* Add receipts table to syncapi

* Use StreamingToken as the since value

* Add required method to testEDUProducer

* Make receipt json creation "easier" to read

* Add receipts api to the eduserver

* Add receipts endpoint

* Add eduserver kafka consumer

* Add missing kafka config

* Add passing tests to whitelist

Signed-off-by: Till Faelligen <tfaelligen@gmail.com>

* Fix copy & paste error

* Fix column count error

* Make outbound federation receipts pass

* Make "Inbound federation rejects receipts from wrong remote" pass

* Don't use errors package

* - Add TODO for batching requests
- Rename variable

* Return a better error message

* - Use OutputReceiptEvent instead of InputReceiptEvent as result
- Don't use the errors package for errors
- Defer CloseAndLogIfError to close rows
- Fix Copyright

* Better creation/usage of JoinResponse

* Query all joined rooms instead of just one

* Update gomatrixserverlib

* Add sqlite3 migration

* Add postgres migration

* Ensure required sequence exists before running migrations

* Clarification on comment

* - Fix a bug when creating client receipts
- Use concrete types instead of interface{}

* Remove dead code
Use key for timestamp

* Fix postgres query...

* Remove single purpose struct

* Use key/value directly

* Only apply receipts on initial sync or if edu positions differ,
otherwise we'll be sending the same receipts over and over again.

* Actually update the id, so it is correctly send in syncs

* Set receipt on request to /read_markers

* Fix issue with receipts getting overwritten

* Use fmt.Errorf instead of pkg/errors

* Revert "Add postgres migration"

This reverts commit 722fe5a04628882b787d096942459961db159b06.

* Revert "Add sqlite3 migration"

This reverts commit d113b03f6495a4b8f8bcf158a3d00b510b4240cc.

* Fix selectRoomReceipts query

* Make golangci-lint happy

Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>
2020-11-09 18:46:11 +00:00
Neil Alexander
3afc623098
Fix RewritesState bug (#1557)
* Set RewritesState once

* Check if any new state provided

* Obey rewritesState

* Don't nuke everything the sync API knows when purging state

* Fix panic from duplicate insert

* Consistency

* Use HasState

* Remove nolint

* Clean up joined rooms on state rewrite
2020-10-22 10:39:16 +01:00
Kegsay
279044cd90
Add history visibility guards (#1470)
* Add history visibility guards

Default to 'joined' visibility to avoid leaking events, until we get
around to implementing history visibility completely. Related #617

* Don't apply his vis checks on shared rooms

* Fix order of checks

* Linting and remove another misleading check

* Update whitelist
2020-10-02 17:08:13 +01:00
Neil Alexander
fb9a8f215b
Fix initial sync (#1465)
* Fix complete sync check

* Remove unnecessary 'since' copy

* Fix failing test

* Un-whitelist a couple of tests

Co-authored-by: Kegan Dougal <kegan@matrix.org>
2020-10-02 12:50:58 +01:00
Neil Alexander
965f068d1a
Handle state with input event as new events (#1415)
* SendEventWithState events as new

* Use cumulative state IDs for final event

* Error wrapping in calculateAndSetState

* Handle overwriting same event type and state key

* Hacky way to spot historical events

* Don't exclude from sync

* Don't generate output events when rewriting forward extremities

* Update output event check

* Historical output events

* Define output room event type

* Notify key changes on state

* Don't send our membership event twice

* Deduplicate state entries

* Tweaks

* Remove unnecessary nolint

* Fix current state upsert in sync API

* Send auth events as outliers, state events as rewrite

* Sync API don't consume state events

* Process events actually

* Improve outlier check

* Fix local room check

* Remove extra room check, it seems to break the whole damn world

* Fix federated join check

* Fix nil pointer exception

* Better comments on DeduplicateStateEntries

* Reflow forced federated joins

* Don't force federated join for possibly even local invites

* Comment SendEventWithState better

* Rewrite room state in sync API storage

* Add TODO

* Clean up all room data when receiving create event

* Don't generate output events for rewrites, but instead notify that state is rewritten on the final new event

* Rename to PurgeRoom

* Exclude backfilled messages from /sync

* Split out rewriting state from updating state from state res

Co-authored-by: Kegan Dougal <kegan@matrix.org>
2020-09-15 11:17:46 +01:00
Matthew Hodgson
39507bacc3
Peeking via MSC2753 (#1370)
Initial implementation of MSC2753, as tested by https://github.com/matrix-org/sytest/pull/944.
Doesn't yet handle unpeeks, peeked EDUs, or history viz changing during a peek - these will follow.
https://github.com/matrix-org/dendrite/pull/1370 has full details.
2020-09-10 14:39:18 +01:00
Neil Alexander
c63abc8660
Sync bug fixes (#1394)
* Sync bug fixes

* Remove logging
2020-09-04 11:20:47 +01:00
Kegsay
82a9617659
Put redactions/filters in the writer goroutine (#1378)
* Put redactions in the writer goroutine

* Update filters on writer goroutine
2020-09-01 20:35:38 +01:00
Neil Alexander
0ab5bccd11
Storage tweaks (#1373)
* Sync API tweaks

* User API tweaks
2020-09-01 11:28:35 +01:00
Neil Alexander
b0d2b39739
Remove unused SyncStreamPosition 2020-09-01 10:26:02 +01:00
Neil Alexander
c42c70597c
Add some error wrapping to sync API, use background context for sync (#1363)
* Add some error wrapping to sync API

* Don't use request context for BeginTx until mattn/go-sqlite3#764 is fixed
2020-08-28 13:28:40 +01:00
oliverpool
3205b9212d
[readability] use event.StateKeyEquals where relevant and minor for-loop refactoring (#1339)
* use event.StateKeyEquals where relevant

Signed-off-by: Olivier Charvin <git@olivier.pfad.fr>

* use userID
2020-08-25 21:04:35 +01:00
oliverpool
a4db43e096
Don't overwrite global err before return (#1293)
Signed-off-by: Olivier Charvin <git@olivier.pfad.fr>
2020-08-25 13:11:52 +01:00
Neil Alexander
9d53351dc2
Component-wide TransactionWriters (#1290)
* Offset updates take place using TransactionWriter

* Refactor TransactionWriter in current state server

* Refactor TransactionWriter in federation sender

* Refactor TransactionWriter in key server

* Refactor TransactionWriter in media API

* Refactor TransactionWriter in server key API

* Refactor TransactionWriter in sync API

* Refactor TransactionWriter in user API

* Fix deadlocking Sync API tests

* Un-deadlock device database

* Fix appservice API

* Rename TransactionWriters to Writers

* Move writers up a layer in sync API

* Document sqlutil.Writer interface

* Add note to Writer documentation
2020-08-21 10:42:08 +01:00
Neil Alexander
b24747b305
Transaction writer changes, move roomserver writers (#1285)
* Updated TransactionWriters, moved locks in roomserver, various other tweaks

* Fix redaction deadlocks

* Fix lint issue

* Rename SQLiteTransactionWriter to ExclusiveTransactionWriter

* Fix us not sending transactions through in latest events updater
2020-08-19 15:38:27 +01:00
Kegsay
0fdd4f14d1
Add support for logs in StreamingToken (#1229)
* Add support for logs in StreamingToken

Tokens now end up looking like `s11_22|dl-0-123|ab-0-12224`
where `dl` and `ab` are log names, `0` is the partition and
`123` and `12224` are the offsets.

* Also test reserialisation

* s/|/./g so tokens url escape nicely
2020-07-29 19:00:04 +01:00
Neil Alexander
b6bc132485
Use TransactionWriter in other component SQLite (#1209)
* Use TransactionWriter on other component SQLites

* Fix sync API tests

* Fix panic in media API

* Fix a couple of transactions

* Fix wrong query, add some logging output

* Add debug logging into StoreEvent

* Adjust InsertRoomNID

* Update logging
2020-07-21 15:48:21 +01:00
Neil Alexander
11a39fe3b5
Deduplicate FS database, EDU persistence table (#1207)
* Deduplicate FS database, add some EDU persistence groundwork

* Extend TransactionWriter to use optional existing transaction, use that for FS SQLite database writes

* Fix build due to bad keyserver import

* Working EDU persistence

* gocyclo, unsurprisingly

* Remove unused

* Update copyright notices
2020-07-20 16:55:20 +01:00
Kegsay
d9648b0615
Finish implementing redactions (#1189)
* Add a bit more logging to the fedsender

* bugfix: continue sending PDUs if ones are added whilst sending another PDU

Without this, the queue goes back to sleep on `<-oq.notifyPDUs` which won't
fire because `pendingPDUs` is already > 0. This should fix a flakey sytest.

* Break if no txn is sent

* WIP syncapi work

* More debugging

* Bump GMSL version to pull in working Event.Redact

* Remove logging

* Make redactions work on v3+

* Fix more tests
2020-07-08 17:45:39 +01:00
Kegsay
1ad7219e4b
Implement /sync limited and read timeline limit from stored filters (#1168)
* Move filter table to syncapi where it is used

* Implement /sync `limited` and read timeline limit from stored filters

We now fully handle `room.timeline.limit` filters (in-line + stored) and
return the right value for `limited` syncs.

* Update whitelist

* Default to the default timeline limit if it's unset, also strip the extra event correctly

* Update whitelist
2020-06-26 15:34:41 +01:00
Kegsay
4897beabee
Finish implementing retiring invites (#1166)
* Pass retired invites to the syncapi with the event ID of the invite

* Implement retire invite streaming

* Update whitelist
2020-06-26 11:07:52 +01:00
Kegsay
9c77022513
Make userapi responsible for checking access tokens (#1133)
* Make userapi responsible for checking access tokens

There's still plenty of dependencies on account/device DBs, but this
is a start. This is a breaking change as it adds a required config
value `listen.user_api`.

* Cleanup

* Review comments and test fix
2020-06-16 14:10:55 +01:00
Kegsay
ecd7accbad
Rehuffle where things are in the internal package (#1122)
renamed:    internal/eventcontent.go -> internal/eventutil/eventcontent.go
	renamed:    internal/events.go -> internal/eventutil/events.go
	renamed:    internal/types.go -> internal/eventutil/types.go
	renamed:    internal/http/http.go -> internal/httputil/http.go
	renamed:    internal/httpapi.go -> internal/httputil/httpapi.go
	renamed:    internal/httpapi_test.go -> internal/httputil/httpapi_test.go
	renamed:    internal/httpapis/paths.go -> internal/httputil/paths.go
	renamed:    internal/routing.go -> internal/httputil/routing.go
	renamed:    internal/basecomponent/base.go -> internal/setup/base.go
	renamed:    internal/basecomponent/flags.go -> internal/setup/flags.go
	renamed:    internal/partition_offset_table.go -> internal/sqlutil/partition_offset_table.go
	renamed:    internal/postgres.go -> internal/sqlutil/postgres.go
	renamed:    internal/postgres_wasm.go -> internal/sqlutil/postgres_wasm.go
	renamed:    internal/sql.go -> internal/sqlutil/sql.go
2020-06-12 14:55:57 +01:00
Neil Alexander
a5d822004d
Send-to-device support (#1072)
* Groundwork for send-to-device messaging

* Update sample config

* Add unstable routing for now

* Send to device consumer in sync API

* Start the send-to-device consumer

* fix indentation in dendrite-config.yaml

* Create send-to-device database tables, other tweaks

* Add some logic for send-to-device messages, add them into sync stream

* Handle incoming send-to-device messages, count them with EDU stream pos

* Undo changes to test

* pq.Array

* Fix sync

* Logging

* Fix a couple of transaction things, fix client API

* Add send-to-device test, hopefully fix bugs

* Comments

* Refactor a bit

* Fix schema

* Fix queries

* Debug logging

* Fix storing and retrieving of send-to-device messages

* Try to avoid database locks

* Update sync position

* Use latest sync position

* Jiggle about sync a bit

* Fix tests

* Break out the retrieval from the update/delete behaviour

* Comments

* nolint on getResponseWithPDUsForCompleteSync

* Try to line up sync tokens again

* Implement wildcard

* Add all send-to-device tests to whitelist, what could possibly go wrong?

* Only care about wildcard when targeted locally

* Deduplicate transactions

* Handle tokens properly, return immediately if waiting send-to-device messages

* Fix sync

* Update sytest-whitelist

* Fix copyright notice (need to do more of this)

* Comments, copyrights

* Return errors from Do, fix dendritejs

* Review comments

* Comments

* Constructor for TransactionWriter

* defletions

* Update gomatrixserverlib, sytest-blacklist
2020-06-01 17:50:19 +01:00
Neil Alexander
02fe38e1f7
Per-user-per-device sync streams (#1068)
* Per-user-per-device sync streams

* Tweaks

* Tweaks

* Pass full device into CompleteSync

* Set user IDs and device IDs properly in tests

* Add new test, fix TestNewEventAndWasPreviouslyJoinedToRoom

* nolint a function that is not used yet

* Add test for waking up single device

* Hopefully unstick test

* Try to ensure that TestCorrectStreamWakeup doesn't block forever

* Update tests
2020-05-28 10:05:04 +01:00
Kegsay
24d8df664c
Fix #897 and shuffle directory around (#1054)
* Fix #897 and shuffle directory around

* Update find-lint

* goimports

Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>
2020-05-21 14:40:13 +01:00
Kegsay
1414922026
sytest: Make 'Inbound federation can backfill events' pass (#1051)
* sytest: Make 'Inbound federation can backfill events' pass

This breaks 'Outbound federation can backfill events' because now
we are returning the right number of events, which the previous
test was relying on.

Previously, /messages was backfilling the membership event, causing
the test to pass. Now we are no longer backfilling the membership
event due to the change in this commit, causing the test to fail.

The test should instead be returning the membership event locally
from synacpis database, but it doesn't do it fast enough, resulting
in a no-op /sync response with a next_batch=s0_0 which will never
pick up the local membership event when it rolls in. The test
does attempt to retry, but doesn't take the new next_batch=s1_0
resulting in it missing from the /messages response.

* Linting
2020-05-20 16:04:31 +01:00
Kegsay
2b5052eccf
Add Range (#1037)
* Add Range

* Use Range
2020-05-15 09:41:12 +01:00
Kegsay
7ca230e931
Cleanup syncapi topology logic (#1035)
* Cleanup syncapi topology logic

* Variable renaming

* comments
2020-05-14 17:30:16 +01:00
Kegsay
1b34130a5b
Finish merging syncserver.go (#1033)
* Refactor all postgres tables; start work on sqlite

* wip sqlite merges; database is locked errors to investigate and failing tests

* Revert "wip sqlite merges; database is locked errors to investigate and failing tests"

This reverts commit 26cbfc5b75ae2dc4fb31a838b917aa39d758f162.

* convert current room state table

* port over sqlite topology table

* remove a few functions

* remove more functions

* Share more code

* factor out completesync and a bit more

* Remove remaining code
2020-05-14 16:11:37 +01:00
Kegsay
9ed68a3125
Factor out account data and events table (#1031)
* Factor out account data

* Factor out events table and EDU cache

* linting

* fix npe
2020-05-14 09:53:55 +01:00
Kegsay
a25d477cdb
Initial syncapi storage refactor to share pq/sqlite code (#1030)
* Initial syncapi storage refactor to share pq/sqlite code

This goes down a different route than https://github.com/matrix-org/dendrite/pull/985
which tried to even reduce the boilerplate of `ExecContext` etc. The previous pattern
fails badly when there are subtle differences in parameters and hence the shared
boilerplate to read from `QueryContext` breaks. Rather than attacking it at that level,
the main place where we want to reuse code is for the `syncserver.go` itself - the
database implementation which has lots of complex logic. So instead, this commit:
 - Makes `invites_table.go` an interface.
 - Makes `SyncServerDatasource` use that interface
 - This means some functions are now identical for pq/sqlite, so factor them out
   to a temporary `shared.Database` struct which will grow until it replaces all of
   `SyncServerDatasource`.

* Missing files
2020-05-13 17:28:42 +01:00