Exemple #1
0
func (c *Client) DialHost(id string) (Host, error) {
	// TODO: reuse connection if leader id == id
	services := c.service.Select(map[string]string{"id": id})
	if len(services) == 0 {
		return nil, ErrNoServers
	}
	rc, err := rpcplus.DialHTTPPath("tcp", services[0].Addr, rpcplus.DefaultRPCPath, c.dial)
	return newHostClient(c.service, rc, c.dial), err
}
Exemple #2
0
func (c *Client) followLeader(firstErr chan<- error) {
	for update := range c.service.Leaders() {
		if update == nil {
			if firstErr != nil {
				firstErr <- ErrNoServers
				c.Close()
				return
			}
			continue
		}
		c.mtx.Lock()
		if c.c != nil {
			c.c.Close()
			c.c = nil
		}
		c.leaderID = update.Attrs["id"]
		if c.leaderID != c.selfID {
			c.err = Attempts.Run(func() (err error) {
				c.c, err = rpcplus.DialHTTPPath("tcp", update.Addr, rpcplus.DefaultRPCPath, c.dial)
				return
			})
		}
		if c.err == nil {
			close(c.leaderChange)
			c.leaderChange = make(chan struct{})
		}
		c.mtx.Unlock()
		if firstErr != nil {
			firstErr <- c.err
			if c.err != nil {
				c.c = nil
				c.Close()
				return
			}
			firstErr = nil
		}
	}
	// TODO: reconnect to discoverd here
}