Use Docker for running Helm

WyriHaximus · Aug 1, 2021 · d79de3f · d79de3f
1 parent c7fc7ff
commit d79de3f
Showing 1 changed file with 37 additions and 4 deletions.
diff --git a/main.js b/main.js
@@ -5,6 +5,8 @@ async function main() {
     const tmp = require('tmp');
     const {waitFile} = require('wait-file');
 
+    console.log("\033[36mPWD: " + process.cwd() + "\033[0m");
+
     tmp.setGracefulCleanup();
 
     const execShFile = tmp.fileSync({
@@ -13,6 +15,15 @@ async function main() {
         postfix: '.sh',
         discardDescriptor: true,
     });
+    const dockerKubeConfigDir = process.cwd() + '/docker-kube-config-' + Math.random().toString(36).replace(/[^a-z]+/g, '').substr(0, 13);
+    fs.mkdirSync(dockerKubeConfigDir, {
+        mode: 0o777,
+    });
+    const dockerKubeConfig = dockerKubeConfigDir + '/config';
+    const helmCacheDir = process.cwd() + '/helm-cache-' + Math.random().toString(36).replace(/[^a-z]+/g, '').substr(0, 13);
+    fs.mkdirSync(helmCacheDir, {
+        mode: 0o744,
+    });
 
     const kubeConfigLocation = homedir + '/.kube/config';
     const kubeConfigExists = fs.existsSync(kubeConfigLocation);
@@ -25,15 +36,37 @@ async function main() {
         });
         fs.appendFileSync(
             kubeConfigLocation,
-            "\r\n\r\n" + process.env.INPUT_KUBECONFIG,
+            "\r\n\r\n" + process.env.INPUT_KUBECONFIG + "\r\n\r\n",
             {
-                mode: 0o600,
+                mode: 0o644,
             }
         );
     }
 
+    fs.writeFileSync(
+        dockerKubeConfig,
+        fs.readFileSync(kubeConfigLocation),
+        {
+            mode: 0o777,
+        }
+    );
     console.log("\033[36mPreparing helm execution\033[0m");
-    fs.appendFileSync(execShFile.name, process.env.INPUT_EXEC);
+    fs.appendFileSync(
+        execShFile.name,
+        '#!/usr/bin/env bash\n' +
+        ' \n' +
+        'kubectl () {\n' +
+        '    docker run --network host --rm -v ' + process.cwd() + ':' + process.cwd() + ' -w ' + process.cwd() + ' -v ' + dockerKubeConfigDir + ':' + dockerKubeConfigDir + ' -e KUBECONFIG=' + dockerKubeConfig + ' rancher/kubectl:v1.20.2 "$@"\n' +
+        '}\n' +
+        'helm () {\n' +
+        '    docker run --network host --rm -v ' + process.cwd() + ':' + process.cwd() + ' -w ' + process.cwd() + ' -v ' + dockerKubeConfigDir + ':' + dockerKubeConfigDir + ' -e KUBECONFIG=' + dockerKubeConfig + ' -v ' + helmCacheDir + 'cache:/root/.cache/helm -v ' + helmCacheDir + 'config:/root/.config/helm -v ' + helmCacheDir + 'local:/root/.local/share/helm alpine/helm:3.6.3 "$@"\n' +
+        '}\n' +
+        ' \n' +
+        'docker pull -q rancher/kubectl:v1.20.2 > /dev/null 2>&1\n' +
+        'docker pull -q alpine/helm:3.6.3 > /dev/null 2>&1\n' +
+        ' \n' +
+        process.env.INPUT_EXEC
+    );
 
     await waitFile({
         resources: [
@@ -61,11 +94,11 @@ async function main() {
         });
         console.log('::set-output name=helm_output::' + result.split('%').join('%25').split('\n').join('%0A').split('\r').join('%0D'));
     } catch (error) {
-        console.error(error);
         process.exit(1);
     } finally {
         console.log("\033[36mCleaning up: \033[0m");
         fs.unlinkSync(execShFile.name);
+        fs.unlinkSync(dockerKubeConfig);
         console.log("\033[36m  - exec ✅ \033[0m");
         if (!kubeConfigExists) {
             fs.unlinkSync(kubeConfigLocation);