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relay.go
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relay.go
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package relay
import (
"fmt"
"sync"
log "github.com/golang/glog"
)
type Service struct {
relays map[string]Relay
}
func New(config Config) (*Service, error) {
s := new(Service)
s.relays = make(map[string]Relay)
for _, cfg := range config.HTTPRelays {
h, err := NewHTTP(cfg)
if err != nil {
return nil, err
}
if s.relays[h.Name()] != nil {
return nil, fmt.Errorf("duplicate relay: %q", h.Name())
}
s.relays[h.Name()] = h
}
for _, cfg := range config.UDPRelays {
u, err := NewUDP(cfg)
if err != nil {
return nil, err
}
if s.relays[u.Name()] != nil {
return nil, fmt.Errorf("duplicate relay: %q", u.Name())
}
s.relays[u.Name()] = u
}
for _, cfg := range config.BeringeiRelays {
b, err := NewBeringei(cfg)
if err != nil {
return nil, err
}
if s.relays[b.Name()] != nil {
return nil, fmt.Errorf("duplicate relay: %q", b.Name())
}
s.relays[b.Name()] = b
}
for _, cfg := range config.GraphiteRelays {
g, err := NewGraphiteRelay(cfg)
if err != nil {
return nil, err
}
if s.relays[g.Name()] != nil {
return nil, fmt.Errorf("duplicate relay: %q", g.Name())
}
s.relays[g.Name()] = g
}
return s, nil
}
func (s *Service) Run() {
var wg sync.WaitGroup
wg.Add(len(s.relays))
for k := range s.relays {
relay := s.relays[k]
go func() {
defer wg.Done()
if err := relay.Run(); err != nil {
log.Error("Error running relay %q: %v", relay.Name(), err)
}
}()
}
wg.Wait()
}
func (s *Service) Stop() {
for _, v := range s.relays {
v.Stop()
}
}
type Relay interface {
Name() string
Run() error
Stop() error
}