/*
* 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);
}
}
}