From dc0bc91665d1241957aa2acbb57921b8aac24748 Mon Sep 17 00:00:00 2001
From: Giulio Micheloni <giulio@namespacelabs.com>
Date: Mon, 8 May 2023 20:15:54 +0200
Subject: [PATCH] main: no-op if builder is already set

---
 dist/main/index.js | 40 +++++++++++++++++++++++++++++++++++++++-
 main.ts            | 19 ++++++++++++++++++-
 2 files changed, 57 insertions(+), 2 deletions(-)

diff --git a/dist/main/index.js b/dist/main/index.js
index 4f984fa..50074f5 100644
--- a/dist/main/index.js
+++ b/dist/main/index.js
@@ -4288,6 +4288,23 @@ module.exports = require("util");
 /******/ 	}
 /******/ 	
 /************************************************************************/
+/******/ 	/* webpack/runtime/define property getters */
+/******/ 	(() => {
+/******/ 		// define getter functions for harmony exports
+/******/ 		__nccwpck_require__.d = (exports, definition) => {
+/******/ 			for(var key in definition) {
+/******/ 				if(__nccwpck_require__.o(definition, key) && !__nccwpck_require__.o(exports, key)) {
+/******/ 					Object.defineProperty(exports, key, { enumerable: true, get: definition[key] });
+/******/ 				}
+/******/ 			}
+/******/ 		};
+/******/ 	})();
+/******/ 	
+/******/ 	/* webpack/runtime/hasOwnProperty shorthand */
+/******/ 	(() => {
+/******/ 		__nccwpck_require__.o = (obj, prop) => (Object.prototype.hasOwnProperty.call(obj, prop))
+/******/ 	})();
+/******/ 	
 /******/ 	/* webpack/runtime/make namespace object */
 /******/ 	(() => {
 /******/ 		// define __esModule on exports
@@ -4311,6 +4328,11 @@ var __webpack_exports__ = {};
 // ESM COMPAT FLAG
 __nccwpck_require__.r(__webpack_exports__);
 
+// EXPORTS
+__nccwpck_require__.d(__webpack_exports__, {
+  "nscRemoteBuilderName": () => (/* binding */ nscRemoteBuilderName)
+});
+
 // EXTERNAL MODULE: ./node_modules/@actions/core/lib/core.js
 var core = __nccwpck_require__(186);
 // EXTERNAL MODULE: ./node_modules/@actions/exec/lib/exec.js
@@ -4345,6 +4367,7 @@ var __awaiter = (undefined && undefined.__awaiter) || function (thisArg, _argume
 
 
 
+const nscRemoteBuilderName = "remote-nsc";
 function run() {
     return __awaiter(this, void 0, void 0, function* () {
         var commandExists = __nccwpck_require__(724);
@@ -4362,11 +4385,19 @@ Please add a step this step to your workflow's job definition:
 function prepareBuildx() {
     return __awaiter(this, void 0, void 0, function* () {
         try {
+            yield core.group(`Check if Namespace Cloud Remote Builder`, () => __awaiter(this, void 0, void 0, function* () {
+                const builderExists = yield remoteNscBuilderExists();
+                if (builderExists) {
+                    core.info(`
+GitHub runner is already configured to use Namespace Cloud build cluster.`);
+                    return;
+                }
+            }));
             const sock = tmpFile("buildkit-proxy.sock");
             yield core.group(`Proxy Buildkit from Namespace Cloud`, () => __awaiter(this, void 0, void 0, function* () {
                 yield ensureNscloudToken();
                 yield exec.exec(`nsc cluster proxy --kind=buildkit --cluster=build-cluster --sock_path=${sock} --background=${ProxyPidFile}`);
-                yield exec.exec(`docker buildx create --name remote-nsc --driver remote unix://${sock} --use`);
+                yield exec.exec(`docker buildx create --name ${nscRemoteBuilderName} --driver remote unix://${sock} --use`);
             }));
             yield core.group(`Builder`, () => __awaiter(this, void 0, void 0, function* () {
                 core.info("remote-nsc");
@@ -4391,6 +4422,13 @@ function ensureNscloudToken() {
         yield exec.exec("nsc auth exchange-github-token --ensure=5m");
     });
 }
+function remoteNscBuilderExists() {
+    return __awaiter(this, void 0, void 0, function* () {
+        const { stdout, stderr } = yield exec.getExecOutput(`docker buildx inspect ${nscRemoteBuilderName}`);
+        const builderNotFoundStr = `no builder "${nscRemoteBuilderName}" found`;
+        return !(stdout.includes(builderNotFoundStr) || stderr.includes(builderNotFoundStr));
+    });
+}
 run();
 
 })();
diff --git a/main.ts b/main.ts
index c7e0e7a..fd9a5c6 100644
--- a/main.ts
+++ b/main.ts
@@ -3,6 +3,8 @@ import * as exec from "@actions/exec";
 import * as fs from "fs";
 import { ProxyPidFile, tmpFile } from "./common";
 
+export const nscRemoteBuilderName = "remote-nsc";
+
 async function run(): Promise<void> {
 	var commandExists = require("command-exists");
 
@@ -19,6 +21,15 @@ Please add a step this step to your workflow's job definition:
 
 async function prepareBuildx(): Promise<void> {
 	try {
+		await core.group(`Check if Namespace Cloud Remote Builder`, async () => {
+			const builderExists = await remoteNscBuilderExists();
+			if (builderExists) {
+				core.info(`
+GitHub runner is already configured to use Namespace Cloud build cluster.`);
+				return;
+			}
+		});
+
 		const sock = tmpFile("buildkit-proxy.sock");
 
 		await core.group(`Proxy Buildkit from Namespace Cloud`, async () => {
@@ -29,7 +40,7 @@ async function prepareBuildx(): Promise<void> {
 			);
 
 			await exec.exec(
-				`docker buildx create --name remote-nsc --driver remote unix://${sock} --use`
+				`docker buildx create --name ${nscRemoteBuilderName} --driver remote unix://${sock} --use`
 			);
 		});
 
@@ -56,4 +67,10 @@ async function ensureNscloudToken() {
 	await exec.exec("nsc auth exchange-github-token --ensure=5m");
 }
 
+async function remoteNscBuilderExists(): Promise<boolean> {
+	const { stdout, stderr } = await exec.getExecOutput(`docker buildx inspect ${nscRemoteBuilderName}`);
+	const builderNotFoundStr = `no builder "${nscRemoteBuilderName}" found`;
+	return !(stdout.includes(builderNotFoundStr) || stderr.includes(builderNotFoundStr))
+}
+
 run();