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.ambari.server.serveraction;
  
  import java.util.Map;
  import java.util.concurrent.ConcurrentMap;
  
  import org.apache.ambari.server.AmbariException;
  import org.apache.ambari.server.actionmanager.HostRoleStatus;
  import org.apache.ambari.server.agent.CommandReport;
  import org.apache.ambari.server.agent.ExecutionCommand;
  import org.apache.ambari.server.state.Clusters;
  
  import com.google.inject.Inject;
  
  /**
   * The MockServerAction is an implementation of a ServerAction strictly used to testing purposes.
   * <p/>
   * This class helps to generate several scenarios from success cases to failure cases.  The
   * force_fail command parameter can be used to generate different failure cases:
   * <ul>
   * <li>exception
   * - Causes the action to fail by throwing an AmbariException</li>
   * <li>timeout
   * - Causes the action to fail by timing out (the COMMAND_TIMEOUT value must be set to a reasonable
   * value)</li>
   * </dl>
   * <p/>
   * If not instructed to fail, this implementation will attempt to increment a "data" counter in a
   * shared data context - if available.
   */
  public class MockServerAction extends AbstractServerAction {
  
    public static final String PAYLOAD_FORCE_FAIL = "force_fail";
  
    @Inject
    private Clusters clusters;
  
    @Override
    public CommandReport execute(ConcurrentMap<String, Object> requestSharedDataContext)
        throws AmbariException, InterruptedException {
  
      Map<String, String> commandParameters = getCommandParameters();
  
      if (clusters == null) { // Ensure that the injected Clusters object exists...
        throw new AmbariException("Missing payload");
      } else if (commandParameters == null) {
        throw new AmbariException("Missing payload");
      } else if ("exception".equalsIgnoreCase(commandParameters.get(PAYLOAD_FORCE_FAIL))) {
        throw new AmbariException("Failing execution by request");
      } else if ("report".equalsIgnoreCase(commandParameters.get(PAYLOAD_FORCE_FAIL))) {
        return createCommandReport(1, HostRoleStatus.FAILED, null, "Forced fail via command", "Failing execution by request");
      } else {
        if ("timeout".equalsIgnoreCase(commandParameters.get(PAYLOAD_FORCE_FAIL))) {
          Long timeout;
  
          try {
            timeout = (commandParameters.containsKey(ExecutionCommand.KeyNames.COMMAND_TIMEOUT))
                ? Long.parseLong(commandParameters.get(ExecutionCommand.KeyNames.COMMAND_TIMEOUT)) * 1000 // Convert seconds to milliseconds
                : null;
          } catch (NumberFormatException e) {
            timeout = null;
          }
  
          if (timeout != null) {
            Thread.sleep(timeout * 10);
          }
        }
  
        // Test updating the shared data context...
        if (requestSharedDataContext != null) {
          Integer data = (Integer) requestSharedDataContext.get("Data");
  
          if (data == null) {
            data = 0;
          }
  
          requestSharedDataContext.put("Data", ++data);
        }
  
        return createCommandReport(0, HostRoleStatus.COMPLETED, null, "Success!", null);
      }
    }
  }