worker: Command to print resource-table env vars

cmd/lotus-seal-worker/main.go

@@ -60,6 +60,7 @@ func main() {
 		storageCmd,
 		setCmd,
 		waitQuietCmd,
+		resourcesCmd,
 		tasksCmd,
 	}
 

cmd/lotus-seal-worker/resources.go

@@ -0,0 +1,72 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"sort"
+
+	"github.com/urfave/cli/v2"
+
+	"github.com/filecoin-project/lotus/extern/sector-storage/storiface"
+)
+
+var resourcesCmd = &cli.Command{
+	Name:  "resources",
+	Usage: "Manage resource table overrides",
+	Flags: []cli.Flag{
+		&cli.BoolFlag{
+			Name:  "all",
+			Usage: "print all resource envvars",
+		},
+		&cli.BoolFlag{
+			Name:  "default",
+			Usage: "print all resource envvars",
+		},
+	},
+	Action: func(cctx *cli.Context) error {
+		def := map[string]string{}
+		set := map[string]string{}
+		all := map[string]string{}
+
+		_, err := storiface.ParseResourceEnv(func(key, d string) (string, bool) {
+			if d != "" {
+				all[key] = d
+				def[key] = d
+			}
+
+			s, ok := os.LookupEnv(key)
+			if ok {
+				all[key] = s
+				set[key] = s
+			}
+
+			return s, ok
+		})
+		if err != nil {
+			return err
+		}
+
+		printMap := func(m map[string]string) {
+			var arr []string
+			for k, v := range m {
+				arr = append(arr, fmt.Sprintf("%s=%s", k, v))
+			}
+			sort.Strings(arr)
+			for _, s := range arr {
+				fmt.Println(s)
+			}
+		}
+
+		if cctx.Bool("default") {
+			printMap(def)
+		} else {
+			if cctx.Bool("all") {
+				printMap(all)
+			} else {
+				printMap(set)
+			}
+		}
+
+		return nil
+	},
+}

documentation/en/cli-lotus-worker.md

@@ -15,6 +15,7 @@ COMMANDS:
    storage     manage sector storage
    set         Manage worker settings
    wait-quiet  Block until all running tasks exit
+   resources   Manage resource table overrides
    tasks       Manage task processing
    help, h     Shows a list of commands or help for one command
 
@@ -127,6 +128,21 @@ OPTIONS:
    
 ```
 
+## lotus-worker resources
+```
+NAME:
+   lotus-worker resources - Manage resource table overrides
+
+USAGE:
+   lotus-worker resources [command options] [arguments...]
+
+OPTIONS:
+   --all       print all resource envvars (default: false)
+   --default   print all resource envvars (default: false)
+   --help, -h  show help (default: false)
+   
+```
+
 ## lotus-worker tasks
 ```
 NAME: