Add task repository for pull requests.

Initially supports:

* Editing summary & description
* Browsing & adding comments
* Browsing & opening associated commits
* Closing & re-opening the pull request
* Checking out the pull request's commits into a topic branch
* Fetching pull request commits
* Generating a context with the files modified in the pull request

Change-Id: Iba75e999353dbc5d095dc95dd2977e9f21d694e6
Signed-off-by: Kevin Sawicki <kevin@github.com>

17 files changed, 1048 insertions, 68 deletions

diff --git a/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/GitHub.java b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/GitHub.java
index a98bbca2..5867f795 100644
--- a/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/GitHub.java
+++ b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/GitHub.java
@@ -32,25 +32,28 @@ import org.eclipse.mylyn.tasks.core.TaskRepository;
 public class GitHub {
 
 	/** BUNDLE_ID */
-	public static final String BUNDLE_ID = "org.eclipse.mylyn.github.core";
+	public static final String BUNDLE_ID = "org.eclipse.mylyn.github.core"; //$NON-NLS-1$
 
 	/** CONNECTOR_KIND */
-	public static final String CONNECTOR_KIND = "github";
+	public static final String CONNECTOR_KIND = "github"; //$NON-NLS-1$
 
 	/** HTTP_WWW_GITHUB_ORG */
-	public static final String HTTP_WWW_GITHUB_ORG = "http://www.github.org";
+	public static final String HTTP_WWW_GITHUB_ORG = "http://www.github.org"; //$NON-NLS-1$
 
 	/** HTTP_GITHUB_COM */
-	public static final String HTTP_GITHUB_COM = "http://github.com";
+	public static final String HTTP_GITHUB_COM = "http://github.com"; //$NON-NLS-1$
 
 	/** URL_PATTERN */
-	public static final Pattern URL_PATTERN = Pattern.compile("(?:"
-			+ Pattern.quote(HTTP_WWW_GITHUB_ORG) + "|"
-			+ Pattern.quote(HTTP_GITHUB_COM) + ")/([^/]+)/([^/]+)");
+	public static final Pattern URL_PATTERN = Pattern.compile("(?:" //$NON-NLS-1$
+			+ Pattern.quote(HTTP_WWW_GITHUB_ORG) + "|" //$NON-NLS-1$
+			+ Pattern.quote(HTTP_GITHUB_COM) + ")/([^/]+)/([^/]+)"); //$NON-NLS-1$
 
 	/** USER_AGENT */
 	public static final String USER_AGENT = "GitHubEclipse/1.1.0"; //$NON-NLS-1$
 
+	/** REPOSITORY_SEGMENTS */
+	public static final String REPOSITORY_SEGMENTS = "/user/repository"; //$NON-NLS-1$
+
 	/**
 	 * Configure client with standard configuration
 	 * 
@@ -130,7 +133,7 @@ public class GitHub {
 	 */
 	public static IStatus createErrorStatus(Throwable e) {
 		return createStatus(IStatus.ERROR,
-				"Unexpected error: " + e.getLocalizedMessage(), e);
+				"Unexpected error: " + e.getLocalizedMessage(), e); //$NON-NLS-1$
 	}
 
 	/**
diff --git a/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/GitHubException.java b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/GitHubException.java
index da31e61c..c6bde874 100644
--- a/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/GitHubException.java
+++ b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/GitHubException.java
@@ -53,7 +53,7 @@ public class GitHubException extends IOException {
 		RequestError error = ((RequestException) getCause()).getError();
 		String errorMessage = error.getMessage();
 		if (errorMessage == null)
-			errorMessage = "";
+			errorMessage = ""; //$NON-NLS-1$
 		StringBuilder message = new StringBuilder(errorMessage);
 		List<FieldError> errors = error.getErrors();
 		if (errors != null && errors.size() > 0) {
diff --git a/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/gist/messages.properties b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/gist/messages.properties
index aa9f10a5..e416f05b 100644
--- a/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/gist/messages.properties
+++ b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/gist/messages.properties
@@ -9,7 +9,7 @@ GistAttribute_LabelModified=Modified:
 GistAttribute_LabelNewComment=New Comment
 GistAttribute_LabelSummary=Summary
 GistAttribute_LabelUrl=Url
-GistConnector_LabelConnector=Github Gists
+GistConnector_LabelConnector=GitHub Gists
 GistTaskDataHandler_FilesMultiple={0} files
 GistTaskDataHandler_FilesSingle=1 file
 GistTaskDataHandler_SizeByte=1 byte
diff --git a/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/issue/IssueAttribute.java b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/issue/IssueAttribute.java
index 58604166..2af15afd 100644
--- a/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/issue/IssueAttribute.java
+++ b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/issue/IssueAttribute.java
@@ -109,21 +109,7 @@ public enum IssueAttribute {
 	 */
 	REPORTER_GRAVATAR(Messages.IssueAttribute_LabelReporterGravatar,
 			"github.issue.reporter.gravatar", TaskAttribute.TYPE_URL, null, //$NON-NLS-1$
-			true, false),
-
-	/**
-	 * URL to diff if issue is a pull request
-	 */
-	PULL_REQUEST_DIFF(Messages.IssueAttribute_LabelPullRequestDiffUrl,
-			"github.issue.pull.diff", //$NON-NLS-2$ //$NON-NLS-1$
-			TaskAttribute.TYPE_URL, null, true, false),
-
-	/**
-	 * Body of pull request if issue is a pull request
-	 */
-	PULL_REQUEST_BODY(Messages.IssueAttribute_LabelPullRequestBody,
-			"github.issue.pull.body", //$NON-NLS-2$
-			TaskAttribute.TYPE_LONG_TEXT, null, true, false);
+			true, false);
 
 	private final GitHubAttributeMetadata metadata;
 
diff --git a/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/issue/IssueConnector.java b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/issue/IssueConnector.java
index 427f29d6..399ebf1a 100644
--- a/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/issue/IssueConnector.java
+++ b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/issue/IssueConnector.java
@@ -13,7 +13,6 @@
 package org.eclipse.mylyn.internal.github.core.issue;
 
 import java.io.IOException;
-import java.net.URL;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.LinkedList;
@@ -28,26 +27,30 @@ import org.eclipse.core.runtime.IProgressMonitor;
 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.core.runtime.Status;
 import org.eclipse.egit.github.core.Comment;
+import org.eclipse.egit.github.core.IRepositoryIdProvider;
 import org.eclipse.egit.github.core.Issue;
 import org.eclipse.egit.github.core.Label;
 import org.eclipse.egit.github.core.Milestone;
+import org.eclipse.egit.github.core.PullRequest;
+import org.eclipse.egit.github.core.Repository;
 import org.eclipse.egit.github.core.RepositoryId;
 import org.eclipse.egit.github.core.client.GitHubClient;
-import org.eclipse.egit.github.core.client.IGitHubConstants;
 import org.eclipse.egit.github.core.service.IssueService;
 import org.eclipse.egit.github.core.service.LabelService;
 import org.eclipse.egit.github.core.service.MilestoneService;
 import org.eclipse.egit.github.core.util.LabelComparator;
 import org.eclipse.egit.github.core.util.MilestoneComparator;
+import org.eclipse.mylyn.commons.net.AuthenticationCredentials;
+import org.eclipse.mylyn.commons.net.AuthenticationType;
 import org.eclipse.mylyn.commons.net.Policy;
 import org.eclipse.mylyn.internal.github.core.GitHub;
 import org.eclipse.mylyn.internal.github.core.QueryUtils;
 import org.eclipse.mylyn.internal.github.core.RepositoryConnector;
+import org.eclipse.mylyn.internal.github.core.pr.PullRequestConnector;
+import org.eclipse.mylyn.internal.tasks.core.IRepositoryConstants;
 import org.eclipse.mylyn.tasks.core.IRepositoryQuery;
-import org.eclipse.mylyn.tasks.core.ITask;
 import org.eclipse.mylyn.tasks.core.TaskRepository;
 import org.eclipse.mylyn.tasks.core.data.AbstractTaskDataHandler;
-import org.eclipse.mylyn.tasks.core.data.TaskAttribute;
 import org.eclipse.mylyn.tasks.core.data.TaskData;
 import org.eclipse.mylyn.tasks.core.data.TaskDataCollector;
 import org.eclipse.mylyn.tasks.core.sync.ISynchronizationSession;
@@ -63,20 +66,48 @@ public class IssueConnector extends RepositoryConnector {
 	public static final String KIND = GitHub.CONNECTOR_KIND;
 
 	/**
+	 * Get repository label for id provider
+	 * 
+	 * @param repo
+	 * @return label
+	 */
+	public static String getRepositoryLabel(IRepositoryIdProvider repo) {
+		return repo.generateId() + Messages.IssueConnector_LabelIssues;
+	}
+
+	/**
+	 * Create issue task repository
+	 * 
+	 * @param repo
+	 * @param username
+	 * @param password
+	 * @return task repository
+	 */
+	public static TaskRepository createTaskRepository(Repository repo,
+			String username, String password) {
+		String url = GitHub.createGitHubUrl(repo.getOwner().getLogin(),
+				repo.getName());
+		TaskRepository repository = new TaskRepository(
+				PullRequestConnector.KIND, url);
+		repository.setProperty(IRepositoryConstants.PROPERTY_LABEL,
+				getRepositoryLabel(repo));
+		if (username != null && password != null)
+			repository.setCredentials(AuthenticationType.REPOSITORY,
+					new AuthenticationCredentials(username, password), true);
+		repository.setProperty(IRepositoryConstants.PROPERTY_CATEGORY,
+				IRepositoryConstants.CATEGORY_BUGS);
+		return repository;
+	}
+
+	/**
 	 * Create client for repository
 	 * 
 	 * @param repository
 	 * @return client
 	 */
 	public static GitHubClient createClient(TaskRepository repository) {
-		GitHubClient client;
-		try {
-			String host = new URL(repository.getRepositoryUrl()).getHost();
-			host = IGitHubConstants.SUBDOMAIN_API + "." + host;
-			client = new GitHubClient(host, -1, IGitHubConstants.PROTOCOL_HTTPS);
-		} catch (IOException e) {
-			throw new IllegalArgumentException(e);
-		}
+		GitHubClient client = GitHubClient.createClient(repository
+				.getRepositoryUrl());
 		GitHub.addCredentials(client, repository);
 		return GitHub.configureClient(client);
 	}
@@ -295,7 +326,7 @@ public class IssueConnector extends RepositoryConnector {
 
 				// collect task data
 				for (Issue issue : issues) {
-					if (issue.getPullRequest() == null)
+					if (isPullRequest(issue))
 						continue;
 					List<Comment> comments = null;
 					if (issue.getComments() > 0)
@@ -315,6 +346,11 @@ public class IssueConnector extends RepositoryConnector {
 		return result;
 	}
 
+	private boolean isPullRequest(Issue issue) {
+		PullRequest request = issue.getPullRequest();
+		return request != null && request.getDiffUrl() != null;
+	}
+
 	@Override
 	public TaskData getTaskData(TaskRepository repository, String taskId,
 			IProgressMonitor monitor) throws CoreException {
@@ -325,6 +361,8 @@ public class IssueConnector extends RepositoryConnector {
 			IssueService service = new IssueService(client);
 			Issue issue = service.getIssue(repo.getOwner(), repo.getName(),
 					taskId);
+			if (isPullRequest(issue))
+				return null;
 			List<Comment> comments = null;
 			if (issue.getComments() > 0)
 				comments = service.getComments(repo.getOwner(), repo.getName(),
@@ -375,22 +413,4 @@ public class IssueConnector extends RepositoryConnector {
 		refreshMilestones(taskRepository);
 		monitor.done();
 	}
-
-	@Override
-	public void updateTaskFromTaskData(TaskRepository taskRepository,
-			ITask task, TaskData taskData) {
-		if (!taskData.isNew()) {
-			String diffUrl = null;
-			TaskAttribute prDiff = taskData.getRoot().getAttribute(
-					IssueAttribute.PULL_REQUEST_DIFF.getMetadata().getId());
-			if (prDiff != null) {
-				diffUrl = taskData.getAttributeMapper().getValue(prDiff);
-				if (diffUrl.length() == 0)
-					diffUrl = null;
-			}
-			task.setAttribute(IssueAttribute.PULL_REQUEST_DIFF.getMetadata()
-					.getId(), diffUrl);
-		}
-		super.updateTaskFromTaskData(taskRepository, task, taskData);
-	}
 }
diff --git a/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/issue/IssueOperation.java b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/issue/IssueOperation.java
index f8263859..647b8fe7 100644
--- a/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/issue/IssueOperation.java
+++ b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/issue/IssueOperation.java
@@ -20,17 +20,17 @@ public enum IssueOperation {
 	/**
 	 * LEAD
 	 */
-	LEAVE("Leave "),
+	LEAVE("Leave "), //$NON-NLS-1$
 
 	/**
 	 * REOPEN
 	 */
-	REOPEN("Reopen"),
+	REOPEN("Reopen"), //$NON-NLS-1$
 
 	/**
 	 * CLOSE
 	 */
-	CLOSE("Close");
+	CLOSE("Close"); //$NON-NLS-1$
 
 	private final String label;
 
diff --git a/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/issue/IssueTaskDataHandler.java b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/issue/IssueTaskDataHandler.java
index f1bf04e4..a9060f8d 100644
--- a/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/issue/IssueTaskDataHandler.java
+++ b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/issue/IssueTaskDataHandler.java
@@ -24,7 +24,6 @@ import org.eclipse.egit.github.core.Comment;
 import org.eclipse.egit.github.core.Issue;
 import org.eclipse.egit.github.core.Label;
 import org.eclipse.egit.github.core.Milestone;
-import org.eclipse.egit.github.core.PullRequest;
 import org.eclipse.egit.github.core.RepositoryId;
 import org.eclipse.egit.github.core.User;
 import org.eclipse.egit.github.core.client.GitHubClient;
@@ -113,14 +112,6 @@ public class IssueTaskDataHandler extends GitHubTaskDataHandler {
 
 		createMilestones(repository, data, issue);
 
-		PullRequest pr = issue.getPullRequest();
-		String prDiffUrl = pr != null ? pr.getDiffUrl() : null;
-		createAttribute(data, IssueAttribute.PULL_REQUEST_DIFF.getMetadata(),
-				prDiffUrl);
-		if (prDiffUrl != null)
-			createAttribute(data,
-					IssueAttribute.PULL_REQUEST_BODY.getMetadata(), ""); //$NON-NLS-1$
-
 		return data;
 	}
 
diff --git a/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/issue/Messages.java b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/issue/Messages.java
index 7ac7f551..dd57e377 100644
--- a/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/issue/Messages.java
+++ b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/issue/Messages.java
@@ -23,6 +23,9 @@ public class Messages extends NLS {
 	public static String IssueConnector_LabelConnector;
 
 	/** */
+	public static String IssueConnector_LabelIssues;
+
+	/** */
 	public static String IssueConector_TaskQuerying;
 
 	/** */
diff --git a/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/issue/messages.properties b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/issue/messages.properties
index 350f6a86..ba0d170f 100644
--- a/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/issue/messages.properties
+++ b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/issue/messages.properties
@@ -1,4 +1,5 @@
 IssueConnector_LabelConnector=GitHub Issues
+IssueConnector_LabelIssues=\ issues
 IssueConector_TaskQuerying=Querying repository...
 IssueConnector_TaskUpdatingLabels=Updating labels
 IssueConnector_TaskUpdatingMilestones=Updating milestones
diff --git a/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/pr/Messages.java b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/pr/Messages.java
new file mode 100644
index 00000000..5ba25b68
--- /dev/null
+++ b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/pr/Messages.java
@@ -0,0 +1,71 @@
+/*******************************************************************************
+ *  Copyright (c) 2011 GitHub Inc.
+ *  All rights reserved. This program and the accompanying materials
+ *  are made available under the terms of the Eclipse Public License v1.0
+ *  which accompanies this distribution, and is available at
+ *  http://www.eclipse.org/legal/epl-v10.html
+ *
+ *  Contributors:
+ *    Kevin Sawicki (GitHub Inc.) - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.mylyn.internal.github.core.pr;
+
+import org.eclipse.osgi.util.NLS;
+
+/**
+ * NLS for Mylyn GitHub Core
+ */
+public class Messages extends NLS {
+
+	private static final String BUNDLE_NAME = "org.eclipse.mylyn.internal.github.core.pr.messages"; //$NON-NLS-1$
+
+	/** */
+	public static String PullRequestAttribute_LabelClosedAt;
+
+	/** */
+	public static String PullRequestAttribute_LabelComment;
+
+	/** */
+	public static String PullRequestAttribute_LabelCreatedAt;
+
+	/** */
+	public static String PullRequestAttribute_LabelDescription;
+
+	/** */
+	public static String PullRequestAttribute_LabelKey;
+
+	/** */
+	public static String PullRequestAttribute_LabelMergedAt;
+
+	/** */
+	public static String PullRequestAttribute_LabelModel;
+
+	/** */
+	public static String PullRequestAttribute_LabelModifiedAt;
+
+	/** */
+	public static String PullRequestAttribute_LabelReporter;
+
+	/** */
+	public static String PullRequestAttribute_LabelStatus;
+
+	/** */
+	public static String PullRequestAttribute_LabelSummary;
+
+	/** */
+	public static String PullRequestConnector_Label;
+
+	/** */
+	public static String PullRequestConnector_LabelPullRequests;
+
+	/** */
+	public static String PullRequestConnector_TaskFetching;
+
+	static {
+		// initialize resource bundle
+		NLS.initializeMessages(BUNDLE_NAME, Messages.class);
+	}
+
+	private Messages() {
+	}
+}
diff --git a/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/pr/PullRequestAttribute.java b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/pr/PullRequestAttribute.java
new file mode 100644
index 00000000..1c12251d
--- /dev/null
+++ b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/pr/PullRequestAttribute.java
@@ -0,0 +1,121 @@
+/******************************************************************************
+ *  Copyright (c) 2011 GitHub Inc.
+ *  All rights reserved. This program and the accompanying materials
+ *  are made available under the terms of the Eclipse Public License v1.0
+ *  which accompanies this distribution, and is available at
+ *  http://www.eclipse.org/legal/epl-v10.html
+ *
+ *  Contributors:
+ *    Kevin Sawicki (GitHub Inc.) - initial API and implementation
+ *****************************************************************************/
+package org.eclipse.mylyn.internal.github.core.pr;
+
+import org.eclipse.mylyn.internal.github.core.GitHubAttributeMetadata;
+import org.eclipse.mylyn.tasks.core.data.TaskAttribute;
+
+/**
+ * GitHub pull request attributes
+ */
+public enum PullRequestAttribute {
+
+	/**
+	 * Pull request key
+	 */
+	KEY(Messages.PullRequestAttribute_LabelKey, TaskAttribute.TASK_KEY,
+			TaskAttribute.TYPE_SHORT_TEXT, true, true),
+
+	/**
+	 * Pull request title
+	 */
+	TITLE(Messages.PullRequestAttribute_LabelSummary, TaskAttribute.SUMMARY,
+			TaskAttribute.TYPE_SHORT_RICH_TEXT, false, true),
+
+	/**
+	 * Pull request description
+	 */
+	BODY(Messages.PullRequestAttribute_LabelDescription,
+			TaskAttribute.DESCRIPTION, TaskAttribute.TYPE_LONG_RICH_TEXT,
+			false, true),
+
+	/**
+	 * Pull request creation date
+	 */
+	CREATION_DATE(Messages.PullRequestAttribute_LabelCreatedAt,
+			TaskAttribute.DATE_CREATION, TaskAttribute.TYPE_DATETIME, true,
+			false),
+
+	/**
+	 * Pull request modification date
+	 */
+	MODIFICATION_DATE(Messages.PullRequestAttribute_LabelModifiedAt,
+			TaskAttribute.DATE_MODIFICATION, TaskAttribute.TYPE_DATETIME, true,
+			false),
+
+	/**
+	 * Pull request closed date
+	 */
+	CLOSED_DATE(Messages.PullRequestAttribute_LabelClosedAt,
+			TaskAttribute.DATE_COMPLETION, TaskAttribute.TYPE_DATETIME, true,
+			false),
+
+	/**
+	 * Pull request merged date
+	 */
+	MERGED_DATE(Messages.PullRequestAttribute_LabelMergedAt,
+			"github.pr.merged.at", TaskAttribute.TYPE_DATETIME, true, false), //$NON-NLS-1$
+
+	/**
+	 * Pull request status
+	 */
+	STATUS(Messages.PullRequestAttribute_LabelStatus, TaskAttribute.STATUS,
+			TaskAttribute.TYPE_SHORT_TEXT, false, true),
+
+	/**
+	 * Pull request reporter
+	 */
+	REPORTER(Messages.PullRequestAttribute_LabelReporter,
+			TaskAttribute.USER_REPORTER, TaskAttribute.TYPE_PERSON, true, false),
+
+	/**
+	 * Comment being added to pull request
+	 */
+	COMMENT_NEW(Messages.PullRequestAttribute_LabelComment,
+			TaskAttribute.COMMENT_NEW, TaskAttribute.TYPE_LONG_RICH_TEXT,
+			false, false),
+
+	/**
+	 * Pull request reporter gravatar
+	 */
+	REPORTER_GRAVATAR(Messages.PullRequestAttribute_LabelReporter,
+			"github.pr.reporter.gravatar", TaskAttribute.TYPE_URL, null, true, //$NON-NLS-1$
+			false),
+
+	/**
+	 * Full pull request model stored as JSON
+	 */
+	MODEL(Messages.PullRequestAttribute_LabelModel, "github.pr.model", //$NON-NLS-1$
+			TaskAttribute.TYPE_LONG_TEXT, null, true, false);
+
+	private final GitHubAttributeMetadata metadata;
+
+	private PullRequestAttribute(String label, String id, String type,
+			boolean readOnly, boolean initTask) {
+		metadata = new GitHubAttributeMetadata(id, label, type, readOnly,
+				initTask);
+	}
+
+	private PullRequestAttribute(String label, String id, String type,
+			String kind, boolean readOnly, boolean initTask) {
+		metadata = new GitHubAttributeMetadata(id, label, kind, type, readOnly,
+				initTask);
+	}
+
+	/**
+	 * Get attribute metadata
+	 * 
+	 * @return metadata
+	 */
+	public GitHubAttributeMetadata getMetadata() {
+		return metadata;
+	}
+}
diff --git a/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/pr/PullRequestComposite.java b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/pr/PullRequestComposite.java
new file mode 100644
index 00000000..c7b47ea5
--- /dev/null
+++ b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/pr/PullRequestComposite.java
@@ -0,0 +1,58 @@
+/******************************************************************************
+ *  Copyright (c) 2011 GitHub Inc.
+ *  All rights reserved. This program and the accompanying materials
+ *  are made available under the terms of the Eclipse Public License v1.0
+ *  which accompanies this distribution, and is available at
+ *  http://www.eclipse.org/legal/epl-v10.html
+ *
+ *  Contributors:
+ *    Kevin Sawicki (GitHub Inc.) - initial API and implementation
+ *****************************************************************************/
+package org.eclipse.mylyn.internal.github.core.pr;
+
+import java.util.List;
+
+import org.eclipse.egit.github.core.PullRequest;
+import org.eclipse.egit.github.core.PullRequestCommit;
+
+/**
+ * Pull request composite that includes commits
+ */
+public class PullRequestComposite {
+
+	private PullRequest request;
+
+	private List<PullRequestCommit> commits;
+
+	/**
+	 * @return request
+	 */
+	public PullRequest getRequest() {
+		return request;
+	}
+
+	/**
+	 * @param request
+	 * @return this pull request composite
+	 */
+	public PullRequestComposite setRequest(PullRequest request) {
+		this.request = request;
+		return this;
+	}
+
+	/**
+	 * @return commits
+	 */
+	public List<PullRequestCommit> getCommits() {
+		return commits;
+	}
+
+	/**
+	 * @param commits
+	 * @return this pull request composite
+	 */
+	public PullRequestComposite setCommits(List<PullRequestCommit> commits) {
+		this.commits = commits;
+		return this;
+	}
+}
diff --git a/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/pr/PullRequestConnector.java b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/pr/PullRequestConnector.java
new file mode 100644
index 00000000..14355cb2
--- /dev/null
+++ b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/pr/PullRequestConnector.java
@@ -0,0 +1,265 @@
+/******************************************************************************
+ *  Copyright (c) 2011 GitHub Inc.
+ *  All rights reserved. This program and the accompanying materials
+ *  are made available under the terms of the Eclipse Public License v1.0
+ *  which accompanies this distribution, and is available at
+ *  http://www.eclipse.org/legal/epl-v10.html
+ *
+ *  Contributors:
+ *    Kevin Sawicki (GitHub Inc.) - initial API and implementation
+ *****************************************************************************/
+package org.eclipse.mylyn.internal.github.core.pr;
+
+import java.io.IOException;
+import java.util.List;
+
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.core.runtime.Status;
+import org.eclipse.egit.github.core.Comment;
+import org.eclipse.egit.github.core.IRepositoryIdProvider;
+import org.eclipse.egit.github.core.PullRequest;
+import org.eclipse.egit.github.core.Repository;
+import org.eclipse.egit.github.core.RepositoryId;
+import org.eclipse.egit.github.core.client.GitHubClient;
+import org.eclipse.egit.github.core.client.GsonUtils;
+import org.eclipse.egit.github.core.client.IGitHubConstants;
+import org.eclipse.egit.github.core.service.IssueService;
+import org.eclipse.egit.github.core.service.PullRequestService;
+import org.eclipse.mylyn.commons.net.AuthenticationCredentials;
+import org.eclipse.mylyn.commons.net.AuthenticationType;
+import org.eclipse.mylyn.internal.github.core.GitHub;
+import org.eclipse.mylyn.internal.github.core.QueryUtils;
+import org.eclipse.mylyn.internal.github.core.RepositoryConnector;
+import org.eclipse.mylyn.internal.github.core.issue.IssueConnector;
+import org.eclipse.mylyn.internal.tasks.core.IRepositoryConstants;
+import org.eclipse.mylyn.tasks.core.IRepositoryQuery;
+import org.eclipse.mylyn.tasks.core.TaskRepository;
+import org.eclipse.mylyn.tasks.core.data.AbstractTaskDataHandler;
+import org.eclipse.mylyn.tasks.core.data.TaskData;
+import org.eclipse.mylyn.tasks.core.data.TaskDataCollector;
+import org.eclipse.mylyn.tasks.core.sync.ISynchronizationSession;
+
+/**
+ * GitHub pull request connector.
+ */
+public class PullRequestConnector extends RepositoryConnector {
+
+	/**
+	 * SEGMENT_PULL
+	 */
+	public static final String SEGMENT_PULL = "/pull"; //$NON-NLS-1$
+
+	/**
+	 * GitHub kind.
+	 */
+	public static final String KIND = "githubPullRequests"; //$NON-NLS-1$
+
+	/**
+	 * Get repository label for id provider.
+	 * 
+	 * @param repo
+	 * @return label
+	 */
+	public static String getRepositoryLabel(IRepositoryIdProvider repo) {
+		return repo.generateId() + Messages.PullRequestConnector_LabelPullRequests;
+	}
+
+	/**
+	 * Create pull request task repository
+	 * 
+	 * @param repo
+	 * @param username
+	 * @param password
+	 * @return task repository
+	 */
+	public static TaskRepository createTaskRepository(Repository repo,
+			String username, String password) {
+		String url = PullRequestConnector.appendPulls(GitHub.createGitHubUrl(
+				repo.getOwner().getLogin(), repo.getName()));
+		TaskRepository repository = new TaskRepository(
+				PullRequestConnector.KIND, url);
+		repository.setProperty(IRepositoryConstants.PROPERTY_LABEL,
+				getRepositoryLabel(repo));
+		if (username != null && password != null)
+			repository.setCredentials(AuthenticationType.REPOSITORY,
+					new AuthenticationCredentials(username, password), true);
+		repository.setProperty(IRepositoryConstants.PROPERTY_CATEGORY,
+				IRepositoryConstants.CATEGORY_REVIEW);
+		return repository;
+	}
+
+	/**
+	 * Appends a trailing '/pull's segment to the given url
+	 * 
+	 * @param repoUrl
+	 * @return appended string
+	 */
+	public static String appendPulls(final String repoUrl) {
+		return repoUrl + IGitHubConstants.SEGMENT_PULLS;
+	}
+
+	/**
+	 * Strip trailing '/pulls' segment from string if it ends with it.
+	 * 
+	 * @param repoUrl
+	 * @return stripped string
+	 */
+	public static String stripPulls(String repoUrl) {
+		if (repoUrl.endsWith(IGitHubConstants.SEGMENT_PULLS))
+			repoUrl = repoUrl.substring(0, repoUrl.length()
+					- IGitHubConstants.SEGMENT_PULLS.length());
+		return repoUrl;
+	}
+
+	/**
+	 * Get pull request from task data
+	 * 
+	 * @param data
+	 * @return pull request
+	 */
+	public static PullRequestComposite getPullRequest(TaskData data) {
+		if (data == null)
+			return null;
+		String value = PullRequestAttribute.MODEL.getMetadata().getValue(data);
+		if (value.length() == 0)
+			return null;
+		return GsonUtils.fromJson(value, PullRequestComposite.class);
+	}
+
+	/**
+	 * Get repository id from pull request task repository url
+	 * 
+	 * @param prRepoUrl
+	 * @return repository id
+	 */
+	public static RepositoryId getRepository(String prRepoUrl) {
+		return GitHub.getRepository(stripPulls(prRepoUrl));
+	}
+
+	/**
+	 * GitHub specific {@link AbstractTaskDataHandler}.
+	 */
+	private final PullRequestTaskDataHandler taskDataHandler;
+
+	/**
+	 * Create GitHub issue repository connector
+	 */
+	public PullRequestConnector() {
+		taskDataHandler = new PullRequestTaskDataHandler(this);
+	}
+
+	/**
+	 * {@inheritDoc}
+	 * 
+	 * @see #KIND
+	 */
+	@Override
+	public String getConnectorKind() {
+		return KIND;
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public String getLabel() {
+		return Messages.PullRequestConnector_Label;
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public AbstractTaskDataHandler getTaskDataHandler() {
+		return taskDataHandler;
+	}
+
+	@Override
+	public IStatus performQuery(TaskRepository repository,
+			IRepositoryQuery query, TaskDataCollector collector,
+			ISynchronizationSession session, IProgressMonitor monitor) {
+		IStatus result = Status.OK_STATUS;
+		List<String> statuses = QueryUtils.getAttributes(
+				IssueService.FILTER_STATE, query);
+
+		monitor.beginTask(Messages.PullRequestConnector_TaskFetching,
+				statuses.size());
+		try {
+			RepositoryId repo = getRepository(repository.getRepositoryUrl());
+
+			GitHubClient client = IssueConnector.createClient(repository);
+			PullRequestService service = new PullRequestService(client);
+			IssueService commentService = new IssueService(client);
+
+			for (String status : statuses) {
+				List<PullRequest> pulls = service.getPullRequests(repo, status);
+
+				// collect task data
+				for (PullRequest pr : pulls) {
+					pr = service.getPullRequest(repo, pr.getNumber());
+					PullRequestComposite prComp = new PullRequestComposite();
+					prComp.setRequest(pr);
+					List<Comment> comments = null;
+					if (pr.getComments() > 0)
+						comments = commentService.getComments(repo.getOwner(),
+								repo.getName(),
+								Integer.toString(pr.getNumber()));
+					if (pr.getCommits() > 0)
+						prComp.setCommits(service.getCommits(repo,
+								pr.getNumber()));
+					TaskData taskData = taskDataHandler.createTaskData(
+							repository, monitor, repo, prComp, comments);
+					collector.accept(taskData);
+				}
+				monitor.worked(1);
+			}
+		} catch (IOException e) {
+			result = GitHub.createWrappedStatus(e);
+		}
+
+		monitor.done();
+		return result;
+	}
+
+	@Override
+	public TaskData getTaskData(TaskRepository repository, String taskId,
+			IProgressMonitor monitor) throws CoreException {
+		RepositoryId repo = getRepository(repository.getRepositoryUrl());
+
+		try {
+			GitHubClient client = IssueConnector.createClient(repository);
+			PullRequestService service = new PullRequestService(client);
+			PullRequest pr = service.getPullRequest(repo,
+					Integer.parseInt(taskId));
+			PullRequestComposite prComp = new PullRequestComposite();
+			prComp.setRequest(pr);
+			IssueService commentService = new IssueService(client);
+			List<Comment> comments = null;
+			if (pr.getComments() > 0)
+				comments = commentService.getComments(repo.getOwner(),
+						repo.getName(), taskId);
+			if (pr.getCommits() > 0)
+				prComp.setCommits(service.getCommits(repo, pr.getNumber()));
+			return taskDataHandler.createTaskData(repository, monitor, repo,
+					prComp, comments);
+		} catch (IOException e) {
+			throw new CoreException(GitHub.createWrappedStatus(e));
+		}
+	}
+
+	@Override
+	public String getRepositoryUrlFromTaskUrl(String taskFullUrl) {
+		int lastPull = taskFullUrl.lastIndexOf(SEGMENT_PULL);
+		if (lastPull != -1)
+			return taskFullUrl.substring(0, lastPull)
+					+ IGitHubConstants.SEGMENT_PULLS;
+		return null;
+	}
+
+	@Override
+	public String getTaskUrl(String repositoryUrl, String taskId) {
+		return stripPulls(repositoryUrl) + SEGMENT_PULL + "/" + taskId; //$NON-NLS-1$
+	}
+}
diff --git a/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/pr/PullRequestOperation.java b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/pr/PullRequestOperation.java
new file mode 100644
index 00000000..6e2dabbd
--- /dev/null
+++ b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/pr/PullRequestOperation.java
@@ -0,0 +1,72 @@
+/******************************************************************************
+ *  Copyright (c) 2011 GitHub Inc.
+ *  All rights reserved. This program and the accompanying materials
+ *  are made available under the terms of the Eclipse Public License v1.0
+ *  which accompanies this distribution, and is available at
+ *  http://www.eclipse.org/legal/epl-v10.html
+ *
+ *  Contributors:
+ *    Kevin Sawicki (GitHub Inc.) - initial API and implementation
+ *****************************************************************************/
+package org.eclipse.mylyn.internal.github.core.pr;
+
+/**
+ * Enumeration of task operations
+ */
+public enum PullRequestOperation {
+
+	/**
+	 * LEAD
+	 */
+	LEAVE("Leave "), //$NON-NLS-1$
+
+	/**
+	 * REOPEN
+	 */
+	REOPEN("Reopen"), //$NON-NLS-1$
+
+	/**
+	 * CLOSE
+	 */
+	CLOSE("Close"); //$NON-NLS-1$
+
+	private final String label;
+
+	private PullRequestOperation(String label) {
+		this.label = label;
+	}
+
+	/**
+	 * Get label
+	 * 
+	 * @return label
+	 */
+	public String getLabel() {
+		return label;
+	}
+
+	/**
+	 * Get id
+	 * 
+	 * @return id
+	 */
+	public String getId() {
+		return name();
+	}
+
+	/**
+	 * get the operation by its id
+	 * 
+	 * @param opId
+	 *            the id, or null
+	 * @return the operation, or null if the id was null or did not match any
+	 *         operation
+	 */
+	public static PullRequestOperation fromId(final String opId) {
+		for (PullRequestOperation op : values())
+			if (op.getId().equals(opId))
+				return op;
+		return null;
+	}
+
+}
diff --git a/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/pr/PullRequestTaskDataHandler.java b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/pr/PullRequestTaskDataHandler.java
new file mode 100644
index 00000000..d7f24620
--- /dev/null
+++ b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/pr/PullRequestTaskDataHandler.java
@@ -0,0 +1,230 @@
+/******************************************************************************
+ *  Copyright (c) 2011 GitHub Inc.
+ *  All rights reserved. This program and the accompanying materials
+ *  are made available under the terms of the Eclipse Public License v1.0
+ *  which accompanies this distribution, and is available at
+ *  http://www.eclipse.org/legal/epl-v10.html
+ *
+ *  Contributors:
+ *    Kevin Sawicki (GitHub Inc.) - initial API and implementation
+ *****************************************************************************/
+package org.eclipse.mylyn.internal.github.core.pr;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.Set;
+
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.egit.github.core.Comment;
+import org.eclipse.egit.github.core.IRepositoryIdProvider;
+import org.eclipse.egit.github.core.PullRequest;
+import org.eclipse.egit.github.core.RepositoryId;
+import org.eclipse.egit.github.core.User;
+import org.eclipse.egit.github.core.client.GitHubClient;
+import org.eclipse.egit.github.core.client.GsonUtils;
+import org.eclipse.egit.github.core.service.IssueService;
+import org.eclipse.egit.github.core.service.PullRequestService;
+import org.eclipse.mylyn.internal.github.core.GitHub;
+import org.eclipse.mylyn.internal.github.core.GitHubTaskDataHandler;
+import org.eclipse.mylyn.internal.github.core.issue.IssueConnector;
+import org.eclipse.mylyn.tasks.core.ITaskMapping;
+import org.eclipse.mylyn.tasks.core.RepositoryResponse;
+import org.eclipse.mylyn.tasks.core.RepositoryResponse.ResponseKind;
+import org.eclipse.mylyn.tasks.core.TaskRepository;
+import org.eclipse.mylyn.tasks.core.data.TaskAttribute;
+import org.eclipse.mylyn.tasks.core.data.TaskData;
+
+/**
+ * GitHub issue task data handler
+ */
+public class PullRequestTaskDataHandler extends GitHubTaskDataHandler {
+
+	private static final String DATA_VERSION = "1.1"; //$NON-NLS-1$
+
+	/**
+	 * Create GitHub issue task data handler for connector
+	 * 
+	 * @param connector
+	 */
+	public PullRequestTaskDataHandler(PullRequestConnector connector) {
+	}
+
+	/**
+	 * Create task data for pull request
+	 * 
+	 * @param repository
+	 * @param monitor
+	 * @param repo
+	 * @param prComp
+	 * @return task data
+	 */
+	public TaskData createTaskData(TaskRepository repository,
+			IProgressMonitor monitor, IRepositoryIdProvider repo,
+			PullRequestComposite prComp) {
+		PullRequest pr = prComp.getRequest();
+		String key = Integer.toString(pr.getNumber());
+		TaskData data = new TaskData(getAttributeMapper(repository),
+				PullRequestConnector.KIND, repository.getRepositoryUrl(), key);
+		data.setVersion(DATA_VERSION);
+
+		createOperations(data, pr);
+
+		createAttribute(data, PullRequestAttribute.KEY.getMetadata(), key);
+		createAttribute(data, PullRequestAttribute.TITLE.getMetadata(),
+				pr.getTitle());
+		createAttribute(data, PullRequestAttribute.BODY.getMetadata(),
+				pr.getBody());
+		createAttribute(data, PullRequestAttribute.STATUS.getMetadata(),
+				pr.getState());
+		createAttribute(data, PullRequestAttribute.CREATION_DATE.getMetadata(),
+				pr.getCreatedAt());
+		createAttribute(data,
+				PullRequestAttribute.MODIFICATION_DATE.getMetadata(),
+				pr.getUpdatedAt());
+		createAttribute(data, PullRequestAttribute.CLOSED_DATE.getMetadata(),
+				pr.getClosedAt());
+
+		User reporter = pr.getUser();
+		createAttribute(data, PullRequestAttribute.REPORTER.getMetadata(),
+				reporter, repository);
+		String reporterGravatar = reporter != null ? reporter.getAvatarUrl()
+				: null;
+		createAttribute(data,
+				PullRequestAttribute.REPORTER_GRAVATAR.getMetadata(),
+				reporterGravatar);
+
+		createAttribute(data, PullRequestAttribute.COMMENT_NEW.getMetadata());
+
+		createAttribute(data, PullRequestAttribute.MODEL.getMetadata(),
+				GsonUtils.toJson(prComp));
+
+		return data;
+	}
+
+	private void createOperations(TaskData data, PullRequest pr) {
+		createOperationAttribute(data);
+
+		if (data.isNew())
+			return;
+
+		String state = pr.getState();
+		if (state != null) {
+			addOperation(data, pr, PullRequestOperation.LEAVE, true);
+			if (state.equals(IssueService.STATE_OPEN))
+				addOperation(data, pr, PullRequestOperation.CLOSE, false);
+			else if (state.equals(IssueService.STATE_CLOSED))
+				addOperation(data, pr, PullRequestOperation.REOPEN, false);
+		}
+	}
+
+	private void addOperation(TaskData data, PullRequest pr,
+			PullRequestOperation operation, boolean isDefault) {
+		String id = operation.getId();
+		String label = createOperationLabel(pr, operation);
+		addOperation(data, id, label, isDefault);
+	}
+
+	private String createOperationLabel(PullRequest pr,
+			PullRequestOperation operation) {
+		return operation == PullRequestOperation.LEAVE ? operation.getLabel()
+				+ pr.getState() : operation.getLabel();
+	}
+
+	/**
+	 * Create task data for pull request
+	 * 
+	 * @param repository
+	 * @param monitor
+	 * @param repo
+	 * @param pr
+	 * @param comments
+	 * @return task data
+	 */
+	public TaskData createTaskData(TaskRepository repository,
+			IProgressMonitor monitor, IRepositoryIdProvider repo,
+			PullRequestComposite pr, List<Comment> comments) {
+		TaskData taskData = createTaskData(repository, monitor, repo, pr);
+		taskData.setPartial(false);
+
+		addComments(taskData.getRoot(), comments, repository);
+
+		return taskData;
+	}
+
+	private PullRequest createPullRequest(TaskData taskData) {
+		PullRequest pr = new PullRequest();
+		if (!taskData.isNew())
+			pr.setNumber(Integer.parseInt(taskData.getTaskId()));
+
+		pr.setBody(getAttributeValue(taskData,
+				PullRequestAttribute.BODY.getMetadata()));
+		pr.setTitle(getAttributeValue(taskData,
+				PullRequestAttribute.TITLE.getMetadata()));
+
+		return pr;
+	}
+
+	@Override
+	public boolean initializeTaskData(TaskRepository repository, TaskData data,
+			ITaskMapping initializationData, IProgressMonitor monitor)
+			throws CoreException {
+		data.setVersion(DATA_VERSION);
+		for (PullRequestAttribute attr : PullRequestAttribute.values())
+			if (attr.getMetadata().isInitTask())
+				createAttribute(data, attr.getMetadata(), (String) null);
+		return true;
+	}
+
+	@Override
+	public RepositoryResponse postTaskData(TaskRepository repository,
+			TaskData taskData, Set<TaskAttribute> oldAttributes,
+			IProgressMonitor monitor) throws CoreException {
+		String taskId = taskData.getTaskId();
+		PullRequest pr = createPullRequest(taskData);
+		RepositoryId repo = PullRequestConnector.getRepository(repository
+				.getRepositoryUrl());
+		try {
+			GitHubClient client = IssueConnector.createClient(repository);
+			PullRequestService prService = new PullRequestService(client);
+			IssueService issueService = new IssueService(client);
+			if (taskData.isNew()) {
+				pr.setState(IssueService.STATE_OPEN);
+				pr = prService.createPullRequest(repo, pr);
+				taskId = Integer.toString(pr.getNumber());
+			} else {
+				// Handle new comment
+				String comment = getAttributeValue(taskData,
+						PullRequestAttribute.COMMENT_NEW.getMetadata());
+				if (comment != null && comment.length() > 0)
+					issueService.createComment(repo.getOwner(), repo.getName(),
+							taskId, comment);
+
+				// Handle state change
+				TaskAttribute operationAttribute = taskData.getRoot()
+						.getAttribute(TaskAttribute.OPERATION);
+				if (operationAttribute != null) {
+					PullRequestOperation operation = PullRequestOperation
+							.fromId(operationAttribute.getValue());
+					if (operation != PullRequestOperation.LEAVE)
+						switch (operation) {
+						case REOPEN:
+							pr.setState(IssueService.STATE_OPEN);
+							break;
+						case CLOSE:
+							pr.setState(IssueService.STATE_CLOSED);
+							break;
+						default:
+							break;
+						}
+				}
+				prService.editPullRequest(repo, pr);
+			}
+			return new RepositoryResponse(
+					taskData.isNew() ? ResponseKind.TASK_CREATED
+							: ResponseKind.TASK_UPDATED, taskId);
+		} catch (IOException e) {
+			throw new CoreException(GitHub.createWrappedStatus(e));
+		}
+	}
+}
diff --git a/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/pr/PullRequestUtils.java b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/pr/PullRequestUtils.java
new file mode 100644
index 00000000..5eb734f4
--- /dev/null
+++ b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/pr/PullRequestUtils.java
@@ -0,0 +1,145 @@
+/******************************************************************************
+ *  Copyright (c) 2011 GitHub Inc.
+ *  All rights reserved. This program and the accompanying materials
+ *  are made available under the terms of the Eclipse Public License v1.0
+ *  which accompanies this distribution, and is available at
+ *  http://www.eclipse.org/legal/epl-v10.html
+ *
+ *  Contributors:
+ *    Kevin Sawicki (GitHub Inc.) - initial API and implementation
+ *****************************************************************************/
+package org.eclipse.mylyn.internal.github.core.pr;
+
+import java.io.File;
+import java.io.IOException;
+import java.net.URISyntaxException;
+
+import org.eclipse.egit.core.Activator;
+import org.eclipse.egit.core.RepositoryCache;
+import org.eclipse.egit.github.core.PullRequest;
+import org.eclipse.egit.github.core.PullRequestMarker;
+import org.eclipse.jgit.lib.ConfigConstants;
+import org.eclipse.jgit.lib.Constants;
+import org.eclipse.jgit.lib.Repository;
+import org.eclipse.jgit.lib.StoredConfig;
+import org.eclipse.jgit.transport.RefSpec;
+import org.eclipse.jgit.transport.RemoteConfig;
+import org.eclipse.jgit.transport.URIish;
+import org.eclipse.mylyn.internal.github.core.GitHub;
+
+/**
+ * Pull request utilities
+ */
+public abstract class PullRequestUtils {
+
+	/**
+	 * HEAD_SOURCE
+	 */
+	public static final String HEAD_SOURCE = '+' + Constants.R_HEADS + '*';
+
+	/**
+	 * Get destination ref spec
+	 * 
+	 * @param remote
+	 * @return ref spec
+	 */
+	public static String getDesintationRef(RemoteConfig remote) {
+		return Constants.R_REMOTES + remote.getName() + "/*"; //$NON-NLS-1$
+	}
+
+	/**
+	 * Get branch name for pull request
+	 * 
+	 * @param request
+	 * @return non-null/non-empty branch name
+	 */
+	public static String getBranchName(PullRequest request) {
+		return "pr-" + request.getNumber(); //$NON-NLS-1$
+	}
+
+	/**
+	 * Get Git repository for pull request
+	 * 
+	 * @param request
+	 * @return repository or null if none found
+	 */
+	public static Repository getRepository(PullRequest request) {
+		org.eclipse.egit.github.core.Repository remoteRepo = request.getBase()
+				.getRepository();
+		String id = remoteRepo.getOwner().getLogin() + '/'
+				+ remoteRepo.getName() + Constants.DOT_GIT;
+		RepositoryCache cache = Activator.getDefault().getRepositoryCache();
+		for (String path : Activator.getDefault().getRepositoryUtil()
+				.getConfiguredRepositories())
+			try {
+				Repository repo = cache.lookupRepository(new File(path));
+				RemoteConfig rc = new RemoteConfig(repo.getConfig(),
+						Constants.DEFAULT_REMOTE_NAME);
+				for (URIish uri : rc.getURIs())
+					if (uri.toString().endsWith(id))
+						return repo;
+			} catch (IOException e) {
+				GitHub.logError(e);
+				continue;
+			} catch (URISyntaxException e) {
+				GitHub.logError(e);
+				continue;
+			}
+		return null;
+	}
+
+	/**
+	 * Configure pull request topic branch to use head remote
+	 * 
+	 * @param repo
+	 * @param request
+	 * @throws IOException
+	 */
+	public static void configureTopicBranch(Repository repo, PullRequest request)
+			throws IOException {
+		String branch = getBranchName(request);
+		PullRequestMarker head = request.getHead();
+		String remote = head.getRepository().getOwner().getLogin();
+		StoredConfig config = repo.getConfig();
+		config.setString(ConfigConstants.CONFIG_BRANCH_SECTION, branch,
+				ConfigConstants.CONFIG_KEY_MERGE, Constants.R_REMOTES + remote
+						+ "/" + head.getRef()); //$NON-NLS-1$
+		config.setString(ConfigConstants.CONFIG_BRANCH_SECTION, branch,
+				ConfigConstants.CONFIG_KEY_REMOTE, remote);
+		config.save();
+	}
+
+	/**
+	 * Add remote for the head of a pull request if it doesn't exist
+	 * 
+	 * @param repo
+	 * @param request
+	 * @return remote config
+	 * @throws IOException
+	 * @throws URISyntaxException
+	 */
+	public static RemoteConfig addRemote(Repository repo, PullRequest request)
+			throws IOException, URISyntaxException {
+		StoredConfig config = repo.getConfig();
+		org.eclipse.egit.github.core.Repository head = request.getHead()
+				.getRepository();
+		String name = head.getOwner().getLogin();
+		for (RemoteConfig candidate : RemoteConfig.getAllRemoteConfigs(config))
+			if (name.equals(candidate.getName()))
+				return candidate;
+
+		RemoteConfig remote = new RemoteConfig(config, name);
+		if (head.isPrivate())
+			remote.addURI(new URIish(org.eclipse.egit.github.core.Repository
+					.createRemoteSshUrl(head)));
+		else
+			remote.addURI(new URIish(org.eclipse.egit.github.core.Repository
+					.createRemoteReadOnlyUrl(head)));
+
+		remote.addFetchRefSpec(new RefSpec(HEAD_SOURCE
+				+ ":" + getDesintationRef(remote))); //$NON-NLS-1$ 
+		remote.update(config);
+		config.save();
+		return remote;
+	}
+}
diff --git a/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/pr/messages.properties b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/pr/messages.properties
new file mode 100644
index 00000000..474d81f6
--- /dev/null
+++ b/org.eclipse.mylyn.github.core/src/org/eclipse/mylyn/internal/github/core/pr/messages.properties
@@ -0,0 +1,14 @@
+PullRequestAttribute_LabelClosedAt=Closed:
+PullRequestAttribute_LabelComment=Comment:
+PullRequestAttribute_LabelCreatedAt=Created:
+PullRequestAttribute_LabelDescription=Description
+PullRequestAttribute_LabelKey=Key
+PullRequestAttribute_LabelMergedAt=Merged:
+PullRequestAttribute_LabelModel=Model
+PullRequestAttribute_LabelModifiedAt=Modified:
+PullRequestAttribute_LabelReporter=Reporter
+PullRequestAttribute_LabelStatus=Status
+PullRequestAttribute_LabelSummary=Summary
+PullRequestConnector_Label=GitHub Pull Requests
+PullRequestConnector_LabelPullRequests=\ pull requests
+PullRequestConnector_TaskFetching=Fetching pull requests