Use logrus.

deliver/deriver.go

@@ -1,16 +1,15 @@
 package deliver
 
 import (
-	"fmt"
 	"net/http"
 	"net/url"
-	"os"
 	"time"
 
 	"github.com/RichardKnop/machinery/v1"
 	"github.com/RichardKnop/machinery/v1/log"
 	"github.com/go-redis/redis"
 	uuid "github.com/satori/go.uuid"
+	"github.com/sirupsen/logrus"
 	"github.com/yukimochi/Activity-Relay/models"
 )
 
@@ -68,7 +67,7 @@ func Entrypoint(g *models.RelayConfig, v string) error {
 	worker := machineryServer.NewWorker(workerID.String(), globalConfig.JobConcurrency())
 	err = worker.Launch()
 	if err != nil {
-		fmt.Fprintln(os.Stderr, err)
+		logrus.Error(err)
 	}
 
 	return nil

deliver/sender.go

@@ -11,6 +11,7 @@ import (
 	"time"
 
 	httpdate "github.com/Songmu/go-httpdate"
+	"github.com/sirupsen/logrus"
 	"github.com/yukimochi/httpsig"
 )
 
@@ -44,7 +45,7 @@ func sendActivity(inboxURL string, KeyID string, body []byte, publicKey *rsa.Pri
 	}
 	defer resp.Body.Close()
 
-	fmt.Println(inboxURL, resp.StatusCode)
+	logrus.Debug(inboxURL, resp.StatusCode)
 	if resp.StatusCode/100 != 2 {
 		return errors.New("Post " + inboxURL + ": " + resp.Status)
 	}