Refactor GPG key handling to allow using separate GPG keys.

Closes #7

src/main/java/org/springframework/data/release/build/MavenBuildSystem.java

@@ -40,7 +40,6 @@ import javax.xml.transform.dom.DOMSource;
 import javax.xml.transform.stream.StreamResult;
 
 import org.apache.commons.io.IOUtils;
-
 import org.springframework.core.annotation.Order;
 import org.springframework.core.env.Environment;
 import org.springframework.data.release.build.CommandLine.Argument;
@@ -49,6 +48,7 @@ import org.springframework.data.release.build.Pom.Artifact;
 import org.springframework.data.release.deployment.DefaultDeploymentInformation;
 import org.springframework.data.release.deployment.DeploymentInformation;
 import org.springframework.data.release.deployment.DeploymentProperties;
+import org.springframework.data.release.deployment.DeploymentProperties.MavenCentral;
 import org.springframework.data.release.deployment.StagingRepository;
 import org.springframework.data.release.io.Workspace;
 import org.springframework.data.release.model.ArtifactVersion;
@@ -63,7 +63,6 @@ import org.springframework.data.release.utils.Logger;
 import org.springframework.stereotype.Component;
 import org.springframework.util.Assert;
 import org.springframework.util.ObjectUtils;
-
 import org.xmlbeam.ProjectionFactory;
 import org.xmlbeam.XBProjector;
 import org.xmlbeam.dom.DOMAccess;
@@ -418,6 +417,8 @@ class MavenBuildSystem implements BuildSystem {
 
 		logger.log(BUILD, "Verifying Maven Build System…");
 
+		Gpg gpg = getGpg();
+
 		CommandLine arguments = CommandLine.of(Goal.CLEAN, Goal.VERIFY, //
 				profile("central"), //
 				SKIP_TESTS, //
@@ -488,6 +489,8 @@ class MavenBuildSystem implements BuildSystem {
 
 		logger.log(module, "Deploying artifacts to Sonatype OSS Nexus…");
 
+		Gpg gpg = getGpg();
+
 		CommandLine arguments = CommandLine.of(Goal.CLEAN, Goal.DEPLOY, //
 				profile("ci,release,central"), //
 				SKIP_TESTS, //
@@ -510,6 +513,17 @@ class MavenBuildSystem implements BuildSystem {
 		doWithProjection(file, Pom.class, callback);
 	}
 
+	private Gpg getGpg() {
+
+		MavenCentral mavenCentral = properties.getMavenCentral();
+
+		if (mavenCentral.hasGpgConfiguration()) {
+			return mavenCentral.getGpg();
+		}
+
+		return gpg;
+	}
+
 	/**
 	 * TODO: Move XML file callbacks using the {@link ProjectionFactory} to {@link Workspace}.
 	 */

src/main/java/org/springframework/data/release/deployment/DeploymentProperties.java

@@ -15,17 +15,18 @@
  */
 package org.springframework.data.release.deployment;
 
-import lombok.Data;
-
 import java.net.URI;
 
 import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.data.release.model.Gpg;
 import org.springframework.data.release.model.Password;
 import org.springframework.data.release.utils.HttpBasicCredentials;
 import org.springframework.stereotype.Component;
 import org.springframework.util.Assert;
 import org.springframework.web.util.UriTemplate;
 
+import lombok.Data;
+
 /**
  * @author Oliver Gierke
  * @author Mark Paluch
@@ -126,6 +127,11 @@ public class DeploymentProperties {
 
 		private String stagingProfileId;
 
+		private Gpg gpg;
+
+		public boolean hasGpgConfiguration() {
+			return gpg != null && gpg.isGpgAvailable();
+		}
 	}
 
 }

src/main/java/org/springframework/data/release/git/GitOperations.java

@@ -25,7 +25,19 @@ import java.io.FileOutputStream;
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;
 import java.time.LocalDateTime;
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Comparator;
+import java.util.Date;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Locale;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+import java.util.TimeZone;
+import java.util.UUID;
 import java.util.concurrent.Executor;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.function.Predicate;
@@ -58,7 +70,6 @@ import org.eclipse.jgit.transport.CredentialsProvider;
 import org.eclipse.jgit.transport.RefSpec;
 import org.eclipse.jgit.transport.TagOpt;
 import org.eclipse.jgit.transport.URIish;
-
 import org.springframework.data.release.io.Workspace;
 import org.springframework.data.release.issues.IssueTracker;
 import org.springframework.data.release.issues.Ticket;
@@ -697,6 +708,8 @@ public class GitOperations {
 		String email = gitProperties.getEmail();
 		boolean allowEmpty = all;
 
+		Gpg gpg = getGpg();
+
 		logger.log(project, "git commit -m \"%s\" %s --author=\"%s <%s>\"", commit.getSummary(),
 				gpg.isGpgAvailable() ? "-S" + gpg.getKeyname() : "", author, email);
 
@@ -1077,6 +1090,15 @@ public class GitOperations {
 		void doWithGit(Git git) throws Exception;
 	}
 
+	private Gpg getGpg() {
+
+		if (gitProperties.hasGpgConfiguration()) {
+			return gitProperties.getGpg();
+		}
+
+		return gpg;
+	}
+
 	/**
 	 * {@link CredentialsProvider} for GPG Keys used with JGit Commit Signing.
 	 */
@@ -1127,8 +1149,4 @@ public class GitOperations {
 			return false;
 		}
 	}
-
-	private static class VersionedIterations {
-
-	}
 }

src/main/java/org/springframework/data/release/git/GitProperties.java

@@ -24,6 +24,7 @@ import javax.annotation.PostConstruct;
 import org.eclipse.jgit.transport.CredentialsProvider;
 import org.eclipse.jgit.transport.UsernamePasswordCredentialsProvider;
 import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.data.release.model.Gpg;
 import org.springframework.data.release.model.Password;
 import org.springframework.data.release.utils.HttpBasicCredentials;
 import org.springframework.stereotype.Component;
@@ -43,6 +44,8 @@ public class GitProperties {
 	private @Getter(AccessLevel.PRIVATE) Password password;
 	private String username, author, email;
 
+	private Gpg gpg;
+
 	@PostConstruct
 	public void init() {
 
@@ -64,4 +67,8 @@ public class GitProperties {
 	public HttpBasicCredentials getHttpCredentials() {
 		return new HttpBasicCredentials(username, password);
 	}
+
+	public boolean hasGpgConfiguration() {
+		return gpg != null && gpg.isGpgAvailable();
+	}
 }

src/main/java/org/springframework/data/release/issues/github/GitHub.java

@@ -614,7 +614,7 @@ public class GitHub extends GitHubSupport implements IssueTracker {
 			throw new IllegalStateException(String.format("Cannot obtain /user. Status: %s", entity.getStatusCode()));
 		}
 
-		logger.log("GitHub", "Authentication verified!");
+		logger.log("GitHub", "Authentication verified.");
 	}
 
 	private String getDocumentationLinks(ModuleIteration module, DocumentationMetadata documentation) {

src/main/resources/application-jenkins.properties

@@ -3,7 +3,10 @@ git.author=${GIT_AUTHOR}
 git.email=${GIT_EMAIL}
 git.password=${GIT_PASSWORD}
 
-github.api.url=${GITHUB_API_URL}
+git.gpg.keyname=6743E1BD
+git.gpg.passphrase=${GIT_SIGNING_KEY_PASSWORD}
+git.gpg.secretKeyring=${GNUPGHOME}/secring.gpg
+git.gpg.executable=/usr/bin/gpg
 
 deployment.username=${DEPLOYMENT_API_KEY_USR}
 deployment.password=${DEPLOYMENT_API_KEY_PSW}
@@ -22,5 +25,10 @@ maven.home=${MAVEN_HOME}
 maven.console-logger=false
 maven.repo.local=${RELEASE_TOOLS_CACHE}
 
+maven.maven-central.gpg.keyname=${GPG_KEYNAME}
+maven.maven-central.gpg.passphrase=${PASSPHRASE}
+maven.maven-central.gpg.secretKeyring=${GNUPGHOME}/secring.gpg
+maven.maven-central.gpg.executable=/usr/bin/gpg
+
 io.workDir=dist
 io.logs=${LOGS_DIR}