func (c *Config) handleDiscovery() error {
p, err := discovery.Do(c.Discovery, c.Name, c.Peer.Addr)
// This is fatal, discovery encountered an unexpected error
// and we have no peer list.
if err != nil && len(c.Peers) == 0 {
log.Fatalf("Discovery failed and a backup peer list wasn't provided: %v", err)
return err
}
// Warn about errors coming from discovery, this isn't fatal
// since the user might have provided a peer list elsewhere.
if err != nil {
log.Warnf("Discovery encountered an error but a backup peer list (%v) was provided: %v", c.Peers, err)
}
for i := range p {
// Strip the scheme off of the peer if it has one
// TODO(bp): clean this up!
purl, err := url.Parse(p[i])
if err == nil {
p[i] = purl.Host
}
}
c.Peers = p
return nil
}
// Helper function to do discovery and return results in expected format
func (s *PeerServer) handleDiscovery(discoverURL string) (peers []string, err error) {
peers, err = discovery.Do(discoverURL, s.Config.Name, s.Config.URL)
// Warn about errors coming from discovery, this isn't fatal
// since the user might have provided a peer list elsewhere,
// or there is some log in data dir.
if err != nil {
log.Warnf("Discovery encountered an error: %v", err)
return
}
for i := range peers {
// Strip the scheme off of the peer if it has one
// TODO(bp): clean this up!
purl, err := url.Parse(peers[i])
if err == nil {
peers[i] = purl.Host
}
}
log.Infof("Discovery fetched back peer list: %v", peers)
return
}
