fix: change tape error

apis/job_get_log.go

@@ -17,8 +17,8 @@ func (api *API) JobGetLog(ctx context.Context, req *entity.JobGetLogRequest) (*e
 		return &entity.JobGetLogReply{Logs: []byte{}}, nil
 	}
 
-	if req.Offset > 0 {
-		if _, err := reader.Seek(req.Offset, 0); err != nil {
+	if req.Offset != nil {
+		if _, err := reader.Seek(*req.Offset, 0); err != nil {
 			return nil, fmt.Errorf("seek log file fail, offset= %d, %w", req.Offset, err)
 		}
 	}

cmd/tape-httpd/main.go

@@ -9,6 +9,7 @@ import (
 	"log"
 	"net/http"
 	"os"
+	"time"
 
 	"github.com/abc950309/tapewriter/apis"
 	"github.com/abc950309/tapewriter/entity"
@@ -17,6 +18,7 @@ import (
 	"github.com/abc950309/tapewriter/resource"
 	"github.com/abc950309/tapewriter/tools"
 	"github.com/improbable-eng/grpc-web/go/grpcweb"
+	"github.com/sirupsen/logrus"
 	"google.golang.org/grpc"
 	"gopkg.in/yaml.v2"
 )
@@ -110,6 +112,15 @@ func main() {
 		Addr:    conf.Listen,
 	}
 
+	go func() {
+		<-tools.ShutdownContext.Done()
+		logrus.Infof("Graceful shutdown, wait for working process")
+		start := time.Now()
+		tools.Wait()
+		logrus.Infof("Graceful shutdown, wait done, duration= %s", time.Since(start))
+		srv.Shutdown(context.Background())
+	}()
+
 	log.Printf("http server listening at %v", srv.Addr)
 	if err := srv.ListenAndServe(); err != nil {
 		log.Fatalf("failed to serve: %v", err)

entity/job_archive.proto

@@ -46,4 +46,5 @@ message JobDisplayArchive {
     int64 totalFiles = 4;
 
     optional int64 speed = 5;
+    int64 startTime = 6;
 }