在不使用 Azure SDK 的情况下使用 REST API 将流上传到 Azure Blob 存储

Question

我希望以流的形式将文件上传到 Azure 存储，但我不想使用 Azure SDK，而是想以更通用的方式使用 REST API而不是 BlobServiceClient。

有没有办法做到这一点？ 可以在此处找到相同的参考链接：

https://docs.microsoft.com/en-us/azure/storage/common/storage-samples-javascript?toc=/azure/storage/blobs/toc.json#blob-samples

https://github.com/Azure/azure-sdk-for-js/blob/master/sdk/storage/storage-blob/samples/javascript/advanced.js#L74

但是这里提到的链接提出了一个使用Azure SDK 的解决方案。我想这样做 没有 Azure SDK

代码如下：

const CryptoJS = require("crypto-js");
const request = require("request");
const fs = require("fs");

const account = process.env.ACCOUNT_NAME || "";
const key = process.env.ACCOUNT_KEY || "";
const containerName = "demo";
const blobName = "dummyfile.txt";
var strTime = new Date().toUTCString();

// read file to Stream
var filePath = `${__dirname}/README.md`;
const readStream = fs.createReadStream(filePath);
var stat = fs.statSync(filePath);

string_params = {
  verb: "PUT",
  "Content-Encoding": "",
  "Content-Language": "",
  "Content-Length": stat.size,
  "Content-MD5": "",
  "Content-Type": "application/octet-stream",
  Date: "",
  "If-Modified-Since": "",
  "If-Match": "",
  "If-None-Match": "",
  "If-Unmodified-Since": "",
  Range: "",
  CanonicalizedHeaders:
    "x-ms-blob-type:BlockBlob\nx-ms-date:" +
    strTime +
    "\nx-ms-version:" +
    "2020-04-08\n",
  CanonicalizedResource: `/${account}/${containerName}/${blobName}`,
};

var strToSign = `${string_params["verb"]}\n${string_params["Content-Encoding"]}\n${string_params["Content-Language"]}\n${string_params["Content-Length"]}\n${string_params["Content-MD5"]}\n${string_params["Content-Type"]}\n${string_params["Date"]}\n${string_params["If-Modified-Since"]}\n${string_params["If-Match"]}\n${string_params["If-None-Match"]}\n${string_params["If-Unmodified-Since"]}\n${string_params["Range"]}\n${string_params["CanonicalizedHeaders"]}${string_params["CanonicalizedResource"]}`;

var secret = CryptoJS.enc.Base64.parse(key);
var hash = CryptoJS.HmacSHA256(strToSign, secret);
var hashInBase64 = CryptoJS.enc.Base64.stringify(hash);
var auth = `SharedKey ${account}:` + hashInBase64;

const options = {
  url: `https://${account}.blob.core.windows.net/${containerName}/${blobName}`,
  headers: {
    Authorization: auth,
    "x-ms-blob-type": "BlockBlob",
    "x-ms-date": strTime,
    "x-ms-version": "2020-04-08",
    "Content-Type": "application/octet-stream",
    "Content-Length": stat.size,
  },
  body: readStream,
};

function callback(error, response, body) {
  console.log(response.statusCode);
  console.log(response.statusMessage);
  if (!error && response.statusCode == 200) {
    console.log(error);
    console.log(response);
    console.log(body);
  }
}

request.put(options, callback);

我得到的错误是：

TypeError: Cannot read property 'statusCode' of undefined

编辑：问题已由 Pamela 的代码解决 + 我发现的问题是初始化 .env 变量时出错。

Answer 1

您可以使用Put Blob Rest API 上传流。有一个使用 node.js 的示例。

const CryptoJS = require("crypto-js");
const request = require("request");
const fs = require('fs');

const account = "account-name";
const key = "account-key";
var strTime = new Date().toUTCString();

var filePath = 'your-file-path';
const readStream = fs.createReadStream(filePath);
var stat = fs.statSync(filePath);

string_params = {
    'verb': 'PUT',
    'Content-Encoding': '',
    'Content-Language': '',
    'Content-Length': stat.size,
    'Content-MD5': '',
    'Content-Type': 'application/octet-stream',
    'Date': '',
    'If-Modified-Since': '',
    'If-Match': '',
    'If-None-Match': '',
    'If-Unmodified-Since': '',
    'Range': '',
    'CanonicalizedHeaders': 'x-ms-blob-type:BlockBlob\nx-ms-date:' + strTime + '\nx-ms-version:' + '2020-04-08\n',
    'CanonicalizedResource': `/${account}/containername/myblob`
}


var strToSign = `${string_params['verb']}\n${string_params['Content-Encoding']}\n${string_params['Content-Language']}\n${string_params['Content-Length']}\n${string_params['Content-MD5']}\n${string_params['Content-Type']}\n${string_params['Date']}\n${string_params['If-Modified-Since']}\n${string_params['If-Match']}\n${string_params['If-None-Match']}\n${string_params['If-Unmodified-Since']}\n${string_params['Range']}\n${string_params['CanonicalizedHeaders']}${string_params['CanonicalizedResource']}`
console.log(strToSign);

var secret = CryptoJS.enc.Base64.parse(key);
var hash = CryptoJS.HmacSHA256(strToSign, secret);
var hashInBase64 = CryptoJS.enc.Base64.stringify(hash);
var auth = `SharedKey ${account}:` + hashInBase64;
console.log(auth)

const options = {
    url: `https://${account}.blob.core.windows.net/containername/myblob`,
    headers: {
        Authorization: auth,
        'x-ms-blob-type': 'BlockBlob',
        "x-ms-date": strTime,
        "x-ms-version": "2020-04-08",
        'Content-Type': "application/octet-stream",
        'Content-Length': stat.size
    },
    body: readStream
};

function callback(error, response, body) {
    console.log(response.statusCode);
    console.log(response.statusMessage);
    if (!error && response.statusCode == 200) {
        console.log(error);
        console.log(response);
        console.log(body);
    }
}

request.put(options, callback);

Answer 2

您可以尝试将 Azure REST API 用于 Blob 操作。你可以在这里找到 Blob 的 REST API - Operations on Blob

问题是您将如何在运行时处理流上传。 Azure SDK 支持流上传。但是，对于 REST API，您需要自己处理。

上传流或并行数据，您需要围绕此 REST API 调用进行一些包装以实现此目的

希望你觉得这很有用。