Examples with Locked com.torodb.mongodb.annotations.Locked used on opensource projects

Example 1 with Locked

use of com.torodb.mongodb.annotations.Locked in project torodb by torodb.

the class OplogManager method storeState.

@Locked(exclusive = true)
private void storeState(long hash, OpTime opTime) throws OplogManagerPersistException {
    Preconditions.checkState(isRunning(), "The service is not running");
    try {
        retrier.retry(() -> {
            try (WriteMongodTransaction transaction = connection.openWriteTransaction()) {
                Status<Long> deleteResult = transaction.execute(new Request(OPLOG_DB, null, true, null), DeleteCommand.INSTANCE, new DeleteArgument.Builder(OPLOG_COL).addStatement(new DeleteStatement(DOC_QUERY, false)).build());
                if (!deleteResult.isOk()) {
                    throw new RetrierAbortException(new MongoException(deleteResult));
                }
                //TODO: This should be stored as timestamp once TORODB-189 is resolved
                long optimeAsLong = opTime.toOldBson().getMillisFromUnix();
                Status<InsertResult> insertResult = transaction.execute(new Request(OPLOG_DB, null, true, null), InsertCommand.INSTANCE, new InsertArgument.Builder(OPLOG_COL).addDocument(new BsonDocumentBuilder().appendUnsafe(KEY, new BsonDocumentBuilder().appendUnsafe("hash", newLong(hash)).appendUnsafe("optime_i", DefaultBsonValues.newLong(optimeAsLong)).appendUnsafe("optime_t", newLong(opTime.getTerm())).build()).build()).build());
                if (insertResult.isOk() && insertResult.getResult().getN() != 1) {
                    throw new RetrierAbortException(new MongoException(ErrorCode.OPERATION_FAILED, "More than one element inserted"));
                }
                if (!insertResult.isOk()) {
                    throw new RetrierAbortException(new MongoException(insertResult));
                }
                transaction.commit();
                return Empty.getInstance();
            } catch (UserException ex) {
                throw new RetrierAbortException(ex);
            }
        }, Hint.INFREQUENT_ROLLBACK);
    } catch (RetrierGiveUpException ex) {
        throw new OplogManagerPersistException(ex);
    }
}

Example 2 with Locked

use of com.torodb.mongodb.annotations.Locked in project torodb by torodb.

the class OplogManager method loadState.

@Locked(exclusive = true)
private void loadState() throws OplogManagerPersistException {
    try {
        retrier.retry(() -> {
            try (ReadOnlyMongodTransaction transaction = connection.openReadOnlyTransaction()) {
                Status<FindResult> status = transaction.execute(new Request(OPLOG_DB, null, true, null), FindCommand.INSTANCE, new FindArgument.Builder().setCollection(OPLOG_COL).setSlaveOk(true).build());
                if (!status.isOk()) {
                    throw new RetrierAbortException(new MongoException(status));
                }
                Iterator<BsonDocument> batch = status.getResult().getCursor().getFirstBatch();
                if (!batch.hasNext()) {
                    lastAppliedHash = 0;
                    lastAppliedOpTime = OpTime.EPOCH;
                } else {
                    BsonDocument doc = batch.next();
                    BsonDocument subDoc = BsonReaderTool.getDocument(doc, KEY);
                    lastAppliedHash = BsonReaderTool.getLong(subDoc, "hash");
                    long optimeAsLong = BsonReaderTool.getLong(subDoc, "optime_i");
                    BsonDateTime optimeAsDateTime = DefaultBsonValues.newDateTime(optimeAsLong);
                    lastAppliedOpTime = new OpTime(TimestampToDateTime.toTimestamp(optimeAsDateTime, DefaultBsonValues::newTimestamp), BsonReaderTool.getLong(subDoc, "optime_t"));
                }
                notifyLastAppliedOpTimeChange();
                return Empty.getInstance();
            }
        }, Hint.INFREQUENT_ROLLBACK);
    } catch (RetrierGiveUpException ex) {
        throw new OplogManagerPersistException(ex);
    }
}