org.jclouds.cloudloadbalancers.functions.UnwrapLoadBalancers.java Source code

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Here is the source code for org.jclouds.cloudloadbalancers.functions.UnwrapLoadBalancers.java

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/**
 *
 * Copyright (C) 2011 Cloud Conscious, LLC. <info@cloudconscious.com>
 *
 * ====================================================================
 * 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.cloudloadbalancers.functions;

import java.util.Map;
import java.util.Set;

import javax.inject.Inject;

import org.jclouds.cloudloadbalancers.domain.LoadBalancer;
import org.jclouds.http.HttpRequest;
import org.jclouds.http.HttpResponse;
import org.jclouds.http.functions.ParseJson;
import org.jclouds.rest.InvocationContext;

import com.google.common.base.Function;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterables;

/**
 * @author Adrian Cole
 */
public class UnwrapLoadBalancers
        implements Function<HttpResponse, Set<LoadBalancer>>, InvocationContext<UnwrapLoadBalancers> {

    private final ParseJson<Map<String, Set<LB>>> json;
    private ConvertLB convertLB;

    @Inject
    UnwrapLoadBalancers(ParseJson<Map<String, Set<LB>>> json) {
        this.json = json;
    }

    @Override
    public Set<LoadBalancer> apply(HttpResponse arg0) {
        Map<String, Set<LB>> map = json.apply(arg0);
        if (map.size() == 0)
            return ImmutableSet.<LoadBalancer>of();
        ;
        return ImmutableSet.copyOf(Iterables.transform(Iterables.get(map.values(), 0), convertLB));
    }

    @Override
    public UnwrapLoadBalancers setContext(HttpRequest request) {
        return setRegion(
                request.getEndpoint().getHost().substring(0, request.getEndpoint().getHost().indexOf('.')));
    }

    UnwrapLoadBalancers setRegion(String region) {
        this.convertLB = new ConvertLB(region);
        return this;
    }

}