func newDiscovery(durl, dproxyurl string, id types.ID) (*discovery, error) {
u, err := url.Parse(durl)
if err != nil {
return nil, err
}
token := u.Path
u.Path = ""
pf, err := newProxyFunc(dproxyurl)
if err != nil {
return nil, err
}
cfg := client.Config{
Transport: &http.Transport{Proxy: pf},
Endpoints: []string{u.String()},
}
c, err := client.New(cfg)
if err != nil {
return nil, err
}
dc := client.NewKeysAPIWithPrefix(c, "")
return &discovery{
cluster: token,
c: dc,
id: id,
url: u,
clock: clockwork.NewRealClock(),
}, nil
}
func getPeersFromDiscoveryURL(discoverURL string) ([]string, error) {
if discoverURL == "" {
return nil, nil
}
u, err := url.Parse(discoverURL)
if err != nil {
return nil, err
}
token := u.Path
u.Path = ""
cfg := client.Config{
Transport: &http.Transport{},
Endpoints: []string{u.String()},
}
c, err := client.New(cfg)
if err != nil {
return nil, err
}
dc := client.NewKeysAPIWithPrefix(c, "")
ctx, cancel := context.WithTimeout(context.Background(), client.DefaultRequestTimeout)
resp, err := dc.Get(ctx, token, nil)
cancel()
if err != nil {
return nil, err
}
peers := make([]string, 0)
// append non-config keys to peers
for _, n := range resp.Node.Nodes {
if g := path.Base(n.Key); g == "_config" || g == "_state" {
continue
}
peers = append(peers, n.Value)
}
return peers, nil
}