Examples with BlockLogBuffer org.neo4j.com.BlockLogBuffer used on opensource projects

Example 1 with BlockLogBuffer

use of org.neo4j.com.BlockLogBuffer in project neo4j by neo4j.

the class TestBlockLogBuffer method canWriteLargestAtomAfterFillingBuffer.

@Test
public void canWriteLargestAtomAfterFillingBuffer() throws Exception {
    byte[] bytes = new byte[300];
    ChannelBuffer wrappedBuffer = ChannelBuffers.wrappedBuffer(bytes);
    wrappedBuffer.resetWriterIndex();
    BlockLogBuffer buffer = new BlockLogBuffer(wrappedBuffer, new Monitors().newMonitor(ByteCounterMonitor.class));
    byte[] bytesValue = new byte[255];
    bytesValue[0] = 1;
    bytesValue[254] = -1;
    long longValue = 123456;
    buffer.put(bytesValue, bytesValue.length);
    buffer.putLong(longValue);
    buffer.close();
    ByteBuffer verificationBuffer = ByteBuffer.wrap(bytes);
    assertEquals((byte) 0, verificationBuffer.get());
    byte[] actualBytes = new byte[bytesValue.length];
    verificationBuffer.get(actualBytes);
    assertThat(actualBytes, new ArrayMatches<byte[]>(bytesValue));
    assertEquals((byte) 8, verificationBuffer.get());
    assertEquals(longValue, verificationBuffer.getLong());
}

Example 2 with BlockLogBuffer

use of org.neo4j.com.BlockLogBuffer in project neo4j by neo4j.

the class TestBlockLogBuffer method canWriteReallyLargeByteArray.

@Test
public void canWriteReallyLargeByteArray() throws Exception {
    byte[] bytes = new byte[650];
    ChannelBuffer wrappedBuffer = ChannelBuffers.wrappedBuffer(bytes);
    wrappedBuffer.resetWriterIndex();
    BlockLogBuffer buffer = new BlockLogBuffer(wrappedBuffer, new Monitors().newMonitor(ByteCounterMonitor.class));
    byte[] bytesValue = new byte[600];
    bytesValue[1] = 1;
    bytesValue[99] = 2;
    bytesValue[199] = 3;
    bytesValue[299] = 4;
    bytesValue[399] = 5;
    bytesValue[499] = 6;
    bytesValue[599] = 7;
    buffer.put(bytesValue, bytesValue.length);
    buffer.close();
    byte[] actual;
    ByteBuffer verificationBuffer = ByteBuffer.wrap(bytes);
    assertEquals((byte) 0, verificationBuffer.get());
    actual = new byte[255];
    verificationBuffer.get(actual);
    assertThat(actual, new ArrayMatches<byte[]>(Arrays.copyOfRange(bytesValue, 0, 255)));
    assertEquals((byte) 0, verificationBuffer.get());
    actual = new byte[255];
    verificationBuffer.get(actual);
    assertThat(actual, new ArrayMatches<byte[]>(Arrays.copyOfRange(bytesValue, 255, 510)));
    assertEquals((byte) 90, verificationBuffer.get());
    actual = new byte[90];
    verificationBuffer.get(actual);
    assertThat(actual, new ArrayMatches<byte[]>(Arrays.copyOfRange(bytesValue, 510, 600)));
}

Example 3 with BlockLogBuffer

use of org.neo4j.com.BlockLogBuffer in project neo4j by neo4j.

the class TestBlockLogBuffer method readSmallPortions.

@Test
public void readSmallPortions() throws IOException {
    byte[] bytes = new byte[255];
    ChannelBuffer wrappedBuffer = ChannelBuffers.wrappedBuffer(bytes);
    wrappedBuffer.resetWriterIndex();
    BlockLogBuffer buffer = new BlockLogBuffer(wrappedBuffer, new Monitors().newMonitor(ByteCounterMonitor.class));
    byte byteValue = 5;
    int intValue = 1234;
    long longValue = 574853;
    buffer.put(byteValue);
    buffer.putInt(intValue);
    buffer.putLong(longValue);
    buffer.close();
    ReadableByteChannel reader = new BlockLogReader(wrappedBuffer);
    ByteBuffer verificationBuffer = ByteBuffer.wrap(new byte[1]);
    reader.read(verificationBuffer);
    verificationBuffer.flip();
    assertEquals(byteValue, verificationBuffer.get());
    verificationBuffer = ByteBuffer.wrap(new byte[4]);
    reader.read(verificationBuffer);
    verificationBuffer.flip();
    assertEquals(intValue, verificationBuffer.getInt());
    verificationBuffer = ByteBuffer.wrap(new byte[8]);
    reader.read(verificationBuffer);
    verificationBuffer.flip();
    assertEquals(longValue, verificationBuffer.getLong());
}

Example 4 with BlockLogBuffer

use of org.neo4j.com.BlockLogBuffer in project graphdb by neo4j-attic.

the class TestBlockLogBuffer method onlyOneFullBlock.

@Test
public void onlyOneFullBlock() throws Exception {
    byte[] bytes = new byte[256];
    ChannelBuffer wrappedBuffer = ChannelBuffers.wrappedBuffer(bytes);
    wrappedBuffer.resetWriterIndex();
    BlockLogBuffer buffer = new BlockLogBuffer(wrappedBuffer);
    byte[] bytesValue = new byte[255];
    bytesValue[0] = 1;
    bytesValue[254] = -1;
    buffer.put(bytesValue);
    buffer.done();
    ByteBuffer verificationBuffer = ByteBuffer.wrap(bytes);
    assertEquals((byte) 255, verificationBuffer.get());
    byte[] actualBytes = new byte[bytesValue.length];
    verificationBuffer.get(actualBytes);
    assertThat(actualBytes, new ArrayMatches<byte[]>(bytesValue));
}

Example 5 with BlockLogBuffer

use of org.neo4j.com.BlockLogBuffer in project graphdb by neo4j-attic.

the class TestBlockLogBuffer method canWriteReallyLargeByteArray.

@Test
public void canWriteReallyLargeByteArray() throws Exception {
    byte[] bytes = new byte[650];
    ChannelBuffer wrappedBuffer = ChannelBuffers.wrappedBuffer(bytes);
    wrappedBuffer.resetWriterIndex();
    BlockLogBuffer buffer = new BlockLogBuffer(wrappedBuffer);
    byte[] bytesValue = new byte[600];
    bytesValue[1] = 1;
    bytesValue[99] = 2;
    bytesValue[199] = 3;
    bytesValue[299] = 4;
    bytesValue[399] = 5;
    bytesValue[499] = 6;
    bytesValue[599] = 7;
    buffer.put(bytesValue);
    buffer.done();
    byte[] actual;
    ByteBuffer verificationBuffer = ByteBuffer.wrap(bytes);
    assertEquals((byte) 0, verificationBuffer.get());
    actual = new byte[255];
    verificationBuffer.get(actual);
    assertThat(actual, new ArrayMatches<byte[]>(Arrays.copyOfRange(bytesValue, 0, 255)));
    assertEquals((byte) 0, verificationBuffer.get());
    actual = new byte[255];
    verificationBuffer.get(actual);
    assertThat(actual, new ArrayMatches<byte[]>(Arrays.copyOfRange(bytesValue, 255, 510)));
    assertEquals((byte) 90, verificationBuffer.get());
    actual = new byte[90];
    verificationBuffer.get(actual);
    assertThat(actual, new ArrayMatches<byte[]>(Arrays.copyOfRange(bytesValue, 510, 600)));
}