build.gradle

/*
 * Copyright 2019 Aiven Oy
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import org.gradle.util.VersionNumber

plugins {
    // https://docs.gradle.org/current/userguide/java_library_plugin.html
    id 'java-library'

    // https://docs.gradle.org/current/userguide/distribution_plugin.html
    id 'distribution'

    // https://docs.gradle.org/current/userguide/checkstyle_plugin.html
    id 'checkstyle'

    // https://docs.gradle.org/current/userguide/idea_plugin.html
    id 'idea'

    // https://ajoberstar.org/grgit/grgit-gradle.html
    id 'org.ajoberstar.grgit' version '3.1.1'
}

repositories {
    jcenter()
}

sourceCompatibility = JavaVersion.VERSION_1_8
targetCompatibility = JavaVersion.VERSION_1_8

ext {
    kafkaVersion = "2.0.1"

    testcontainersVersion = "1.12.1"
}

distributions {
    main {
        contents {
            from jar
            from configurations.runtimeClasspath
        }
    }
}

sourceSets {
    integrationTest {
        java.srcDir file('src/integration-test/java')
        resources.srcDir file('src/integration-test/resources')
        compileClasspath += sourceSets.main.output + configurations.testRuntime
        runtimeClasspath += output + compileClasspath
    }
}

idea {
    module {
        testSourceDirs += project.sourceSets.integrationTest.java.srcDirs
        testSourceDirs += project.sourceSets.integrationTest.resources.srcDirs
    }
}

configurations {
    integrationTestImplementation.extendsFrom testImplementation
    integrationTestRuntime.extendsFrom testRuntime
}

dependencies {
    compileOnly "org.apache.kafka:connect-api:$kafkaVersion"

    implementation "org.slf4j:slf4j-api:1.7.25"

    testImplementation "org.junit.jupiter:junit-jupiter:5.5.1"
    testImplementation "org.hamcrest:hamcrest:2.1"
    testImplementation "org.apache.kafka:connect-api:$kafkaVersion"
    testImplementation "org.testcontainers:junit-jupiter:$testcontainersVersion"

    testRuntime "org.apache.logging.log4j:log4j-slf4j-impl:2.12.1"
    testRuntime "org.apache.logging.log4j:log4j-api:2.12.1"
    testRuntime "org.apache.logging.log4j:log4j-core:2.12.1"

    integrationTestImplementation "org.apache.kafka:connect-api:$kafkaVersion"
    integrationTestImplementation("org.apache.kafka:connect-runtime:$kafkaVersion") {
        exclude group: "org.slf4j", module: "slf4j-log4j12"
    }
    integrationTestImplementation "org.apache.kafka:connect-json:$kafkaVersion"
    integrationTestImplementation "org.apache.kafka:connect-transforms:$kafkaVersion"

    integrationTestImplementation "org.testcontainers:junit-jupiter:$testcontainersVersion"
    integrationTestImplementation "org.testcontainers:kafka:$testcontainersVersion" // this is not Kafka version
    // Make test utils from 'test' available in 'integration-test'
    integrationTestImplementation sourceSets.test.output
}

checkstyle {
    toolVersion "8.21"
}

task integrationTest(type: Test) {
    description = 'Runs the integration tests.'
    group = 'verification'
    testClassesDirs = sourceSets.integrationTest.output.classesDirs
    classpath = sourceSets.integrationTest.runtimeClasspath

    dependsOn test, distTar

    useJUnitPlatform()

    // Run always.
    outputs.upToDateWhen { false }

    // Pass the distribution file path to the tests.
    systemProperty("integration-test.distribution.file.path", distTar.archiveFile.get().asFile.path)
    systemProperty("integration-test.classes.path", sourceSets.integrationTest.output.classesDirs.getAsPath())
}
check.dependsOn integrationTest

test {
    useJUnitPlatform {
        includeEngines 'junit-jupiter'
    }
}

processResources {
    filesMatching('aiven-kafka-connect-transforms-version.properties') {
        expand(version: version)
    }
}

jar {
    manifest {
        attributes(
                'Version': "${getArchiveVersion()}"
        )
    }
}

task releaseCommitsAndTag() {
    description 'Make release commits and the tag necessary for release'
    group 'GitHub release'

    doFirst {
        checkReleasePrerequisites()
    }

    outputs.upToDateWhen {
        def tag = releaseTag()
        def tagExists = grgit.tag.list().stream().anyMatch { it.getName() == tag }
        if (tagExists) {
            logger.quiet("Tag $tag exists")
        }
        return tagExists
    }

    doLast {
        def releaseMessage = "Release version $releaseVersion"
        def tag = releaseTag()

        setVersionInGradleProperties(releaseVersion)

        logger.quiet('Committing')
        grgit.add(patterns: ['gradle.properties'])
        grgit.commit(message: releaseMessage)

        logger.quiet('Tagging with tag {}', tag)
        grgit.tag.add(name: tag, annotate: true, message: releaseMessage)

        setVersionInGradleProperties(nextSnapshotVersion)

        logger.quiet('Committing')
        grgit.add(patterns: ['gradle.properties'])
        grgit.commit(message: "Bump version to $nextSnapshotVersion")
    }
}

def checkReleasePrerequisites() {
    if (!project.hasProperty('releaseVersion')) {
        throw new GradleException('releaseVersion property is not set')
    }

    if (!(releaseVersion ==~ /\d+\.\d+\.\d+/)) {
        throw new GradleException("Invalid releaseVersion format, must be 'x.y.z'")
    }

    if (!project.hasProperty('nextSnapshotVersion')) {
        throw new GradleException('nextSnapshotVersion property is not set')
    }

    if (!(nextSnapshotVersion ==~ /\d+\.\d+\.\d+-SNAPSHOT/)) {
        throw new GradleException("Invalid nextSnapshotVersion format, must be 'x.y.z-SNAPSHOT'")
    }

    def releaseVersionParsed = VersionNumber.parse(releaseVersion)
    def nextSnapshotVersionParsed = VersionNumber.parse(nextSnapshotVersion)
    if (nextSnapshotVersionParsed.getBaseVersion() <= releaseVersionParsed.getBaseVersion()) {
        throw new GradleException('Next snapshot version must be higher than release version')
    }

    if (grgit.branch.current().getName() != 'master') {
        throw new GradleException("Repository must be on branch 'master'")
    }
}

def setVersionInGradleProperties(ver) {
    logger.quiet('Changing version in gradle.properties to {}', ver)
    file('gradle.properties.new').withWriter { writer ->
        file('gradle.properties').eachLine { line ->
            if (line ==~ /version=.*/) {
                writer.writeLine("version=${ver}")
            } else {
                writer.writeLine(line)
            }
        }
    }
    file('gradle.properties.new').renameTo('gradle.properties')
}

task releasePush() {
    description 'Push commits and release tag'
    group 'GitHub release'

    dependsOn releaseCommitsAndTag

    outputs.upToDateWhen {
        return false
    }

    doLast {
        def githubRepo = 'https://github.com/aiven/aiven-kafka-connect-transforms'

        grgit.push(tags: false, dryRun: false)
        grgit.push(tags: true, dryRun: false)
        logger.warn('Please visit {}/releases/tag/{} and add the distribution files and changelog', githubRepo, releaseTag())
    }

}

def releaseTag() {
    return 'v' + releaseVersion
}