/*
* 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.aws.ec2.functions;
import static com.google.common.base.Preconditions.checkNotNull;
import static org.jclouds.ssh.SshKeys.fingerprintPublicKey;
import javax.annotation.Resource;
import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;
import org.jclouds.aws.ec2.AWSEC2Client;
import org.jclouds.aws.ec2.domain.RegionNameAndPublicKeyMaterial;
import org.jclouds.compute.reference.ComputeServiceConstants;
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.common.collect.Iterables;
/**
*
* @author Adrian Cole
*/
@Singleton
public class ImportOrReturnExistingKeypair implements Function<RegionNameAndPublicKeyMaterial, KeyPair> {
@Resource
@Named(ComputeServiceConstants.COMPUTE_LOGGER)
protected Logger logger = Logger.NULL;
protected final AWSEC2Client ec2Client;
@Inject
public ImportOrReturnExistingKeypair(AWSEC2Client ec2Client) {
this.ec2Client = ec2Client;
}
@Override
public KeyPair apply(RegionNameAndPublicKeyMaterial from) {
return importOrReturnExistingKeypair(from.getRegion(), from.getName(), from.getPublicKeyMaterial());
}
@VisibleForTesting
KeyPair importOrReturnExistingKeypair(String region, String group, String publicKeyMaterial) {
checkNotNull(region, "region");
checkNotNull(group, "group");
checkNotNull(publicKeyMaterial, "publicKeyMaterial");
logger.debug(">> importing keyPair region(%s) group(%s)", region, group);
KeyPair keyPair = null;
// loop for eventual consistency or race condition.
// as this command is idempotent, it should be ok
while (keyPair == null)
try {
keyPair = ec2Client.getKeyPairServices().importKeyPairInRegion(region, "jclouds#" + group,
publicKeyMaterial);
keyPair = addFingerprintToKeyPair(publicKeyMaterial, keyPair);
logger.debug("<< imported keyPair(%s)", keyPair);
} catch (IllegalStateException e) {
keyPair = Iterables.getFirst(ec2Client.getKeyPairServices().describeKeyPairsInRegion(region,
"jclouds#" + group), null);
if (keyPair != null) {
keyPair = addFingerprintToKeyPair(publicKeyMaterial, keyPair);
logger.debug("<< retrieved existing keyPair(%s)", keyPair);
}
}
return keyPair;
}
public KeyPair addFingerprintToKeyPair(String publicKeyMaterial, KeyPair keyPair) {
// add in the fingerprint as it makes correlating keys in ssh logs possible
keyPair = keyPair.toBuilder().fingerprint(fingerprintPublicKey(publicKeyMaterial)).build();
return keyPair;
}
}