/**
* 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.controller.logging;
import java.util.List;
import javax.inject.Inject;
import org.apache.ambari.server.AmbariException;
import org.apache.ambari.server.configuration.Configuration;
import org.apache.ambari.server.controller.AmbariManagementController;
import org.apache.ambari.server.state.Cluster;
import org.apache.ambari.server.state.Clusters;
import org.apache.ambari.server.state.Config;
import org.apache.ambari.server.state.ServiceComponentHost;
import org.apache.ambari.server.state.State;
import org.apache.log4j.Logger;
public class LoggingRequestHelperFactoryImpl implements LoggingRequestHelperFactory {
private static final Logger LOG = Logger.getLogger(LoggingRequestHelperFactoryImpl.class);
private static final String LOGSEARCH_ENV_CONFIG_TYPE_NAME = "logsearch-env";
private static final String LOGSEARCH_SERVICE_NAME = "LOGSEARCH";
private static final String LOGSEARCH_SERVER_COMPONENT_NAME = "LOGSEARCH_SERVER";
private static final String LOGSEARCH_UI_PORT_PROPERTY_NAME = "logsearch_ui_port";
private static final String LOGSEARCH_UI_PROTOCOL = "logsearch_ui_protocol";
@Inject
private Configuration ambariServerConfiguration;
@Override
public LoggingRequestHelper getHelper(AmbariManagementController ambariManagementController, String clusterName) {
if (ambariServerConfiguration == null) {
LOG.error("Ambari Server configuration object not available, cannot create request helper");
return null;
}
Clusters clusters =
ambariManagementController.getClusters();
try {
Cluster cluster = clusters.getCluster(clusterName);
if (cluster != null) {
boolean isLogSearchEnabled =
cluster.getServices().containsKey(LOGSEARCH_SERVICE_NAME);
if (!isLogSearchEnabled) {
// log search not enabled, just return null, since no helper impl is necessary
return null;
}
Config logSearchEnvConfig =
cluster.getDesiredConfigByType(LOGSEARCH_ENV_CONFIG_TYPE_NAME);
List<ServiceComponentHost> listOfMatchingHosts =
cluster.getServiceComponentHosts(LOGSEARCH_SERVICE_NAME, LOGSEARCH_SERVER_COMPONENT_NAME);
if (listOfMatchingHosts.size() == 0) {
LOG.warn("No matching LOGSEARCH_SERVER instances found, this may indicate a deployment problem. Please verify that LogSearch is deployed and running.");
return null;
}
if (listOfMatchingHosts.size() > 1) {
LOG.warn("More than one LOGSEARCH_SERVER instance found, this may be a deployment error. Only the first LOGSEARCH_SERVER instance will be used.");
}
ServiceComponentHost serviceComponentHost =
listOfMatchingHosts.get(0);
if (serviceComponentHost.getState() != State.STARTED) {
// if the LOGSEARCH_SERVER is not started, don't attempt to connect
return null;
}
final String logSearchHostName = serviceComponentHost.getHostName();
final String logSearchPortNumber =
logSearchEnvConfig.getProperties().get(LOGSEARCH_UI_PORT_PROPERTY_NAME);
final String logSearchProtocol =
logSearchEnvConfig.getProperties().get(LOGSEARCH_UI_PROTOCOL);
final LoggingRequestHelperImpl loggingRequestHelper = new LoggingRequestHelperImpl(logSearchHostName, logSearchPortNumber, logSearchProtocol, ambariManagementController.getCredentialStoreService(), cluster);
// set configured timeouts for the Ambari connection to the LogSearch Portal service
loggingRequestHelper.setLogSearchConnectTimeoutInMilliseconds(ambariServerConfiguration.getLogSearchPortalConnectTimeout());
loggingRequestHelper.setLogSearchReadTimeoutInMilliseconds(ambariServerConfiguration.getLogSearchPortalReadTimeout());
return loggingRequestHelper;
}
} catch (AmbariException ambariException) {
LOG.error("Error occurred while trying to obtain the cluster, cluster name = " + clusterName, ambariException);
}
return null;
}
/**
* Package-level setter to facilitate simpler unit testing
*
* @param ambariServerConfiguration the Ambari Server configuration properties
*/
void setAmbariServerConfiguration(Configuration ambariServerConfiguration) {
this.ambariServerConfiguration = ambariServerConfiguration;
}
}