[ECO-4985] Trigger the RETRY operation where spec says to
#120
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WalkthroughThe changes in this pull request involve significant updates to the Changes
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Actionable comments posted: 6
🧹 Outside diff range and nitpick comments (10)
Sources/AblyChat/Room.swift (1)
Line range hint
8-15: Consider implementing or removing unimplemented properties.Several properties (
presence,typing,occupancy) are marked as unimplemented and will triggerfatalError. This could lead to runtime crashes if these properties are accessed. Consider either:
- Implementing these properties
- Making them optional to avoid runtime crashes
- Removing them if they're not needed yet
Would you like me to propose a safer alternative implementation that avoids runtime crashes?
Sources/AblyChat/RoomLifecycleManager.swift (6)
48-48: Consistency in Method Naming and Protocol ConformanceThe method
onRoomStatusChange(bufferingPolicy:)is added to theRoomLifecycleManagerprotocol. Ensure this method is consistently implemented across all conforming types and that it aligns with the naming conventions used in the protocol.
91-91: Initialize Subscriptions with Proper Buffering PolicyThe
roomStatusChangeSubscriptionsarray is introduced without specifying the buffering policy for the subscriptions it will hold. Consider ensuring that all subscriptions added to this array have a consistent buffering policy to prevent unexpected behavior.
328-351: Conditional Compilation Code OrganizationThe
#if DEBUGblock contains several methods and properties related to testing. Ensure that these do not inadvertently affect the production code and that all test-only code is properly encapsulated.
361-367: Avoid Duplicate Emission of Status ChangesThe check for avoiding a double emission of room status changes is implemented. Ensure that this logic is thread-safe and consider documenting the reasoning to aid future developers.
730-735: Enumerate All Possible Operation KindsThe
OperationKindenum currently has a single case.retry. If more operation kinds are expected in the future, consider adding comments or placeholders to make extending the enum clearer.
Line range hint
322-367: Duplicate Code for Emitting Status ChangesThere appears to be duplicate logic for emitting status changes in both
changeStatus(to:)andemitRoomStatusChange(_:). Consolidate this logic to improve maintainability.Tests/AblyChatTests/DefaultRoomLifecycleManagerTests.swift (3)
Line range hint
1152-1157: RenameCHA_RL5d_JourneyToStateto conform to Swift naming conventionsThe enum name
CHA_RL5d_JourneyToStateis unusually long and includes specific test identifiers. According to Swift naming conventions, type names should be concise and descriptive. Consider renaming it to something likeContributorJourneyStatefor improved readability.
Line range hint
290-290: Address all TODO comments before mergingThere are several TODO comments left in the code at lines 290, 313, 427, and 679, indicating pending clarifications or incomplete implementations. Please resolve these TODOs and ensure all outstanding issues are addressed prior to merging the code.
Also applies to: 313-313, 427-427, 679-679
726-727: Improve variable naming for clarityIn line 727, the variable
asyncLetStatusChangescould be more descriptive. Consider renaming it tostatusChangesorcollectedStatusChangesto enhance readability.
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
📒 Files selected for processing (4)
Sources/AblyChat/Room.swift(1 hunks)Sources/AblyChat/RoomLifecycleManager.swift(9 hunks)Tests/AblyChatTests/DefaultRoomLifecycleManagerTests.swift(29 hunks)Tests/AblyChatTests/Mocks/MockRoomLifecycleManager.swift(1 hunks)
🧰 Additional context used
📓 Learnings (3)
Sources/AblyChat/Room.swift (1)
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#77
File: Sources/AblyChat/Room.swift:14-14
Timestamp: 2024-11-12T15:07:31.865Z
Learning: In the codebase, the term `status` now has a new meaning, and its usage is intentional.
Sources/AblyChat/RoomLifecycleManager.swift (3)
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#67
File: Sources/AblyChat/RoomLifecycleManager.swift:217-220
Timestamp: 2024-11-12T15:07:31.865Z
Learning: In `RoomLifecycleManager`, handling of missing `stateChange.reason` when `stateChange.resumed` is `false` is being tracked in issue #74. Future reviews should be aware of this planned work.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#85
File: Sources/AblyChat/RoomLifecycleManager.swift:140-191
Timestamp: 2024-11-12T15:07:31.865Z
Learning: In `Sources/AblyChat/RoomLifecycleManager.swift`, all cases of the `Status` enum are exhaustively handled in switch statements, so suggesting exhaustive handling is unnecessary.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#77
File: Sources/AblyChat/Room.swift:14-14
Timestamp: 2024-11-12T15:07:31.865Z
Learning: In the codebase, the term `status` now has a new meaning, and its usage is intentional.
Tests/AblyChatTests/DefaultRoomLifecycleManagerTests.swift (1)
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#54
File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:335-335
Timestamp: 2024-11-12T15:07:31.865Z
Learning: In Swift Testing, test method names do not need to start with `test`.
🔇 Additional comments (7)
Tests/AblyChatTests/Mocks/MockRoomLifecycleManager.swift (2)
Line range hint 47-51: LGTM! Method rename improves clarity
The rename from onChange to onRoomStatusChange better describes the method's purpose and maintains consistency with the protocol changes.
Line range hint 11-11: Consider implementing subscription cleanup
The TODO comment indicates a potential memory leak as subscriptions are only added but never cleaned up. This could impact test performance and memory usage over time.
Let's check if this issue is still open and if there are any related discussions:
Consider implementing one of these approaches:
- Add a cleanup method to remove completed/unnecessary subscriptions
- Implement weak references to allow automatic cleanup
- Add subscription lifecycle management tied to test lifecycle
✅ Verification successful
Let me gather more information about the subscription handling in the codebase to better understand the cleanup concerns.
Subscription cleanup is a known issue with an open tracking ticket
The review comment correctly identifies a legitimate concern. The evidence shows that:
- Issue Find a way to clean up arrays of subscriptions #36 is still open and actively tracking this problem
- There are unimplemented
unsubscribemethods in mock objects - A TODO comment in
Subscription.swiftexplicitly references this issue for implementing unsubscribe functionality - The
finish()method exists but may not fully address the cleanup needs
The architectural suggestions in the review are valid and align with the ongoing work tracked in issue #36. Since this is an acknowledged issue with an open ticket and partial implementation in progress, the review serves as a good reminder but doesn't require immediate action beyond the planned work.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Check the status of issue #36 and look for related discussions
# Check if issue #36 is still open
gh issue view 36
# Search for related discussions about subscription cleanup
rg -i "subscription.*cleanup|cleanup.*subscription" --type md
Length of output: 841
Script:
#!/bin/bash
# Search for subscription-related code and patterns
ast-grep --pattern 'var subscriptions'
# Look for any unsubscribe or cleanup methods
rg -i "unsubscribe|cleanup" --type swift -A 3
# Find files that might handle subscriptions
fd ".*Manager\.swift$" --exec grep -l "subscription"
Length of output: 2481
Sources/AblyChat/Room.swift (2)
Line range hint 14-14: Verify the planned status property rename.
There's a TODO comment about renaming the status property, and a learning note indicates that "status" has a new meaning in the codebase. Consider addressing this rename as part of the current changes to maintain consistency.
Let's check for other usages of this property:
177-177: LGTM! Verify consistent method naming across the codebase.
The rename from onChange to onRoomStatusChange improves clarity by being more specific about the type of change being observed.
Let's verify the consistency of this naming change across the codebase:
✅ Verification successful
Method naming is consistent across the codebase
The verification shows that the method naming is consistent throughout the codebase:
- The
Roomprotocol definesonStatusChangewhich returnsSubscription<RoomStatusChange> DefaultRoomimplements this by delegating tolifecycleManager.onRoomStatusChangeRoomLifecycleManagerconsistently usesonRoomStatusChangein its interface and implementation- All mock implementations (
MockRoom,MockRoomLifecycleManager) follow the same pattern
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Check for any remaining instances of the old method name and verify consistent usage of the new name
# Check for any remaining instances of 'onChange' that might need updating
echo "Checking for remaining 'onChange' instances..."
rg --type swift 'onChange.*Subscription<RoomStatusChange>' -l
# Verify consistent usage of 'onRoomStatusChange'
echo "Verifying 'onRoomStatusChange' usage..."
rg --type swift 'onRoomStatusChange.*Subscription<RoomStatusChange>' -l
Length of output: 4870
Script:
#!/bin/bash
# Let's try a different approach to verify the method naming consistency
# Check for any method declarations or usages related to room status changes
echo "Checking for status change related method declarations and usages..."
rg --type swift 'func (onChange|onRoomStatusChange|onStatusChange).*RoomStatusChange' -A 2 -B 2
# Also check for any Subscription<RoomStatusChange> related code
echo "Checking for RoomStatusChange subscription related code..."
rg --type swift 'Subscription<RoomStatusChange>' -A 2 -B 2
Length of output: 10782
Sources/AblyChat/RoomLifecycleManager.swift (3)
513-520: Clarify Assumptions About Task Execution Order
Comments suggest assumptions about task execution order concerning the actor model. For clarity and maintainability, explicitly ensure that tasks will execute in the expected order or adjust the code to avoid relying on specific execution timing.
Would you like to verify the execution order of tasks to ensure it aligns with Swift concurrency guarantees?
815-822: Ensure Consistent Status Transitions During RETRY Operations
In the performAttachmentCycle method, when scheduling a RETRY operation, ensure that status transitions are handled consistently to avoid race conditions or inconsistent states.
Consider reviewing the state machine to ensure all possible transitions are accounted for.
370-373: Thread Safety Concerns with Subscription Management
Access to roomStatusChangeSubscriptions in emitRoomStatusChange(_:) might not be thread-safe. Since actors serialize access to their mutable state, ensure that roomStatusChangeSubscriptions is only modified within the actor's context.
Consider adding annotations or comments to confirm that this method is safe within the actor model.
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Actionable comments posted: 0
🧹 Outside diff range and nitpick comments (1)
Sources/AblyChat/RoomLifecycleManager.swift (1)
513-520: Consider extracting common RETRY scheduling code.The RETRY operation scheduling code is duplicated in two locations. While the comments explain the actor isolation assumptions, consider extracting this into a helper method to maintain DRY principles.
+ private func scheduleRetryOperation( + triggeringContributor: Contributor, + errorForSuspendedStatus: ARTErrorInfo + ) -> Task<Void, Never> { + let retryOperationTask = scheduleAnOperation( + kind: .retry( + triggeringContributor: triggeringContributor, + errorForSuspendedStatus: errorForSuspendedStatus + ) + ) + changeStatus(to: .suspendedAwaitingStartOfRetryOperation( + retryOperationTask: retryOperationTask, + error: errorForSuspendedStatus + )) + return retryOperationTask + }Also applies to: 815-822
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
📒 Files selected for processing (4)
Sources/AblyChat/Room.swift(1 hunks)Sources/AblyChat/RoomLifecycleManager.swift(9 hunks)Tests/AblyChatTests/DefaultRoomLifecycleManagerTests.swift(29 hunks)Tests/AblyChatTests/Mocks/MockRoomLifecycleManager.swift(1 hunks)
🚧 Files skipped from review as they are similar to previous changes (2)
- Sources/AblyChat/Room.swift
- Tests/AblyChatTests/Mocks/MockRoomLifecycleManager.swift
🧰 Additional context used
📓 Learnings (2)
Sources/AblyChat/RoomLifecycleManager.swift (8)
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#120
File: Sources/AblyChat/RoomLifecycleManager.swift:738-749
Timestamp: 2024-11-19T13:22:17.968Z
Learning: In `Sources/AblyChat/RoomLifecycleManager.swift`, for the `scheduleAnOperation(kind:)` function in the Swift codebase, it's acceptable to capture `self` strongly within the scheduled `Task` because the task is executed almost immediately, and potential retain cycles are not a concern in this context.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#120
File: Sources/AblyChat/RoomLifecycleManager.swift:322-324
Timestamp: 2024-11-19T13:22:50.638Z
Learning: In `Sources/AblyChat/RoomLifecycleManager.swift`, the `onRoomStatusChange(bufferingPolicy:)` method already has a TODO to manage subscriptions properly. Avoid flagging this issue in future reviews.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#67
File: Sources/AblyChat/RoomLifecycleManager.swift:235-237
Timestamp: 2024-11-12T15:07:31.866Z
Learning: When code includes a TODO comment referencing an issue, it indicates that the issue is being tracked, and no further action is needed.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#9
File: Sources/AblyChat/RoomStatus.swift:3-33
Timestamp: 2024-11-12T15:07:31.865Z
Learning: When reviewing code, avoid commenting on TODOs that already have a linked GitHub issue, as per the user's preference.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#54
File: Sources/AblyChat/RoomLifecycleManager.swift:262-262
Timestamp: 2024-11-12T15:07:31.865Z
Learning: When a TODO comment references an associated GitHub issue, recognize that the issue is being tracked and avoid suggesting fixes that are already planned.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#67
File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:941-941
Timestamp: 2024-11-12T15:07:31.866Z
Learning: When a TODO comment references an existing GitHub issue, it's acceptable to leave it in the code without requesting its removal.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#67
File: Sources/AblyChat/RoomLifecycleManager.swift:217-220
Timestamp: 2024-11-12T15:07:31.865Z
Learning: In `RoomLifecycleManager`, handling of missing `stateChange.reason` when `stateChange.resumed` is `false` is being tracked in issue #74. Future reviews should be aware of this planned work.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#85
File: Sources/AblyChat/RoomLifecycleManager.swift:140-191
Timestamp: 2024-11-12T15:07:31.865Z
Learning: In `Sources/AblyChat/RoomLifecycleManager.swift`, all cases of the `Status` enum are exhaustively handled in switch statements, so suggesting exhaustive handling is unnecessary.
Tests/AblyChatTests/DefaultRoomLifecycleManagerTests.swift (1)
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#120
File: Sources/AblyChat/RoomLifecycleManager.swift:322-324
Timestamp: 2024-11-19T13:22:50.638Z
Learning: In `Sources/AblyChat/RoomLifecycleManager.swift`, the `onRoomStatusChange(bufferingPolicy:)` method already has a TODO to manage subscriptions properly. Avoid flagging this issue in future reviews.
🔇 Additional comments (7)
Sources/AblyChat/RoomLifecycleManager.swift (4)
48-48: LGTM! Method and variable renaming improves clarity.
The renaming of onChange to onRoomStatusChange and subscriptions to roomStatusChangeSubscriptions enhances code readability by being more specific about their purpose.
Also applies to: 91-91
191-192: LGTM! Well-designed status handling for RETRY operation.
The new suspendedAwaitingStartOfRetryOperation status effectively manages the intermediate state before RETRY, with proper test support via retryOperationTask. The mapping to public status maintains the correct abstraction.
Also applies to: 214-215
730-749: LGTM! Clean implementation of operation scheduling.
The operation scheduling implementation is well-structured and consistent with the codebase's patterns. The logging is comprehensive and will aid in debugging.
328-350: LGTM! Well-structured test support code.
The test-only status change subscription implementation is properly isolated using conditional compilation and well-documented. The implementation follows Swift best practices for test support code.
Tests/AblyChatTests/DefaultRoomLifecycleManagerTests.swift (3)
186-186: Method rename improves clarity and consistency
The rename from onChange to onRoomStatusChange better describes the purpose of the method and maintains consistency throughout the codebase.
Also applies to: 222-222, 245-245, 619-619, 642-642, 679-679, 726-726, 764-764, 790-790, 835-835, 867-867, 927-927, 1064-1064, 1152-1152, 1223-1223, 1269-1269, 1317-1317, 1439-1439, 1514-1514, 1610-1610, 1722-1722, 1815-1815, 1894-1894, 1932-1932
Line range hint 315-412: Well-structured test implementation for RETRY operation
The test thoroughly verifies the RETRY operation behavior when a contributor enters SUSPENDED state, including:
- Transition to SUSPENDED state
- Execution of RETRY operation
- Verification of detach/attach call counts for each contributor
- Proper state transitions
This implementation aligns well with the PR objectives and provides good coverage of the RETRY operation functionality.
Line range hint 1777-1874: Comprehensive test coverage for SUSPENDED event handling
The enhanced test thoroughly verifies the system's behavior when a contributor enters SUSPENDED state with no operation in progress, including:
- Proper state transitions
- Execution of RETRY operation
- Verification of detach/attach call counts
- Cleanup of transient disconnect timeouts
This implementation provides good coverage of the RETRY operation functionality in response to SUSPENDED events.
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Hmm, I merged this one when I should have first of all merged #110 and for some reason the merge didn't cascade. Will revert this merge (i.e. force push to |
Note: This is based on top of #110; please review that one first.
#110 added a method for performing the
RETRYroom lifecycle operation but did not call it. This PR triggers it from the places where the spec says to.Resolves #50.
Summary by CodeRabbit
New Features
Bug Fixes
Tests