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fix ll events being duplicated in the timeline preventing name changes

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This commit is contained in:
Bruno Windels 2021-03-05 20:10:57 +01:00
parent b37a586094
commit cfb521ef10
1 changed files with 29 additions and 6 deletions
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35
src/matrix/room/timeline/persistence/MemberWriter.js
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@ -56,10 +56,20 @@ export class MemberWriter {
if (!existingMember || !existingMember.equals(member)) {
txn.roomMembers.set(member.serialize());
this._cache.set(member);
if (!isLazyLoadingMember) {
return new MemberChange(member, existingMember?.membership);
// we also return a member change for lazy loading members if something changed,
// so when the dupe timeline event comes and it doesn't see a diff
// with the cache, we already returned the event here.
//
// it's just important that we don't consider the first LL event
// for a user we see as a membership change, or we'll share keys with
// them, etc...
if (isLazyLoadingMember && !existingMember) {
// we don't have a previous member, but we know this is not a
// membership change as it's a lazy loaded
// member so take the membership from the member
return new MemberChange(member, member.membership);
}
return new MemberChange(member, existingMember?.membership);
}
}
@ -191,13 +201,26 @@ export function tests() {
assert(!change.hasLeft);
assert(!change.hasJoined);
},
"lazy loaded member is written but no change returned": async assert => {
"lazy loaded member we already know about doens't return change": async assert => {
const writer = new MemberWriter(roomId);
const txn = createStorage([member("join", alice, "Alice")]);
const change = await writer.writeStateMemberEvent(createMemberEvent("join", alice, "Alice"), false, txn);
assert(!change);
},
"lazy loaded member we already know about changes display name": async assert => {
const writer = new MemberWriter(roomId);
const txn = createStorage([member("join", alice, "Alice")]);
const change = await writer.writeStateMemberEvent(createMemberEvent("join", alice, "Alies"), false, txn);
assert.equal(change.member.displayName, "Alies");
},
"unknown lazy loaded member returns change, but not considered a membership change": async assert => {
const writer = new MemberWriter(roomId);
const txn = createStorage();
const change = await writer.writeStateMemberEvent(createMemberEvent("join", alice, "Alice"), false, txn);
assert(!change);
assert(!change.hasJoined);
assert(!change.hasLeft);
assert.equal(change.member.membership, "join");
assert.equal(txn.members.get(alice).displayName, "Alice");
},
};
}