How to fix 'TypeError: Key must be a buffer at new Hmac (crypto.js:117:16)' when using ibm-cos-sdk

Question

我尝试根据为 @cloudant/couchbackup 包提供的示例代码执行到 IBM COS 的 Cloudant 备份，并收到来自相关 Hmac 包的错误："TypeError: Key must be a buffer at new Hmac (crypto.js:117:16)".

我调整了示例代码以使用我的特定源 (Cloudant) 和目标 (COS) 凭据，并基本保持示例代码的其他部分不变。运行它在 Ubuntu（在 Virtual Box 上）和 Windows 10 上的结果相同。其他测试脚本证明了对 Cloudant 和 COS 的一般访问。

我的server.js:

const stream = require('stream');
const url = require('url');

const IbmCos = require('ibm-cos-sdk');
const couchbackup = require('@cloudant/couchbackup');
const debug = require('debug')('s3-backup');
const VError = require('verror').VError;

// COS properties 
const ibmAuthEndpointUrl = 'https://iam.ng.bluemix.net/oidc/token';
var backupBucket = process.env.COS_BUCKET;

var s3config = {
    endpoint: process.env.COS_ENDPOINT,
    apiKeyId: process.env.COS_API_KEY,
    ibmAuthEndpoint: ibmAuthEndpointUrl,
    serviceInstanceId: process.env.COS_RES_INST,
};

// Cloudant properties
const sourceUrl = process.env.COUCH_URL;
const sourceDbName = process.env.COUCH_DATABASE;
const sourceUrlExt = sourceUrl + '/' + sourceDbName;
const shallow = false;

// Create the COS client for the configuration:
var ibmS3Client = new IbmCos.S3(s3config);

const backupKeyPrefix = "A";
const backupKey = `${backupKeyPrefix}-${new Date().toISOString()}`;
debug(`Creating a new backup of ${s(sourceUrlExt)} at ${backupBucket}/${backupKey}...`);

bucketAccessible(ibmS3Client, backupBucket)
    .then(() => {
        return backupToS3(sourceUrlExt, ibmS3Client, backupBucket, backupKey, shallow);
    })
    .then(() => {
        debug('done.');
    })
    .catch((reason) => {
        debug(`Error: ${reason}`);
        process.exit(1);
    });

上面代码的主要部分和函数bucketAccessible、backupToS3和s来自示例script。

运行 server.js 我希望从 Cloudant 导出的文本文件存储在 COS 中。但是，这是我得到的错误：

$ DEBUG=s3-backup node server.js
  s3-backup Creating a new backup of https://<mytenant>-bluemix.cloudant.com/test-48hg at dch-48h-backup01/A-2019-02-13T13:28:38.719Z... +0ms
  s3-backup Setting up S3 upload to ${s3Bucket}/${s3Key} +1s
  s3-backup Starting streaming data from ${sourceUrl} +1ms
  s3-backup Download from ${sourceUrl} complete. +717ms
  s3-backup S3 upload done +5ms
  s3-backup TypeError: Key must be a buffer
  s3-backup     at new Hmac (crypto.js:117:16)
  s3-backup     at Object.createHmac (crypto.js:643:10)
  s3-backup     at Object.hmac (C:\Users\StefanVogel\Documents\GitHubhg-backup\node_modules\ibm-cos-sdk\lib\util.js:400:30)
  s3-backup     at Object.getSigningKey (C:\Users\StefanVogel\Documents\GitHubhg-backup\node_modules\ibm-cos-sdk\lib\signers\v4_credentials.js:59:8)
  s3-backup     at V4.signature (C:\Users\StefanVogel\Documents\GitHubhg-backup\node_modules\ibm-cos-sdk\lib\signers\v4.js:95:36)
  s3-backup     at V4.authorization (C:\Users\StefanVogel\Documents\GitHubhg-backup\node_modules\ibm-cos-sdk\lib\signers\v4.js:90:36)
  s3-backup     at V4.addAuthorization (C:\Users\StefanVogel\Documents\GitHubhg-backup\node_modules\ibm-cos-sdk\lib\signers\v4.js:32:12)
  s3-backup     at C:\Users\StefanVogel\Documents\GitHubhg-backup\node_modules\ibm-cos-sdk\lib\event_listeners.js:199:18
  s3-backup     at finish (C:\Users\StefanVogel\Documents\GitHubhg-backup\node_modules\ibm-cos-sdk\lib\config.js:308:7)
  s3-backup     at C:\Users\StefanVogel\Documents\GitHubhg-backup\node_modules\ibm-cos-sdk\lib\config.js:324:9 +0ms
  s3-backup Error: Error: S3 upload failed +2ms

我用 file 尝试了同样的事情而不是示例脚本的 stream 版本，仍然有同样的错误。

Answer 1

显然，ibm-cos-sdk 没有正确安装。在运行ning npm install ibm-cos-sdk 之后它运行良好。不确定为什么 const IbmCos = require('ibm-cos-sdk'); 不够。也许这是对 npm 知识渊博的人（当然不是我）的另一个问题。

我还设法运行使用 aws-sdk 对实例化客户端稍作修改的相同脚本。

How to fix 'TypeError: Key must be a buffer at new Hmac (crypto.js:117:16)' when using ibm-cos-sdk

How to fix 'TypeError: Key must be a buffer at new Hmac (crypto.js:117:16)' when using ibm-cos-sdk

javascript

node.js

object-storage

ibm-cloud