output released version in github actions environement (#737)

* output released version in GitHub actions environment

Author: bgalek

build.gradle.kts

@@ -75,10 +75,12 @@ dependencies {
     }
     testImplementation("org.testcontainers:spock:1.17.6")
     testImplementation("org.spockframework:spock-core:2.3-groovy-3.0")
+    testImplementation("org.spockframework:spock-junit4:2.3-groovy-3.0")
     testImplementation("cglib:cglib-nodep:3.3.0")
     testImplementation("org.objenesis:objenesis:3.3")
     testImplementation("org.apache.sshd:sshd-core:2.12.1")
     testImplementation("org.apache.sshd:sshd-git:2.12.1")
+    testImplementation("com.github.stefanbirkner:system-rules:1.19.0")
     testImplementation(gradleTestKit())
 }
 

src/integration/groovy/pl/allegro/tech/build/axion/release/SimpleIntegrationTest.groovy

@@ -1,6 +1,8 @@
 package pl.allegro.tech.build.axion.release
 
 import org.gradle.testkit.runner.TaskOutcome
+import org.junit.Rule
+import org.junit.contrib.java.lang.system.EnvironmentVariables
 
 import java.nio.charset.StandardCharsets
 import java.nio.file.Files
@@ -9,6 +11,9 @@ import static pl.allegro.tech.build.axion.release.TagPrefixConf.fullPrefix
 
 class SimpleIntegrationTest extends BaseIntegrationTest {
 
+    @Rule
+    EnvironmentVariables environmentVariablesRule = new EnvironmentVariables();
+
     def "should return default version on calling currentVersion task on vanilla repo"() {
         given:
         buildFile('')
@@ -34,6 +39,24 @@ class SimpleIntegrationTest extends BaseIntegrationTest {
         result.task(":currentVersion").outcome == TaskOutcome.SUCCESS
     }
 
+    def "should define a github output when running release task in github workflow context"() {
+        given:
+        def outputFile = File.createTempFile("github-outputs", ".tmp")
+        environmentVariablesRule.set("GITHUB_ACTIONS", "true")
+        environmentVariablesRule.set("GITHUB_OUTPUT", outputFile.getAbsolutePath())
+
+        buildFile('')
+
+        when:
+        runGradle('release', '-Prelease.version=1.0.0', '-Prelease.localOnly', '-Prelease.disableChecks')
+
+        then:
+        outputFile.getText().contains('released-version=1.0.0')
+
+        cleanup:
+        environmentVariablesRule.clear("GITHUB_ACTIONS", "GITHUB_OUTPUT")
+    }
+
     def "should return released version on calling cV on repo with release commit"() {
         given:
         buildFile('')
@@ -95,7 +118,7 @@ class SimpleIntegrationTest extends BaseIntegrationTest {
         def result = gradle().withArguments('cV').buildAndFail()
 
         then:
-        result.output.contains(fullPrefix() +'blabla')
+        result.output.contains(fullPrefix() + 'blabla')
     }
 
     def "should use initial version setting"() {

src/main/groovy/pl/allegro/tech/build/axion/release/OutputCurrentVersionTask.groovy

@@ -17,7 +17,7 @@ abstract class OutputCurrentVersionTask extends BaseAxionTask {
     @Inject
     OutputCurrentVersionTask() {
         this.outputs.upToDateWhen { false }
-        getQuiet().convention(providers.gradleProperty("release.quiet").map({true})
+        getQuiet().convention(providers.gradleProperty("release.quiet").map({ true })
             .orElse(false))
     }
 

src/main/groovy/pl/allegro/tech/build/axion/release/ReleasePlugin.groovy

@@ -22,7 +22,7 @@ abstract class ReleasePlugin implements Plugin<Project> {
 
         def versionConfig = project.extensions.create(VERSION_EXTENSION, VersionConfig, project.rootProject.layout.projectDirectory)
 
-        project.tasks.withType(BaseAxionTask).configureEach( {
+        project.tasks.withType(BaseAxionTask).configureEach({
             it.versionConfig = versionConfig
         })
 

src/main/groovy/pl/allegro/tech/build/axion/release/ReleaseTask.groovy

@@ -5,6 +5,10 @@ import pl.allegro.tech.build.axion.release.domain.Releaser
 import pl.allegro.tech.build.axion.release.domain.scm.ScmPushResult
 import pl.allegro.tech.build.axion.release.infrastructure.di.VersionResolutionContext
 
+import java.nio.file.Files
+import java.nio.file.Paths
+import java.nio.file.StandardOpenOption
+
 abstract class ReleaseTask extends BaseAxionTask {
 
     @TaskAction
@@ -13,12 +17,20 @@ abstract class ReleaseTask extends BaseAxionTask {
         Releaser releaser = context.releaser()
         ScmPushResult result = releaser.releaseAndPush(context.rules())
 
-        if(!result.success) {
+        if (!result.success) {
             def status = result.failureStatus.orElse("Unknown status of push")
             def message = result.remoteMessage.orElse("Unknown error during push")
             logger.error("remote status: ${status}")
             logger.error("remote message: ${message}")
             throw new ReleaseFailedException("Status: ${status}\nMessage: ${message}")
         }
+
+        if (System.getenv().containsKey('GITHUB_ACTIONS')) {
+            Files.write(
+                Paths.get(System.getenv('GITHUB_OUTPUT')),
+                "released-version=${versionConfig.version}\n".getBytes(),
+                StandardOpenOption.APPEND
+            )
+        }
     }
 }