Examples with Epoch bftsmart.consensus.Epoch used on opensource projects

Example 1 with Epoch

use of bftsmart.consensus.Epoch in project aware by bergerch.

the class Synchronizer method resumeLC.

// This method is invoked by the state transfer protocol to notify the replica
// that it can end synchronization
public void resumeLC() {
    Consensus cons = execManager.getConsensus(tempLastHighestCID.getCID());
    Epoch e = cons.getLastEpoch();
    int ets = cons.getEts();
    if (e == null || e.getTimestamp() != ets) {
        e = cons.createEpoch(ets, controller);
    } else {
        e.clear();
    }
    byte[] hash = tom.computeHash(tempLastHighestCID.getDecision());
    e.propValueHash = hash;
    e.propValue = tempLastHighestCID.getDecision();
    e.deserializedPropValue = tom.checkProposedValue(tempLastHighestCID.getDecision(), false);
    finalise(tempRegency, tempLastHighestCID, tempSignedCollects, tempPropose, tempBatchSize, tempIAmLeader);
}

Example 2 with Epoch

use of bftsmart.consensus.Epoch in project aware by bergerch.

the class ShutdownHookThread method run.

@Override
public void run() {
    StringBuffer buffer = new StringBuffer();
    SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss.SSS");
    int lastCons = tomLayer.getLastExec();
    int currentCons = tomLayer.getInExec();
    Consensus c = null;
    Epoch e = null;
    buffer.append("\n---------- DEBUG INFO ----------\n");
    buffer.append("\nCurrent time: " + sdf.format(new Date()));
    buffer.append("\nCurrent leader: " + tomLayer.execManager.getCurrentLeader());
    buffer.append("\nCurrent regency: " + tomLayer.getSynchronizer().getLCManager().getLastReg());
    buffer.append("\n\nLast finished consensus: " + (lastCons == -1 ? "None" : lastCons));
    if (lastCons > -1) {
        c = tomLayer.execManager.getConsensus(lastCons);
        for (TimestampValuePair rv : c.getWriteSet()) {
            if (rv.getValue() != null && rv.getValue().length > 0)
                rv.setHashedValue(md.digest(rv.getValue()));
        }
        buffer.append("\n\n\t -- Consensus state: \n\n\t\tETS=" + c.getEts() + " \n\t\tWriteSet=[" + c.getWriteSet() + "] \n\t\t(VAL,TS)=[" + c.getQuorumWrites() + "]");
        e = c.getLastEpoch();
        if (e != null) {
            buffer.append("\n\n\t -- Epoch state: \n" + e.toString());
        }
    }
    buffer.append("\n\nConsensus in execution: " + (currentCons == -1 ? "None" : currentCons));
    c = null;
    e = null;
    if (currentCons > -1) {
        c = tomLayer.execManager.getConsensus(currentCons);
        for (TimestampValuePair rv : c.getWriteSet()) {
            if (rv.getValue() != null && rv.getValue().length > 0)
                rv.setHashedValue(md.digest(rv.getValue()));
        }
        buffer.append("\n\n\t -- Consensus state: \n\n\t\tETS=" + c.getEts() + " \n\t\tWriteSet=[" + c.getWriteSet() + "] \n\t\t(VAL,TS)=[" + c.getQuorumWrites() + "]");
        e = c.getLastEpoch();
        if (e != null) {
            buffer.append("\n\n\t -- Epoch state: \n" + e.toString());
        }
    }
    buffer.append("\n\n---------- ---------- ----------\n");
    LoggerFactory.getLogger(this.getClass()).info(buffer.toString());
}

Example 3 with Epoch

use of bftsmart.consensus.Epoch in project bftsmart by blockchain-jd-com.

the class ExecutionManager method isDecidable.

public boolean isDecidable(int cid) {
    if (receivedOutOfContextPropose(cid)) {
        Consensus cons = getConsensus(cid);
        ConsensusMessage prop = outOfContextProposes.get(cons.getId());
        Epoch epoch = cons.getEpoch(prop.getEpoch(), topology);
        byte[] propHash = tomLayer.computeHash(prop.getValue());
        List<ConsensusMessage> msgs = outOfContext.get(cid);
        int countWrites = 0;
        int countAccepts = 0;
        if (msgs != null) {
            for (ConsensusMessage msg : msgs) {
                // 对于Accept类型的共识消息，需要通过getOrigPropValue取到预计算之前的提议值hash
                if (msg.getEpoch() == epoch.getTimestamp() && (Arrays.equals(propHash, msg.getValue()) || Arrays.equals(propHash, msg.getOrigPropValue()))) {
                    if (msg.getType() == MessageFactory.WRITE)
                        countWrites++;
                    else if (msg.getType() == MessageFactory.ACCEPT)
                        countAccepts++;
                }
            }
        }
        if (topology.getStaticConf().isBFT()) {
            return ((countWrites > (2 * topology.getCurrentViewF())) && (countAccepts > (2 * topology.getCurrentViewF())));
        } else {
            return (countAccepts > topology.getQuorum());
        }
    }
    return false;
}

Example 4 with Epoch

use of bftsmart.consensus.Epoch in project bftsmart by blockchain-jd-com.

the class ExecutionManager method preComputeRollback.

// 避免重复预计算
public void preComputeRollback(Consensus cons) {
    if (cons != null && cons.getPrecomputed() && !cons.getPrecomputeCommited()) {
        DefaultRecoverable defaultRecoverable = getAcceptor().getDefaultExecutor();
        for (Epoch epoch : cons.getEpochs().values()) {
            if (epoch != null && epoch.getBatchId() != null) {
                LOGGER.info("I am proc {}, pre compute rollback occur!, cid = {}, epoch = {}", topology.getStaticConf().getProcessId(), cons.getId(), epoch.getTimestamp());
                defaultRecoverable.preComputeRollback(cons.getId(), epoch.getBatchId());
            }
        }
        cons.setPrecomputed(false);
    }
}

Example 5 with Epoch

use of bftsmart.consensus.Epoch in project bftsmart by blockchain-jd-com.

the class Synchronizer method resumeLC.

// This method is invoked by the state transfer protocol to notify the replica
// that it can end synchronization
public void resumeLC() {
    Consensus cons = execManager.getConsensus(tempLastHighestCID.getCID());
    Epoch e = cons.getLastEpoch();
    int ets = cons.getEts();
    if (e == null || e.getTimestamp() != ets) {
        e = cons.createEpoch(ets, controller);
    } else {
        e.clear();
    }
    byte[] hash = tom.computeHash(tempLastHighestCID.getDecision());
    e.propValueHash = hash;
    e.propValue = tempLastHighestCID.getDecision();
    e.deserializedPropValue = tom.checkProposedValue(tempLastHighestCID.getDecision(), false);
    finalise(tempRegency, tempLastHighestCID, tempSignedCollects, tempPropose, tempBatchSize, tempIAmLeader);
}