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* 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,
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* See the License for the specific language governing permissions and
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package org.apache.provisionr.amazon.activities;
import com.amazonaws.services.ec2.AmazonEC2;
import com.amazonaws.services.ec2.model.DescribeSpotInstanceRequestsRequest;
import com.amazonaws.services.ec2.model.DescribeSpotInstanceRequestsResult;
import com.amazonaws.services.ec2.model.SpotInstanceRequest;
import static com.google.common.base.Preconditions.checkNotNull;
import com.google.common.base.Predicate;
import com.google.common.collect.Iterables;
import java.util.List;
import org.activiti.engine.delegate.DelegateExecution;
import org.apache.provisionr.amazon.ProcessVariables;
import org.apache.provisionr.amazon.core.ProviderClientCache;
import org.apache.provisionr.api.pool.Pool;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class AllSpotRequestsMatchPredicate extends AmazonActivity {
private static final Logger LOG = LoggerFactory.getLogger(AllSpotRequestsMatchPredicate.class);
private final String resultVariable;
private final Predicate<SpotInstanceRequest> predicate;
protected AllSpotRequestsMatchPredicate(ProviderClientCache cache, String resultVariable,
Predicate<SpotInstanceRequest> predicate) {
super(cache);
this.resultVariable = checkNotNull(resultVariable, "resultVariable is null");
this.predicate = checkNotNull(predicate, "predicate is null");
}
@Override
public void execute(AmazonEC2 client, Pool pool, DelegateExecution execution) {
LOG.info(">> Checking if all spot requests match predicate {}", predicate);
@SuppressWarnings("unchecked")
List<String> requestIds = (List<String>) execution.getVariable(ProcessVariables.SPOT_INSTANCE_REQUEST_IDS);
checkNotNull(requestIds, "process variable '{}' not found", ProcessVariables.SPOT_INSTANCE_REQUEST_IDS);
DescribeSpotInstanceRequestsRequest describeRequest = new DescribeSpotInstanceRequestsRequest();
describeRequest.setSpotInstanceRequestIds(requestIds);
// Retrieve all of the requests we want to monitor.
DescribeSpotInstanceRequestsResult describeResult = client.describeSpotInstanceRequests(describeRequest);
List<SpotInstanceRequest> requests = describeResult.getSpotInstanceRequests();
if (Iterables.all(requests, predicate)) {
LOG.info(">> All {} requests match predicate {} ", requests, predicate);
execution.setVariable(resultVariable, true);
} else {
LOG.info("<< Not all requests {} match predicate {}", requests, predicate);
execution.setVariable(resultVariable, false);
}
}
}