/***************************************************************************
* Copyright (c) 2012-2013 VMware, Inc. All Rights Reserved.
* Licensed 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 com.vmware.bdd.manager.job;
import org.apache.commons.lang.math.RandomUtils;
import org.apache.log4j.Logger;
import org.springframework.batch.core.scope.context.ChunkContext;
import org.springframework.batch.repeat.RepeatStatus;
import com.vmware.bdd.apitypes.ClusterCreate;
import com.vmware.bdd.exception.BddException;
import com.vmware.bdd.service.job.JobExecutionStatusHolder;
import com.vmware.bdd.service.job.TrackableTasklet;
public class ProvisionTasklet extends TrackableTasklet {
private static final Logger logger = Logger.getLogger(ProvisionTasklet.class);
private void randomlyFail(double p) throws Exception {
if (RandomUtils.nextDouble() > 1 - p) {
throw BddException.INTERNAL(new Exception(),
"Undefined random failure.");
}
}
@Override
public RepeatStatus executeStep(ChunkContext chunkContext,
JobExecutionStatusHolder jobExecutionStatusHolder) throws Exception {
getFromJobExecutionContext(chunkContext, "clusterCreate", ClusterCreate.class);
Thread.sleep(500);
logger.info("provision cluster vms: "
+ getJobParameters(chunkContext).getString("cluster.name"));
Integer processed = getFromJobExecutionContext(chunkContext, "processed.count", Integer.class);
for (int i = processed == null ? 0 : processed; i < 100; ++i) {
logger.info("provision vm #" + i);
putIntoJobExecutionContext(chunkContext, "processed.count", i);
jobExecutionStatusHolder.setCurrentStepProgress(
getJobExecutionId(chunkContext), i / 100.0);
Thread.sleep(10);
randomlyFail(0.02);
}
return RepeatStatus.FINISHED;
}
}