snapshot of https://github.com/seaweedfs/seaweedfs.git (master, 2026-09-16; blobs > 131072B omitted)

weed/admin/dash/mount_clients.go

@@ -0,0 +1,80 @@
+package dash
+
+import (
+	"context"
+	"sort"
+	"sync"
+	"time"
+
+	"github.com/seaweedfs/seaweedfs/weed/glog"
+	"github.com/seaweedfs/seaweedfs/weed/pb"
+	"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
+)
+
+// mountClientTypes are the metadata-subscriber client types that represent a
+// FUSE/VFS mount: the Go `weed mount` ("mount") and the Rust VFS ("sw-vfs").
+var mountClientTypes = []string{"mount", "sw-vfs"}
+
+// mountClientsFilerTimeout bounds each per-filer ListMetadataSubscribers call so
+// a slow or unreachable filer can't stall the admin dashboard.
+const mountClientsFilerTimeout = 5 * time.Second
+
+// GetMountClients queries every filer for its connected mount subscribers and
+// aggregates them. Each filer only knows the clients connected to itself, so a
+// cluster-wide view requires fanning out. The filers are queried concurrently,
+// each under a short timeout, and an unreachable filer is skipped.
+func (s *AdminServer) GetMountClients() (*MountClientsData, error) {
+	var (
+		mu      sync.Mutex
+		clients []MountClient
+		wg      sync.WaitGroup
+	)
+
+	for _, filerAddr := range s.GetAllFilers() {
+		wg.Add(1)
+		go func(filerAddr string) {
+			defer wg.Done()
+			ctx, cancel := context.WithTimeout(context.Background(), mountClientsFilerTimeout)
+			defer cancel()
+			err := pb.WithGrpcFilerClient(false, 0, pb.ServerAddress(filerAddr), s.grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
+				resp, err := client.ListMetadataSubscribers(ctx, &filer_pb.ListMetadataSubscribersRequest{
+					ClientTypes: mountClientTypes,
+				})
+				if err != nil {
+					return err
+				}
+				mu.Lock()
+				for _, sub := range resp.Subscribers {
+					clients = append(clients, MountClient{
+						ClientName:   sub.ClientName,
+						ClientType:   sub.ClientType,
+						Address:      sub.Address,
+						PathPrefix:   sub.PathPrefix,
+						ClientId:     sub.ClientId,
+						ConnectedAt:  time.Unix(0, sub.ConnectedAtNs),
+						FilerAddress: sub.FilerAddress,
+					})
+				}
+				mu.Unlock()
+				return nil
+			})
+			if err != nil {
+				glog.Warningf("list mount clients from filer %s: %v", filerAddr, err)
+			}
+		}(filerAddr)
+	}
+	wg.Wait()
+
+	sort.Slice(clients, func(i, j int) bool {
+		if clients[i].Address != clients[j].Address {
+			return clients[i].Address < clients[j].Address
+		}
+		return clients[i].PathPrefix < clients[j].PathPrefix
+	})
+
+	return &MountClientsData{
+		MountClients:      clients,
+		TotalMountClients: len(clients),
+		LastUpdated:       time.Now(),
+	}, nil
+}