chore: import upstream snapshot with attribution

cmd/micro/resource/resource.go

@@ -0,0 +1,52 @@
+// Package resource provides CLI commands that map directly onto
+// go-micro's core interfaces — registry, broker, store, and config.
+//
+// Each interface gets its own top-level command with verbs that mirror
+// the interface methods, so the framework's building blocks are
+// inspectable and manipulable from the terminal:
+//
+//	micro registry list
+//	micro broker publish <topic> <message>
+//	micro store read <key>
+//	micro config get <key>
+//
+// New resource commands are registered by appending to the commands
+// slice in init — see registry.go, broker.go, store.go, config.go for
+// the per-interface implementations.
+package resource
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+
+	"github.com/urfave/cli/v2"
+	"go-micro.dev/v6/cmd"
+)
+
+// commandFunc returns a cli.Command for a single core interface. Add a
+// new one here to expose another package on the CLI.
+var commandFuncs = []func() *cli.Command{
+	registryCommand,
+	brokerCommand,
+	storeCommand,
+	configCommand,
+}
+
+func init() {
+	for _, fn := range commandFuncs {
+		cmd.Register(fn())
+	}
+}
+
+// printJSON writes v as indented JSON to stdout.
+func printJSON(v any) error {
+	enc := json.NewEncoder(os.Stdout)
+	enc.SetIndent("", "  ")
+	return enc.Encode(v)
+}
+
+// fail returns a cli error with a consistent prefix.
+func fail(format string, args ...any) error {
+	return cli.Exit(fmt.Sprintf(format, args...), 1)
+}