services/console-proxy-rdp/rdpconsole/src/main/java/streamer/MockSink.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 streamer;

import java.util.Arrays;

/**
 * Compare incoming packets with expected packets.
 */
public class MockSink extends BaseElement {

  protected ByteBuffer bufs[] = null;

  public MockSink(String id) {
    super(id);
  }

  public MockSink(String id, ByteBuffer bufs[]) {
    super(id);
    this.bufs = bufs;
  }

  @Override
  public void handleData(ByteBuffer buf, Link link) {
    if (verbose)
      System.out.println("[" + this + "] INFO: Received buf #" + (packetNumber) + " " + buf + ".");

    if (buf == null)
      return;

    if (packetNumber >= bufs.length)
      throw new AssertionError("[" + this + "] Incoming buffer #" + packetNumber + " is not expected. Number of expected buffers: " + bufs.length
          + ", unexpected buffer: " + buf + ".");

    // Compare incoming buffer with expected buffer
    if (!Arrays.equals(bufs[packetNumber].toByteArray(), buf.toByteArray()))
      throw new AssertionError("[" + this + "] Incoming buffer #" + packetNumber + " is not equal to expected buffer.\n  Actual bufer: " + buf
          + ",\n  expected buffer: " + bufs[packetNumber] + ".");

    if (verbose)
      System.out.println("[" + this + "] INFO: buffers are equal.");

    // Use packetNumber variable to count incoming packets
    packetNumber++;

    buf.unref();
  }

  @Override
  protected void onClose() {
    super.onClose();

    if (packetNumber != bufs.length)
      throw new AssertionError("[" + this + "] Number of expected buffers: " + bufs.length + ", number of actual buffers: " + packetNumber + ".");
  }

  @Override
  public String toString() {
    return "MockSink(" + id + ")";
  }

  /**
   * Example.
   */
  public static void main(String args[]) {

    Element mockSource = new MockSource("source") {
      {
        this.bufs = new ByteBuffer[] { new ByteBuffer(new byte[] { 1, 1, 2, 3, 4, 5 }), new ByteBuffer(new byte[] { 2, 1, 2, 3, 4 }),
            new ByteBuffer(new byte[] { 3, 1, 2, 3 }), new ByteBuffer(new byte[] { 4, 1, 2 }), new ByteBuffer(new byte[] { 5, 1 }) };
        this.verbose = true;
        this.delay = 100;
        this.numBuffers = this.bufs.length;
      }
    };

    Element mockSink = new MockSink("sink") {
      {
        this.bufs = new ByteBuffer[] { new ByteBuffer(new byte[] { 1, 1, 2, 3, 4, 5 }), new ByteBuffer(new byte[] { 2, 1, 2, 3, 4 }),
            new ByteBuffer(new byte[] { 3, 1, 2, 3 }), new ByteBuffer(new byte[] { 4, 1, 2 }), new ByteBuffer(new byte[] { 5, 1 }) };
        this.verbose = true;
      }
    };

    Link link = new SyncLink() {
      {
        this.verbose = true;
      }
    };

    mockSource.setLink(STDOUT, link, Direction.OUT);
    mockSink.setLink(STDIN, link, Direction.IN);

    link.run();
  }

}