@Test public void testTruncate() throws Exception { final long term = 1; final long start = 1000; LogSegment segment = LogSegment.newOpenSegment(null, start); for (int i = 0; i < 100; i++) { LogEntryProto entry = ServerProtoUtils.toLogEntryProto( new SimpleOperation("m" + i).getLogEntryContent(), term, i + start); segment.appendToOpenSegment(entry); } // truncate an open segment (remove 1080~1099) long newSize = segment.getLogRecord(start + 80).getOffset(); segment.truncate(start + 80); Assert.assertEquals(80, segment.numOfEntries()); checkLogSegment(segment, start, start + 79, false, newSize, term); // truncate a closed segment (remove 1050~1079) newSize = segment.getLogRecord(start + 50).getOffset(); segment.truncate(start + 50); Assert.assertEquals(50, segment.numOfEntries()); checkLogSegment(segment, start, start + 49, false, newSize, term); // truncate all the remaining entries segment.truncate(start); Assert.assertEquals(0, segment.numOfEntries()); checkLogSegment(segment, start, start - 1, false, SegmentedRaftLogFormat.getHeaderLength(), term); }
@Test public void testTruncate() throws Exception { final long term = 1; final long start = 1000; LogSegment segment = LogSegment.newOpenSegment(null, start); for (int i = 0; i < 100; i++) { LogEntryProto entry = ProtoUtils.toLogEntryProto( new SimpleOperation("m" + i).getLogEntryContent(), term, i + start, clientId, callId); segment.appendToOpenSegment(entry); } // truncate an open segment (remove 1080~1099) long newSize = segment.getLogRecord(start + 80).getOffset(); segment.truncate(start + 80); Assert.assertEquals(80, segment.numOfEntries()); checkLogSegment(segment, start, start + 79, false, newSize, term); // truncate a closed segment (remove 1050~1079) newSize = segment.getLogRecord(start + 50).getOffset(); segment.truncate(start + 50); Assert.assertEquals(50, segment.numOfEntries()); checkLogSegment(segment, start, start + 49, false, newSize, term); // truncate all the remaining entries segment.truncate(start); Assert.assertEquals(0, segment.numOfEntries()); checkLogSegment(segment, start, start - 1, false, SegmentedRaftLog.HEADER_BYTES.length, term); }
static void checkLogSegment(LogSegment segment, long start, long end, boolean isOpen, long totalSize, long term) throws Exception { Assert.assertEquals(start, segment.getStartIndex()); Assert.assertEquals(end, segment.getEndIndex()); Assert.assertEquals(isOpen, segment.isOpen()); Assert.assertEquals(totalSize, segment.getTotalSize()); long offset = SegmentedRaftLogFormat.getHeaderLength(); for (long i = start; i <= end; i++) { LogSegment.LogRecord record = segment.getLogRecord(i); LogRecordWithEntry lre = segment.getEntryWithoutLoading(i); Assert.assertEquals(i, lre.getRecord().getTermIndex().getIndex()); Assert.assertEquals(term, lre.getRecord().getTermIndex().getTerm()); Assert.assertEquals(offset, record.getOffset()); LogEntryProto entry = lre.hasEntry() ? lre.getEntry() : segment.loadCache(lre.getRecord()); offset += getEntrySize(entry); } }
private void checkLogSegment(LogSegment segment, long start, long end, boolean isOpen, long totalSize, long term) throws Exception { Assert.assertEquals(start, segment.getStartIndex()); Assert.assertEquals(end, segment.getEndIndex()); Assert.assertEquals(isOpen, segment.isOpen()); Assert.assertEquals(totalSize, segment.getTotalSize()); long offset = SegmentedRaftLog.HEADER_BYTES.length; for (long i = start; i <= end; i++) { LogSegment.LogRecord record = segment.getLogRecord(i); LogRecordWithEntry lre = segment.getEntryWithoutLoading(i); Assert.assertEquals(i, lre.getRecord().getTermIndex().getIndex()); Assert.assertEquals(term, lre.getRecord().getTermIndex().getTerm()); Assert.assertEquals(offset, record.getOffset()); LogEntryProto entry = lre.hasEntry() ? lre.getEntry() : segment.loadCache(lre.getRecord()); offset += getEntrySize(entry); } }