/*
* 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.cloudstack.strategy;
import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.base.Preconditions.checkState;
import javax.annotation.Resource;
import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;
import org.jclouds.cloudstack.CloudStackApi;
import org.jclouds.cloudstack.domain.AsyncCreateResponse;
import org.jclouds.cloudstack.domain.AsyncJob;
import org.jclouds.compute.reference.ComputeServiceConstants;
import org.jclouds.logging.Logger;
import com.google.common.base.Predicate;
import com.google.common.util.concurrent.UncheckedExecutionException;
@Singleton
public class BlockUntilJobCompletesAndReturnResult {
@Resource
@Named(ComputeServiceConstants.COMPUTE_LOGGER)
protected Logger logger = Logger.NULL;
private final CloudStackApi client;
private final Predicate<String> jobComplete;
@Inject
public BlockUntilJobCompletesAndReturnResult(CloudStackApi client, Predicate<String> jobComplete) {
this.client = checkNotNull(client, "client");
this.jobComplete = checkNotNull(jobComplete, "jobComplete");
}
/**
*
* @param job
* @return result of the job's execution
* @throws ExecutionException
* if the job contained an error
*/
public <T> T apply(AsyncCreateResponse job) {
boolean completed = jobComplete.apply(job.getJobId());
logger.trace("<< job(%s) complete(%s)", job, completed);
AsyncJob<T> jobWithResult = client.getAsyncJobApi().<T> getAsyncJob(job.getJobId());
checkState(completed, "job %s failed to complete in time %s", job.getJobId(), jobWithResult);
if (jobWithResult.getError() != null)
throw new UncheckedExecutionException(String.format("job %s failed with exception %s", job.getJobId(),
jobWithResult.getError().toString())) {
};
return jobWithResult.getResult();
}
}