virtual bool run(OperationContext* txn, const string& , BSONObj& cmdObj, int, string& errmsg, BSONObjBuilder& result, bool fromRepl) { BSONObj configObj; if( cmdObj["replSetInitiate"].type() == Object ) { configObj = cmdObj["replSetInitiate"].Obj(); } if (configObj.isEmpty()) { result.append("info2", "no configuration explicitly specified -- making one"); log() << "replSet info initiate : no configuration specified. " "Using a default configuration for the set"; ReplicationCoordinatorExternalStateImpl externalState; std::string name; std::vector<HostAndPort> seeds; std::set<HostAndPort> seedSet; parseReplSetSeedList( &externalState, getGlobalReplicationCoordinator()->getSettings().replSet, name, seeds, seedSet); // may throw... BSONObjBuilder b; b.append("_id", name); b.append("version", 1); BSONObjBuilder members; HostAndPort me = someHostAndPortForMe(); members.append("0", BSON( "_id" << 0 << "host" << me.toString() )); result.append("me", me.toString()); for( unsigned i = 0; i < seeds.size(); i++ ) { members.append(BSONObjBuilder::numStr(i+1), BSON( "_id" << i+1 << "host" << seeds[i].toString())); } b.appendArray("members", members.obj()); configObj = b.obj(); log() << "replSet created this configuration for initiation : " << configObj.toString(); } if (configObj.getField("version").eoo()) { // Missing version field defaults to version 1. BSONObjBuilder builder; builder.appendElements(configObj); builder.append("version", 1); configObj = builder.obj(); } Status status = getGlobalReplicationCoordinator()->processReplSetInitiate(txn, configObj, &result); return appendCommandStatus(result, status); }
Status LegacyReplicationCoordinator::processReplSetInitiate(OperationContext* txn, const BSONObj& givenConfig, BSONObjBuilder* resultObj) { log() << "replSet replSetInitiate admin command received from client" << rsLog; if (!_settings.usingReplSets()) { return Status(ErrorCodes::NoReplicationEnabled, "server is not running with --replSet"); } if( theReplSet ) { resultObj->append("info", "try querying " + rsConfigNs + " to see current configuration"); return Status(ErrorCodes::AlreadyInitialized, "already initialized"); } try { { // just make sure we can get a write lock before doing anything else. we'll // reacquire one later. of course it could be stuck then, but this check lowers the // risk if weird things are up. time_t t = time(0); Lock::GlobalWrite lk(txn->lockState()); if( time(0)-t > 10 ) { return Status(ErrorCodes::ExceededTimeLimit, "took a long time to get write lock, so not initiating. " "Initiate when server less busy?"); } /* check that we don't already have an oplog. that could cause issues. it is ok if the initiating member has *other* data than that. */ BSONObj o; if( Helpers::getFirst(txn, rsoplog, o) ) { return Status(ErrorCodes::AlreadyInitialized, rsoplog + string(" is not empty on the initiating member. " "cannot initiate.")); } } if( ReplSet::startupStatus == ReplSet::BADCONFIG ) { resultObj->append("info", ReplSet::startupStatusMsg.get()); return Status(ErrorCodes::InvalidReplicaSetConfig, "server already in BADCONFIG state (check logs); not initiating"); } if( ReplSet::startupStatus != ReplSet::EMPTYCONFIG ) { resultObj->append("startupStatus", ReplSet::startupStatus); resultObj->append("info", _settings.replSet); return Status(ErrorCodes::InvalidReplicaSetConfig, "all members and seeds must be reachable to initiate set"); } BSONObj configObj; if (!givenConfig.isEmpty()) { configObj = givenConfig; } else { resultObj->append("info2", "no configuration explicitly specified -- making one"); log() << "replSet info initiate : no configuration specified. " "Using a default configuration for the set" << rsLog; string name; vector<HostAndPort> seeds; set<HostAndPort> seedSet; parseReplSetSeedList(_settings.replSet, name, seeds, seedSet); // may throw... BSONObjBuilder b; b.append("_id", name); BSONObjBuilder members; HostAndPort me = someHostAndPortForMe(); members.append("0", BSON( "_id" << 0 << "host" << me.toString() )); resultObj->append("me", me.toString()); for( unsigned i = 0; i < seeds.size(); i++ ) { members.append(BSONObjBuilder::numStr(i+1), BSON( "_id" << i+1 << "host" << seeds[i].toString())); } b.appendArray("members", members.obj()); configObj = b.obj(); log() << "replSet created this configuration for initiation : " << configObj.toString() << rsLog; } scoped_ptr<ReplSetConfig> newConfig; try { newConfig.reset(ReplSetConfig::make(configObj)); } catch (const DBException& e) { log() << "replSet replSetInitiate exception: " << e.what() << rsLog; return Status(ErrorCodes::InvalidReplicaSetConfig, mongoutils::str::stream() << "couldn't parse cfg object " << e.what()); } if( newConfig->version > 1 ) { return Status(ErrorCodes::InvalidReplicaSetConfig, "can't initiate with a version number greater than 1"); } log() << "replSet replSetInitiate config object parses ok, " << newConfig->members.size() << " members specified" << rsLog; checkMembersUpForConfigChange(*newConfig, *resultObj, true); log() << "replSet replSetInitiate all members seem up" << rsLog; createOplog(txn); Lock::GlobalWrite lk(txn->lockState()); BSONObj comment = BSON( "msg" << "initiating set"); newConfig->saveConfigLocally(txn, comment); log() << "replSet replSetInitiate config now saved locally. " "Should come online in about a minute." << rsLog; resultObj->append("info", "Config now saved locally. Should come online in about a minute."); ReplSet::startupStatus = ReplSet::SOON; ReplSet::startupStatusMsg.set("Received replSetInitiate - " "should come online shortly."); } catch(const DBException& e ) { return e.toStatus(); } return Status::OK(); }