/*
* Copyright 2014-2017 Real Logic Ltd.
*
* Licensed 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 io.aeron.logbuffer;
import org.junit.Before;
import org.junit.Test;
import org.mockito.InOrder;
import org.agrona.BitUtil;
import org.agrona.concurrent.UnsafeBuffer;
import java.nio.ByteBuffer;
import static io.aeron.protocol.DataHeaderFlyweight.HEADER_LENGTH;
import static java.lang.Integer.valueOf;
import static java.nio.ByteOrder.LITTLE_ENDIAN;
import static org.mockito.Mockito.*;
import static io.aeron.logbuffer.FrameDescriptor.*;
public class TermRebuilderTest
{
private static final int TERM_BUFFER_CAPACITY = LogBufferDescriptor.TERM_MIN_LENGTH;
private final UnsafeBuffer termBuffer = mock(UnsafeBuffer.class);
@Before
public void setUp()
{
when(valueOf(termBuffer.capacity())).thenReturn(valueOf(TERM_BUFFER_CAPACITY));
}
@Test
public void shouldInsertIntoEmptyBuffer()
{
final UnsafeBuffer packet = new UnsafeBuffer(ByteBuffer.allocateDirect(256));
final int termOffset = 0;
final int srcOffset = 0;
final int length = 256;
packet.putInt(srcOffset, length, LITTLE_ENDIAN);
TermRebuilder.insert(termBuffer, termOffset, packet, length);
final InOrder inOrder = inOrder(termBuffer);
inOrder.verify(termBuffer).putBytes(
termOffset + HEADER_LENGTH, packet, srcOffset + HEADER_LENGTH, length - HEADER_LENGTH);
inOrder.verify(termBuffer).putLong(termOffset + 24, packet.getLong(24));
inOrder.verify(termBuffer).putLong(termOffset + 16, packet.getLong(16));
inOrder.verify(termBuffer).putLong(termOffset + 8, packet.getLong(8));
inOrder.verify(termBuffer).putLongOrdered(termOffset, packet.getLong(0));
}
@Test
public void shouldInsertLastFrameIntoBuffer()
{
final int frameLength = BitUtil.align(256, FRAME_ALIGNMENT);
final int srcOffset = 0;
final int tail = TERM_BUFFER_CAPACITY - frameLength;
final int termOffset = tail;
final UnsafeBuffer packet = new UnsafeBuffer(ByteBuffer.allocateDirect(frameLength));
packet.putShort(typeOffset(srcOffset), (short)PADDING_FRAME_TYPE, LITTLE_ENDIAN);
packet.putInt(srcOffset, frameLength, LITTLE_ENDIAN);
TermRebuilder.insert(termBuffer, termOffset, packet, frameLength);
verify(termBuffer).putBytes(
tail + HEADER_LENGTH, packet, srcOffset + HEADER_LENGTH, frameLength - HEADER_LENGTH);
}
@Test
public void shouldFillSingleGap()
{
final int frameLength = 50;
final int alignedFrameLength = BitUtil.align(frameLength, FRAME_ALIGNMENT);
final int srcOffset = 0;
final int tail = alignedFrameLength;
final int termOffset = tail;
final UnsafeBuffer packet = new UnsafeBuffer(ByteBuffer.allocateDirect(alignedFrameLength));
TermRebuilder.insert(termBuffer, termOffset, packet, alignedFrameLength);
verify(termBuffer).putBytes(
tail + HEADER_LENGTH, packet, srcOffset + HEADER_LENGTH, alignedFrameLength - HEADER_LENGTH);
}
@Test
public void shouldFillAfterAGap()
{
final int frameLength = 50;
final int alignedFrameLength = BitUtil.align(frameLength, FRAME_ALIGNMENT);
final int srcOffset = 0;
final UnsafeBuffer packet = new UnsafeBuffer(ByteBuffer.allocateDirect(alignedFrameLength));
final int termOffset = alignedFrameLength * 2;
TermRebuilder.insert(termBuffer, termOffset, packet, alignedFrameLength);
verify(termBuffer).putBytes(
(alignedFrameLength * 2) + HEADER_LENGTH,
packet,
srcOffset + HEADER_LENGTH,
alignedFrameLength - HEADER_LENGTH);
}
@Test
public void shouldFillGapButNotMoveTailOrHwm()
{
final int frameLength = 50;
final int alignedFrameLength = BitUtil.align(frameLength, FRAME_ALIGNMENT);
final int srcOffset = 0;
final UnsafeBuffer packet = new UnsafeBuffer(ByteBuffer.allocateDirect(alignedFrameLength));
final int termOffset = alignedFrameLength * 2;
TermRebuilder.insert(termBuffer, termOffset, packet, alignedFrameLength);
verify(termBuffer).putBytes(
(alignedFrameLength * 2) + HEADER_LENGTH,
packet,
srcOffset + HEADER_LENGTH,
alignedFrameLength - HEADER_LENGTH);
}
}