refactor: use an LLM to satisfy most detekt issues#428
Merged
nicolasfara merged 5 commits intoreimplementationfrom Mar 26, 2026
Merged
refactor: use an LLM to satisfy most detekt issues#428nicolasfara merged 5 commits intoreimplementationfrom
nicolasfara merged 5 commits intoreimplementationfrom
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| GitGuardian id | GitGuardian status | Secret | Commit | Filename | |
|---|---|---|---|---|---|
| 29200675 | Triggered | Generic Password | 93c341d | mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/packet/Connect.kt | View secret |
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Pull request overview
This PR performs a major refactor of the codebase: it removes the prior single-module, platform-specific MQTT client implementations and replaces them with a new multi-module architecture (mktt-core for protocol/codec + mktt-client for a coroutine/Flow-based client), along with updated build configuration, dependencies, and tests.
Changes:
- Split the project into
:mktt-coreand:mktt-client, updating Gradle settings/build logic and dependency catalog. - Introduce MQTT v5 protocol types/packets + encode/decode utilities in
mktt-core, and a new Ktor-socket-based client + engine abstraction inmktt-client. - Replace the prior end-to-end tests with deterministic codec tests, fake-engine client tests, and Mosquitto (Testcontainers) integration tests.
Reviewed changes
Copilot reviewed 65 out of 65 changed files in this pull request and generated 4 comments.
Show a summary per file
| File | Description |
|---|---|
| src/jvmTest/kotlin/io/github/nicolasfara/MqttClientTestJvm.kt | Removes old JVM test suite |
| src/jvmMain/kotlin/io/github/nicolasfara/utils/JavaKotlinUtils.kt | Removes JVM helper utilities |
| src/jvmMain/kotlin/io/github/nicolasfara/adapter/MqttWillAdapter.kt | Removes HiveMQ will adapter |
| src/jvmMain/kotlin/io/github/nicolasfara/MkttClient.jvm.kt | Removes old JVM actual factory |
| src/jvmMain/kotlin/io/github/nicolasfara/HivemqMkttClient.kt | Removes HiveMQ-based client |
| src/jsMain/kotlin/io/github/nicolasfara/facade/MqttJsFacade.kt | Removes MQTT.js externals |
| src/jsMain/kotlin/io/github/nicolasfara/adapter/MkttJsAdapter.kt | Removes MQTT.js config adapter |
| src/jsMain/kotlin/io/github/nicolasfara/MqttJsClient.kt | Removes MQTT.js client impl |
| src/jsMain/kotlin/io/github/nicolasfara/MkttClient.js.kt | Removes old JS actual factory |
| src/commonTest/kotlin/io/github/nicolasfara/configuration/MqttTestConfiguration.kt | Removes old test config |
| src/commonTest/kotlin/io/github/nicolasfara/MqttClientTest.kt | Removes old common tests |
| src/commonTest/kotlin/io/github/nicolasfara/MqttClientSubscribeTest.kt | Removes old subscribe tests |
| src/commonTest/kotlin/io/github/nicolasfara/MqttClientPublishTest.kt | Removes old publish tests |
| src/commonMain/kotlin/io/github/nicolasfara/MqttWill.kt | Removes old will model |
| src/commonMain/kotlin/io/github/nicolasfara/MqttQoS.kt | Removes old QoS enum |
| src/commonMain/kotlin/io/github/nicolasfara/MqttMessage.kt | Removes old message model |
| src/commonMain/kotlin/io/github/nicolasfara/MqttConnectionState.kt | Removes old connection state |
| src/commonMain/kotlin/io/github/nicolasfara/MqttClientConfiguration.kt | Removes old config DSL |
| src/commonMain/kotlin/io/github/nicolasfara/MkttClient.kt | Removes old client API |
| settings.gradle.kts | Adds repo mgmt + includes modules |
| mktt-core/build.gradle.kts | New KMP build for core module |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/util/String.kt | MQTT string encoding/decoding utils |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/util/MqttDslMarker.kt | DSL marker for builders |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/util/Logger.kt | Minimal common logger facade |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/util/Int.kt | Variable-byte-int codec utilities |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/util/ByteString.kt | MQTT bytestring codec utilities |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/packet/Unsubscribe.kt | UNSUBSCRIBE packet + codec |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/packet/Unsuback.kt | UNSUBACK packet + helpers |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/packet/Subscribe.kt | SUBSCRIBE packet + codec |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/packet/Suback.kt | SUBACK packet + helpers |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/packet/Publish.kt | PUBLISH packet + codec |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/packet/Pingresp.kt | PINGRESP packet |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/packet/Pingreq.kt | PINGREQ packet |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/packet/PacketType.kt | Packet type enum + decoding |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/packet/PacketIdentifierPacket.kt | Marker for packets with IDs |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/packet/Packet.kt | Packet I/O over Ktor channels |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/packet/Disconnect.kt | DISCONNECT packet + codec |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/packet/Connect.kt | CONNECT packet + codec |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/packet/Connack.kt | CONNACK packet + codec |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/packet/BasePacket.kt | Base packet implementation |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/packet/Auth.kt | AUTH packet + codec |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/WillProperties.kt | Will properties + DSL builder |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/WillMessage.kt | Will message + codec + DSL |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/UserProperties.kt | User properties model + DSL |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/TopicFilter.kt | Topic filter model + DSL |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/Topic.kt | Topic value class + helpers |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/SubscriptionOptions.kt | Subscription options model |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/StringPair.kt | MQTT string pair model + codec |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/SessionStore.kt | Session store interface |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/RetainHandling.kt | Retain handling enum |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/QoS.kt | New QoS enum |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/Preconditions.kt | Malformed/well-formed helpers |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/InFlightPacket.kt | In-flight packet tracking types |
| mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/Exceptions.kt | Protocol/client exception types |
| mktt-core/src/commonTest/kotlin/io/github/nicolasfara/mktt/core/util/StringTest.kt | String codec tests |
| mktt-core/src/commonTest/kotlin/io/github/nicolasfara/mktt/core/util/IntTest.kt | Variable int codec tests |
| mktt-core/src/commonTest/kotlin/io/github/nicolasfara/mktt/core/util/ByteStringTest.kt | ByteString codec tests |
| mktt-core/src/commonTest/kotlin/io/github/nicolasfara/mktt/core/packet/UnsubscribeTest.kt | UNSUBSCRIBE round-trip tests |
| mktt-core/src/commonTest/kotlin/io/github/nicolasfara/mktt/core/packet/UnsubackTest.kt | UNSUBACK round-trip tests |
| mktt-core/src/commonTest/kotlin/io/github/nicolasfara/mktt/core/packet/SubscribeTest.kt | SUBSCRIBE round-trip tests |
| mktt-core/src/commonTest/kotlin/io/github/nicolasfara/mktt/core/packet/SubackTest.kt | SUBACK round-trip tests |
| mktt-core/src/commonTest/kotlin/io/github/nicolasfara/mktt/core/packet/PublishTest.kt | PUBLISH tests + invariants |
| mktt-core/src/commonTest/kotlin/io/github/nicolasfara/mktt/core/packet/PublishResponseTest.kt | PUBACK/REC/REL/COMP tests |
| mktt-core/src/commonTest/kotlin/io/github/nicolasfara/mktt/core/packet/DisconnectTest.kt | DISCONNECT tests |
| mktt-core/src/commonTest/kotlin/io/github/nicolasfara/mktt/core/packet/ConnectTest.kt | CONNECT encoding/decoding tests |
| mktt-core/src/commonTest/kotlin/io/github/nicolasfara/mktt/core/packet/ConnackTest.kt | CONNACK tests |
| mktt-core/src/commonTest/kotlin/io/github/nicolasfara/mktt/core/packet/AuthTest.kt | AUTH tests |
| mktt-core/src/commonTest/kotlin/io/github/nicolasfara/mktt/core/packet/Assertions.kt | Shared encode/decode assertion |
| mktt-core/src/commonTest/kotlin/io/github/nicolasfara/mktt/core/TopicTest.kt | Topic parsing helper tests |
| mktt-core/src/commonTest/kotlin/io/github/nicolasfara/mktt/core/StringPairTest.kt | StringPair codec tests |
| mktt-core/src/commonTest/kotlin/io/github/nicolasfara/mktt/core/SessionExpiryIntervalTest.kt | Session expiry interval tests |
| mktt-core/src/commonTest/kotlin/io/github/nicolasfara/mktt/core/ServerReferenceTest.kt | Server reference parsing tests |
| mktt-core/src/commonTest/kotlin/io/github/nicolasfara/mktt/core/ReceiveMaximumTest.kt | ReceiveMaximum invariant test |
| mktt-core/src/commonTest/kotlin/io/github/nicolasfara/mktt/core/MaximumPacketSizeTest.kt | MaximumPacketSize invariant test |
| mktt-client/build.gradle.kts | New KMP build for client module |
| mktt-client/src/jvmTest/resources/server.key | Adds Mosquitto TLS private key |
| mktt-client/src/jvmTest/resources/server.crt | Adds Mosquitto TLS certificate |
| mktt-client/src/jvmTest/resources/passwd | Adds Mosquitto password file |
| mktt-client/src/jvmTest/resources/mosquitto.conf | Adds Mosquitto config |
| mktt-client/src/jvmTest/resources/client.key | Adds client TLS private key |
| mktt-client/src/jvmTest/resources/client.crt | Adds client TLS certificate |
| mktt-client/src/jvmTest/resources/ca.crt | Adds CA certificate |
| mktt-client/src/jvmTest/resources/Dockerfile | Adds Mosquitto test image |
| mktt-client/src/jvmTest/kotlin/io/github/nicolasfara/mktt/client/NoTrustManager.kt | Test trust manager helper |
| mktt-client/src/jvmTest/kotlin/io/github/nicolasfara/mktt/client/MqttClientIntegrationTest.kt | JVM Mosquitto integration tests |
| mktt-client/src/jvmTest/kotlin/io/github/nicolasfara/mktt/client/MosquittoContainer.kt | Testcontainers Mosquitto wrapper |
| mktt-client/src/commonTest/kotlin/io/github/nicolasfara/mktt/client/RemoteBrokerIntegrationTest.kt | External broker integration test |
| mktt-client/src/commonTest/kotlin/io/github/nicolasfara/mktt/client/MqttClientTest.kt | Fake-engine client behavior tests |
| mktt-client/src/commonTest/kotlin/io/github/nicolasfara/mktt/client/FakeMqttEngine.kt | Fake engine for tests |
| mktt-client/src/commonMain/kotlin/io/github/nicolasfara/mktt/client/PublishResponse.kt | Publish response result types |
| mktt-client/src/commonMain/kotlin/io/github/nicolasfara/mktt/client/PublishRequest.kt | Publish DSL request model |
| mktt-client/src/commonMain/kotlin/io/github/nicolasfara/mktt/client/MqttEngineFactory.kt | Engine factory abstraction |
| mktt-client/src/commonMain/kotlin/io/github/nicolasfara/mktt/client/MqttEngine.kt | Engine interface abstraction |
| mktt-client/src/commonMain/kotlin/io/github/nicolasfara/mktt/client/MqttClientConfig.kt | Client config DSL + immutable config |
| mktt-client/src/commonMain/kotlin/io/github/nicolasfara/mktt/client/InMemorySessionStore.kt | Session store implementation |
| mktt-client/src/commonMain/kotlin/io/github/nicolasfara/mktt/client/Hashing.kt | Shared hash helper |
| mktt-client/src/commonMain/kotlin/io/github/nicolasfara/mktt/client/DefaultEngineFactory.kt | Default engine factory/config |
| mktt-client/src/commonMain/kotlin/io/github/nicolasfara/mktt/client/DefaultEngine.kt | Ktor socket-based engine |
| mktt-client/src/commonMain/kotlin/io/github/nicolasfara/mktt/client/ConnectionState.kt | Client state + message model |
| gradle/libs.versions.toml | Replaces deps (Arrow/HiveMQ → Ktor/kotlinx-io/Testcontainers) |
| build.gradle.kts | Simplifies root build; moves config to subprojects |
| README.md | Updates docs for new modules/APIs |
| .editorconfig | Updates ktlint/IDE formatting settings |
Comments suppressed due to low confidence (3)
mktt-core/src/commonMain/kotlin/io/github/nicolasfara/mktt/core/packet/PacketType.kt:84
_root_ide_package_is not valid Kotlin and will not compile. Replace this with the real exception type (e.g.,io.github.nicolasfara.mktt.core.MalformedPacketException) and ensure the proper import/qualification is used.
mktt-core/src/commonTest/kotlin/io/github/nicolasfara/mktt/core/util/StringTest.kt:20- Typo in comment: "teh" → "the".
mktt-core/src/commonTest/kotlin/io/github/nicolasfara/mktt/core/packet/ConnectTest.kt:181 - This test prints to stdout (
println(actual)), which can add noise and slow down CI. Please remove the print or replace it with assertions if you intended to verify something about the decoded packet.
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| "Packets without packet identifier cannot be part of a transaction" | ||
| } | ||
|
|
||
| return !incomingPackets.add(packetIdentifier) |
There was a problem hiding this comment.
rememberIncomingPacketId returns the opposite of what the SessionStore contract documents. MutableSet.add returns true when the id was NOT present; the current !incomingPackets.add(...) therefore returns false for first-seen packets and true for re-deliveries. Flip the boolean (or rename the method/adjust KDoc) so callers can correctly detect duplicates.
Suggested change
| return !incomingPackets.add(packetIdentifier) | |
| return incomingPackets.add(packetIdentifier) |
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| class RemoteBrokerIntegrationTest { | ||
| @Test | ||
| fun `connects to public test broker and exchanges a message`() = runTest { | ||
| withContext(Dispatchers.Default.limitedParallelism(1)) { | ||
| val topicName = "mktt/remote-test/${Random.nextLong().toString(16)}" | ||
| val filter = TopicFilter( | ||
| Topic(topicName), | ||
| ) | ||
| val subscriber = | ||
| MqttClient(TEST_BROKER_HOST, TEST_BROKER_PORT) { | ||
| clientId = "mktt-remote-sub-${Random.nextLong().toString(16)}" | ||
| } | ||
| val publisher = | ||
| MqttClient(TEST_BROKER_HOST, TEST_BROKER_PORT) { | ||
| clientId = "mktt-remote-pub-${Random.nextLong().toString(16)}" | ||
| } | ||
| val dispatcher = coroutineContext[ContinuationInterceptor] as CoroutineDispatcher | ||
| val topicName = "mktt/remote-test/${Random.nextLong().toString(16)}" | ||
| val filter = TopicFilter( | ||
| Topic(topicName), | ||
| ) | ||
| val subscriber = | ||
| MqttClient(TEST_BROKER_HOST, TEST_BROKER_PORT) { | ||
| this.dispatcher = dispatcher | ||
| clientId = "mktt-remote-sub-${Random.nextLong().toString(16)}" | ||
| } |
There was a problem hiding this comment.
This integration test depends on an external public broker (test.mosquitto.org) and is not guarded by a skip flag, making the build flaky/offline-hostile. Consider moving it to a dedicated integration-test source set, or add an env-based skip (similar to SKIP_INTEGRATION_TEST) so regular CI/unit test runs don’t rely on external network availability.
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| /** | ||
| * Writes the specified string as an MQTT string, hence writing first the size of the string, then the ZTF-8 encoded | ||
| * string. | ||
| * |
There was a problem hiding this comment.
KDoc typo: this says "ZTF-8" but should be "UTF-8".
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| private fun consoleLog(throwable: Throwable?, message: () -> String) { | ||
| // Keep this logger as a no-op while still consuming parameters for static analysis. | ||
| throwable?.let(::println) | ||
| throwable?.let { | ||
| println(message()) | ||
| throwable.printStackTrace() | ||
| } |
There was a problem hiding this comment.
The comment says the logger is a no-op, but it currently prints to stdout/stderr (and only logs when throwable != null). Either make this truly a no-op, or update the implementation to log messages consistently (and adjust the comment accordingly) so behavior matches the intent.
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