Java tutorial
/* * 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.jclouds.gogrid.predicates; import static com.google.common.base.Preconditions.checkNotNull; import static org.jclouds.gogrid.options.GetJobListOptions.Builder.latestJobForObjectByName; import javax.annotation.Resource; import javax.inject.Singleton; import org.jclouds.gogrid.domain.Job; import org.jclouds.gogrid.domain.JobState; import org.jclouds.gogrid.domain.LoadBalancer; import org.jclouds.gogrid.services.GridJobClient; import org.jclouds.logging.Logger; import com.google.common.base.Predicate; import com.google.common.collect.Iterables; import com.google.inject.Inject; /** * @author Oleksiy Yarmula */ @Singleton public class LoadBalancerLatestJobCompleted implements Predicate<LoadBalancer> { protected GridJobClient jobClient; @Resource protected Logger logger = Logger.NULL; @Inject public LoadBalancerLatestJobCompleted(GridJobClient jobClient) { this.jobClient = jobClient; } @Override public boolean apply(LoadBalancer loadBalancer) { checkNotNull(loadBalancer, "Load balancer must be a valid instance"); checkNotNull(loadBalancer.getName(), "Load balancer must be a valid name"); Job latestJob = Iterables .getOnlyElement(jobClient.getJobList(latestJobForObjectByName(loadBalancer.getName()))); return JobState.SUCCEEDED.equals(latestJob.getCurrentState()); } }