coredns/middleware/proxy/setup.go
Miek Gieben 8931ede142 core: hide registerHandler (#964)
* core: hide registerHandler

Remove RegisterHandler and just make it implicit when we look at the
handler compilation step.

* Rename GetHandler to just Handler

Update callers and make auto check Hander in OnStartup.

* Up test coverage in erratic

* up test coverage
2017-08-22 14:21:42 +01:00

45 lines
899 B
Go

package proxy
import (
"github.com/coredns/coredns/core/dnsserver"
"github.com/coredns/coredns/middleware"
"github.com/mholt/caddy"
)
func init() {
caddy.RegisterPlugin("proxy", caddy.Plugin{
ServerType: "dns",
Action: setup,
})
}
func setup(c *caddy.Controller) error {
upstreams, err := NewStaticUpstreams(&c.Dispenser)
if err != nil {
return middleware.Error("proxy", err)
}
t := dnsserver.GetConfig(c).Handler("trace")
P := &Proxy{Trace: t}
dnsserver.GetConfig(c).AddMiddleware(func(next middleware.Handler) middleware.Handler {
P.Next = next
P.Upstreams = &upstreams
return P
})
c.OnStartup(OnStartupMetrics)
for _, u := range upstreams {
c.OnStartup(func() error {
return u.Exchanger().OnStartup(P)
})
c.OnShutdown(func() error {
return u.Exchanger().OnShutdown(P)
})
// Register shutdown handlers.
c.OnShutdown(u.Stop)
}
return nil
}