Files
matrix-js-sdk/src/@types/event.ts
T
Eric Eastwood b64dbdce74 Timeline needs to refresh when we see a MSC2716 marker event (#2299)
Inform the client that historical messages were imported in the timeline and they should refresh the timeline in order to see the new events.

Companion `matrix-react-sdk` PR: https://github.com/matrix-org/matrix-react-sdk/pull/8354

The `marker` events are being used as state now because this way they can't be lost in a timeline gap. Regardless of when they were sent, we will still have the latest version of the state to compare against. Any time we see our latest state value change for marker events, prompt the user that the timeline needs to refresh.

> In a [sync meeting with @ara4n](https://docs.google.com/document/d/1KCEmpnGr4J-I8EeaVQ8QJZKBDu53ViI7V62y5BzfXr0/edit#bookmark=id.67nio1ka8znc), we came up with the idea to make the `marker` events as state events. When the client sees that the `m.room.marker` state changed to a different event ID, it can throw away all of the timeline and re-fetch as needed.
>
> For homeservers where the [same problem](https://github.com/matrix-org/matrix-doc/pull/2716#discussion_r782499674) can happen, we probably don't want to throw away the whole timeline but it can go up the `unsigned.replaces_state` chain of the `m.room.marker` state events to get them all.
>
> In terms of state performance, there could be thousands of `marker` events in a room but it's no different than room members joining and leaving over and over like an IRC room.
>
> *-- https://github.com/matrix-org/matrix-spec-proposals/pull/2716#discussion_r782629097*


### Why are we just setting `timlineNeedsRefresh` (and [prompting the user](https://github.com/matrix-org/matrix-react-sdk/pull/8354)) instead of automatically refreshing the timeline for the user?

If we refreshed the timeline automatically, someone could cause your Element client to constantly refresh the timeline by just sending marker events over and over. Granted, you probably want to leave a room like this 🤷. Perhaps also some sort of DOS vector since everyone will be refreshing and hitting the server at the exact same time.

In order to avoid the timeline maybe going blank during the refresh, we could re-fetch the new events first, then replace the timeline. But the points above still stand on why we shouldn't.
2022-06-01 16:31:20 -05:00

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TypeScript

/*
Copyright 2020 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.
*/
import { UnstableValue } from "../NamespacedValue";
export enum EventType {
// Room state events
RoomCanonicalAlias = "m.room.canonical_alias",
RoomCreate = "m.room.create",
RoomJoinRules = "m.room.join_rules",
RoomMember = "m.room.member",
RoomThirdPartyInvite = "m.room.third_party_invite",
RoomPowerLevels = "m.room.power_levels",
RoomName = "m.room.name",
RoomTopic = "m.room.topic",
RoomAvatar = "m.room.avatar",
RoomPinnedEvents = "m.room.pinned_events",
RoomEncryption = "m.room.encryption",
RoomHistoryVisibility = "m.room.history_visibility",
RoomGuestAccess = "m.room.guest_access",
RoomServerAcl = "m.room.server_acl",
RoomTombstone = "m.room.tombstone",
/**
* @deprecated Should not be used.
*/
RoomAliases = "m.room.aliases", // deprecated https://matrix.org/docs/spec/client_server/r0.6.1#historical-events
SpaceChild = "m.space.child",
SpaceParent = "m.space.parent",
// Room timeline events
RoomRedaction = "m.room.redaction",
RoomMessage = "m.room.message",
RoomMessageEncrypted = "m.room.encrypted",
Sticker = "m.sticker",
CallInvite = "m.call.invite",
CallCandidates = "m.call.candidates",
CallAnswer = "m.call.answer",
CallHangup = "m.call.hangup",
CallReject = "m.call.reject",
CallSelectAnswer = "m.call.select_answer",
CallNegotiate = "m.call.negotiate",
CallSDPStreamMetadataChanged = "m.call.sdp_stream_metadata_changed",
CallSDPStreamMetadataChangedPrefix = "org.matrix.call.sdp_stream_metadata_changed",
CallReplaces = "m.call.replaces",
CallAssertedIdentity = "m.call.asserted_identity",
CallAssertedIdentityPrefix = "org.matrix.call.asserted_identity",
KeyVerificationRequest = "m.key.verification.request",
KeyVerificationStart = "m.key.verification.start",
KeyVerificationCancel = "m.key.verification.cancel",
KeyVerificationMac = "m.key.verification.mac",
KeyVerificationDone = "m.key.verification.done",
// use of this is discouraged https://matrix.org/docs/spec/client_server/r0.6.1#m-room-message-feedback
RoomMessageFeedback = "m.room.message.feedback",
Reaction = "m.reaction",
// Room ephemeral events
Typing = "m.typing",
Receipt = "m.receipt",
Presence = "m.presence",
// Room account_data events
FullyRead = "m.fully_read",
Tag = "m.tag",
SpaceOrder = "org.matrix.msc3230.space_order", // MSC3230
// User account_data events
PushRules = "m.push_rules",
Direct = "m.direct",
IgnoredUserList = "m.ignored_user_list",
// to_device events
RoomKey = "m.room_key",
RoomKeyRequest = "m.room_key_request",
ForwardedRoomKey = "m.forwarded_room_key",
Dummy = "m.dummy",
}
export enum RelationType {
Annotation = "m.annotation",
Replace = "m.replace",
Reference = "m.reference",
Thread = "m.thread",
}
export enum MsgType {
Text = "m.text",
Emote = "m.emote",
Notice = "m.notice",
Image = "m.image",
File = "m.file",
Audio = "m.audio",
Location = "m.location",
Video = "m.video",
KeyVerificationRequest = "m.key.verification.request",
}
export const RoomCreateTypeField = "type";
export enum RoomType {
Space = "m.space",
UnstableCall = "org.matrix.msc3417.call",
ElementVideo = "io.element.video",
}
/**
* Identifier for an [MSC3088](https://github.com/matrix-org/matrix-doc/pull/3088)
* room purpose. Note that this reference is UNSTABLE and subject to breaking changes,
* including its eventual removal.
*/
export const UNSTABLE_MSC3088_PURPOSE = new UnstableValue("m.room.purpose", "org.matrix.msc3088.purpose");
/**
* Enabled flag for an [MSC3088](https://github.com/matrix-org/matrix-doc/pull/3088)
* room purpose. Note that this reference is UNSTABLE and subject to breaking changes,
* including its eventual removal.
*/
export const UNSTABLE_MSC3088_ENABLED = new UnstableValue("m.enabled", "org.matrix.msc3088.enabled");
/**
* Subtype for an [MSC3089](https://github.com/matrix-org/matrix-doc/pull/3089) space-room.
* Note that this reference is UNSTABLE and subject to breaking changes, including its
* eventual removal.
*/
export const UNSTABLE_MSC3089_TREE_SUBTYPE = new UnstableValue("m.data_tree", "org.matrix.msc3089.data_tree");
/**
* Leaf type for an event in a [MSC3089](https://github.com/matrix-org/matrix-doc/pull/3089) space-room.
* Note that this reference is UNSTABLE and subject to breaking changes, including its
* eventual removal.
*/
export const UNSTABLE_MSC3089_LEAF = new UnstableValue("m.leaf", "org.matrix.msc3089.leaf");
/**
* Branch (Leaf Reference) type for the index approach in a
* [MSC3089](https://github.com/matrix-org/matrix-doc/pull/3089) space-room. Note that this reference is
* UNSTABLE and subject to breaking changes, including its eventual removal.
*/
export const UNSTABLE_MSC3089_BRANCH = new UnstableValue("m.branch", "org.matrix.msc3089.branch");
/**
* Marker event type to point back at imported historical content in a room. See
* [MSC2716](https://github.com/matrix-org/matrix-spec-proposals/pull/2716).
* Note that this reference is UNSTABLE and subject to breaking changes,
* including its eventual removal.
*/
export const UNSTABLE_MSC2716_MARKER = new UnstableValue("m.room.marker", "org.matrix.msc2716.marker");
/**
* Functional members type for declaring a purpose of room members (e.g. helpful bots).
* Note that this reference is UNSTABLE and subject to breaking changes, including its
* eventual removal.
*
* Schema (TypeScript):
* {
* service_members?: string[]
* }
*
* Example:
* {
* "service_members": [
* "@helperbot:localhost",
* "@reminderbot:alice.tdl"
* ]
* }
*/
export const UNSTABLE_ELEMENT_FUNCTIONAL_USERS = new UnstableValue(
"io.element.functional_members",
"io.element.functional_members");
/**
* A type of message that affects visibility of a message,
* as per https://github.com/matrix-org/matrix-doc/pull/3531
*
* @experimental
*/
export const EVENT_VISIBILITY_CHANGE_TYPE = new UnstableValue(
"m.visibility",
"org.matrix.msc3531.visibility");
export interface IEncryptedFile {
url: string;
mimetype?: string;
key: {
alg: string;
key_ops: string[]; // eslint-disable-line camelcase
kty: string;
k: string;
ext: boolean;
};
iv: string;
hashes: {[alg: string]: string};
v: string;
}