workers: Basic monitoring tools

api/api_storage.go

@@ -113,6 +113,8 @@ type StorageMiner interface {
 
 	// WorkerConnect tells the node to connect to workers RPC
 	WorkerConnect(context.Context, string) error
+	WorkerStats(context.Context) (map[uint64]WorkerStats, error)
+
 	stores.SectorIndex
 
 	MarketImportDealData(ctx context.Context, propcid cid.Cid, path string) error

api/api_worker.go

@@ -35,3 +35,12 @@ type WorkerInfo struct {
 
 	Resources WorkerResources
 }
+
+type WorkerStats struct {
+	Info WorkerInfo
+
+	MemUsedMin uint64
+	MemUsedMax uint64
+	GpuUsed    bool
+	CpuUse     int
+}

api/apistruct/struct.go

@@ -182,6 +182,8 @@ type StorageMinerStruct struct {
 		SectorsUpdate func(context.Context, abi.SectorNumber, api.SectorState) error  `perm:"write"`
 
 		WorkerConnect        func(context.Context, string) error                                                                          `perm:"admin"` // TODO: worker perm
+		WorkerStats func(context.Context) (map[uint64]api.WorkerStats, error) `perm:"admin"`
+
 		StorageList          func(context.Context) (map[stores.ID][]stores.Decl, error)                                                   `perm:"admin"`
 		StorageLocal         func(context.Context) (map[stores.ID]string, error)                                                          `perm:"admin"`
 		StorageAttach        func(context.Context, stores.StorageInfo, stores.FsStat) error                                               `perm:"admin"`
@@ -658,6 +660,10 @@ func (c *StorageMinerStruct) WorkerConnect(ctx context.Context, url string) erro
 	return c.Internal.WorkerConnect(ctx, url)
 }
 
+func (c *StorageMinerStruct) WorkerStats(ctx context.Context) (map[uint64]api.WorkerStats, error) {
+	return c.Internal.WorkerStats(ctx)
+}
+
 func (c *StorageMinerStruct) StorageAttach(ctx context.Context, si stores.StorageInfo, st stores.FsStat) error {
 	return c.Internal.StorageAttach(ctx, si, st)
 }