Exemplo n.º 1
0
//
// run server (as leader or follower)
//
func (s *Coordinator) runProtocol(leader string) (err error) {

	host := s.getHostUDPAddr()

	// If this host is the leader, then start the leader server.
	// Otherwise, start the followerCoordinator.
	if leader == host {
		logging.Debugf("Coordinator.runServer() : Local Coordinator %s is elected as leader. Leading ...", leader)
		s.state.setStatus(protocol.LEADING)

		// start other master services if this node is a candidate as master
		s.idxMgr.startMasterService()
		defer s.idxMgr.stopMasterService()

		err = protocol.RunLeaderServer(s.getHostTCPAddr(), s.listener, s, s, s.factory, s.skillch)
	} else {
		logging.Debugf("Coordinator.runServer() : Remote Coordinator %s is elected as leader. Following ...", leader)
		s.state.setStatus(protocol.FOLLOWING)
		leaderAddr := s.findMatchingPeerTCPAddr(leader)
		if len(leaderAddr) == 0 {
			return NewError(ERROR_COOR_ELECTION_FAIL, NORMAL, COORDINATOR, nil,
				fmt.Sprintf("Index Coordinator cannot find matching TCP addr for leader "+leader))
		}
		err = protocol.RunFollowerServer(s.getHostTCPAddr(), leaderAddr, s, s, s.factory, s.skillch)
	}

	return err
}
Exemplo n.º 2
0
//
// run server (as leader or follower)
//
func (s *Server) runServer(leader string) (err error) {

	host := GetHostUDPAddr()

	// If this host is the leader, then start the leader server.
	// Otherwise, start the followerServer.
	if leader == host {
		log.Current.Debugf("Server.runServer() : Local Server %s is elected as leader. Leading ...", leader)
		s.state.setStatus(protocol.LEADING)
		err = protocol.RunLeaderServer(GetHostTCPAddr(), s.listener, s.state, s.handler, s.factory, s.skillch)
	} else {
		log.Current.Debugf("Server.runServer() : Remote Server %s is elected as leader. Following ...", leader)
		s.state.setStatus(protocol.FOLLOWING)
		leaderAddr := findMatchingPeerTCPAddr(leader)
		if len(leaderAddr) == 0 {
			return common.NewError(common.SERVER_ERROR, "Cannot find matching TCP addr for leader "+leader)
		}
		err = protocol.RunFollowerServer(GetHostTCPAddr(), leaderAddr, s.state, s.handler, s.factory, s.skillch)
	}

	return err
}