/**
* 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.hbase;
import static org.apache.whirr.RolePredicates.role;
import static org.apache.whirr.service.FirewallManager.Rule;
import static org.apache.whirr.service.hbase.HBaseConfigurationBuilder.buildHBaseEnv;
import static org.apache.whirr.service.hbase.HBaseConfigurationBuilder.buildHBaseSite;
import static org.jclouds.scriptbuilder.domain.Statements.call;
import org.apache.whirr.template.TemplateUtils;
import java.io.IOException;
import java.net.InetAddress;
import org.apache.commons.configuration.Configuration;
import org.apache.commons.configuration.ConfigurationException;
import org.apache.whirr.Cluster;
import org.apache.whirr.Cluster.Instance;
import org.apache.whirr.ClusterSpec;
import org.apache.whirr.service.ClusterActionEvent;
import org.apache.whirr.service.zookeeper.ZooKeeperCluster;
public class HBaseRegionServerClusterActionHandler extends HBaseClusterActionHandler {
public static final String ROLE = "hbase-regionserver";
public static final int REGIONSERVER_PORT = 60020;
public static final int REGIONSERVER_WEB_UI_PORT = 60030;
@Override
public String getRole() {
return ROLE;
}
@Override
protected void beforeBootstrap(ClusterActionEvent event) throws IOException {
ClusterSpec clusterSpec = event.getClusterSpec();
Configuration conf = getConfiguration(clusterSpec);
addStatement(event, call("retry_helpers"));
addStatement(event, call("configure_hostnames"));
addStatement(event, call("install_tarball"));
addStatement(event, call(getInstallFunction(conf, "java", "install_openjdk")));
String tarurl = prepareRemoteFileUrl(event,
getConfiguration(clusterSpec).getString(HBaseConstants.KEY_TARBALL_URL));
addStatement(event, call(
getInstallFunction(getConfiguration(clusterSpec)),
HBaseConstants.PARAM_TARBALL_URL, tarurl)
);
}
@Override
protected void beforeConfigure(ClusterActionEvent event)
throws IOException, InterruptedException {
ClusterSpec clusterSpec = event.getClusterSpec();
Cluster cluster = event.getCluster();
Configuration conf = getConfiguration(clusterSpec);
Instance instance = cluster.getInstanceMatching(
role(HBaseMasterClusterActionHandler.ROLE));
InetAddress masterPublicAddress = instance.getPublicAddress();
event.getFirewallManager().addRules(
Rule.create()
.destination(instance)
.ports(REGIONSERVER_WEB_UI_PORT, REGIONSERVER_PORT)
);
//Velocity is assuming flat classloaders or TCCL to load templates.
//This doesn't work in OSGi unless we set the TCCL to the bundle classloader before invocation
ClassLoader oldTccl = Thread.currentThread().getContextClassLoader();
handleFirewallRules(event);
try {
Thread.currentThread().setContextClassLoader(getClass().getClassLoader());
event.getStatementBuilder().addStatements(
buildHBaseSite("/tmp/hbase-site.xml", clusterSpec, cluster),
buildHBaseEnv("/tmp/hbase-env.sh", clusterSpec, cluster),
TemplateUtils.createFileFromTemplate("/tmp/hbase-hadoop-metrics.properties", event.getTemplateEngine(), getMetricsTemplate(event, clusterSpec, cluster), clusterSpec, cluster)
);
} catch (ConfigurationException e) {
throw new IOException(e);
} finally {
Thread.currentThread().setContextClassLoader(oldTccl);
}
String master = masterPublicAddress.getHostName();
String quorum = ZooKeeperCluster.getHosts(cluster);
String tarurl = prepareRemoteFileUrl(event,
conf.getString(HBaseConstants.KEY_TARBALL_URL));
addStatement(event, call("retry_helpers"));
addStatement(event, call(
getConfigureFunction(conf),
ROLE,
HBaseConstants.PARAM_MASTER, master,
HBaseConstants.PARAM_QUORUM, quorum,
HBaseConstants.PARAM_TARBALL_URL, tarurl)
);
}
}