content: /*
   * 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 com.aliyuncs.fc.http;
  
  import com.aliyuncs.fc.constants.Const;
  import com.aliyuncs.fc.exceptions.ClientException;
  import com.google.common.base.Preconditions;
  import com.google.common.base.Strings;
  
  import java.io.IOException;
  import java.net.HttpURLConnection;
  import java.net.URL;
  import java.util.HashMap;
  import java.util.Map;
  
  
  public abstract class HttpRequest {
  
      protected Map<String, String> headers;
  
      public HttpRequest() {
          headers = new HashMap<String, String>();
      }
  
      public abstract String getPath();
  
      public abstract void validate() throws ClientException;
  
      public HttpURLConnection getHttpConnection(String urls, String method)
          throws IOException {
          String strUrl = urls;
          if (null == strUrl || null == method) {
              return null;
          }
          URL url = new URL(strUrl);
  
          System.setProperty("sun.net.http.allowRestrictedHeaders", "true");
          HttpURLConnection httpConn = (HttpURLConnection) url.openConnection();
          httpConn.setRequestMethod(method);
          httpConn.setDoOutput(true);
          httpConn.setDoInput(true);
          httpConn.setUseCaches(false);
          httpConn.setConnectTimeout(Const.CONNECT_TIMEOUT);
          httpConn.setReadTimeout(Const.READ_TIMEOUT);
  
          for (Map.Entry<String, String> entry : headers.entrySet()) {
              httpConn.setRequestProperty(entry.getKey(), entry.getValue());
          }
  
          return httpConn;
      }
  
      public void setHeader(String key, String value) {
          Preconditions.checkArgument(!Strings.isNullOrEmpty(key), "Header key cannot be blank");
          Preconditions.checkArgument(!Strings.isNullOrEmpty(value), "Header value cannot be blank");
          headers.put(key, value);
      }
  
      public byte[] getPayload() {
          return null;
      }
  
      public Map<String, String> getQueryParams() {
          return null;
      }
  
      public Map<String, String> getHeaders() {
          return headers;
      }
  }
  