content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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 org.apache.camel.component.git.consumer;
  
  import java.util.ArrayDeque;
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Queue;
  
  import org.apache.camel.Exchange;
  import org.apache.camel.Processor;
  import org.apache.camel.component.git.GitConstants;
  import org.apache.camel.component.git.GitEndpoint;
  import org.eclipse.jgit.api.ListBranchCommand.ListMode;
  import org.eclipse.jgit.lib.Ref;
  
  public class GitBranchConsumer extends AbstractGitConsumer {
  
      private final List<String> branchesConsumed = new ArrayList<>();
  
      public GitBranchConsumer(GitEndpoint endpoint, Processor processor) {
          super(endpoint, processor);
      }
  
      @Override
      protected int poll() throws Exception {
          Queue<Object> exchanges = new ArrayDeque<>();
          List<Ref> call = getGit().branchList().setListMode(ListMode.ALL).call();
          for (Ref ref : call) {
              if (!branchesConsumed.contains(ref.getName())) {
                  Exchange e = createExchange(true);
                  e.getMessage().setBody(ref.getName());
                  e.getMessage().setHeader(GitConstants.GIT_BRANCH_NAME, ref.getName());
                  e.getMessage().setHeader(GitConstants.GIT_BRANCH_LEAF, ref.getLeaf().getName());
                  e.getMessage().setHeader(GitConstants.GIT_BRANCH_OBJECT_ID, ref.getObjectId().getName());
                  exchanges.add(e);
              }
          }
          return processBatch(exchanges);
      }
  
      @Override
      public Object onPreProcessed(Exchange exchange) {
          return exchange.getMessage().getHeader(GitConstants.GIT_BRANCH_NAME, String.class);
      }
  
      @Override
      public void onProcessed(Exchange exchange, Object value) {
          if (value != null) {
              branchesConsumed.add(value.toString());
          }
      }
  
  }
  