[ECO-5375] Define internal liveobject data models #1087
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""" WalkthroughThe changes introduce new internal data models for LiveObjects, update plugin and adapter interfaces to use a new Changes
Sequence Diagram(s)sequenceDiagram
participant Client
participant DefaultLiveObjectsPlugin
participant DefaultLiveObjects
participant LiveObjectsAdapter
participant AblyRealtime
Client->>DefaultLiveObjectsPlugin: handle(msg: ProtocolMessage)
DefaultLiveObjectsPlugin->>DefaultLiveObjects: handle(msg)
DefaultLiveObjects->>LiveObjectsAdapter: setChannelSerial(channelName, channelSerial)
LiveObjectsAdapter->>AblyRealtime: update channelSerial for channel
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live-objects/src/main/kotlin/io/ably/lib/objects/DefaultLiveObjectsPlugin.kt
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Actionable comments posted: 6
🧹 Nitpick comments (3)
live-objects/src/main/kotlin/io/ably/lib/objects/DefaultLiveObjects.kt (1)
50-58: LGTM! Proper protocol message handling with minor suggestion.The
handlemethod correctly implements RTL15b specification with proper null safety and action type checking. The logging and delegation to the adapter are appropriate.Consider adding exception handling around the
adapter.setChannelSerialcall to prevent potential failures from propagating:fun handle(msg: ProtocolMessage) { // RTL15b msg.channelSerial?.let { if (msg.action === ProtocolMessage.Action.`object`) { Log.v(tag, "Setting channel serial for channelName: $channelName, value: ${msg.channelSerial}") - adapter.setChannelSerial(channelName, msg.channelSerial) + try { + adapter.setChannelSerial(channelName, msg.channelSerial) + } catch (e: Exception) { + Log.e(tag, "Failed to set channel serial", e) + } } } }lib/src/main/java/io/ably/lib/objects/LiveObjectsAdapter.java (1)
23-29: Consider improving error handling.The current implementation only logs an error when a channel is not found, but this might warrant stronger error handling depending on the use case.
Consider whether this scenario should throw an exception instead of just logging:
@Override public void setChannelSerial(@NotNull String channelName, @NotNull String channelSerial) { if (ably.channels.containsKey(channelName)) { ably.channels.get(channelName).properties.channelSerial = channelSerial; } else { - Log.e(TAG, "setChannelSerial(): channel not found: " + channelName); + Log.e(TAG, "setChannelSerial(): channel not found: " + channelName); + // Consider: throw new AblyException("Channel not found: " + channelName, ErrorInfo.UNKNOWN_ERROR_CODE, HttpStatusCode.BAD_REQUEST); } }live-objects/src/main/kotlin/io/ably/lib/objects/ObjectMessage.kt (1)
3-3: Consider using ByteArray instead of java.nio.Buffer.For Kotlin projects,
ByteArrayis typically more idiomatic thanjava.nio.Bufferand provides better interoperability.-import java.nio.BufferAnd update the usage in line 193:
- val initialValue: Buffer? = null, + val initialValue: ByteArray? = null,
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lib/src/main/java/io/ably/lib/objects/LiveObjectsAdapter.java(1 hunks)lib/src/main/java/io/ably/lib/realtime/AblyRealtime.java(2 hunks)lib/src/main/java/io/ably/lib/transport/ConnectionManager.java(1 hunks)live-objects/src/main/kotlin/io/ably/lib/objects/DefaultLiveObjects.kt(2 hunks)live-objects/src/main/kotlin/io/ably/lib/objects/DefaultLiveObjectsPlugin.kt(1 hunks)live-objects/src/main/kotlin/io/ably/lib/objects/Helpers.kt(1 hunks)live-objects/src/main/kotlin/io/ably/lib/objects/ObjectMessage.kt(1 hunks)
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🧬 Code Graph Analysis (1)
lib/src/main/java/io/ably/lib/realtime/AblyRealtime.java (1)
live-objects/src/main/kotlin/io/ably/lib/objects/DefaultLiveObjectsPlugin.kt (1)
adapter(6-30)
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🔇 Additional comments (23)
lib/src/main/java/io/ably/lib/realtime/AblyRealtime.java (4)
9-9: LGTM: Clean import refactoring.The import change from
PluginConnectionAdaptertoLiveObjectsAdapteraligns with the architectural refactoring to use a more specific adapter interface for LiveObjects functionality.
190-193:Details
✅ Verification successful
Well-structured adapter initialization.
The changes correctly instantiate the new
LiveObjectsAdapter.Adapterand pass it to the plugin constructor. The adapter delegation pattern withthis(AblyRealtime instance) is appropriate.Verify that the
DefaultLiveObjectsPluginconstructor signature matches the expectedLiveObjectsAdapterparameter:
🏁 Script executed:
#!/bin/bash # Verify DefaultLiveObjectsPlugin constructor signature ast-grep --pattern $'class DefaultLiveObjectsPlugin { $$$ DefaultLiveObjectsPlugin($ADAPTER) { $$$ } $$$ }'Length of output: 120
This will show the class declaration and the constructor parameters so we can confirm it accepts a LiveObjectsAdapter.
🏁 Script executed:
#!/bin/bash # Locate DefaultLiveObjectsPlugin class and its constructor signature rg "class DefaultLiveObjectsPlugin" -A 5 -nLength of output: 853
Plugin constructor signature verified
All checks confirm that
DefaultLiveObjectsPluginaccepts aLiveObjectsAdapterand you’re correctly passing the newLiveObjectsAdapter.Adapter(this)instance:
- In live-objects/src/main/kotlin/io/ably/lib/objects/DefaultLiveObjectsPlugin.kt the constructor is defined as
DefaultLiveObjectsPlugin(private val adapter: LiveObjectsAdapter).- In lib/src/main/java/io/ably/lib/realtime/AblyRealtime.java you instantiate and pass
new LiveObjectsAdapter.Adapter(this).No further changes needed.
9-9: LGTM! Clean import update for the adapter refactoring.The import change correctly reflects the transition from
PluginConnectionAdapterto the newLiveObjectsAdapterinterface.
190-193: LGTM! Proper adapter pattern implementation.The code correctly instantiates the new
LiveObjectsAdapter.Adapterwith the currentAblyRealtimeinstance and passes it to the plugin constructor. The dependency injection approach is clean and follows the adapter pattern properly.lib/src/main/java/io/ably/lib/transport/ConnectionManager.java (2)
39-39: LGTM: Interface removal aligns with adapter refactoring.Removing the
PluginConnectionAdapterimplementation fromConnectionManageris consistent with the architectural change to use the newLiveObjectsAdapter.Adapterpattern. The responsibility for plugin communication is now properly delegated to the specific adapter implementation.
39-39: LGTM! Clean separation of concerns.Removing the
PluginConnectionAdapterimplementation fromConnectionManageris a good architectural improvement. The adapter functionality has been properly moved to the newLiveObjectsAdapter, which simplifies the ConnectionManager's responsibilities and follows the single responsibility principle.live-objects/src/main/kotlin/io/ably/lib/objects/DefaultLiveObjects.kt (3)
4-7: LGTM: Constructor and imports updated for new adapter pattern.The import additions and constructor parameter change to
LiveObjectsAdapteralign perfectly with the architectural refactoring seen across other files.
50-58: Excellent implementation of RTL15b specification.The
handlemethod correctly implements the channel serial update logic:
- Proper null-safe access to
channelSerial- Correctly filters for
objectaction type- Appropriate logging for debugging
- Clean delegation to adapter for serial management
This follows the RTL15b specification for handling channel serials in LiveObjects.
4-8: LGTM! Proper imports and constructor refactoring.The new imports for
ProtocolMessageandLogare appropriate for the added functionality. The constructor parameter change toLiveObjectsAdaptercorrectly aligns with the adapter pattern refactoring, and thetagproperty follows Kotlin logging conventions.live-objects/src/main/kotlin/io/ably/lib/objects/Helpers.kt (4)
8-24: Excellent coroutine integration for LiveObjectsAdapter.The
sendAsyncextension function provides clean coroutine support:
- Properly uses
CompletableDeferredto bridge callback-based API- Handles both success (
onSuccess) and error (onError) cases- Catches synchronous exceptions from
sendmethod- Clean suspend function signature for easy integration
This enables seamless async/await patterns in Kotlin code using the LiveObjectsAdapter.
26-31: Well-designed MessageFormat enum.The enum provides a clean abstraction for message formats:
- Clear naming with MSGPACK and JSON options
- Proper string value association
- Overridden
toString()for easy serialization- Internal visibility appropriate for package-level usage
8-24: LGTM! Excellent coroutine wrapper implementation.The
sendAsyncextension function properly bridges callback-based async operations with Kotlin coroutines. The implementation correctly:
- Uses
CompletableDeferred<Unit>for coordination- Handles both synchronous exceptions (in try-catch) and asynchronous errors (in completion listener)
- Converts
ErrorInfotoExceptionappropriately- Awaits the deferred result to suspend until completion
This provides a clean coroutine-friendly API for the LiveObjects adapter.
26-31: LGTM! Clean enum implementation.The
MessageFormatenum is well-defined with appropriate string values and a propertoString()override. The internal visibility is appropriate for this utility enum.live-objects/src/main/kotlin/io/ably/lib/objects/DefaultLiveObjectsPlugin.kt (4)
6-17: LGTM! Clean adapter refactoring with proper message handling.The refactoring to use
LiveObjectsAdapterinstead ofPluginConnectionAdapteris well-implemented. Thehandlemethod correctly forwards protocol messages to the appropriateDefaultLiveObjectsinstance based on the channel name, maintaining proper separation of concerns.
6-6: LGTM: Clean architecture refactoring.The change from
PluginConnectionAdaptertoLiveObjectsAdapteraligns well with the new architecture. This creates a more focused interface for LiveObjects communication.
11-11: LGTM: Correct adapter usage.The
DefaultLiveObjectsinstance creation properly uses the new adapter interface, maintaining consistency with the architectural changes.
14-17: LGTM: Proper message forwarding implementation.The handle method correctly extracts the channel name and forwards messages to the appropriate LiveObjects instance. The null-safe call operator ensures no exceptions if the channel doesn't exist.
lib/src/main/java/io/ably/lib/objects/LiveObjectsAdapter.java (2)
11-35: LGTM! Well-designed adapter interface with proper error handling.The
LiveObjectsAdapterinterface provides a clean abstraction for LiveObjects communication. TheAdapterimplementation includes appropriate error handling with thecontainsKeycheck before accessing channel properties, and proper error logging when channels are not found. The delegation to the connection manager with reliable delivery (true) is also correct.
11-12: LGTM: Well-designed interface extension.The interface design is clean and extends
PluginConnectionAdapterappropriately while adding the specificsetChannelSerialfunctionality needed for LiveObjects.live-objects/src/main/kotlin/io/ably/lib/objects/ObjectMessage.kt (4)
5-317: Excellent data model design with comprehensive spec coverage.The data models are well-structured with proper separation of concerns, comprehensive spec references (OOP2, MAP2, etc.), and appropriate nullable/non-nullable field designations. The mutually exclusive relationship between
operationandobjectfields inObjectMessageis clearly documented and properly represents the protocol requirements.
9-16: LGTM: Well-defined operation actions.The enum follows the spec (OOP2) correctly and provides a comprehensive set of operation types for object manipulation.
140-199: LGTM: Comprehensive operation structure.The
ObjectOperationclass provides a well-designed structure that covers all the specified operation types with appropriate payloads. The spec references are helpful for understanding the purpose of each field.
22-24:Details
❓ Verification inconclusive
Verify if MapSemantics enum is complete.
Currently only LWW (Last Writer Wins) semantics is defined. Confirm if this is intentional or if additional semantics will be added later.
🏁 Script executed:
#!/bin/bash # Description: Check if there are references to other map semantics in the codebase # Expected: Find any references to semantics other than LWW rg -i "semantics|LWW|first.*win|conflict.*resol" --type kotlin --type javaLength of output: 654
Confirm MapSemantics completeness: only LWW is defined
We ran a repository-wide search for any other map semantics and found only the single
LWW(0)entry inMapSemantics.• If Last-Writer-Wins is the only conflict-resolution model you intend to support, consider adding a comment or TODO in
ObjectMessage.ktclarifying that no other semantics are currently available.
• If additional semantics are planned (e.g., first-write-wins, custom resolution), please updateMapSemanticswith those values now or note them in the backlog.
live-objects/src/main/kotlin/io/ably/lib/objects/ObjectMessage.kt
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Actionable comments posted: 0
🧹 Nitpick comments (1)
lib/src/main/java/io/ably/lib/objects/Adapter.java (1)
12-12: Fix TAG field to use correct class name.The TAG field should use the actual class name for more accurate logging.
- private static final String TAG = LiveObjectsAdapter.class.getName(); + private static final String TAG = Adapter.class.getName();
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lib/src/main/java/io/ably/lib/objects/Adapter.java(1 hunks)lib/src/main/java/io/ably/lib/objects/LiveObjectsAdapter.java(2 hunks)lib/src/main/java/io/ably/lib/objects/LiveObjectsPlugin.java(3 hunks)lib/src/main/java/io/ably/lib/plugins/PluginInstance.java(0 hunks)lib/src/main/java/io/ably/lib/realtime/AblyRealtime.java(2 hunks)live-objects/src/main/kotlin/io/ably/lib/objects/ObjectMessage.kt(1 hunks)
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- lib/src/main/java/io/ably/lib/plugins/PluginInstance.java
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- lib/src/main/java/io/ably/lib/realtime/AblyRealtime.java
- live-objects/src/main/kotlin/io/ably/lib/objects/ObjectMessage.kt
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🧠 Learnings (1)
lib/src/main/java/io/ably/lib/objects/LiveObjectsAdapter.java (1)
Learnt from: sacOO7
PR: ably/ably-java#1087
File: lib/src/main/java/io/ably/lib/objects/LiveObjectsAdapter.java:32-34
Timestamp: 2025-05-27T12:11:25.084Z
Learning: In LiveObjects implementation (lib/src/main/java/io/ably/lib/objects/LiveObjectsAdapter.java), the send method intentionally hardcodes queueEvents to true rather than respecting ably.options.queueMessages. This is because LiveObjects requires reliable message delivery to ensure proper state synchronization and acknowledgment, unlike other realtime components that may allow configurable queuing behavior.
🧬 Code Graph Analysis (1)
lib/src/main/java/io/ably/lib/objects/LiveObjectsAdapter.java (2)
lib/src/main/java/io/ably/lib/types/ProtocolMessage.java (1)
ProtocolMessage(29-318)live-objects/src/main/kotlin/io/ably/lib/objects/DefaultLiveObjects.kt (1)
channelName(7-64)
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- GitHub Check: check (29)
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- GitHub Check: check (19)
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🔇 Additional comments (6)
lib/src/main/java/io/ably/lib/objects/LiveObjectsPlugin.java (1)
11-11: LGTM: Interface simplification improves clarity.The removal of
PluginInstanceextension and direct declaration ofhandle()anddispose()methods makes the interface more self-contained and explicit about its dependencies. This aligns with interface segregation principles and reduces coupling between plugin interfaces.Also applies to: 24-31, 42-45
lib/src/main/java/io/ably/lib/objects/Adapter.java (3)
10-16: LGTM: Clean adapter implementation with proper dependency injection.The constructor properly encapsulates the
AblyRealtimedependency, and the class serves as a clear bridge between the LiveObjects system and the Ably realtime connection.
18-25: Good error handling for missing channels.The implementation properly checks for channel existence before setting the serial and logs an appropriate error message when the channel is not found. This prevents potential null pointer exceptions and provides useful debugging information.
27-31: Proper implementation with documented rationale.The send method correctly implements the reliable queuing behavior with a clear comment explaining why LiveObjects always queues messages for state synchronization. This aligns with the previous discussions and learnings about reliable message delivery requirements.
lib/src/main/java/io/ably/lib/objects/LiveObjectsAdapter.java (2)
1-1: LGTM: Improved interface naming and package organization.Renaming from
PluginConnectionAdaptertoLiveObjectsAdapterand moving to theio.ably.lib.objectspackage better reflects the specific purpose of this interface and improves code organization by grouping LiveObjects-related components.Also applies to: 8-8
20-25: Good addition of channel serial management.The new
setChannelSerialmethod provides the necessary functionality for LiveObjects to manage channel serials for state synchronization. The@NotNullannotations improve type safety and make the contract explicit.
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🧹 Nitpick comments (1)
live-objects/src/main/kotlin/io/ably/lib/objects/Helpers.kt (1)
33-43: Review null handling in equals method.The
equalsimplementation has a potential issue with null handling. Currently, if bothdataandother.dataare null, the method returnsfalsedue to the== truecheck on line 37.Consider this improvement for more intuitive null handling:
override fun equals(other: Any?): Boolean { if (this === other) return true if (other !is Binary) return false - return data?.contentEquals(other.data) == true + return if (data == null && other.data == null) true + else data?.contentEquals(other.data) == true }This ensures that two
Binaryinstances with null data are considered equal.
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lib/src/main/java/io/ably/lib/objects/Adapter.java(1 hunks)lib/src/main/java/io/ably/lib/objects/LiveObjectsAdapter.java(2 hunks)lib/src/main/java/io/ably/lib/objects/LiveObjectsPlugin.java(3 hunks)lib/src/main/java/io/ably/lib/plugins/PluginInstance.java(0 hunks)lib/src/main/java/io/ably/lib/realtime/AblyRealtime.java(2 hunks)live-objects/src/main/kotlin/io/ably/lib/objects/Helpers.kt(1 hunks)live-objects/src/main/kotlin/io/ably/lib/objects/ObjectMessage.kt(1 hunks)
💤 Files with no reviewable changes (1)
- lib/src/main/java/io/ably/lib/plugins/PluginInstance.java
🚧 Files skipped from review as they are similar to previous changes (4)
- lib/src/main/java/io/ably/lib/objects/LiveObjectsPlugin.java
- lib/src/main/java/io/ably/lib/realtime/AblyRealtime.java
- lib/src/main/java/io/ably/lib/objects/LiveObjectsAdapter.java
- lib/src/main/java/io/ably/lib/objects/Adapter.java
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- GitHub Check: check (21)
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- GitHub Check: check-realtime-okhttp
- GitHub Check: check-rest-okhttp
- GitHub Check: check (19)
- GitHub Check: check-rest
- GitHub Check: check-realtime
- GitHub Check: check (24)
- GitHub Check: check
🔇 Additional comments (20)
live-objects/src/main/kotlin/io/ably/lib/objects/Helpers.kt (5)
8-24: Well-implemented coroutine wrapper with proper error handling.The
sendAsyncextension function correctly wraps the callback-basedsendmethod into a suspend function. The implementation properly handles both success and error cases, catches synchronous exceptions, and usesCompletableDeferredappropriately.
26-31: Clean enum implementation with proper toString override.The
ProtocolMessageFormatenum is well-structured with meaningful string values and a propertoString()override that returns the associated value rather than the enum name.
33-43: Correct implementation of equals and hashCode for ByteArray wrapper.The
Binaryclass properly implementsequalsandhashCodefor wrapping nullableByteArray. The use ofcontentEqualsandcontentHashCodeis correct for byte array comparison, and the null handling is appropriate.
8-24: Well-implemented coroutine extension.The
sendAsyncextension function properly bridges the callback-basedsendmethod to a suspend function usingCompletableDeferred. The error handling correctly convertsErrorInfotoExceptionand catches synchronous exceptions.
26-31: Clean enum design with proper string representation.The
ProtocolMessageFormatenum is well-designed with meaningful constants and a propertoString()implementation for string serialization.live-objects/src/main/kotlin/io/ably/lib/objects/ObjectMessage.kt (15)
7-14: Well-structured enum with clear action codes.The
ObjectOperationActionenum uses proper PascalCase naming (as addressed in past feedback) and provides clear integer codes for each operation type. The structure is clean and follows Kotlin conventions.
28-46: Flexible data model for object values.The
ObjectDataclass provides a well-designed union-type structure that can represent object references, encoded values, or concrete values. The nullable fields allow for flexible usage patterns while maintaining type safety.
138-197: Comprehensive operation model with proper type usage.The
ObjectOperationclass effectively models all operation types with appropriate payload fields. The use ofBinaryandProtocolMessageFormatfrom the same package (Helpers.kt) is correct and doesn't require imports. All fields are properly immutable as addressed in previous feedback.
249-315: Well-designed message structure following specifications.The
ObjectMessageclass provides a comprehensive model for object messages with proper mutual exclusivity betweenoperationandobjectStatefields. The extensive documentation with spec references enhances maintainability. The immutable design (usingval) aligns with best practices for data models.
7-14: Well-designed operation action enum.The
ObjectOperationActionenum properly uses PascalCase naming and provides clear integer codes for protocol operations. The comprehensive set of actions covers the expected LiveObjects operations.
20-22: Consistent enum design for conflict resolution.The
MapSemanticsenum follows the same well-established pattern as other enums in the file. The singleLWW(Last Writer Wins) value suggests room for future conflict resolution strategies.
28-46: Well-structured data class for object values.The
ObjectDataclass properly models different value types (references, encoded data, concrete values) with clear separation of concerns. The use of immutablevalfields and comprehensive documentation enhances maintainability.
52-64: Focused data class for map operations.The
MapOpclass has a clean design with a required key and optional data field, making it suitable for both set and remove operations on maps.
70-76: Simple and effective counter operation design.The
CounterOpclass appropriately uses aDoubletype for the amount field, allowing both integer and decimal operations while maintaining simplicity.
82-102: Well-designed map entry with temporal metadata.The
MapEntryclass effectively models map entries with tombstone deletion markers and timeserial ordering, providing the necessary metadata for conflict resolution.
108-120: Clean map object representation.The
ObjectMapclass properly encapsulates conflict resolution semantics and key-value entries, providing a complete map abstraction.
126-132: Simple counter object design.The
ObjectCounterclass maintains a focused design with just the essential count value, appropriate for its single responsibility.
138-197: Comprehensive operation model with proper field organization.The
ObjectOperationclass effectively models all operation types with appropriate optional fields for different operation payloads. The use ofBinaryforinitialValueand the immutable design enhance reliability.
203-243: Complete object state representation.The
ObjectStateclass properly models object snapshots with site timeserials for distributed consistency and separate fields for different object types.
249-315: Well-structured message envelope with mutual exclusivity.The
ObjectMessageclass provides a comprehensive message envelope with proper metadata fields. The mutual exclusivity betweenoperationandobjectStatefields is well-documented and appropriate for the protocol design.
1. Updated enum ObjectOperationAction with PascalCase values 2. Created separate file for adapter that extends LiveObjectsAdapter 3. Added custom Binary type to handle ByteArray values
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Actionable comments posted: 1
🧹 Nitpick comments (1)
live-objects/src/main/kotlin/io/ably/lib/objects/ObjectMessage.kt (1)
249-315: Comprehensive message class with excellent documentation.The
ObjectMessageclass is well-designed with appropriate optional fields and comprehensive documentation. The mutual exclusivity betweenoperationandobjectStateis clearly documented, and the fallback behavior for missing fields is well-explained.Consider using a sealed class hierarchy to enforce the mutual exclusivity of
operationandobjectStateat compile time:internal sealed class ObjectMessage { abstract val id: String? abstract val timestamp: Long? // ... other common fields data class OperationMessage( override val id: String? = null, // ... other fields val operation: ObjectOperation ) : ObjectMessage() data class StateMessage( override val id: String? = null, // ... other fields val objectState: ObjectState ) : ObjectMessage() }
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lib/src/main/java/io/ably/lib/objects/Adapter.java(1 hunks)lib/src/main/java/io/ably/lib/objects/LiveObjectsAdapter.java(2 hunks)lib/src/main/java/io/ably/lib/objects/LiveObjectsPlugin.java(3 hunks)lib/src/main/java/io/ably/lib/plugins/PluginInstance.java(0 hunks)lib/src/main/java/io/ably/lib/realtime/AblyRealtime.java(2 hunks)live-objects/src/main/kotlin/io/ably/lib/objects/Helpers.kt(1 hunks)live-objects/src/main/kotlin/io/ably/lib/objects/ObjectMessage.kt(1 hunks)
💤 Files with no reviewable changes (1)
- lib/src/main/java/io/ably/lib/plugins/PluginInstance.java
🚧 Files skipped from review as they are similar to previous changes (5)
- lib/src/main/java/io/ably/lib/objects/LiveObjectsPlugin.java
- lib/src/main/java/io/ably/lib/realtime/AblyRealtime.java
- lib/src/main/java/io/ably/lib/objects/LiveObjectsAdapter.java
- lib/src/main/java/io/ably/lib/objects/Adapter.java
- live-objects/src/main/kotlin/io/ably/lib/objects/Helpers.kt
🔇 Additional comments (8)
live-objects/src/main/kotlin/io/ably/lib/objects/ObjectMessage.kt (8)
7-14: Well-structured enum following Kotlin conventions.The
ObjectOperationActionenum properly uses PascalCase naming and provides integer codes for serialization. The comprehensive coverage of map operations, counter operations, and object deletion aligns well with the specification.
20-22: Clean enum design ready for future extension.The
MapSemanticsenum is well-structured with proper naming conventions. While it currently only supports LWW (Last Write Wins), the design allows for easy addition of other conflict resolution strategies in the future.
28-46: Well-designed data class with appropriate flexibility.The
ObjectDataclass properly balances flexibility and structure. The use ofAny?for thevaluefield allows support for various data types (string, number, boolean, binary) as specified in the protocol, which is appropriate for this messaging context.
52-64: Clean and focused data class design.The
MapOpclass has a clear, minimal design that properly represents map operations with a required key and optional data payload.
70-76: Appropriate design for counter operations.The
CounterOpclass correctly usesDoublefor the amount field, which allows both positive and negative values to support increment and decrement operations.
82-102: Comprehensive design for distributed map entries.The
MapEntryclass properly handles the complexities of distributed systems with tombstone markers for deletions and timeserial for operation ordering. The documentation clearly explains the behavior for missing timeserial values.
108-132: Well-structured object representation classes.Both
ObjectMapandObjectCounterhave appropriate designs. The optional fields inObjectMapsupport incremental updates, and the consistent use ofDoubleacross counter-related classes maintains type consistency.
203-243: Excellent object state representation.The
ObjectStateclass properly distinguishes between required fields (objectId, siteTimeserials, tombstone) and optional contextual information. The design effectively supports both map and counter object types.
ttypic
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ttypic
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lgtm, added small comment to update callback -> suspend transformation
…CancellableCoroutine
Fixed #1086
Summary by CodeRabbit
New Features
Refactor
Bug Fixes
Documentation