add pulumi cancel action

.github/workflows/workflow.yml

@@ -52,7 +52,7 @@ jobs:
     name: Dotnet ${{ matrix.command }} on ${{ matrix.os }}
     strategy:
       matrix:
-        command: [up, refresh, destroy, preview]
+        command: [up, refresh, destroy, preview, cancel]
         os: [ubuntu-latest, macos-latest, windows-latest]
       fail-fast: false
     steps:
@@ -86,7 +86,7 @@ jobs:
     name: Golang ${{ matrix.command }} on ${{ matrix.os }}
     strategy:
       matrix:
-        command: [up, refresh, destroy, preview]
+        command: [up, refresh, destroy, preview, cancel]
         os: [ubuntu-latest, macos-latest, windows-latest]
       fail-fast: false
     steps:

README.md

@@ -38,7 +38,7 @@ This will check out the existing directory and run `pulumi preview`.
 The action can be configured with the following arguments:
 
 - `command` (required) - The command to run as part of the action. Accepted
-  values are `up` (update), `refresh`, `destroy` and `preview`.
+  values are `up` (update), `refresh`, `destroy` `preview` and `cancel`.
 
 - `stack-name` (required) - The name of the stack that Pulumi will be operating
   on

src/config.ts

@@ -9,6 +9,7 @@ export const command = rt.Union(
   rt.Literal('refresh'),
   rt.Literal('destroy'),
   rt.Literal('preview'),
+  rt.Literal('cancel'),
 );
 
 export type Commands = rt.Static<typeof command>;

src/main.ts

@@ -67,7 +67,8 @@ const main = async () => {
       stack.refresh({ onOutput, ...config.options }).then((r) => r.stdout),
     destroy: () =>
       stack.destroy({ onOutput, ...config.options }).then((r) => r.stdout),
-    preview: async () => {
+    cancel: async () => { await stack.cancel(); return "" },
+      preview: async () => {
       const { stdout, stderr } = await stack.preview(config.options);
       onOutput(stdout);
       onOutput(stderr);