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

Example 6 with LogEntry

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

the class TableSpaceManager method beginTransaction.

private StatementExecutionResult beginTransaction() throws StatementExecutionException {
    long id = newTransactionId.incrementAndGet();
    LogEntry entry = LogEntryFactory.beginTransaction(id);
    CommitLogResult pos;
    generalLock.readLock().lock();
    try {
        pos = log.log(entry, false);
        apply(pos, entry, false);
        return new TransactionResult(id, TransactionResult.OutcomeType.BEGIN);
    } catch (Exception err) {
        throw new StatementExecutionException(err);
    } finally {
        generalLock.readLock().unlock();
    }
}

Example 7 with LogEntry

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

the class TableSpaceManager method commitTransaction.

private StatementExecutionResult commitTransaction(CommitTransactionStatement commitTransactionStatement) throws StatementExecutionException {
    long txId = commitTransactionStatement.getTransactionId();
    LogEntry entry = LogEntryFactory.commitTransaction(txId);
    generalLock.readLock().lock();
    try {
        Transaction tx = transactions.get(txId);
        if (tx == null) {
            throw new StatementExecutionException("no such transaction " + commitTransactionStatement.getTransactionId());
        }
        CommitLogResult pos = log.log(entry, true);
        apply(pos, entry, false);
    } catch (Exception err) {
        throw new StatementExecutionException(err);
    } finally {
        generalLock.readLock().unlock();
    }
    return new TransactionResult(txId, TransactionResult.OutcomeType.COMMIT);
}

Example 8 with LogEntry

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

the class TableSpaceManager method startAsLeader.

void startAsLeader() throws DataStorageManagerException, DDLException, LogNotAvailableException {
    if (virtual) {
    } else {
        LOGGER.log(Level.SEVERE, "startAsLeader {0} tablespace {1}", new Object[] { nodeId, tableSpaceName });
        recoverForLeadership();
        // every pending transaction MUST be rollback back
        List<Long> pending_transactions = new ArrayList<>(this.transactions.keySet());
        log.startWriting();
        LOGGER.log(Level.SEVERE, "startAsLeader {0} tablespace {1} log, there were {2} pending transactions to be rolledback", new Object[] { nodeId, tableSpaceName, pending_transactions.size() });
        for (long tx : pending_transactions) {
            LOGGER.log(Level.FINER, "rolling back transaction {0}", tx);
            LogEntry rollback = LogEntryFactory.rollbackTransaction(tx);
            // let followers see the rollback on the log
            CommitLogResult pos = log.log(rollback, true);
            apply(pos, rollback, false);
        }
    }
    leader = true;
}

Example 9 with LogEntry

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

the class TableSpaceManager method createIndex.

private StatementExecutionResult createIndex(CreateIndexStatement statement, Transaction transaction) throws StatementExecutionException {
    generalLock.writeLock().lock();
    try {
        if (indexes.containsKey(statement.getIndexefinition().name)) {
            throw new IndexAlreadyExistsException(statement.getIndexefinition().name);
        }
        LogEntry entry = LogEntryFactory.createIndex(statement.getIndexefinition(), transaction);
        CommitLogResult pos;
        try {
            pos = log.log(entry, entry.transactionId <= 0);
        } catch (LogNotAvailableException ex) {
            throw new StatementExecutionException(ex);
        }
        apply(pos, entry, false);
        return new DDLStatementExecutionResult(entry.transactionId);
    } catch (DataStorageManagerException err) {
        throw new StatementExecutionException(err);
    } finally {
        generalLock.writeLock().unlock();
    }
}

Example 10 with LogEntry

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

the class TableSpaceManager method rollbackTransaction.

private StatementExecutionResult rollbackTransaction(RollbackTransactionStatement rollbackTransactionStatement) throws StatementExecutionException {
    long txId = rollbackTransactionStatement.getTransactionId();
    LogEntry entry = LogEntryFactory.rollbackTransaction(txId);
    generalLock.readLock().lock();
    try {
        Transaction tx = transactions.get(txId);
        if (tx == null) {
            throw new StatementExecutionException("no such transaction " + rollbackTransactionStatement.getTransactionId());
        }
        CommitLogResult pos = log.log(entry, true);
        apply(pos, entry, false);
    } catch (Exception err) {
        throw new StatementExecutionException(err);
    } finally {
        generalLock.readLock().unlock();
    }
    return new TransactionResult(txId, TransactionResult.OutcomeType.ROLLBACK);
}