Examples with TransactionBuilder org.hyperledger.fabric.sdk.transaction.TransactionBuilder used on opensource projects

Example 1 with TransactionBuilder

use of org.hyperledger.fabric.sdk.transaction.TransactionBuilder in project fabric-sdk-java by hyperledger.

the class Channel method sendTransaction.

/**
 * Send transaction to one of a specified set of orderers with the specified user context.
 * IF there are no event hubs or eventing peers this future returns immediately completed
 * indicating that orderer has accepted the transaction only.
 *
 * @param proposalResponses
 * @param transactionOptions
 * @return Future allowing access to the result of the transaction invocation.
 */
public CompletableFuture<TransactionEvent> sendTransaction(Collection<ProposalResponse> proposalResponses, TransactionOptions transactionOptions) {
    try {
        if (null == transactionOptions) {
            throw new InvalidArgumentException("Parameter transactionOptions can't be null");
        }
        checkChannelState();
        User userContext = transactionOptions.userContext != null ? transactionOptions.userContext : client.getUserContext();
        userContextCheck(userContext);
        if (null == proposalResponses) {
            throw new InvalidArgumentException("sendTransaction proposalResponses was null");
        }
        List<Orderer> orderers = transactionOptions.orderers != null ? transactionOptions.orderers : new ArrayList<>(getOrderers());
        // make certain we have our own copy
        final List<Orderer> shuffeledOrderers = new ArrayList<>(orderers);
        if (transactionOptions.shuffleOrders) {
            Collections.shuffle(shuffeledOrderers);
        }
        if (config.getProposalConsistencyValidation()) {
            HashSet<ProposalResponse> invalid = new HashSet<>();
            int consistencyGroups = SDKUtils.getProposalConsistencySets(proposalResponses, invalid).size();
            if (consistencyGroups != 1 || !invalid.isEmpty()) {
                throw new IllegalArgumentException(format("The proposal responses have %d inconsistent groups with %d that are invalid." + " Expected all to be consistent and none to be invalid.", consistencyGroups, invalid.size()));
            }
        }
        List<FabricProposalResponse.Endorsement> ed = new LinkedList<>();
        FabricProposal.Proposal proposal = null;
        ByteString proposalResponsePayload = null;
        String proposalTransactionID = null;
        for (ProposalResponse sdkProposalResponse : proposalResponses) {
            ed.add(sdkProposalResponse.getProposalResponse().getEndorsement());
            if (proposal == null) {
                proposal = sdkProposalResponse.getProposal();
                proposalTransactionID = sdkProposalResponse.getTransactionID();
                proposalResponsePayload = sdkProposalResponse.getProposalResponse().getPayload();
            }
        }
        TransactionBuilder transactionBuilder = TransactionBuilder.newBuilder();
        Payload transactionPayload = transactionBuilder.chaincodeProposal(proposal).endorsements(ed).proposalResponsePayload(proposalResponsePayload).build();
        Envelope transactionEnvelope = createTransactionEnvelope(transactionPayload, userContext);
        NOfEvents nOfEvents = transactionOptions.nOfEvents;
        if (nOfEvents == null) {
            nOfEvents = NOfEvents.createNofEvents();
            Collection<Peer> eventingPeers = getEventingPeers();
            boolean anyAdded = false;
            if (!eventingPeers.isEmpty()) {
                anyAdded = true;
                nOfEvents.addPeers(eventingPeers);
            }
            Collection<EventHub> eventHubs = getEventHubs();
            if (!eventHubs.isEmpty()) {
                anyAdded = true;
                nOfEvents.addEventHubs(getEventHubs());
            }
            if (!anyAdded) {
                nOfEvents = NOfEvents.createNoEvents();
            }
        } else if (nOfEvents != NOfEvents.nofNoEvents) {
            StringBuilder issues = new StringBuilder(100);
            Collection<Peer> eventingPeers = getEventingPeers();
            nOfEvents.unSeenPeers().forEach(peer -> {
                if (peer.getChannel() != this) {
                    issues.append(format("Peer %s added to NOFEvents does not belong this channel. ", peer.getName()));
                } else if (!eventingPeers.contains(peer)) {
                    issues.append(format("Peer %s added to NOFEvents is not a eventing Peer in this channel. ", peer.getName()));
                }
            });
            nOfEvents.unSeenEventHubs().forEach(eventHub -> {
                if (!eventHubs.contains(eventHub)) {
                    issues.append(format("Eventhub %s added to NOFEvents does not belong this channel. ", eventHub.getName()));
                }
            });
            if (nOfEvents.unSeenEventHubs().isEmpty() && nOfEvents.unSeenPeers().isEmpty()) {
                issues.append("NofEvents had no Eventhubs added or Peer eventing services.");
            }
            String foundIssues = issues.toString();
            if (!foundIssues.isEmpty()) {
                throw new InvalidArgumentException(foundIssues);
            }
        }
        final boolean replyonly = nOfEvents == NOfEvents.nofNoEvents || (getEventHubs().isEmpty() && getEventingPeers().isEmpty());
        CompletableFuture<TransactionEvent> sret;
        if (replyonly) {
            // If there are no eventhubs to complete the future, complete it
            // immediately but give no transaction event
            logger.debug(format("Completing transaction id %s immediately no event hubs or peer eventing services found in channel %s.", proposalTransactionID, name));
            sret = new CompletableFuture<>();
        } else {
            sret = registerTxListener(proposalTransactionID, nOfEvents, transactionOptions.failFast);
        }
        logger.debug(format("Channel %s sending transaction to orderer(s) with TxID %s ", name, proposalTransactionID));
        boolean success = false;
        // Save last exception to report to user .. others are just logged.
        Exception lException = null;
        BroadcastResponse resp = null;
        Orderer failed = null;
        for (Orderer orderer : shuffeledOrderers) {
            if (failed != null) {
                logger.warn(format("Channel %s  %s failed. Now trying %s.", name, failed, orderer));
            }
            failed = orderer;
            try {
                if (null != diagnosticFileDumper) {
                    logger.trace(format("Sending to channel %s, orderer: %s, transaction: %s", name, orderer.getName(), diagnosticFileDumper.createDiagnosticProtobufFile(transactionEnvelope.toByteArray())));
                }
                resp = orderer.sendTransaction(transactionEnvelope);
                // no longer last exception .. maybe just failed.
                lException = null;
                if (resp.getStatus() == Status.SUCCESS) {
                    success = true;
                    break;
                } else {
                    logger.warn(format("Channel %s %s failed. Status returned %s", name, orderer, getRespData(resp)));
                }
            } catch (Exception e) {
                String emsg = format("Channel %s unsuccessful sendTransaction to orderer %s (%s)", name, orderer.getName(), orderer.getUrl());
                if (resp != null) {
                    emsg = format("Channel %s unsuccessful sendTransaction to orderer %s (%s).  %s", name, orderer.getName(), orderer.getUrl(), getRespData(resp));
                }
                logger.error(emsg);
                lException = new Exception(emsg, e);
            }
        }
        if (success) {
            logger.debug(format("Channel %s successful sent to Orderer transaction id: %s", name, proposalTransactionID));
            if (replyonly) {
                // just say we're done.
                sret.complete(null);
            }
            return sret;
        } else {
            String emsg = format("Channel %s failed to place transaction %s on Orderer. Cause: UNSUCCESSFUL. %s", name, proposalTransactionID, getRespData(resp));
            unregisterTxListener(proposalTransactionID);
            CompletableFuture<TransactionEvent> ret = new CompletableFuture<>();
            ret.completeExceptionally(lException != null ? new Exception(emsg, lException) : new Exception(emsg));
            return ret;
        }
    } catch (Exception e) {
        CompletableFuture<TransactionEvent> future = new CompletableFuture<>();
        future.completeExceptionally(e);
        return future;
    }
}