1 files changed, 118 insertions, 0 deletions
diff --git a/weed/admin/dash/cluster_topology.go b/weed/admin/dash/cluster_topology.go
new file mode 100644
index 000000000..3670220ad
--- /dev/null
+++ b/weed/admin/dash/cluster_topology.go
@@ -0,0 +1,118 @@
+package dash
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"github.com/seaweedfs/seaweedfs/weed/glog"
+	"github.com/seaweedfs/seaweedfs/weed/pb/master_pb"
+)
+
+// GetClusterTopology returns the current cluster topology with caching
+func (s *AdminServer) GetClusterTopology() (*ClusterTopology, error) {
+	now := time.Now()
+	if s.cachedTopology != nil && now.Sub(s.lastCacheUpdate) < s.cacheExpiration {
+		return s.cachedTopology, nil
+	}
+
+	topology := &ClusterTopology{
+		UpdatedAt: now,
+	}
+
+	// Use gRPC only
+	err := s.getTopologyViaGRPC(topology)
+	if err != nil {
+		glog.Errorf("Failed to connect to master server %s: %v", s.masterAddress, err)
+		return nil, fmt.Errorf("gRPC topology request failed: %v", err)
+	}
+
+	// Cache the result
+	s.cachedTopology = topology
+	s.lastCacheUpdate = now
+
+	return topology, nil
+}
+
+// getTopologyViaGRPC gets topology using gRPC (original method)
+func (s *AdminServer) getTopologyViaGRPC(topology *ClusterTopology) error {
+	// Get cluster status from master
+	err := s.WithMasterClient(func(client master_pb.SeaweedClient) error {
+		resp, err := client.VolumeList(context.Background(), &master_pb.VolumeListRequest{})
+		if err != nil {
+			glog.Errorf("Failed to get volume list from master %s: %v", s.masterAddress, err)
+			return err
+		}
+
+		if resp.TopologyInfo != nil {
+			// Process gRPC response
+			for _, dc := range resp.TopologyInfo.DataCenterInfos {
+				dataCenter := DataCenter{
+					ID:    dc.Id,
+					Racks: []Rack{},
+				}
+
+				for _, rack := range dc.RackInfos {
+					rackObj := Rack{
+						ID:    rack.Id,
+						Nodes: []VolumeServer{},
+					}
+
+					for _, node := range rack.DataNodeInfos {
+						// Calculate totals from disk infos
+						var totalVolumes int64
+						var totalMaxVolumes int64
+						var totalSize int64
+						var totalFiles int64
+
+						for _, diskInfo := range node.DiskInfos {
+							totalVolumes += diskInfo.VolumeCount
+							totalMaxVolumes += diskInfo.MaxVolumeCount
+
+							// Sum up individual volume information
+							for _, volInfo := range diskInfo.VolumeInfos {
+								totalSize += int64(volInfo.Size)
+								totalFiles += int64(volInfo.FileCount)
+							}
+						}
+
+						vs := VolumeServer{
+							ID:            node.Id,
+							Address:       node.Id,
+							DataCenter:    dc.Id,
+							Rack:          rack.Id,
+							PublicURL:     node.Id,
+							Volumes:       int(totalVolumes),
+							MaxVolumes:    int(totalMaxVolumes),
+							DiskUsage:     totalSize,
+							DiskCapacity:  totalMaxVolumes * int64(resp.VolumeSizeLimitMb) * 1024 * 1024,
+							LastHeartbeat: time.Now(),
+						}
+
+						rackObj.Nodes = append(rackObj.Nodes, vs)
+						topology.VolumeServers = append(topology.VolumeServers, vs)
+						topology.TotalVolumes += vs.Volumes
+						topology.TotalFiles += totalFiles
+						topology.TotalSize += totalSize
+					}
+
+					dataCenter.Racks = append(dataCenter.Racks, rackObj)
+				}
+
+				topology.DataCenters = append(topology.DataCenters, dataCenter)
+			}
+		}
+
+		return nil
+	})
+
+	return err
+}
+
+// InvalidateCache forces a refresh of cached data
+func (s *AdminServer) InvalidateCache() {
+	s.lastCacheUpdate = time.Time{}
+	s.cachedTopology = nil
+	s.lastFilerUpdate = time.Time{}
+	s.cachedFilers = nil
+}