# Copyright 2021 The Matrix.org Foundation C.I.C. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. openapi: 3.1.0 info: title: Matrix Federation Space Hierarchy API version: 1.0.0 paths: "/hierarchy/{roomId}": get: x-addedInMatrixVersion: "1.2" summary: Retrieve a portion of a space tree. description: |- Federation version of the Client-Server [`GET /hierarchy`](/client-server-api/#get_matrixclientv1roomsroomidhierarchy) endpoint. Unlike the Client-Server API version, this endpoint does not paginate. Instead, all the space-room's children the requesting server could feasibly peek/join are returned. The requesting server is responsible for filtering the results further down for the user's request. Only [`m.space.child`](/client-server-api/#mspacechild) state events of the room are considered. Invalid child rooms and parent events are not covered by this endpoint. Responses to this endpoint should be cached for a period of time. operationId: getSpaceHierarchy security: - signedRequest: [] parameters: - in: path name: roomId description: The room ID of the space to get a hierarchy for. required: true example: "!space:example.org" schema: type: string - in: query name: suggested_only description: |- Optional (default `false`) flag to indicate whether or not the server should only consider suggested rooms. Suggested rooms are annotated in their [`m.space.child`](/client-server-api/#mspacechild) event contents. example: true schema: type: boolean responses: "200": description: The space room and its children. content: application/json: schema: type: object properties: room: description: A summary of the room requested. allOf: - $ref: ../client-server/definitions/public_rooms_chunk.yaml - type: object title: SpaceHierarchyParentRoom properties: room_type: type: string description: The `type` of room (from [`m.room.create`](/client-server-api/#mroomcreate)), if any. allowed_room_ids: type: array items: type: string description: |- If the room is a [restricted room](/server-server-api/#restricted-rooms), these are the room IDs which are specified by the join rules. Empty or omitted otherwise. children_state: type: array description: |- The [`m.space.child`](/client-server-api/#mspacechild) events of the space-room, represented as [Stripped State Events](/client-server-api/#stripped-state) with an added `origin_server_ts` key. If the room is not a space-room, this should be empty. items: allOf: - $ref: ../../event-schemas/schema/core-event-schema/stripped_state.yaml - type: object properties: origin_server_ts: type: integer format: int64 description: The `origin_server_ts` for the event. required: - origin_server_ts required: - children_state children: type: array description: |- A summary of the space's children. Rooms which the requesting server cannot peek/join will be excluded. items: allOf: - $ref: ../client-server/definitions/public_rooms_chunk.yaml - type: object title: SpaceHierarchyChildRoomsChunk properties: room_type: type: string description: The `type` of room (from [`m.room.create`](/client-server-api/#mroomcreate)), if any. allowed_room_ids: type: array items: type: string description: |- If the room is a [restricted room](/server-server-api/#restricted-rooms), these are the room IDs which are specified by the join rules. Empty or omitted otherwise. inaccessible_children: type: array items: type: string description: |- The list of room IDs the requesting server doesn't have a viable way to peek/join. Rooms which the responding server cannot provide details on will be outright excluded from the response instead. Assuming both the requesting and responding server are well behaved, the requesting server should consider these room IDs as not accessible from anywhere. They should not be re-requested. required: - room - children - inaccessible_children examples: response: value: { "room": { "room_id": "!space:example.org", "avatar_url": "mxc://example.org/abcdef", "guest_can_join": false, "name": "The First Space", "topic": "No other spaces were created first, ever", "world_readable": true, "join_rule": "public", "room_type": "m.space", "num_joined_members": 42, "canonical_alias": "#general:example.org", "allowed_room_ids": [], "children_state": [ { "type": "m.space.child", "state_key": "!a:example.org", "content": { "via": [ "remote.example.org" ] }, "sender": "@alice:example.org", "origin_server_ts": 1629413349153 } ] }, "inaccessible_children": [ "!secret:example.org" ], "children": [ { "room_id": "!second_room:example.org", "avatar_url": "mxc://example.org/abcdef2", "guest_can_join": false, "name": "The ~~First~~ Second Space", "topic": "Hello world", "world_readable": true, "join_rule": "restricted", "room_type": "m.space", "num_joined_members": 42, "canonical_alias": "#general:example.org", "allowed_room_ids": [ "!upstream:example.org" ], "children_state": [ { "type": "m.space.child", "state_key": "!b:example.org", "content": { "via": [ "remote.example.org" ] }, "sender": "@alice:example.org", "origin_server_ts": 1629422222222 } ] } ] } "404": description: |- The room is not known to the server or the requesting server is unable to peek/join it (if it were to attempt this). content: application/json: schema: $ref: ../client-server/definitions/errors/error.yaml examples: response: value: { "errcode": "M_NOT_FOUND", "error": "Room does not exist." } tags: - Spaces servers: - url: "{protocol}://{hostname}{basePath}" variables: protocol: enum: - http - https default: https hostname: default: localhost:8448 basePath: default: /_matrix/federation/v1 components: securitySchemes: signedRequest: $ref: definitions/security.yaml#/signedRequest