/*
* 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.ec2.compute.functions;
import static com.google.common.base.Preconditions.checkNotNull;
import javax.annotation.Resource;
import javax.inject.Named;
import javax.inject.Singleton;
import org.jclouds.compute.functions.GroupNamingConvention;
import org.jclouds.compute.reference.ComputeServiceConstants;
import org.jclouds.ec2.EC2Client;
import org.jclouds.ec2.compute.domain.RegionAndName;
import org.jclouds.ec2.domain.KeyPair;
import org.jclouds.logging.Logger;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.Function;
import com.google.inject.Inject;
/**
*
* @author Adrian Cole
*/
@Singleton
public class CreateUniqueKeyPair implements Function<RegionAndName, KeyPair> {
@Resource
@Named(ComputeServiceConstants.COMPUTE_LOGGER)
protected Logger logger = Logger.NULL;
protected final EC2Client ec2Client;
protected final GroupNamingConvention.Factory namingConvention;
@Inject
public CreateUniqueKeyPair(EC2Client ec2Client, GroupNamingConvention.Factory namingConvention) {
this.ec2Client = ec2Client;
this.namingConvention = checkNotNull(namingConvention, "namingConvention");
}
@Override
public KeyPair apply(RegionAndName from) {
return createNewKeyPairInRegion(from.getRegion(), from.getName());
}
@VisibleForTesting
KeyPair createNewKeyPairInRegion(String region, String group) {
checkNotNull(region, "region");
checkNotNull(group, "group");
logger.debug(">> creating keyPair region(%s) group(%s)", region, group);
KeyPair keyPair = null;
String prefix = group;
while (keyPair == null) {
String keyName = namingConvention.create().uniqueNameForGroup(prefix);
try {
keyPair = ec2Client.getKeyPairServices().createKeyPairInRegion(region, keyName);
} catch (IllegalStateException e) {
logger.trace(" invalid keyname (%s in %s); retrying", keyName, region);
}
}
logger.debug("<< created keyPair(%s)", keyPair);
return keyPair;
}
}