adding check for running

packages/artifact/src/internal/upload/zip.ts

@@ -7,6 +7,7 @@ import {UploadZipSpecification} from './upload-zip-specification'
 import {getUploadChunkSize} from '../shared/config'
 
 export const DEFAULT_COMPRESSION_LEVEL = 6
+export var isRunning = false
 
 // Custom stream transformer so we can set the highWaterMark property
 // See https://github.com/nodejs/node/issues/8855
@@ -27,6 +28,10 @@ export async function createZipUploadStream(
   uploadSpecification: UploadZipSpecification[],
   compressionLevel: number = DEFAULT_COMPRESSION_LEVEL
 ): Promise<ZipUploadStream> {
+  if (isRunning) {
+    throw new Error('The function is already running')
+  }
+  isRunning = true
   core.debug(
     `Creating Artifact archive with compressionLevel: ${compressionLevel}`
   )
@@ -40,7 +45,8 @@ export async function createZipUploadStream(
 
   zip.on('finish', zipFinishCallback)
   zip.on('end', zipEndCallback)
-  async.forEachOf(uploadSpecification, async file => {
+  try {
+    await async.forEachOf(uploadSpecification, async file => {
       if (file.sourcePath !== null) {
         zip.entry(
           createReadStream(file.sourcePath),
@@ -57,6 +63,9 @@ export async function createZipUploadStream(
         })
       }
     })
+  } finally {
+    isRunning = false
+  }
 
   const bufferSize = getUploadChunkSize()
   const zipUploadStream = new ZipUploadStream(bufferSize)