Merged #6 "Support serving repositories over the SSH transport"

James Moger

2014-04-11 436bd3f0ecdee282c503a9eb0f7a240b7a68ff49

 src/main/java/com/gitblit/transport/ssh/git/BaseGitCommand.java

New file
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/*
 * Copyright 2014 gitblit.com.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.gitblit.transport.ssh.git;

import java.io.IOException;

import org.apache.sshd.server.Environment;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.transport.resolver.ReceivePackFactory;
import org.eclipse.jgit.transport.resolver.UploadPackFactory;
import org.kohsuke.args4j.Argument;

import com.gitblit.git.GitblitReceivePackFactory;
import com.gitblit.git.GitblitUploadPackFactory;
import com.gitblit.git.RepositoryResolver;
import com.gitblit.transport.ssh.SshDaemonClient;
import com.gitblit.transport.ssh.commands.BaseCommand;

/**
 * @author Eric Myhre
 *
 */
abstract class BaseGitCommand extends BaseCommand {
   @Argument(index = 0, metaVar = "REPOSITORY", required = true, usage = "repository name")
   protected String repository;

   protected RepositoryResolver<SshDaemonClient> repositoryResolver;
   protected ReceivePackFactory<SshDaemonClient> receivePackFactory;
   protected UploadPackFactory<SshDaemonClient> uploadPackFactory;

   protected Repository repo;

   @Override
   public void destroy() {
      super.destroy();

      repositoryResolver = null;
      receivePackFactory = null;
      uploadPackFactory = null;
      repo = null;
   }

   @Override
   public void start(final Environment env) {
      startThread(new RepositoryCommandRunnable() {
         @Override
         public void run() throws Exception {
            parseCommandLine();
            BaseGitCommand.this.service();
         }

         @Override
         public String getRepository() {
            return repository;
         }
      });
   }

   private void service() throws IOException, Failure {
      try {
         repo = openRepository();
         runImpl();
      } finally {
         if (repo != null) {
            repo.close();
         }
      }
   }

   protected abstract void runImpl() throws IOException, Failure;

   protected Repository openRepository() throws Failure {
      // Assume any attempt to use \ was by a Windows client
      // and correct to the more typical / used in Git URIs.
      //
      repository = repository.replace('\\', '/');
      // ssh://git@thishost/path should always be name="/path" here
      //
      if (!repository.startsWith("/")) {
         throw new Failure(1, "fatal: '" + repository + "': not starts with / character");
      }
      repository = repository.substring(1);
      try {
         return repositoryResolver.open(getContext().getClient(), repository);
      } catch (Exception e) {
         throw new Failure(1, "fatal: '" + repository + "': not a git archive", e);
      }
   }

   public void setRepositoryResolver(RepositoryResolver<SshDaemonClient> repositoryResolver) {
      this.repositoryResolver = repositoryResolver;
   }

   public void setReceivePackFactory(GitblitReceivePackFactory<SshDaemonClient> receivePackFactory) {
      this.receivePackFactory = receivePackFactory;
   }

   public void setUploadPackFactory(GitblitUploadPackFactory<SshDaemonClient> uploadPackFactory) {
      this.uploadPackFactory = uploadPackFactory;
   }
}