nsc auth: introduce generate-dev-token to generate short-lived tokens…

… for development

fixes BKC-56

internal/cli/cmd/auth/cmd.go

@@ -19,6 +19,7 @@ func NewAuthCmd() *cobra.Command {
 	cmd.AddCommand(newTrustAwsCognitoCmd())
 	cmd.AddCommand(NewIssueIdTokenCmd())
 	cmd.AddCommand(NewExchangeOIDCTokenCmd())
+	cmd.AddCommand(NewGenerateDevTokenCmd())
 
 	return cmd
 }

internal/cli/cmd/auth/devtoken.go

@@ -0,0 +1,46 @@
+// Copyright 2022 Namespace Labs Inc; All rights reserved.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+
+package auth
+
+import (
+	"context"
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+	"namespacelabs.dev/foundation/internal/cli/fncobra"
+	"namespacelabs.dev/foundation/internal/console"
+	"namespacelabs.dev/foundation/internal/fnapi"
+	"namespacelabs.dev/foundation/internal/fnerrors"
+)
+
+func NewGenerateDevTokenCmd() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:    "generate-dev-token",
+		Short:  "Generate a Namespace Cloud token for development purposes.",
+		Args:   cobra.NoArgs,
+		Hidden: true,
+	}
+
+	outputPath := cmd.Flags().String("output_to", "", "If specified, write the access token to this path.")
+
+	return fncobra.Cmd(cmd).Do(func(ctx context.Context) error {
+		res, err := fnapi.IssueDevelopmentToken(ctx)
+		if err != nil {
+			return err
+		}
+
+		if *outputPath != "" {
+			if err := os.WriteFile(*outputPath, []byte(res.DevelopmentToken), 0644); err != nil {
+				return fnerrors.New("failed to write %q: %w", *outputPath, err)
+			}
+
+			return nil
+		}
+
+		fmt.Fprintln(console.Stdout(ctx), res.DevelopmentToken)
+		return nil
+	})
+}

internal/fnapi/tenants.go

@@ -74,6 +74,10 @@ type IssueIngressAccessTokenResponse struct {
 	IngressAccessToken string `json:"ingress_access_token,omitempty"`
 }
 
+type IssueDevelopmentTokenResponse struct {
+	DevelopmentToken string `json:"development_token,omitempty"`
+}
+
 type Tenant struct {
 	TenantId      string `json:"tenant_id,omitempty"`
 	Name          string `json:"name,omitempty"`
@@ -153,6 +157,17 @@ func IssueIngressAccessToken(ctx context.Context, instanceId string) (IssueIngre
 	return res, nil
 }
 
+func IssueDevelopmentToken(ctx context.Context) (IssueDevelopmentTokenResponse, error) {
+	req := struct{}{}
+
+	var res IssueDevelopmentTokenResponse
+	if err := AuthenticatedCall(ctx, EndpointAddress, "nsl.tenants.TenantsService/IssueDevelopmentToken", req, DecodeJSONResponse(&res)); err != nil {
+		return IssueDevelopmentTokenResponse{}, err
+	}
+
+	return res, nil
+}
+
 type TokenClaims struct {
 	TenantID      string `json:"tenant_id"`
 	InstanceID    string `json:"instance_id"`