bool SyncSourceFeedback::replHandshake(OperationContext* txn) {
        ReplicationCoordinator* replCoord = getGlobalReplicationCoordinator();
        if (replCoord->getCurrentMemberState().primary()) {
            // primary has no one to handshake to
            return true;
        }
        // construct a vector of handshake obj for us as well as all chained members
        std::vector<BSONObj> handshakeObjs;
        replCoord->prepareReplSetUpdatePositionCommandHandshakes(txn, &handshakeObjs);
        LOG(1) << "handshaking upstream updater";
        for (std::vector<BSONObj>::iterator it = handshakeObjs.begin();
                it != handshakeObjs.end();
                ++it) {
            BSONObj res;
            try {
                LOG(2) << "Sending to " << _connection.get()->toString() << " the replication "
                        "handshake: " << *it;
                if (!_connection->runCommand("admin", *it, res)) {
                    std::string errMsg = res["errmsg"].valuestrsafe();
                    massert(17447, "upstream updater is not supported by the member from which we"
                            " are syncing, please update all nodes to 2.6 or later.",
                            errMsg.find("no such cmd") == std::string::npos);

                    log() << "replSet error while handshaking the upstream updater: "
                        << errMsg;

                    // sleep half a second if we are not in our sync source's config
                    // TODO(dannenberg) after 2.8, remove the string comparison 
                    if (res["code"].numberInt() == ErrorCodes::NodeNotFound ||
                            errMsg.find("could not be found in replica set config while attempting "
                                        "to associate it with") != std::string::npos) {

                        // black list sync target for 10 seconds and find a new one
                        replCoord->blacklistSyncSource(_syncTarget,
                                                       Date_t(curTimeMillis64() + 10*1000));
                        BackgroundSync::get()->clearSyncTarget();
                    }

                    _resetConnection();
                    return false;
                }
            }
            catch (const DBException& e) {
                log() << "SyncSourceFeedback error sending handshake: " << e.what() << endl;
                _resetConnection();
                return false;
            }
        }
        return true;
    }
Beispiel #2
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    bool SyncSourceFeedback::replHandshake(OperationContext* txn) {
        ReplicationCoordinator* replCoord = getGlobalReplicationCoordinator();
        if (replCoord->getCurrentMemberState().primary()) {
            // primary has no one to handshake to
            return true;
        }
        // construct a vector of handshake obj for us as well as all chained members
        std::vector<BSONObj> handshakeObjs;
        replCoord->prepareReplSetUpdatePositionCommandHandshakes(txn, &handshakeObjs);
        LOG(1) << "handshaking upstream updater";
        for (std::vector<BSONObj>::iterator it = handshakeObjs.begin();
                it != handshakeObjs.end();
                ++it) {
            BSONObj res;
            try {
                LOG(2) << "Sending to " << _connection.get()->toString() << " the replication "
                        "handshake: " << *it;
                if (!_connection->runCommand("admin", *it, res)) {
                    massert(17447, "upstream updater is not supported by the member from which we"
                            " are syncing, please update all nodes to 2.6 or later.",
                            res["errmsg"].str().find("no such cmd") == std::string::npos);
                    log() << "replSet error while handshaking the upstream updater: "
                        << res["errmsg"].valuestrsafe();

                    _resetConnection();
                    return false;
                }
            }
            catch (const DBException& e) {
                log() << "SyncSourceFeedback error sending handshake: " << e.what() << endl;
                _resetConnection();
                return false;
            }
        }
        return true;
    }