cloudflared-mirror/vendor/github.com/coredns/coredns/core/dnsserver/onstartup.go

41 lines
955 B
Go

package dnsserver
import (
"fmt"
"sort"
)
// startUpZones creates the text that we show when starting up:
// grpc://example.com.:1055
// example.com.:1053 on 127.0.0.1
func startUpZones(protocol, addr string, zones map[string]*Config) string {
s := ""
keys := make([]string, len(zones))
i := 0
for k := range zones {
keys[i] = k
i++
}
sort.Strings(keys)
for _, zone := range keys {
// split addr into protocol, IP and Port
_, ip, port, err := SplitProtocolHostPort(addr)
if err != nil {
// this should not happen, but we need to take care of it anyway
s += fmt.Sprintln(protocol + zone + ":" + addr)
continue
}
if ip == "" {
s += fmt.Sprintln(protocol + zone + ":" + port)
continue
}
// if the server is listening on a specific address let's make it visible in the log,
// so one can differentiate between all active listeners
s += fmt.Sprintln(protocol + zone + ":" + port + " on " + ip)
}
return s
}