func (s *Server) appendGraphiteService(c graphite.Config) error {
if !c.Enabled {
return nil
}
srv, err := graphite.NewService(c)
if err != nil {
return err
}
srv.PointsWriter = s.PointsWriter
srv.MetaClient = s.MetaClient
srv.Monitor = s.Monitor
s.Services = append(s.Services, srv)
return nil
}
func (s *Server) appendGraphiteServices() error {
for i, c := range s.config.Graphites {
if !c.Enabled {
continue
}
srv, err := graphite.NewService(c)
if err != nil {
return errors.Wrap(err, "creating new graphite service")
}
w := s.LogService.NewStaticLevelWriter(logging.INFO)
srv.SetLogOutput(w)
srv.PointsWriter = s.TaskMaster
srv.MetaClient = s.MetaClient
s.AppendService(fmt.Sprintf("graphite%d", i), srv)
}
return nil
}
func Test_ServerGraphiteUDP(t *testing.T) {
t.Parallel()
now := time.Now().UTC().Round(time.Second)
config := graphite.Config{}
config.Database = "graphitedb"
config.BatchSize = 0 // No batching.
config.BatchTimeout = toml.Duration(time.Second)
config.BindAddress = ":10000"
config.Protocol = "udp"
service, err := graphite.NewService(config)
if err != nil {
t.Fatalf("failed to create Graphite service: %s", err.Error())
}
// Allow test to wait until points are written.
var wg sync.WaitGroup
wg.Add(1)
pointsWriter := PointsWriter{
WritePointsFn: func(req *cluster.WritePointsRequest) error {
defer wg.Done()
pt, _ := models.NewPoint(
"cpu",
map[string]string{},
map[string]interface{}{"value": 23.456},
time.Unix(now.Unix(), 0))
if req.Database != "graphitedb" {
t.Fatalf("unexpected database: %s", req.Database)
} else if req.RetentionPolicy != "" {
t.Fatalf("unexpected retention policy: %s", req.RetentionPolicy)
} else if req.Points[0].String() != pt.String() {
t.Fatalf("unexpected points: %#v", req.Points[0].String())
}
return nil
},
}
service.PointsWriter = &pointsWriter
dbCreator := DatabaseCreator{}
service.MetaClient = &dbCreator
if err := service.Open(); err != nil {
t.Fatalf("failed to open Graphite service: %s", err.Error())
}
if !dbCreator.Created {
t.Fatalf("failed to create target database")
}
// Connect to the graphite endpoint we just spun up
_, port, _ := net.SplitHostPort(service.Addr().String())
conn, err := net.Dial("udp", "127.0.0.1:"+port)
if err != nil {
t.Fatal(err)
}
data := []byte(`cpu 23.456 `)
data = append(data, []byte(fmt.Sprintf("%d", now.Unix()))...)
data = append(data, '\n')
_, err = conn.Write(data)
if err != nil {
t.Fatal(err)
}
wg.Wait()
conn.Close()
}