* Make PerformJoin send input membership event
* Invite input room events in separate goroutine
* Don't limit roomserver input events using request context
* Synchronous input room events
* Nope, that didn't work
* oops send state key to GetMembership
* Don't generate stripped state in client API more times than necessary, generate output events on receiving end of federated invite
* Commit membership updater changes
* Tweaks
- As a last resort, query the DB when exhausting all possible remote query
endpoints, but keep the field in `failures` so clients can detect that this
is stale data.
- Unblock `DeviceListUpdater.Update` on failures rather than timing out.
- Use a mutex when writing directly to `res`, not just for failures.
* WIP: Eagerly sync device lists on /user/keys/query requests
Also notify servers when a user's device display name changes. Few
caveats:
- sytest `Device deletion propagates over federation` fails
- `populateResponseWithDeviceKeysFromDatabase` is called from multiple
goroutines and hence is unsafe.
* Handle deleted devices correctly over federation
* Add sync mechanism to block when updating device lists
With a timeout, mainly for sytest to fix the test
"Server correctly handles incoming m.device_list_update"
which is flakey because it assumes that when `/send` 200 OKs
that the server has updated the device lists in prep for
`/keys/query` which is not always true when using workers.
* Fix UT
* Add new working test
* First pass at server ACLs (not efficient)
* Use transaction origin, update whitelist
* Fix federation API test
It's sufficient for us to return nothing in response to current state, so that the server ACL check returns no ACLs.
* More efficient server ACLs - hopefully
* Fix queries
* Fix queries
* Avoid panics by nil pointers
* Bug fixes
* Fix state event type
* Fix mutex
* Update logging
* Ignore port when matching servername
* Use read mutex
* Fix bugs
* Fix sync API test
* Comments
* Add tests, tweaks to behaviour
* Fix test output
* Add tests for device list updates
* Add stale_device_lists table and use db before asking remote for device keys
* Fetch remote keys if all devices are requested
* Add display_name col to store remote device names
Few other tweaks to make `Server correctly handles incoming m.device_list_update`
pass.
* Fix sqlite otk bug
* Unbuffered channel to block /send causing sytest to not race anymore
* Linting and fix bug whereby we didn't send updated dl tokens to the client causing a tightloop on /sync sometimes
* No longer assert staleness as Update blocks on workers now
* Back out tweaks
* Bugfixes
* Fix New users appear in /keys/changes
* Create blank device keys when logging in on a new device
* Add PerformDeviceUpdate and fix a few bugs
- Correct device deletion query on sqlite
- Return no keys on /keys/query rather than an empty key
* Unbreak sqlite properly
* Use a real DB for currentstateserver integration tests
* Race fix
* Recheck device lists when join/leave events come in
* Add PerformDeviceDeletion
* Notify clients when devices are deleted
* Unbreak things
* Remove debug logging
* User directory
* Fix syncapi unit test
* Make user directory only show remote users you know about from your joined rooms
* Update sytest-whitelist
* Review comments
* Modify /state/{eventType}/{stateKey} to return the event at the time the user left
Or live, depending on their current state. Hopefully fixes some sytests!
* Linting
* Set HasBeenInRoom
* Fix cases for world-readable history visibility
* Fix bug in finding the requested state event
Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>
* Add storage layer for postgres/sqlite
* Return OTK counts when inserting new keys
* Hook up the key DB and make a test pass
* Convert postgres queries to be sqlite queries
* Blacklist test due to requiring rejected events
* Unbreak tests
* Update blacklist
* Initial work to send send-to-device messages over federation
* Wire up send-to-device consumer, message formatting
* Generate random message ID
* Review comments, update sytest whitelist
* Add User-Interactive Authentication
And use it when deleting a device. With tests.
* Make remaining sytest pass
* Linting
* 403 not 401 on wrong user/pass
* 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
* Use content_value instead of membership
* Fix build
* Replace publicroomsapi with a combination of clientapi/roomserver/currentstateserver
- All public rooms paths are now handled by clientapi
- Requests to (un)publish rooms are sent to the roomserver via `PerformPublish`
which are stored in a new `published_table.go`
- Requests for public rooms are handled in clientapi by:
* Fetch all room IDs which are published using `QueryPublishedRooms` on the roomserver.
* Apply pagination parameters to the slice.
* Do a `QueryBulkStateContent` request to the currentstateserver to pull out
required state event *content* (not entire events).
* Aggregate and return the chunk.
Mostly but not fully implemented (DB queries on currentstateserver are missing)
* Fix pq query
* Make postgres work
* Make sqlite work
* Fix tests
* Unbreak pagination tests
* Linting
* 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
* Return remote errors from FS.PerformJoin
Follows the same pattern as PerformJoin on roomserver (no error return).
Also return the right format for incompatible room version errors.
Makes a bunch of tests pass!
* Handle network errors better when returning remote HTTP errors
* Linting
* Fix tests
* Update whitelist, pass network errors through in API=1 mode
* Pass join errors through internal API boundaries
Required for certain invite sytests. We will need to think of a
better way of handling this going forwards.
* Include m.room.avatar in stripped state; handle trailing slashes when GETing state events
* Update whitelist
* Update whitelist
We would return a 403 first (as the server would not be allowed to
see this event) and only then return a 404 if the event is not in
the given room. We now invert those checks for /state and /state_ids
to make the tests pass.
* Derive content ID from hash+filename but preserve dedupe, improve Content-Disposition handling and ASCII handling
* Linter fix
* Some more comments
* Update sytest-whitelist
* Return bad request on CS API /send if bad JSON
* Return some more M_BAD_JSON in the right places
* nolint because damnit gocyclo all I added was a type check for an error
* Update gomatrixserverlib
* Update gomatrixserverlib
* Update sytest-whitelist
* Update gomatrixserverlib
* Update sytest-whitelist
* NotJSON -> BadJSON
* 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
* Add missing routing for PerformDirectoryLookupRequest
* Tweak output
* Fix some bugs in devices
* Don't default to federated room joins in response to invite
* Update sytest-whitelist
* Update comments
* Return correct room ID from PerformJoin
* Fix appservice and EDU server API setup, update sytest-whitelist
* Update sytest-whitelist
* 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
* WIP get_missing_events work
* More WIP get_missing_events work
* First working /get_missing_events implementation
Flakey currently due to racing between /sync and /send
* Final tweaks
* Remove log lines
* Linting
* go mod tidy
* Clamp min depth to 0
* sort events by depth because sytest makes me sad
Specifically I think it's
4172585c25/lib/SyTest/Federation/Client.pm (L265)
to blame here.
* Update gomatrixserverlib
* Test matrix.org as perspective key server
* Base64 decode better
* Optional strict validity checking in gmsl
* Update gomatrixserverlib
* Attempt to find missing auth events over federation (this shouldn't happen but I am guessing there is a synapse bug involved where we don't get all of the auth events)
* Update gomatrixserverlib, debug logging
* Remove debugging output
* More verbose debugging
* Print outliers
* Increase timeouts for testing, observe contexts before trying to join over more servers
* Don't block on roomserver (experimental)
* Don't block on roomserver
* Update gomatrixserverlib
* Update gomatrixserverlib
* Configurable perspective key fetchers
* Output number of configured keys for perspective
* Example perspective config included
* Undo debug stack trace
* Undo debug stack trace
* Restore original HTTP listener in monolith
* Fix lint
* Review comments
* Set default HTTP server timeout to 5 minutes now, block again when joining
* Don't use HTTP address for HTTPS whoops
* Update gomatrixserverlib
* Update gomatrixserverlib
* Update gomatrixserverlib
* Actually add perspectives
* Actually add perspectives
* Update gomatrixserverlib
* Update gomatrixserverlib
* Default to room version 4
* Update gomatrixserverlib
* Limit prev_events and auth_events
* Fix auth_events, prev_events
* Fix linter issues
* Update gomatrixserverlib
* Fix getState
* Update sytest-whitelist
* Squashed commit of the following:
commit 067b875063
Author: Neil Alexander <neilalexander@users.noreply.github.com>
Date: Fri Apr 3 14:29:06 2020 +0100
Invites v2 endpoint (#952)
* Start converting v1 invite endpoint to v2
* Update gomatrixserverlib
* Early federationsender code for sending invites
* Sending invites sorta happens now
* Populate invite request with stripped state
* Remodel a bit, don't reflect received invites
* Handle invite_room_state
* Handle room versions a bit better
* Update gomatrixserverlib
* Tweak order in destinationQueue.next
* Revert check in processMessage
* Tweak federation sender destination queue code a bit
* Add comments
commit 955244c092
Author: Ben B <benne@klimlive.de>
Date: Fri Apr 3 12:40:50 2020 +0200
use custom http client instead of the http DefaultClient (#823)
This commit replaces the default client from the http lib with a custom one.
The previously used default client doesn't come with a timeout. This could cause
unwanted locks.
That solution chosen here creates a http client in the base component dendrite
with a constant timeout of 30 seconds. If it should be necessary to overwrite
this, we could include the timeout in the dendrite configuration.
Here it would be a good idea to extend the type "Address" by a timeout and
create an http client for each service.
Closes#820
Signed-off-by: Benedikt Bongartz <benne@klimlive.de>
Co-authored-by: Kegsay <kegan@matrix.org>
* Update sytest-whitelist, sytest-blacklist
* Update go.mod/go.sum
* Add some error wrapping for debug
* Add a NOTSPEC to common/events.go
* Perform state resolution at send_join
* Set default room version to v2 again
* Tweak GetCapabilities
* Add comments to ResolveConflictsAdhoc
* Update sytest-blacklist
* go mod tidy
* Update sytest-whitelist, sytest-blacklist
* Update versions
* Updates from review comments
* Update sytest-blacklist, sytest-whitelist
* Check room versions compatible at make_join, add some comments, update gomatrixserverlib, other tweaks
* Set default room version back to v2
* Update gomatrixserverlib, sytest-whitelist
* Start converting v1 invite endpoint to v2
* Update gomatrixserverlib
* Early federationsender code for sending invites
* Sending invites sorta happens now
* Populate invite request with stripped state
* Remodel a bit, don't reflect received invites
* Handle invite_room_state
* Handle room versions a bit better
* Update gomatrixserverlib
* Tweak order in destinationQueue.next
* Revert check in processMessage
* Tweak federation sender destination queue code a bit
* Add comments
* Room version 2 by default, other wiring updates, update gomatrixserverlib
* Fix nil pointer exception
* Fix some more nil pointer exceptions hopefully
* Update gomatrixserverlib
* Send all room versions when joining, not just stable ones
* Remove room version cquery
* Get room version when getting events from the roomserver database
* Reset default back to room version 2
* Don't generate event IDs unless needed
* Revert "Remove room version cquery"
This reverts commit a170d5873360dd059614460acc8b21ab2cda9767.
* Query room version in federation API, client API as needed
* Improvements to make_join send_join dance
* Make room server producers use headered events
* Lint tweaks
* Update gomatrixserverlib
* Versioned SendJoin
* Query room version in syncapi backfill
* Handle transaction marshalling/unmarshalling within Dendrite
* Sorta fix federation (kinda)
* whoops commit federation API too
* Use NewEventFromTrustedJSON when getting events from the database
* Update gomatrixserverlib
* Strip headers on federationapi endpoints
* Fix bug in clientapi profile room version query
* Update gomatrixserverlib
* Return more useful error if room version query doesn't find the room
* Update gomatrixserverlib
* Update gomatrixserverlib
* Maybe fix federation
* Fix formatting directive
* Update sytest whitelist and blacklist
* Temporarily disable room versions 3 and 4 until gmsl is fixed
* Fix count of EDUs in logging
* Update gomatrixserverlib
* Update gomatrixserverlib
* Update gomatrixserverlib
* Rely on EventBuilder in gmsl to generate the event IDs for us
* Some review comments fixed
* Move function out of common and into gmsl
* Comment in federationsender destinationqueue
* Update gomatrixserverlib
* Implement history visibility checks for /backfill
Required for p2p to show history correctly.
* Add sytest
* Logging
* Fix two backfill bugs which prevented backfill from working correctly
- When receiving backfill requests, do not send the event that was in the original request.
- When storing backfill results, correctly update the backwards extremity for the room.
* hack: make backfill work multiple times
* add sqlite impl and remove logging
* Linting
* Add room version into createRoomReq
* Extract room version from m.room.create event when persisting
* Reduce cyclomatic complexity
* Update whitelist, gomatrixserverlib, tweaks to roomserver
* Update sytest-whitelist again
* Upgrade gomatrixserverlib dependency
Signed-off-by: Thibaut CHARLES cromfr@gmail.com
* Added missing passing sytest
Signed-off-by: Thibaut CHARLES cromfr@gmail.com
* Fix login using identifier key
Not a full fix, it only really supports logging in with
the localpart of an mxid.
Signed-off-by: Serra Allgood <serra@allgood.dev>
* Replace deprecated prometheus.InstrumentHandler and unsafe time.Ticker
* goimports
* re-add temporarily missing deps?
* Refactor InstrumentHandlerCounter definition
* URL decode args
* Return server names (#833)
* Remove unnecessary map->array processing
* Return server names in room federation directory query
* Knock off a TODO
* Fix /send_join and /send_leave (#821)
Fix the /send_join and /send_leave endpoints, so that they use the v2 endpoints as mandated by MSC1802. Also comment out the SyTest tests that are failing because of lack of support for the v1 endpoints.
* Refuse /send_join without m.room.create (#824)
Signed-off-by: Abhishek Kumar <abhishekkumar2718@gmail.com>
* AS should use the v1 endpoint, rather than r0 (#827)
* docker: Passthrough parameters to dendrite-monolith-server
* Fix copy & paste error (#812)
* Use gomatrixserverlib.Transaction instead of local type (#590) (#811)
* Move files back if linting fails (#810)
* replaced gometalinter description with golangci-lint (#837)
* Amend syncapi SQL queries to return missing columns (#840)
* This commit updates a couple of the syncapi SQL queries to return additional columns that are required/expected by rowsToStreamEvents in output_room_events_table.go.
It's not exactly clear to me yet what transaction_id and session_id do, but these being added n #367 results in state events breaking the /sync endpoint.
This is a temporary fix. We need to come up with a better solution.
* gomatrix to gomatrixserverlib on some weird line change
* Tweaks from @babolivier review comments
* Implement storage interfaces (#841)
* Implement interfaces for federationsender storage
* Implement interfaces for mediaapi storage
* Implement interfaces for publicroomsapi storage
* Implement interfaces for roomserver storage
* Implement interfaces for syncapi storage
* Implement interfaces for keydb storage
* common.PartitionStorer in publicroomsapi interface
* Update copyright notices
* make cmd directory path absolute in build.sh (#830)
* Resync testfile with current sytest pass/fail (#832)
* Resync testfile with current sytest pass/fail
* Add displayname test
* Fall back to postgres when database connection string parsing fails (#842)
* Fall back to postgres when parsing the database connection string for a URI schema fails
* Fix behaviour so that it really tries postgres when URL parsing fails and it complains about unknown schema if it succeeds
* Fix#842
* Fix#842 - again...
* Federation fixes (#845)
* Update gomatrixserverlib to p2p commit 92c0338, other tweaks
* Update gomatrixserverlib to p2p commit e5dcc65
* Rewrite getAuthChain
* Update gomatrixserverlib in go.mod/go.sum
* Correct a couple of package refs for updated gmsl/gomatrix
* Update gomatrixserverlib ref in go.mod/go.sum
* Update getAuthChain comments following @babolivier review
* Add a Sytest blacklist file (#849)
* Add more passing tests to the testfile, add test blacklist file (#848)
* CS API: Support for /messages, fixes for /sync (#847)
* Merge forward
* Tidy up a bit
* TODO: What to do with NextBatch here?
* Replace SyncPosition with PaginationToken throughout syncapi
* Fix PaginationTokens
* Fix lint errors
* Add a couple of missing functions into the syncapi external storage interface
* Some updates based on review comments from @babolivier
* Some updates based on review comments from @babolivier
* argh whitespacing
* Fix opentracing span
* Remove dead code
* Don't overshadow err (fix lint issue)
* Handle extremities after inserting event into topology
* Try insert event topology as ON CONFLICT DO NOTHING
* Prevent OOB error in addRoomDeltaToResponse
* Thwarted by gocyclo again
* Fix NewPaginationTokenFromString, define unit test for it
* Update pagination token test
* Update sytest-whitelist
* Hopefully fix some of the sync batch tokens
* Remove extraneous sync position func
* Revert to topology tokens in addRoomDeltaToResponse etc
* Fix typo
* Remove prevPDUPos as dead now that backwardTopologyPos is used instead
* Fix selectEventsWithEventIDsSQL
* Update sytest-blacklist
* Update sytest-whitelist
* Some fixes for #847 (#850)
* Fix a couple of cases where backfilling events we already had causes panics, hopefully fix ordering of events, update GMSL dependency for backfill URL fixes
* Remove commented out lines from output_room_events_table schema
* Wire up publicroomsapi for roomserver events (#851)
* Wire up publicroomsapi to roomserver events
* Remove parameter that was incorrectly brought over from p2p work
* nolint containsBackwardExtremity for now
* Store our own keys in the keydb (#853)
* Store our own keys in the keydb
The DirectKeyFetcher makes the assumption that you can always reach the key/v2/server endpoint of any server, including our own. We previously haven't bothered to store our own keys in the keydb so this would mean we end up making key requests to ourselves.
In the libp2p world as an example, self-dialling is not possible, therefore this would render it impossible to get our own keys.
This commit adds our own keys into the keydb so that we don't create unnecessarily (and maybe impossible) requests.
* Use golang.org/x/crypto/ed25519 instead of crypto/ed25519 for pre-Go 1.13
* More sync fixes (#854)
* Further sync tweaks
* Remove unnecessary blank line
* getBackwardTopologyPos always returns a usable value
* Revert order fixing
* Implement GET endpoints for account_data in clientapi (#861)
* Implement GET endpoints for account_data in clientapi
* Fix accountDB parameter
* Remove fmt.Println
* Add empty push rules into account data on account creation (#862)
* Handle kind=guest query parameter on /register (#860)
* Handle kind=guest query parameter on /register
* Reorganized imports
* Pass device_id as nil
* Added tests to systest-whitelist
* Update sytest-whitelist
* Blacklist 'displayname updates affect room member events' (#859)
* Room version abstractions (#865)
* Rough first pass at adding room version abstractions
* Define newer room versions
* Update room version metadata
* Fix roomserver/versions
* Try to fix whitespace in roomsSchema
* Implement room version capabilities in CS API (#866)
* Add wiring for querying the roomserver for the default room version
* Try to implement /capabilities for room versions
* Update copyright notices
* Update sytests, add /capabilities endpoint into CS API
* Update sytest-whitelist
* Add GetDefaultRoomVersion
* Fix cases where state package was shadowed
* Fix version formatting
* Update Dockerfile to Go 1.13.6
* oh yes types I remember
* And fix the default too
* Update documentation for Go 1.13 (#867)
* Pass cfg by reference around the codebase (#819)
* Pass cfg by reference around the codebase
* Merge branch 'master' into pass-cfg-by-ref
Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>
* Implement missing device management features (#835)
* Implement missing device management features
Signed-off-by: Till Faelligen <tfaelligen@gmail.com>
* Add a little more documentation
* Undo changes
* Use non-anonymous struct to decode devices list
* Update sytest-whitelist
* Update sytest-whitelist
* Update sytest-blacklist
Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>
* Adding sslmode: disable to sytest server config (#813)
Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>
* Fix AppService bind addrs in test (#805)
Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>
* Always defer *sql.Rows.Close and consult with Err (#844)
* Always defer *sql.Rows.Close and consult with Err
database/sql.Rows.Next() makes sure to call Close only after exhausting
result rows which would NOT happen when returning early from a bad Scan.
Close being idempotent makes it a great candidate to get always deferred
regardless of what happens later on the result set.
This change also makes sure call Err() after exhausting Next() and
propagate non-nil results from it as the documentation advises.
Closes#764
Signed-off-by: Kiril Vladimiroff <kiril@vladimiroff.org>
* Override named result parameters in last returns
Signed-off-by: Kiril Vladimiroff <kiril@vladimiroff.org>
* Do the same over new changes that got merged
Signed-off-by: Kiril Vladimiroff <kiril@vladimiroff.org>
Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>
* Clean up
Co-authored-by: Serra Allgood <serra@allgood.dev>
Co-authored-by: Andrew Morgan <1342360+anoadragon453@users.noreply.github.com>
Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>
Co-authored-by: Brendan Abolivier <github@brendanabolivier.com>
Co-authored-by: Abhishek Kumar <31231064+abhishekkumar2718@users.noreply.github.com>
Co-authored-by: Will Hunt <will@half-shot.uk>
Co-authored-by: S7evinK <tfaelligen@gmail.com>
Co-authored-by: Arshpreet <30545756+arsh-7@users.noreply.github.com>
Co-authored-by: Prateek Sachan <42961174+prateek2211@users.noreply.github.com>
Co-authored-by: Behouba Manassé <behouba@gmail.com>
Co-authored-by: aditsachde <23707194+aditsachde@users.noreply.github.com>
Co-authored-by: Kiril Vladimiroff <kiril@vladimiroff.org>
* Add wiring for querying the roomserver for the default room version
* Try to implement /capabilities for room versions
* Update copyright notices
* Update sytests, add /capabilities endpoint into CS API
* Update sytest-whitelist
* Add GetDefaultRoomVersion
* Fix cases where state package was shadowed
* Fix version formatting
* Update Dockerfile to Go 1.13.6
* oh yes types I remember
* And fix the default too
* Merge forward
* Tidy up a bit
* TODO: What to do with NextBatch here?
* Replace SyncPosition with PaginationToken throughout syncapi
* Fix PaginationTokens
* Fix lint errors
* Add a couple of missing functions into the syncapi external storage interface
* Some updates based on review comments from @babolivier
* Some updates based on review comments from @babolivier
* argh whitespacing
* Fix opentracing span
* Remove dead code
* Don't overshadow err (fix lint issue)
* Handle extremities after inserting event into topology
* Try insert event topology as ON CONFLICT DO NOTHING
* Prevent OOB error in addRoomDeltaToResponse
* Thwarted by gocyclo again
* Fix NewPaginationTokenFromString, define unit test for it
* Update pagination token test
* Update sytest-whitelist
* Hopefully fix some of the sync batch tokens
* Remove extraneous sync position func
* Revert to topology tokens in addRoomDeltaToResponse etc
* Fix typo
* Remove prevPDUPos as dead now that backwardTopologyPos is used instead
* Fix selectEventsWithEventIDsSQL
* Update sytest-blacklist
* Update sytest-whitelist
