apis/openstack-nova/src/main/java/org/jclouds/openstack/nova/v2_0/functions/ParseImageIdFromLocationHeader.java

/*
 * 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.openstack.nova.v2_0.functions;

import javax.inject.Singleton;

import org.jclouds.http.HttpResponse;

import com.google.common.base.Function;
import com.google.common.net.HttpHeaders;

/**
 * This parses {@link Image} from the body of the link in the Location header of the HTTPResponse.
 */
@Singleton
public class ParseImageIdFromLocationHeader implements Function<HttpResponse, String> {

	public String apply(HttpResponse response) {
        String location = response.getFirstHeaderOrNull(HttpHeaders.LOCATION);
        String[] parts = location.split("/");
        return parts[parts.length - 1];
    }
}