add an option to create annotated tags

README.md

@@ -159,6 +159,7 @@ spotlessChangelog { // all defaults
   // keep changelog formatted
   changelogFile 'CHANGELOG.md'
   enforceCheck true
+  annotateTags false  
   // calculate next version (breaking.added.fixed)
   ifFoundBumpBreaking ['**BREAKING**']
   ifFoundBumpAdded    ['### Added']

spotless-changelog-lib/src/main/java/com/diffplug/spotless/changelog/GitActions.java

@@ -97,9 +97,10 @@ public void addAndCommit() throws GitAPIException {
 				.call();
 	}
 
-	/** Tags and pushes the tag and the branch. */
-	public void tagBranchPush() throws GitAPIException {
-		Ref tagRef = git.tag().setName(tagName()).setAnnotated(false).call();
+	/** Tags and pushes the tag and the branch.
+	 * @param annotated false for lightweight tags, true for annotated tags */
+	public void tagBranchPush(final boolean annotated) throws GitAPIException {
+		Ref tagRef = git.tag().setName(tagName()).setAnnotated(annotated).call();
 		push(tagRef, RemoteRefUpdate.Status.OK);
 		push(cfg.branch, RemoteRefUpdate.Status.OK);
 	}

spotless-changelog-plugin-gradle/src/main/java/com/diffplug/spotless/changelog/gradle/ChangelogExtension.java

@@ -40,6 +40,7 @@ public class ChangelogExtension {
 	NextVersionCfg nextVersionCfg;
 	GitCfg gitCfg;
 	boolean enforceCheck;
+	boolean annotateTags = false;
 
 	public ChangelogExtension(Project project) {
 		this.project = Objects.requireNonNull(project);
@@ -109,6 +110,11 @@ public void enforceCheck(boolean enforceCheck) {
 		this.enforceCheck = enforceCheck;
 	}
 
+	/** Determines whether tags are lightweight (false) or annotated (true).  Default is false. */
+	public void annotateTags(boolean annotateTags) {
+		this.annotateTags = annotateTags;
+	}
+
 	/**
 	 * Sets a custom {@link NextVersionFunction} by calling the public no-arg constructor of the given class.
 	 * Default value is {@link com.diffplug.spotless.changelog.NextVersionFunction.Semver Semver}.

spotless-changelog-plugin-gradle/src/main/java/com/diffplug/spotless/changelog/gradle/ChangelogPlugin.java

@@ -181,7 +181,7 @@ public void push() throws IOException, GitAPIException {
 			assertNotSnapshot();
 			GitActions git = extension.gitCfg.withChangelog(extension.changelogFile, extension.model());
 			git.addAndCommit();
-			git.tagBranchPush();
+			git.tagBranchPush(extension.annotateTags);
 		}
 	}
 }