// 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.debug;
import java.util.Arrays;
import java.util.Set;
import streamer.BaseElement;
import streamer.ByteBuffer;
import streamer.Direction;
import streamer.Element;
import streamer.Link;
import streamer.SyncLink;
/**
* Compare incoming packets with expected packets.
*/
public class MockSink extends BaseElement {
protected ByteBuffer bufs[];
protected Dumper dumper;
public MockSink(String id) {
super(id);
}
public MockSink(String id, ByteBuffer bufs[]) {
super(id);
this.bufs = bufs;
}
public MockSink(String id, ByteBuffer bufs[], Dumper dumper) {
super(id);
this.bufs = bufs;
this.dumper = dumper;
}
@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
ByteBuffer expectedBuf = bufs[packetNumber];
if (!Arrays.equals(expectedBuf.toByteArray(), buf.toByteArray())) {
dump(buf, expectedBuf);
throw new AssertionError("[" + this + "] Incoming buffer #" + packetNumber + " is not equal to expected buffer.\n Actual bufer: " + buf
+ ",\n expected buffer: " + expectedBuf + ".");
}
// If expected buffer has metadata, then compare it too
Set<String> metadataKeys = expectedBuf.getMetadataKeys();
if (metadataKeys.size() > 0) {
for (String key : metadataKeys) {
Object expectedValue = expectedBuf.getMetadata(key);
Object actualValue = buf.getMetadata(key);
if (actualValue == null)
throw new AssertionError("[" + this + "] Incoming buffer #" + packetNumber + " is not equal to expected buffer in metadata for key \"" + key
+ "\".\n Actual metadata value: " + actualValue + ",\n expected value: \"" + expectedValue + "\".");
if (!expectedValue.equals(actualValue))
throw new AssertionError("[" + this + "] Incoming buffer #" + packetNumber + " is not equal to expected buffer in metadata for key \"" + key
+ "\".\n Actual metadata value: \"" + actualValue + "\",\n expected value: \"" + expectedValue + "\".");
}
}
if (verbose)
System.out.println("[" + this + "] INFO: buffers are equal.");
// Use packetNumber variable to count incoming packets
packetNumber++;
buf.unref();
}
private void dump(ByteBuffer actualData, ByteBuffer expectedData) {
if (dumper != null) {
System.out.println("[" + this + "] INFO: Actual data:");
dumper.dump(actualData);
System.out.println("[" + this + "] INFO: Expected data:");
dumper.dump(expectedData);
}
}
@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") {
{
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})};
verbose = true;
delay = 100;
numBuffers = bufs.length;
}
};
Element mockSink = new MockSink("sink") {
{
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})};
verbose = true;
}
};
Link link = new SyncLink() {
{
verbose = true;
}
};
mockSource.setLink(STDOUT, link, Direction.OUT);
mockSink.setLink(STDIN, link, Direction.IN);
link.run();
}
}