Examples with LogSequenceNumber herddb.log.LogSequenceNumber used on opensource projects

Example 36 with LogSequenceNumber

use of herddb.log.LogSequenceNumber in project herddb by diennea.

the class FileDataStorageManager method writeTables.

@Override
public Collection<PostCheckpointAction> writeTables(String tableSpace, LogSequenceNumber sequenceNumber, List<Table> tables, List<Index> indexlist) throws DataStorageManagerException {
    if (sequenceNumber.isStartOfTime() && !tables.isEmpty()) {
        throw new DataStorageManagerException("impossible to write a non empty table list at start-of-time");
    }
    Path tableSpaceDirectory = getTablespaceDirectory(tableSpace);
    try {
        Files.createDirectories(tableSpaceDirectory);
        Path fileTables = getTablespaceTablesMetadataFile(tableSpace, sequenceNumber);
        Path fileIndexes = getTablespaceIndexesMetadataFile(tableSpace, sequenceNumber);
        Path parent = getParent(fileTables);
        Files.createDirectories(parent);
        LOGGER.log(Level.FINE, "writeTables for tableSpace " + tableSpace + " sequenceNumber " + sequenceNumber + " to " + fileTables.toAbsolutePath().toString());
        try (ManagedFile file = ManagedFile.open(fileTables);
            SimpleBufferedOutputStream buffer = new SimpleBufferedOutputStream(file.getOutputStream(), COPY_BUFFERS_SIZE);
            ExtendedDataOutputStream dout = new ExtendedDataOutputStream(buffer)) {
            // version
            dout.writeVLong(1);
            // flags for future implementations
            dout.writeVLong(0);
            dout.writeUTF(tableSpace);
            dout.writeZLong(sequenceNumber.ledgerId);
            dout.writeZLong(sequenceNumber.offset);
            dout.writeInt(tables.size());
            for (Table t : tables) {
                byte[] tableSerialized = t.serialize();
                dout.writeArray(tableSerialized);
            }
            dout.flush();
            file.sync();
        } catch (IOException err) {
            throw new DataStorageManagerException(err);
        }
        try (ManagedFile file = ManagedFile.open(fileIndexes);
            SimpleBufferedOutputStream buffer = new SimpleBufferedOutputStream(file.getOutputStream(), COPY_BUFFERS_SIZE);
            ExtendedDataOutputStream dout = new ExtendedDataOutputStream(buffer)) {
            // version
            dout.writeVLong(1);
            // flags for future implementations
            dout.writeVLong(0);
            dout.writeUTF(tableSpace);
            dout.writeZLong(sequenceNumber.ledgerId);
            dout.writeZLong(sequenceNumber.offset);
            if (indexlist != null) {
                dout.writeInt(indexlist.size());
                for (Index t : indexlist) {
                    byte[] indexSerialized = t.serialize();
                    dout.writeArray(indexSerialized);
                }
            } else {
                dout.writeInt(0);
            }
            dout.flush();
            file.sync();
        } catch (IOException err) {
            throw new DataStorageManagerException(err);
        }
    } catch (IOException err) {
        throw new DataStorageManagerException(err);
    }
    Collection<PostCheckpointAction> result = new ArrayList<>();
    try (DirectoryStream<Path> stream = Files.newDirectoryStream(tableSpaceDirectory)) {
        for (Path p : stream) {
            if (isTablespaceIndexesMetadataFile(p)) {
                try {
                    LogSequenceNumber logPositionInFile = readLogSequenceNumberFromIndexMetadataFile(tableSpace, p);
                    if (sequenceNumber.after(logPositionInFile)) {
                        LOGGER.log(Level.FINEST, "indexes metadata file " + p.toAbsolutePath() + ". will be deleted after checkpoint end");
                        result.add(new DeleteFileAction("indexes", "delete indexesmetadata file " + p.toAbsolutePath(), p));
                    }
                } catch (DataStorageManagerException ignore) {
                    LOGGER.log(Level.SEVERE, "Unparsable indexesmetadata file " + p.toAbsolutePath(), ignore);
                    result.add(new DeleteFileAction("indexes", "delete unparsable indexesmetadata file " + p.toAbsolutePath(), p));
                }
            } else if (isTablespaceTablesMetadataFile(p)) {
                try {
                    LogSequenceNumber logPositionInFile = readLogSequenceNumberFromTablesMetadataFile(tableSpace, p);
                    if (sequenceNumber.after(logPositionInFile)) {
                        LOGGER.log(Level.FINEST, "tables metadata file " + p.toAbsolutePath() + ". will be deleted after checkpoint end");
                        result.add(new DeleteFileAction("tables", "delete tablesmetadata file " + p.toAbsolutePath(), p));
                    }
                } catch (DataStorageManagerException ignore) {
                    LOGGER.log(Level.SEVERE, "Unparsable tablesmetadata file " + p.toAbsolutePath(), ignore);
                    result.add(new DeleteFileAction("transactions", "delete unparsable tablesmetadata file " + p.toAbsolutePath(), p));
                }
            }
        }
    } catch (IOException err) {
        LOGGER.log(Level.SEVERE, "Could not list dir " + tableSpaceDirectory, err);
    }
    return result;
}

Example 37 with LogSequenceNumber

use of herddb.log.LogSequenceNumber in project herddb by diennea.

the class RoutedClientSideConnection method messageReceived.

@Override
@SuppressFBWarnings(value = "SF_SWITCH_NO_DEFAULT")
public void messageReceived(Message message, Channel _channel) {
    switch(message.type) {
        case Message.TYPE_TABLESPACE_DUMP_DATA:
            {
                String dumpId = (String) message.parameters.get("dumpId");
                TableSpaceDumpReceiver receiver = dumpReceivers.get(dumpId);
                LOGGER.log(Level.FINE, "receiver for {0}: {1}", new Object[] { dumpId, receiver });
                if (receiver == null) {
                    if (_channel != null) {
                        _channel.sendReplyMessage(message, Message.ERROR(clientId, new Exception("no such dump receiver " + dumpId)));
                    }
                    return;
                }
                try {
                    Map<String, Object> values = (Map<String, Object>) message.parameters.get("values");
                    String command = (String) values.get("command") + "";
                    boolean sendAck = true;
                    switch(command) {
                        case "start":
                            {
                                long ledgerId = (long) values.get("ledgerid");
                                long offset = (long) values.get("offset");
                                receiver.start(new LogSequenceNumber(ledgerId, offset));
                                break;
                            }
                        case "beginTable":
                            {
                                byte[] tableDefinition = (byte[]) values.get("table");
                                Table table = Table.deserialize(tableDefinition);
                                Long estimatedSize = (Long) values.get("estimatedSize");
                                long dumpLedgerId = (Long) values.get("dumpLedgerid");
                                long dumpOffset = (Long) values.get("dumpOffset");
                                List<byte[]> indexesDef = (List<byte[]>) values.get("indexes");
                                List<Index> indexes = indexesDef.stream().map(Index::deserialize).collect(Collectors.toList());
                                Map<String, Object> stats = new HashMap<>();
                                stats.put("estimatedSize", estimatedSize);
                                stats.put("dumpLedgerId", dumpLedgerId);
                                stats.put("dumpOffset", dumpOffset);
                                receiver.beginTable(new DumpedTableMetadata(table, new LogSequenceNumber(dumpLedgerId, dumpOffset), indexes), stats);
                                break;
                            }
                        case "endTable":
                            {
                                receiver.endTable();
                                break;
                            }
                        case "finish":
                            {
                                long ledgerId = (long) values.get("ledgerid");
                                long offset = (long) values.get("offset");
                                receiver.finish(new LogSequenceNumber(ledgerId, offset));
                                sendAck = false;
                                break;
                            }
                        case "data":
                            {
                                List<KeyValue> data = (List<KeyValue>) values.get("records");
                                List<Record> records = new ArrayList<>(data.size());
                                for (KeyValue kv : data) {
                                    records.add(new Record(new Bytes(kv.key), new Bytes(kv.value)));
                                }
                                receiver.receiveTableDataChunk(records);
                                break;
                            }
                        case "txlog":
                            {
                                List<KeyValue> data = (List<KeyValue>) values.get("records");
                                List<DumpedLogEntry> records = new ArrayList<>(data.size());
                                for (KeyValue kv : data) {
                                    records.add(new DumpedLogEntry(LogSequenceNumber.deserialize(kv.key), kv.value));
                                }
                                receiver.receiveTransactionLogChunk(records);
                                break;
                            }
                        case "transactions":
                            {
                                String tableSpace = (String) values.get("tableSpace");
                                List<byte[]> data = (List<byte[]>) values.get("transactions");
                                List<Transaction> transactions = data.stream().map(array -> {
                                    return Transaction.deserialize(tableSpace, array);
                                }).collect(Collectors.toList());
                                receiver.receiveTransactionsAtDump(transactions);
                                break;
                            }
                        default:
                            throw new DataStorageManagerException("invalid dump command:" + command);
                    }
                    if (_channel != null && sendAck) {
                        _channel.sendReplyMessage(message, Message.ACK(clientId));
                    }
                } catch (DataStorageManagerException error) {
                    LOGGER.log(Level.SEVERE, "error while handling dump data", error);
                    if (_channel != null) {
                        _channel.sendReplyMessage(message, Message.ERROR(clientId, error));
                    }
                }
            }
            break;
    }
}

Example 38 with LogSequenceNumber

use of herddb.log.LogSequenceNumber in project herddb by diennea.

the class TableSpaceManager method checkpoint.

// visible for testing
public TableSpaceCheckpoint checkpoint(boolean full, boolean pin, boolean alreadLocked) throws DataStorageManagerException, LogNotAvailableException {
    if (virtual) {
        return null;
    }
    if (recoveryInProgress) {
        LOGGER.log(Level.INFO, "Checkpoint for tablespace {0} skipped. Recovery is still in progress", tableSpaceName);
        return null;
    }
    long _start = System.currentTimeMillis();
    LogSequenceNumber logSequenceNumber = null;
    LogSequenceNumber _logSequenceNumber = null;
    Map<String, LogSequenceNumber> checkpointsTableNameSequenceNumber = new HashMap<>();
    try {
        List<PostCheckpointAction> actions = new ArrayList<>();
        long lockStamp = 0;
        if (!alreadLocked) {
            lockStamp = acquireWriteLock("checkpoint");
        }
        try {
            logSequenceNumber = log.getLastSequenceNumber();
            if (logSequenceNumber.isStartOfTime()) {
                LOGGER.log(Level.INFO, "{0} checkpoint {1} at {2}. skipped (no write ever issued to log)", new Object[] { nodeId, tableSpaceName, logSequenceNumber });
                return new TableSpaceCheckpoint(logSequenceNumber, checkpointsTableNameSequenceNumber);
            }
            LOGGER.log(Level.INFO, "{0} checkpoint start {1} at {2}", new Object[] { nodeId, tableSpaceName, logSequenceNumber });
            if (actualLogSequenceNumber == null) {
                throw new DataStorageManagerException("actualLogSequenceNumber cannot be null");
            }
            // TODO: transactions checkpoint is not atomic
            Collection<Transaction> currentTransactions = new ArrayList<>(transactions.values());
            for (Transaction t : currentTransactions) {
                LogSequenceNumber txLsn = t.lastSequenceNumber;
                if (txLsn != null && txLsn.after(logSequenceNumber)) {
                    LOGGER.log(Level.SEVERE, "Found transaction {0} with LSN {1} in the future", new Object[] { t.transactionId, txLsn });
                }
            }
            actions.addAll(dataStorageManager.writeTransactionsAtCheckpoint(tableSpaceUUID, logSequenceNumber, currentTransactions));
            actions.addAll(writeTablesOnDataStorageManager(new CommitLogResult(logSequenceNumber, false, true), true));
            // we checkpoint all data to disk and save the actual log sequence number
            for (AbstractTableManager tableManager : tables.values()) {
                if (!tableManager.isSystemTable()) {
                    TableCheckpoint checkpoint = full ? tableManager.fullCheckpoint(pin) : tableManager.checkpoint(pin);
                    if (checkpoint != null) {
                        LOGGER.log(Level.INFO, "checkpoint done for table {0}.{1} (pin: {2})", new Object[] { tableSpaceName, tableManager.getTable().name, pin });
                        actions.addAll(checkpoint.actions);
                        checkpointsTableNameSequenceNumber.put(checkpoint.tableName, checkpoint.sequenceNumber);
                        if (afterTableCheckPointAction != null) {
                            afterTableCheckPointAction.run();
                        }
                    }
                }
            }
            // we are sure that all data as been flushed. upon recovery we will replay the log starting from this position
            actions.addAll(dataStorageManager.writeCheckpointSequenceNumber(tableSpaceUUID, logSequenceNumber));
            /* Indexes checkpoint is handled by TableManagers */
            if (leader) {
                log.dropOldLedgers(logSequenceNumber);
            }
            _logSequenceNumber = log.getLastSequenceNumber();
        } finally {
            if (!alreadLocked) {
                releaseWriteLock(lockStamp, "checkpoint");
            }
        }
        for (PostCheckpointAction action : actions) {
            try {
                action.run();
            } catch (Exception error) {
                LOGGER.log(Level.SEVERE, "postcheckpoint error:" + error, error);
            }
        }
        return new TableSpaceCheckpoint(logSequenceNumber, checkpointsTableNameSequenceNumber);
    } finally {
        long _stop = System.currentTimeMillis();
        LOGGER.log(Level.INFO, "{0} checkpoint finish {1} started ad {2}, finished at {3}, total time {4} ms", new Object[] { nodeId, tableSpaceName, logSequenceNumber, _logSequenceNumber, Long.toString(_stop - _start) });
        checkpointTimeStats.registerSuccessfulEvent(_stop, TimeUnit.MILLISECONDS);
    }
}

Example 39 with LogSequenceNumber

use of herddb.log.LogSequenceNumber in project herddb by diennea.

the class FileDataStorageManager method tableCheckpoint.

@Override
public List<PostCheckpointAction> tableCheckpoint(String tableSpace, String tableName, TableStatus tableStatus, boolean pin) throws DataStorageManagerException {
    LogSequenceNumber logPosition = tableStatus.sequenceNumber;
    Path dir = getTableDirectory(tableSpace, tableName);
    Path checkpointFile = getTableCheckPointsFile(dir, logPosition);
    try {
        if (Files.isRegularFile(checkpointFile)) {
            TableStatus actualStatus = readTableStatusFromFile(checkpointFile);
            if (actualStatus != null && actualStatus.equals(tableStatus)) {
                LOGGER.log(Level.FINE, "tableCheckpoint " + tableSpace + ", " + tableName + ": " + tableStatus + " (pin:" + pin + ") already saved on file " + checkpointFile);
                return Collections.emptyList();
            }
        }
    } catch (IOException err) {
        throw new DataStorageManagerException(err);
    }
    Path parent = getParent(checkpointFile);
    Path checkpointFileTemp = parent.resolve(checkpointFile.getFileName() + ".tmp");
    LOGGER.log(Level.FINE, "tableCheckpoint " + tableSpace + ", " + tableName + ": " + tableStatus + " (pin:" + pin + ") to file " + checkpointFile);
    try (ManagedFile file = ManagedFile.open(checkpointFileTemp, requirefsync);
        SimpleBufferedOutputStream buffer = new SimpleBufferedOutputStream(file.getOutputStream(), COPY_BUFFERS_SIZE);
        XXHash64Utils.HashingOutputStream oo = new XXHash64Utils.HashingOutputStream(buffer);
        ExtendedDataOutputStream dataOutputKeys = new ExtendedDataOutputStream(oo)) {
        // version
        dataOutputKeys.writeVLong(1);
        // flags for future implementations
        dataOutputKeys.writeVLong(0);
        tableStatus.serialize(dataOutputKeys);
        dataOutputKeys.writeLong(oo.hash());
        dataOutputKeys.flush();
        file.sync();
    } catch (IOException err) {
        throw new DataStorageManagerException(err);
    }
    try {
        Files.move(checkpointFileTemp, checkpointFile, StandardCopyOption.REPLACE_EXISTING, StandardCopyOption.ATOMIC_MOVE);
    } catch (IOException err) {
        throw new DataStorageManagerException(err);
    }
    /* Checkpoint pinning */
    final Map<Long, Integer> pins = pinTableAndGetPages(tableSpace, tableName, tableStatus, pin);
    final Set<LogSequenceNumber> checkpoints = pinTableAndGetCheckpoints(tableSpace, tableName, tableStatus, pin);
    long maxPageId = tableStatus.activePages.keySet().stream().max(Comparator.naturalOrder()).orElse(Long.MAX_VALUE);
    List<PostCheckpointAction> result = new ArrayList<>();
    // we can drop old page files now
    List<Path> pageFiles = getTablePageFiles(tableSpace, tableName);
    for (Path p : pageFiles) {
        long pageId = getPageId(p);
        LOGGER.log(Level.FINEST, "checkpoint file {0} pageId {1}", new Object[] { p.toAbsolutePath(), pageId });
        if (pageId > 0 && !pins.containsKey(pageId) && !tableStatus.activePages.containsKey(pageId) && pageId < maxPageId) {
            LOGGER.log(Level.FINEST, "checkpoint file " + p.toAbsolutePath() + " pageId " + pageId + ". will be deleted after checkpoint end");
            result.add(new DeleteFileAction(tableSpace, tableName, "delete page " + pageId + " file " + p.toAbsolutePath(), p));
        }
    }
    try (DirectoryStream<Path> stream = Files.newDirectoryStream(dir)) {
        for (Path p : stream) {
            if (isTableOrIndexCheckpointsFile(p) && !p.equals(checkpointFile)) {
                TableStatus status = readTableStatusFromFile(p);
                if (logPosition.after(status.sequenceNumber) && !checkpoints.contains(status.sequenceNumber)) {
                    LOGGER.log(Level.FINEST, "checkpoint metadata file " + p.toAbsolutePath() + ". will be deleted after checkpoint end");
                    result.add(new DeleteFileAction(tableSpace, tableName, "delete checkpoint metadata file " + p.toAbsolutePath(), p));
                }
            }
        }
    } catch (IOException err) {
        LOGGER.log(Level.SEVERE, "Could not list table dir " + dir, err);
    }
    return result;
}

Example 40 with LogSequenceNumber

use of herddb.log.LogSequenceNumber in project herddb by diennea.

the class FileDataStorageManager method writeCheckpointSequenceNumber.

@Override
public Collection<PostCheckpointAction> writeCheckpointSequenceNumber(String tableSpace, LogSequenceNumber sequenceNumber) throws DataStorageManagerException {
    Path tableSpaceDirectory = getTablespaceDirectory(tableSpace);
    try {
        Files.createDirectories(tableSpaceDirectory);
        Path checkPointFile = getTablespaceCheckPointInfoFile(tableSpace, sequenceNumber);
        Path parent = getParent(checkPointFile);
        Files.createDirectories(parent);
        Path checkpointFileTemp = parent.resolve(checkPointFile.getFileName() + ".tmp");
        LOGGER.log(Level.INFO, "checkpoint for " + tableSpace + " at " + sequenceNumber + " to " + checkPointFile.toAbsolutePath().toString());
        try (ManagedFile file = ManagedFile.open(checkpointFileTemp, requirefsync);
            SimpleBufferedOutputStream buffer = new SimpleBufferedOutputStream(file.getOutputStream(), COPY_BUFFERS_SIZE);
            ExtendedDataOutputStream dout = new ExtendedDataOutputStream(buffer)) {
            // version
            dout.writeVLong(1);
            // flags for future implementations
            dout.writeVLong(0);
            dout.writeUTF(tableSpace);
            dout.writeZLong(sequenceNumber.ledgerId);
            dout.writeZLong(sequenceNumber.offset);
            dout.flush();
            file.sync();
        } catch (IOException err) {
            throw new DataStorageManagerException(err);
        }
        // write file atomically
        Files.move(checkpointFileTemp, checkPointFile, StandardCopyOption.ATOMIC_MOVE, StandardCopyOption.REPLACE_EXISTING);
    } catch (IOException err) {
        throw new DataStorageManagerException(err);
    }
    Collection<PostCheckpointAction> result = new ArrayList<>();
    try (DirectoryStream<Path> stream = Files.newDirectoryStream(tableSpaceDirectory)) {
        for (Path p : stream) {
            if (isTablespaceCheckPointInfoFile(p)) {
                try {
                    LogSequenceNumber logPositionInFile = readLogSequenceNumberFromCheckpointInfoFile(tableSpace, p);
                    if (sequenceNumber.after(logPositionInFile)) {
                        LOGGER.log(Level.FINEST, "checkpoint info file " + p.toAbsolutePath() + ". will be deleted after checkpoint end");
                        result.add(new DeleteFileAction(tableSpace, "checkpoint", "delete checkpoint info file " + p.toAbsolutePath(), p));
                    }
                } catch (DataStorageManagerException ignore) {
                    LOGGER.log(Level.SEVERE, "unparsable checkpoint info file " + p.toAbsolutePath(), ignore);
                // do not auto-delete checkpoint files
                }
            }
        }
    } catch (IOException err) {
        LOGGER.log(Level.SEVERE, "Could not list dir " + tableSpaceDirectory, err);
    }
    return result;
}