test/unit/org/apache/cassandra/net/AsyncStreamingInputPlusTest.java - cassandra - Git at Google

 /*
  * 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.cassandra.net;

 import java.io.EOFException;
 import java.io.IOException;
 import java.nio.ByteBuffer;
 import java.nio.channels.WritableByteChannel;
 import java.util.concurrent.TimeUnit;

 import org.junit.After;
 import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;

 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.Unpooled;
 import io.netty.channel.embedded.EmbeddedChannel;
 import org.apache.cassandra.io.util.BufferedDataOutputStreamPlus;
 import org.apache.cassandra.net.AsyncStreamingInputPlus;
 import org.apache.cassandra.net.AsyncStreamingInputPlus.InputTimeoutException;

 import static org.junit.Assert.assertFalse;

 public class AsyncStreamingInputPlusTest
 {
     private EmbeddedChannel channel;
     private AsyncStreamingInputPlus inputPlus;
     private ByteBuf buf;

     @Before
     public void setUp()
     {
         channel = new EmbeddedChannel();
     }

     @After
     public void tearDown()
     {
         channel.close();

         if (buf != null && buf.refCnt() > 0)
             buf.release(buf.refCnt());
     }

 //    @Test
 //    public void isOpen()
 //    {
 //        Assert.assertTrue(inputPlus.isOpen());
 //        inputPlus.requestClosure();
 //        Assert.assertFalse(inputPlus.isOpen());
 //    }

     @Test
     public void append_closed()
     {
         inputPlus = new AsyncStreamingInputPlus(channel);
         inputPlus.requestClosure();
         inputPlus.close();
         buf = channel.alloc().buffer(4);
         assertFalse(inputPlus.append(buf));
     }

     @Test
     public void append_normal()
     {
         inputPlus = new AsyncStreamingInputPlus(channel);
         int size = 4;
         buf = channel.alloc().buffer(size);
         buf.writerIndex(size);
         inputPlus.append(buf);
         Assert.assertEquals(buf.readableBytes(), inputPlus.unsafeAvailable());
     }

     @Test
     public void read() throws IOException
     {
         inputPlus = new AsyncStreamingInputPlus(channel);
         // put two buffers of 8 bytes each into the queue.
         // then read an int, then a long. the latter tests offset into the inputPlus, as well as spanning across queued buffers.
         // the values of those int/long will both be '42', but spread across both queue buffers.
         ByteBuf buf = channel.alloc().buffer(8);
         buf.writeInt(42);
         buf.writerIndex(8);
         inputPlus.append(buf);
         buf = channel.alloc().buffer(8);
         buf.writeInt(42);
         buf.writerIndex(8);
         inputPlus.append(buf);
         Assert.assertEquals(16, inputPlus.unsafeAvailable());

 //        ByteBuffer out = ByteBuffer.allocate(4);
 //        int readCount = inputPlus.read(out);
 //        Assert.assertEquals(4, readCount);
 //        out.flip();
 //        Assert.assertEquals(42, out.getInt());
 //        Assert.assertEquals(12, inputPlus.unsafeAvailable());

 //        out = ByteBuffer.allocate(8);
 //        readCount = inputPlus.read(out);
 //        Assert.assertEquals(8, readCount);
 //        out.flip();
 //        Assert.assertEquals(42, out.getLong());
 //        Assert.assertEquals(4, inputPlus.unsafeAvailable());
     }

 //    @Test (expected = EOFException.class)
 //    public void read_closed() throws IOException
 //    {
 //        inputPlus.requestClosure();
 //        ByteBuffer buf = ByteBuffer.allocate(1);
 //        inputPlus.read(buf);
 //    }

     @Test
     public void available_closed()
     {
         inputPlus = new AsyncStreamingInputPlus(channel);
         inputPlus.requestClosure();
         inputPlus.unsafeAvailable();
     }

     @Test
     public void available_HappyPath()
     {
         inputPlus = new AsyncStreamingInputPlus(channel);
         int size = 4;
         buf = channel.alloc().heapBuffer(size);
         buf.writerIndex(size);
         inputPlus.append(buf);
         Assert.assertEquals(size, inputPlus.unsafeAvailable());
     }

     @Test
     public void available_ClosedButWithBytes()
     {
         inputPlus = new AsyncStreamingInputPlus(channel);
         int size = 4;
         buf = channel.alloc().heapBuffer(size);
         buf.writerIndex(size);
         inputPlus.append(buf);
         inputPlus.requestClosure();
         Assert.assertEquals(size, inputPlus.unsafeAvailable());
     }

     @Test
     public void consumeUntil_SingleBuffer_Partial_HappyPath() throws IOException
     {
         consumeUntilTestCycle(1, 8, 0, 4);
     }

     @Test
     public void consumeUntil_SingleBuffer_AllBytes_HappyPath() throws IOException
     {
         consumeUntilTestCycle(1, 8, 0, 8);
     }

     @Test
     public void consumeUntil_MultipleBufferr_Partial_HappyPath() throws IOException
     {
         consumeUntilTestCycle(2, 8, 0, 13);
     }

     @Test
     public void consumeUntil_MultipleBuffer_AllBytes_HappyPath() throws IOException
     {
         consumeUntilTestCycle(2, 8, 0, 16);
     }

     @Test(expected = EOFException.class)
     public void consumeUntil_SingleBuffer_Fails() throws IOException
     {
         consumeUntilTestCycle(1, 8, 0, 9);
     }

     @Test(expected = EOFException.class)
     public void consumeUntil_MultipleBuffer_Fails() throws IOException
     {
         consumeUntilTestCycle(2, 8, 0, 17);
     }

     private void consumeUntilTestCycle(int nBuffs, int buffSize, int startOffset, int len) throws IOException
     {
         inputPlus = new AsyncStreamingInputPlus(channel);

         byte[] expectedBytes = new byte[len];
         int count = 0;
         for (int j=0; j < nBuffs; j++)
         {
             ByteBuf buf = channel.alloc().buffer(buffSize);
             for (int i = 0; i < buf.capacity(); i++)
             {
                 buf.writeByte(j);
                 if (count >= startOffset && (count - startOffset) < len)
                     expectedBytes[count - startOffset] = (byte)j;
                 count++;
             }

             inputPlus.append(buf);
         }
         inputPlus.requestClosure();

         TestableWritableByteChannel wbc = new TestableWritableByteChannel(len);

         inputPlus.skipBytesFully(startOffset);
         BufferedDataOutputStreamPlus writer = new BufferedDataOutputStreamPlus(wbc);
         inputPlus.consume(buffer -> { writer.write(buffer); return buffer.remaining(); }, len);
         writer.close();

         Assert.assertEquals(String.format("Test with %d buffers starting at %d consuming %d bytes", nBuffs, startOffset, len),
                             len, wbc.writtenBytes.readableBytes());

         Assert.assertArrayEquals(expectedBytes, wbc.writtenBytes.array());
     }

     private static class TestableWritableByteChannel implements WritableByteChannel
     {
         private boolean isOpen = true;
         public ByteBuf writtenBytes;

         public TestableWritableByteChannel(int initialCapacity)
         {
              writtenBytes = Unpooled.buffer(initialCapacity);
         }

         public int write(ByteBuffer src)
         {
             int size = src.remaining();
             writtenBytes.writeBytes(src);
             return size;
         }

         public boolean isOpen()
         {
             return isOpen;
         }

         public void close()
         {
             isOpen = false;
         }
     }

     @Test
     public void rebufferTimeout() throws IOException
     {
         long timeoutMillis = 1000;
         inputPlus = new AsyncStreamingInputPlus(channel, timeoutMillis, TimeUnit.MILLISECONDS);

         long startNanos = System.nanoTime();
         try
         {
             inputPlus.readInt();
             Assert.fail("should not have been able to read from the queue");
         }
         catch (InputTimeoutException e)
         {
             // this is the success case, and is expected. any other exception is a failure.
         }

         long durationNanos = System.nanoTime() - startNanos;
         Assert.assertTrue(TimeUnit.MILLISECONDS.toNanos(timeoutMillis) <= durationNanos);
     }
 }
	/*
	* 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.cassandra.net;

	import java.io.EOFException;
	import java.io.IOException;
	import java.nio.ByteBuffer;
	import java.nio.channels.WritableByteChannel;
	import java.util.concurrent.TimeUnit;

	import org.junit.After;
	import org.junit.Assert;
	import org.junit.Before;
	import org.junit.Test;

	import io.netty.buffer.ByteBuf;
	import io.netty.buffer.Unpooled;
	import io.netty.channel.embedded.EmbeddedChannel;
	import org.apache.cassandra.io.util.BufferedDataOutputStreamPlus;
	import org.apache.cassandra.net.AsyncStreamingInputPlus;
	import org.apache.cassandra.net.AsyncStreamingInputPlus.InputTimeoutException;

	import static org.junit.Assert.assertFalse;

	public class AsyncStreamingInputPlusTest
	{
	private EmbeddedChannel channel;
	private AsyncStreamingInputPlus inputPlus;
	private ByteBuf buf;

	@Before
	public void setUp()
	{
	channel = new EmbeddedChannel();
	}

	@After
	public void tearDown()
	{
	channel.close();

	if (buf != null && buf.refCnt() > 0)
	buf.release(buf.refCnt());
	}

	// @Test
	// public void isOpen()
	// {
	// Assert.assertTrue(inputPlus.isOpen());
	// inputPlus.requestClosure();
	// Assert.assertFalse(inputPlus.isOpen());
	// }

	@Test
	public void append_closed()
	{
	inputPlus = new AsyncStreamingInputPlus(channel);
	inputPlus.requestClosure();
	inputPlus.close();
	buf = channel.alloc().buffer(4);
	assertFalse(inputPlus.append(buf));
	}

	@Test
	public void append_normal()
	{
	inputPlus = new AsyncStreamingInputPlus(channel);
	int size = 4;
	buf = channel.alloc().buffer(size);
	buf.writerIndex(size);
	inputPlus.append(buf);
	Assert.assertEquals(buf.readableBytes(), inputPlus.unsafeAvailable());
	}

	@Test
	public void read() throws IOException
	{
	inputPlus = new AsyncStreamingInputPlus(channel);
	// put two buffers of 8 bytes each into the queue.
	// then read an int, then a long. the latter tests offset into the inputPlus, as well as spanning across queued buffers.
	// the values of those int/long will both be '42', but spread across both queue buffers.
	ByteBuf buf = channel.alloc().buffer(8);
	buf.writeInt(42);
	buf.writerIndex(8);
	inputPlus.append(buf);
	buf = channel.alloc().buffer(8);
	buf.writeInt(42);
	buf.writerIndex(8);
	inputPlus.append(buf);
	Assert.assertEquals(16, inputPlus.unsafeAvailable());

	// ByteBuffer out = ByteBuffer.allocate(4);
	// int readCount = inputPlus.read(out);
	// Assert.assertEquals(4, readCount);
	// out.flip();
	// Assert.assertEquals(42, out.getInt());
	// Assert.assertEquals(12, inputPlus.unsafeAvailable());

	// out = ByteBuffer.allocate(8);
	// readCount = inputPlus.read(out);
	// Assert.assertEquals(8, readCount);
	// out.flip();
	// Assert.assertEquals(42, out.getLong());
	// Assert.assertEquals(4, inputPlus.unsafeAvailable());
	}

	// @Test (expected = EOFException.class)
	// public void read_closed() throws IOException
	// {
	// inputPlus.requestClosure();
	// ByteBuffer buf = ByteBuffer.allocate(1);
	// inputPlus.read(buf);
	// }

	@Test
	public void available_closed()
	{
	inputPlus = new AsyncStreamingInputPlus(channel);
	inputPlus.requestClosure();
	inputPlus.unsafeAvailable();
	}

	@Test
	public void available_HappyPath()
	{
	inputPlus = new AsyncStreamingInputPlus(channel);
	int size = 4;
	buf = channel.alloc().heapBuffer(size);
	buf.writerIndex(size);
	inputPlus.append(buf);
	Assert.assertEquals(size, inputPlus.unsafeAvailable());
	}

	@Test
	public void available_ClosedButWithBytes()
	{
	inputPlus = new AsyncStreamingInputPlus(channel);
	int size = 4;
	buf = channel.alloc().heapBuffer(size);
	buf.writerIndex(size);
	inputPlus.append(buf);
	inputPlus.requestClosure();
	Assert.assertEquals(size, inputPlus.unsafeAvailable());
	}

	@Test
	public void consumeUntil_SingleBuffer_Partial_HappyPath() throws IOException
	{
	consumeUntilTestCycle(1, 8, 0, 4);
	}

	@Test
	public void consumeUntil_SingleBuffer_AllBytes_HappyPath() throws IOException
	{
	consumeUntilTestCycle(1, 8, 0, 8);
	}

	@Test
	public void consumeUntil_MultipleBufferr_Partial_HappyPath() throws IOException
	{
	consumeUntilTestCycle(2, 8, 0, 13);
	}

	@Test
	public void consumeUntil_MultipleBuffer_AllBytes_HappyPath() throws IOException
	{
	consumeUntilTestCycle(2, 8, 0, 16);
	}

	@Test(expected = EOFException.class)
	public void consumeUntil_SingleBuffer_Fails() throws IOException
	{
	consumeUntilTestCycle(1, 8, 0, 9);
	}

	@Test(expected = EOFException.class)
	public void consumeUntil_MultipleBuffer_Fails() throws IOException
	{
	consumeUntilTestCycle(2, 8, 0, 17);
	}

	private void consumeUntilTestCycle(int nBuffs, int buffSize, int startOffset, int len) throws IOException
	{
	inputPlus = new AsyncStreamingInputPlus(channel);

	byte[] expectedBytes = new byte[len];
	int count = 0;
	for (int j=0; j < nBuffs; j++)
	{
	ByteBuf buf = channel.alloc().buffer(buffSize);
	for (int i = 0; i < buf.capacity(); i++)
	{
	buf.writeByte(j);
	if (count >= startOffset && (count - startOffset) < len)
	expectedBytes[count - startOffset] = (byte)j;
	count++;
	}

	inputPlus.append(buf);
	}
	inputPlus.requestClosure();

	TestableWritableByteChannel wbc = new TestableWritableByteChannel(len);

	inputPlus.skipBytesFully(startOffset);
	BufferedDataOutputStreamPlus writer = new BufferedDataOutputStreamPlus(wbc);
	inputPlus.consume(buffer -> { writer.write(buffer); return buffer.remaining(); }, len);
	writer.close();

	Assert.assertEquals(String.format("Test with %d buffers starting at %d consuming %d bytes", nBuffs, startOffset, len),
	len, wbc.writtenBytes.readableBytes());

	Assert.assertArrayEquals(expectedBytes, wbc.writtenBytes.array());
	}

	private static class TestableWritableByteChannel implements WritableByteChannel
	{
	private boolean isOpen = true;
	public ByteBuf writtenBytes;

	public TestableWritableByteChannel(int initialCapacity)
	{
	writtenBytes = Unpooled.buffer(initialCapacity);
	}

	public int write(ByteBuffer src)
	{
	int size = src.remaining();
	writtenBytes.writeBytes(src);
	return size;
	}

	public boolean isOpen()
	{
	return isOpen;
	}

	public void close()
	{
	isOpen = false;
	}
	}

	@Test
	public void rebufferTimeout() throws IOException
	{
	long timeoutMillis = 1000;
	inputPlus = new AsyncStreamingInputPlus(channel, timeoutMillis, TimeUnit.MILLISECONDS);

	long startNanos = System.nanoTime();
	try
	{
	inputPlus.readInt();
	Assert.fail("should not have been able to read from the queue");
	}
	catch (InputTimeoutException e)
	{
	// this is the success case, and is expected. any other exception is a failure.
	}

	long durationNanos = System.nanoTime() - startNanos;
	Assert.assertTrue(TimeUnit.MILLISECONDS.toNanos(timeoutMillis) <= durationNanos);
	}
	}