/*
* 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.karaf.command;
import org.apache.felix.gogo.commands.Command;
import org.apache.whirr.ClusterSpec;
import org.apache.whirr.cli.command.ListClusterCommand;
import org.apache.whirr.karaf.command.support.WhirrCommandSupport;
@Command(scope = "whirr", name = "list-cluster", description = "List the nodes in a cluster.")
public class ListCluster extends WhirrCommandSupport {
@Override
protected Object doExecute() throws Exception {
validateInput();
ListClusterCommand command = new ListClusterCommand(clusterControllerFactory);
ClusterSpec clusterSpec = getClusterSpec();
if (clusterSpec != null) {
command.run(System.in, System.out, System.err, clusterSpec);
}
return null;
}
public void validateInput() throws Exception {
if (pid != null || fileName != null) {
return;
} else {
if ((name == null || getComputeServiceByName(name) == null) && (provider == null || getComputeServiceByProvider(provider) == null)) {
throw new Exception("A proper configuration or a valid compute name / provider should be provided.");
}
}
}
}