支持数据授权管理功能

cmd/saastool/grant.go

@@ -0,0 +1,46 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"strings"
+)
+
+func RunGrant(args ...string) error {
+	name, args := ParseCommandName(args)
+
+	// 从参数中解析出命令
+	switch name {
+	case "", "help":
+		return RunGrantHelp(args...)
+	case "list":
+		return RunGrantList(args...)
+	case "add":
+		return RunGrantAdd(args...)
+	case "delete":
+		return RunGrantDelete(args...)
+	default:
+		err := fmt.Errorf(`unknown command "%s"`+"\n"+`Run 'saastool grant help' for usage`, name)
+		fmt.Fprintln(os.Stderr, err)
+
+		return err
+	}
+}
+
+func RunGrantHelp(args ...string) error {
+	fmt.Println(strings.TrimSpace(grantUsage))
+	return nil
+}
+
+const grantUsage = `
+Usage:  saastool grant COMMAND [OPTIONS]
+
+Commands:
+    list                 List data grants
+    add                  Add data grant
+    delete               Delete data grant
+
+"help" is the default command.
+
+Use "saastool grant COMMAND -help" for more information about a command.
+`