org.jclouds.aws.ec2.binders.IfNotNullBindAvailabilityZoneToFormParam Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of jclouds-aws Show documentation

jclouds Core components to access Amazon AWS

The newest version!

/**
 *
 * Copyright (C) 2010 Cloud Conscious, LLC. 
 *
 * ====================================================================
 * 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 org.jclouds.aws.ec2.binders;

import static com.google.common.base.Preconditions.checkArgument;
import static org.jclouds.http.HttpUtils.addFormParamTo;

import javax.inject.Singleton;

import org.jclouds.http.HttpRequest;
import org.jclouds.rest.Binder;

/**
 * Binds the AvailabilityZone to a form parameter if set.
 * 
 * @author Adrian Cole
 */
@Singleton
public class IfNotNullBindAvailabilityZoneToFormParam implements Binder {
   public void bindToRequest(HttpRequest request, Object input) {
      if (input != null) {
         checkArgument(input instanceof String, "this binder is only valid for AvailabilityZone!");
         addFormParamTo(request, "Placement.AvailabilityZone", (String) input);
      }
   }

}