implement git post receive hooks

scm-plugins/scm-git-plugin/src/main/java/sonia/scm/web/GitPostReceiveHook.java

@@ -0,0 +1,163 @@
+/**
+ * Copyright (c) 2010, Sebastian Sdorra
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of SCM-Manager; nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://bitbucket.org/sdorra/scm-manager
+ *
+ */
+
+
+
+package sonia.scm.web;
+
+//~--- non-JDK imports --------------------------------------------------------
+
+import org.eclipse.jgit.revwalk.RevCommit;
+import org.eclipse.jgit.revwalk.RevWalk;
+import org.eclipse.jgit.transport.PostReceiveHook;
+import org.eclipse.jgit.transport.ReceiveCommand;
+import org.eclipse.jgit.transport.ReceivePack;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import sonia.scm.repository.Changeset;
+import sonia.scm.repository.GitChangesetConverter;
+import sonia.scm.repository.GitRepositoryHandler;
+import sonia.scm.repository.GitUtil;
+import sonia.scm.repository.RepositoryManager;
+import sonia.scm.repository.RepositoryNotFoundException;
+import sonia.scm.util.IOUtil;
+
+//~--- JDK imports ------------------------------------------------------------
+
+import java.io.IOException;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+/**
+ *
+ * @author Sebastian Sdorra
+ */
+public class GitPostReceiveHook implements PostReceiveHook
+{
+
+  /** the logger for GitPostReceiveHook */
+  private static final Logger logger =
+    LoggerFactory.getLogger(GitPostReceiveHook.class);
+
+  //~--- constructors ---------------------------------------------------------
+
+  /**
+   * Constructs ...
+   *
+   *
+   * @param repositoryManager
+   */
+  public GitPostReceiveHook(RepositoryManager repositoryManager)
+  {
+    this.repositoryManager = repositoryManager;
+  }
+
+  //~--- methods --------------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @param rpack
+   * @param receiveCommands
+   */
+  @Override
+  public void onPostReceive(ReceivePack rpack,
+                            Collection<ReceiveCommand> receiveCommands)
+  {
+    GitChangesetConverter converter = null;
+    RevWalk walk = rpack.getRevWalk();
+
+    try
+    {
+      List<Changeset> changesets = new ArrayList<Changeset>();
+
+      converter = new GitChangesetConverter(rpack.getRepository(),
+              GitUtil.ID_LENGTH);
+
+      for (ReceiveCommand rc : receiveCommands)
+      {
+        if (isCreateCommand(rc))
+        {
+          RevCommit commit = walk.parseCommit(rc.getNewId());
+
+          if (commit != null)
+          {
+            changesets.add(converter.createChangeset(commit));
+          }
+        }
+      }
+
+      String repositoryName = rpack.getRepository().getDirectory().getName();
+
+      repositoryManager.firePostReceiveEvent(GitRepositoryHandler.TYPE_NAME,
+              repositoryName, changesets);
+    }
+    catch (RepositoryNotFoundException ex)
+    {
+      logger.error("repository could not be found", ex);
+    }
+    catch (IOException ex)
+    {
+      logger.error("could not parse PostReceiveHook", ex);
+    }
+    finally
+    {
+      IOUtil.close(converter);
+      GitUtil.release(walk);
+    }
+  }
+
+  //~--- get methods ----------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @param rc
+   *
+   * @return
+   */
+  private boolean isCreateCommand(ReceiveCommand rc)
+  {
+    return (rc.getResult() == ReceiveCommand.Result.OK)
+           && (rc.getType() == ReceiveCommand.Type.CREATE);
+  }
+
+  //~--- fields ---------------------------------------------------------------
+
+  /** Field description */
+  private RepositoryManager repositoryManager;
+}