Examples with RunningStatementsStats herddb.core.RunningStatementsStats used on opensource projects

Example 1 with RunningStatementsStats

use of herddb.core.RunningStatementsStats in project herddb by diennea.

the class ServerSideConnectionPeer method handleExecuteStatements.

private void handleExecuteStatements(Pdu message, Channel channel) {
    long transactionId = PduCodec.ExecuteStatements.readTx(message);
    String tableSpace = PduCodec.ExecuteStatements.readTablespace(message);
    long statementId = PduCodec.ExecuteStatements.readStatementId(message);
    String query = statementId > 0 ? preparedStatements.resolveQuery(tableSpace, statementId) : PduCodec.ExecuteStatements.readQuery(message);
    if (query == null) {
        ByteBuf error = PduCodec.ErrorResponse.writeMissingPreparedStatementError(message.messageId, "bad statement id: " + statementId);
        channel.sendReplyMessage(message.messageId, error);
        message.close();
        return;
    }
    boolean returnValues = PduCodec.ExecuteStatements.readReturnValues(message);
    PduCodec.ListOfListsReader statementParameters = PduCodec.ExecuteStatements.startReadStatementsParameters(message);
    int numStatements = statementParameters.getNumLists();
    List<List<Object>> batch = new ArrayList<>(numStatements);
    for (int i = 0; i < numStatements; i++) {
        PduCodec.ObjectListReader parametersReader = statementParameters.nextList();
        List<Object> batchParams = new ArrayList<>(parametersReader.getNumParams());
        for (int j = 0; j < parametersReader.getNumParams(); j++) {
            batchParams.add(parametersReader.nextObject());
        }
        batch.add(batchParams);
    }
    RunningStatementsStats runningStatements = server.getManager().getRunningStatements();
    RunningStatementInfo statementInfo = new RunningStatementInfo(query, System.currentTimeMillis(), tableSpace, "", numStatements);
    try {
        List<TranslatedQuery> queries = new ArrayList<>();
        for (int i = 0; i < numStatements; i++) {
            List<Object> parameters = batch.get(i);
            TranslatedQuery translatedQuery = server.getManager().getPlanner().translate(tableSpace, query, parameters, false, true, returnValues, -1);
            queries.add(translatedQuery);
        }
        List<Long> updateCounts = new CopyOnWriteArrayList<>();
        List<Map<String, Object>> otherDatas = new CopyOnWriteArrayList<>();
        class ComputeNext implements BiConsumer<StatementExecutionResult, Throwable> {

            int current;

            public ComputeNext(int current) {
                this.current = current;
            }

            @Override
            public void accept(StatementExecutionResult result, Throwable error) {
                if (error != null) {
                    ByteBuf errorMsg = composeErrorResponse(message.messageId, error);
                    channel.sendReplyMessage(message.messageId, errorMsg);
                    message.close();
                    runningStatements.unregisterRunningStatement(statementInfo);
                    return;
                }
                if (result instanceof DMLStatementExecutionResult) {
                    DMLStatementExecutionResult dml = (DMLStatementExecutionResult) result;
                    Map<String, Object> otherData = Collections.emptyMap();
                    if (returnValues && dml.getKey() != null) {
                        TranslatedQuery translatedQuery = queries.get(current - 1);
                        Statement statement = translatedQuery.plan.mainStatement;
                        TableAwareStatement tableStatement = (TableAwareStatement) statement;
                        Table table = server.getManager().getTableSpaceManager(statement.getTableSpace()).getTableManager(tableStatement.getTable()).getTable();
                        Object key = RecordSerializer.deserializePrimaryKey(dml.getKey(), table);
                        otherData = new HashMap<>();
                        otherData.put("_key", key);
                        if (dml.getNewvalue() != null) {
                            Map<String, Object> newvalue = RecordSerializer.toBean(new Record(dml.getKey(), dml.getNewvalue()), table);
                            otherData.putAll(newvalue);
                        }
                    }
                    updateCounts.add((long) dml.getUpdateCount());
                    otherDatas.add(otherData);
                } else if (result instanceof DDLStatementExecutionResult) {
                    Map<String, Object> otherData = Collections.emptyMap();
                    updateCounts.add(1L);
                    otherDatas.add(otherData);
                } else {
                    ByteBuf response = PduCodec.ErrorResponse.write(message.messageId, "bad result type " + result.getClass() + " (" + result + ")");
                    channel.sendReplyMessage(message.messageId, response);
                    message.close();
                    runningStatements.unregisterRunningStatement(statementInfo);
                    return;
                }
                long newTransactionId = result.transactionId;
                if (current == queries.size()) {
                    try {
                        ByteBuf response = PduCodec.ExecuteStatementsResult.write(message.messageId, updateCounts, otherDatas, newTransactionId);
                        channel.sendReplyMessage(message.messageId, response);
                        message.close();
                        runningStatements.unregisterRunningStatement(statementInfo);
                    } catch (Throwable t) {
                        LOGGER.log(Level.SEVERE, "Internal error", t);
                    }
                    return;
                }
                TranslatedQuery nextPlannedQuery = queries.get(current);
                TransactionContext transactionContext = new TransactionContext(newTransactionId);
                CompletableFuture<StatementExecutionResult> nextPromise = server.getManager().executePlanAsync(nextPlannedQuery.plan, nextPlannedQuery.context, transactionContext);
                nextPromise.whenComplete(new ComputeNext(current + 1));
            }
        }
        TransactionContext transactionContext = new TransactionContext(transactionId);
        TranslatedQuery firstTranslatedQuery = queries.get(0);
        server.getManager().executePlanAsync(firstTranslatedQuery.plan, firstTranslatedQuery.context, transactionContext).whenComplete(new ComputeNext(1));
    } catch (HerdDBInternalException err) {
        ByteBuf response = composeErrorResponse(message.messageId, err);
        channel.sendReplyMessage(message.messageId, response);
        message.close();
        runningStatements.unregisterRunningStatement(statementInfo);
    }
}

Example 2 with RunningStatementsStats

use of herddb.core.RunningStatementsStats in project herddb by diennea.

the class ServerSideConnectionPeer method handleOpenScanner.

private void handleOpenScanner(Pdu message, Channel channel) {
    long txId = PduCodec.OpenScanner.readTx(message);
    String tableSpace = PduCodec.OpenScanner.readTablespace(message);
    long statementId = PduCodec.OpenScanner.readStatementId(message);
    String query = statementId > 0 ? preparedStatements.resolveQuery(tableSpace, statementId) : PduCodec.OpenScanner.readQuery(message);
    if (query == null) {
        ByteBuf error = PduCodec.ErrorResponse.writeMissingPreparedStatementError(message.messageId, "bad statement id: " + statementId);
        channel.sendReplyMessage(message.messageId, error);
        return;
    }
    long scannerId = PduCodec.OpenScanner.readScannerId(message);
    int fetchSize = PduCodec.OpenScanner.readFetchSize(message);
    if (fetchSize <= 0) {
        fetchSize = 10;
    }
    // default 0
    int maxRows = PduCodec.OpenScanner.readMaxRows(message);
    PduCodec.ObjectListReader parametersReader = PduCodec.OpenScanner.startReadParameters(message);
    List<Object> parameters = new ArrayList<>(parametersReader.getNumParams());
    for (int i = 0; i < parametersReader.getNumParams(); i++) {
        parameters.add(parametersReader.nextObject());
    }
    // with clients older than 0.20.0 keepReadLocks will be always true
    byte trailer = parametersReader.readTrailer();
    boolean keepReadLocks = !isDontKeepReadLocks(trailer);
    if (LOGGER.isLoggable(Level.FINER)) {
        LOGGER.log(Level.FINER, "openScanner txId+" + txId + ", fetchSize " + fetchSize + ", maxRows " + maxRows + ", keepReadLocks " + keepReadLocks + ", " + query + " with " + parameters);
    }
    RunningStatementsStats runningStatements = server.getManager().getRunningStatements();
    RunningStatementInfo statementInfo = new RunningStatementInfo(query, System.currentTimeMillis(), tableSpace, "", 1);
    try {
        TranslatedQuery translatedQuery = server.getManager().getPlanner().translate(tableSpace, query, parameters, true, true, false, maxRows);
        translatedQuery.context.setForceRetainReadLock(keepReadLocks);
        if (LOGGER.isLoggable(Level.FINEST)) {
            LOGGER.log(Level.FINEST, "{0} -> {1}", new Object[] { query, translatedQuery.plan.mainStatement });
        }
        TransactionContext transactionContext = new TransactionContext(txId);
        if (translatedQuery.plan.mainStatement instanceof SQLPlannedOperationStatement || translatedQuery.plan.mainStatement instanceof ScanStatement) {
            runningStatements.registerRunningStatement(statementInfo);
            ScanResult scanResult = (ScanResult) server.getManager().executePlan(translatedQuery.plan, translatedQuery.context, transactionContext);
            DataScanner dataScanner = scanResult.dataScanner;
            ServerSideScannerPeer scanner = new ServerSideScannerPeer(dataScanner);
            String[] columns = dataScanner.getFieldNames();
            List<DataAccessor> records = dataScanner.consume(fetchSize);
            TuplesList tuplesList = new TuplesList(columns, records);
            boolean last = dataScanner.isFinished();
            if (LOGGER.isLoggable(Level.FINEST)) {
                LOGGER.log(Level.FINEST, "sending first {0} records to scanner {1} query {2}", new Object[] { records.size(), scannerId, query });
            }
            if (!last) {
                scanners.put(scannerId, scanner);
            }
            try {
                ByteBuf result = PduCodec.ResultSetChunk.write(message.messageId, tuplesList, last, dataScanner.getTransactionId());
                channel.sendReplyMessage(message.messageId, result);
            } catch (HerdDBInternalException err) {
                // do not leak an unserializable scanner
                scanner.close();
                throw err;
            }
            if (last) {
                // no need to hold the scanner anymore
                scanner.close();
            }
        } else {
            ByteBuf error = PduCodec.ErrorResponse.write(message.messageId, "unsupported query type for scan " + query + ": PLAN is " + translatedQuery.plan);
            channel.sendReplyMessage(message.messageId, error);
        }
    } catch (DataScannerException | HerdDBInternalException err) {
        if (err.getCause() != null && err.getCause() instanceof ValidationException) {
            // no stacktraces for bad queries
            LOGGER.log(Level.FINE, "SQL error on scanner " + scannerId + ": " + err);
        } else {
            LOGGER.log(Level.SEVERE, "error on scanner " + scannerId + ": " + err, err);
        }
        scanners.remove(scannerId);
        ByteBuf error = composeErrorResponse(message.messageId, err);
        channel.sendReplyMessage(message.messageId, error);
    } finally {
        runningStatements.unregisterRunningStatement(statementInfo);
    }
}

Example 3 with RunningStatementsStats

use of herddb.core.RunningStatementsStats in project herddb by diennea.

the class ServerSideConnectionPeer method handleExecuteStatement.

private void handleExecuteStatement(Pdu message, Channel channel) {
    long txId = PduCodec.ExecuteStatement.readTx(message);
    String tablespace = PduCodec.ExecuteStatement.readTablespace(message);
    long statementId = PduCodec.ExecuteStatement.readStatementId(message);
    String query = statementId > 0 ? preparedStatements.resolveQuery(tablespace, statementId) : PduCodec.ExecuteStatement.readQuery(message);
    if (query == null) {
        ByteBuf error = PduCodec.ErrorResponse.writeMissingPreparedStatementError(message.messageId, "bad statement id: " + statementId);
        channel.sendReplyMessage(message.messageId, error);
        message.close();
        return;
    }
    boolean returnValues = PduCodec.ExecuteStatement.readReturnValues(message);
    PduCodec.ObjectListReader parametersReader = PduCodec.ExecuteStatement.startReadParameters(message);
    List<Object> parameters = new ArrayList<>(parametersReader.getNumParams());
    for (int i = 0; i < parametersReader.getNumParams(); i++) {
        parameters.add(parametersReader.nextObject());
    }
    if (LOGGER.isLoggable(Level.FINEST)) {
        LOGGER.log(Level.FINEST, "query {0} with {1}", new Object[] { query, parameters });
    }
    RunningStatementInfo statementInfo = new RunningStatementInfo(query, System.currentTimeMillis(), tablespace, "", 1);
    TransactionContext transactionContext = new TransactionContext(txId);
    TranslatedQuery translatedQuery;
    try {
        translatedQuery = server.getManager().getPlanner().translate(tablespace, query, parameters, false, true, returnValues, -1);
    } catch (StatementExecutionException ex) {
        ByteBuf error = composeErrorResponse(message.messageId, ex);
        channel.sendReplyMessage(message.messageId, error);
        message.close();
        return;
    }
    Statement statement = translatedQuery.plan.mainStatement;
    // LOGGER.log(Level.SEVERE, "query " + query + ", " + parameters + ", plan: " + translatedQuery.plan);
    RunningStatementsStats runningStatements = server.getManager().getRunningStatements();
    runningStatements.registerRunningStatement(statementInfo);
    CompletableFuture<StatementExecutionResult> res = server.getManager().executePlanAsync(translatedQuery.plan, translatedQuery.context, transactionContext);
    // LOGGER.log(Level.SEVERE, "query " + query + ", " + parameters + ", result:" + result);
    res.whenComplete((result, err) -> {
        try {
            runningStatements.unregisterRunningStatement(statementInfo);
            if (err != null) {
                while (err instanceof CompletionException) {
                    err = err.getCause();
                }
                if (err instanceof DuplicatePrimaryKeyException) {
                    ByteBuf error = PduCodec.ErrorResponse.writeSqlIntegrityConstraintsViolation(message.messageId, new SQLIntegrityConstraintViolationException(err));
                    channel.sendReplyMessage(message.messageId, error);
                } else if (err instanceof NotLeaderException) {
                    ByteBuf error = composeErrorResponse(message.messageId, err);
                    channel.sendReplyMessage(message.messageId, error);
                } else if (err instanceof StatementExecutionException) {
                    ByteBuf error = composeErrorResponse(message.messageId, err);
                    channel.sendReplyMessage(message.messageId, error);
                } else {
                    LOGGER.log(Level.SEVERE, "unexpected error on query " + query + ", parameters: " + parameters + ":" + err, err);
                    ByteBuf error = composeErrorResponse(message.messageId, err);
                    channel.sendReplyMessage(message.messageId, error);
                }
                return;
            }
            if (result instanceof DMLStatementExecutionResult) {
                DMLStatementExecutionResult dml = (DMLStatementExecutionResult) result;
                Map<String, Object> newRecord = null;
                if (returnValues && dml.getKey() != null) {
                    TableAwareStatement tableStatement = statement.unwrap(TableAwareStatement.class);
                    Table table = server.getManager().getTableSpaceManager(statement.getTableSpace()).getTableManager(tableStatement.getTable()).getTable();
                    newRecord = new HashMap<>();
                    Object newKey = RecordSerializer.deserializePrimaryKey(dml.getKey(), table);
                    newRecord.put("_key", newKey);
                    if (dml.getNewvalue() != null) {
                        newRecord.putAll(RecordSerializer.toBean(new Record(dml.getKey(), dml.getNewvalue()), table));
                    }
                }
                channel.sendReplyMessage(message.messageId, PduCodec.ExecuteStatementResult.write(message.messageId, dml.getUpdateCount(), dml.transactionId, newRecord));
            } else if (result instanceof GetResult) {
                GetResult get = (GetResult) result;
                if (!get.found()) {
                    channel.sendReplyMessage(message.messageId, PduCodec.ExecuteStatementResult.write(message.messageId, 0, get.transactionId, null));
                } else {
                    Map<String, Object> record = get.getRecord().toBean(get.getTable());
                    channel.sendReplyMessage(message.messageId, PduCodec.ExecuteStatementResult.write(message.messageId, 1, get.transactionId, record));
                }
            } else if (result instanceof TransactionResult) {
                TransactionResult txresult = (TransactionResult) result;
                channel.sendReplyMessage(message.messageId, PduCodec.ExecuteStatementResult.write(message.messageId, 1, txresult.getTransactionId(), null));
            } else if (result instanceof DDLStatementExecutionResult) {
                DDLStatementExecutionResult ddl = (DDLStatementExecutionResult) result;
                channel.sendReplyMessage(message.messageId, PduCodec.ExecuteStatementResult.write(message.messageId, 1, ddl.transactionId, null));
            } else if (result instanceof DataConsistencyStatementResult) {
                channel.sendReplyMessage(message.messageId, PduCodec.ExecuteStatementResult.write(message.messageId, 0, 0, null));
            } else {
                ByteBuf error = PduCodec.ErrorResponse.write(message.messageId, "unknown result type:" + result);
                channel.sendReplyMessage(message.messageId, error);
            }
        } finally {
            message.close();
        }
    });
}