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Update duplicate spec points #95

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merged 1 commit into from
Nov 6, 2024

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lawrence-forooghian
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@lawrence-forooghian lawrence-forooghian commented Oct 30, 2024

The duplicate spec points were renamed in ably/specification@0e5ab98.

Summary by CodeRabbit

  • New Features

    • Enhanced error handling for message subscriptions, improving clarity in error reporting.
    • Improved detachment logic for contributors during the release operation.
  • Bug Fixes

    • Fixed issues with state transitions and error conditions in the room lifecycle manager.
  • Tests

    • Added new test cases and enhanced existing ones for better coverage of room lifecycle operations and error handling.

The duplicate spec points were renamed in commit 0e5ab98 of [1]. The
currently-implemented room lifecycle behaviour (I can’t speak for the
messages functionality) now conforms to that commit of the spec.

[1] ably/specification#200.
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coderabbitai bot commented Oct 30, 2024

Caution

Review failed

The head commit changed during the review from b539224 to 20f21c7.

Walkthrough

The changes in this pull request involve modifications to the DefaultMessages and RoomLifecycleManager classes, focusing on error handling, state management, and the robustness of operations. In DefaultMessages, error checks for incoming messages have been enhanced, and subscription logic has been clarified. In RoomLifecycleManager, the handling of the RELEASE operation has been refined, particularly regarding contributor detachment. Additionally, the test suite for RoomLifecycleManager has been expanded to cover more scenarios and ensure correct state transitions.

Changes

File Change Summary
Sources/AblyChat/DefaultMessages.swift - Updated comment identifier for malformed event handling from CHA-M5d to CHA-M5k.
- Enhanced error handling in subscribe method for required fields.
- Modified handleAttach to maintain subscription points on channel resume.
- Updated resolveSubscriptionStart to throw error if channelSerial is undefined.
Sources/AblyChat/RoomLifecycleManager.swift - Renamed comment identifier for releasing state from CHA-RL3c to CHA-RL3l.
- Refined logic for detaching contributors, skipping those in a failed state.
- Preserved retry mechanism for detaching contributors with logging.
Tests/AblyChatTests/RoomLifecycleManagerTests.swift - Added new test cases for performAttachOperation and performDetachOperation.
- Enhanced error handling checks in tests.
- Updated method signatures to be async and throw errors where applicable.

Possibly related PRs

Suggested reviewers

  • umair-ably
  • maratal

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Actionable comments posted: 2

🧹 Outside diff range and nitpick comments (3)
Tests/AblyChatTests/RoomLifecycleManagerTests.swift (3)

Line range hint 705-705: Remove unnecessary await in async let binding

When using async let to initiate an asynchronous task, the await keyword should not be used on the right-hand side. The await is only necessary when retrieving the result of the asynchronous task later in your code. Therefore, the line:

async let _ = await manager.performReleaseOperation()

should be corrected to:

async let _ = manager.performReleaseOperation()

This ensures proper usage of async let without prematurely awaiting the result.

Apply this diff to fix the issue:

-    async let _ = await manager.performReleaseOperation()
+    async let _ = manager.performReleaseOperation()

Line range hint 590-590: Rename variable for clarity

The variable name asyncLetStatusChanges may be unclear and could confuse readers about its purpose. Consider renaming it to statusChanges or statusChangesArray to improve readability and accurately reflect its contents.

Apply this diff to improve variable naming:

-    async let asyncLetStatusChanges = Array(statusChangeSubscription.prefix(2))
+    async let statusChanges = Array(statusChangeSubscription.prefix(2))

Line range hint 464-472: Avoid unnecessary external state tracking in closures

In the attach_whenChannelDetachTriggered_ifADetachFailsItIsRetriedUntilSuccess test, the detachResult closure uses the callCount parameter to track the number of times it has been called:

let detachResult = { @Sendable (callCount: Int) async -> MockRoomLifecycleContributorChannel.AttachOrDetachResult in
    if callCount == 1 {
        return .failure(.create(withCode: 123, message: ""))
    } else {
        return .success
    }
}

However, tracking callCount externally is unnecessary. You can utilize the inherent properties of the closure or use a SignallableChannelOperation to manage completion results without additional state variables.

Refactor the closure to eliminate external state tracking:

let contributorDetachOperation = SignallableChannelOperation()
var detachAttempts = 0
let detachBehavior = MockRoomLifecycleContributorChannel.AttachOrDetachBehavior.fromFunction { _ in
    detachAttempts += 1
    if detachAttempts == 1 {
        return .failure(.create(withCode: 123, message: ""))
    } else {
        return .success
    }
}
📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Reviewing files that changed from the base of the PR and between 21956dc and 20f21c7.

📒 Files selected for processing (3)
  • Sources/AblyChat/DefaultMessages.swift (1 hunks)
  • Sources/AblyChat/RoomLifecycleManager.swift (1 hunks)
  • Tests/AblyChatTests/RoomLifecycleManagerTests.swift (2 hunks)
🧰 Additional context used
📓 Learnings (2)
Sources/AblyChat/RoomLifecycleManager.swift (4)
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#54
File: Sources/AblyChat/RoomLifecycleManager.swift:0-0
Timestamp: 2024-09-18T18:34:37.252Z
Learning: In `RoomLifecycleManager`, handling of unexpected contributor states after attach failure will be addressed in issue #49.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#54
File: Sources/AblyChat/RoomLifecycleManager.swift:0-0
Timestamp: 2024-10-08T15:58:47.376Z
Learning: In `RoomLifecycleManager`, handling of unexpected contributor states after attach failure will be addressed in issue #49.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#67
File: Sources/AblyChat/RoomLifecycleManager.swift:217-220
Timestamp: 2024-10-08T15:58:47.376Z
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#67
File: Sources/AblyChat/RoomLifecycleManager.swift:217-220
Timestamp: 2024-10-01T19:44:34.032Z
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.
Tests/AblyChatTests/RoomLifecycleManagerTests.swift (8)
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#54
File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:627-631
Timestamp: 2024-10-08T15:58:47.376Z
Learning: The closure `detachImpl` in `RoomLifecycleManagerTests.swift` functions as intended without external state variables to track invocation count.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#54
File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:627-631
Timestamp: 2024-10-01T12:55:21.968Z
Learning: The closure `detachImpl` in `RoomLifecycleManagerTests.swift` functions as intended without external state variables to track invocation count.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#54
File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:335-335
Timestamp: 2024-09-23T19:56:39.435Z
Learning: In Swift Testing, test method names do not need to start with `test`.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#54
File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:335-335
Timestamp: 2024-10-08T15:58:47.376Z
Learning: In Swift Testing, test method names do not need to start with `test`.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#67
File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:941-941
Timestamp: 2024-10-01T19:46:16.467Z
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: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:941-941
Timestamp: 2024-10-08T15:58:47.376Z
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: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:836-836
Timestamp: 2024-10-01T19:46:04.461Z
Learning: Before suggesting the removal of TODO comments, check if they reference existing GitHub issues that track the pending work.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#67
File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:836-836
Timestamp: 2024-10-08T15:58:47.376Z
Learning: Before suggesting the removal of TODO comments, check if they reference existing GitHub issues that track the pending work.
🔇 Additional comments (2)
Sources/AblyChat/DefaultMessages.swift (1)

54-54: LGTM: Specification point update matches implementation.

The update from CHA-M5d to CHA-M5k aligns with the Ably specification changes. The implementation correctly handles malformed events by validating required fields (text, extras, timeserial, clientID) and throwing appropriate errors, ensuring malformed events are not emitted to subscribers.

Let's verify this change aligns with the specification update:

✅ Verification successful

Specification point update verified and consistent

The verification confirms:

  • The old specification point CHA-M5d has been completely removed from the codebase
  • The new specification point CHA-M5k appears exactly once in the expected location
  • The change maintains specification consistency across the codebase
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Verify the specification point update across the codebase
# Expected: Only one occurrence of CHA-M5k, no occurrences of CHA-M5d

echo "Checking for old spec point (should be 0 results):"
rg "CHA-M5d"

echo "Checking for new spec point (should be 1 result):"
rg "CHA-M5k"

Length of output: 420

Tests/AblyChatTests/RoomLifecycleManagerTests.swift (1)

Line range hint 653-698: Ensure consistent use of async let without await

In the release_whenReleasing test, you correctly use async let without await when initiating the first release operation:

async let _ = manager.performReleaseOperation(testsOnly_forcingOperationID: firstReleaseOperationID)

However, ensure this practice is consistent throughout your tests to prevent confusion and maintain code consistency.

@lawrence-forooghian lawrence-forooghian force-pushed the address-duplicate-spec-points branch from b539224 to 20f21c7 Compare November 6, 2024 18:21
@lawrence-forooghian
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@umair-ably @maratal I’m going to merge this one so that I can merge #87; I don't think there's anything controversial here.

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