Add option for concurrent cache downloads with timeout (#1484)

* Add option for concurrent cache downloads with timeout

* Add release notes

* Fix lint

src/internal/cacheHttpClient.ts

@@ -20,7 +20,11 @@ import {
   ITypedResponseWithError,
   ArtifactCacheList
 } from './contracts'
-import {downloadCacheHttpClient, downloadCacheStorageSDK} from './downloadUtils'
+import {
+  downloadCacheHttpClient,
+  downloadCacheHttpClientConcurrent,
+  downloadCacheStorageSDK
+} from './downloadUtils'
 import {
   DownloadOptions,
   UploadOptions,
@@ -171,14 +175,26 @@ export async function downloadCache(
   const archiveUrl = new URL(archiveLocation)
   const downloadOptions = getDownloadOptions(options)
 
-  if (
-    downloadOptions.useAzureSdk &&
-    archiveUrl.hostname.endsWith('.blob.core.windows.net')
-  ) {
-    // Use Azure storage SDK to download caches hosted on Azure to improve speed and reliability.
-    await downloadCacheStorageSDK(archiveLocation, archivePath, downloadOptions)
+  if (archiveUrl.hostname.endsWith('.blob.core.windows.net')) {
+    if (downloadOptions.useAzureSdk) {
+      // Use Azure storage SDK to download caches hosted on Azure to improve speed and reliability.
+      await downloadCacheStorageSDK(
+        archiveLocation,
+        archivePath,
+        downloadOptions
+      )
+    } else if (downloadOptions.concurrentBlobDownloads) {
+      // Use concurrent implementation with HttpClient to work around blob SDK issue
+      await downloadCacheHttpClientConcurrent(
+        archiveLocation,
+        archivePath,
+        downloadOptions
+      )
+    } else {
+      // Otherwise, download using the Actions http-client.
+      await downloadCacheHttpClient(archiveLocation, archivePath)
+    }
   } else {
-    // Otherwise, download using the Actions http-client.
     await downloadCacheHttpClient(archiveLocation, archivePath)
   }
 }