/**
* Licensed to jclouds, Inc. (jclouds) under one or more
* contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. jclouds 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.openstack.nova.v2_0.predicates;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;
import java.util.NoSuchElementException;
import java.util.concurrent.atomic.AtomicReference;
import javax.annotation.Resource;
import javax.inject.Singleton;
import org.jclouds.logging.Logger;
import org.jclouds.openstack.nova.v2_0.NovaApi;
import org.jclouds.openstack.nova.v2_0.domain.SecurityGroup;
import org.jclouds.openstack.nova.v2_0.domain.zonescoped.SecurityGroupInZone;
import org.jclouds.openstack.nova.v2_0.domain.zonescoped.ZoneAndName;
import org.jclouds.openstack.nova.v2_0.extensions.SecurityGroupApi;
import org.jclouds.rest.ResourceNotFoundException;
import com.google.common.base.Optional;
import com.google.common.base.Predicate;
import com.google.common.collect.Iterables;
import com.google.inject.Inject;
/**
* AtomicReference is so that we can return the securityGroup that matched.
*
* @author Adrian Cole
*/
@Singleton
public class FindSecurityGroupWithNameAndReturnTrue implements Predicate<AtomicReference<ZoneAndName>> {
private final NovaApi novaApi;
@Resource
protected Logger logger = Logger.NULL;
@Inject
public FindSecurityGroupWithNameAndReturnTrue(NovaApi novaApi) {
this.novaApi = checkNotNull(novaApi, "novaApi");
}
public boolean apply(AtomicReference<ZoneAndName> securityGroupInZoneRef) {
checkNotNull(securityGroupInZoneRef, "securityGroupRef");
final ZoneAndName securityGroupInZone = checkNotNull(securityGroupInZoneRef.get(), "securityGroupInZone");
Optional<? extends SecurityGroupApi> api = novaApi.getSecurityGroupExtensionForZone(securityGroupInZone.getZone());
checkArgument(api.isPresent(), "Security groups are required, but the extension is not available!");
logger.trace("looking for security group %s", securityGroupInZone.slashEncode());
try {
SecurityGroup returnVal = Iterables.find(api.get().list(), new Predicate<SecurityGroup>() {
@Override
public boolean apply(SecurityGroup input) {
return input.getName().equals(securityGroupInZone.getName());
}
});
securityGroupInZoneRef.set(new SecurityGroupInZone(returnVal, securityGroupInZone.getZone()));
return true;
} catch (ResourceNotFoundException e) {
return false;
} catch (NoSuchElementException e) {
return false;
}
}
}