Added functionality to obtain release tickets for GitHub tracker.

Enabled changelog and release ticket caching got GitHubIssueTracker.

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

@@ -32,7 +32,7 @@ import org.springframework.util.StringUtils;
  */
 @Component
 @RequiredArgsConstructor(onConstructor = @__(@Autowired))
-class GiCommands implements CommandMarker {
+public class GitCommands implements CommandMarker {
 
 	private final GitOperations git;
 

src/main/java/org/springframework/data/release/jira/GitHubIssue.java

@@ -17,6 +17,8 @@ package org.springframework.data.release.jira;
 
 import lombok.Data;
 
+import org.springframework.data.release.model.ModuleIteration;
+
 /**
  * @author Oliver Gierke
  */
@@ -25,4 +27,12 @@ class GitHubIssue {
 
 	private String number;
 	private String title;
+
+	public String getId() {
+		return "#".concat(number);
+	}
+
+	public boolean isReleaseTicket(ModuleIteration module) {
+		return title.contains("Release") && title.contains(module.getVersionString());
+	}
 }

src/main/java/org/springframework/data/release/jira/GitHubIssueTracker.java

@@ -25,6 +25,7 @@ import java.util.Map;
 import lombok.RequiredArgsConstructor;
 
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.cache.annotation.Cacheable;
 import org.springframework.context.ConfigurableApplicationContext;
 import org.springframework.context.support.ClassPathXmlApplicationContext;
 import org.springframework.core.ParameterizedTypeReference;
@@ -33,6 +34,7 @@ import org.springframework.data.release.git.GitServer;
 import org.springframework.data.release.model.Iteration;
 import org.springframework.data.release.model.ModuleIteration;
 import org.springframework.data.release.model.Project;
+import org.springframework.data.release.model.Projects;
 import org.springframework.data.release.model.ReleaseTrains;
 import org.springframework.data.release.model.Tracker;
 import org.springframework.data.release.model.TrainIteration;
@@ -58,27 +60,36 @@ class GitHubIssueTracker implements IssueTracker {
 	private final RestOperations operations;
 	private final Logger logger;
 
+	/* 
+	 * (non-Javadoc)
+	 * @see org.springframework.data.release.jira.IssueTracker#getReleaseTicketFor(org.springframework.data.release.model.ModuleIteration)
+	 */
+	@Override
+	@Cacheable("release-tickets")
+	public Ticket getReleaseTicketFor(ModuleIteration module) {
+
+		for (GitHubIssue issue : getIssuesFor(module)) {
+			if (issue.isReleaseTicket(module)) {
+				return new Ticket(issue.getId(), issue.getTitle());
+			}
+		}
+
+		throw new IllegalArgumentException(String.format("Could not find a release ticket for %s!", module));
+	}
+
 	/* 
 	 * (non-Javadoc)
 	 * @see org.springframework.data.release.jira.IssueTracker#getChangelogFor(org.springframework.data.release.model.ModuleIteration)
 	 */
 	@Override
+	@Cacheable("changelogs")
 	public Changelog getChangelogFor(ModuleIteration module) {
 
-		String repositoryName = new GitProject(module.getProject(), new GitServer()).getRepositoryName();
-
-		GitHubMilestone milestone = findMilestone(module, repositoryName);
-
-		Map<String, Object> parameters = new HashMap<>();
-		parameters.put("repoName", repositoryName);
-		parameters.put("id", milestone.getNumber());
-
-		List<GitHubIssue> issues = operations.exchange(URI_TEMPLATE, HttpMethod.GET, null, ISSUES_TYPE, parameters)
-				.getBody();
+		List<GitHubIssue> issues = getIssuesFor(module);
 		List<Ticket> tickets = new ArrayList<>(issues.size());
 
 		for (GitHubIssue issue : issues) {
-			tickets.add(new Ticket("#" + issue.getNumber(), issue.getTitle()));
+			tickets.add(new Ticket(issue.getId(), issue.getTitle()));
 		}
 
 		logger.log(module, "Created changelog with %s entries.", tickets.size());
@@ -95,6 +106,19 @@ class GitHubIssueTracker implements IssueTracker {
 		return project.uses(Tracker.GITHUB);
 	}
 
+	private List<GitHubIssue> getIssuesFor(ModuleIteration module) {
+
+		String repositoryName = new GitProject(module.getProject(), new GitServer()).getRepositoryName();
+
+		GitHubMilestone milestone = findMilestone(module, repositoryName);
+
+		Map<String, Object> parameters = new HashMap<>();
+		parameters.put("repoName", repositoryName);
+		parameters.put("id", milestone.getNumber());
+
+		return operations.exchange(URI_TEMPLATE, HttpMethod.GET, null, ISSUES_TYPE, parameters).getBody();
+	}
+
 	private GitHubMilestone findMilestone(ModuleIteration module, String repositoryName) {
 
 		for (String state : Arrays.asList("close", "open")) {
@@ -132,12 +156,15 @@ class GitHubIssueTracker implements IssueTracker {
 		try (ConfigurableApplicationContext context = new ClassPathXmlApplicationContext(
 				"META-INF/spring/spring-shell-plugin.xml")) {
 
-			GitHubIssueTracker tracker = context.getBean(GitHubIssueTracker.class);
+			IssueTracker tracker = context.getBean("gitHubIssueTracker", IssueTracker.class);
 
 			TrainIteration iteration = new TrainIteration(ReleaseTrains.CODD, Iteration.SR2);
-			Changelog changelog = tracker.getChangelogFor(iteration.getModule("Build"));
+			ModuleIteration module = iteration.getModule(Projects.BUILD);
 
+			Changelog changelog = tracker.getChangelogFor(module);
 			System.out.println(changelog);
+
+			System.out.println(tracker.getReleaseTicketFor(module));
 		}
 	}
 }

src/main/java/org/springframework/data/release/jira/IssueTracker.java

@@ -24,5 +24,13 @@ import org.springframework.plugin.core.Plugin;
  */
 public interface IssueTracker extends Plugin<Project> {
 
+	/**
+	 * Returns the {@link Ticket} that tracks modifications in the context of a release.
+	 * 
+	 * @param module the module to lookup the {@link Ticket} for.
+	 * @return
+	 */
+	Ticket getReleaseTicketFor(ModuleIteration module);
+
 	Changelog getChangelogFor(ModuleIteration iteration);
 }

src/main/java/org/springframework/data/release/jira/Jira.java

@@ -175,6 +175,7 @@ class Jira implements JiraConnector {
 	 * @see org.springframework.data.release.jira.JiraConnector#getChangelogFor(org.springframework.data.release.model.Module, org.springframework.data.release.model.Iteration)
 	 */
 	@Override
+	@Cacheable("changelogs")
 	public Changelog getChangelogFor(ModuleIteration module) {
 
 		Map<String, Object> parameters = new HashMap<>();

src/main/java/org/springframework/data/release/jira/JiraConnector.java

@@ -16,7 +16,6 @@
 package org.springframework.data.release.jira;
 
 import org.springframework.data.release.model.Iteration;
-import org.springframework.data.release.model.ModuleIteration;
 import org.springframework.data.release.model.Train;
 import org.springframework.data.release.model.TrainIteration;
 
@@ -27,8 +26,6 @@ public interface JiraConnector extends IssueTracker {
 
 	void reset();
 
-	Ticket getReleaseTicketFor(ModuleIteration iteration);
-
 	/**
 	 * Returns all {@link Tickets} for the given {@link Train} and {@link Iteration}.
 	 *