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93 lines
2.8 KiB
93 lines
2.8 KiB
package dash
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import (
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"context"
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"fmt"
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"time"
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"github.com/seaweedfs/seaweedfs/weed/cluster"
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"github.com/seaweedfs/seaweedfs/weed/glog"
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"github.com/seaweedfs/seaweedfs/weed/operation"
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"github.com/seaweedfs/seaweedfs/weed/pb"
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"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
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"github.com/seaweedfs/seaweedfs/weed/pb/master_pb"
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"github.com/seaweedfs/seaweedfs/weed/pb/volume_server_pb"
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)
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// WithMasterClient executes a function with a master client connection
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func (s *AdminServer) WithMasterClient(f func(client master_pb.SeaweedClient) error) error {
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return s.masterClient.WithClient(false, f)
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}
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// WithFilerClient executes a function with a filer client connection
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func (s *AdminServer) WithFilerClient(f func(client filer_pb.SeaweedFilerClient) error) error {
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filerAddr := s.GetFilerAddress()
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if filerAddr == "" {
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return fmt.Errorf("no filer available")
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}
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return pb.WithGrpcFilerClient(false, 0, pb.ServerAddress(filerAddr), s.grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
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return f(client)
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})
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}
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// WithVolumeServerClient executes a function with a volume server client connection
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func (s *AdminServer) WithVolumeServerClient(address pb.ServerAddress, f func(client volume_server_pb.VolumeServerClient) error) error {
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return operation.WithVolumeServerClient(false, address, s.grpcDialOption, func(client volume_server_pb.VolumeServerClient) error {
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return f(client)
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})
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}
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// GetFilerAddress returns a filer address, discovering from masters if needed
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func (s *AdminServer) GetFilerAddress() string {
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// Discover filers from masters
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filers := s.getDiscoveredFilers()
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if len(filers) > 0 {
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return filers[0] // Return the first available filer
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}
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return ""
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}
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// getDiscoveredFilers returns cached filers or discovers them from masters
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func (s *AdminServer) getDiscoveredFilers() []string {
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// Check if cache is still valid
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if time.Since(s.lastFilerUpdate) < s.filerCacheExpiration && len(s.cachedFilers) > 0 {
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return s.cachedFilers
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}
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// Discover filers from masters
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var filers []string
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err := s.WithMasterClient(func(client master_pb.SeaweedClient) error {
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resp, err := client.ListClusterNodes(context.Background(), &master_pb.ListClusterNodesRequest{
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ClientType: cluster.FilerType,
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})
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if err != nil {
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return err
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}
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for _, node := range resp.ClusterNodes {
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filers = append(filers, node.Address)
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}
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return nil
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})
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if err != nil {
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currentMaster := s.masterClient.GetMaster(context.Background())
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glog.Warningf("Failed to discover filers from master %s: %v", currentMaster, err)
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// Return cached filers even if expired, better than nothing
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return s.cachedFilers
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}
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// Update cache
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s.cachedFilers = filers
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s.lastFilerUpdate = time.Now()
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return filers
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}
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// GetAllFilers returns all discovered filers
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func (s *AdminServer) GetAllFilers() []string {
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return s.getDiscoveredFilers()
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}
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