Add post run that prints VM output

action.yml

@@ -58,6 +58,7 @@ inputs:
 runs:
   using: node20
   main: dist/index.js
+  post: dist/post.mjs
 
 branding:
   icon: play-circle

changelog.md

@@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 ### Added
 - Add support for FreeBSD 14.0 ([#74](https://github.com/cross-platform-actions/action/issues/74))
+- Add post run step that prints the VM output
 
 ### Fixed
 - OpenBSD VM fails during "Initializing VM" with QEMU on macOS ([#73](https://github.com/cross-platform-actions/action/issues/73))

package.json

@@ -9,7 +9,9 @@
     "format": "prettier --write '**/*.ts'",
     "format-check": "prettier --check '**/*.ts'",
     "lint": "eslint src/**/*.ts",
-    "package": "ncc build --source-map --license licenses.txt",
+    "package": "npm run package:main && npm run package:post",
+    "package:main": "ncc build --source-map --license licenses.txt",
+    "package:post": "cp post/main.mjs dist/post.mjs",
     "test": "jasmine",
     "all": "npm run build && npm run format && npm run lint && npm run package && npm test"
   },

post/main.mjs

@@ -0,0 +1,5 @@
+import {existsSync} from 'fs'
+import {spawnSync} from 'child_process'
+
+if (existsSync('/tmp/cross-platform-actions.log'))
+  spawnSync('sudo', ['cat', '/tmp/cross-platform-actions.log'], {stdio: 'inherit'})

src/qemu_vm.ts

@@ -45,6 +45,7 @@ export abstract class Vm extends vm.Vm {
 
       '-display', 'none',
       '-monitor', 'none',
+      '-serial', `file:${this.logFile}`,
       // '-nographic',
 
       '-boot', 'strict=off',

src/vm.ts

@@ -65,6 +65,7 @@ export abstract class Vm {
   private static _isRunning?: boolean
 
   readonly hypervisorPath: fs.PathLike
+  protected readonly logFile: fs.PathLike = '/tmp/cross-platform-actions.log'
   protected vmProcess: Process = new LiveProcess()
   protected readonly architecture: architecture.Architecture
   protected readonly configuration: vm.Configuration