core/src/main/java/org/jclouds/chef/functions/ParseCookbookDefinitionListFromJsonv10.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.chef.functions;

import com.google.common.base.Function;
import org.jclouds.chef.domain.CookbookDefinition;
import org.jclouds.http.HttpResponse;
import org.jclouds.http.functions.ParseJson;

import javax.inject.Inject;
import javax.inject.Singleton;
import java.util.Map;
import java.util.Set;

import static com.google.common.collect.Iterables.transform;
import static com.google.common.collect.Sets.newLinkedHashSet;

/**
 * Parses the cookbook versions in a Chef Server >= 0.10.8.
 */
@Singleton
public class ParseCookbookDefinitionListFromJsonv10 implements Function<HttpResponse, Set<CookbookDefinition>> {

   /**
    * Parser for responses from chef server >= 0.10.8
    */
   private final ParseJson<Map<String, CookbookDefinition>> parser;

   @Inject
   ParseCookbookDefinitionListFromJsonv10(ParseJson<Map<String, CookbookDefinition>> parser) {
      this.parser = parser;
   }

   @Override
   public Set<CookbookDefinition> apply(HttpResponse response) {
      Set<Map.Entry<String, CookbookDefinition>> result = parser.apply(response).entrySet();
      return newLinkedHashSet(transform(result, new Function<Map.Entry<String, CookbookDefinition>, CookbookDefinition>() {
         @Override
         public CookbookDefinition apply(Map.Entry<String, CookbookDefinition> input) {
            String cookbookName = input.getKey();
            CookbookDefinition def = input.getValue();
            return CookbookDefinition.builder() //
                   .from(def) //              
                   .name(cookbookName) //
                   .build();
         }
      }));
   }
}