/**
* 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.whirr.service.yarn;
import static org.apache.whirr.RolePredicates.role;
import static org.apache.whirr.service.yarn.YarnConfigurationBuilder.build;
import static org.jclouds.scriptbuilder.domain.Statements.call;
import java.io.IOException;
import java.util.Set;
import org.apache.commons.configuration.Configuration;
import org.apache.commons.configuration.ConfigurationException;
import org.apache.whirr.Cluster;
import org.apache.whirr.ClusterSpec;
import org.apache.whirr.Cluster.Instance;
import org.apache.whirr.service.ClusterActionEvent;
import org.apache.whirr.service.FirewallManager.Rule;
public class YarnNodeManagerHandler extends YarnHandler {
public static final String ROLE = "yarn-nodemanager";
public static final int NODE_MANAGER_WEB_UI_PORT = 9999;
@Override
public String getRole() {
return ROLE;
}
@Override
protected void beforeConfigure(ClusterActionEvent event) throws IOException,
InterruptedException {
ClusterSpec clusterSpec = event.getClusterSpec();
Configuration conf = getConfiguration(clusterSpec);
Cluster cluster = event.getCluster();
Set<Instance> nodeManagers = cluster.getInstancesMatching(role(ROLE));
if (!nodeManagers.isEmpty()) {
for(Instance nodeManager : nodeManagers) {
event.getFirewallManager().addRules(
Rule.create()
.destination(nodeManager)
.ports(NODE_MANAGER_WEB_UI_PORT)
);
}
}
handleFirewallRules(event);
try {
event.getStatementBuilder().addStatements(
build("/tmp/yarn-site.xml", clusterSpec, cluster, ROLE)
);
} catch (ConfigurationException e) {
throw new IOException(e);
}
addStatement(event, call(getConfigureFunction(conf)));
addStatement(event, call(getStartFunction(conf), "nodemanager"));
}
}