Examples with Transaction com.google.apphosting.datastore.DatastoreV3Pb.Transaction used on opensource projects

Example 1 with Transaction

use of com.google.apphosting.datastore.DatastoreV3Pb.Transaction in project appengine-java-standard by GoogleCloudPlatform.

the class LocalDatastoreService method toProto1.

static Transaction toProto1(com.google.apphosting.datastore.proto2api.DatastoreV3Pb.Transaction txn) {
    Transaction txnProto = new Transaction();
    txnProto.mergeFrom(txn.toByteArray());
    return txnProto;
}

Example 2 with Transaction

use of com.google.apphosting.datastore.DatastoreV3Pb.Transaction in project appengine-java-standard by GoogleCloudPlatform.

the class LocalDatastoreService method beginTransaction.

// status
@SuppressWarnings("unused")
public Transaction beginTransaction(Status status, BeginTransactionRequest req) {
    Profile profile = getOrCreateProfile(req.getApp());
    if (req.hasPreviousTransaction()) {
        if (req.getModeEnum() == TransactionMode.READ_ONLY) {
            throw newError(ErrorCode.BAD_REQUEST, TRANSACTION_RETRY_ON_READ_ONLY);
        }
        // synchronize to prevent check-remove race on previous transaction
        synchronized (profile) {
            LiveTxn previousTransaction = profile.getTxnQuietly(req.getPreviousTransaction().getHandle());
            if (previousTransaction != null) {
                if (previousTransaction.concurrencyMode == ConcurrencyMode.READ_ONLY) {
                    throw newError(ErrorCode.BAD_REQUEST, TRANSACTION_RETRY_ON_PREVIOUSLY_READ_ONLY);
                }
                if (previousTransaction.allowMultipleEg != req.isAllowMultipleEg()) {
                    throw newError(ErrorCode.BAD_REQUEST, TRANSACTION_OPTIONS_CHANGED_ON_RESET);
                }
                profile.removeTxn(req.getPreviousTransaction().getHandle());
            }
        }
    }
    Transaction txn = new Transaction().setApp(req.getApp()).setHandle(transactionHandleProvider.getAndIncrement());
    ConcurrencyMode mode = toConcurrencyMode(req.getModeEnum());
    profile.addTxn(txn.getHandle(), new LiveTxn(clock, req.isAllowMultipleEg(), req.getModeEnum()));
    return txn;
}

Example 3 with Transaction

use of com.google.apphosting.datastore.DatastoreV3Pb.Transaction in project appengine-java-standard by GoogleCloudPlatform.

the class LocalDatastoreService method addActionsImpl.

// status
@SuppressWarnings("unused")
private void addActionsImpl(Status status, TaskQueueBulkAddRequest request) {
    if (request.getAddRequestCount() == 0) {
        return;
    }
    // The transactional tasks need to be associated with the txn.
    // When the txn is committed the tasks will be sent back over to
    // the taskqueue stub. We need to wipe out their transactions before sending
    // so that the tasks actually get added and we don't continue spinning
    // around in and infinite loop.
    List<TaskQueueAddRequest> addRequests = new ArrayList<>(request.getAddRequestCount());
    for (TaskQueueAddRequest addRequest : request.getAddRequestList()) {
        addRequests.add(addRequest.toBuilder().clearTransaction().clearDatastoreTransaction().build());
    }
    Transaction transaction;
    if (request.getAddRequestList().get(0).hasDatastoreTransaction()) {
        ByteString datastoreTransaction = request.getAddRequestList().get(0).getDatastoreTransaction();
        try {
            transaction = Transaction.parser().parseFrom(datastoreTransaction);
        } catch (InvalidProtocolBufferException e) {
            throw newError(ErrorCode.BAD_REQUEST, "Invalid transaction");
        }
    } else {
        transaction = toProto1(request.getAddRequest(0).getTransaction());
    }
    Profile profile = profiles.get(transaction.getApp());
    LiveTxn liveTxn = profile.getTxn(transaction.getHandle());
    liveTxn.addActions(addRequests);
}