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 org.apache.activemq.blob;
  
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  import java.net.HttpURLConnection;
  import java.net.URL;
  
  import jakarta.jms.JMSException;
  
  import org.apache.activemq.command.ActiveMQBlobMessage;
  
  /**
   * A default implementation of {@link BlobUploadStrategy} which uses the URL
   * class to upload files or streams to a remote URL
   */
  public class DefaultBlobUploadStrategy extends DefaultStrategy implements BlobUploadStrategy {
  
      public DefaultBlobUploadStrategy(BlobTransferPolicy transferPolicy) {
          super(transferPolicy);
      }
  
      public URL uploadFile(ActiveMQBlobMessage message, File file) throws JMSException, IOException {
          try(FileInputStream fis = new FileInputStream(file)) {
              return uploadStream(message, fis);
          }
      }
  
      public URL uploadStream(ActiveMQBlobMessage message, InputStream fis) throws JMSException, IOException {
          URL url = createMessageURL(message);
  
          HttpURLConnection connection = (HttpURLConnection)url.openConnection();
          connection.setRequestMethod("PUT");
          connection.setDoOutput(true);
  
          // use chunked mode or otherwise URLConnection loads everything into
          // memory
          // (chunked mode not supported before JRE 1.5)
          connection.setChunkedStreamingMode(transferPolicy.getBufferSize());
  
          try(OutputStream os = connection.getOutputStream()) {
              byte[] buf = new byte[transferPolicy.getBufferSize()];
              for (int c = fis.read(buf); c != -1; c = fis.read(buf)) {
                  os.write(buf, 0, c);
                  os.flush();
              }
          } catch (IOException error) {
              throw new IOException("PUT failed to: " + url, error);
          }
  
          if (!isSuccessfulCode(connection.getResponseCode())) {
              throw new IOException("PUT to " + url + " was not successful: " + connection.getResponseCode() + " "
                                    + connection.getResponseMessage());
          }
  
          return url;
      }
  
  
  }
  