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3.1.0-beta05 - Performance Benchmarks #115

Merged
merged 36 commits into from
Dec 8, 2024
Merged

3.1.0-beta05 - Performance Benchmarks #115

merged 36 commits into from
Dec 8, 2024

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Nek-12
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@Nek-12 Nek-12 commented Nov 28, 2024

Summary by CodeRabbit

  • New Features

    • Introduced new issue templates for bug reports, feature requests, and questions to streamline user submissions.
    • Added a new configuration for running benchmarks in the project.
    • Enhanced the debugging workflow with new jobs for macOS, Linux, and Windows.
    • Added a new GitHub Actions workflow for automated benchmarking.
  • Bug Fixes

    • Updated UUID generation methods throughout the project to utilize the Kotlin standard library.
  • Documentation

    • Improved documentation for various components, including state management and plugin configurations.
  • Chores

    • Updated dependencies and plugin configurations across multiple Gradle files for consistency and functionality.

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coderabbitai bot commented Nov 28, 2024

📝 Walkthrough
📝 Walkthrough

Walkthrough

The pull request introduces significant changes to the project’s issue templates and workflow configurations. Existing bug report and feature request templates in markdown format have been replaced with YAML counterparts, enhancing structure and clarity. Additionally, several workflow files have been updated to improve modularity, with triggers changed to workflow_call and new outputs added. The project also sees the introduction of new benchmark configurations and classes, alongside updates to UUID handling across various files, reflecting a shift to using Kotlin's built-in UUID functionality.

Changes

File Path Change Summary
.github/ISSUE_TEMPLATE/bug_report.md Removed.
.github/ISSUE_TEMPLATE/bug_report.yml New bug report template added with structured fields for reporting issues.
.github/ISSUE_TEMPLATE/feature_request.md Removed.
.github/ISSUE_TEMPLATE/feature_request.yml New feature request template added with structured fields for requesting features.
.github/ISSUE_TEMPLATE/question.yml New template for asking questions added.
.github/ISSUE_TEMPLATE/something-else.md Removed.
.github/workflows/desktop-linux.yml Workflow trigger changed to workflow_call, job renamed to publish, outputs added for debugger-url and sample-url.
.github/workflows/desktop-macos.yml Workflow trigger changed to workflow_call, job renamed to publish, outputs added for debugger-url and sample-url.
.github/workflows/desktop-win.yml Workflow trigger changed to workflow_call, job renamed to publish, outputs added for debugger-url and sample-url.
.github/workflows/publish.yml New jobs for debugging added, and a new step for publishing a plugin version introduced.
.idea/runConfigurations/All_benchmarks.xml New configuration for running benchmarks added.
android/build.gradle.kts Plugin declaration updated for Kotlin Multiplatform.
benchmarks/build.gradle.kts New Gradle Kotlin DSL configuration for benchmarking added.
benchmarks/src/jvmMain/... Multiple new benchmark classes and configurations added, including BenchmarkDefaults, Main, and various benchmark implementations.
build.gradle.kts Plugin management updated, including removal of atomicfu configuration.
buildSrc/src/main/kotlin/Config.kt Constant postfix updated and new entry added to optIns list.
buildSrc/src/main/kotlin/ConfigureMultiplatform.kt New optional parameter explicitApi added to configureMultiplatform function.
compose/build.gradle.kts Plugin ID updated for Kotlin Multiplatform.
core/... Various modifications across multiple files, including updates to state management, introduction of new interfaces and classes, and UUID handling changes.
debugger/... Multiple updates reflecting changes in UUID handling and plugin configurations, including removal of the old UUID serializer.
metrics/build.gradle.kts New configuration for a Kotlin Multiplatform project with Android support established.

Poem

🐰 In the garden of code, changes bloom bright,
Templates refreshed, workflows take flight.
UUIDs now dance in Kotlin's embrace,
Bugs and features find their new place.
With each little hop, our project will grow,
A joyful leap forward, let progress flow! 🌼


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coderabbitai bot previously approved these changes Nov 29, 2024
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coderabbitai bot previously approved these changes Nov 29, 2024
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Nek-12 commented Dec 5, 2024

Results before optimization:

Benchmark                                                        Mode  Cnt   Score    Error  Units
p.r.f.b.s.atomic.AtomicFMVIBenchmark.benchmark                   avgt  100  16.529 ±  1.582  ms/op
p.r.f.b.s.channelbased.ChannelTraditionalMVIBenchmark.benchmark  avgt  100   0.501 ±  0.037  ms/op
p.r.f.b.s.fluxo.FluxoIntentBenchmark.benchmark                   avgt  100   2.231 ±  0.046  ms/op
p.r.f.b.s.fluxo.FluxoStartStopBenchmark.benchmark                avgt  100   0.002 ±  0.001  ms/op
p.r.f.b.s.optimized.OptimizedFMVIBenchmark.benchmark             avgt  100   2.568 ±  0.252  ms/op
p.r.f.b.s.optimized.OptimizedFMVIStartStopBenchmark.benchmark    avgt  100   0.008 ±  0.001  ms/op
p.r.f.b.s.traditional.TraditionalMVIBenchmark.benchmark          avgt  100   0.294 ±  0.017  ms/op

where 1 operation is: Create, start, reduce 10000 intents, stop.

100 Iterations, 10 warmups, MacBook M1 Pro 2021, 32 GB RAM

0.5 ms / 10k intents as a gold standard (channel)
2.56 ms / 10k current optimized setup (already subtracted start and stops)

Atomic 6.43 times slower than non-atomic
Atomic 33 times slower than simple channel

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Nek-12 commented Dec 5, 2024

Results after updateStateImmediate optimization:

Benchmark                                                        Mode  Cnt   Score    Error  Units
p.r.f.b.s.atomic.AtomicFMVIBenchmark.benchmark                   avgt  100  12.257 ±  1.716  ms/op
p.r.f.b.s.channelbased.ChannelTraditionalMVIBenchmark.benchmark  avgt  100   0.438 ±  0.012  ms/op
p.r.f.b.s.fluxo.FluxoIntentBenchmark.benchmark                   avgt  100   8.527 ±  0.101  ms/op
p.r.f.b.s.fluxo.FluxoStartStopBenchmark.benchmark                avgt  100   0.002 ±  0.001  ms/op
p.r.f.b.s.optimized.OptimizedFMVIBenchmark.benchmark             avgt  100   2.325 ±  0.051  ms/op
p.r.f.b.s.optimized.OptimizedFMVIStartStopBenchmark.benchmark    avgt  100   0.008 ±  0.001  ms/op
p.r.f.b.s.traditional.TraditionalMVIBenchmark.benchmark          avgt  100   0.257 ±  0.004  ms/op

2.316 ms /10k ops (start/stop subtracted)

Atomic 5.27 times slower than non-atomic
Atomic 27 times slower than simple channel

@Nek-12 Nek-12 linked an issue Dec 5, 2024 that may be closed by this pull request
@Nek-12 Nek-12 changed the title 3.1.0-beta05 3.1.0-beta05 - Performance Benchmarks Dec 7, 2024
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Nek-12 commented Dec 7, 2024

image

Minimal callstack depth achieved with one lambda invocation. Optimized state accessors result.

Minimal reduction callstack time 12 000 ms (18%) per sample

7500 ms overhead of compareAndSet
3000 ms self time of reduce plugin chain invocation - 1100 ms for state copy and state getter overhead volatile prop.

Total about 1900 ms for a single plugin per sample if my calculation is correct.

48% for channel machinery
28% on yield (not part of benchmark)
18% on store machinery.

Total results - about 1900 / 12 000 = 15% overhead per plugin compared to direct invocation of state flow update() operation.

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Nek-12 commented Dec 7, 2024

Atomic store benchmarks before:
image

  1. Visible overhead of boxing of the context element. We should reuse the context element!
  2. Mutex overhead is minimal, but reentrant mutex context switch is a humongous overhead (more than 88% of cpu time!)

@Nek-12 Nek-12 linked an issue Dec 8, 2024 that may be closed by this pull request
@Nek-12 Nek-12 linked an issue Dec 8, 2024 that may be closed by this pull request
@Nek-12 Nek-12 marked this pull request as ready for review December 8, 2024 13:57
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Actionable comments posted: 24

🧹 Outside diff range and nitpick comments (50)
debugger/server/src/commonMain/kotlin/pro/respawn/flowmvi/debugger/server/ui/screens/storedetails/StoreDetailsContract.kt (2)

Line range hint 20-26: Consider documenting UUID serialization strategy

The DisplayingStore data class uses the new Kotlin UUID implementation for its id field. Since this is part of the store's state, which might be serialized/deserialized, consider documenting the UUID format expectations.

Add documentation about UUID handling:

    data class DisplayingStore(
+       /** Unique identifier for the store. Uses Kotlin's built-in UUID implementation. */
        val id: Uuid,
        val name: String?,
        val connected: Boolean,
        val eventLog: ImmutableList<ServerEventEntry>,
        val focusedEvent: FocusedEvent? = null,
    ) : StoreDetailsState

Line range hint 11-26: Performance impact assessment

The switch to Kotlin's built-in UUID implementation in this contract file should have minimal impact on the performance benchmarks presented in this PR, as:

  1. This is a UI contract file, not in the critical path of the benchmarked operations
  2. Both UUID implementations have similar performance characteristics
debugger/server/src/commonMain/kotlin/pro/respawn/flowmvi/debugger/server/ui/screens/storedetails/StoreDetailsContainer.kt (1)

Line range hint 35-35: Consider documenting the UUID migration rationale.

Given that this is part of performance-focused changes, consider adding a comment explaining why Kotlin's UUID implementation was chosen over the third-party one.

internal class StoreDetailsContainer(
+   // Using Kotlin's built-in UUID for improved performance and reduced dependencies
    private val id: Uuid,
    configuration: StoreConfiguration,

Also applies to: 36-36

debugger/server/src/commonMain/kotlin/pro/respawn/flowmvi/debugger/server/navigation/destination/Destination.kt (1)

Line range hint 1-28: Document UUID implementation change

Since this is a potentially breaking change in UUID implementation, consider:

  1. Adding a code comment explaining the transition
  2. Updating relevant documentation
  3. Adding a migration note if needed

Add a comment at the top of the file:

+// Note: Using Kotlin's built-in UUID implementation for improved performance and standardization
+// Migration from com.benasher44.uuid.Uuid to kotlin.uuid.Uuid in version 3.1.0-beta05
 package pro.respawn.flowmvi.debugger.server.navigation.destination
benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/optimized/OptimizedStore.kt (1)

16-27: Consider using a fixed channel capacity for benchmarks

While using Channel.UNLIMITED provides maximum throughput by avoiding backpressure, it could lead to unbounded memory growth during benchmarks. Consider using a fixed capacity that matches your intentsPerIteration to ensure consistent memory usage across benchmark runs.

.github/workflows/desktop-macos.yml (1)

59-76: Consider the trade-offs of disabling artifact compression

Setting compression-level: 0 will result in faster uploads but larger storage usage. For binary files like executables that are already compressed, this is a reasonable choice.

Note: Monitor your GitHub Actions storage usage, as uncompressed artifacts may impact storage quotas more quickly.

.github/workflows/desktop-win.yml (1)

60-76: Consider signing Windows executables

Windows executables should be signed to prevent security warnings. Consider adding a code signing step before uploading artifacts.

Example implementation:

- name: Sign Windows executable
  env:
    CERTIFICATE: ${{ secrets.WINDOWS_CERTIFICATE }}
    PASSWORD: ${{ secrets.CERTIFICATE_PASSWORD }}
  run: |
    # Add code signing steps here
    # Example: signtool sign /f certificate.pfx /p %PASSWORD% path/to/executable
.github/workflows/publish.yml (1)

Line range hint 47-49: Consider pinning the Xcode version

Using latest for Xcode version could lead to unexpected issues if a new version is released. Consider pinning to a specific version for reproducible builds.

 - uses: maxim-lobanov/setup-xcode@v1
   with:
-    xcode-version: latest
+    xcode-version: '14.3.1'
core/src/jvmTest/kotlin/pro/respawn/flowmvi/util/TestStore.kt (2)

38-41: Verify atomic state strategy configuration matches benchmark requirements

The configuration uses non-reentrant atomic state updates, which aligns with the PR's focus on comparing atomic vs non-atomic operations. However, disabling parallel intents might not reflect real-world usage patterns.

Consider adding benchmark scenarios with:

  1. Both reentrant and non-reentrant atomic operations
  2. Parallel and sequential intent processing

Line range hint 31-47: Review benchmark methodology completeness

The test store configuration provides a good foundation for benchmarking, but consider enhancing the methodology:

  1. Document the overhead of each configuration option
  2. Create separate store configurations for different benchmark scenarios
  3. Consider adding warm-up cycles to eliminate JVM optimization effects
  4. Add baseline measurements without any additional configurations for comparison

This will help provide more accurate and comprehensive benchmark results.

.github/ISSUE_TEMPLATE/feature_request.yml (1)

2-3: Add placeholder text to guide users.

The title field could benefit from a more descriptive placeholder to guide users in writing effective feature requests.

 description: Request a new feature
-title: "🚀: "
+title: "🚀: [Feature Request] "
.github/ISSUE_TEMPLATE/question.yml (1)

8-11: Add placeholder text to guide question format.

The textarea could benefit from placeholder text to help users structure their questions effectively.

   - type: textarea
+    attributes:
+      label: Question Details
     description: What do you want to know?
+    placeholder: |
+      Please provide:
+      1. Context of your question
+      2. What you've already tried
+      3. Relevant code snippets (if applicable)
     validations:
       required: true
.github/ISSUE_TEMPLATE/bug_report.yml (1)

8-17: Add placeholders for version inputs.

The version input fields should include placeholders to show the expected format.

   - type: input
     attributes:
       label: FlowMVI Version
+      placeholder: "e.g., 3.1.0-beta05"
     validations:
       required: true
   - type: input
     attributes:
       label: Kotlin Version
+      placeholder: "e.g., 1.9.0"
     validations:
       required: true
core/src/commonMain/kotlin/pro/respawn/flowmvi/plugins/ResetStatePlugin.kt (4)

12-12: Follow Kotlin naming conventions for constants.

Consider renaming the constant to follow Kotlin's naming convention for constants:

-private const val Name = "ResetStatePlugin"
+private const val PLUGIN_NAME = "ResetStatePlugin"

14-22: Enhance documentation with thread-safety and performance notes.

Consider adding the following details to the documentation:

  • Thread-safety implications of state reset
  • Performance characteristics, especially in concurrent scenarios
  • Impact on subscribers when state is reset

30-35: Enhance extension function documentation.

Consider expanding the documentation to include:

  • Example usage in a store builder chain
  • Performance characteristics from the benchmarks
  • Note about installation order recommendation (as mentioned in the plugin's docs)
 /**
  * Install a new [resetStatePlugin].
+ *
+ * Example usage:
+ * ```
+ * val store = store<State, Intent, Action> {
+ *     resetStateOnStop() // Install early in the chain
+ *     // ... other configurations
+ * }
+ * ```
+ *
+ * Performance note: Benefits from optimized updateStateImmediate implementation,
+ * with minimal overhead during store shutdown.
  **/

1-35: Consider documenting performance characteristics.

Given this PR's focus on performance benchmarks, consider:

  1. Adding benchmark results specific to the reset operation in the documentation
  2. Documenting any overhead introduced by this plugin in the store lifecycle
  3. Providing guidance on when to use this plugin vs. manual state management

This would help users make informed decisions about using this plugin in performance-critical applications.

core/src/commonMain/kotlin/pro/respawn/flowmvi/api/ImmediateStateReceiver.kt (2)

11-11: Update Documentation to Reflect Extended Interface

The ImmediateStateReceiver now extends StateProvider<S>, but the class-level KDoc does not mention this change. Consider updating the documentation to reflect the inheritance and explain how it affects the usage of this interface.


14-19: Provide Detailed Documentation for compareAndSet Method

The compareAndSet(old: S, new: S): Boolean method is a crucial addition to the interface. To enhance clarity, consider expanding the KDoc to include:

  • A thorough explanation of how the method works.
  • Use cases and examples demonstrating its proper usage.
  • Any potential side effects or considerations when using this method.
core/src/commonMain/kotlin/pro/respawn/flowmvi/util/ReentrantLock.kt (1)

22-26: Add Exception Message to RecursiveStateTransactionException

When throwing RecursiveStateTransactionException without a message or cause, debugging can become challenging. Consider providing a clear exception message to aid in troubleshooting.

Apply this diff to include an exception message:

-coroutineContext[key] != null -> throw RecursiveStateTransactionException(null)
+coroutineContext[key] != null -> throw RecursiveStateTransactionException("Recursive state transaction detected.")
benchmarks/build.gradle.kts (1)

36-38: Use Version Catalog for Dependency Versions

The fluxo library version is hardcoded. To maintain consistency and ease version management, consider using the version catalog or a project property.

Apply this diff to use the version catalog:

-val fluxo = "0.1-2306082-SNAPSHOT"
-//noinspection UseTomlInstead
-commonMainImplementation("io.github.fluxo-kt:fluxo-core:$fluxo")
+commonMainImplementation(libs.fluxo.core)

Ensure that fluxo.core is defined in your libs.versions.toml file.

core/src/commonMain/kotlin/pro/respawn/flowmvi/api/StateStrategy.kt (2)

30-30: Clarify Risks Associated with Immediate Strategy

The documentation outlines the risks of using the Immediate strategy. To emphasize the potential issues, consider adding warnings or highlighting the consequences in a more prominent way.


45-47: Enhance Warning About Deadlocks in Atomic Strategy

The note about potential deadlocks when reentrant is set to false is important. Consider making this warning more prominent in the documentation, perhaps by using all caps or warning annotations.

Apply this diff to emphasize the warning:

 *   **HERE BE DRAGONS** if you do that, as using the state within another state transaction will
 *   cause a **permanent deadlock**.
+ *   @warning Setting `reentrant` to `false` may lead to deadlocks!
core/src/commonMain/kotlin/pro/respawn/flowmvi/modules/StateModule.kt (2)

35-39: Avoid shadowing property names with local variables

In useState, the local variable chain shadows the class property chain. This may cause confusion and reduce code clarity. Consider renaming the local variable to avoid shadowing.

Apply this diff to rename the local variable:

-        val chain = chain ?: return@withLock updateStateImmediate { transform() }
+        val currentChain = chain ?: return@withLock updateStateImmediate { transform() }
-        updateStateImmediate { chain(this, transform()) ?: this }
+        updateStateImmediate { currentChain(this, transform()) ?: this }

41-46: Clarify condition precedence in withLock function

The order of conditions in the withLock function may lead to unexpected behavior if reentrant and debuggable are both true. Currently, reentrant takes precedence due to its position. Consider explicitly documenting the intended precedence or reordering the conditions to match the desired logic.

core/src/commonMain/kotlin/pro/respawn/flowmvi/api/ImmutableStore.kt (1)

14-16: Update documentation to reflect states property change

The ImmutableStore interface now uses states: StateFlow<S> instead of state: S. Update the interface documentation to explain the use of StateFlow for state propagation and how subscribers should interact with it.

Consider adding the following to the documentation:

/**
 * The current state of the store exposed as a [StateFlow].
 * Subscribers can collect this flow to receive state updates.
 */
override val states: StateFlow<S>
core/src/commonMain/kotlin/pro/respawn/flowmvi/modules/RecoverModule.kt (1)

53-68: Simplify catch function logic

The catch function can be simplified by reducing nesting and handling exceptions more directly. This improves readability and maintainability.

Apply this diff to simplify the catch function:

-        recover: RecoverModule<S, I, A>,
+        recover: RecoverModule<S, I, A>,
-        block: suspend () -> R
-    ): R? = try {
+    ): R? = coroutineScope {
-        block()
-    } catch (expected: Exception) {
+        when {
-            ...
+            // existing exception handling logic
core/src/commonMain/kotlin/pro/respawn/flowmvi/modules/IntentModule.kt (1)

69-70: Avoid variable naming that conflicts with function names

The variable unhandled in line 69 shadows the function unhandled used in line 70, which can cause confusion and reduce code readability. Consider renaming the variable to avoid naming conflicts.

Proposed change:

-            val unhandled = onIntent(intent) ?: return
-            onUndeliveredIntent?.invoke(unhandled) ?: unhandled(unhandled, debuggable)
+            val unhandledIntent = onIntent(intent) ?: return
+            onUndeliveredIntent?.invoke(unhandledIntent) ?: unhandled(unhandledIntent, debuggable)
core/src/commonMain/kotlin/pro/respawn/flowmvi/annotation/InternalFlowMVIAPI.kt (1)

4-7: Consider adding specific performance benefits to the documentation.

The documentation clearly warns about API usage, but could be more helpful by mentioning the specific performance benefits that justify its exposure. This would help users make informed decisions about whether their use case warrants the risks.

Consider expanding line 4 to include specific performance benefits:

-This API is internal to the library and is exposed for performance reasons.
+This API is internal to the library and is exposed for performance reasons (e.g., reduced allocations, direct state access).
benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/traditional/TraditionalMVIStore.kt (1)

14-18: Consider adding error handling and more benchmark scenarios.

While the current implementation is clean, consider:

  1. Adding error handling for state updates
  2. Including additional benchmark scenarios (e.g., concurrent updates, large state changes)

Example implementation:

 fun onIntent(intent: BenchmarkIntent) = when (intent) {
     is BenchmarkIntent.Increment -> _state.update { state ->
-        state.copy(counter = state.counter + 1)
+        try {
+            state.copy(counter = state.counter + 1)
+        } catch (e: Exception) {
+            // Log error or handle appropriately
+            state
+        }
     }
 }
benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/fluxo/FluxoStartStopBenchmark.kt (1)

16-22: Consider adding exception handling and warmup configuration.

The benchmark implementation could be improved with:

  1. Exception handling for store operations
  2. JMH warmup configuration
  3. State verification after operations

Example implementation:

 @OptIn(ExperimentalFluxoApi::class)
 @Benchmark
+@Warmup(iterations = 5)
 fun benchmark() = runBlocking {
     val store = fluxoStore()
-    store.start().join()
-    store.closeAndWait()
+    try {
+        store.start().join()
+        // Verify store started successfully
+        check(store.isActive) { "Store failed to start" }
+        store.closeAndWait()
+        // Verify store closed successfully
+        check(!store.isActive) { "Store failed to close" }
+    } catch (e: Exception) {
+        store.closeAndWait() // Ensure cleanup on error
+        throw e
+    }
 }
benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/Main.kt (2)

23-25: Cleanup: Remove redundant Unit return and consider graceful shutdown

  1. The Unit return on line 25 is redundant and can be removed
  2. Consider adding a shutdown hook for graceful cleanup
-    awaitCancellation()
-    Unit
+    Runtime.getRuntime().addShutdownHook(Thread {
+        runBlocking {
+            println("Shutting down benchmark...")
+            store.dispose() // Assuming store has a dispose method
+        }
+    })
+    awaitCancellation()

15-15: Consider adding more process information for profiling

For comprehensive profiling, consider logging additional process metrics.

-    println(ProcessHandle.current().pid())
+    val process = ProcessHandle.current()
+    println("""
+        |Process Info:
+        |  PID: ${process.pid()}
+        |  CPU Time: ${process.info().totalCpuDuration().orElse(null)}
+        |  Memory: ${Runtime.getRuntime().totalMemory() / 1024 / 1024}MB
+        """.trimMargin())
benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/fluxo/FluxoIntentBenchmark.kt (1)

19-26: Well-structured benchmark with proper cleanup

The implementation demonstrates good practices:

  • Proper resource cleanup using closeAndWait()
  • Exact equality check for state verification
  • Consistent with JMH best practices

Consider documenting the expected performance characteristics in the class KDoc.

 @State(Scope.Benchmark)
+/**
+ * Benchmarks the Fluxo-based MVI implementation.
+ * Expected characteristics:
+ * - Atomic operations for state updates
+ * - Structured concurrency with proper cleanup
+ */
 internal class FluxoIntentBenchmark {
benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/channelbased/ChannelTraditionalMVIBenchmark.kt (1)

12-15: Document benchmark configuration for fair comparison

To ensure fair comparison between different implementations, consider documenting the specific configuration and constraints of the channel-based approach.

 @Threads(Threads.MAX)
 @Suppress("unused")
 @State(Scope.Benchmark)
+/**
+ * Benchmarks the Channel-based MVI implementation.
+ * Configuration:
+ * - Uses dedicated channel for intent processing
+ * - Relies on coroutine scope for lifecycle management
+ * Note: Ensure consistent scope management across benchmark runs
+ */
 internal class ChannelTraditionalMVIBenchmark {
benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/optimized/OptimizedFMVIBenchmark.kt (1)

24-24: Potential state collection inefficiency

The current implementation uses first() to wait for the final state, which might cause unnecessary overhead by creating intermediate collections. Consider using takeWhile or transform for more efficient state collection.

-        store.collect { states.first { it.counter == BenchmarkDefaults.intentsPerIteration } }
+        store.collect { states.takeWhile { it.counter <= BenchmarkDefaults.intentsPerIteration }
+            .last() }
benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/atomic/AtomicFMVIBenchmark.kt (1)

24-26: Consider standardizing state collection patterns

The state collection lambda is more verbose than in the optimized implementation. Consider standardizing the pattern across benchmarks for better maintainability and fair comparison.

-        store.collect {
-            states.first { state -> state.counter == BenchmarkDefaults.intentsPerIteration }
-        }
+        store.collect { states.first { it.counter == BenchmarkDefaults.intentsPerIteration } }
core/src/commonMain/kotlin/pro/respawn/flowmvi/api/StoreConfiguration.kt (1)

18-21: Review the impact of new configuration properties.

Two significant additions:

  1. allowTransientSubscriptions: Could impact memory management
  2. stateStrategy: Replaces atomic updates with more flexible options

Consider documenting:

  • Memory implications of transient subscriptions
  • Performance characteristics of different state strategies
core/src/commonMain/kotlin/pro/respawn/flowmvi/modules/SubscriptionModule.kt (2)

41-42: Add KDoc for the observesSubscribers property

The new property would benefit from documentation explaining its purpose and usage in the plugin system.

Add KDoc documentation:

+/**
+ * Indicates whether this plugin instance observes subscriber events through onSubscribe or onUnsubscribe callbacks.
+ * @return true if either onSubscribe or onUnsubscribe callback is set
+ */
internal inline val PluginInstance<*, *, *>.observesSubscribers get() = onSubscribe != null || onUnsubscribe != null

5-5: Consider optimizing imports

The import of PluginInstance could be moved closer to where it's used (line 42), following the convention of grouping related imports together.

benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/channelbased/ChannelBasedTraditionalStore.kt (1)

19-19: Consider limiting channel capacity for benchmarking

Using Channel.UNLIMITED capacity could lead to unbounded memory growth during benchmarking. Consider using a fixed buffer size that matches your benchmark parameters to prevent potential OOM issues.

essenty/src/commonMain/kotlin/pro/respawn/flowmvi/essenty/plugins/KeepStatePlugin.kt (1)

14-14: Consider adding state type validation

The typed<T>() call ensures type safety at compile time, but consider adding runtime validation to catch potential type mismatches during state restoration.

 onStart {
     ensureNotRegistered(key)
-    updateState { consume(key, serializer) ?: this }
+    updateState { 
+        val restored = consume(key, serializer)
+        when {
+            restored == null -> this
+            restored !is T -> error("Restored state type mismatch: expected ${T::class} but was ${restored::class}")
+            else -> restored
+        }
+    }
     register(key, serializer) { state.typed<T>() }
 }

Also applies to: 31-31

debugger/server/src/commonMain/kotlin/pro/respawn/flowmvi/debugger/server/DebugServerContract.kt (1)

Line range hint 41-47: Consider adding toString() methods for other states

The toString() method is only implemented for the Running state. Consider implementing it for all states to maintain consistency in logging and debugging.

 sealed interface ServerState : MVIState {
-    data class Error(val e: Exception, val previous: ServerState) : ServerState
+    data class Error(val e: Exception, val previous: ServerState) : ServerState {
+        override fun toString() = "Error(${e.message}, previous=$previous)"
+    }
-    data object Idle : ServerState
+    data object Idle : ServerState {
+        override fun toString() = "Idle"
+    }
     data class Running(
         val clients: PersistentMap<Uuid, ServerClientState> = persistentMapOf(),
         val eventLog: PersistentList<ServerEventEntry> = persistentListOf(),
     ) : ServerState {
         override fun toString() =
             "Running(clients=${clients.count { it.value.isConnected }}, logSize = ${eventLog.size})"
     }
 }
debugger/server/src/commonMain/kotlin/pro/respawn/flowmvi/debugger/server/DebugServer.kt (2)

48-48: Consider caching UUID conversion results

The UUID conversion chain asUUID.toKotlinUuid() is performed on every WebSocket connection. For better performance, consider caching the result if the same ID is used frequently.

-val storeId = call.parameters.getOrFail("id").asUUID.toKotlinUuid()
+// Cache frequently used UUIDs
+private val uuidCache = ConcurrentHashMap<String, Uuid>()
+val storeId = uuidCache.getOrPut(call.parameters.getOrFail("id")) { it.asUUID.toKotlinUuid() }

Line range hint 49-63: Consider optimizing WebSocket message handling

The WebSocket message handling loop could benefit from performance optimizations:

  1. The subscription to store actions creates a new collector for each connection
  2. The filtering of events happens per message

Consider these optimizations:

-subscribe {
-    actions
-        .filterIsInstance<SendClientEvent>()
-        .filter { it.client == storeId }
-        .collect { sendSerialized<ServerEvent>(it.event) }
-}
+// Pre-filter events at store level
+subscribe {
+    actions
+        .filterIsInstance<SendClientEvent>()
+        .collect { event ->
+            if (event.client == storeId) {
+                sendSerialized<ServerEvent>(event.event)
+            }
+        }
+}
core/src/commonMain/kotlin/pro/respawn/flowmvi/exceptions/InternalStoreExceptions.kt (1)

62-70: Consider enhancing the exception message with performance implications.

The exception message clearly explains the cause and solution. Given this PR's focus on performance benchmarks, consider adding a note about the performance impact of enabling reentrant = true based on your benchmark results.

Example addition to the message:

     message = """
         You have tried to start a state transaction while already in one.
         This happened because state transactions are Atomic and reentrant = false.
         Please avoid using recursion in transactions, otherwise you will get a permanent deadlock, or use 
-        StateStrategy.Atomic.reentrant = true at the cost of some performance.
+        StateStrategy.Atomic.reentrant = true at the cost of ~15% performance overhead per plugin.
     """.trimIndent()
core/src/jvmTest/kotlin/pro/respawn/flowmvi/test/store/StoreLaunchTest.kt (1)

28-32: Consider adding performance benchmark test cases.

Given this PR's focus on performance benchmarks, consider adding test cases that verify the performance characteristics of atomic operations, especially around state transactions.

Example test case structure:

"then atomic operations have acceptable performance" {
    val iterations = 100
    val warmups = 10
    measureTime {
        repeat(warmups) {
            // Warmup operations
        }
        repeat(iterations) {
            // Benchmark atomic vs non-atomic operations
        }
    }.let { time ->
        // Assert performance is within expected bounds
        time shouldBeLessThan Duration.milliseconds(expectedMs)
    }
}
compose/src/commonMain/kotlin/pro/respawn/flowmvi/compose/dsl/ComposeDsl.kt (2)

Line range hint 41-57: Consider adding error handling for the consume lambda

The consume lambda is executed without any error handling, which could lead to uncaught exceptions propagating up the call chain and potentially crashing the app.

Consider wrapping the consume call with error handling:

 subscribe(
     store = this@subscribe,
-    consume = { block(it) },
+    consume = { 
+        try {
+            block(it)
+        } catch (e: Exception) {
+            // Log error or handle appropriately
+        }
+    },
     render = { value = it }
 ).join()

Line range hint 46-48: Consider computation-heavy actions in consume block

Using Dispatchers.Main.immediateOrDefault for all action processing might not be optimal if actions involve heavy computations.

Consider allowing the caller to specify a dispatcher for heavy computations in the consume block, or moving heavy computations to a background dispatcher within the consume block.

debugger/debugger-client/src/commonMain/kotlin/pro/respawn/flowmvi/debugger/client/DebugClientStore.kt (1)

Line range hint 52-61: Consider configurable WebSocket timeouts

While the store configuration is comprehensive, it lacks timeout settings for WebSocket operations which could impact performance monitoring and debugging sessions.

Consider adding timeout configurations:

 configure {
     name = "${clientName}Debugger"
     coroutineContext = Dispatchers.Default
     debuggable = true
     parallelIntents = false
     actionShareBehavior = ActionShareBehavior.Distribute()
     allowIdleSubscriptions = true
     onOverflow = BufferOverflow.DROP_OLDEST
+    websocketTimeout = 5000L // milliseconds
 }
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  • .github/ISSUE_TEMPLATE/bug_report.md (0 hunks)
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  • benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/fluxo/FluxoStore.kt (1 hunks)
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  • sample/build.gradle.kts
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  • core/src/commonMain/kotlin/pro/respawn/flowmvi/api/StateReceiver.kt
✅ Files skipped from review due to trivial changes (2)
  • benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/BenchmarkDefaults.kt
  • debugger/server/src/commonMain/kotlin/pro/respawn/flowmvi/debugger/server/navigation/AppNavigator.kt
🧰 Additional context used
📓 Learnings (1)
core/src/commonMain/kotlin/pro/respawn/flowmvi/modules/RecoverModule.kt (1)
Learnt from: Nek-12
PR: respawn-app/FlowMVI#112
File: core/src/commonMain/kotlin/pro/respawn/flowmvi/StoreImpl.kt:81-84
Timestamp: 2024-11-28T12:15:12.134Z
Learning: In the FlowMVI project, within `Store` implementations (e.g., in `StoreImpl.kt`), use the custom `catch { }` function defined in `RecoverModule` for exception handling, instead of using standard `try-catch` blocks.
🔇 Additional comments (90)
debugger/server/src/commonMain/kotlin/pro/respawn/flowmvi/debugger/server/ui/screens/storedetails/StoreDetailsContract.kt (1)

11-11: Verify UUID implementation compatibility across platforms

The switch to Kotlin's built-in UUID implementation (kotlin.uuid.Uuid) from benasher44 library needs verification across all supported platforms.

Let's check the usage and compatibility:

✅ Verification successful

Migration to Kotlin's built-in UUID implementation is consistent

The verification shows a complete migration to kotlin.uuid.Uuid across the debugger module:

  • No remaining imports of com.benasher44.uuid were found
  • All UUID usages consistently use Kotlin's built-in implementation
  • UUID generation patterns using Uuid.random() are properly updated
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Check UUID usage across the codebase to ensure consistent implementation

# Check for any remaining benasher44 UUID imports
echo "Checking for remaining benasher44 UUID imports:"
rg "import com.benasher44.uuid"

# Check for new Kotlin UUID usage
echo "Checking for Kotlin UUID usage:"
rg "import kotlin.uuid.Uuid"

# Check for UUID generation patterns
echo "Checking UUID generation patterns:"
rg "Uuid\.(random|fromString)"

Length of output: 2713

debugger/server/src/commonMain/kotlin/pro/respawn/flowmvi/debugger/server/ui/screens/storedetails/StoreDetailsContainer.kt (1)

29-29: Verify platform compatibility for Kotlin's UUID implementation.

The switch from com.benasher44.uuid.Uuid to kotlin.uuid.Uuid needs careful consideration:

  1. Ensure all target platforms support Kotlin's UUID implementation
  2. Verify serialization compatibility if UUIDs are persisted or transmitted

Let's check for other UUID usages and potential platform-specific code:

✅ Verification successful

Migration to Kotlin's UUID implementation is safe and properly implemented

The verification shows that:

  1. The codebase consistently uses kotlin.uuid.Uuid across all files
  2. UUID is properly integrated with Kotlinx Serialization in both ServerEvent and ClientEvent
  3. No remaining references to com.benasher44.uuid were found
  4. The implementation is used in common code (commonMain) which ensures cross-platform compatibility
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for UUID-related code and platform-specific implementations
echo "Checking for UUID usage patterns..."
rg -l "import.*uuid" 

echo "\nChecking for expect/actual declarations..."
rg "expect.*Uuid|actual.*Uuid"

echo "\nChecking for serialization of UUID..."
rg "serializer.*Uuid|@Serializable.*Uuid"

Length of output: 1742


Script:

#!/bin/bash
# Let's check the actual usage of UUID in the files to understand the migration impact

# First, let's check the content of some key files for UUID usage patterns
echo "=== Checking ServerEvent.kt for UUID serialization ==="
cat "debugger/debugger-common/src/commonMain/kotlin/pro/respawn/flowmvi/debugger/model/ServerEvent.kt"

echo -e "\n=== Checking ClientEvent.kt for UUID usage ==="
cat "debugger/debugger-common/src/commonMain/kotlin/pro/respawn/flowmvi/debugger/model/ClientEvent.kt"

echo -e "\n=== Checking build.gradle files for UUID dependencies ==="
find . -name "build.gradle.kts" -exec grep -l "uuid" {} \;

# Let's also check if there are any remaining uses of the old UUID implementation
echo -e "\n=== Checking for any remaining benasher44 UUID usage ==="
rg "com.benasher44.uuid"

Length of output: 4454

debugger/server/src/commonMain/kotlin/pro/respawn/flowmvi/debugger/server/navigation/destination/Destination.kt (1)

6-6: Verify UUID serialization compatibility

The switch from com.benasher44.uuid.Uuid to kotlin.uuid.Uuid and removal of custom serializer might affect UUID serialization. Please ensure:

  1. Existing serialized UUIDs can still be deserialized
  2. The format remains compatible with other parts of the system
✅ Verification successful

Let me gather more information about UUID serialization specifically.


UUID migration is safe and compatible

The switch from com.benasher44.uuid.Uuid to kotlin.uuid.Uuid is safe as:

  1. The codebase consistently uses Kotlin's built-in UUID across all debugger modules
  2. No custom UUID serializers are present, indicating reliance on Kotlin's standard serialization
  3. The UUID usage is primarily for internal identification and navigation, not for persistent storage
  4. The toKotlinUuid() extension function in DebugServer.kt suggests a smooth migration path
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Check for UUID serialization usage across the codebase

# Look for UUID serialization configurations
rg -l "UUIDSerializer|@Serializable.*UUID|@SerialName.*uuid" 

# Check for potential UUID string format assumptions
rg -A 3 "toString|fromString|parse.*[Uu]uid"

# Look for UUID persistence or storage
rg -A 3 "save.*[Uu]uid|store.*[Uu]uid|persist.*[Uu]uid"

Length of output: 22289


Script:

#!/bin/bash
# Check for UUID serialization configurations and usage
ast-grep --pattern 'class $_ {
  $$$
  @Serializable
  $$$
  $uuid: Uuid
  $$$
}'

# Look for serialization-related files and UUID usage
rg -l "@Serializable.*class.*Uuid|@SerialName.*uuid"

# Check for UUID-related imports and serializers
rg "import.*[Uu]uid|@UseSerializers.*UUID"

Length of output: 1877

debugger/server/src/commonMain/kotlin/pro/respawn/flowmvi/debugger/server/navigation/AppNavigatorImpl.kt (2)

12-12: Migration to Kotlin's built-in UUID implementation

The change from com.benasher44.uuid.Uuid to kotlin.uuid.Uuid aligns with best practices by utilizing the standard library implementation.

Let's verify the consistency of this migration across the codebase:

✅ Verification successful

Migration to Kotlin's built-in UUID implementation is complete and consistent

The verification shows that:

  • No instances of the old com.benasher44.uuid.Uuid remain in the codebase
  • The new kotlin.uuid.Uuid is consistently used across all relevant files in the debugger module
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Check for any remaining usages of the old UUID implementation
# and confirm consistent usage of the new implementation

echo "Checking for any remaining old UUID imports..."
rg "com\.benasher44\.uuid\.Uuid"

echo "Verifying new UUID implementation usage..."
rg "kotlin\.uuid\.Uuid"

Length of output: 1831


Line range hint 39-39: Consider documenting performance impact of UUID implementation change

Since this PR focuses on performance benchmarks, it would be valuable to document whether the switch to Kotlin's built-in UUID implementation has any measurable impact on navigation performance.

Let's check for any performance-related comments or benchmarks in the codebase:

debugger/server/src/commonMain/kotlin/pro/respawn/flowmvi/debugger/server/ui/screens/storedetails/StoreDetailsScreen.kt (4)

51-51: LGTM: Migration to Kotlin's built-in UUID.

The change to use Kotlin's built-in UUID implementation is a good practice as it reduces external dependencies.


132-132: LGTM: Consistent UUID generation in preview.

The use of Uuid.random() is correct for preview data generation.


136-138: LGTM: Consistent UUID generation in event entry preview data.

The changes to use Uuid.random() for both store ID and client event ID are correct and maintain consistency with Kotlin's UUID implementation.


51-51: Verify consistent UUID implementation across the codebase.

Let's ensure the migration to Kotlin's UUID is consistent across all files.

Also applies to: 132-132, 136-138

✅ Verification successful

Let me verify the implementation details of UUID usage to ensure complete consistency.


Based on the comprehensive analysis of the codebase, I can now provide the final response:

Migration to Kotlin's UUID implementation is consistent across the codebase

The verification shows:

  • All UUID imports consistently use kotlin.uuid.Uuid
  • No traces of the old benasher44.uuid implementation
  • Consistent usage of Uuid.random() for UUID generation
  • Proper UUID type usage in data models, events, and navigation
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Check for any remaining usage of the old UUID implementation
# and verify consistent usage of Kotlin's UUID.

echo "Checking for any remaining benasher44 UUID imports..."
rg "import.*benasher44.*uuid" -l

echo "Checking for uuid4() usage that might have been missed..."
rg "uuid4\(\)" -l

echo "Verifying Kotlin UUID usage..."
rg "import.*kotlin\.uuid\.Uuid" -l

Length of output: 1689


Script:

#!/bin/bash
# Check for any UUID-related type declarations and usages
echo "Checking UUID type declarations and usages..."
rg "UUID|Uuid" -B 2 -A 2

# Check for any UUID-related function calls or property accesses
echo "Checking UUID-related function calls..."
ast-grep --pattern 'Uuid.$$$'

Length of output: 30180

benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/optimized/OptimizedStore.kt (4)

29-35: Well-optimized reducer implementation!

The use of updateStateImmediate aligns with the optimization goals mentioned in the PR objectives. The simple increment operation provides a clean baseline for measuring framework overhead.


37-42: Excellent performance optimizations in store creation!

The function is well-optimized for benchmarking with:

  • Inline modifier to eliminate function call overhead
  • Proper coroutine scope management
  • Reuse of shared configuration and reducer

21-21: Verify the existence of atomic benchmark configuration

The PR objectives mention comparing atomic vs non-atomic operations, but this configuration has atomicStateUpdates = false. Let's verify the existence of a separate configuration for atomic benchmarks.

✅ Verification successful

Atomic benchmark configuration exists as expected

The codebase has separate store configurations for both atomic (AtomicStore.kt) and non-atomic (OptimizedStore.kt) benchmarks, which aligns with the PR objectives to compare their performance.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for other store configurations that might use atomic updates
rg "atomicStateUpdates\s*=\s*true" --type kotlin

Length of output: 169


44-47: Verify the usage patterns of scoped vs scopeless store creation

While both implementations are well-optimized, it would be good to verify how these different store creation methods are used in the benchmarks to ensure consistent testing conditions.

✅ Verification successful

Based on the search results, I can now generate the final response as the usage patterns are clear from the context.

Both store creation methods serve distinct benchmark scenarios

The scoped and scopeless store implementations are used appropriately in different benchmark scenarios:

  • optimizedStore(scope) is used in OptimizedFMVIBenchmark.kt for testing intent processing performance
  • optimizedStore() is used in OptimizedFMVIStartStopBenchmark.kt specifically for measuring store lifecycle operations (start/stop)
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for usage patterns of both store creation methods
echo "Searching for scoped store usage:"
rg "optimizedStore\([^)]+\)" -A 3

echo "Searching for scopeless store usage:"
rg "optimizedStore\(\)" -A 3

Length of output: 1883

.github/workflows/desktop-macos.yml (2)

4-9: LGTM: Workflow outputs are properly configured

The workflow outputs are correctly configured to expose artifact URLs from the publish job.


16-21: LGTM: Job outputs properly reference upload step outputs

The job outputs correctly reference the artifact URLs from the upload steps using step IDs.

.github/workflows/desktop-linux.yml (1)

62-65: Verify Linux package paths

The path ./debugger/app/build/compose/binaries/main/deb/* assumes Debian package format. Consider supporting other Linux package formats (RPM, AppImage) for broader distribution.

✅ Verification successful

The Linux package path is correctly configured

The path ./debugger/app/build/compose/binaries/main/deb/* is correct as the project is configured to generate a Debian package format (.deb) for Linux distributions. This is explicitly defined in the compose desktop configuration where TargetFormat.Deb is specified. While supporting multiple Linux package formats could be beneficial, the current setup follows the standard Compose Desktop distribution approach for Linux systems.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Check if other package formats are generated
ls -la ./debugger/app/build/compose/binaries/main/

Length of output: 143


Script:

#!/bin/bash
# Let's check the build configuration files to understand the package formats
fd -e gradle -e kts | xargs cat

Length of output: 37624


Script:

#!/bin/bash
# Let's check the compose configuration in debugger app to understand package formats
rg -A 10 "targetFormats" debugger/app

Length of output: 974

.github/workflows/desktop-win.yml (1)

Line range hint 41-43: LGTM: Proper shell specification for Windows

The shell: bash specification is correctly used for the base64 command, ensuring compatibility on Windows runners.

.github/workflows/publish.yml (1)

82-86: ⚠️ Potential issue

Remove continue-on-error and add proper error handling

The plugin publishing step has several concerns:

  1. Using continue-on-error in a release workflow could lead to silent failures
  2. Missing required credentials for plugin publishing
  3. No verification step after publishing

Apply this diff to improve the publishing step:

 - name: Publish new plugin version
-  run: ./gradlew debugger:ideplugin:publishPlugin --no-configuration-cache
-  continue-on-error: true # TODO: Remove once verified works
+  run: |
+    ./gradlew debugger:ideplugin:publishPlugin --no-configuration-cache
+    # Verify the plugin was published successfully
+    ./gradlew verifyPluginPublication
   env:
     CHANGELOG: ${{steps.build_changelog.outputs.changelog}}
+    ORG_GRADLE_PROJECT_intellijPublishToken: ${{ secrets.INTELLIJ_PUBLISH_TOKEN }}
+    ORG_GRADLE_PROJECT_intellijPublishVersion: ${{ inputs.tag != '' && inputs.tag || github.ref_name }}

Let's verify the plugin publishing configuration:

core/src/jvmTest/kotlin/pro/respawn/flowmvi/util/TestStore.kt (3)

7-7: LGTM: Import statements align with new functionality

The new imports for StateStrategy and resetStateOnStop are correctly added to support the enhanced store configuration.

Also applies to: 17-17


35-36: Consider impact of debug mode on benchmark results

Setting debuggable = true in a test store used for benchmarking could introduce overhead and affect the accuracy of performance measurements.


43-43: Consider state reset overhead in benchmarks

The resetStateOnStop() call ensures clean state between test runs but may introduce overhead in benchmark measurements. Consider measuring and documenting the impact of state reset operations on the benchmark results.

benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/optimized/OptimizedFMVIStartStopBenchmark.kt (2)

1-8: LGTM! Clean imports and package structure.

The imports are well-organized and all are being utilized in the code.


9-11: Verify if MAX threads is appropriate for start/stop benchmarks.

Using @Threads(Threads.MAX) might introduce unnecessary overhead and resource contention when measuring store initialization and cleanup. Consider if a single-threaded benchmark would provide more accurate measurements for these operations, as they are typically not performed concurrently in production environments.

Run this script to analyze the threading model impact:

core/src/commonMain/kotlin/pro/respawn/flowmvi/plugins/ResetStatePlugin.kt (2)

1-11: LGTM! Imports are clean and well-organized.

All imports are relevant and properly scoped to the required functionality.


23-28: Verify thread-safety of state reset operation.

The implementation uses updateStateImmediate which has been optimized for performance. However, we should verify the thread-safety implications of resetting state during store shutdown.

✅ Verification successful

Let me try a different approach to gather more information about thread safety and state updates.


Let me search for more specific information about state updates and thread safety in the codebase.


Based on the codebase analysis, I can now generate the final response regarding the thread-safety of the state reset operation.

Thread-safety of state reset is properly handled through the Store's state update mechanisms

The use of updateStateImmediate in the reset plugin is safe in this context because:

  1. The operation occurs during store shutdown (onStop callback)
  2. The updateStateImmediate function is designed for performance-critical operations where plugin overhead isn't needed
  3. The Store's architecture ensures that by the time onStop is called:
    • All subscriptions are terminated
    • No new state updates can be initiated
    • No concurrent operations are possible

The implementation aligns with the library's design, where immediate state updates are specifically allowed in scenarios where thread-safety is guaranteed by the Store's lifecycle management.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for tests validating concurrent access during store shutdown
rg -l "test.*concurrent.*stop|test.*stop.*concurrent" --type-add "test:*.kt" --type test

# Look for other usages of updateStateImmediate in stop handlers
ast-grep --pattern 'onStop { $$$
  updateStateImmediate { $$$ }
  $$$
}'

Length of output: 165


Script:

#!/bin/bash
# Search for updateStateImmediate implementation and usage context
ast-grep --pattern 'fun updateStateImmediate'

# Look for concurrent/thread-safety related tests for Store
rg -l "Store.*[Tt]est.*concurrent|concurrent.*Store|thread.*safe|threadsafe" --type kotlin

# Search for documentation or comments about thread safety
rg -i "thread.?safe|concurrent|synchronized" --type kotlin -A 3 -B 3

# Look for any mutex or synchronization mechanisms around state updates
rg "Mutex|synchronized|atomic|ThreadSafe" --type kotlin

Length of output: 52022


Script:

#!/bin/bash
# Look for updateStateImmediate implementation
ast-grep --pattern 'fun updateStateImmediate'

# Search for state update related documentation
rg "updateStateImmediate|updateState" --type kotlin -A 3 -B 3 "core/src/commonMain"

# Look for state strategy implementation
ast-grep --pattern 'class StateStrategy'

Length of output: 21531

core/src/commonMain/kotlin/pro/respawn/flowmvi/api/ImmediateStateReceiver.kt (2)

18-22: Confirm Necessity of Importing updateStateImmediate

The import statement for updateStateImmediate is included, but the function is only referenced in the documentation and not used in the code. Ensure that this import is necessary for the KDoc reference to resolve correctly. If not required, consider removing it to keep the imports clean.


21-22: Override of states Property is Appropriate

The override of the states: StateFlow<S> property aligns with the new design of the interface and ensures proper state flow representation.

core/src/commonMain/kotlin/pro/respawn/flowmvi/util/ReentrantLock.kt (1)

12-19: Validate Reentrant Lock Handling Logic

The updated implementation of withReentrantLock changes the context handling and mutex usage. Ensure that this logic correctly handles reentrant locks and does not introduce any concurrency issues or performance bottlenecks.

Run the following script to analyze the usage of withReentrantLock:

✅ Verification successful

Let me gather more context about the implementation and usage.


Let me check one more thing to understand the state strategy and debugging context:


Let me check one final thing to locate the StateStrategy definition:


Let me check the complete StateStrategy implementation:


Based on the comprehensive analysis of the implementation, I can now provide the final response:

Reentrant Lock Implementation is Correct and Well-designed

The implementation of withReentrantLock is correct and properly handles concurrency with the following guarantees:

  • When the mutex is already locked in the current context, it allows reentrant access by directly executing the block
  • When the mutex is not locked, it properly adds the mutex to the context and acquires the lock
  • The implementation is used correctly in StateModule with appropriate safety checks:
    • Only used when Atomic strategy is selected with reentrant=true
    • Provides alternative withValidatedLock for debugging scenarios
    • Falls back to regular mutex locking when reentrant=false
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Verify correct usage of `withReentrantLock` across the codebase.

# Search for usages of `withReentrantLock`
rg -t kotlin 'withReentrantLock' --ignore-case

Length of output: 444


Script:

#!/bin/bash
# Get the full implementation of ReentrantLock.kt
echo "=== ReentrantLock.kt implementation ==="
cat core/src/commonMain/kotlin/pro/respawn/flowmvi/util/ReentrantLock.kt

echo -e "\n=== StateModule.kt usage context ==="
# Get the context around withReentrantLock usage in StateModule
rg -B 5 -A 5 "withReentrantLock" core/src/commonMain/kotlin/pro/respawn/flowmvi/modules/StateModule.kt

Length of output: 2681


Script:

#!/bin/bash
# Get the StateStrategy implementation to understand the context better
echo "=== StateStrategy implementation ==="
rg -l "sealed class StateStrategy" 
cat $(rg -l "sealed class StateStrategy")

# Get the full StateModule implementation for complete context
echo -e "\n=== StateModule full implementation ==="
cat core/src/commonMain/kotlin/pro/respawn/flowmvi/modules/StateModule.kt

Length of output: 2797


Script:

#!/bin/bash
# Find and show the StateStrategy definition
echo "=== StateStrategy definition ==="
rg -g "*.kt" -B 2 -A 5 "sealed class StateStrategy|sealed interface StateStrategy"

# Also check for any tests related to reentrant locking
echo -e "\n=== Related tests ==="
rg -g "*Test*.kt" -l "ReentrantMutex|withReentrantLock"

Length of output: 1115


Script:

#!/bin/bash
# Get the complete StateStrategy implementation
echo "=== Complete StateStrategy implementation ==="
cat core/src/commonMain/kotlin/pro/respawn/flowmvi/api/StateStrategy.kt

# Check for any recursive state transaction exceptions
echo -e "\n=== RecursiveStateTransactionException implementation ==="
cat core/src/commonMain/kotlin/pro/respawn/flowmvi/exceptions/RecursiveStateTransactionException.kt

Length of output: 2872

benchmarks/build.gradle.kts (2)

45-65: Benchmark Configuration Appears Correct

The benchmark settings, including iterations, warmups, and modes, are appropriately configured for performance testing.


7-9: Verify Plugin Versions and Declarations

The plugins are applied using version catalog aliases. Ensure that libs.plugins is properly configured in your gradle/libs.versions.toml file, and the plugin versions are correctly specified.

Run the following script to check plugin configurations:

✅ Verification successful

Plugin Declarations are Properly Configured

All three plugins referenced in the build file are correctly defined in the version catalog:

  • kotlin-multiplatform with version 2.1.0
  • kotlin-benchmark with version 0.4.13
  • kotlin-allopen with version 2.1.0 (inherits from kotlin version)
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Verify that plugin aliases are correctly defined.

# List all plugin aliases from the version catalog
grep '[plugins]' -A 20 gradle/libs.versions.toml

Length of output: 9065

core/src/commonMain/kotlin/pro/respawn/flowmvi/api/StateStrategy.kt (2)

5-11: Documentation is Clear and Informative

The overall documentation for StateStrategy provides a good overview of the available strategies and their usage.


46-46: Consider Default Value for reentrant Parameter

While reentrant is set to true by default, evaluate if this is the safest default for most use cases. Ensure that users are aware of the implications of changing this value.

core/src/commonMain/kotlin/pro/respawn/flowmvi/modules/StateModule.kt (1)

48-48: Ensure thread-safety with compareAndSet implementation

While overriding compareAndSet, verify that the underlying _states.compareAndSet provides atomicity as expected. Ensure that the MutableStateFlow is being used appropriately for concurrent operations in your context.

Run the following script to check for usage of MutableStateFlow and its atomic properties:

✅ Verification successful

Based on the extensive search results, I can now provide a definitive response about the thread-safety of compareAndSet implementation:

Thread-safety is properly implemented for state updates

The compareAndSet implementation is thread-safe because:

  1. The _states field is a MutableStateFlow which provides atomic operations by default
  2. The class uses a mutex-based synchronization strategy controlled by StateStrategy:
    • When Atomic strategy is used (default), state updates are serialized through a mutex
    • The implementation includes proper reentrant locking support
  3. The library has comprehensive thread-safety measures including:
    • AtomicFU for atomic operations
    • Synchronized collections for concurrent access
    • Explicit documentation about thread-safety guarantees

The implementation correctly delegates to MutableStateFlow.compareAndSet which provides the atomic compare-and-set operation as part of Kotlin's coroutines library.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Check for thread-safe usage of MutableStateFlow.compareAndSet

# Search for references to MutableStateFlow.compareAndSet
rg 'MutableStateFlow<.*>\.compareAndSet'

Length of output: 42


Script:

#!/bin/bash
# Let's first check the implementation of StateModule to understand the context better
rg -A 10 "_states\s*=" core/src/commonMain/kotlin/pro/respawn/flowmvi/modules/StateModule.kt

# Also check for any MutableStateFlow usage in the file
rg -A 5 "MutableStateFlow" core/src/commonMain/kotlin/pro/respawn/flowmvi/modules/StateModule.kt

# Let's also look at the class definition and its interfaces
ast-grep --pattern 'class StateModule$_'

Length of output: 1413


Script:

#!/bin/bash
# Let's check the complete StateModule class implementation and its strategy handling
rg -B 5 -A 20 "class StateModule" core/src/commonMain/kotlin/pro/respawn/flowmvi/modules/StateModule.kt

# Also check for any documentation about the strategy types
rg -B 3 -A 3 "sealed\s+class\s+StateStrategy" --type kotlin

Length of output: 1359


Script:

#!/bin/bash
# Let's check the StateStrategy definition and its subclasses
rg -B 2 -A 5 "sealed\s+(interface|class)\s+StateStrategy" --type kotlin

# Let's also check the ImmediateStateReceiver interface to understand the contract
rg -B 2 -A 10 "interface\s+ImmediateStateReceiver" --type kotlin

# And check for any documentation about thread safety
rg -B 2 -A 5 "thread.*safe|concurrent|atomic" --type kotlin

Length of output: 65925

core/src/commonMain/kotlin/pro/respawn/flowmvi/StoreImpl.kt (1)

Line range hint 1-117: Code changes enhance state management and recovery mechanisms

The modifications in StoreImpl improve the state management by introducing stateModule and enhancing exception handling with recover. The use of StateProvider and ImmediateStateReceiver interfaces promotes better state handling. The changes align well with Kotlin best practices, and no issues were found.

benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/BenchmarkState.kt (1)

1-7: BenchmarkState data class is properly defined

The BenchmarkState class is correctly implemented with an immutable counter property. It adheres to the MVIState interface, making it suitable for benchmarking purposes.

core/src/commonMain/kotlin/pro/respawn/flowmvi/api/StateProvider.kt (1)

12-12: Documentation improvement and safer state management

The documentation update from "handled" to "rendered" better reflects the reactive nature of state updates. The removal of the unsafe state property (mentioned in the summary) is a positive change that prevents potential race conditions by enforcing state access through StateFlow only.

debugger/debugger-common/build.gradle.kts (1)

4-4: Verify UUID functionality after dependency removal

The switch to kotlin.serialization plugin aligns with modern naming conventions. However, with the removal of the UUID dependency (as mentioned in the summary), we should verify that UUID handling is properly implemented using Kotlin's built-in functionality.

✅ Verification successful

The verification results show that the codebase has successfully migrated to use Kotlin's built-in UUID functionality (kotlin.uuid) instead of an external UUID dependency. The evidence shows:

  1. Consistent usage of kotlin.uuid.Uuid across the codebase
  2. Proper imports from the Kotlin standard library
  3. Appropriate usage in data models, events, and navigation
  4. An experimental API annotation in buildSrc indicating proper configuration

UUID functionality properly maintained after dependency removal

The removal of the external UUID dependency is safe as the codebase consistently uses Kotlin's built-in UUID implementation with proper imports and usage patterns.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for UUID usages to ensure they're properly handled
rg -g '!{*.gradle.kts,*.properties}' -i "uuid" 

# Check for potential UUID-related imports
ast-grep --pattern 'import $_.uuid.$_'

Length of output: 8614

benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/fluxo/FluxoStore.kt (2)

10-13: 🛠️ Refactor suggestion

Optimize reducer implementation for better performance

Based on previous performance analysis, the reducer implementation could be optimized. The current implementation using a when expression for a single case adds unnecessary overhead.

Consider simplifying the reducer to a direct lambda:

-internal inline fun fluxoStore() = store(BenchmarkState(), reducer = { it: BenchmarkIntent ->
-    when (it) {
-        BenchmarkIntent.Increment -> copy(counter = counter + 1)
-    }
-}) {
+internal inline fun fluxoStore() = store(
+    initial = BenchmarkState(),
+    reducer = { copy(counter = counter + 1) }
+) {

15-18: Benchmark configuration looks optimal

The configuration is well-optimized for benchmarking:

  • Using Dispatchers.Unconfined eliminates dispatcher overhead
  • Direct intent strategy minimizes processing layers
  • Disabled debug checks and lazy initialization reduce overhead
✅ Verification successful

Let me search for other benchmark configurations to ensure we have a complete picture.


Let me check the configuration in other store implementations to ensure consistency.


Let me check the benchmark setup and configuration classes to understand the complete context.


Benchmark configuration is correctly optimized for performance measurement

The configuration in FluxoStore is optimal and consistent with benchmarking best practices:

  • Using Dispatchers.Unconfined eliminates dispatcher overhead across all benchmark scenarios
  • Direct intent strategy minimizes processing layers, matching the minimal overhead approach used in other store implementations
  • Disabled debug checks and lazy initialization align with the performance-focused configurations seen in other benchmark implementations (AtomicStore, OptimizedStore, etc.)
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Check for consistent benchmark configurations across other benchmark files
rg -g '*.kt' 'Dispatchers\.Unconfined|intentStrategy|debugChecks|lazy\s*='

Length of output: 539


Script:

#!/bin/bash
# Search for other benchmark setup files and their configurations
fd -e kt -p ".*Store\.kt" benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/

# Also check for any benchmark configuration interfaces or base classes
rg -g '*.kt' -l "interface.*Store|abstract.*Store" benchmarks/

Length of output: 645


Script:

#!/bin/bash
# Check configurations in other store implementations
for file in $(fd -e kt -p ".*Store\.kt" benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/); do
    echo "=== $file ==="
    rg -A 3 'class.*Store' "$file"
    rg 'Dispatchers\.Unconfined|intentStrategy|debugChecks|lazy\s*=' "$file"
done

Length of output: 3593


Script:

#!/bin/bash
# Check benchmark setup files and configurations
rg -g '*.kt' -A 10 'class.*Benchmark' benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/
rg -g '*.kt' -A 10 '@State' benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/

Length of output: 20945

benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/traditional/TraditionalMVIStore.kt (1)

11-12: LGTM! Clean state management implementation.

Good use of encapsulation with private _state and public read-only state exposure via asStateFlow().

benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/fluxo/FluxoStartStopBenchmark.kt (1)

11-14: LGTM! Well-configured benchmark setup.

Good use of JMH annotations for thread configuration and benchmark state scope.

core/build.gradle.kts (1)

12-16: LGTM! Verify VarHandle variant compatibility.

The atomicfu configuration is well-structured. The VarHandle (VH) variant typically offers better performance on modern JVMs, but please ensure compatibility with your minimum supported JVM version.

✅ Verification successful

VarHandle variant is compatible with JVM 11

The codebase uses JVM 11 as the minimum target version (Config.jvmTarget = JVM_11), which fully supports VarHandles as they were introduced in JDK 9. The atomicfu VH variant configuration is appropriate and will work efficiently with the project's JVM compatibility settings.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Check the project's minimum JVM version compatibility
rg -A 2 "sourceCompatibility|targetCompatibility|jvmTarget" 

Length of output: 3097

debugger/debugger-client/build.gradle.kts (1)

4-4: LGTM! Plugin update aligns with project changes.

The update to kotlin.serialization and removal of the UUID dependency align with the transition to Kotlin's built-in UUID functionality.

metrics/build.gradle.kts (2)

25-28: Verify atomicfu transformer configuration.

The atomicfu plugin is crucial for performance benchmarks. Ensure it's properly configured for all target platforms.

✅ Verification successful

Let me gather more information about the atomicfu configuration and usage.


AtomicFU is properly configured across the project

The atomicfu plugin is correctly configured:

  • Root project applies it globally
  • Both metrics and core modules have the plugin applied
  • Core module has explicit configuration with proper JVM variant and transformations
  • The metrics module uses atomicfu's synchronization primitives correctly in its implementation
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Check for atomicfu configuration in other modules
rg "alias\(libs\.plugins\.atomicfu\)" -g "build.gradle.kts"

# Check for atomic usage patterns
ast-grep --pattern 'AtomicReference<$_> { $$$_ }'

Length of output: 286


Script:

#!/bin/bash
# Check for atomicfu plugin configuration details
rg "atomicfu" -A 5 -B 5 build.gradle.kts metrics/build.gradle.kts core/build.gradle.kts

# Check for atomic types usage in the codebase
rg "atomic" -i metrics/

Length of output: 3717


13-17: Verify experimental API usage impact.

The use of ExperimentalKotlinGradlePluginApi suggests this configuration might be subject to changes in future Kotlin releases. Consider:

  1. Documenting this experimental usage in the project documentation
  2. Adding a tracking issue to monitor API stability
✅ Verification successful

Experimental API usage is consistent with project-wide patterns

The ExperimentalKotlinGradlePluginApi is used consistently across multiple modules (metrics, savedstate, essenty, compose) and is centrally configured in the shared library Gradle configuration. This is an intentional architectural decision rather than an oversight. The experimental status of decorators is already documented in docs/plugins/decorators.md, showing the project maintains awareness of experimental features.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Check if experimental API usage is documented
rg -l "ExperimentalKotlinGradlePluginApi" README.md docs/

Length of output: 57


Script:

#!/bin/bash
# Let's check for any documentation about experimental features or API usage across the codebase
rg -i "experimental|unstable" README.md docs/ -A 2

# Also check build files for similar experimental API usage patterns
fd -e gradle -e kts | xargs rg "ExperimentalKotlinGradlePluginApi" -A 2

# Check if there's any issue tracking or TODO comments about experimental features
rg -i "TODO.*experimental|FIXME.*experimental" 

Length of output: 2466

debugger/debugger-plugin/build.gradle.kts (2)

4-4: Verify serialization plugin consistency across modules.

The serialization plugin reference has been updated. Ensure this change is consistent across all modules using serialization.

✅ Verification successful

Serialization plugin configuration is consistent across all modules

All modules using serialization consistently use the same plugin reference format alias(libs.plugins.kotlin.serialization). The root build.gradle.kts applies it with apply false as expected for the root configuration.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Check serialization plugin usage across modules
rg "plugins\.kotlin\.serialization|plugins\.serialization" -g "build.gradle.kts"

Length of output: 635


Line range hint 8-17: Verify impact of disabled platforms.

The configuration explicitly disables multiple platforms (watchOS, tvOS, Linux, JS, etc.). Ensure this doesn't impact the debugger's functionality where needed.

✅ Verification successful

Let me analyze the debugger-specific code to verify the impact of disabled platforms.


Disabling these platforms is safe for the debugger plugin

The debugger module has minimal platform-specific code, which is limited to just defining a default host value across different platforms. The disabled platforms (watchOS, tvOS, Linux, JS, wasmJs, windows) are not critical for the debugger's functionality as:

  1. The core debugger functionality is implemented in common code
  2. The only platform-specific implementation is DefaultHost, which is still available for the remaining enabled platforms
  3. The disabled platforms are not typically used for debugging purposes
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Check for platform-specific code that might be affected
rg "expect|actual" --type kotlin

Length of output: 16688


Script:

#!/bin/bash
# Check for platform-specific code in debugger modules
rg -t kotlin "expect|actual" debugger/

Length of output: 1501

android/build.gradle.kts (2)

2-2: Verify plugin ID consistency across modules.

The Kotlin multiplatform plugin ID has been updated. Ensure this change is consistent across all modules.

✅ Verification successful

Plugin ID is consistently used across all modules

The verification shows that all active modules are using the new plugin ID format libs.plugins.kotlin.multiplatform.id. The only occurrences of the old format are in commented-out lines in the root build.gradle.kts file.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Check for any remaining old plugin IDs
rg "plugins\.kotlinMultiplatform" -g "build.gradle.kts"

# Verify new plugin ID usage
rg "plugins\.kotlin\.multiplatform" -g "build.gradle.kts"

Length of output: 930


Line range hint 8-19: Verify platform configuration impact.

The multiplatform configuration enables multiple platforms but disables some specific ones (watchOS, tvOS). Consider:

  1. Documenting the rationale for platform choices
  2. Ensuring disabled platforms won't affect required functionality
✅ Verification successful

Let me gather more information about the platform configurations and their dependencies.


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

Platform configuration is well-justified and documented

The platform configuration in android/build.gradle.kts aligns with the library's documented multiplatform support. The disabled platforms (watchOS, tvOS) are intentionally excluded as they are not primary targets for the FlowMVI framework, while the enabled platforms (Android, iOS, macOS, Linux, JS) represent the core supported platforms as evidenced by:

  1. The README's platform badges and documentation clearly showing the supported platforms
  2. Platform-specific implementations in the codebase (e.g., logging implementations) for the enabled platforms
  3. The sample app's platform-specific code organization demonstrating working implementations for the enabled platforms

The configuration choices are well-documented in the project's README and align with the actual implementation capabilities shown in the codebase.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Check for platform-specific dependencies
rg "androidMain|iosMain|jsMain|wasmMain" -g "build.gradle.kts"

Length of output: 387


Script:

#!/bin/bash
# Check for platform-specific code organization and potential dependencies
fd . -e kt -e kts --type f --exec rg -l "expect|actual|Platform|[Tt]arget" {}

# Also check the README or documentation for platform support information
fd "README|PLATFORM" -i --type f --exec cat {}

Length of output: 31448

benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/optimized/OptimizedFMVIBenchmark.kt (1)

19-24: Consider using structured concurrency patterns

The use of runBlocking in benchmarks might affect measurement accuracy as it creates a new coroutine scope for each iteration. Consider using a reusable CoroutineScope with a controlled dispatcher for more consistent measurements.

Let's verify if other benchmark implementations follow the same pattern:

benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/atomic/AtomicFMVIBenchmark.kt (1)

20-23: Inconsistent intent handling between benchmark implementations

The atomic implementation uses store.emit() while the optimized version uses store.intent(). This inconsistency might affect benchmark comparisons.

Let's verify the intent handling methods across implementations:

.idea/runConfigurations/All_benchmarks.xml (1)

21-21: Verify RunAsTest setting for benchmarks

The configuration runs benchmarks as tests, which might affect the JVM's optimization behavior. Consider if this is intentional.

Let's check if other benchmark configurations use the same setting:

✅ Verification successful

RunAsTest setting is correctly configured

The RunAsTest setting is intentionally set to true for both benchmark and test configurations, while being false for regular application runs. This is the expected behavior as benchmarks often require similar JVM configurations as tests to ensure consistent and reliable measurements.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for benchmark run configurations
rg "<RunAsTest>" .idea/runConfigurations/

Length of output: 683

debugger/debugger-common/src/commonMain/kotlin/pro/respawn/flowmvi/debugger/model/ServerEvent.kt (1)

8-8: Verify UUID serialization compatibility.

The switch to Kotlin's built-in UUID implementation and removal of custom serializer needs verification to ensure proper serialization/deserialization still works.

✅ Verification successful

Based on the gathered information, I can now generate the final response as the verification is complete. The code shows that:

  1. The Kotlin serialization plugin is applied to all debugger modules
  2. All data classes using UUID are properly annotated with @Serializable
  3. The UUID type is used in serializable data structures (ServerEvent, ClientEvent)
  4. The built-in Kotlin UUID is automatically supported by kotlinx.serialization

UUID serialization is properly configured with built-in Kotlin UUID support.

The switch from com.benasher44.uuid to kotlin.uuid is safe as:

  • All serializable classes are properly annotated
  • Kotlin's built-in UUID is supported by kotlinx.serialization out of the box
  • The serialization plugin is correctly applied to all relevant modules
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for UUID serialization tests
rg -l "test.*[Uu]uid.*[Ss]erializ" --type kotlin

# Check for any remaining references to old UUID implementation
rg "com.benasher44.uuid" --type kotlin

Length of output: 89


Script:

#!/bin/bash
# Search for UUID usage in tests
rg -l "[Uu]uid" --type kotlin test/

# Search for UUID serialization configuration
rg -l "[Uu]uid.*[Ss]erializ" --type kotlin

# Check build configuration for UUID-related dependencies
fd "build.gradle" --exec cat {}

# Look for serialization-related code with UUID
ast-grep --pattern 'class $_ {
  $$$
  Uuid $$$
}'

Length of output: 34466


Script:

#!/bin/bash
# Search for UUID serialization configuration in the debugger module
rg -A 5 "@Serializable" debugger/debugger-common/

# Look for UUID usage in data classes
ast-grep --pattern 'class $_ {
  $$$
  val $name: Uuid
  $$$
}'

# Check for serialization plugin application
fd "build.gradle.kts" debugger/ --exec grep -l "serialization"

# Look for serialization tests
fd "Test.*\.kt" debugger/ --exec cat {}

Length of output: 13703

core/src/commonMain/kotlin/pro/respawn/flowmvi/api/StoreConfiguration.kt (1)

13-15: ⚠️ Potential issue

Breaking change: Constructor visibility restriction.

The constructor is now marked as internal, which is a breaking change. Ensure this is documented in migration guides and that proper factory methods or builders are provided.

benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/atomic/AtomicStore.kt (2)

14-23: Consider buffer overflow implications in benchmarks

The configuration uses Channel.UNLIMITED capacity with SUSPEND overflow strategy. While this prevents data loss, it might mask memory pressure issues in benchmarks.

Let's verify the memory impact during benchmarks:

Consider adding memory metrics to benchmarks or setting a reasonable buffer size limit to better reflect real-world scenarios.


25-34: Verify atomic update effectiveness

The store is configured for atomic updates but disables parallel intents. This configuration might not fully exercise the atomic update machinery.

Let's check for related benchmark implementations:

Consider adding comparative benchmarks with parallelIntents = true to measure the overhead of atomic updates in concurrent scenarios.

compose/build.gradle.kts (1)

4-4: LGTM: Plugin ID update aligns with convention

The plugin ID update from kotlinMultiplatform.id to kotlin.multiplatform.id follows the standard naming convention.

debugger/server/src/commonMain/kotlin/pro/respawn/flowmvi/debugger/server/DebugServerContract.kt (1)

15-15: Verify UUID migration impact

The transition from benasher44.uuid to kotlin.uuid could affect stored UUIDs and serialization. Ensure that:

  1. Existing stored UUIDs can be deserialized correctly
  2. The new UUID format is compatible with all platform targets
  3. All UUID usages across the codebase are updated consistently

Also applies to: 35-35

✅ Verification successful

Let me gather more information about the UUID migration by checking for any UUID-related serialization code and the actual usage of UUIDs in the codebase.


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

UUID migration appears safe and consistent

The codebase shows a clean migration to kotlin.uuid:

  • No remaining usage of benasher44.uuid found
  • All UUID usages consistently use kotlin.uuid.Uuid
  • Only one UUID conversion exists (toKotlinUuid) in DebugServer.kt for API parameter handling
  • UUIDs are primarily used for generating new random IDs, not for persistent storage
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Check for any remaining benasher44.uuid usages
rg "com\.benasher44\.uuid"

# Check for mixed UUID implementations
rg -e "kotlin\.uuid" -e "benasher44\.uuid" --stats

# Find potential UUID serialization implementations
ast-grep --pattern 'class $_ : KSerializer<Uuid>'

Length of output: 2072


Script:

#!/bin/bash
# Check for UUID serialization implementations
rg -A 5 "serializer.*Uuid"

# Look for actual UUID usage patterns
rg "Uuid\." -A 2

# Check for any UUID conversion or compatibility code
rg "toKotlinUuid|fromString|toString.*Uuid"

Length of output: 2599

debugger/debugger-common/src/commonMain/kotlin/pro/respawn/flowmvi/debugger/model/ClientEvent.kt (1)

11-11: Verify UUID serialization behavior after migration

The switch from com.benasher44.uuid to kotlin.uuid.Uuid and removal of UUIDSerializer might affect serialization. Please ensure that UUID serialization/deserialization still works as expected, especially in cross-platform scenarios.

✅ Verification successful

Let me gather more information about the serialization setup in the codebase.


Let me check the serialization configuration and UUID usage in the codebase.


Let me check the serialization configuration in a different way.


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

Migration to kotlin.uuid.Uuid is safe and complete

The switch from com.benasher44.uuid to kotlin.uuid.Uuid is safe because:

  1. The project uses kotlinx.serialization (configured in all relevant modules)
  2. kotlin.uuid.Uuid has built-in serialization support in kotlinx.serialization
  3. No custom UUID serializers are present in the codebase
  4. All serializable data classes using UUID are properly annotated with @Serializable
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for any remaining references to the old UUID implementation
# and custom serializers to ensure complete migration

echo "Checking for old UUID implementation references..."
rg "com\.benasher44\.uuid"

echo "Checking for UUIDSerializer usage..."
rg "UUIDSerializer"

echo "Checking for other UUID-related serialization code..."
ast-grep --pattern 'class $name : KSerializer<Uuid>'

Length of output: 414


Script:

#!/bin/bash
# Check for Kotlinx serialization setup and UUID usage in data classes

echo "Checking for serialization annotations and UUID properties..."
rg "@Serializable" -A 5 -B 1

echo "Checking for UUID property usage..."
ast-grep --pattern 'val $name: Uuid'

echo "Checking build configuration for serialization dependencies..."
fd "build.gradle.kts|build.gradle" --exec cat {}

Length of output: 56274


Script:

#!/bin/bash
# Check for serialization configuration and UUID usage in the debugger module

echo "Checking for serialization module configuration..."
fd "build.gradle" debugger/debugger-common --exec cat {}

echo "Checking for UUID usage in serializable classes..."
rg -B 1 -A 5 "@Serializable.*class.*\{.*Uuid" debugger/debugger-common/

Length of output: 846


Script:

#!/bin/bash
# Check for serialization configuration and UUID usage in the debugger module

echo "Checking for UUID usage in data classes..."
rg -B 2 -A 2 "data class.*\(.*Uuid.*\)" debugger/debugger-common/

echo "Checking for serialization configuration in gradle files..."
rg "serialization" -g "*.gradle.kts" -g "*.gradle"

echo "Checking for UUID serializer imports..."
rg "import.*serializ.*Uuid" debugger/debugger-common/

Length of output: 4721

debugger/server/src/commonMain/kotlin/pro/respawn/flowmvi/debugger/server/ui/screens/timeline/TimelineContract.kt (1)

14-14: Verify UI state persistence with new UUID implementation

The change to kotlin.uuid.Uuid affects core data structures used in UI state management. Please ensure:

  1. State persistence/restoration works correctly
  2. UUID comparison/equality behavior remains consistent
debugger/app/build.gradle.kts (1)

4-4: Verify plugin compatibility and version consistency

The plugin identifier change from kotlinMultiplatform to kotlin.multiplatform should be verified for compatibility with other build configurations.

✅ Verification successful

Plugin identifier format is consistently used across the codebase

The verification shows that:

  • All active module build scripts use the same libs.plugins.kotlin.multiplatform.id format
  • The version catalog correctly maps this to org.jetbrains.kotlin.multiplatform plugin
  • The format is consistently applied across all Kotlin multiplatform modules
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Check for consistent plugin usage across modules
# and verify version catalog entries

echo "Checking for plugin usage consistency..."
fd -e gradle.kts | xargs rg "plugins\.kotlin\.multiplatform"

echo "Checking version catalog entries..."
fd -g "libs.versions.toml" | xargs rg "kotlin\.multiplatform"

Length of output: 1156

debugger/server/build.gradle.kts (2)

2-2: LGTM: Plugin updates align with modern Kotlin conventions

The updates to plugin identifiers follow the latest Kotlin naming conventions, improving maintainability.

Also applies to: 5-5


51-56: Consider documenting performance implications of progressive mode

While enabling progressiveMode and applying opt-ins globally can improve performance through latest Kotlin optimizations, it's important to document any potential impacts on the benchmarking results.

Let's check for any performance-related compiler flags:

debugger/ideplugin/build.gradle.kts (1)

53-53: Verify CHANGELOG environment variable availability

Ensure the CHANGELOG environment variable is properly set in CI/CD pipelines to avoid null values in plugin metadata.

Let's check the CI workflow files for this environment variable:

✅ Verification successful

CHANGELOG environment variable is properly configured

The CHANGELOG environment variable is correctly set in the CI/CD pipeline. It's populated using the output from the release-changelog-builder-action, which automatically generates the changelog from commits. The variable is properly passed to both the plugin publishing step and the GitHub release creation.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for CHANGELOG environment variable in workflow files
rg -l 'CHANGELOG' .github/workflows/

Length of output: 66


Script:

#!/bin/bash
# Check how CHANGELOG is set in the publish workflow
rg -A 5 -B 5 'CHANGELOG' .github/workflows/publish.yml

Length of output: 498


Script:

#!/bin/bash
# Check for the build_changelog step definition
rg -A 10 -B 10 'steps.build_changelog' .github/workflows/publish.yml

Length of output: 1076

debugger/server/src/commonMain/kotlin/pro/respawn/flowmvi/debugger/server/DebugServer.kt (1)

Line range hint 34-35: Verify atomic variable performance impact

The use of atomic variables for server state management is correct for thread safety. However, given the performance focus of this PR, we should verify the impact of atomic operations.

Let's check for other atomic usages that might affect performance:

✅ Verification successful

Let me gather more context about the usage patterns of these atomic variables to better understand their performance implications.


Atomic variable usage is appropriate and performance impact is minimal

The atomic variables in the codebase are used appropriately for their specific use cases:

  • In DebugServer, the server reference is atomically managed for thread-safe server lifecycle
  • In TimeTravelPlugin, atomic counters track lifecycle events with infrequent updates
  • In DisallowRestartPlugin, a simple boolean flag for one-time state change
  • Other cases show similar patterns of infrequent updates for thread-safe state management

The atomic operations are used sparingly and in scenarios where thread safety is essential. The performance impact would be negligible as:

  1. Updates are infrequent (lifecycle events, one-time state changes)
  2. The atomic variables are used for control flow rather than in hot paths
  3. The implementation uses kotlinx.atomicfu which optimizes atomic operations for each platform
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for atomic variable usage patterns
ast-grep --pattern 'atomic($$$)' 

Length of output: 1070


Script:

#!/bin/bash
# Get context around atomic usages to understand access patterns
rg "atomic\(" -A 5 -B 5

Length of output: 8667

core/src/commonMain/kotlin/pro/respawn/flowmvi/exceptions/InternalStoreExceptions.kt (1)

61-62: LGTM! Appropriate API visibility.

The @PublishedApi internal annotation correctly exposes this exception for inline functions while maintaining encapsulation.

buildSrc/src/main/kotlin/ConfigureMultiplatform.kt (1)

25-25: LGTM! Good flexibility for API visibility configuration.

The addition of the explicitApi parameter with a sensible default maintains backward compatibility while providing flexibility when explicit API mode is not desired.

Also applies to: 29-29

core/src/jvmTest/kotlin/pro/respawn/flowmvi/test/store/StoreLaunchTest.kt (1)

28-32: LGTM! Clear test store configuration.

The store configuration is explicit and the allowIdleSubscriptions = true setting is appropriate for testing launch behavior.

core/src/jvmTest/kotlin/pro/respawn/flowmvi/test/store/StoreStatesTest.kt (1)

31-35: Verify performance implications of disabled parallel intents

Setting parallelIntents = false could have significant performance implications in real-world scenarios.

Let's verify the impact:

✅ Verification successful

Let's examine the benchmark implementations to understand the performance implications better.


Let's check the benchmark implementations and their results to understand the performance characteristics.


Based on the analysis of the benchmark implementations and store configurations, I can now provide a final response:

Setting parallelIntents = false is an intentional optimization, not a performance concern

The benchmark implementations show that parallelIntents = false is used in optimized store configurations (OptimizedStore.kt and AtomicStore.kt) specifically designed for performance testing. This setting is actually part of the performance-optimized configuration, as sequential processing of intents can prevent overhead from concurrent intent handling when it's not needed. The test is correctly configured for its purpose.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for other test files that might be affected by parallel intent processing
rg -l "parallelIntents\s*=\s*(true|false)" --type kotlin

# Look for performance-related test cases
rg -l "performance|benchmark" --type kotlin

Length of output: 3722


Script:

#!/bin/bash
# Check benchmark implementations for parallel vs sequential processing
rg -A 10 "parallelIntents\s*=\s*(true|false)" benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/

# Look for any performance comparison documentation
cat benchmarks/README.md 2>/dev/null || true

Length of output: 2816


Script:

#!/bin/bash
# Check benchmark implementation details
rg -A 15 "class.*Benchmark" benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/
rg -A 5 "benchmark" benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/Main.kt

Length of output: 11613

debugger/debugger-client/src/commonMain/kotlin/pro/respawn/flowmvi/debugger/client/DebugClientStore.kt (1)

50-50: LGTM: Efficient UUID generation

The change to use Kotlin's built-in Uuid.random() is a good optimization as it removes external dependency and uses platform-optimized implementation.

debugger/server/src/commonMain/kotlin/pro/respawn/flowmvi/debugger/server/DebugServerStore.kt (2)

24-24: LGTM: Import changes align with project-wide updates

The transition to kotlin.uuid.Uuid and addition of updateStateImmediate import reflect the project's move towards using Kotlin's built-in UUID functionality and performance optimizations.

Also applies to: 28-28


Line range hint 47-48: Verify performance impact of immediate state updates

The use of updateStateImmediate for state transitions is appropriate here as these operations need to be fast. However, let's verify the performance improvement.

✅ Verification successful

No performance concerns with immediate state updates in this context

The use of updateStateImmediate is correctly applied in the server state transitions for StopRequested -> Idle and ServerStarted -> Running. These are critical paths where immediate updates are necessary. The error state update in the reviewed code doesn't require immediate processing as it's not in a performance-critical path.

Looking at the codebase:

  • Critical state transitions using updateStateImmediate are limited to server start/stop operations
  • Regular updateState is used appropriately for error handling and UI state updates
  • No patterns found where immediate updates would provide meaningful performance benefits
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Check for other potential immediate state update candidates
# Look for patterns that might benefit from immediate updates

# Search for updateState calls that might benefit from immediate updates
rg "updateState.*Idle|Running" --type kotlin

# Look for other state transitions that might need immediate updates
ast-grep --pattern 'updateState { $_ }'

Length of output: 19078

core/src/commonMain/kotlin/pro/respawn/flowmvi/dsl/StateDsl.kt (3)

19-30: LGTM: Well-documented unsafe state access

The documentation clearly warns about the risks of using this property, including race conditions and plugin circumvention. The implementation is appropriate for performance-critical scenarios.


74-82: LGTM: Type-safe immediate state updates

The typed version of updateStateImmediate with @JvmName annotation prevents signature conflicts and maintains type safety.


32-55: Verify thread safety of immediate state updates

The implementation of updateStateImmediate looks correct with its use of CAS operations. However, we should verify its usage patterns for potential race conditions.

Consider adding a warning in the documentation about using this in coroutine scopes where multiple updates might occur simultaneously.

✅ Verification successful

Based on the search results, I can now provide a final response:

Thread safety of updateStateImmediate is properly implemented and documented

The implementation uses a Compare-and-Set (CAS) operation in a retry loop, which is a thread-safe approach. The code is used appropriately in the codebase with clear documentation about its limitations:

  • It's primarily used in performance-critical scenarios (e.g., benchmarks)
  • Used in UI state updates where immediate feedback is needed (e.g., input forms)
  • Documentation explicitly warns about non-atomic behavior in coroutine contexts
  • No evidence of parallel/concurrent usage that could lead to race conditions
  • The code is marked with @DelicateStoreApi indicating its careful usage requirements

The original review comment's concern about adding a warning is already addressed in the existing documentation which clearly states it "ignores ALL plugins and does not perform a serializable state transaction."

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Check for potential race conditions in immediate state updates
# Look for parallel state update scenarios

# Search for parallel state update patterns
ast-grep --pattern 'launch { $$ updateStateImmediate { $$ } }'

# Look for coroutine scope usage with immediate updates
rg "coroutineScope.*updateStateImmediate" --type kotlin -A 3

Length of output: 127


Script:

#!/bin/bash
# Let's search for any usage patterns of updateStateImmediate
rg "updateStateImmediate" --type kotlin -B 2 -A 2

# Look for concurrent usage in test files
rg "updateStateImmediate.*launch|launch.*updateStateImmediate" --type kotlin

# Search for any parallel processing hints
rg "parallel.*updateStateImmediate|updateStateImmediate.*parallel" --type kotlin

# Look for actual implementations using this method
ast-grep --pattern 'fun $_ ($$$) {
  $$$
  updateStateImmediate {
    $$$
  }
  $$$
}'

Length of output: 25069

buildSrc/src/main/kotlin/Config.kt (1)

23-23: LGTM: Version and API updates

The version bump to beta05 and addition of ExperimentalUuidApi to optIns are appropriate for the performance improvements and UUID implementation changes.

Also applies to: 48-48

✅ Verification successful

Version and UUID API changes are correctly configured

The verification confirms:

  • The version postfix "-beta05" is consistently defined only in Config.kt and not hardcoded elsewhere
  • The ExperimentalUuidApi opt-in is appropriately configured in Config.kt to support the UUID usage across multiple debugger modules
  • All UUID-related imports use the kotlin.uuid package, which requires the experimental API opt-in
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Verify consistent version usage across the project
# Look for any mismatched versions

# Search for version references
rg "beta0[45]" --type kotlin --type gradle

# Check for UUID API usage
rg "ExperimentalUuidApi" --type kotlin

Length of output: 250


Script:

#!/bin/bash
# Let's verify if there are any direct version references or UUID usages in the codebase
# that might be affected by these changes

# Search for any direct version strings that might need updating
rg "beta0[0-9]" --type-add 'props:*.properties' --type props --type gradle --type kotlin

# Look for UUID related imports and usages
rg "import.*uuid" --type kotlin
rg "UUID" --type kotlin -B 1 -A 1

Length of output: 2753

debugger/ideplugin/src/main/resources/LiveTemplates.xml (5)

2-2: LGTM! Enhanced imports improve template usability.

The addition of updateState and withState imports provides direct access to essential state management utilities, improving the template's functionality.


11-13: LGTM! Improved plugin naming flexibility.

The addition of the optional name parameter with a default value derived from PluginName enhances plugin configuration flexibility while maintaining backward compatibility.


16-18: LGTM! Consistent naming pattern implementation.

The changes mirror those in the fmvip template, maintaining consistency across the codebase.


21-24: LGTM! Well-structured model template.

The new fmvim template provides a standardized structure for MVI model definitions, promoting consistency across the codebase.


25-31: LGTM! Well-designed decorator template.

The new fmvid template provides a comprehensive structure for creating decorators, including:

  • Proper documentation placeholders
  • Appropriate context restrictions
  • Consistent naming patterns
build.gradle.kts (1)

20-25: LGTM! Plugin configuration aligns with benchmarking objectives.

The addition of atomicfu, compose.compiler, and kotlin.benchmark plugins with apply false directive provides the necessary tools for performance benchmarking while maintaining proper plugin isolation.

core/src/commonMain/kotlin/pro/respawn/flowmvi/dsl/StoreConfigurationBuilder.kt (4)

46-59: LGTM! Well-documented state strategy implementation.

The new stateStrategy property provides a clear and flexible way to configure state management, with comprehensive documentation explaining available options.


96-107: LGTM! Clear documentation for transient subscriptions.

The allowTransientSubscriptions property is well-documented, explaining its purpose and default behavior clearly.


144-156: LGTM! Proper deprecation handling.

The deprecation of atomicStateUpdates is handled correctly with:

  • Clear deprecation message
  • Proper replacement suggestion
  • Backward-compatible getter/setter implementation

171-175: LGTM! Configuration updates maintain consistency.

The configuration builder's invoke method properly integrates the new properties while maintaining consistent default behaviors.

debugger/debugger-client/src/commonMain/kotlin/pro/respawn/flowmvi/debugger/client/DebuggerPlugin.kt (2)

29-29: LGTM! Explicit import improves code clarity.

Making the updateStateImmediate import explicit helps with code maintainability and readability.


64-64: LGTM! Explicit context reference prevents potential ambiguity.

The addition of this@ctx qualifier makes the context reference explicit, which is a good practice in Kotlin, especially within coroutine scopes where multiple receivers might be in scope.

gradle/libs.versions.toml (2)

35-35: LGTM! Benchmark-related additions align with PR objectives.

The addition of the Kotlin benchmark dependency and plugin (kotlin-benchmark = "0.4.13") aligns well with the PR's focus on performance benchmarking. This is a stable version of the benchmarking library.

Also applies to: 72-72, 153-153


148-149: LGTM! Plugin renames follow standard naming conventions.

The renaming of plugins to use hyphenated format:

  • kotlinMultiplatformkotlin-multiplatform
  • serializationkotlin-serialization
    follows the standard Kotlin plugin naming conventions and improves consistency.

Also applies to: 151-151

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Actionable comments posted: 3

🧹 Outside diff range and nitpick comments (4)
.github/workflows/benchmarks.yml (3)

3-6: Consider adding pull_request trigger for benchmark comparisons

Currently only running on pushes to master. Adding pull_request trigger would allow comparing benchmark results between PR changes and master branch.

on:
  push:
    branches: [ master ]
+  pull_request:
+    branches: [ master ]

8-10: Consider specifying a consistent runner for reproducible benchmarks

Using ubuntu-latest may lead to inconsistent benchmark results as the runner specifications can vary. Consider using a specific GitHub-hosted runner or self-hosted runner with consistent specifications.

jobs:
  benchmark:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04

33-40: Optimize Konan cache configuration

The current cache key might be too broad. Consider:

  1. Including Gradle wrapper version in the cache key
  2. Adding more specific path patterns for Konan files
      - name: Cache konan directory
        uses: actions/cache@v4
        with:
          path: ~/.konan
-          key: ${{ runner.os }}-konan-${{ hashFiles('*.gradle.kts', 'buildSrc/*') }}
+          key: ${{ runner.os }}-konan-${{ hashFiles('gradle/wrapper/gradle-wrapper.properties', '**/*.gradle.kts', 'buildSrc/**/*.kt') }}
          restore-keys: |
            ${{ runner.os }}-konan-
benchmarks/build.gradle.kts (1)

31-33: Consider additional JVM args for consistent benchmarking

Add more JVM arguments to reduce noise in benchmark results:

  1. Disable background compilation
  2. Set specific garbage collection parameters
tasks.withType<JavaExec>().configureEach {
-    jvmArgs("-Dkotlinx.coroutines.debug=off")
+    jvmArgs(
+        "-Dkotlinx.coroutines.debug=off",
+        "-XX:+UseParallelGC",
+        "-XX:-BackgroundCompilation",
+        "-XX:+DisableAttachMechanism"
+    )
}
📜 Review details

Configuration used: CodeRabbit UI
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📥 Commits

Reviewing files that changed from the base of the PR and between 70c11bb and e3aad21.

📒 Files selected for processing (7)
  • .github/workflows/benchmarks.yml (1 hunks)
  • benchmarks/build.gradle.kts (1 hunks)
  • benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/Main.kt (1 hunks)
  • benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/atomic/AtomicFMVIBenchmark.kt (1 hunks)
  • benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/atomic/AtomicStore.kt (1 hunks)
  • benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/fluxo/FluxoIntentBenchmark.kt (1 hunks)
  • benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/optimized/OptimizedStore.kt (1 hunks)
🚧 Files skipped from review as they are similar to previous changes (5)
  • benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/Main.kt
  • benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/atomic/AtomicFMVIBenchmark.kt
  • benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/atomic/AtomicStore.kt
  • benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/fluxo/FluxoIntentBenchmark.kt
  • benchmarks/src/jvmMain/kotlin/pro/respawn/flowmvi/benchmarks/setup/optimized/OptimizedStore.kt
🔇 Additional comments (1)
.github/workflows/benchmarks.yml (1)

17-23: Verify Java 22 compatibility

Java 22 is a very recent release. Ensure all dependencies and tooling are compatible with this version. Consider using LTS version 21 for better stability.

✅ Verification successful

Let me check the Java version configuration in more detail.


Let me check the Gradle configuration to see if there are any version-specific settings.


Based on the analysis of the codebase, I can now provide a final response:

Java 22 is safe to use in this CI workflow

The codebase is configured to use Java 11 as its minimum compatibility version, and Gradle 8.11.1 fully supports Java 22. The CI workflow is only using Java 22 to run Gradle tasks, not for compilation. The actual compilation and runtime targets are controlled by:

  • jvmTarget = JVM_11
  • javaVersion = JavaVersion.VERSION_11

Since the codebase maintains Java 11 compatibility and Gradle 8.11+ supports Java 22, using Java 22 in the CI environment is safe and won't cause compatibility issues.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Check Gradle wrapper and plugin compatibility with Java 22
grep -r "sourceCompatibility" .
grep -r "targetCompatibility" .

Length of output: 779


Script:

#!/bin/bash
# Check Java version configuration in Config files
fd Config.kt --exec cat {}

Length of output: 6184


Script:

#!/bin/bash
# Check Gradle configuration files
fd build.gradle.kts --exec cat {}
cat gradle/wrapper/gradle-wrapper.properties 2>/dev/null || true

Length of output: 34654

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@Nek-12 Nek-12 added the autorelease Automatically create a release using PR title label Dec 8, 2024
@Nek-12 Nek-12 added this to the 3.1 milestone Dec 8, 2024
@Nek-12 Nek-12 merged commit cde594a into master Dec 8, 2024
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@Nek-12 Nek-12 deleted the 3.1.0-beta05 branch December 8, 2024 14:41
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