/**
* 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.kerberos;
import static org.apache.whirr.RolePredicates.role;
import static org.jclouds.scriptbuilder.domain.Statements.call;
import java.io.IOException;
import java.util.NoSuchElementException;
import org.apache.commons.configuration.Configuration;
import org.apache.whirr.Cluster.Instance;
import org.apache.whirr.ClusterSpec;
import org.apache.whirr.service.ClusterActionEvent;
import org.apache.whirr.service.ClusterActionHandlerSupport;
public abstract class KerberosBaseHandler extends ClusterActionHandlerSupport {
protected Configuration getConfiguration(ClusterSpec spec) throws IOException {
return getConfiguration(spec, "whirr-kerberos-default.properties");
}
@Override
protected void beforeBootstrap(ClusterActionEvent event) throws IOException {
addStatement(event, call("configure_hostnames"));
addStatement(event, call("retry_helpers"));
addStatement(event, call(getInstallFunction(event.getClusterSpec().getConfiguration(), "java", "install_openjdk")));
addStatement(event, call("install_kerberos_client"));
}
@Override
protected void beforeConfigure(ClusterActionEvent event) throws IOException {
Instance kerberosServerInstance = null;
try {
kerberosServerInstance = event.getCluster().getInstanceMatching(role(KerberosServerHandler.ROLE));
} catch (NoSuchElementException noSuchElementException) {
// ignore exception which a indicates client role has been configured
// without a cluster KDC role, but ensure the configure client script is
// not executed, which depends on the KDC hostname
}
if (kerberosServerInstance != null) {
addStatement(event, call("configure_kerberos_client", "-h", kerberosServerInstance.getPublicHostName()));
}
}
}