使用 Nodejs 将文件从 Azure 存储 blob（容器）复制到 Azure 文件共享

Posted 2023-02-19

【中文标题】使用 Nodejs 将文件从 Azure 存储 blob（容器）复制到 Azure 文件共享

【英文标题】：Copy file from Azure Storage blob (Containers) to Azure File shares using Nodejs

【发布时间】：2022-01-07 21:13:57

【问题描述】：

有没有办法将文件从 Azure 容器 (blob) 复制到 Azure 文件共享？

我能够将文件从一个容器复制到另一个容器 - 见下文。 但我想将文件从 Blob 复制到文件共享

const 
    BlobServiceClient,
    StorageSharedKeyCredential
 = require("@azure/storage-blob");

async function copy() 

    const account = "<account-name>";
    const accountKey = "<account-key>";
    const cert = new StorageSharedKeyCredential(account, accountKey)
    const blobServiceClient = new BlobServiceClient(
        `https://$account.blob.core.windows.net`,
        cert
    );

    const sourceContainer = blobServiceClient.getContainerClient("documents")
    const desContainer = blobServiceClient.getContainerClient("copy")
    //if the desContainer does not exist, please run the following code
    // await desContainer.create()

    //copy blob
    const sourceBlob = sourceContainer.getBlobClient("file1.png");
    console.log(sourceBlob, sourceBlob.name)
    const desBlob = desContainer.getBlobClient(sourceBlob.name)
    const response = await desBlob.beginCopyFromURL(sourceBlob.url);
    const result = (await response.pollUntilDone())
    console.log(result._response.status)
    console.log(result.copyStatus)


copy()

【问题讨论】：

您可以将文件从 Azure 文件复制到 Azure blob，请参阅此 github repo 中的示例 js 代码，请参阅文件 basic.js 和 advanced.js 了解如何使用文件共享客户端。虽然没有从文件复制到 blob 的直接示例，但您可以根据给定的示例轻松找到要使用的 API/方法。

感谢@AnandSowmithiran。我尝试按照 advanced.js 中的脚本进行操作，但没有运气。在这个阶段，我必须将文件下载到tmp 文件夹中，然后重新上传到fileShare。

【参考方案1】：

我已经在我的环境中测试过。

要将文件从 Azure 文件共享复制到 Azure Blob 存储，可以使用以下代码：

const 
    BlobServiceClient,
    StorageSharedKeyCredential,
 = require("@azure/storage-blob");
const 
    ShareServiceClient
 = require("@azure/storage-file-share")

async function copy() 

    const account = "<account-name>";
    const accountKey = "<account-key>";
    const cert = new StorageSharedKeyCredential(account, accountKey)
    const accountSas = "<account-sas>"
    const blobServiceClient = new BlobServiceClient(
        `https://$account.blob.core.windows.net`,
        cert
    );
    const serviceClient = new ShareServiceClient(`https://$account.file.core.windows.net$accountSas`,cert)
    const sourceContainer = blobServiceClient.getContainerClient("containerName")
    const shareClient = serviceClient.getShareClient("fileShareName")
    const directoryClient = shareClient.getDirectoryClient("directoryName");
    var fileClient = directoryClient.getFileClient("fileName");
    //if the desContainer does not exist, please run the following code
    // await desContainer.create()
    //copy blob
    const sourceBlob = sourceContainer.getBlobClient("blobFileName");
    const response = await sourceBlob.beginCopyFromURL(fileClient.url);

copy()

要将文件从 Azure Blob Storage 复制到 Azure File Share，我们可以先将 blob 文件下载到本地，然后再将本地文件上传到 Azure File Share。

您可以使用以下代码将 blob 文件下载到本地：

const 
    BlobServiceClient,
    StorageSharedKeyCredential,
 = require("@azure/storage-blob");
    const account = "<account-name>";
    const accountKey = "<account-key>";
    const cert = new StorageSharedKeyCredential(account, accountKey)
    const accountSas = "<account-sas>"
    
function download() 
    const account = "<account-name>";
    const accountKey = "<account-key>";
    const cert = new StorageSharedKeyCredential(account, accountKey)
    const accountSas = "<account-sas>"
    const container = "containerName"
    const blobFileName = "blobFileName"
    const blobServiceClient = new BlobServiceClient(
        `https://$account.blob.core.windows.net`,
        cert
    );
    const sourceContainer = blobServiceClient.getContainerClient(container)
    const sourceBlob = sourceContainer.getBlobClient(blobFileName);
    sourceBlob.downloadToFile(blobFileName);

download()

您可以使用以下代码将文件从本地上传到 Azure 文件共享：

const 
    ShareServiceClient
 = require("@azure/storage-file-share");
function upload() 
    const account = "<account-name>";
    const accountKey = "<account-key>";
    const cert = new StorageSharedKeyCredential(account, accountKey)
    const accountSas = "<account-sas>"
    const serviceClient = new ShareServiceClient(`https://$account.file.core.windows.net$accountSas`,cert)
    const shareClient = serviceClient.getShareClient("fileShareName")
    const directoryClient = shareClient.getDirectoryClient("directoryName");
    var fileClient = directoryClient.getFileClient("FileName");
    fileClient.uploadFile("localFilePath");

upload()