Cleanups and package refactoring

packages/cache/src/internal/blob/download-cache.ts

@@ -0,0 +1,25 @@
+import * as core from '@actions/core'
+
+import {
+  BlobClient,
+  BlockBlobClient,
+  BlobDownloadOptions,
+} from '@azure/storage-blob'
+
+export async function DownloadCacheFile(
+  signedUploadURL: string,
+  archivePath: string,
+): Promise<{}> {
+  const downloadOptions: BlobDownloadOptions = {
+    maxRetryRequests: 5,
+  }
+
+  // TODO: tighten the configuration and pass the appropriate user-agent
+  const blobClient: BlobClient = new BlobClient(signedUploadURL)
+  const blockBlobClient: BlockBlobClient = blobClient.getBlockBlobClient()
+
+  core.debug(`BlobClient: ${JSON.stringify(blobClient)}`)
+  core.debug(`blockBlobClient: ${JSON.stringify(blockBlobClient)}`)
+
+  return blockBlobClient.downloadToFile(archivePath, 0, undefined, downloadOptions)
+}