Cancel all workflows but the latest

action.yml

@@ -2,7 +2,7 @@ name: 'Cancel Workflow Action'
 description: 'This Action will cancel any previous runs that are not `completed` for a given workflow.'
 author: styfle
 branding:
-  icon: 'stop-circle'  
+  icon: 'stop-circle'
   color: 'white'
 inputs:
   workflow_id:
@@ -11,6 +11,9 @@ inputs:
   access_token:
     description: 'Your GitHub Access Token, ie: {{ github.token }}'
     required: true
+  all_but_latest:
+    description: "Cancel all actions but the last one"
+    required: false
 runs:
   using: 'node12'
   main: 'dist/index.js'

src/index.ts

@@ -23,6 +23,7 @@ async function main() {
   console.log({ eventName, sha, headSha, branch, owner, repo, GITHUB_RUN_ID });
   const token = core.getInput('access_token', { required: true });
   const workflow_id = core.getInput('workflow_id', { required: false });
+  const all_but_latest = core.getInput('all_but_latest', { required: false });
   console.log(`Found token: ${token ? 'yes' : 'no'}`);
   const workflow_ids: number[] = [];
   const octokit = github.getOctokit(token);
@@ -55,11 +56,20 @@ async function main() {
         branch
       });
       console.log(`Found ${data.total_count} runs total.`);
+
+      let cancel_before;
+      if (all_but_latest) {
+        cancel_before = new Date(data.workflow_runs.reduce((a, b) => a.created_at < b.created_at ? a.created_at : b.created_at));
+      } else {
+        cancel_before = new Date(current_run.created_at);
+      }
+
       const runningWorkflows = data.workflow_runs.filter(
         run => run.head_branch === branch && run.head_sha !== headSha && run.status !== 'completed' &&
-            new Date(run.created_at) < new Date(current_run.created_at)
+            run != current_run &&
+            new Date(run.created_at) < cancel_before
       );
-      console.log(`Found ${runningWorkflows.length} runs in progress.`);
+      console.log(`Found ${runningWorkflows.length} runs to cancel.`);
       for (const {id, head_sha, status} of runningWorkflows) {
         console.log('Cancelling another run: ', {id, head_sha, status});
         const res = await octokit.actions.cancelWorkflowRun({
@@ -69,6 +79,15 @@ async function main() {
         });
         console.log(`Cancel run ${id} responded with status ${res.status}`);
       }
+      if (all_but_latest && new Date(current_run.created_at) < cancel_before) {
+        // FIXME actions/core doesn't support cancelling, so we need to do it through the API
+        const res = await octokit.actions.cancelWorkflowRun({
+          owner,
+          repo,
+          run_id: id
+        });
+        console.log(`Cancel run ${id} responded with status ${res.status}`);
+      }
     } catch (e) {
       const msg = e.message || e;
       console.log(`Error while cancelling workflow_id ${workflow_id}: ${msg}`);