[ECO-5904] Disable implicit attach #129
Conversation
None of this stuff is public in JS, from where it was copied.
We shouldn’t be mutating the channel options that are passed in to `getChannel(…)` (violates caller’s expectations), and ably-cocoa offers us no mechanism for copying an ARTRealtimeChannelOptions object.
WalkthroughThe changes introduce a new internal struct Changes
Assessment against linked issues
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Actionable comments posted: 2
🧹 Outside diff range and nitpick comments (5)
Sources/AblyChat/Version.swift (1)
7-7: Consider using a version management systemWhile changing visibility to
internalaligns with the PR objectives, consider:
- Using a version management tool or build system to inject version numbers
- Adding documentation about version update process
Tests/AblyChatTests/Mocks/MockChannels.swift (1)
Line range hint
47-55: Usedeferfor safer mutex unlocking in releaseArguments getterFor consistency with other mutex handling improvements, consider using
deferhere as well.var releaseArguments: [String] { let result: [String] mutex.lock() + defer { mutex.unlock() } result = _releaseArguments - mutex.unlock() return result }Sources/AblyChat/Dependencies.swift (1)
24-45: LGTM! Consider adding Equatable conformance.The introduction of
RealtimeChannelOptionswith value semantics is a good design choice. The implementation is clean and well-documented.Consider adding
Equatableconformance to make the struct easier to test:-internal struct RealtimeChannelOptions { +internal struct RealtimeChannelOptions: Equatable { internal var modes: ARTChannelMode internal var params: [String: String]? internal var attachOnSubscribe: BoolTests/AblyChatTests/DefaultRoomTests.swift (2)
8-24: LGTM! Test implements CHA-GP2a specification.The test effectively verifies that
attachOnSubscribeis disabled when fetching channels. Good use of mocks and clear test structure.Consider adding the following test cases to make it more comprehensive:
- Test with an empty channel list
- Test with channels that have different attachment states
- Test error scenarios when fetching channels
6-7: Consider adding section documentation.The "Fetching channels" section could benefit from a brief comment explaining its purpose and relationship to the CHA-GP2a specification.
// MARK: - Fetching channels +// Tests related to channel fetching behavior and configuration. +// CHA-GP2a: Ensures that implicit attach is disabled when fetching channels.
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📒 Files selected for processing (5)
Sources/AblyChat/Dependencies.swift(1 hunks)Sources/AblyChat/Room.swift(1 hunks)Sources/AblyChat/Version.swift(1 hunks)Tests/AblyChatTests/DefaultRoomTests.swift(1 hunks)Tests/AblyChatTests/Mocks/MockChannels.swift(1 hunks)
🔇 Additional comments (9)
Sources/AblyChat/Version.swift (3)
9-9: LGTM!
The internal visibility and format are appropriate for the agent string.
Line range hint 3-3: Verify the status of issue #76
The TODO comment indicates this is a temporary implementation copied from chat-js. Let's verify if this approach is still valid or needs updating.
11-11: Verify the integration of defaultChannelParams
The change from defaultChannelOptions to defaultChannelParams looks good, but let's verify its usage across the codebase.
✅ Verification successful
Based on the search results, I can now generate the final response:
Integration of defaultChannelParams is correctly implemented
The defaultChannelParams constant is properly integrated and used in the codebase:
- It's used in
Dependencies.swiftwithin thegetChannelfunction to merge the default params with any channel-specific options - The implementation ensures the agent string is consistently applied to all channel initializations
- The old
defaultChannelOptionshas been completely removed with no remaining references
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Check usage of defaultChannelParams and old defaultChannelOptions
echo "Checking usage of new defaultChannelParams:"
rg "defaultChannelParams" -A 2
echo "Checking for any remaining references to old defaultChannelOptions:"
rg "defaultChannelOptions"
Length of output: 585
Script:
#!/bin/bash
# Let's check the context around the usage in Dependencies.swift
echo "Checking context of defaultChannelParams usage in Dependencies.swift:"
rg "defaultChannelParams" Dependencies.swift -B 5 -A 5
# Let's also check for any channel-related code to understand the integration
echo -e "\nChecking for channel-related code:"
ast-grep --pattern 'func $_ ($_: ARTRealtimeChannel$$$) {
$$$
}'
Length of output: 416
Script:
#!/bin/bash
# Let's check the correct path for Dependencies.swift and its content
echo "Finding Dependencies.swift location:"
fd Dependencies.swift
echo -e "\nChecking context of defaultChannelParams usage:"
rg "defaultChannelParams" -B 5 -A 5
# Let's also look for any channel-related initialization or usage
echo -e "\nChecking for channel initialization patterns:"
rg "channel|Channel" -B 2 -A 2
Length of output: 175040
Tests/AblyChatTests/Mocks/MockChannels.swift (2)
8-9: LGTM! Well-documented properties with appropriate access control.
The properties are correctly marked as private(set) with clear documentation about synchronization requirements.
16-34: Verify test coverage for implicit attach behavior
The mock now tracks channel options, which is crucial for verifying the PR's objective of disabling implicit attach.
✅ Verification successful
Mock implementation correctly supports testing of implicit attach behavior
The verification shows that:
- The mock is being used effectively in
DefaultRoomTeststo verify that channels are created withattachOnSubscribeset to false - Test coverage exists specifically for this behavior, with assertions checking that all channel instances have the correct option set
- The implementation aligns with the PR's objective (CHA-GP2a) to disable implicit attach
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Verify that tests are using this mock to check implicit attach behavior
# Look for test cases verifying attachOnSubscribe option
rg -l "attachOnSubscribe.*false" Tests/
Length of output: 84
Script:
#!/bin/bash
# Check the actual test implementation to verify how attachOnSubscribe is being tested
rg -A 10 "attachOnSubscribe.*false" Tests/AblyChatTests/DefaultRoomTests.swift
Length of output: 664
Script:
#!/bin/bash
# Look for any other related test cases that might be using the mock channels
rg -l "MockChannels" Tests/
Length of output: 204
Script:
#!/bin/bash
# Check if there are any other tests verifying channel options
rg "options.*ARTRealtimeChannelOptions" Tests/
Length of output: 660
Script:
#!/bin/bash
# Check the full test implementation in DefaultRoomTests to understand the test coverage
rg -B 5 -A 5 "channelsGetArguments" Tests/AblyChatTests/DefaultRoomTests.swift
Length of output: 775
Script:
#!/bin/bash
# Check if there are any other test files that verify attachOnSubscribe behavior
rg -l "attachOnSubscribe" Tests/
Length of output: 75
Sources/AblyChat/Dependencies.swift (2)
49-56: LGTM! Clean implementation of parameter handling.
The parameter merging logic is well-implemented and the use of the new RealtimeChannelOptions type improves type safety.
59-62: Verify the impact of disabling implicit attach.
The implementation correctly addresses CHA-GP2a by setting attachOnSubscribe = false. However, we should verify that this change doesn't break existing functionality.
Let's check for any direct dependencies on the attach behavior:
✅ Verification successful
Based on the test results, I can now generate the final response as we have sufficient information to verify the impact of disabling implicit attach.
Setting attachOnSubscribe = false is safe and verified by tests
The codebase has comprehensive test coverage for the attach behavior:
DefaultRoomTests.disablesImplicitAttach()explicitly verifies thatattachOnSubscribeis set to false for all channels- The lifecycle management tests verify proper handling of manual attach operations
- Integration tests demonstrate the correct attach sequence with explicit attach calls
- No tests rely on implicit attach behavior
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Search for tests or code that might depend on implicit attach behavior
rg -l "attachOnSubscribe|attach\(\)" --type swift
# Look for potential issues in test files
rg "attach" --type swift -g "*Tests.swift" -C 3
Length of output: 105948
Sources/AblyChat/Room.swift (1)
Line range hint 141-163: Fix inconsistent usage of channel options types and implement implicit attach disable
There are several issues in this code segment:
- The presence block creates a new
ARTRealtimeChannelOptionsinstance that shadows the outerRealtimeChannelOptionsvariable, causing the presence mode settings to be lost. - The implementation is missing the requirement to disable implicit attach as specified in the PR objective (ECO-5904).
Apply this diff to fix the issues:
var channelOptions = RealtimeChannelOptions()
+ channelOptions.attachOnSubscribe = false // Disable implicit attach as per ECO-5904
// channel setup for presence and occupancy
if feature == .presence {
- let channelOptions = ARTRealtimeChannelOptions()
let presenceOptions = roomOptions.presence
if presenceOptions?.enter ?? false {
channelOptions.modes.insert(.presence)
}
if presenceOptions?.subscribe ?? false {
channelOptions.modes.insert(.presenceSubscribe)
}
} else if feature == .occupancy {
channelOptions.params = ["occupancy": "metrics"]
}Let's verify that we're not missing any other places where implicit attach needs to be disabled:
Tests/AblyChatTests/DefaultRoomTests.swift (1)
17-18: Verify DefaultRoom implementation of CHA-GP2a.
While the test looks good, let's verify that the actual implementation in DefaultRoom correctly sets attachOnSubscribe = false.
✅ Verification successful
Let me search for more specific information about where the channel options are set.
Implementation of CHA-GP2a (disable implicit attach) is correctly verified
The implementation is correctly setting attachOnSubscribe = false in Dependencies.swift with an explicit comment "CHA-GP2a". This setting is applied to all channel options through the getChannel extension method, ensuring that implicit attach is disabled for all channels in the room.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Find DefaultRoom implementation and verify attachOnSubscribe setting
# Find DefaultRoom implementation
echo "Searching for DefaultRoom implementation..."
rg -l "class DefaultRoom" --type swift
# Look for channel creation with attachOnSubscribe
echo "Checking channel creation options..."
rg -A 5 "getChannel|channels\.get" --type swift
Length of output: 2147
Script:
#!/bin/bash
# Search for channelOptions initialization and DefaultRoom implementation
echo "Searching for channelOptions in DefaultRoom..."
rg -B 5 -A 10 "channelOptions" --type swift
# Look for RealtimeChannelOptions or related configuration
echo "Searching for RealtimeChannelOptions configuration..."
rg -B 2 -A 2 "RealtimeChannelOptions|attachOnSubscribe" --type swift
Length of output: 11197
Implements spec point CHA-GP2a.
Resolves #102.
Summary by CodeRabbit
Release Notes
New Features
RealtimeChannelOptionsfor enhanced channel configuration.Roomprotocol to utilize the new channel options structure.Bug Fixes
Roomprotocol.Tests
Chores
Versionmodule for better encapsulation.