regression(federation): DM detection in createDirectMessage #37582
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WalkthroughDirect-message creation now infers federation by inspecting participant IDs and conditionally passes Changes
Sequence Diagram(s)sequenceDiagram
participant Client as Caller
participant Method as createDirectMessage
participant RoomSvc as createRoom
Note over Client,Method: DM creation request with participant IDs
Client->>Method: call createDirectMessage(participantIds)
Method->>Method: compute hasFederatedMembers (detect Matrix-style IDs)
alt hasFederatedMembers == true
Method->>RoomSvc: createRoom(..., extraData: {...}, federated: true)
else
Method->>RoomSvc: createRoom(..., extraData: {...})
end
RoomSvc-->>Method: return created room / error
Method-->>Client: return result
Estimated code review effort🎯 3 (Moderate) | ⏱️ ~20 minutes
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🧠 Learnings (17)📓 Common learnings📚 Learning: 2025-10-28T16:53:42.761ZApplied to files:
📚 Learning: 2025-11-24T17:08:17.065ZApplied to files:
📚 Learning: 2025-11-24T17:08:17.065ZApplied to files:
📚 Learning: 2025-11-24T17:08:17.065ZApplied to files:
📚 Learning: 2025-11-24T17:08:17.065ZApplied to files:
📚 Learning: 2025-11-04T16:49:19.107ZApplied to files:
📚 Learning: 2025-11-24T17:08:17.065ZApplied to files:
📚 Learning: 2025-09-19T15:15:04.642ZApplied to files:
📚 Learning: 2025-11-24T17:08:17.065ZApplied to files:
📚 Learning: 2025-09-25T09:59:26.461ZApplied to files:
📚 Learning: 2025-11-19T18:20:37.116ZApplied to files:
📚 Learning: 2025-09-16T13:33:49.237ZApplied to files:
📚 Learning: 2025-09-25T09:59:26.461ZApplied to files:
📚 Learning: 2025-09-25T09:59:26.461ZApplied to files:
📚 Learning: 2025-11-24T17:08:17.065ZApplied to files:
📚 Learning: 2025-11-05T21:04:35.787ZApplied to files:
🧬 Code graph analysis (1)ee/packages/federation-matrix/tests/end-to-end/room.spec.ts (3)
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🔇 Additional comments (4)
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🧹 Nitpick comments (1)
apps/meteor/app/lib/server/functions/createRoom.ts (1)
147-147: Correct fix: three-state logic now allows undefined.The change from
!== trueto=== falsecorrectly narrows the guard to block only when federation is explicitly disabled (false), while allowingundefined(unspecified) to pass through. This restores the intended behavior for federated DMs and room creation where callers don't always set the flag.The strict equality check is appropriate and type-safe for the boolean field.
Consider adding a brief comment to document the three-state semantics for future maintainers:
// Prevent adding federated users to rooms that are not marked as federated explicitly + // federated can be: true (explicit federated), false (explicit non-federated), undefined (unspecified, will auto-federate if needed) if (hasFederatedMembers && optionalExtraData.federated === false) {
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📒 Files selected for processing (1)
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🧰 Additional context used
🧠 Learnings (7)
📓 Common learnings
Learnt from: ricardogarim
Repo: RocketChat/Rocket.Chat PR: 37377
File: apps/meteor/ee/server/hooks/federation/index.ts:86-88
Timestamp: 2025-11-04T16:49:19.107Z
Learning: In Rocket.Chat's federation system (apps/meteor/ee/server/hooks/federation/), permission checks follow two distinct patterns: (1) User-initiated federation actions (creating rooms, adding users to federated rooms, joining from invites) should throw MeteorError to inform users they lack 'access-federation' permission. (2) Remote server-initiated federation events should silently skip/ignore when users lack permission. The beforeAddUserToRoom hook only executes for local user-initiated actions, so throwing an error there is correct. Remote federation events are handled separately by the federation Matrix package with silent skipping logic.
Learnt from: ricardogarim
Repo: RocketChat/Rocket.Chat PR: 37205
File: ee/packages/federation-matrix/src/FederationMatrix.ts:296-301
Timestamp: 2025-10-28T16:53:42.761Z
Learning: In the Rocket.Chat federation-matrix integration (ee/packages/federation-matrix/), the createRoom method from rocket.chat/federation-sdk will support a 4-argument signature (userId, roomName, visibility, displayName) in newer versions. Code using this 4-argument call is forward-compatible with planned library updates and should not be flagged as an error.
Learnt from: ricardogarim
Repo: RocketChat/Rocket.Chat PR: 37205
File: ee/packages/federation-matrix/src/FederationMatrix.ts:296-301
Timestamp: 2025-10-28T16:53:42.761Z
Learning: In the Rocket.Chat federation-matrix integration (ee/packages/federation-matrix/), the createRoom method from rocket.chat/federation-sdk will support a 4-argument signature (userId, roomName, visibility, displayName) in newer versions. Code using this 4-argument call is forward-compatible with planned library updates and should not be flagged as an error.
Learnt from: rodrigok
Repo: RocketChat/Rocket.Chat PR: 36991
File: apps/meteor/server/services/federation/infrastructure/rocket-chat/adapters/Settings.ts:219-221
Timestamp: 2025-09-19T15:15:04.642Z
Learning: The Federation_Matrix_homeserver_domain setting in apps/meteor/server/services/federation/infrastructure/rocket-chat/adapters/Settings.ts is part of the old federation system and is being deprecated/removed, so configuration issues with this setting should not be flagged for improvement.
Learnt from: Dnouv
Repo: RocketChat/Rocket.Chat PR: 37057
File: packages/apps-engine/src/definition/accessors/IUserRead.ts:23-27
Timestamp: 2025-09-25T09:59:26.461Z
Learning: AppUserBridge.getUserRoomIds in apps/meteor/app/apps/server/bridges/users.ts always returns an array of strings (mapping subscription documents to room IDs), never undefined, even when user has no room subscriptions.
Learnt from: Dnouv
Repo: RocketChat/Rocket.Chat PR: 37057
File: packages/apps-engine/src/definition/accessors/IUserRead.ts:23-27
Timestamp: 2025-09-25T09:59:26.461Z
Learning: AppUserBridge.getUserRoomIds in apps/meteor/app/apps/server/bridges/users.ts always returns an array of strings by mapping subscription documents to room IDs, never undefined, even when user has no room subscriptions.
Learnt from: Dnouv
Repo: RocketChat/Rocket.Chat PR: 37057
File: packages/apps-engine/src/definition/accessors/IUserRead.ts:23-27
Timestamp: 2025-09-25T09:59:26.461Z
Learning: UserBridge.doGetUserRoomIds in packages/apps-engine/src/server/bridges/UserBridge.ts has a bug where it implicitly returns undefined when the app lacks read permission (missing return statement in the else case of the permission check).
📚 Learning: 2025-11-04T16:49:19.107Z
Learnt from: ricardogarim
Repo: RocketChat/Rocket.Chat PR: 37377
File: apps/meteor/ee/server/hooks/federation/index.ts:86-88
Timestamp: 2025-11-04T16:49:19.107Z
Learning: In Rocket.Chat's federation system (apps/meteor/ee/server/hooks/federation/), permission checks follow two distinct patterns: (1) User-initiated federation actions (creating rooms, adding users to federated rooms, joining from invites) should throw MeteorError to inform users they lack 'access-federation' permission. (2) Remote server-initiated federation events should silently skip/ignore when users lack permission. The beforeAddUserToRoom hook only executes for local user-initiated actions, so throwing an error there is correct. Remote federation events are handled separately by the federation Matrix package with silent skipping logic.
Applied to files:
apps/meteor/app/lib/server/functions/createRoom.ts
📚 Learning: 2025-10-28T16:53:42.761Z
Learnt from: ricardogarim
Repo: RocketChat/Rocket.Chat PR: 37205
File: ee/packages/federation-matrix/src/FederationMatrix.ts:296-301
Timestamp: 2025-10-28T16:53:42.761Z
Learning: In the Rocket.Chat federation-matrix integration (ee/packages/federation-matrix/), the createRoom method from rocket.chat/federation-sdk will support a 4-argument signature (userId, roomName, visibility, displayName) in newer versions. Code using this 4-argument call is forward-compatible with planned library updates and should not be flagged as an error.
Applied to files:
apps/meteor/app/lib/server/functions/createRoom.ts
📚 Learning: 2025-09-25T09:59:26.461Z
Learnt from: Dnouv
Repo: RocketChat/Rocket.Chat PR: 37057
File: packages/apps-engine/src/definition/accessors/IUserRead.ts:23-27
Timestamp: 2025-09-25T09:59:26.461Z
Learning: AppUserBridge.getUserRoomIds in apps/meteor/app/apps/server/bridges/users.ts always returns an array of strings (mapping subscription documents to room IDs), never undefined, even when user has no room subscriptions.
Applied to files:
apps/meteor/app/lib/server/functions/createRoom.ts
📚 Learning: 2025-09-19T15:15:04.642Z
Learnt from: rodrigok
Repo: RocketChat/Rocket.Chat PR: 36991
File: apps/meteor/server/services/federation/infrastructure/rocket-chat/adapters/Settings.ts:219-221
Timestamp: 2025-09-19T15:15:04.642Z
Learning: The Federation_Matrix_homeserver_domain setting in apps/meteor/server/services/federation/infrastructure/rocket-chat/adapters/Settings.ts is part of the old federation system and is being deprecated/removed, so configuration issues with this setting should not be flagged for improvement.
Applied to files:
apps/meteor/app/lib/server/functions/createRoom.ts
📚 Learning: 2025-09-25T09:59:26.461Z
Learnt from: Dnouv
Repo: RocketChat/Rocket.Chat PR: 37057
File: packages/apps-engine/src/definition/accessors/IUserRead.ts:23-27
Timestamp: 2025-09-25T09:59:26.461Z
Learning: AppUserBridge.getUserRoomIds in apps/meteor/app/apps/server/bridges/users.ts always returns an array of strings by mapping subscription documents to room IDs, never undefined, even when user has no room subscriptions.
Applied to files:
apps/meteor/app/lib/server/functions/createRoom.ts
📚 Learning: 2025-09-25T09:59:26.461Z
Learnt from: Dnouv
Repo: RocketChat/Rocket.Chat PR: 37057
File: packages/apps-engine/src/definition/accessors/IUserRead.ts:23-27
Timestamp: 2025-09-25T09:59:26.461Z
Learning: UserBridge.doGetUserRoomIds in packages/apps-engine/src/server/bridges/UserBridge.ts has a bug where it implicitly returns undefined when the app lacks read permission (missing return statement in the else case of the permission check).
Applied to files:
apps/meteor/app/lib/server/functions/createRoom.ts
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🔇 Additional comments (2)
apps/meteor/app/lib/server/functions/createRoom.ts (2)
139-144: LGTM: Federated member detection is correct.The logic properly identifies federated users by checking for the
:and@pattern in usernames, handling both string arrays and IUser objects.
153-162: LGTM: Fallback logic correctly handles undefined case.The federation setup properly auto-federates rooms when
hasFederatedMembersis true or whenfederatedis explicitly set to true. This works correctly with the narrowed guard at line 147, ensuring that rooms with federated members are automatically marked as federated when the flag is undefined.
sampaiodiego
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I tested this change and it is still not working 🤔
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📦 Docker Image Size Report📈 Changes
📊 Historical Trend---
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title "Image Size Evolution by Service (Last 30 Days + This PR)"
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Statistics (last 8 days):
ℹ️ About this reportThis report compares Docker image sizes from this build against the
Updated: Thu, 27 Nov 2025 20:07:09 GMT |
Codecov Report❌ Patch coverage is Additional details and impacted files@@ Coverage Diff @@
## develop #37582 +/- ##
========================================
Coverage 68.83% 68.83%
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Files 3361 3361
Lines 114340 114292 -48
Branches 20619 20636 +17
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+ Misses 33536 33524 -12
+ Partials 2098 2094 -4
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could you add extra tests for dm creation? just a simple regular case to avoid regressions |
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🧹 Nitpick comments (1)
apps/meteor/server/methods/createDirectMessage.ts (1)
98-99: Prefer explicit ternary when conditionally spreadingfederatedto keep TS happy and intent clearThe conditional spread here is fine at runtime, but
hasFederatedMembers && { federated: true }has type{ federated: true } | false. Depending on the TS config/version, spreading a union that includesfalsecan trigger “spread types may only be created from object types” and is slightly harder to read.You can keep the same behavior with a small tweak:
- { - ...(hasFederatedMembers && { federated: true }), - }, + { + ...(hasFederatedMembers ? { federated: true } : {}), + },This preserves the semantics (only adds
federated: truewhen needed) while staying strictly object‑typed for the spread target.
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📒 Files selected for processing (2)
apps/meteor/app/lib/server/functions/createRoom.ts(1 hunks)apps/meteor/server/methods/createDirectMessage.ts(2 hunks)
✅ Files skipped from review due to trivial changes (1)
- apps/meteor/app/lib/server/functions/createRoom.ts
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Files:
apps/meteor/server/methods/createDirectMessage.ts
🧠 Learnings (8)
📓 Common learnings
Learnt from: ricardogarim
Repo: RocketChat/Rocket.Chat PR: 37377
File: apps/meteor/ee/server/hooks/federation/index.ts:86-88
Timestamp: 2025-11-04T16:49:19.107Z
Learning: In Rocket.Chat's federation system (apps/meteor/ee/server/hooks/federation/), permission checks follow two distinct patterns: (1) User-initiated federation actions (creating rooms, adding users to federated rooms, joining from invites) should throw MeteorError to inform users they lack 'access-federation' permission. (2) Remote server-initiated federation events should silently skip/ignore when users lack permission. The beforeAddUserToRoom hook only executes for local user-initiated actions, so throwing an error there is correct. Remote federation events are handled separately by the federation Matrix package with silent skipping logic.
Learnt from: ricardogarim
Repo: RocketChat/Rocket.Chat PR: 37205
File: ee/packages/federation-matrix/src/FederationMatrix.ts:296-301
Timestamp: 2025-10-28T16:53:42.761Z
Learning: In the Rocket.Chat federation-matrix integration (ee/packages/federation-matrix/), the createRoom method from rocket.chat/federation-sdk will support a 4-argument signature (userId, roomName, visibility, displayName) in newer versions. Code using this 4-argument call is forward-compatible with planned library updates and should not be flagged as an error.
Learnt from: ricardogarim
Repo: RocketChat/Rocket.Chat PR: 37205
File: ee/packages/federation-matrix/src/FederationMatrix.ts:296-301
Timestamp: 2025-10-28T16:53:42.761Z
Learning: In the Rocket.Chat federation-matrix integration (ee/packages/federation-matrix/), the createRoom method from rocket.chat/federation-sdk will support a 4-argument signature (userId, roomName, visibility, displayName) in newer versions. Code using this 4-argument call is forward-compatible with planned library updates and should not be flagged as an error.
Learnt from: rodrigok
Repo: RocketChat/Rocket.Chat PR: 36991
File: apps/meteor/server/services/federation/infrastructure/rocket-chat/adapters/Settings.ts:219-221
Timestamp: 2025-09-19T15:15:04.642Z
Learning: The Federation_Matrix_homeserver_domain setting in apps/meteor/server/services/federation/infrastructure/rocket-chat/adapters/Settings.ts is part of the old federation system and is being deprecated/removed, so configuration issues with this setting should not be flagged for improvement.
Learnt from: gabriellsh
Repo: RocketChat/Rocket.Chat PR: 37419
File: apps/meteor/server/services/media-call/service.ts:141-141
Timestamp: 2025-11-19T18:20:37.116Z
Learning: In apps/meteor/server/services/media-call/service.ts, the sendHistoryMessage method should use call.caller.id or call.createdBy?.id as the message author, not call.transferredBy?.id. Even for transferred calls, the message should appear in the DM between the two users who are calling each other, not sent by the person who transferred the call.
Learnt from: sampaiodiego
Repo: RocketChat/Rocket.Chat PR: 37357
File: ee/packages/federation-matrix/src/setup.ts:103-120
Timestamp: 2025-11-05T21:04:35.787Z
Learning: In Rocket.Chat's federation-matrix setup (ee/packages/federation-matrix/src/setup.ts and apps/meteor/ee/server/startup/federation.ts), configureFederationMatrixSettings does not need to be called before setupFederationMatrix. The SDK's init() establishes infrastructure (database, event handlers, APIs) first, and the configuration can be applied later via settings watchers before actual federation events are processed. The config only matters when events actually occur, at which point all infrastructure is already configured.
📚 Learning: 2025-10-28T16:53:42.761Z
Learnt from: ricardogarim
Repo: RocketChat/Rocket.Chat PR: 37205
File: ee/packages/federation-matrix/src/FederationMatrix.ts:296-301
Timestamp: 2025-10-28T16:53:42.761Z
Learning: In the Rocket.Chat federation-matrix integration (ee/packages/federation-matrix/), the createRoom method from rocket.chat/federation-sdk will support a 4-argument signature (userId, roomName, visibility, displayName) in newer versions. Code using this 4-argument call is forward-compatible with planned library updates and should not be flagged as an error.
Applied to files:
apps/meteor/server/methods/createDirectMessage.ts
📚 Learning: 2025-11-04T16:49:19.107Z
Learnt from: ricardogarim
Repo: RocketChat/Rocket.Chat PR: 37377
File: apps/meteor/ee/server/hooks/federation/index.ts:86-88
Timestamp: 2025-11-04T16:49:19.107Z
Learning: In Rocket.Chat's federation system (apps/meteor/ee/server/hooks/federation/), permission checks follow two distinct patterns: (1) User-initiated federation actions (creating rooms, adding users to federated rooms, joining from invites) should throw MeteorError to inform users they lack 'access-federation' permission. (2) Remote server-initiated federation events should silently skip/ignore when users lack permission. The beforeAddUserToRoom hook only executes for local user-initiated actions, so throwing an error there is correct. Remote federation events are handled separately by the federation Matrix package with silent skipping logic.
Applied to files:
apps/meteor/server/methods/createDirectMessage.ts
📚 Learning: 2025-09-19T15:15:04.642Z
Learnt from: rodrigok
Repo: RocketChat/Rocket.Chat PR: 36991
File: apps/meteor/server/services/federation/infrastructure/rocket-chat/adapters/Settings.ts:219-221
Timestamp: 2025-09-19T15:15:04.642Z
Learning: The Federation_Matrix_homeserver_domain setting in apps/meteor/server/services/federation/infrastructure/rocket-chat/adapters/Settings.ts is part of the old federation system and is being deprecated/removed, so configuration issues with this setting should not be flagged for improvement.
Applied to files:
apps/meteor/server/methods/createDirectMessage.ts
📚 Learning: 2025-11-05T21:04:35.787Z
Learnt from: sampaiodiego
Repo: RocketChat/Rocket.Chat PR: 37357
File: ee/packages/federation-matrix/src/setup.ts:103-120
Timestamp: 2025-11-05T21:04:35.787Z
Learning: In Rocket.Chat's federation-matrix setup (ee/packages/federation-matrix/src/setup.ts and apps/meteor/ee/server/startup/federation.ts), configureFederationMatrixSettings does not need to be called before setupFederationMatrix. The SDK's init() establishes infrastructure (database, event handlers, APIs) first, and the configuration can be applied later via settings watchers before actual federation events are processed. The config only matters when events actually occur, at which point all infrastructure is already configured.
Applied to files:
apps/meteor/server/methods/createDirectMessage.ts
📚 Learning: 2025-11-19T18:20:37.116Z
Learnt from: gabriellsh
Repo: RocketChat/Rocket.Chat PR: 37419
File: apps/meteor/server/services/media-call/service.ts:141-141
Timestamp: 2025-11-19T18:20:37.116Z
Learning: In apps/meteor/server/services/media-call/service.ts, the sendHistoryMessage method should use call.caller.id or call.createdBy?.id as the message author, not call.transferredBy?.id. Even for transferred calls, the message should appear in the DM between the two users who are calling each other, not sent by the person who transferred the call.
Applied to files:
apps/meteor/server/methods/createDirectMessage.ts
📚 Learning: 2025-09-16T13:33:49.237Z
Learnt from: cardoso
Repo: RocketChat/Rocket.Chat PR: 36890
File: apps/meteor/tests/e2e/e2e-encryption/e2ee-otr.spec.ts:21-26
Timestamp: 2025-09-16T13:33:49.237Z
Learning: The im.delete API endpoint accepts either a `roomId` parameter (requiring the actual DM room _id) or a `username` parameter (for the DM partner's username). Constructing slug-like identifiers like `user2${Users.userE2EE.data.username}` doesn't work for this endpoint.
Applied to files:
apps/meteor/server/methods/createDirectMessage.ts
📚 Learning: 2025-09-16T13:33:49.237Z
Learnt from: cardoso
Repo: RocketChat/Rocket.Chat PR: 36890
File: apps/meteor/tests/e2e/e2e-encryption/e2ee-otr.spec.ts:21-26
Timestamp: 2025-09-16T13:33:49.237Z
Learning: In Rocket.Chat test files, the im.delete API endpoint accepts either a `roomId` parameter (requiring the actual DM room _id) or a `username` parameter (for the DM partner's username). It does not accept slug-like constructions such as concatenating usernames together.
Applied to files:
apps/meteor/server/methods/createDirectMessage.ts
🔇 Additional comments (1)
apps/meteor/server/methods/createDirectMessage.ts (1)
46-49: Based on my verification, I've found the following:
- Code duplication confirmed: Both
createRoom.ts(lines 153-157) andcreateDirectMessage.ts(lines 49) have identical TODO comments and almost identicalhasFederatedMembersdetection logic- Incomplete federation detection:
createDirectMessage.tsonly checks string entries for Matrix ID pattern (member.includes(':') && member.includes('@')), whilecreateRoom.tschecks both string andIUser.usernamecases. This means federated users represented asIUserobjects won't be detected- Unused callback: The
'federation.beforeCreateDirectMessage'callback is defined but has no registered implementation- Type mismatches:
roomUserscan beIUser | string[]but is cast toIUser[]when passed tocreateRoom, and the callback signature expectsIUser[]- Comment guideline violation: The 3-line explanatory comment violates the coding guideline to avoid comments in implementation
Here is the rewritten review comment:
Extract federation detection into shared helper; current logic duplicates createRoom and is incomplete
The heuristic for detecting federated DM members is duplicated from
createRoom.ts(lines 153-157), which already has the same TODO. More critically, this implementation is incomplete: it only checks string entries for the Matrix ID pattern (@user:server), missing the case where federated users arrive asIUserobjects with federation metadata in theirusernamefield.Compare the two:
- createDirectMessage.ts line 49: checks only
typeof user === 'string' && user.includes(':') && user.includes('@')- createRoom.ts lines 154-157: checks both string and
member.username?.includes(':') && member.username?.includes('@')The type mismatch reinforces this:
roomUsersis a mix ofIUserand possibly strings, but gets cast toIUser[]and passed tocreateRoom. If federated users ever arrive asIUserobjects here (unlikely in current flow but possible in future federation enhancements), they'll be treated as non-federated.Extract a shared helper (e.g.,
isFederatedParticipant(user: IUser | string): boolean) to ensure both code paths stay in sync. As a secondary concern, remove the 3-line block comment (lines 46–48) once the helper name is self-documenting; this aligns with the coding guideline to avoid explanatory comments in implementation.⛔ Skipped due to learnings
Learnt from: ricardogarim Repo: RocketChat/Rocket.Chat PR: 37205 File: ee/packages/federation-matrix/src/FederationMatrix.ts:296-301 Timestamp: 2025-10-28T16:53:42.761Z Learning: In the Rocket.Chat federation-matrix integration (ee/packages/federation-matrix/), the createRoom method from rocket.chat/federation-sdk will support a 4-argument signature (userId, roomName, visibility, displayName) in newer versions. Code using this 4-argument call is forward-compatible with planned library updates and should not be flagged as an error.Learnt from: ricardogarim Repo: RocketChat/Rocket.Chat PR: 37205 File: ee/packages/federation-matrix/src/FederationMatrix.ts:296-301 Timestamp: 2025-10-28T16:53:42.761Z Learning: In the Rocket.Chat federation-matrix integration (ee/packages/federation-matrix/), the createRoom method from rocket.chat/federation-sdk will support a 4-argument signature (userId, roomName, visibility, displayName) in newer versions. Code using this 4-argument call is forward-compatible with planned library updates and should not be flagged as an error.Learnt from: ricardogarim Repo: RocketChat/Rocket.Chat PR: 37377 File: apps/meteor/ee/server/hooks/federation/index.ts:86-88 Timestamp: 2025-11-04T16:49:19.107Z Learning: In Rocket.Chat's federation system (apps/meteor/ee/server/hooks/federation/), permission checks follow two distinct patterns: (1) User-initiated federation actions (creating rooms, adding users to federated rooms, joining from invites) should throw MeteorError to inform users they lack 'access-federation' permission. (2) Remote server-initiated federation events should silently skip/ignore when users lack permission. The beforeAddUserToRoom hook only executes for local user-initiated actions, so throwing an error there is correct. Remote federation events are handled separately by the federation Matrix package with silent skipping logic.Learnt from: MartinSchoeler Repo: RocketChat/Rocket.Chat PR: 37408 File: apps/meteor/client/views/admin/ABAC/useRoomAttributeOptions.tsx:53-69 Timestamp: 2025-11-10T19:06:20.146Z Learning: In the Rocket.Chat repository, do not provide suggestions or recommendations about code sections marked with TODO comments. The maintainers have already identified these as future work and external reviewers lack the full context about implementation plans and timing.
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📒 Files selected for processing (1)
ee/packages/federation-matrix/tests/end-to-end/room.spec.ts(4 hunks)
🧰 Additional context used
📓 Path-based instructions (2)
**/*.{ts,tsx,js}
📄 CodeRabbit inference engine (.cursor/rules/playwright.mdc)
**/*.{ts,tsx,js}: Write concise, technical TypeScript/JavaScript with accurate typing in Playwright tests
Avoid code comments in the implementation
Files:
ee/packages/federation-matrix/tests/end-to-end/room.spec.ts
**/*.spec.ts
📄 CodeRabbit inference engine (.cursor/rules/playwright.mdc)
**/*.spec.ts: Use descriptive test names that clearly communicate expected behavior in Playwright tests
Use.spec.tsextension for test files (e.g.,login.spec.ts)
Files:
ee/packages/federation-matrix/tests/end-to-end/room.spec.ts
🧠 Learnings (14)
📓 Common learnings
Learnt from: ricardogarim
Repo: RocketChat/Rocket.Chat PR: 37377
File: apps/meteor/ee/server/hooks/federation/index.ts:86-88
Timestamp: 2025-11-04T16:49:19.107Z
Learning: In Rocket.Chat's federation system (apps/meteor/ee/server/hooks/federation/), permission checks follow two distinct patterns: (1) User-initiated federation actions (creating rooms, adding users to federated rooms, joining from invites) should throw MeteorError to inform users they lack 'access-federation' permission. (2) Remote server-initiated federation events should silently skip/ignore when users lack permission. The beforeAddUserToRoom hook only executes for local user-initiated actions, so throwing an error there is correct. Remote federation events are handled separately by the federation Matrix package with silent skipping logic.
Learnt from: ricardogarim
Repo: RocketChat/Rocket.Chat PR: 37205
File: ee/packages/federation-matrix/src/FederationMatrix.ts:296-301
Timestamp: 2025-10-28T16:53:42.761Z
Learning: In the Rocket.Chat federation-matrix integration (ee/packages/federation-matrix/), the createRoom method from rocket.chat/federation-sdk will support a 4-argument signature (userId, roomName, visibility, displayName) in newer versions. Code using this 4-argument call is forward-compatible with planned library updates and should not be flagged as an error.
Learnt from: ricardogarim
Repo: RocketChat/Rocket.Chat PR: 37205
File: ee/packages/federation-matrix/src/FederationMatrix.ts:296-301
Timestamp: 2025-10-28T16:53:42.761Z
Learning: In the Rocket.Chat federation-matrix integration (ee/packages/federation-matrix/), the createRoom method from rocket.chat/federation-sdk will support a 4-argument signature (userId, roomName, visibility, displayName) in newer versions. Code using this 4-argument call is forward-compatible with planned library updates and should not be flagged as an error.
Learnt from: cardoso
Repo: RocketChat/Rocket.Chat PR: 36890
File: apps/meteor/tests/e2e/e2e-encryption/e2ee-otr.spec.ts:21-26
Timestamp: 2025-09-16T13:33:49.237Z
Learning: In Rocket.Chat test files, the im.delete API endpoint accepts either a `roomId` parameter (requiring the actual DM room _id) or a `username` parameter (for the DM partner's username). It does not accept slug-like constructions such as concatenating usernames together.
Learnt from: sampaiodiego
Repo: RocketChat/Rocket.Chat PR: 37357
File: ee/packages/federation-matrix/src/setup.ts:103-120
Timestamp: 2025-11-05T21:04:35.787Z
Learning: In Rocket.Chat's federation-matrix setup (ee/packages/federation-matrix/src/setup.ts and apps/meteor/ee/server/startup/federation.ts), configureFederationMatrixSettings does not need to be called before setupFederationMatrix. The SDK's init() establishes infrastructure (database, event handlers, APIs) first, and the configuration can be applied later via settings watchers before actual federation events are processed. The config only matters when events actually occur, at which point all infrastructure is already configured.
📚 Learning: 2025-10-28T16:53:42.761Z
Learnt from: ricardogarim
Repo: RocketChat/Rocket.Chat PR: 37205
File: ee/packages/federation-matrix/src/FederationMatrix.ts:296-301
Timestamp: 2025-10-28T16:53:42.761Z
Learning: In the Rocket.Chat federation-matrix integration (ee/packages/federation-matrix/), the createRoom method from rocket.chat/federation-sdk will support a 4-argument signature (userId, roomName, visibility, displayName) in newer versions. Code using this 4-argument call is forward-compatible with planned library updates and should not be flagged as an error.
Applied to files:
ee/packages/federation-matrix/tests/end-to-end/room.spec.ts
📚 Learning: 2025-11-04T16:49:19.107Z
Learnt from: ricardogarim
Repo: RocketChat/Rocket.Chat PR: 37377
File: apps/meteor/ee/server/hooks/federation/index.ts:86-88
Timestamp: 2025-11-04T16:49:19.107Z
Learning: In Rocket.Chat's federation system (apps/meteor/ee/server/hooks/federation/), permission checks follow two distinct patterns: (1) User-initiated federation actions (creating rooms, adding users to federated rooms, joining from invites) should throw MeteorError to inform users they lack 'access-federation' permission. (2) Remote server-initiated federation events should silently skip/ignore when users lack permission. The beforeAddUserToRoom hook only executes for local user-initiated actions, so throwing an error there is correct. Remote federation events are handled separately by the federation Matrix package with silent skipping logic.
Applied to files:
ee/packages/federation-matrix/tests/end-to-end/room.spec.ts
📚 Learning: 2025-11-24T17:08:17.065Z
Learnt from: CR
Repo: RocketChat/Rocket.Chat PR: 0
File: .cursor/rules/playwright.mdc:0-0
Timestamp: 2025-11-24T17:08:17.065Z
Learning: Applies to apps/meteor/tests/e2e/**/*.spec.ts : Group related tests in the same file
Applied to files:
ee/packages/federation-matrix/tests/end-to-end/room.spec.ts
📚 Learning: 2025-11-24T17:08:17.065Z
Learnt from: CR
Repo: RocketChat/Rocket.Chat PR: 0
File: .cursor/rules/playwright.mdc:0-0
Timestamp: 2025-11-24T17:08:17.065Z
Learning: Applies to apps/meteor/tests/e2e/**/*.spec.ts : All test files must be created in `apps/meteor/tests/e2e/` directory
Applied to files:
ee/packages/federation-matrix/tests/end-to-end/room.spec.ts
📚 Learning: 2025-11-24T17:08:17.065Z
Learnt from: CR
Repo: RocketChat/Rocket.Chat PR: 0
File: .cursor/rules/playwright.mdc:0-0
Timestamp: 2025-11-24T17:08:17.065Z
Learning: Applies to apps/meteor/tests/e2e/**/*.spec.ts : Utilize Playwright fixtures (`test`, `page`, `expect`) for consistency in test files
Applied to files:
ee/packages/federation-matrix/tests/end-to-end/room.spec.ts
📚 Learning: 2025-11-24T17:08:17.065Z
Learnt from: CR
Repo: RocketChat/Rocket.Chat PR: 0
File: .cursor/rules/playwright.mdc:0-0
Timestamp: 2025-11-24T17:08:17.065Z
Learning: Applies to apps/meteor/tests/e2e/**/*.spec.ts : Ensure tests run reliably in parallel without shared state conflicts
Applied to files:
ee/packages/federation-matrix/tests/end-to-end/room.spec.ts
📚 Learning: 2025-09-19T15:15:04.642Z
Learnt from: rodrigok
Repo: RocketChat/Rocket.Chat PR: 36991
File: apps/meteor/server/services/federation/infrastructure/rocket-chat/adapters/Settings.ts:219-221
Timestamp: 2025-09-19T15:15:04.642Z
Learning: The Federation_Matrix_homeserver_domain setting in apps/meteor/server/services/federation/infrastructure/rocket-chat/adapters/Settings.ts is part of the old federation system and is being deprecated/removed, so configuration issues with this setting should not be flagged for improvement.
Applied to files:
ee/packages/federation-matrix/tests/end-to-end/room.spec.ts
📚 Learning: 2025-11-24T17:08:17.065Z
Learnt from: CR
Repo: RocketChat/Rocket.Chat PR: 0
File: .cursor/rules/playwright.mdc:0-0
Timestamp: 2025-11-24T17:08:17.065Z
Learning: Applies to apps/meteor/tests/e2e/page-objects/**/*.ts : Utilize existing page objects pattern from `apps/meteor/tests/e2e/page-objects/`
Applied to files:
ee/packages/federation-matrix/tests/end-to-end/room.spec.ts
📚 Learning: 2025-09-16T13:33:49.237Z
Learnt from: cardoso
Repo: RocketChat/Rocket.Chat PR: 36890
File: apps/meteor/tests/e2e/e2e-encryption/e2ee-otr.spec.ts:21-26
Timestamp: 2025-09-16T13:33:49.237Z
Learning: In Rocket.Chat test files, the im.delete API endpoint accepts either a `roomId` parameter (requiring the actual DM room _id) or a `username` parameter (for the DM partner's username). It does not accept slug-like constructions such as concatenating usernames together.
Applied to files:
ee/packages/federation-matrix/tests/end-to-end/room.spec.ts
📚 Learning: 2025-09-25T09:59:26.461Z
Learnt from: Dnouv
Repo: RocketChat/Rocket.Chat PR: 37057
File: packages/apps-engine/src/definition/accessors/IUserRead.ts:23-27
Timestamp: 2025-09-25T09:59:26.461Z
Learning: AppUserBridge.getUserRoomIds in apps/meteor/app/apps/server/bridges/users.ts always returns an array of strings (mapping subscription documents to room IDs), never undefined, even when user has no room subscriptions.
Applied to files:
ee/packages/federation-matrix/tests/end-to-end/room.spec.ts
📚 Learning: 2025-09-25T09:59:26.461Z
Learnt from: Dnouv
Repo: RocketChat/Rocket.Chat PR: 37057
File: packages/apps-engine/src/definition/accessors/IUserRead.ts:23-27
Timestamp: 2025-09-25T09:59:26.461Z
Learning: AppUserBridge.getUserRoomIds in apps/meteor/app/apps/server/bridges/users.ts always returns an array of strings by mapping subscription documents to room IDs, never undefined, even when user has no room subscriptions.
Applied to files:
ee/packages/federation-matrix/tests/end-to-end/room.spec.ts
📚 Learning: 2025-11-24T17:08:17.065Z
Learnt from: CR
Repo: RocketChat/Rocket.Chat PR: 0
File: .cursor/rules/playwright.mdc:0-0
Timestamp: 2025-11-24T17:08:17.065Z
Learning: Applies to apps/meteor/tests/e2e/**/*.{ts,spec.ts} : Store commonly used locators in variables/constants for reuse
Applied to files:
ee/packages/federation-matrix/tests/end-to-end/room.spec.ts
📚 Learning: 2025-11-05T21:04:35.787Z
Learnt from: sampaiodiego
Repo: RocketChat/Rocket.Chat PR: 37357
File: ee/packages/federation-matrix/src/setup.ts:103-120
Timestamp: 2025-11-05T21:04:35.787Z
Learning: In Rocket.Chat's federation-matrix setup (ee/packages/federation-matrix/src/setup.ts and apps/meteor/ee/server/startup/federation.ts), configureFederationMatrixSettings does not need to be called before setupFederationMatrix. The SDK's init() establishes infrastructure (database, event handlers, APIs) first, and the configuration can be applied later via settings watchers before actual federation events are processed. The config only matters when events actually occur, at which point all infrastructure is already configured.
Applied to files:
ee/packages/federation-matrix/tests/end-to-end/room.spec.ts
🧬 Code graph analysis (1)
ee/packages/federation-matrix/tests/end-to-end/room.spec.ts (3)
apps/meteor/tests/data/users.helper.ts (4)
IRequestConfig(18-21)createUser(45-78)getRequestConfig(35-43)deleteUser(97-107)packages/core-typings/src/IUser.ts (1)
IUser(186-255)apps/meteor/tests/data/rooms.helper.ts (2)
createRoom(21-72)getRoomInfo(231-246)
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🔇 Additional comments (4)
ee/packages/federation-matrix/tests/end-to-end/room.spec.ts (4)
1-1: LGTM!The IUser type import is appropriate for typing the test user variable.
11-11: LGTM!The import additions are appropriate for the new DM test suite functionality.
21-22: LGTM!Explicit typing improves type safety and code clarity.
90-122: LGTM!The DM creation tests effectively validate the federation detection logic described in the PR objectives. Test names are descriptive and clearly communicate the expected behavior.
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Proposed changes (including videos or screenshots)
As per FB-82, this PR updates
createDirectMessageto properly detect whether a DM should be treated as federated. Previously, the function always passedfederated: falsewhen creating the room, which caused federated DMs to be misclassified and ultimately blocked by downstream federation checks.The new behavior inspects the participants:
@user:server), we infer that the DM is federated.This aligns with the existing pattern across the codebase, where callers determine whether a room should be federated before invoking
createRoom. Even though the federated-user checks are currently spread across multiple files, this matches the current architecture and restores correct behavior for federated DM creation.Use cases validated
Creating a DM from RC with a federated user
Input includes one Matrix user ID.
Result: DM is created with
federated: true.Creating a DM from RC with only local users
Participants are local users.
Result: DM is created without the prop
federated.A more cohesive approach (centralizing this logic in a single helper) can be addressed in a follow-up task under the Federation Jira board.
Summary by CodeRabbit
Bug Fixes
Tests
✏️ Tip: You can customize this high-level summary in your review settings.