org.apache.jclouds.profitbricks.rest.binder.BaseProfitBricksRequestBinder Maven / Gradle / Ivy

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jclouds components to access an implementation of ProfitBricks
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/*
 * 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.apache.jclouds.profitbricks.rest.binder;

import static com.google.common.base.Preconditions.checkNotNull;
import com.google.common.base.Strings;
import com.google.common.base.Supplier;
import com.google.inject.Inject;
import java.net.URI;
import java.util.HashMap;
import java.util.Map;
import org.jclouds.http.HttpRequest;
import org.jclouds.io.MutableContentMetadata;
import org.jclouds.io.payloads.BaseMutableContentMetadata;
import org.jclouds.json.Json;
import org.jclouds.rest.MapBinder;

public abstract class BaseProfitBricksRequestBinder implements MapBinder {

   protected final Supplier endpointSupplier;
   protected final String paramName;
   protected final Map requestBuilder;
   protected final Json jsonBinder;

   @Inject
   protected BaseProfitBricksRequestBinder(String paramName, Json jsonBinder, Supplier endpointSupplier) {
      this.paramName = checkNotNull(paramName, "Initialize 'paramName' in constructor");
      this.jsonBinder = jsonBinder;
      this.requestBuilder = new HashMap();
      this.endpointSupplier = endpointSupplier;
   }

   @SuppressWarnings("unchecked")
   @Override
   public  R bindToRequest(R request, Map postParams) {
      checkNotNull(request, "request");
      Object obj = checkNotNull(postParams.get(paramName), "Param '%s' cannot be null.", paramName);
      return createRequest(request, createPayload((T) obj));
   }

   @Override
   public  R bindToRequest(R request, Object input) {
      throw new UnsupportedOperationException("Not supported yet.");
   }

   protected abstract String createPayload(T payload);

   protected static String formatIfNotEmpty(String pattern, Object param) {
      return Strings.isNullOrEmpty(nullableToString(param)) ? "" : String.format(pattern, param);
   }

   protected static String nullableToString(Object object) {
      return object == null ? "" : object.toString();
   }

   protected  R createRequest(R fromRequest, String payload) {
      MutableContentMetadata metadata = new BaseMutableContentMetadata();
      metadata.setContentType("application/json");
      metadata.setContentLength(Long.valueOf(payload.getBytes().length));

      fromRequest.setPayload(payload);
      fromRequest.getPayload().setContentMetadata(metadata);
      return fromRequest;
   }
   
   @SuppressWarnings("unchecked")
   protected  R genRequest(String path, R fromRequest) {          
      R request = (R) fromRequest.toBuilder()
              .replacePath(endpointSupplier.get().getPath() + path)
              .build();

      return request;
   }

   protected void putIfPresent(Map list, String key, Object value) {
      if (value != null) {
         list.put(key, value);
      }
   }
}