GitHubMilestoneNextVersionDueTodayTask Outputs to File

Rather than having the task fail if the milestone is not due today, it now
outputs to a file true or false. This allows the pipeline to determine
if it should continue or not without causing a failure.

Issue gh-11158

buildSrc/src/main/java/org/springframework/gradle/github/milestones/GitHubMilestoneNextVersionDueTodayTask.java

@@ -22,16 +22,21 @@ import org.gradle.api.file.RegularFileProperty;
 import org.gradle.api.tasks.Input;
 import org.gradle.api.tasks.InputFile;
 import org.gradle.api.tasks.Optional;
+import org.gradle.api.tasks.OutputFile;
 import org.gradle.api.tasks.TaskAction;
+import org.gradle.work.DisableCachingByDefault;
 import org.yaml.snakeyaml.Yaml;
 import org.yaml.snakeyaml.constructor.Constructor;
 
 import java.io.File;
 import java.io.FileInputStream;
-import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
 
 import org.springframework.gradle.github.RepositoryRef;
 
+@DisableCachingByDefault(because = "the due date needs to be checked every time in case it changes")
 public abstract class GitHubMilestoneNextVersionDueTodayTask extends DefaultTask {
 
 	@Input
@@ -44,10 +49,13 @@ public abstract class GitHubMilestoneNextVersionDueTodayTask extends DefaultTask
 	@InputFile
 	public abstract RegularFileProperty getNextVersionFile();
 
+	@OutputFile
+	public abstract RegularFileProperty getIsDueTodayFile();
+
 	private GitHubMilestoneApi milestones = new GitHubMilestoneApi();
 
 	@TaskAction
-	public void checkReleaseDueToday() throws FileNotFoundException {
+	public void checkReleaseDueToday() throws IOException {
 		File nextVersionFile = getNextVersionFile().getAsFile().get();
 		Yaml yaml = new Yaml(new Constructor(NextVersionYml.class));
 		NextVersionYml nextVersionYml = yaml.load(new FileInputStream(nextVersionFile));
@@ -57,12 +65,17 @@ public abstract class GitHubMilestoneNextVersionDueTodayTask extends DefaultTask
 					"Could not find version property in provided file " + nextVersionFile.getName());
 		}
 		boolean milestoneDueToday = this.milestones.isMilestoneDueToday(this.repository, nextVersion);
-		if (!milestoneDueToday) {
-			throw new IllegalStateException("The milestone with the title " + nextVersion + " in the repository "
+		Path isDueTodayPath = getIsDueTodayFile().getAsFile().get().toPath();
+		Files.writeString(isDueTodayPath, String.valueOf(milestoneDueToday));
+		if (milestoneDueToday) {
+			System.out.println("The milestone with the title " + nextVersion + " in the repository " + this.repository
+					+ " is due today");
+		}
+		else {
+			System.out.println("The milestone with the title " + nextVersion + " in the repository "
 					+ this.repository + " is not due yet");
 		}
-		System.out.println("The milestone with the title " + nextVersion + " in the repository " + this.repository
-				+ " is due today");
+
 	}
 
 	public RepositoryRef getRepository() {

buildSrc/src/main/java/org/springframework/gradle/github/milestones/GitHubMilestonePlugin.java

@@ -59,6 +59,7 @@ public class GitHubMilestonePlugin implements Plugin<Project> {
 					public void execute(GitHubMilestoneNextVersionDueTodayTask gitHubMilestoneNextVersionDueTodayTask) {
 						gitHubMilestoneNextVersionDueTodayTask.setGroup("Release");
 						gitHubMilestoneNextVersionDueTodayTask.setDescription("Checks if the next release version is due today or past due, will fail if the next version is not due yet");
+						gitHubMilestoneNextVersionDueTodayTask.getIsDueTodayFile().value(project.getLayout().getBuildDirectory().file("github/milestones/is-due-today"));
 						gitHubMilestoneNextVersionDueTodayTask.getNextVersionFile().convention(
 								nextReleaseMilestoneTask.flatMap(GitHubMilestoneNextReleaseTask::getNextReleaseFile));
 						if (project.hasProperty("gitHubAccessToken")) {