func dial(addr string) *doozer.Conn {
c, err := doozer.Dial(addr)
if err != nil {
panic(err)
}
return c
}
func Dial(addr string) *Conn {
dzr, err := doozer.Dial(addr)
if err != nil {
log.Fatal("failed to connect to %s: %s", addr, err)
}
return &Conn{Conn: *dzr, Address: addr}
}
// Dial calls doozer.Dial and returns a Snapshot of the coordinator
// at the latest revision.
func Dial(addr string, root string) (s Snapshot, err error) {
dconn, err := doozer.Dial(addr)
if err != nil {
return
}
rev, err := dconn.Rev()
if err != nil {
return
}
s = Snapshot{rev, &conn{addr, root, dconn}}
return
}
// IsCal checks if addr is a CAL in the cluster named name.
// Returns a client if so, nil if not.
func isCal(name, addr string) (*doozer.Conn, error) {
c, err := doozer.Dial(addr)
if err != nil {
return nil, err
}
err = c.Access(rwsk)
if err != nil {
return nil, err
}
v, _, _ := c.Get("/ctl/name", nil)
if string(v) != name {
return nil, nil
}
rev, err := c.Rev()
if err != nil {
return nil, err
}
var cals []string
names, err := c.Getdir("/ctl/cal", rev, 0, -1)
if err != nil {
return nil, err
}
for _, name := range names {
cals = append(cals, name)
}
for _, cal := range cals {
body, _, err := c.Get("/ctl/cal/"+cal, nil)
if err != nil || len(body) == 0 {
continue
}
id := string(body)
v, _, err := c.Get("/ctl/node/"+id+"/addr", nil)
if err != nil {
return nil, err
}
if string(v) == addr {
return c, nil
}
}
return nil, nil
}