stream read multiple volumes in a volume server

unmaintained/stream_read_volume/stream_read_volume.go

@@ -0,0 +1,64 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"flag"
+	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/operation"
+	"github.com/chrislusf/seaweedfs/weed/pb"
+	"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
+	"github.com/chrislusf/seaweedfs/weed/security"
+	"github.com/chrislusf/seaweedfs/weed/util"
+	"google.golang.org/grpc"
+	"io"
+)
+
+var (
+	volumeServer       = flag.String("volumeServer", "localhost:8080", "a volume server")
+	volumeId         = flag.Int("volumeId", -1, "a volume id to stream read")
+	grpcDialOption   grpc.DialOption
+)
+
+func main() {
+	flag.Parse()
+
+	util.LoadConfiguration("security", false)
+	grpcDialOption = security.LoadClientTLS(util.GetViper(), "grpc.client")
+
+	vid := uint32(*volumeId)
+
+	eachNeedleFunc := func(resp *volume_server_pb.ReadAllNeedlesResponse) error {
+		fmt.Printf("%d,%x%08x %d\n", resp.VolumeId, resp.NeedleId, resp.Cookie, len(resp.NeedleBlob))
+		return nil
+	}
+
+	err := operation.WithVolumeServerClient(pb.ServerAddress(*volumeServer), grpcDialOption, func(vs volume_server_pb.VolumeServerClient) error {
+		ctx, cancel := context.WithCancel(context.Background())
+		defer cancel()
+		copyFileClient, err := vs.ReadAllNeedles(ctx, &volume_server_pb.ReadAllNeedlesRequest{
+			VolumeIds:           []uint32{vid},
+		})
+		if err != nil {
+			return err
+		}
+		for {
+			resp, err := copyFileClient.Recv()
+			if errors.Is(err, io.EOF) {
+				break
+			}
+			if err != nil {
+				return err
+			}
+			if err = eachNeedleFunc(resp); err != nil {
+				return err
+			}
+		}
+		return nil
+	})
+	if err != nil {
+		fmt.Printf("read %s: %v\n", *volumeServer, err)
+	}
+
+}
+