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[ECO-4982] Integrate lifecycle manager into existing room operations #106

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lawrence-forooghian
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@lawrence-forooghian lawrence-forooghian commented Nov 11, 2024

Replace the existing temporary implementations of room attach / detach / status with those provided by the room lifecycle manager.

Part of #47.

Summary by CodeRabbit

Release Notes

  • New Features

    • Enhanced room lifecycle management with new classes for managing room states and interactions.
    • Introduced asynchronous operations for attaching and detaching rooms, improving responsiveness.
    • Added a mock lifecycle manager for testing, allowing for better simulation of room behavior.
    • Implemented a new clock class to facilitate asynchronous sleep operations.
    • Updated Room protocol to support asynchronous status retrieval.
  • Bug Fixes

    • Improved type handling in tests to align with updated room management structures.
  • Documentation

    • Updated test methods to reflect changes in room lifecycle management and initialization parameters.
  • Chores

    • Refactored existing tests to streamline lifecycle management verification and enhance clarity.

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coderabbitai bot commented Nov 11, 2024

Walkthrough

The pull request introduces significant changes to the AblyChat SDK, primarily focusing on enhancing room lifecycle management within the chat client. Key updates include the addition of a lifecycleManagerFactory parameter in the initialization of the rooms property, along with the introduction of new classes and protocols that facilitate asynchronous operations for room management. The modifications extend to various components, including the Room protocol, DefaultRoom, and related test files, ensuring a more structured and flexible approach to managing chat room lifecycles.

Changes

File Path Change Summary
Sources/AblyChat/ChatClient.swift Updated DefaultChatClient to initialize rooms with a new lifecycleManagerFactory parameter.
Sources/AblyChat/DefaultRoomLifecycleContributor.swift Added DefaultRoomLifecycleContributor and DefaultRoomLifecycleContributorChannel classes for managing room lifecycle events, with methods for attaching/detaching channels and handling state changes.
Sources/AblyChat/Room.swift Updated Room protocol with a new asynchronous status property and modified DefaultRoom to incorporate a generic type for lifecycle management, refactoring methods for channel operations.
Sources/AblyChat/RoomFeature.swift Consolidated case handling in RoomFeature for channel name suffixes, triggering a fatalError for unimplemented features.
Sources/AblyChat/RoomLifecycleManager.swift Enhanced RoomLifecycleManager protocol with new asynchronous methods and added RoomLifecycleManagerFactory for creating lifecycle managers.
Sources/AblyChat/Rooms.swift Added a generic parameter for LifecycleManagerFactory in DefaultRooms, updating the initializer and internal structures to manage room instances with lifecycle management capabilities.
Sources/AblyChat/SimpleClock.swift Introduced DefaultSimpleClock class implementing the SimpleClock protocol with an asynchronous sleep method.
Tests/AblyChatTests/DefaultChatClientTests.swift Updated type assertion for rooms in tests to reflect the new generic type with DefaultRoomLifecycleManagerFactory.
Tests/AblyChatTests/DefaultRoomTests.swift Refactored tests for DefaultRoom to include lifecycleManagerFactory, enhancing lifecycle management simulation in tests.
Tests/AblyChatTests/DefaultRoomsTests.swift Updated DefaultRooms initialization in tests to include lifecycleManagerFactory, ensuring consistency with implementation changes.
Tests/AblyChatTests/Mocks/MockRoomLifecycleManager.swift Added MockRoomLifecycleManager actor to simulate lifecycle management operations in tests, including properties and methods for tracking operation results.
Tests/AblyChatTests/Mocks/MockRoomLifecycleManagerFactory.swift Introduced MockRoomLifecycleManagerFactory to create mock lifecycle managers for testing purposes.

Assessment against linked issues

Objective Addressed Explanation
Integrate room lifecycle manager with the rest of the SDK (ECO-4982)

Possibly related PRs

Suggested reviewers

  • umair-ably
  • maratal

"In the chat rooms where we play,
A lifecycle manager leads the way!
With factories and contributors in sight,
Our rooms will thrive, oh what a delight!
As we attach and detach with glee,
Together we'll chat, just you and me!" 🐇✨


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Actionable comments posted: 11

🧹 Outside diff range and nitpick comments (29)
Tests/AblyChatTests/Mocks/MockRoomLifecycleManagerFactory.swift (2)

6-8: Consider adding documentation for testing scenarios

While the initialization is straightforward, adding documentation about common testing scenarios and usage examples would improve the mock's usability.

+/// A mock factory for creating RoomLifecycleManager instances in tests.
+/// Usage example:
+/// ```
+/// let mockManager = MockRoomLifecycleManager()
+/// let factory = MockRoomLifecycleManagerFactory(manager: mockManager)
+/// ```
 init(manager: MockRoomLifecycleManager = .init()) {
     self.manager = manager
 }

1-13: Consider adding verification methods for testing

To enhance testability, consider adding methods to verify if the factory was called with expected parameters.

 actor MockRoomLifecycleManagerFactory: RoomLifecycleManagerFactory {
     private let manager: MockRoomLifecycleManager
+    private var createManagerCalls: [(contributors: [DefaultRoomLifecycleContributor], logger: any InternalLogger)] = []
 
     init(manager: MockRoomLifecycleManager = .init()) {
         self.manager = manager
     }
 
     func createManager(contributors: [DefaultRoomLifecycleContributor], logger: any InternalLogger) async -> MockRoomLifecycleManager {
+        createManagerCalls.append((contributors: contributors, logger: logger))
         manager
     }
+    
+    /// Returns the number of times createManager was called
+    func createManagerCallCount() async -> Int {
+        createManagerCalls.count
+    }
+    
+    /// Returns the parameters used in createManager calls
+    func getCreateManagerCalls() async -> [(contributors: [DefaultRoomLifecycleContributor], logger: any InternalLogger)] {
+        createManagerCalls
+    }
 }
Sources/AblyChat/SimpleClock.swift (1)

12-14: Consider adding bounds checking for extreme time intervals

While the current implementation works well for typical use cases, consider adding validation for extreme time intervals to prevent potential overflow when converting to nanoseconds.

 internal func sleep(timeInterval: TimeInterval) async throws {
+    guard timeInterval >= 0, timeInterval <= TimeInterval(UInt64.max) / Double(NSEC_PER_SEC) else {
+        throw SimpleClock.Error.invalidTimeInterval
+    }
     try await Task.sleep(nanoseconds: UInt64(timeInterval * Double(NSEC_PER_SEC)))
 }

Add this error type above the protocol:

extension SimpleClock {
    enum Error: Swift.Error {
        case invalidTimeInterval
    }
}
Sources/AblyChat/RoomFeature.swift (1)

18-21: Consider enhancing error handling for unimplemented features

While fatalError is appropriate for development, consider these improvements for better debugging and maintenance:

 case .typing, .reactions, .presence, .occupancy:
     // We'll add these, with reference to the relevant spec points, as we implement these features
-    fatalError("Don't know channel name suffix for room feature \(self)")
+    // TODO: [ECO-4982] Implement channel name suffixes for remaining features
+    assertionFailure("Channel name suffix not implemented for room feature \(self)")
+    return "unimplemented_\(self)"

This change:

  1. Links the TODO to the current ticket
  2. Uses assertionFailure which fails in debug but allows release builds
  3. Returns a fallback value that makes debugging easier
Tests/AblyChatTests/DefaultChatClientTests.swift (1)

25-27: LGTM! Consider adding tests for custom lifecycle manager factories.

The type assertion change correctly reflects the new generic implementation of DefaultRooms. The test properly verifies both the type casting and property preservation.

Consider adding a test case that verifies DefaultRooms works with custom lifecycle manager factories to ensure the generic implementation is truly flexible. Here's a suggested test:

@Test
func rooms_withCustomLifecycleManagerFactory() throws {
    // Given: A custom lifecycle manager factory
    struct CustomFactory: RoomLifecycleManagerFactory {
        func create(for room: Room) -> RoomLifecycleManager {
            return DefaultRoomLifecycleManager(room: room)
        }
    }
    
    // And: An instance of DefaultChatClient configured with the custom factory
    let realtime = MockRealtime.create()
    let options = ClientOptions()
    let client = DefaultChatClient(
        realtime: realtime,
        clientOptions: options,
        lifecycleManagerFactory: CustomFactory()
    )

    // Then: Its `rooms` property returns an instance of DefaultRooms with the custom factory
    let rooms = client.rooms
    let defaultRooms = try #require(rooms as? DefaultRooms<CustomFactory>)
    #expect(defaultRooms.testsOnly_realtime === realtime)
    #expect(defaultRooms.clientOptions.isEqualForTestPurposes(options))
}
Sources/AblyChat/DefaultRoomLifecycleContributor.swift (1)

1-48: Consider enhancing error handling and state management.

While the implementation is solid, consider these architectural improvements:

  1. Add state validation in the contributor to ensure operations are only performed in valid states
  2. Consider implementing retry logic for transient failures in channel operations
  3. Add telemetry/logging for better observability of lifecycle events

This aligns with the broader integration goals mentioned in ECO-4982 and would make the system more robust.

Sources/AblyChat/ChatClient.swift (1)

23-24: Consider making the lifecycle manager factory configurable

While the integration of the lifecycle manager aligns well with the PR objectives, creating the factory with default configuration might limit flexibility. Consider allowing the factory to be injected through ClientOptions or the initializer parameters.

Here's a suggested approach:

 public struct ClientOptions: Sendable {
     public var logHandler: LogHandler?
     public var logLevel: LogLevel?
+    public var roomLifecycleManagerFactory: RoomLifecycleManagerFactory?
 
-    public init(logHandler: (any LogHandler)? = nil, logLevel: LogLevel? = nil) {
+    public init(
+        logHandler: (any LogHandler)? = nil,
+        logLevel: LogLevel? = nil,
+        roomLifecycleManagerFactory: RoomLifecycleManagerFactory? = nil
+    ) {
         self.logHandler = logHandler
         self.logLevel = logLevel
+        self.roomLifecycleManagerFactory = roomLifecycleManagerFactory
     }
 }

 public actor DefaultChatClient: ChatClient {
     // ...
     public init(realtime: RealtimeClient, clientOptions: ClientOptions?) {
         self.realtime = realtime
         self.clientOptions = clientOptions ?? .init()
         logger = DefaultInternalLogger(logHandler: self.clientOptions.logHandler, logLevel: self.clientOptions.logLevel)
-        let roomLifecycleManagerFactory = DefaultRoomLifecycleManagerFactory()
+        let roomLifecycleManagerFactory = self.clientOptions.roomLifecycleManagerFactory ?? DefaultRoomLifecycleManagerFactory()
         rooms = DefaultRooms(realtime: realtime, clientOptions: self.clientOptions, logger: logger, lifecycleManagerFactory: roomLifecycleManagerFactory)
     }
     // ...
 }
Tests/AblyChatTests/Mocks/MockRoomLifecycleManager.swift (2)

19-25: Fix error message in fatalError.

The error message mentions "performAttachOperation" but this is in the attach operation context.

-            fatalError("In order to call performAttachOperation, attachResult must be passed to the initializer")
+            fatalError("In order to call performAttachOperation, attachResult must be passed to the initializer")

42-52: LGTM! Consider weak references for long-lived tests.

While the implementation is correct, consider using weak references if subscriptions might be long-lived in tests to prevent potential memory retention.

-    private var subscriptions: [Subscription<RoomStatusChange>] = []
+    private var subscriptions: [Weak<Subscription<RoomStatusChange>>] = []
Tests/AblyChatTests/DefaultRoomsTests.swift (1)

13-13: LGTM! Consider extracting common test setup.

The addition of lifecycleManagerFactory parameter is correct and aligns with the integration objectives. However, since this initialization is repeated in all test methods, consider extracting it to a helper method or setup function to improve test maintainability.

private func createDefaultRooms() -> DefaultRooms<MockRoomLifecycleManagerFactory> {
    let realtime = MockRealtime.create(channels: .init(channels: [
        .init(name: "basketball::$chat::$chatMessages"),
    ]))
    return DefaultRooms(
        realtime: realtime,
        clientOptions: .init(),
        logger: TestLogger(),
        lifecycleManagerFactory: MockRoomLifecycleManagerFactory()
    )
}
Sources/AblyChat/Rooms.swift (2)

9-9: Consider decoupling DefaultRooms from DefaultRoomLifecycleContributor for greater flexibility

The generic constraint LifecycleManagerFactory: RoomLifecycleManagerFactory<DefaultRoomLifecycleContributor> tightly couples DefaultRooms with DefaultRoomLifecycleContributor. If you plan to support different implementations of RoomLifecycleContributor in the future, consider abstracting this relationship. You can achieve this by:

  • Making RoomLifecycleManagerFactory generic over the RoomLifecycleContributor type.
  • Introducing an associated type in the RoomLifecycleManagerFactory protocol.

This will enhance the modularity and reusability of your code.


Line range hint 56-58: Provide a safe implementation for the release method

The release(roomID:) method currently contains a fatalError("Not yet implemented"), which will crash the application if called. To prevent potential runtime crashes, consider providing a safe implementation or throwing a meaningful error to inform callers that the method is not yet available.

Would you like assistance in implementing a placeholder for the release method that safely handles the unimplemented functionality?

Sources/AblyChat/Room.swift (2)

80-83: Consider including all required room features in createChannels

Currently, createChannels only includes the messages feature. If other features like presence, reactions, typing, and occupancy are to be supported, consider including them in the channel creation to ensure they are initialized properly.


124-128: Consider marking status property as nonisolated if accessed frequently

If the status property is accessed frequently and does not modify the actor's isolated state, consider marking it as nonisolated to allow concurrent reads without actor hopping. Ensure thread safety if doing so.

Tests/AblyChatTests/DefaultRoomTests.swift (5)

17-17: Consider refactoring the initializer for better readability

The DefaultRoom initializer at line 17 has a long list of parameters, which can impact readability and maintainability. Consider refactoring by formatting the parameters across multiple lines or using a builder pattern if appropriate.

Apply this diff to improve readability:

 let room = try await DefaultRoom(
     realtime: realtime,
     chatAPI: ChatAPI(realtime: realtime),
     roomID: "basketball",
     options: .init(),
     logger: TestLogger(),
     lifecycleManagerFactory: MockRoomLifecycleManagerFactory()
 )

55-56: Consider avoiding #expect with await for better failure messages

Using #expect with await in asynchronous tests may result in less informative failure messages, making debugging harder. Consider using XCTAssertEqual or other XCTest assertions that provide better diagnostic information.

This suggestion is based on previous learning:

In Swift Testing, using #expect with await may result in less informative failure messages when debugging asynchronous tests.

Apply this diff to improve the assertions:

-        #expect(Result.areIdentical(result, managerAttachResult))
-        #expect(await lifecycleManager.attachCallCount == 1)
+        XCTAssertTrue(Result.areIdentical(result, managerAttachResult))
+        let callCount = await lifecycleManager.attachCallCount
+        XCTAssertEqual(callCount, 1)

91-92: Consider avoiding #expect with await for better failure messages

As previously mentioned, using #expect with asynchronous code may lead to less helpful failure messages. Switching to XCTest assertions can enhance debuggability.

Apply this diff to improve the assertions:

-        #expect(Result.areIdentical(result, managerDetachResult))
-        #expect(await lifecycleManager.detachCallCount == 1)
+        XCTAssertTrue(Result.areIdentical(result, managerDetachResult))
+        let callCount = await lifecycleManager.detachCallCount
+        XCTAssertEqual(callCount, 1)

114-114: Consider avoiding #expect with await for better failure messages

Using #expect with await may result in less informative error messages. Using XCTAssertEqual can provide clearer insights when tests fail.

Apply this diff to improve the assertion:

-        #expect(await room.status == lifecycleManagerRoomStatus)
+        let status = await room.status
+        XCTAssertEqual(status, lifecycleManagerRoomStatus)

137-138: Consider avoiding #expect with await for better failure messages

As with previous instances, replace #expect with XCTest assertions to improve the clarity of failure messages in asynchronous tests.

Apply this diff to improve the assertion:

-        let roomStatusChange = try #require(await roomStatusSubscription.first { _ in true })
-        #expect(roomStatusChange == managerStatusChange)
+        let roomStatusChange = try await roomStatusSubscription.first { _ in true }
+        XCTAssertEqual(roomStatusChange, managerStatusChange)
Sources/AblyChat/RoomLifecycleManager.swift (10)

43-48: Clarify the roomStatus property access level and async usage

The roomStatus property is declared as async:

var roomStatus: RoomStatus { get async }

Since RoomStatus is likely a simple value type, consider whether accessing it needs to be async. If the property access doesn't involve asynchronous operations, removing async can simplify the interface and usage. Additionally, ensure that any conforming types handle this async requirement appropriately.


50-58: Specify generic constraints for RoomLifecycleManagerFactory

The RoomLifecycleManagerFactory protocol defines associated types without constraints:

associatedtype Contributor: RoomLifecycleContributor
associatedtype Manager: RoomLifecycleManager

Consider adding constraints to Manager to ensure it's associated with the Contributor type:

associatedtype Manager: RoomLifecycleManager where Manager.Contributor == Contributor

This can help enforce consistency between the factory's contributor and the manager's contributor types, preventing potential type mismatches.


60-71: Initialize DefaultRoomLifecycleManager without await

In DefaultRoomLifecycleManagerFactory, the createManager function is marked as async, but the initialization doesn't perform any asynchronous operations:

internal func createManager(
    contributors: [DefaultRoomLifecycleContributor],
    logger: InternalLogger
) async -> DefaultRoomLifecycleManager<DefaultRoomLifecycleContributor> {
    await .init(
        contributors: contributors,
        logger: logger,
        clock: DefaultSimpleClock()
    )
}

Since the initializer is synchronous, consider removing the async keyword from both the function and initializer to simplify usage. Alternatively, if the initializer must be asynchronous, clarify the need to await it during initialization.


647-652: Duplicate method definitions for performAttachOperation

There are two definitions for performAttachOperation:

internal func performAttachOperation() async throws {
    try await _performAttachOperation(forcingOperationID: nil)
}

internal func performAttachOperation(testsOnly_forcingOperationID forcedOperationID: UUID? = nil) async throws {
    try await _performAttachOperation(forcingOperationID: forcedOperationID)
}

Consider merging these into a single method with a default parameter:

internal func performAttachOperation(forcingOperationID: UUID? = nil) async throws {
    try await _performAttachOperation(forcingOperationID: forcingOperationID)
}

This reduces redundancy and simplifies the API. If the testsOnly_ prefix is required for testing purposes, consider using conditional compilation directives to exclude test-specific code from production builds.


658-658: Update Documentation Comment Formatting

In the documentation for _performAttachOperation, there's a minor formatting issue:

/// - Parameters:
///   - forcedOperationID: Allows tests to force the operation to have a given ID. In combination with the ``testsOnly_subscribeToOperationWaitEvents`` API, this allows tests to verify that one test-initiated operation is waiting for another test-initiated operation.

Ensure there's an empty line after the documentation comment and before the method definition to improve readability and adhere to standard Swift documentation practices.


766-773: Duplicate method definitions for performDetachOperation

Similarly to performAttachOperation, there are two definitions for performDetachOperation:

internal func performDetachOperation() async throws {
    try await _performDetachOperation(forcingOperationID: nil)
}

internal func performDetachOperation(testsOnly_forcingOperationID forcedOperationID: UUID? = nil) async throws {
    try await _performDetachOperation(forcingOperationID: forcedOperationID)
}

Consider merging these into a single method with a default parameter to reduce redundancy:

internal func performDetachOperation(forcingOperationID: UUID? = nil) async throws {
    try await _performDetachOperation(forcingOperationID: forcingOperationID)
}

778-778: Update Documentation Comment Formatting

As with the previous comment, in the documentation for _performDetachOperation, there is a formatting issue:

/// - Parameters:
///   - forcedOperationID: Allows tests to force the operation to have a given ID. In combination with the ``testsOnly_subscribeToOperationWaitEvents`` API, this allows tests to verify that one test-initiated operation is waiting for another test-initiated operation.

Ensure there's an empty line between the documentation comment and the method definition for consistency and readability.


Line range hint 646-773: Consider Extracting Common Operation Logic

The performAttachOperation and performDetachOperation methods have similar structures, including handling of operation IDs and waiting for operations to complete. Consider extracting common logic into a shared function or using generic methods to reduce code duplication and enhance maintainability.


Line range hint 43-773: Review the Use of Force Unwrapping and Force Tries

Throughout the code, particularly in the waitForCompletionOfOperationWithID method and other areas, force unwrapping and force tries are used:

try! await clock.sleep(timeInterval: 1)

Force unwrapping can lead to runtime crashes if not carefully managed. It's recommended to handle potential errors gracefully using do-catch blocks or propagating errors using try without the exclamation mark. This enhances the robustness of the code.


Line range hint 855-862: Ensure Proper Task Cancellation Handling

In the bodyOfReleaseOperation method, there's a TODO comment regarding task cancellation:

// TODO: Make this not trap in the case where the Task is cancelled (as part of the broader https://github.com/ably-labs/ably-chat-swift/issues/29 for handling task cancellation)

Properly handling task cancellation is crucial to prevent unexpected behavior or resource leaks. Consider addressing this TODO by implementing cancellation checks and ensuring that your asynchronous operations respond appropriately to cancellations.

Would you like help implementing proper task cancellation handling in this area?

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Reviewing files that changed from the base of the PR and between a1703dc and 03b31b3.

📒 Files selected for processing (12)
  • Sources/AblyChat/ChatClient.swift (1 hunks)
  • Sources/AblyChat/DefaultRoomLifecycleContributor.swift (1 hunks)
  • Sources/AblyChat/Room.swift (6 hunks)
  • Sources/AblyChat/RoomFeature.swift (1 hunks)
  • Sources/AblyChat/RoomLifecycleManager.swift (3 hunks)
  • Sources/AblyChat/Rooms.swift (3 hunks)
  • Sources/AblyChat/SimpleClock.swift (1 hunks)
  • Tests/AblyChatTests/DefaultChatClientTests.swift (1 hunks)
  • Tests/AblyChatTests/DefaultRoomTests.swift (1 hunks)
  • Tests/AblyChatTests/DefaultRoomsTests.swift (3 hunks)
  • Tests/AblyChatTests/Mocks/MockRoomLifecycleManager.swift (1 hunks)
  • Tests/AblyChatTests/Mocks/MockRoomLifecycleManagerFactory.swift (1 hunks)
🧰 Additional context used
📓 Learnings (7)
Sources/AblyChat/DefaultRoomLifecycleContributor.swift (2)
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.
Sources/AblyChat/Room.swift (2)
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#77
File: Sources/AblyChat/Room.swift:14-14
Timestamp: 2024-10-08T15:58:47.376Z
Learning: In the codebase, the term `status` now has a new meaning, and its usage is intentional.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#77
File: Sources/AblyChat/Room.swift:14-14
Timestamp: 2024-10-01T21:58:50.246Z
Learning: In the codebase, the term `status` now has a new meaning, and its usage is intentional.
Sources/AblyChat/RoomLifecycleManager.swift (2)
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.
Tests/AblyChatTests/DefaultChatClientTests.swift (4)
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#61
File: Tests/AblyChatTests/DefaultRoomTests.swift:33-34
Timestamp: 2024-10-08T15:58:49.567Z
Learning: In Swift Testing, using `#expect` with `await` may result in less informative failure messages when debugging asynchronous tests.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#61
File: Tests/AblyChatTests/DefaultRoomTests.swift:33-34
Timestamp: 2024-10-08T15:58:47.376Z
Learning: In Swift Testing, using `#expect` with `await` may result in less informative failure messages when debugging asynchronous tests.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#61
File: Tests/AblyChatTests/DefaultRoomTests.swift:33-34
Timestamp: 2024-09-19T18:44:56.819Z
Learning: In Swift Testing, using `#expect` with `await` may result in less informative failure messages when debugging asynchronous tests.
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`.
Tests/AblyChatTests/DefaultRoomTests.swift (7)
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: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: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#61
File: Tests/AblyChatTests/DefaultRoomTests.swift:33-34
Timestamp: 2024-10-08T15:58:47.376Z
Learning: In Swift Testing, using `#expect` with `await` may result in less informative failure messages when debugging asynchronous tests.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#61
File: Tests/AblyChatTests/DefaultRoomTests.swift:33-34
Timestamp: 2024-10-08T15:58:49.567Z
Learning: In Swift Testing, using `#expect` with `await` may result in less informative failure messages when debugging asynchronous tests.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#61
File: Tests/AblyChatTests/DefaultRoomTests.swift:33-34
Timestamp: 2024-09-19T18:44:56.819Z
Learning: In Swift Testing, using `#expect` with `await` may result in less informative failure messages when debugging asynchronous tests.
Tests/AblyChatTests/DefaultRoomsTests.swift (4)
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#54
File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:499-504
Timestamp: 2024-10-01T12:47:28.179Z
Learning: In test closures, parameters like `callCount` may be used to track invocation counts correctly across invocations.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#54
File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:499-504
Timestamp: 2024-10-08T15:58:47.376Z
Learning: In test closures, parameters like `callCount` may be used to track invocation counts correctly across invocations.
Tests/AblyChatTests/Mocks/MockRoomLifecycleManager.swift (5)
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: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#67
File: Tests/AblyChatTests/Mocks/MockRoomLifecycleContributorChannel.swift:98-102
Timestamp: 2024-10-01T19:43:27.683Z
Learning: The cleanup of old subscriptions in `MockRoomLifecycleContributorChannel` is acknowledged with a TODO comment and is tracked in issue #36.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#67
File: Tests/AblyChatTests/Mocks/MockRoomLifecycleContributorChannel.swift:98-102
Timestamp: 2024-10-08T15:58:47.376Z
Learning: The cleanup of old subscriptions in `MockRoomLifecycleContributorChannel` is acknowledged with a TODO comment and is tracked in issue #36.
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`.
🔇 Additional comments (24)
Tests/AblyChatTests/Mocks/MockRoomLifecycleManagerFactory.swift (1)

3-4: LGTM: Good use of actor for thread-safe mock implementation

The actor designation ensures thread-safe access to the manager instance, which is particularly important when testing concurrent operations.

Sources/AblyChat/SimpleClock.swift (1)

11-15: Implementation looks good!

The DefaultSimpleClock implementation correctly conforms to the SimpleClock protocol and properly handles the time unit conversion for Task.sleep. The use of final class is appropriate for performance optimization.

Sources/AblyChat/RoomFeature.swift (1)

18-21: Verify the removal of channel name suffix for typing feature

The consolidation of cases suggests that the .typing feature's channel name suffix implementation has been removed. Let's verify if this change is intentional and doesn't break existing functionality.

✅ Verification successful

The consolidation of typing feature is intentional and correct

The git history and codebase analysis reveals that this change is part of a planned restructuring where:

  1. The typing feature was previously implemented with a channel suffix "typingIndicators"
  2. The change is part of a broader integration of the room lifecycle manager (commit 03b31b3)
  3. The typing feature is still actively used in the codebase (Example/AblyChatExample/ContentView.swift shows typing subscription)
  4. Error handling for typing-related operations is properly maintained in the Errors.swift file

The consolidation of these cases with fatalError is intentional as these features will be implemented with reference to spec points in the future, as indicated by the comment.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Check for any existing usage of typing feature channel names
# that might be affected by this change

# Search for typing-related channel name usage
rg -l "typing.*channel|channel.*typing" --type swift

# Search for tests related to typing channels
rg -l "test.*typing.*channel|channel.*typing.*test" --type swift

Length of output: 121


Script:

#!/bin/bash
# Let's try a broader search to understand the context and usage of RoomFeature enum

# Search for RoomFeature usage
rg -A 5 "RoomFeature" --type swift

# Search for any typing-related functionality
rg -A 5 "\.typing" --type swift

# Look for the previous implementation of this file
git log -p -- Sources/AblyChat/RoomFeature.swift

Length of output: 15425

Sources/AblyChat/DefaultRoomLifecycleContributor.swift (3)

3-11: LGTM! Well-structured actor implementation.

The actor pattern is appropriately used here for thread-safe state management, with clean dependency injection through the constructor.


26-32: LGTM! Clean async/await implementation for channel operations.

The attach and detach operations are properly implemented with async/await pattern and appropriate error handling.


14-16: ⚠️ Potential issue

Implementation needed for emitDiscontinuity.

The TODO references issue #47 which aligns with the PR objectives. However, this is a critical component of the lifecycle management system.

Let's verify the scope of this TODO:

#!/bin/bash
# Check the referenced issue and related discussions
gh issue view 47 --json title,body,comments

# Look for any other related TODOs
rg -g '!node_modules' -g '!.git' "TODO.*#47" 
Sources/AblyChat/ChatClient.swift (2)

Line range hint 27-33: Ensure unimplemented properties are tracked

The connection and clientID properties currently throw fatal errors. While this is outside the scope of this PR, it's important to ensure this technical debt is tracked.

#!/bin/bash
# Description: Look for related issues or TODOs

# Check for related issues in the codebase
echo "Checking for related TODOs or FIXMEs..."
rg -p "TODO.*(?:connection|clientID)" Sources/
rg -p "FIXME.*(?:connection|clientID)" Sources/

# Check for related test coverage
echo "Checking for related test coverage..."
rg -p "func test.*(?:connection|clientID)" Tests/

Would you like me to create a GitHub issue to track the implementation of these properties?


23-24: Verify integration with DefaultRooms and lifecycle manager

Let's ensure the integration is properly implemented across the codebase.

✅ Verification successful

Let me gather more information about the DefaultRoomLifecycleManagerFactory implementation.


Let me check one more aspect to verify the DefaultRooms implementation and its relationship with the lifecycle manager.


Integration verified and properly implemented

The verification shows that:

  • DefaultRoomLifecycleManagerFactory is correctly implemented and conforms to the RoomLifecycleManagerFactory protocol
  • DefaultRooms properly accepts and uses the lifecycleManagerFactory parameter
  • Test coverage exists with MockRoomLifecycleManagerFactory in tests
  • The integration is consistent across ChatClient, DefaultRooms, and Room implementations
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Verify the integration of lifecycle manager

# Check if DefaultRoomLifecycleManagerFactory exists and its implementation
echo "Checking DefaultRoomLifecycleManagerFactory implementation..."
rg -p "class DefaultRoomLifecycleManagerFactory" Sources/

# Verify DefaultRooms accepts the new parameter
echo "Checking DefaultRooms implementation..."
rg -p "DefaultRooms.*lifecycleManagerFactory" Sources/

# Look for any potential usage patterns that might need updating
echo "Checking for other instantiations of DefaultRooms that might need updating..."
rg -p "DefaultRooms\(.*\)" Sources/ Tests/

Length of output: 1413


Script:

#!/bin/bash
# Search for RoomLifecycleManagerFactory protocol and DefaultRoomLifecycleManagerFactory implementation
echo "Checking RoomLifecycleManagerFactory protocol..."
rg -p "protocol RoomLifecycleManagerFactory" Sources/

echo "Checking DefaultRoomLifecycleManagerFactory implementation..."
ast-grep --pattern 'class DefaultRoomLifecycleManagerFactory'

# Check for any mock implementations in tests
echo "Checking mock implementations..."
rg -p "class MockRoomLifecycleManagerFactory" Tests/

# Look for the actual implementation details
echo "Checking factory implementation details..."
rg -A 5 "class DefaultRoomLifecycleManagerFactory" Sources/

Length of output: 1335


Script:

#!/bin/bash
# Check DefaultRooms implementation and its relationship with lifecycle manager
echo "Checking DefaultRooms implementation..."
rg -A 10 "class DefaultRooms" Sources/

# Check the actual usage of lifecycleManagerFactory in DefaultRooms
echo "Checking usage of lifecycleManagerFactory..."
rg -p "lifecycleManagerFactory" Sources/

# Check if there are any other related types or protocols
echo "Checking related types..."
rg -p "protocol Rooms|class.*Rooms" Sources/

Length of output: 1443

Tests/AblyChatTests/Mocks/MockRoomLifecycleManager.swift (4)

1-4: LGTM! Good use of actor for thread-safe state management.

The actor declaration is appropriate for managing concurrent access to shared mutable state in the mock implementation.


5-11: LGTM! Properties are well-structured with appropriate access levels.

The TODO about subscription cleanup is already tracked in issue #36, as confirmed by previous learnings.


13-17: LGTM! Clean initializer with flexible optional parameters.

The initializer provides good flexibility for different test scenarios.


35-40: LGTM! Consistent implementation of room status access.

The computed property follows the same pattern as other properties with appropriate guard and error handling.

Tests/AblyChatTests/DefaultRoomsTests.swift (3)

21-21: LGTM! Type assertion ensures correct factory type.

The addition of the generic type parameter <MockRoomLifecycleManagerFactory> in the type assertion is correct and maintains type safety by ensuring the room is created with the expected mock factory type.


34-34: Duplicate initialization pattern.

This is the same initialization pattern discussed in the previous comment about extracting common test setup.


54-54: Duplicate initialization pattern.

This is the same initialization pattern discussed in the previous comment about extracting common test setup.

Sources/AblyChat/Room.swift (7)

Line range hint 22-26: Conformance to Equatable for RoomStatusChange

Making RoomStatusChange conform to Equatable is beneficial for comparing status changes and simplifies testing.


Line range hint 32-41: Introducing generic LifecycleManagerFactory in DefaultRoom

Adding the generic LifecycleManagerFactory enhances flexibility by allowing different implementations of RoomLifecycleManagerFactory. This design promotes better scalability and testing.


42-44: Declaration of lifecycleManager property

The introduction of the lifecycleManager property aligns with the new lifecycle management approach and centralizes room lifecycle operations.


Line range hint 52-61: Async initializer with lifecycleManagerFactory parameter

Including lifecycleManagerFactory in the initializer and making it async throws is appropriate since the lifecycle manager is created asynchronously. This ensures that all asynchronous setup is completed before the instance is used.


63-69: Initialization of channels, contributors, and lifecycleManager

The creation of channels and contributors followed by the initialization of lifecycleManager ensures that all necessary components are properly set up before the room operations are performed.


111-112: Delegating attach operation to lifecycleManager

The attach method now correctly delegates the attach operation to the lifecycleManager, ensuring consistent lifecycle management.


115-116: Delegating detach operation to lifecycleManager

Similarly, the detach method delegates to lifecycleManager, maintaining consistency in detach operations.

Tests/AblyChatTests/DefaultRoomTests.swift (1)

75-76: Ensure proper initialization of mock lifecycle manager

When initializing MockRoomLifecycleManager with detachResult, verify that all necessary properties are correctly set to simulate different scenarios in your tests.

Run the following script to check the initialization:

✅ Verification successful

Mock lifecycle manager initialization is properly implemented

The MockRoomLifecycleManager implementation is correctly designed with:

  • Optional detachResult parameter in the initializer
  • Proper handling of the detach operation with result validation
  • Clear error messaging when required parameters are missing
  • Additional parameters for comprehensive test scenarios (attachResult, roomStatus)
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Verify that MockRoomLifecycleManager is properly initialized with all required parameters.

# Inspect the initializer of MockRoomLifecycleManager
ast-grep --pattern $'class MockRoomLifecycleManager {
  $$$
  init(detachResult: $_) {
    $$$
  }
  $$$
}'

Length of output: 108


Script:

#!/bin/bash
# Let's try to find the MockRoomLifecycleManager implementation using ripgrep
rg -A 10 "class MockRoomLifecycleManager" --type swift

Length of output: 56


Script:

#!/bin/bash
# Let's first find all Swift test files that might contain our mock
fd ".*Tests\.swift$" --type f

# Then let's look for any file containing "MockRoomLifecycle"
rg "MockRoomLifecycle" --type swift

Length of output: 6993


Script:

#!/bin/bash
# Let's examine the MockRoomLifecycleManager implementation
cat Tests/AblyChatTests/Mocks/MockRoomLifecycleManager.swift

Length of output: 2038

Sources/AblyChat/RoomLifecycleManager.swift (1)

Line range hint 43-773: Address Multiple TODO Comments Throughout the Code

There are several TODO comments indicating areas that need further attention or decisions:

  • Handling unexpected contributor states after attach failure
  • Deciding the right thing to do when state change events lack reasons
  • Implementing asynchronous behavior as per the specification
  • Determining correct wait times for retries

It's important to address these TODOs to ensure the code behaves as expected and meets the required specifications. Unresolved TODOs can lead to incomplete features or unexpected issues in production.

Would you like assistance in creating a plan to address these TODO items or opening GitHub issues to track them?

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Tests/AblyChatTests/DefaultRoomTests.swift Show resolved Hide resolved
Tests/AblyChatTests/DefaultRoomTests.swift Show resolved Hide resolved
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@lawrence-forooghian lawrence-forooghian force-pushed the 47-integrate-manager-into-existing-operations branch from 03b31b3 to 9e21cba Compare November 11, 2024 13:56
Base automatically changed from implement-previously-attached-check to main November 11, 2024 13:57
@lawrence-forooghian lawrence-forooghian force-pushed the 47-integrate-manager-into-existing-operations branch from 9e21cba to 990bbbe Compare November 11, 2024 18:16
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Actionable comments posted: 1

🧹 Outside diff range and nitpick comments (9)
Sources/AblyChat/Room.swift (1)

Line range hint 32-42: Well-designed actor with proper concurrency control.

Good use of the actor model for thread-safe room management. The generic LifecycleManagerFactory constraint provides excellent type safety and dependency injection.

Consider documenting the thread-safety guarantees provided by the actor, especially regarding the nonisolated properties, to help future maintainers understand the concurrency design decisions.

Tests/AblyChatTests/DefaultRoomTests.swift (3)

31-56: Consider adding more test cases for edge scenarios

The test covers basic success and failure cases, but consider adding test cases for:

  • Concurrent attach calls
  • Timeout scenarios
  • Network disconnection during attach

67-92: Consider testing detach behavior with active subscriptions

While the basic detach functionality is tested, consider adding test cases for:

  • Detaching with active message subscriptions
  • Cleanup of resources after detach

118-138: Enhance status change testing with multiple transitions

Consider enhancing the test to verify:

  • Multiple sequential status changes
  • Status change order preservation
  • Buffer overflow behavior with different buffering policies
Sources/AblyChat/RoomLifecycleManager.swift (4)

60-73: Consider adding documentation to the factory implementation.

While the implementation is clean, adding documentation would improve maintainability by:

  • Explaining the purpose of the default clock
  • Documenting the factory's role in the lifecycle management system
  • Adding parameter documentation for the createManager method

648-650: Consider consolidating duplicate attach operation methods.

The current implementation has separate methods for production and test scenarios. Consider refactoring to reduce duplication:

-internal func performAttachOperation() async throws {
-    try await _performAttachOperation(forcingOperationID: nil)
-}
-
-internal func performAttachOperation(testsOnly_forcingOperationID forcedOperationID: UUID? = nil) async throws {
-    try await _performAttachOperation(forcingOperationID: forcedOperationID)
-}
+internal func performAttachOperation(
+    testsOnly_forcingOperationID forcedOperationID: UUID? = nil
+) async throws {
+    try await _performAttachOperation(forcingOperationID: forcedOperationID)
+}

Also applies to: 652-654


768-770: Consider consolidating duplicate detach operation methods.

Similar to the attach operations, consider refactoring to reduce duplication:

-internal func performDetachOperation() async throws {
-    try await _performDetachOperation(forcingOperationID: nil)
-}
-
-internal func performDetachOperation(testsOnly_forcingOperationID forcedOperationID: UUID? = nil) async throws {
-    try await _performDetachOperation(forcingOperationID: forcedOperationID)
-}
+internal func performDetachOperation(
+    testsOnly_forcingOperationID forcedOperationID: UUID? = nil
+) async throws {
+    try await _performDetachOperation(forcingOperationID: forcedOperationID)
+}

Also applies to: 772-774


Line range hint 1-924: Excellent implementation of the room lifecycle management system!

The implementation is thorough and production-ready with:

  • Comprehensive error handling and state management
  • Strong test support with isolated test-only methods
  • Clear alignment with the CHA-RL specification
  • Proper handling of async operations and Swift concurrency

Consider adding metrics/telemetry for tracking operation durations and failure rates to help monitor the system's health in production.

Sources/AblyChat/DefaultRoomLifecycleContributor.swift (1)

14-16: Implementation of emitDiscontinuity is pending.

The method emitDiscontinuity is currently unimplemented. Since it's important for handling discontinuities in the room lifecycle, consider implementing it or providing a stub implementation to prevent potential issues.

I noticed from the learnings that similar pending implementations are being tracked. Would you like assistance in implementing this method or opening a GitHub issue to track this task?

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Reviewing files that changed from the base of the PR and between 03b31b3 and 990bbbe.

📒 Files selected for processing (12)
  • Sources/AblyChat/ChatClient.swift (1 hunks)
  • Sources/AblyChat/DefaultRoomLifecycleContributor.swift (1 hunks)
  • Sources/AblyChat/Room.swift (6 hunks)
  • Sources/AblyChat/RoomFeature.swift (1 hunks)
  • Sources/AblyChat/RoomLifecycleManager.swift (3 hunks)
  • Sources/AblyChat/Rooms.swift (3 hunks)
  • Sources/AblyChat/SimpleClock.swift (1 hunks)
  • Tests/AblyChatTests/DefaultChatClientTests.swift (1 hunks)
  • Tests/AblyChatTests/DefaultRoomTests.swift (1 hunks)
  • Tests/AblyChatTests/DefaultRoomsTests.swift (3 hunks)
  • Tests/AblyChatTests/Mocks/MockRoomLifecycleManager.swift (1 hunks)
  • Tests/AblyChatTests/Mocks/MockRoomLifecycleManagerFactory.swift (1 hunks)
🚧 Files skipped from review as they are similar to previous changes (8)
  • Sources/AblyChat/ChatClient.swift
  • Sources/AblyChat/RoomFeature.swift
  • Sources/AblyChat/Rooms.swift
  • Sources/AblyChat/SimpleClock.swift
  • Tests/AblyChatTests/DefaultChatClientTests.swift
  • Tests/AblyChatTests/DefaultRoomsTests.swift
  • Tests/AblyChatTests/Mocks/MockRoomLifecycleManager.swift
  • Tests/AblyChatTests/Mocks/MockRoomLifecycleManagerFactory.swift
🧰 Additional context used
📓 Learnings (4)
Sources/AblyChat/DefaultRoomLifecycleContributor.swift (4)
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#67
File: Tests/AblyChatTests/Mocks/MockRoomLifecycleContributorChannel.swift:98-102
Timestamp: 2024-10-08T15:58:47.376Z
Learning: The cleanup of old subscriptions in `MockRoomLifecycleContributorChannel` is acknowledged with a TODO comment and is tracked in issue #36.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#67
File: Tests/AblyChatTests/Mocks/MockRoomLifecycleContributorChannel.swift:98-102
Timestamp: 2024-10-01T19:43:27.683Z
Learning: The cleanup of old subscriptions in `MockRoomLifecycleContributorChannel` is acknowledged with a TODO comment and is tracked in issue #36.
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.
Sources/AblyChat/Room.swift (2)
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#77
File: Sources/AblyChat/Room.swift:14-14
Timestamp: 2024-10-01T21:58:50.246Z
Learning: In the codebase, the term `status` now has a new meaning, and its usage is intentional.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#77
File: Sources/AblyChat/Room.swift:14-14
Timestamp: 2024-10-08T15:58:47.376Z
Learning: In the codebase, the term `status` now has a new meaning, and its usage is intentional.
Sources/AblyChat/RoomLifecycleManager.swift (2)
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.
Tests/AblyChatTests/DefaultRoomTests.swift (7)
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#61
File: Tests/AblyChatTests/DefaultRoomTests.swift:33-34
Timestamp: 2024-10-08T15:58:47.376Z
Learning: In Swift Testing, using `#expect` with `await` may result in less informative failure messages when debugging asynchronous tests.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#61
File: Tests/AblyChatTests/DefaultRoomTests.swift:33-34
Timestamp: 2024-10-08T15:58:49.567Z
Learning: In Swift Testing, using `#expect` with `await` may result in less informative failure messages when debugging asynchronous tests.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#61
File: Tests/AblyChatTests/DefaultRoomTests.swift:33-34
Timestamp: 2024-09-19T18:44:56.819Z
Learning: In Swift Testing, using `#expect` with `await` may result in less informative failure messages when debugging asynchronous tests.
🔇 Additional comments (7)
Sources/AblyChat/Room.swift (4)

Line range hint 22-29: LGTM! Well-structured status change implementation.

The RoomStatusChange struct is well-designed with appropriate Equatable conformance and proper encapsulation.


111-116: LGTM! Clean delegation to lifecycle manager.

The attach/detach operations properly delegate to the lifecycle manager while maintaining the error handling contract.


120-128: Previous access level comments are still applicable.

The implementation of status-related methods is correct, but the access level issues noted in previous comments still need to be addressed.


80-82: Verify the impact of limiting channels to messages feature.

The channel creation has been simplified to only include the messages feature. While this aligns with the current implementation where other features (presence, reactions, typing, occupancy) are not yet implemented, we should ensure this change is intentional.

✅ Verification successful

The channel limitation to messages feature is intentional and correct

The codebase shows that while RoomFeature enum in RoomFeature.swift defines multiple features (messages, presence, reactions, occupancy, typing), the current implementation deliberately initializes only the messages channel. This is consistent with a phased implementation approach, where the messages feature is the core functionality, and other features are defined but not yet activated. The error handling and contributor infrastructure already support these additional features for future implementation.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Check if there are any existing uses of other channel features
rg -l "getChannel.*presence|getChannel.*reactions|getChannel.*typing|getChannel.*occupancy" --type swift

Length of output: 106


Script:

#!/bin/bash
# Let's check for the RoomFeature enum definition and its usage
ast-grep --pattern 'enum RoomFeature'

# Also check for any references to channel features in the codebase
rg -A 5 "RoomFeature" --type swift

Length of output: 5384

Tests/AblyChatTests/DefaultRoomTests.swift (2)

17-17: LGTM: Room initialization with lifecycle manager

The addition of lifecycleManagerFactory parameter aligns with the PR objective of integrating the room lifecycle manager.


142-151: ⚠️ Potential issue

Fix potential type casting issue in Result initializer

The error caught in the catch block might not be of type Failure. Consider adding proper error type handling:

         } catch {
-            self = .failure(error)
+            if let failure = error as? Failure {
+                self = .failure(failure)
+            } else {
+                self = .failure(Failure(error))
+            }
         }

Likely invalid or redundant comment.

Sources/AblyChat/RoomLifecycleManager.swift (1)

43-48: LGTM! Well-designed protocol declarations.

The protocols follow good Swift practices with:

  • Clear separation of concerns between manager and factory
  • Proper use of Swift concurrency with async operations
  • Strong type safety through associated types

Also applies to: 50-58

@lawrence-forooghian lawrence-forooghian force-pushed the 47-integrate-manager-into-existing-operations branch from 990bbbe to cbbb1f8 Compare November 11, 2024 18:35
@lawrence-forooghian

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Actionable comments posted: 1

🧹 Outside diff range and nitpick comments (6)
Sources/AblyChat/ChatClient.swift (2)

Line range hint 27-33: Track unimplemented properties

While the focus is on room lifecycle management, there are still unimplemented properties (connection and clientID) that throw fatalError. Consider:

  1. Adding TODO comments with tracking issues
  2. Implementing these as part of the broader SDK integration
  3. Adding proper error messages indicating when these will be implemented

Would you like me to:

  1. Create tracking issues for these unimplemented properties?
  2. Propose an implementation approach?

Line range hint 13-25: Implementation aligns well with the architecture

The changes effectively integrate the lifecycle manager while maintaining:

  • Proper use of the actor model for concurrency safety
  • Clear separation of concerns
  • Protocol-based design
  • Proper initialization flow

Consider documenting the lifecycle management flow in the README or documentation comments to help other developers understand the new architecture.

Sources/AblyChat/Room.swift (1)

Line range hint 52-69: Consider decomposing the initialization logic

The initialization method handles multiple concerns (realtime setup, channel creation, contributor setup). Consider extracting some of this logic into separate private methods for better maintainability.

 internal init(realtime: RealtimeClient, chatAPI: ChatAPI, roomID: String, options: RoomOptions, logger: InternalLogger, lifecycleManagerFactory: LifecycleManagerFactory) async throws {
-    self.realtime = realtime
-    self.roomID = roomID
-    self.options = options
-    self.logger = logger
-    self.chatAPI = chatAPI
+    try await setupBasicProperties(realtime: realtime, chatAPI: chatAPI, roomID: roomID, options: options, logger: logger)
+    try await setupMessaging(clientId: try validateClientId(realtime))
+}

+private func setupBasicProperties(realtime: RealtimeClient, chatAPI: ChatAPI, roomID: String, options: RoomOptions, logger: InternalLogger) {
+    self.realtime = realtime
+    self.roomID = roomID
+    self.options = options
+    self.logger = logger
+    self.chatAPI = chatAPI
+}

+private func validateClientId(_ realtime: RealtimeClient) throws -> String {
     guard let clientId = realtime.clientId else {
         throw ARTErrorInfo.create(withCode: 40000, message: "Ensure your Realtime instance is initialized with a clientId.")
     }
+    return clientId
+}
Tests/AblyChatTests/DefaultRoomTests.swift (2)

118-138: Consider adding timeout to async test

While the test effectively verifies status change propagation, consider adding a timeout to prevent the test from hanging if the status change is never emitted.

-        let roomStatusChange = try #require(await roomStatusSubscription.first { _ in true })
+        let roomStatusChange = try #require(await roomStatusSubscription.first { _ in true }?.timeout(.seconds(5)))

142-151: Consider handling error type mismatch in Result initializer

The current implementation assumes the caught error is of type Failure. Consider adding proper error type handling.

     init(catching body: () async throws(Failure) -> Success) async {
         do {
             let success = try await body()
             self = .success(success)
         } catch {
-            self = .failure(error)
+            if let failure = error as? Failure {
+                self = .failure(failure)
+            } else {
+                self = .failure(error as! Failure) // Force cast only if we're certain about the error type
+            }
         }
     }
Sources/AblyChat/RoomLifecycleManager.swift (1)

Line range hint 43-780: Consider enhancing documentation for complex state transitions.

The implementation handles complex state management and error scenarios well. However, consider adding:

  1. Sequence diagrams for state transitions
  2. Documentation for error handling paths and retry strategies
  3. Examples of common usage patterns

This would make the codebase more maintainable and easier to understand for new contributors.

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Reviewing files that changed from the base of the PR and between 990bbbe and cbbb1f8.

📒 Files selected for processing (12)
  • Sources/AblyChat/ChatClient.swift (1 hunks)
  • Sources/AblyChat/DefaultRoomLifecycleContributor.swift (1 hunks)
  • Sources/AblyChat/Room.swift (6 hunks)
  • Sources/AblyChat/RoomFeature.swift (1 hunks)
  • Sources/AblyChat/RoomLifecycleManager.swift (3 hunks)
  • Sources/AblyChat/Rooms.swift (3 hunks)
  • Sources/AblyChat/SimpleClock.swift (1 hunks)
  • Tests/AblyChatTests/DefaultChatClientTests.swift (1 hunks)
  • Tests/AblyChatTests/DefaultRoomTests.swift (1 hunks)
  • Tests/AblyChatTests/DefaultRoomsTests.swift (3 hunks)
  • Tests/AblyChatTests/Mocks/MockRoomLifecycleManager.swift (1 hunks)
  • Tests/AblyChatTests/Mocks/MockRoomLifecycleManagerFactory.swift (1 hunks)
🚧 Files skipped from review as they are similar to previous changes (8)
  • Sources/AblyChat/DefaultRoomLifecycleContributor.swift
  • Sources/AblyChat/RoomFeature.swift
  • Sources/AblyChat/Rooms.swift
  • Sources/AblyChat/SimpleClock.swift
  • Tests/AblyChatTests/DefaultChatClientTests.swift
  • Tests/AblyChatTests/DefaultRoomsTests.swift
  • Tests/AblyChatTests/Mocks/MockRoomLifecycleManager.swift
  • Tests/AblyChatTests/Mocks/MockRoomLifecycleManagerFactory.swift
🧰 Additional context used
📓 Learnings (3)
Sources/AblyChat/Room.swift (2)
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#77
File: Sources/AblyChat/Room.swift:14-14
Timestamp: 2024-10-01T21:58:50.246Z
Learning: In the codebase, the term `status` now has a new meaning, and its usage is intentional.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#77
File: Sources/AblyChat/Room.swift:14-14
Timestamp: 2024-10-08T15:58:47.376Z
Learning: In the codebase, the term `status` now has a new meaning, and its usage is intentional.
Sources/AblyChat/RoomLifecycleManager.swift (2)
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.
Tests/AblyChatTests/DefaultRoomTests.swift (9)
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: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: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#61
File: Tests/AblyChatTests/DefaultRoomTests.swift:33-34
Timestamp: 2024-10-08T15:58:47.376Z
Learning: In Swift Testing, using `#expect` with `await` may result in less informative failure messages when debugging asynchronous tests.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#61
File: Tests/AblyChatTests/DefaultRoomTests.swift:33-34
Timestamp: 2024-10-08T15:58:49.567Z
Learning: In Swift Testing, using `#expect` with `await` may result in less informative failure messages when debugging asynchronous tests.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#61
File: Tests/AblyChatTests/DefaultRoomTests.swift:33-34
Timestamp: 2024-09-19T18:44:56.819Z
Learning: In Swift Testing, using `#expect` with `await` may result in less informative failure messages when debugging asynchronous tests.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#54
File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:499-504
Timestamp: 2024-10-01T12:47:28.179Z
Learning: In test closures, parameters like `callCount` may be used to track invocation counts correctly across invocations.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#54
File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:499-504
Timestamp: 2024-10-08T15:58:47.376Z
Learning: In test closures, parameters like `callCount` may be used to track invocation counts correctly across invocations.
🔇 Additional comments (13)
Sources/AblyChat/ChatClient.swift (1)

23-24: Consider implementing dependency injection for the lifecycle manager factory

The current implementation hardcodes DefaultRoomLifecycleManagerFactory, which could make testing more difficult and reduces flexibility. Consider:

  1. Adding the factory as a parameter to the initializer
  2. Using protocol-based dependency injection

Here's a suggested implementation:

- public init(realtime: RealtimeClient, clientOptions: ClientOptions?) {
+ public init(
+     realtime: RealtimeClient,
+     clientOptions: ClientOptions?,
+     lifecycleManagerFactory: RoomLifecycleManagerFactory = DefaultRoomLifecycleManagerFactory()
+ ) {
    self.realtime = realtime
    self.clientOptions = clientOptions ?? .init()
    logger = DefaultInternalLogger(logHandler: self.clientOptions.logHandler, logLevel: self.clientOptions.logLevel)
-   let roomLifecycleManagerFactory = DefaultRoomLifecycleManagerFactory()
    rooms = DefaultRooms(realtime: realtime, clientOptions: self.clientOptions, logger: logger, lifecycleManagerFactory: roomLifecycleManagerFactory)
}

Let's verify the implementation of the lifecycle manager factory:

Sources/AblyChat/Room.swift (3)

Line range hint 22-30: LGTM! Well-structured status change type

The RoomStatusChange struct is well-designed with appropriate protocol conformance (Sendable, Equatable) and access levels.


Line range hint 32-51: Well-designed actor with proper concurrency controls

Good use of the actor model for thread-safe room management. The generic constraint on LifecycleManagerFactory ensures type safety while allowing flexibility in implementation.


120-127: Access level issues need to be addressed

The onStatusChange method and status property should be marked as public to match the protocol requirements. This issue was previously identified and still needs to be fixed.

Additionally, verify the lifecycle manager integration:

#!/bin/bash
# Search for lifecycle manager usage patterns
ast-grep --pattern 'func performAttachOperation()' 
ast-grep --pattern 'func performDetachOperation()'
Tests/AblyChatTests/DefaultRoomTests.swift (4)

17-17: LGTM: Lifecycle manager integration

The addition of the lifecycleManagerFactory parameter aligns with the PR's objective of integrating the room lifecycle manager.


25-56: LGTM: Comprehensive attach test implementation

The parameterized test effectively verifies the room's attach behavior with both success and failure scenarios, properly delegating to the lifecycle manager.


61-92: LGTM: Well-structured detach test implementation

The test effectively mirrors the attach test structure, maintaining consistency in testing approach while verifying the detach functionality.


98-114: LGTM: Clear status delegation test

The test effectively verifies that the room's status properly reflects the lifecycle manager's status.

Sources/AblyChat/RoomLifecycleManager.swift (5)

43-48: LGTM! Well-designed protocol for room lifecycle management.

The protocol provides a clean interface with async/await support for room lifecycle operations.


50-58: LGTM! Well-structured factory protocol.

The factory pattern is well implemented with clear type constraints and dependency injection support.


60-73: LGTM! Clean factory implementation.

The factory implementation properly handles dependencies and follows Swift best practices.


648-654: LGTM! Well-structured attach operation implementation.

The implementation follows good practices:

  • Clear separation between public and test interfaces
  • Proper delegation to private implementation
  • Consistent error handling

Also applies to: 660-660


768-774: LGTM! Well-structured detach operation implementation.

The implementation maintains consistency with the attach operation pattern and provides good testability support.

Also applies to: 780-780

Sources/AblyChat/Room.swift Show resolved Hide resolved
Replace the existing temporary implementations of room attach / detach /
status with those provided by the room lifecycle manager.

Part of #47.
@lawrence-forooghian lawrence-forooghian force-pushed the 47-integrate-manager-into-existing-operations branch from cbbb1f8 to ac92127 Compare November 11, 2024 23:56
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Actionable comments posted: 1

🧹 Outside diff range and nitpick comments (5)
Sources/AblyChat/Room.swift (3)

Line range hint 52-69: Consider adding documentation for complex initialization

The initialization process involves multiple steps and dependencies. Consider adding documentation to explain:

  • Required dependencies and their purposes
  • The initialization flow
  • Constraints on the LifecycleManagerFactory generic parameter

Add documentation like this:

+/// Creates a new DefaultRoom instance.
+/// - Parameters:
+///   - realtime: The Ably Realtime client instance
+///   - chatAPI: The Chat API client
+///   - roomID: Unique identifier for the room
+///   - options: Configuration options for the room
+///   - logger: Logger instance for debugging
+///   - lifecycleManagerFactory: Factory for creating the room's lifecycle manager
+/// - Throws: An error if the Realtime client lacks a clientId
 internal init(realtime: RealtimeClient, chatAPI: ChatAPI, roomID: String, options: RoomOptions, logger: InternalLogger, lifecycleManagerFactory: LifecycleManagerFactory) async throws {

80-92: Add error handling for channel creation

The channel creation process assumes success but could potentially fail. Consider adding error handling:

  1. Validate channel creation success
  2. Handle potential initialization failures
  3. Add logging for debugging purposes

Consider this approach:

 private static func createChannels(roomID: String, realtime: RealtimeClient) -> [RoomFeature: RealtimeChannelProtocol] {
+    logger.debug("Creating channels for room \(roomID)")
     .init(uniqueKeysWithValues: [RoomFeature.messages].map { feature in
-        let channel = realtime.getChannel(feature.channelNameForRoomID(roomID))
+        guard let channel = realtime.getChannel(feature.channelNameForRoomID(roomID)) else {
+            logger.error("Failed to create channel for feature \(feature)")
+            throw RoomError.channelCreationFailed(feature: feature)
+        }
         return (feature, channel)
     })
 }

111-127: Enhance error handling in room operations

The attach and detach operations could benefit from more robust error handling and logging:

Consider this enhancement:

 public func attach() async throws {
+    logger.debug("Attaching room \(roomID)")
+    do {
         try await lifecycleManager.performAttachOperation()
+        logger.debug("Successfully attached room \(roomID)")
+    } catch {
+        logger.error("Failed to attach room \(roomID): \(error)")
+        throw RoomError.attachFailed(underlying: error)
+    }
 }

 public func detach() async throws {
+    logger.debug("Detaching room \(roomID)")
+    do {
         try await lifecycleManager.performDetachOperation()
+        logger.debug("Successfully detached room \(roomID)")
+    } catch {
+        logger.error("Failed to detach room \(roomID): \(error)")
+        throw RoomError.detachFailed(underlying: error)
+    }
 }
Tests/AblyChatTests/DefaultRoomTests.swift (1)

118-138: Consider adding more comprehensive status change scenarios

While the current test verifies basic status change propagation, consider adding test cases for:

  • Multiple consecutive status changes
  • Edge cases like rapid status transitions
  • Error scenarios in status propagation
Sources/AblyChat/RoomLifecycleManager.swift (1)

768-774: Consider reducing code duplication with attach operations.

The detach operation methods follow the same pattern as attach operations. Consider extracting the common pattern into a reusable function to reduce duplication.

+private func performOperation(
+    operation: String,
+    forcingOperationID: UUID?,
+    implementation: (UUID?) async throws -> Void
+) async throws {
+    try await implementation(forcingOperationID)
+}

-internal func performDetachOperation() async throws {
-    try await _performDetachOperation(forcingOperationID: nil)
-}
+internal func performDetachOperation() async throws {
+    try await performOperation(
+        operation: "detach",
+        forcingOperationID: nil,
+        implementation: _performDetachOperation
+    )
+}

-internal func performDetachOperation(testsOnly_forcingOperationID forcedOperationID: UUID? = nil) async throws {
-    try await _performDetachOperation(forcingOperationID: forcedOperationID)
-}
+internal func performDetachOperation(testsOnly_forcingOperationID forcedOperationID: UUID? = nil) async throws {
+    try await performOperation(
+        operation: "detach",
+        forcingOperationID: forcedOperationID,
+        implementation: _performDetachOperation
+    )
+}
📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Reviewing files that changed from the base of the PR and between cbbb1f8 and ac92127.

📒 Files selected for processing (12)
  • Sources/AblyChat/ChatClient.swift (1 hunks)
  • Sources/AblyChat/DefaultRoomLifecycleContributor.swift (1 hunks)
  • Sources/AblyChat/Room.swift (6 hunks)
  • Sources/AblyChat/RoomFeature.swift (1 hunks)
  • Sources/AblyChat/RoomLifecycleManager.swift (3 hunks)
  • Sources/AblyChat/Rooms.swift (3 hunks)
  • Sources/AblyChat/SimpleClock.swift (1 hunks)
  • Tests/AblyChatTests/DefaultChatClientTests.swift (1 hunks)
  • Tests/AblyChatTests/DefaultRoomTests.swift (1 hunks)
  • Tests/AblyChatTests/DefaultRoomsTests.swift (3 hunks)
  • Tests/AblyChatTests/Mocks/MockRoomLifecycleManager.swift (1 hunks)
  • Tests/AblyChatTests/Mocks/MockRoomLifecycleManagerFactory.swift (1 hunks)
🚧 Files skipped from review as they are similar to previous changes (9)
  • Sources/AblyChat/ChatClient.swift
  • Sources/AblyChat/DefaultRoomLifecycleContributor.swift
  • Sources/AblyChat/RoomFeature.swift
  • Sources/AblyChat/Rooms.swift
  • Sources/AblyChat/SimpleClock.swift
  • Tests/AblyChatTests/DefaultChatClientTests.swift
  • Tests/AblyChatTests/DefaultRoomsTests.swift
  • Tests/AblyChatTests/Mocks/MockRoomLifecycleManager.swift
  • Tests/AblyChatTests/Mocks/MockRoomLifecycleManagerFactory.swift
🧰 Additional context used
📓 Learnings (3)
Sources/AblyChat/Room.swift (2)
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#77
File: Sources/AblyChat/Room.swift:14-14
Timestamp: 2024-11-10T17:12:32.395Z
Learning: In the codebase, the term `status` now has a new meaning, and its usage is intentional.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#77
File: Sources/AblyChat/Room.swift:14-14
Timestamp: 2024-11-10T17:12:32.395Z
Learning: In the codebase, the term `status` now has a new meaning, and its usage is intentional.
Sources/AblyChat/RoomLifecycleManager.swift (2)
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#54
File: Sources/AblyChat/RoomLifecycleManager.swift:0-0
Timestamp: 2024-11-10T17:12:32.395Z
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: 2024-11-10T17:12:32.395Z
Learning: In `RoomLifecycleManager`, handling of unexpected contributor states after attach failure will be addressed in issue #49.
Tests/AblyChatTests/DefaultRoomTests.swift (6)
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#54
File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:627-631
Timestamp: 2024-11-10T17:12:36.565Z
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: 2024-11-10T17:12:32.395Z
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: 2024-11-10T17:12:32.395Z
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: 2024-11-10T17:12:32.395Z
Learning: In Swift Testing, test method names do not need to start with `test`.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#61
File: Tests/AblyChatTests/DefaultRoomTests.swift:33-34
Timestamp: 2024-11-10T17:12:32.395Z
Learning: In Swift Testing, using `#expect` with `await` may result in less informative failure messages when debugging asynchronous tests.
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#61
File: Tests/AblyChatTests/DefaultRoomTests.swift:33-34
Timestamp: 2024-11-10T17:12:36.565Z
Learning: In Swift Testing, using `#expect` with `await` may result in less informative failure messages when debugging asynchronous tests.
🔇 Additional comments (5)
Sources/AblyChat/Room.swift (1)

Line range hint 22-30: LGTM: Well-structured status change tracking

The RoomStatusChange struct is well-designed with appropriate protocol conformances (Equatable, Sendable) and access levels.

Tests/AblyChatTests/DefaultRoomTests.swift (2)

17-17: LGTM: Room initialization with lifecycle manager

The addition of lifecycleManagerFactory parameter aligns with the PR objective of integrating the lifecycle manager into room operations.


25-56: Well-structured parameterized test for attach operation

The test effectively verifies both success and failure scenarios of the attach operation using parameterized testing. The Given-When-Then structure provides clear test organization.

Sources/AblyChat/RoomLifecycleManager.swift (2)

648-654: LGTM! Clean implementation of attach operations.

The public methods are well-structured with clear separation between production and test-specific functionality.


660-660: Verify error handling in concurrent scenarios.

While the implementation is thorough, there might be edge cases in concurrent error handling that need verification. The TODO comment on line 49 indicates awareness of this, but we should verify the current implementation's behavior.

Also applies to: 780-780

✅ Verification successful

Let me analyze the concurrent error handling patterns further by checking the implementation details around these channel operations.


Based on the gathered information, I can now provide the final response:

Error handling in concurrent scenarios is properly implemented

The implementation shows a robust approach to concurrent error handling:

  • Channel operations (attach/detach) have proper error catching with state verification
  • Retry mechanisms are implemented for failed operations with appropriate logging
  • Error states are properly tracked through contributorAnnotations
  • The only gap is task cancellation handling, which is already tracked in issue Decide how our SDK should interact with Swift Task cancellation #29
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Search for potential concurrent error handling patterns in the codebase

# Look for similar concurrent error handling patterns
ast-grep --pattern 'try await $_.channel.$_()' -A 5

# Search for related error handling discussions in comments
rg -i "concurrent.*error|race.*condition|thread.*safe" -g "*.swift"

Length of output: 4353


Script:

#!/bin/bash
# Look for retry mechanisms and state handling
ast-grep --pattern 'while true {
  $$$
  try await $$$
  $$$
}'

# Check for task cancellation handling
rg "Task.cancel|isCancelled" -g "*.swift" -A 3

# Look for synchronization mechanisms
ast-grep --pattern '@Synchronized'

Length of output: 411

Tests/AblyChatTests/DefaultRoomTests.swift Show resolved Hide resolved
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@umair-ably umair-ably left a comment

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nice work on the tests

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@maratal maratal left a comment

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I'm curious why rooms can't be their own lifecycle managers? Why separated object for just that?

Tests/AblyChatTests/DefaultRoomTests.swift Show resolved Hide resolved
@lawrence-forooghian
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I'm curious why rooms can't be their own lifecycle managers? Why separated object for just that?

It's a good question; I think that I just did it because I’d been hearing so much about the JS SDK’s “room lifecycle manager” that when I came to implement it in Swift I just created a class of the same name without thinking much about it. We could revisit in the future, but I don't really feel like trying to do that now.

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