fix: reduce memory pressure while uploading files

packages/amplify-provider-awscloudformation/package.json

@@ -75,7 +75,7 @@
     "@types/deep-diff": "^1.0.0",
     "@types/folder-hash": "^4.0.1",
     "@types/lodash.throttle": "^4.1.6",
-    "@types/node": "^12.12.6",
+    "@types/node": "^18.16.0",
     "@types/uuid": "^8.0.0",
     "jest": "^29.5.0",
     "typescript": "^4.9.5"

packages/amplify-provider-awscloudformation/src/aws-utils/aws-s3.ts

@@ -10,13 +10,15 @@ import { $TSAny, $TSContext, AmplifyError, AmplifyFault, stateManager } from '@a
 
 import _ from 'lodash';
 
+import fs from 'fs-extra';
 import ora from 'ora';
 import { ListObjectVersionsOutput, ListObjectVersionsRequest, ObjectIdentifier } from 'aws-sdk/clients/s3';
 import { pagedAWSCall } from './paged-call';
 import { loadConfiguration } from '../configuration-manager';
 import aws from './aws';
 
 const providerName = require('../constants').ProviderName;
+const consumers = require('stream/consumers');
 
 const { fileLogger } = require('../utils/aws-logger');
 
@@ -126,6 +128,14 @@ export class S3 {
         spinner.start('Uploading files.');
       }
       logger('uploadFile.s3.upload', [others])();
+      const minChunkSize = 5 * 1024 * 1024; // 5 MB
+      if (augmentedS3Params.Body instanceof fs.ReadStream && fs.statSync(augmentedS3Params.Body.path).size <= minChunkSize) {
+        // Buffer small files to avoid memory leak.
+        // Previous implementation used s3.putObject for small uploads, but it didn't have retries, see https://github.com/aws-amplify/amplify-cli/pull/13493.
+        // On the other hand uploading small streams leads to memory leak, see https://github.com/aws/aws-sdk-js/issues/2552.
+        // Therefore, buffering small files ourselves seems to be middle ground between memory leak and loosing retries.
+        augmentedS3Params.Body = await consumers.buffer(augmentedS3Params.Body);
+      }
       uploadTask = this.s3.upload(augmentedS3Params);
       if (showSpinner) {
         uploadTask.on('httpUploadProgress', (max) => {

packages/amplify-provider-awscloudformation/src/download-api-models.ts

@@ -50,6 +50,9 @@ const extractAPIModel = async (context: $TSContext, resource: $TSObject, framewo
 
   fs.ensureDirSync(tempDir);
 
+  // This has been working fine before bumping node types to 18.x
+  // eslint-disable-next-line @typescript-eslint/ban-ts-comment
+  // @ts-ignore
   const buff = Buffer.from(data.body);
   fs.writeFileSync(`${tempDir}/${apiName}.zip`, buff);
   await extract(`${tempDir}/${apiName}.zip`, { dir: tempDir });

packages/amplify-provider-awscloudformation/src/zip-util.ts

@@ -15,6 +15,10 @@ export const downloadZip = async (s3: S3, tempDir: string, zipFileName: string,
   log();
   const objectResult = await s3.getFile({ Key: zipFileName }, envName);
   fs.ensureDirSync(tempDir);
+
+  // This has been working fine before bumping node types to 18.x
+  // eslint-disable-next-line @typescript-eslint/ban-ts-comment
+  // @ts-ignore
   const buff = Buffer.from(objectResult);
   const tempFile = `${tempDir}/${zipFileName}`;
   await fs.writeFile(tempFile, buff);

yarn.lock

@@ -811,7 +811,7 @@ __metadata:
     "@types/deep-diff": ^1.0.0
     "@types/folder-hash": ^4.0.1
     "@types/lodash.throttle": ^4.1.6
-    "@types/node": ^12.12.6
+    "@types/node": ^18.16.0
     "@types/uuid": ^8.0.0
     amplify-codegen: 4.7.3
     archiver: ^5.3.0
@@ -12488,10 +12488,12 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@types/node@npm:*, @types/node@npm:^18.16.1":
-  version: 18.16.1
-  resolution: "@types/node@npm:18.16.1"
-  checksum: bd43d9e1df253955d73348ae9c8bc73f328ad3bd5481a134743142a04b0d1b74e39b90369aa0d361fd0b86a6a5c98035a226c1e1a4f67ba98e71b06734cc4f7d
+"@types/node@npm:*, @types/node@npm:^18.16.0, @types/node@npm:^18.16.1":
+  version: 18.19.31
+  resolution: "@types/node@npm:18.19.31"
+  dependencies:
+    undici-types: ~5.26.4
+  checksum: bfebae8389220c0188492c82eaf328f4ba15e6e9b4abee33d6bf36d3b13f188c2f53eb695d427feb882fff09834f467405e2ed9be6aeb6ad4705509822d2ea08
   languageName: node
   linkType: hard
 
@@ -12503,9 +12505,9 @@ __metadata:
   linkType: hard
 
 "@types/node@npm:^16.9.2":
-  version: 16.11.14
-  resolution: "@types/node@npm:16.11.14"
-  checksum: 017037da8387c85ea92c4ecb06dfb1f511e398ec14504a9395bc92948d58840755066eba991e308b39cf1117648be20cd3c43d184f1ec1339bb60b836dd5e4e7
+  version: 16.18.96
+  resolution: "@types/node@npm:16.18.96"
+  checksum: 05ac1c80c8d075086863f7640fd3e75c3912c4ed067bb38bb8fd5377f4e64de7a81d5be3ceae5448dc90d9802a0c7b0d3376538759b91ea652d16cc6dc7de767
   languageName: node
   linkType: hard
 
@@ -31466,6 +31468,13 @@ node-pty@beta:
   languageName: node
   linkType: hard
 
+"undici-types@npm:~5.26.4":
+  version: 5.26.5
+  resolution: "undici-types@npm:5.26.5"
+  checksum: bb673d7876c2d411b6eb6c560e0c571eef4a01c1c19925175d16e3a30c4c428181fb8d7ae802a261f283e4166a0ac435e2f505743aa9e45d893f9a3df017b501
+  languageName: node
+  linkType: hard
+
 "unfetch@npm:^4.2.0":
   version: 4.2.0
   resolution: "unfetch@npm:4.2.0"