Examples with DbmsLogEntryWriterFactory org.neo4j.kernel.database.DbmsLogEntryWriterFactory used on opensource projects

Example 6 with DbmsLogEntryWriterFactory

use of org.neo4j.kernel.database.DbmsLogEntryWriterFactory in project neo4j by neo4j.

the class BatchingTransactionAppenderTest method shouldAppendCommittedTransactions.

@Test
void shouldAppendCommittedTransactions() throws Exception {
    // GIVEN
    when(logFile.getTransactionLogWriter()).thenReturn(new TransactionLogWriter(channel, new DbmsLogEntryWriterFactory(() -> LATEST)));
    long nextTxId = 15;
    when(transactionIdStore.nextCommittingTransactionId()).thenReturn(nextTxId);
    when(transactionIdStore.getLastCommittedTransaction()).thenReturn(new TransactionId(nextTxId, BASE_TX_CHECKSUM, BASE_TX_COMMIT_TIMESTAMP));
    TransactionAppender appender = life.add(new BatchingTransactionAppender(logFiles, NO_ROTATION, positionCache, transactionIdStore, databaseHealth));
    // WHEN
    final byte[] additionalHeader = new byte[] { 1, 2, 5 };
    final long timeStarted = 12345;
    long latestCommittedTxWhenStarted = nextTxId - 5;
    long timeCommitted = timeStarted + 10;
    PhysicalTransactionRepresentation transactionRepresentation = new PhysicalTransactionRepresentation(singleTestCommand());
    transactionRepresentation.setHeader(additionalHeader, timeStarted, latestCommittedTxWhenStarted, timeCommitted, -1, ANONYMOUS);
    LogEntryStart start = new LogEntryStart(0L, latestCommittedTxWhenStarted, 0, null, LogPosition.UNSPECIFIED);
    LogEntryCommit commit = new LogEntryCommit(nextTxId, 0L, BASE_TX_CHECKSUM);
    CommittedTransactionRepresentation transaction = new CommittedTransactionRepresentation(start, transactionRepresentation, commit);
    appender.append(new TransactionToApply(transactionRepresentation, transaction.getCommitEntry().getTxId(), NULL), logAppendEvent);
    // THEN
    LogEntryReader logEntryReader = logEntryReader();
    try (PhysicalTransactionCursor reader = new PhysicalTransactionCursor(channel, logEntryReader)) {
        reader.next();
        TransactionRepresentation result = reader.get().getTransactionRepresentation();
        assertArrayEquals(additionalHeader, result.additionalHeader());
        assertEquals(timeStarted, result.getTimeStarted());
        assertEquals(timeCommitted, result.getTimeCommitted());
        assertEquals(latestCommittedTxWhenStarted, result.getLatestCommittedTxWhenStarted());
    }
}

Example 7 with DbmsLogEntryWriterFactory

use of org.neo4j.kernel.database.DbmsLogEntryWriterFactory in project neo4j by neo4j.

the class BatchingTransactionAppenderTest method shouldAppendBatchOfTransactions.

@Test
void shouldAppendBatchOfTransactions() throws Exception {
    // GIVEN
    when(logFile.getTransactionLogWriter()).thenReturn(new TransactionLogWriter(channel, new DbmsLogEntryWriterFactory(() -> LATEST)));
    TransactionAppender appender = life.add(createTransactionAppender());
    when(transactionIdStore.nextCommittingTransactionId()).thenReturn(2L, 3L, 4L);
    TransactionToApply batch = batchOf(transaction(singleTestCommand(), new byte[0], 0, 1, 0), transaction(singleTestCommand(), new byte[0], 0, 1, 0), transaction(singleTestCommand(), new byte[0], 0, 1, 0));
    // WHEN
    appender.append(batch, logAppendEvent);
    // THEN
    TransactionToApply tx = batch;
    assertEquals(2L, tx.transactionId());
    tx = tx.next();
    assertEquals(3L, tx.transactionId());
    tx = tx.next();
    assertEquals(4L, tx.transactionId());
    assertNull(tx.next());
}