Examples with ChecksumException org.apache.ratis.protocol.exceptions.ChecksumException used on opensource projects

Example 1 with ChecksumException

use of org.apache.ratis.protocol.exceptions.ChecksumException in project incubator-ratis by apache.

the class TestRaftLogReadWrite method testReadWithEntryCorruption.

/**
 * Test the log reader to make sure it can detect the checksum mismatch.
 */
@Test
public void testReadWithEntryCorruption() throws IOException {
    RaftStorage storage = RaftStorageTestUtils.newRaftStorage(storageDir);
    final File openSegment = LogSegmentStartEnd.valueOf(0).getFile(storage);
    try (SegmentedRaftLogOutputStream out = new SegmentedRaftLogOutputStream(openSegment, false, segmentMaxSize, preallocatedSize, ByteBuffer.allocateDirect(bufferSize))) {
        for (int i = 0; i < 100; i++) {
            LogEntryProto entry = LogProtoUtils.toLogEntryProto(new SimpleOperation("m" + i).getLogEntryContent(), 0, i);
            out.write(entry);
        }
    } finally {
        storage.close();
    }
    // corrupt the log file
    try (RandomAccessFile raf = new RandomAccessFile(openSegment.getCanonicalFile(), "rw")) {
        raf.seek(100);
        int correctValue = raf.read();
        raf.seek(100);
        raf.write(correctValue + 1);
    }
    try {
        readLog(openSegment, 0, RaftLog.INVALID_LOG_INDEX, true);
        Assert.fail("The read of corrupted log file should fail");
    } catch (ChecksumException e) {
        LOG.info("Caught ChecksumException as expected", e);
    }
}