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initial http api proposal for initialsync, eventstream and history

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+ our theoretical design workflow atm
pull/977/head
Matthew Hodgson 10 years ago
parent e283d8e4ea
commit 91ad3924fc
2 changed files with 180 additions and 21 deletions
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187
drafts/cs-v2-http-api.rst
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@ -28,8 +28,8 @@ POST /user/{userId}/filter
{
// selectors: (bluntly selecting on the unencrypted fields)
types: [ "m.*", "net.arasphere.*" ], // default: all
rooms: [ "!83wy7whi:matrix.org" ], // default: all
sender_ids: [ "@matthew:matrix.org" ], // default: all (e.g. for narrowing down presence, and stalker mode)
rooms: [ "!83wy7whi:matrix.org" ], // default: all (may be aliases or IDs. wildcards supported)
sender_ids: [ "@matthew:matrix.org" ], // default: all (e.g. for narrowing down presence, and stalker mode. wildcards supported)
// XXX: do we want this per-query; is it valid to reuse it?
// we probably don't need this as querying per-event-ID will be a parameter from a seperate API,
@ -49,7 +49,7 @@ POST /user/{userId}/filter
// sorting/pagination/threading
select: [ "event_id", "origin_server_ts", "thread_id", "content", "content.body" ],
// include bundled child-event updates
// include bundled child-event updates (default false)
bundle_updates: true,
// include bundled related events
@ -91,6 +91,7 @@ POST /user/{userId}/filter
],
}
Returns:
200 OK
{
"filter_id": "583e98c2d983",
@ -100,28 +101,36 @@ POST /user/{userId}/filter
Global initial sync API
-----------------------
XXX: need much more concrete general API definition first
GET /initialSync
GET parameters::
limit: maximum number of events
<generic pagination parameters (per room)>
<some way of doing an incremental sync using streaming_tokens>
filter: filter_id (XXX: allow different filters per room?)
presence: true/false
limit: maximum number of events per room to return
sort: fieldname, direction (e.g. "sender_id,asc"). // default: "timeline,asc". may appear multiple times.
since: <chunk token> to request an incremental update (*not* pagination) since the specified chunk token
We call this 'since' rather than 'from' because it's not for pagination,
backfill: true/false (default true): do we want to pull in state from federation if we have less than <limit> events available for a room?
presence: true/false (default true): return presence info
compact: boolean (default false): factor out common events.
XXX: I *really* think this should be turned on by default --matthew
FIXME: example using v1 API just for compact proofing. Needs to be updated with streaming_token voodoo
filter: <filter_id> (XXX: allow different filters per room?)
# filter overrides:
filter_type: wildcard event type match e.g. "m.*": default, all. may appear multiple times.
filter_room: wildcard room id/name match e.g. "!83wy7whi:matrix.org": default, all. may appear multiple times.
filter_sender_id: wildcard sender id match e.g. "@matthew:matrix.org": default, all. may appear multiple times.
filter_event_id: event id to match e.g. "$192318719:matrix.org" // default, all: may appear multiple times
filter_format: "federation" or "events"
filter_select: event fields to return: default, all. may appear multiple times
filter_bundle_updates: true/false: default, false. bundle updates in events.
// FIXME: kegan: how much does the v1 response actually change here?
Returns:
200 OK
// where compact is false:
{
// XXX: does "end" die now?
"end": "s72595_4483_1934",
"end": "s72595_4483_1934", // the chunk token we pass to from=
// global presence info. (XXX: should we only send content deltas if this is an delta initialsync - e.g. to avoid re-sending all avatar_urls?)
// global presence info (if presence=true)
"presence": [{
"content": {
"avatar_url": "http://matrix.tp.mu:8008/_matrix/content/QG1hdHRoZXc6dHAubXUOeJQMWFMvUdqdeLovZKsyaOT.aW1hZ2UvanBlZw==.jpeg",
@ -135,7 +144,7 @@ FIXME: example using v1 API just for compact proofing. Needs to be updated with
"rooms": [{
"membership": "join",
"messages": {
"eventStream": { // rename messages to eventstream as this is a list of all events, not just messages (non-state events)
"chunk": [{
"content": {
"avatar_url": "https://matrix.org/_matrix/content/QG1hdHRoZXc6bWF0cml4Lm9yZwxaesQWnqdynuXIYaRisFnZdG.aW1hZ2UvanBlZw==.jpeg",
@ -217,10 +226,10 @@ FIXME: example using v1 API just for compact proofing. Needs to be updated with
}
},
"membership": "join",
"messages": {
"eventStream": { // rename messages to eventstream as this is a list of all events, not just messages (non-state events)
"chunk": [ "$1417731086506PgoVf:matrix.org" ],
"end": "s72595_4483_1934",
"start": "t67-41151_4483_1934"
"start": "t67-41151_4483_1934" // XXX: do we need start?
},
"room_id": "!KrLWMLDnZAyTapqLWW:matrix.org",
"state": [ "$1417731086506PgoVf:matrix.org" ],
@ -231,17 +240,141 @@ FIXME: example using v1 API just for compact proofing. Needs to be updated with
Event Stream API
----------------
GET /eventStream
GET parameters::
from: chunk token to continue streaming from (e.g. "end" given by initialsync)
filter*: as per initialSync (XXX: do we inherit this from the chunk token?)
// N.B. there is no limit or sort param here, as we get events in timeline order as fast as they come.
access_token: identifies both user and device
timeout: maximum time to poll before returning the request
presence: "offline" // optional parameter to tell the server not to interpret this as coming online
XXX: this needs to be updated from v1. Presumably s/user_id/sender_id/?
Returns:
200 OK
// events precisely as per a room's eventStream key as returned by initialSync
// includes non-graph events like presence
{
"chunk": [{
"content": {
"avatar_url": "https://matrix.org/_matrix/content/QG1hdHRoZXc6bWF0cml4Lm9yZwxaesQWnqdynuXIYaRisFnZdG.aW1hZ2UvanBlZw==.jpeg",
"displayname": "Matthew",
"last_active_ago": 1241,
"presence": "online",
"user_id": "@matthew:matrix.org"
},
"type": "m.presence"
}, {
"age": 2595,
"content": {
"body": "test",
"msgtype": "m.text"
},
"event_id": "$14211894201675TMbmz:matrix.org",
"origin_server_ts": 1421189420147,
"room_id": "!cURbafjkfsMDVwdRDQ:matrix.org",
"type": "m.room.message",
"user_id": "@matthew:matrix.org"
}],
"end": "s75460_2478_981",
"start": "s75459_2477_981" // XXX: do we need start here?
}
Room Creation API
-----------------
Joining API
-----------
Room History
------------
Scrollback API
--------------
~~~~~~~~~~~~~~
GET /rooms/<room_id>/events
GET parameters::
from: the chunk token to paginate from
Otherwise same as initialSync, except "compact", "since" and "presence" are not implemented
Returns:
200 OK
// events precisely as per a room's eventStream key as returned by initialSync
{
"chunk": [{
"age": 28153452, // XXX: age and origin_server_ts are redundant here surely
"content": {
"body": "but obviously the XSF believes XMPP is the One True Way",
"msgtype": "m.text"
},
"event_id": "$1421165049511TJpDp:matrix.org",
"origin_server_ts": 1421165049435,
"room_id": "!cURbafjkfsMDVwdRDQ:matrix.org",
"type": "m.room.message",
"user_id": "@irc_Arathorn:matrix.org"
}, {
"age": 28167245,
"content": {
"body": "which is all fair enough",
"msgtype": "m.text"
},
"event_id": "$1421165035510CBwsU:matrix.org",
"origin_server_ts": 1421165035643,
"room_id": "!cURbafjkfsMDVwdRDQ:matrix.org",
"type": "m.room.message",
"user_id": "@irc_Arathorn:matrix.org"
}],
"end": "t9571-74545_2470_979",
"start": "t9601-75400_2470_979" // XXX: don't we just need end here as we can only paginate one way?
}
Contextual windowing API
------------------------
~~~~~~~~~~~~~~~~~~~~~~~~
GET /events/<event_id>
GET parameters:
context: "before", "after" or "around"
Otherwise same as initialSync, except "since" and "presence" are not implemented
Returns:
200 OK
// the room in question, formatted exactly as a room entry returned by /initialSync
// with the event in question present in the list as determined by the context param
{
"events": {
"$1417731086506PgoVf:matrix.org": {
"content": {
"avatar_url": "https://matrix.org/_matrix/content/QG1hdHRoZXc6bWF0cml4Lm9yZwxaesQWnqdynuXIYaRisFnZdG.aW1hZ2UvanBlZw==.jpeg",
"displayname": "Matthew",
"membership": "join"
},
"membership": "join",
"origin_server_ts": 1417731086795,
"prev_state": [["$1416420706925RVAWP:matrix.org", {
"sha256": "zVzi02R5aeO2HQDnybu1XuuyR6yBG8utLE/i1Sv8eyA"
}
]],
"room_id": "!KrLWMLDnZAyTapqLWW:matrix.org",
"state_key": "@matthew:matrix.org",
"type": "m.room.member",
"user_id": "@matthew:matrix.org"
}
},
"membership": "join",
"eventStream": {
"chunk": [ "$1417731086506PgoVf:matrix.org" ],
"end": "s72595_4483_1934",
"start": "t67-41151_4483_1934"
},
"room_id": "!KrLWMLDnZAyTapqLWW:matrix.org",
"state": [ "$1417731086506PgoVf:matrix.org" ],
"visibility": "public"
}
Room Alias API
--------------
@ -270,6 +403,18 @@ Actions API
Presence API
------------
PUT /user/{userId}/presence/m.status // set DND/asleep/on holiday etc -
// XXX: do we need to distinguish between internationalisable presets like DND
// and free-form textual status messages?
// XXX: should this be in /user/{userId}/data/m.status instead?
// what's actually the difference? surely status is no different to avatar
// updates in terms of needing to be pushed around
PUT /device/{deviceId}/presence/m.presence // explicitly set online/idle/offline
// or /presence/device/{deviceId}
// XXX: need to remember how to handle activity notifications
Typing API
----------

14
drafts/design_workflow.rst
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@ -0,0 +1,14 @@
Matrix Spec Design Workflow
===========================
1. Write use cases
2. Design data flows for use cases
3. Design generic API (factoring out commonalities where possible)
4. Design transport-specific API with justifications
5. Formalise transport-specific API as swagger or similar
6. Evolve the generic API design doc and transport-specific API into the actual spec.
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