Compilation of gradle Java 11 project failed

[mdddj]

Describe the bug

Compilation failed in gradle configuration project

Reproduction and additional details

Could not determine the dependencies of task ':prepareSandbox'.
> Could not resolve all files for configuration ':runtimeClasspath'.
   > Could not resolve org.hildan.krossbow:krossbow-websocket-okhttp:4.5.0.
     Required by:
         project :
      > No matching variant of org.hildan.krossbow:krossbow-websocket-okhttp:4.5.0 was found. The consumer was configured to find a runtime of a library compatible with Java 11, packaged as a jar, preferably optimized for standard JVMs, and its dependencies declared externally, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'jvm' but:
          - Variant 'apiElements' capability org.hildan.krossbow:krossbow-websocket-okhttp:4.5.0 declares a library, packaged as a jar, preferably optimized for standard JVMs, and its dependencies declared externally, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'jvm':
              - Incompatible because this component declares an API of a component compatible with Java 17 and the consumer needed a runtime of a component compatible with Java 11
          - Variant 'runtimeElements' capability org.hildan.krossbow:krossbow-websocket-okhttp:4.5.0 declares a runtime of a library, packaged as a jar, preferably optimized for standard JVMs, and its dependencies declared externally, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'jvm':
              - Incompatible because this component declares a component compatible with Java 17 and the consumer needed a component compatible with Java 11
          - Variant 'sourcesElements' capability org.hildan.krossbow:krossbow-websocket-okhttp:4.5.0 declares a runtime of a component, and its dependencies declared externally:
              - Incompatible because this component declares documentation and the consumer needed a library
              - Other compatible attributes:
                  - Doesn't say anything about its target Java environment (preferred optimized for standard JVMs)
                  - Doesn't say anything about its target Java version (required compatibility with Java 11)
                  - Doesn't say anything about its elements (required them packaged as a jar)
                  - Doesn't say anything about org.jetbrains.kotlin.platform.type (required 'jvm')

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Context

• Krossbow version: 4.5.0
• Krossbow artifacts used: krossbow-stomp-core,krossbow-websocket-okhttp
• Kotlin version: 1.7.20
• Kotlin target(s):

my config file

plugins {
    id("java")
    id("org.jetbrains.kotlin.jvm") version "1.7.20"
    id("org.jetbrains.intellij") version "1.12.0"
}

repositories {
    mavenCentral()
    google()
    maven { url = uri("https://maven.pkg.jetbrains.space/public/p/compose/dev") }
    maven {
        url = uri("https://plugins.gradle.org/m2/")
    }
}
java{
    sourceCompatibility = JavaVersion.VERSION_11
}



dependencies {
    implementation("com.squareup.retrofit2:retrofit:2.9.0")
    implementation("com.squareup.retrofit2:converter-gson:2.9.0")
    implementation ("com.squareup.retrofit2:converter-scalars:2.9.0")
    implementation("com.github.ben-manes.caffeine:caffeine:3.1.2")
    implementation("cn.hutool:hutool-all:5.8.11")
    implementation("org.smartboot.socket:aio-core:1.6.1")
    implementation("com.alibaba.fastjson2:fastjson2:2.0.22")
    implementation("com.alibaba.fastjson2:fastjson2-kotlin:2.0.22")
    implementation("org.apache.commons:commons-lang3:3.12.0")
    implementation("com.google.code.gson:gson:2.10.1")
    implementation("com.fasterxml.jackson.core:jackson-databind:2.14.0")
    implementation("org.hildan.krossbow:krossbow-stomp-core:4.5.0")
    implementation("org.hildan.krossbow:krossbow-websocket-okhttp:4.5.0")
    implementation("com.google.guava:guava:31.1-jre")
}


var javaVersion = "11"

tasks {
    withType<JavaCompile> {
        sourceCompatibility = javaVersion
        targetCompatibility = javaVersion
    }
    withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile> {
        kotlinOptions.jvmTarget = javaVersion
    }

    withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile>().configureEach {
        kotlinOptions.freeCompilerArgs += "-opt-in=kotlin.RequiresOptIn"
    }

    listProductsReleases {
    }


    runIde {
        autoReloadPlugins.set(true)
    }


    buildSearchableOptions {
        enabled = false
    }

    compileKotlin {
        kotlinOptions.jvmTarget = javaVersion
    }

    compileTestKotlin {
        kotlinOptions.jvmTarget = javaVersion
    }
}

[joffrey-bion]

Thanks for the report, I made a mistake in the CI config and I'm now publishing with byte code level 17. This was unintentional.

I'll release a patch for java 11 compatibility

[joffrey-bion]

It turns out there are some issues with the new macos runners that are only fixed with Kotlin 1.8. I will first migrate to Kotlin 1.8 and then will be able to move forward with the JDK 11 CI setup, sorry.

The Gradle error for reference:

* What went wrong:
Execution failed for task ':krossbow-websocket-builtin:allTests'.
> Failed to execute all tests:
  :krossbow-websocket-builtin:watchosX64Test: java.lang.IllegalStateException: command '/usr/bin/xcrun' exited with errors (exit code: 148)

It happens on GitHub Actions macos-12 runner. Should be solved in Kotlin 1.8, see https://youtrack.jetbrains.com/issue/KT-54814

[mdddj]

Ok, thank you for your reply. I will upgrade kotlin to 1.8

[joffrey-bion]

Sorry if I was unclear. I meant the issues on GA runner prevent me from releasing a patch for krossbow. So I will upgrade Krossbow to Kotlin 1.8 in order to fix the build and be able to release again. I didn't mean you should upgrade on your side to fix the java 11 issue.

That being said, the next version of krossbow with jdk11 support will indeed be using kotlin 1.8, so you might need to upgrade on your side when upgrading krossbow.

[mdddj]

Thank you for your reminder. I understand. Now I temporarily remove this dependency to solve the problem, and add it again after the dependency version is upgraded

[joffrey-bion]

@mdddj Actually, I double checked, and despite the CI using JDK 17 to compile the classes, the default Kotlin target JVM bytecode was still Java 8. I just checked the class files from org.hildan.krossbow:krossbow-websocket-okhttp:4.5.0 and they are indeed at class version 52.0:

OkHttpWebSocketClient.class: compiled Java class data, version 52.0 (Java 1.8)
KrossbowToOkHttpListenerAdapter.class: compiled Java class data, version 52.0 (Java 1.8)

I released Krossbow version 5.0.0 which compiled all artifacts on CI using JDK 11, but the result is the same: java 8 compatible bytecode by default.

I think your issue might be that you're using an old Gradle version that doesn't recognize the metadata properly.

Could you please check the following:

1. try with Krossbow 5.0.0 and your current Gradle version
2. try with Krossbow 4.5.0 and Gradle 7.6
3. try with Krossbow 5.0.0 and Gradle 7.6

Do you still have the error in either of those? I would assume you have the same error in 1) but the error is gone in 2) and 3). Is this correct?

[mdddj]

After I upgrade, there are no problems with the above three points

[joffrey-bion]

After you upgrade what exactly? Some of the points are about not upgrading