Create release plugin

Fixes #28

release/build.gradle.kts

@@ -0,0 +1,11 @@
+plugins {
+    kotlin("jvm")
+    id("org.jetbrains.dokka") version "1.9.10"
+}
+apply(plugin = "org.gradle.kotlin.kotlin-dsl")
+
+description = "Configures Gradle Release plugin for usage in CI"
+
+dependencies {
+    implementation("net.researchgate", "gradle-release", "3.0.2")
+}

release/src/main/kotlin/com/bakdata/gradle/ReleasePlugin.kt

@@ -0,0 +1,54 @@
+/*
+ * The MIT License
+ *
+ * Copyright (c) 2024 bakdata GmbH
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package com.bakdata.gradle
+
+import net.researchgate.release.ReleaseExtension
+import org.gradle.api.GradleException
+import org.gradle.api.Plugin
+import org.gradle.api.Project
+import org.gradle.kotlin.dsl.apply
+import org.gradle.kotlin.dsl.configure
+
+class ReleasePlugin : Plugin<Project> {
+
+    override fun apply(rootProject: Project) {
+        if (rootProject.parent != null) {
+            throw GradleException("Apply this plugin only to the top-level project.")
+        }
+
+        with(rootProject) {
+            apply(plugin = "net.researchgate.release")
+
+            val disablePushToRemote: String? = project.property("disablePushToRemote") as? String
+            disablePushToRemote?.let {
+                configure<ReleaseExtension> {
+                    git {
+                        pushToRemote.set(!it.toBoolean())
+                    }
+                }
+            }
+        }
+    }
+}

release/src/test/kotlin/com/bakdata/gradle/ReleasePluginTest.kt

@@ -0,0 +1,66 @@
+/*
+ * The MIT License
+ *
+ * Copyright (c) 2024 bakdata GmbH
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package com.bakdata.gradle
+
+import net.researchgate.release.ReleasePlugin
+import org.assertj.core.api.Assertions.assertThat
+import org.assertj.core.api.Assertions.assertThatCode
+import org.assertj.core.api.Condition
+import org.assertj.core.api.SoftAssertions
+import org.gradle.api.Project
+import org.gradle.api.internal.project.DefaultProject
+import org.gradle.testfixtures.ProjectBuilder
+import org.junit.jupiter.api.Test
+
+internal class ReleasePluginTest {
+
+    private fun Project.evaluate() {
+        (this as DefaultProject).evaluate()
+    }
+
+    @Test
+    fun testSingleModuleProjectWithJavaFirst() {
+        val project = ProjectBuilder.builder().build()
+
+        assertThatCode {
+            project.pluginManager.apply("com.bakdata.release")
+            project.evaluate()
+        }.doesNotThrowAnyException()
+
+        SoftAssertions.assertSoftly { softly ->
+            softly.assertThat(project.plugins)
+                .haveExactly(1, Condition({ it is ReleasePlugin }, "Has release plugin"))
+        }
+    }
+
+    @Test
+    fun testWrongApplicationInMultiModuleProject() {
+        val parent = ProjectBuilder.builder().withName("parent").build()
+        val child1 = ProjectBuilder.builder().withName("child1").withParent(parent).build()
+
+        assertThatCode { child1.pluginManager.apply("com.bakdata.release") }
+            .satisfies { assertThat(it.cause).hasMessageContaining("top-level project") }
+    }
+}

release/src/test/resources/META-INF/gradle-plugins/com.bakdata.release.properties

@@ -0,0 +1 @@
+implementation-class=com.bakdata.gradle.ReleasePlugin

settings.gradle

@@ -7,4 +7,4 @@ pluginManagement {
 
 rootProject.name = 'gradle-plugins'
 
-include 'sonar', 'sonatype'
+include 'sonar', 'sonatype', 'release'