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Chris LuandGitHub
7df43ad9b5
* admin: add connected mount clients page and dashboard section
The filer is the authority on who is subscribed to its metadata stream
(FUSE/VFS mounts, S3, peer filers, ...), but its in-memory listener
registry only tracked clientId->epoch and was not exposed.
- Enrich the filer subscriber registry with name/type/address/path/
connected-time, populated in addClient and cleared in deleteClient so
it reflects currently-connected clients only.
- Add a ListMetadataSubscribers filer gRPC (optional client-type filter).
- Admin server fans out to every filer, filters to mount types
("mount" Go weed mount, "sw-vfs" Rust VFS), and renders a new
Cluster > Mount Clients page plus a Mount Clients dashboard section.
Read-only; no behavior change to the subscribe hot path.
* admin: address review — parallelize filer fan-out, guard nil map, robust CSV
- GetMountClients now queries filers concurrently, each under a 5s
timeout, so a slow/unreachable filer can't stall the admin dashboard.
- Defensively initialize fs.subscribers before first write.
- Mount Clients CSV export uses a Blob with quote-escaping instead of a
data: URI, so special characters in paths export correctly.
64 lines
2.1 KiB
Go
64 lines
2.1 KiB
Go
package weed_server
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import (
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"context"
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"sort"
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"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
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)
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// metadataSubscriber is the live record of one connected metadata subscriber
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// (a FUSE mount, S3, filer.sync, peer filer, ...). It is created in addClient
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// and removed in deleteClient, so the registry reflects currently-connected
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// clients only. Guarded by FilerServer.knownListenersLock.
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type metadataSubscriber struct {
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clientName string // "<type>@<address>"
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clientType string // e.g. "mount", "sw-vfs", "s3", "filer:<addr>"
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address string
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pathPrefix string
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clientId int32
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clientEpoch int32
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connectedAtNs int64
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}
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// ListMetadataSubscribers returns the metadata subscribers currently connected
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// to this filer, optionally filtered by client type. Each filer only knows its
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// own subscribers, so cluster-wide callers query every filer and aggregate.
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func (fs *FilerServer) ListMetadataSubscribers(ctx context.Context, req *filer_pb.ListMetadataSubscribersRequest) (*filer_pb.ListMetadataSubscribersResponse, error) {
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typeFilter := make(map[string]bool, len(req.ClientTypes))
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for _, t := range req.ClientTypes {
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typeFilter[t] = true
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}
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filerAddress := string(fs.option.Host)
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fs.knownListenersLock.Lock()
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subs := make([]*filer_pb.MetadataSubscriber, 0, len(fs.subscribers))
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for _, s := range fs.subscribers {
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if len(typeFilter) > 0 && !typeFilter[s.clientType] {
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continue
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}
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subs = append(subs, &filer_pb.MetadataSubscriber{
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ClientName: s.clientName,
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ClientType: s.clientType,
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Address: s.address,
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PathPrefix: s.pathPrefix,
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ClientId: s.clientId,
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ClientEpoch: s.clientEpoch,
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ConnectedAtNs: s.connectedAtNs,
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FilerAddress: filerAddress,
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})
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}
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fs.knownListenersLock.Unlock()
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// Stable ordering so the admin page doesn't shuffle rows between refreshes.
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sort.Slice(subs, func(i, j int) bool {
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if subs[i].ClientName != subs[j].ClientName {
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return subs[i].ClientName < subs[j].ClientName
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}
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return subs[i].PathPrefix < subs[j].PathPrefix
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})
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return &filer_pb.ListMetadataSubscribersResponse{Subscribers: subs}, nil
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}
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