org.jclouds.glesys.functions.ParseServerTemplatesFromHttpResponse.java Source code

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Here is the source code for org.jclouds.glesys.functions.ParseServerTemplatesFromHttpResponse.java

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/**
 * 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.glesys.functions;

import static com.google.common.base.Preconditions.checkNotNull;

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

import javax.inject.Singleton;

import org.jclouds.glesys.domain.ServerTemplate;
import org.jclouds.http.HttpResponse;
import org.jclouds.http.functions.ParseFirstJsonValueNamed;
import org.jclouds.json.internal.GsonWrapper;

import com.google.common.base.Function;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterables;
import com.google.inject.Inject;
import com.google.inject.TypeLiteral;

/**
 * @author Adrian Cole
 */
@Singleton
public class ParseServerTemplatesFromHttpResponse implements Function<HttpResponse, Set<ServerTemplate>> {
    private final ParseFirstJsonValueNamed<Map<String, Set<ServerTemplate>>> parser;

    @Inject
    public ParseServerTemplatesFromHttpResponse(GsonWrapper gsonWrapper) {
        this.parser = new ParseFirstJsonValueNamed<Map<String, Set<ServerTemplate>>>(
                checkNotNull(gsonWrapper, "gsonWrapper"), new TypeLiteral<Map<String, Set<ServerTemplate>>>() {
                }, "templates");
    }

    public Set<ServerTemplate> apply(HttpResponse response) {
        checkNotNull(response, "response");
        Map<String, Set<ServerTemplate>> toParse = parser.apply(response);
        checkNotNull(toParse, "parsed result from %s", response);
        return ImmutableSet.copyOf(Iterables.concat(toParse.values()));
    }
}