/*
* 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.flume.node;
import org.apache.flume.lifecycle.LifecycleAware;
import org.apache.flume.lifecycle.LifecycleState;
import org.apache.flume.lifecycle.LifecycleSupervisor;
import org.apache.flume.lifecycle.LifecycleSupervisor.SupervisorPolicy;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.base.Preconditions;
public class FlumeNode implements LifecycleAware {
private static final Logger logger = LoggerFactory.getLogger(FlumeNode.class);
private String name;
private LifecycleState lifecycleState;
private NodeManager nodeManager;
private ConfigurationProvider configurationProvider;
private LifecycleSupervisor supervisor;
public FlumeNode() {
supervisor = new LifecycleSupervisor();
}
@Override
public void start() {
Preconditions.checkState(name != null, "Node name can not be null");
Preconditions.checkState(nodeManager != null,
"Node manager can not be null");
supervisor.start();
logger.info("Flume node starting - {}", name);
supervisor.supervise(nodeManager,
new SupervisorPolicy.AlwaysRestartPolicy(), LifecycleState.START);
supervisor.supervise(configurationProvider,
new SupervisorPolicy.AlwaysRestartPolicy(), LifecycleState.START);
lifecycleState = LifecycleState.START;
}
@Override
public void stop() {
logger.info("Flume node stopping - {}", name);
supervisor.stop();
lifecycleState = LifecycleState.STOP;
}
@Override
public String toString() {
return "{ name:" + name + " nodeManager:" + nodeManager
+ " configurationProvider:" + configurationProvider + " }";
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public NodeManager getNodeManager() {
return nodeManager;
}
public void setNodeManager(NodeManager nodeManager) {
this.nodeManager = nodeManager;
}
public ConfigurationProvider getConfigurationProvider() {
return configurationProvider;
}
public void setConfigurationProvider(
ConfigurationProvider configurationProvider) {
this.configurationProvider = configurationProvider;
}
@Override
public LifecycleState getLifecycleState() {
return lifecycleState;
}
}