Add fallbackToDownoadAction

.github/workflows/download.yml

@@ -12,6 +12,18 @@ jobs:
     steps:
       - name: Wait
         run: sleep 60
+  in-progress:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Dump
+        run: |
+          mkdir artifact
+          echo temp > artifact/sha
+      - name: Upload a temporary artifact
+        uses: actions/upload-artifact@v3
+        with:
+          name: artifact
+          path: artifact
   download-latest:
     runs-on: ubuntu-latest
     needs: wait
@@ -140,4 +152,34 @@ jobs:
           dry_run: true
       - name: Test
         run: test ${{ steps.download.outputs.dry_run }} == false
+  download-in-progress:
+    runs-on: ubuntu-latest
+    needs: [wait, in-progress]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Download
+        uses: ./
+        with:
+          workflow: upload.yml
+          name: artifact
+          path: artifact
+          workflow_conclusion: in_progress
+      - name: Test
+        run: grep temp artifact/sha
+  download-empty-conclusion:
+    runs-on: ubuntu-latest
+    needs: [wait, in-progress]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Download
+        uses: ./
+        with:
+          workflow: upload.yml
+          name: artifact
+          path: artifact
+          workflow_conclusion:
+      - name: Test
+        run: grep $GITHUB_SHA artifact/sha
 

main.js

@@ -1,10 +1,24 @@
 const core = require('@actions/core')
 const github = require('@actions/github')
+const artifact = require('@actions/artifact')
 const AdmZip = require('adm-zip')
 const filesize = require('filesize')
 const pathname = require('path')
 const fs = require('fs')
 
+async function downloadAction(name, path) {
+    const artifactClient = artifact.create()
+    const downloadOptions = {
+        createArtifactFolder: false
+    }
+    const downloadResponse = await artifactClient.downloadArtifact(
+        name,
+        path,
+        downloadOptions
+    )
+    core.setOutput("found_artifact", true)
+}
+
 async function main() {
     try {
         const token = core.getInput("github_token", { required: true })
@@ -137,7 +151,15 @@ async function main() {
         }
 
         if (!runID) {
-            return setExitMessage(ifNoArtifactFound, "no matching workflow run found with any artifacts?")
+            if (workflowConclusion && (workflowConclusion != 'in_progress')) {
+                return setExitMessage(ifNoArtifactFound, "no matching workflow run found with any artifacts?")
+            }
+
+            try {
+                return await downloadAction(name, path)
+            } catch (error) {
+                return setExitMessage(ifNoArtifactFound, "no matching artifact in this workflow?")
+            }
         }
 
         let artifacts = await client.paginate(client.rest.actions.listWorkflowRunArtifacts, {