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add retries for stackdriver exporters in go

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Signed-off-by: Ahmet Alp Balkan <ahmetb@google.com>
This commit is contained in:
Ahmet Alp Balkan 2018-07-13 15:44:56 -07:00
parent d01f525453
commit d08a58cc21
4 changed files with 96 additions and 61 deletions
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27
src/checkoutservice/main.go
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@ -6,6 +6,7 @@ import (
"log"
"net"
"os"
"time"
"github.com/google/uuid"
"go.opencensus.io/exporter/stackdriver"
@ -39,7 +40,7 @@ func main() {
port = os.Getenv("PORT")
}
initTracing()
go initTracing()
svc := new(checkoutService)
mustMapEnv(&svc.shippingSvcAddr, "SHIPPING_SERVICE_ADDR")
@ -62,15 +63,23 @@ func main() {
}
func initTracing() {
exporter, err := stackdriver.NewExporter(stackdriver.Options{})
if err != nil {
log.Printf("failed to initialize stackdriver exporter: %+v", err)
log.Println("skipping uploading traces to stackdriver")
} else {
trace.RegisterExporter(exporter)
trace.ApplyConfig(trace.Config{DefaultSampler: trace.AlwaysSample()})
log.Println("registered stackdriver tracing")
// TODO(ahmetb) this method is duplicated in other microservices using Go
// since they are not sharing packages.
for i := 1; i <= 3; i++ {
exporter, err := stackdriver.NewExporter(stackdriver.Options{})
if err != nil {
log.Printf("info: failed to initialize stackdriver exporter: %+v", err)
} else {
trace.RegisterExporter(exporter)
trace.ApplyConfig(trace.Config{DefaultSampler: trace.AlwaysSample()})
log.Print("registered stackdriver tracing")
return
}
d := time.Second * 10 * time.Duration(i)
log.Printf("sleeping %v to retry initializing stackdriver exporter", d)
time.Sleep(d)
}
log.Printf("warning: could not initialize stackdriver exporter after retrying, giving up")
}
func mustMapEnv(target *string, envKey string) {