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.aliyun.oss.event;
  
  import static com.aliyun.oss.event.ProgressEventType.REQUEST_CONTENT_LENGTH_EVENT;
  import static com.aliyun.oss.event.ProgressEventType.REQUEST_BYTE_TRANSFER_EVENT;
  import static com.aliyun.oss.event.ProgressEventType.RESPONSE_CONTENT_LENGTH_EVENT;
  import static com.aliyun.oss.event.ProgressEventType.RESPONSE_BYTE_TRANSFER_EVENT;
  
  public class ProgressPublisher {
  
      public static void publishProgress(final ProgressListener listener, final ProgressEventType eventType) {
          if (listener == ProgressListener.NOOP || listener == null || eventType == null) {
              return;
          }
          listener.progressChanged(new ProgressEvent(eventType));
      }
  
      public static void publishSelectProgress(final ProgressListener listener, final ProgressEventType eventType,
                                               final long scannedBytes) {
          if (listener == ProgressListener.NOOP || listener == null || eventType == null) {
              return;
          }
          listener.progressChanged(new ProgressEvent(eventType, scannedBytes));
      }
  
      public static void publishRequestContentLength(final ProgressListener listener, final long bytes) {
          publishByteCountEvent(listener, REQUEST_CONTENT_LENGTH_EVENT, bytes);
      }
  
      public static void publishRequestBytesTransferred(final ProgressListener listener, final long bytes) {
          publishByteCountEvent(listener, REQUEST_BYTE_TRANSFER_EVENT, bytes);
      }
  
      public static void publishResponseContentLength(final ProgressListener listener, final long bytes) {
          publishByteCountEvent(listener, RESPONSE_CONTENT_LENGTH_EVENT, bytes);
      }
  
      public static void publishResponseBytesTransferred(final ProgressListener listener, final long bytes) {
          publishByteCountEvent(listener, RESPONSE_BYTE_TRANSFER_EVENT, bytes);
      }
  
      private static void publishByteCountEvent(final ProgressListener listener, final ProgressEventType eventType,
              final long bytes) {
          if (listener == ProgressListener.NOOP || listener == null || bytes <= 0) {
              return;
          }
          listener.progressChanged(new ProgressEvent(eventType, bytes));
      }
  }
  