Ejemplo n.º 1
0
//
// Bootstrp
//
func (s *Server) bootstrap() (err error) {

	// Initialize server state
	s.state = newServerState()

	// Initialize repository service
	s.repo, err = r.OpenRepository()
	if err != nil {
		return err
	}
	s.log = r.NewCommitLog(s.repo)
	s.srvConfig = r.NewServerConfig(s.repo)

	// Create and initialize new txn state.
	s.txn = common.NewTxnState()

	// initialize the current transaction id to the lastLoggedTxid.  This
	// is the txid that this node has seen so far.  If this node becomes
	// the leader, a new epoch will be used and new current txid will
	// be generated. So no need to initialize the epoch at this point.
	lastLoggedTxid, err := s.srvConfig.GetLastLoggedTxnId()
	if err != nil {
		return err
	}
	s.txn.InitCurrentTxnid(common.Txnid(lastLoggedTxid))

	// Initialize various callback facility for leader election and
	// voting protocol.
	s.factory = message.NewConcreteMsgFactory()
	s.handler = action.NewServerAction(s.repo, s.log, s.srvConfig, s, s.txn, s.factory, s)
	s.skillch = make(chan bool, 1) // make it buffered to unblock sender
	s.site = nil

	// Need to start the peer listener before election. A follower may
	// finish its election before a leader finishes its election. Therefore,
	// a follower node can request a connection to the leader node before that
	// node knows it is a leader.  By starting the listener now, it allows the
	// follower to establish the connection and let the leader handles this
	// connection at a later time (when it is ready to be a leader).
	s.listener, err = common.StartPeerListener(GetHostTCPAddr())
	if err != nil {
		return common.WrapError(common.SERVER_ERROR, "Fail to start PeerListener.", err)
	}

	// Start a request listener.
	s.reqListener, err = StartRequestListener(GetHostRequestAddr(), s)
	if err != nil {
		return common.WrapError(common.SERVER_ERROR, "Fail to start RequestListener.", err)
	}

	return nil
}
Ejemplo n.º 2
0
func NewDefaultServerAction(repository *repo.Repository,
	server DefaultServerCallback,
	txn *common.TxnState) *ServerAction {

	log := repo.NewCommitLog(repository)
	config := repo.NewServerConfig(repository)
	factory := message.NewConcreteMsgFactory()

	return &ServerAction{
		repo:     repository,
		log:      log,
		config:   config,
		txn:      txn,
		server:   server,
		notifier: nil,
		factory:  factory,
		verifier: server}
}