自动从 azure 存储解压缩受密码保护的 Zip 文件？

Question

我只是想知道有没有办法从 Azure 存储中提取受密码保护的 zip 文件。 我尝试使用 python Azure Function 无济于事，但在读取文件位置时遇到问题。

文件是否必须临时存储在共享位置才能实现？

只是在这里寻找一点方向，我可能错过了一步吗？

问候，詹姆斯

Answer 1

Azure blob 存储仅提供存储功能，没有运行环境来执行解压缩操作。 So basically, we should download.zip file to Azure function, unzip it and upload files in.zip file 1 by 1.

For a quick test, I write an HTTP trigger Azure function demo that unzipping a zip file with password-protected, it works for me on local:

import azure.functions as func
import uuid
import os
import shutil
from azure.storage.blob import ContainerClient
from zipfile import ZipFile

storageAccountConnstr = '<storage account conn str>'
container = '<container name>'

#define local temp path, on Azure, the path is recommanded under /home 
tempPathRoot = 'd:/temp/'
unZipTempPathRoot = 'd:/unZipTemp/'


def main(req=func.HttpRequest) -> func.HttpResponse:
    reqBody = req.get_json()
    fileName = reqBody['fileName']
    zipPass =  reqBody['password']

    container_client = ContainerClient.from_connection_string(storageAccountConnstr,container)

    #download zip file 
    zipFilePath = tempPathRoot + fileName
    with open(zipFilePath, "wb") as my_blob:
       download_stream = container_client.get_blob_client(fileName).download_blob()
       my_blob.write(download_stream.readall())

    #unzip to temp folder
    unZipTempPath = unZipTempPathRoot + str(uuid.uuid4())
    with ZipFile(zipFilePath) as zf:
        zf.extractall(path=unZipTempPath,pwd=bytes(zipPass,'utf8'))

    #upload all files in temp folder
    for root, dirs, files in os.walk(unZipTempPath):
        for file in files: 
            filePath = os.path.join(root, file)
            destBlobClient = container_client.get_blob_client(fileName + filePath.replace(unZipTempPath,''))
            with open(filePath, "rb") as data:
                destBlobClient.upload_blob(data,overwrite=True)
    
    #remove all temp files 
    shutil.rmtree(unZipTempPath)
    os.remove(zipFilePath)

    return func.HttpResponse("done")

我的容器中的文件：

结果：

使用 blob 触发器会更好地执行此操作，因为如果 zip 文件的大小很大，它将导致超时错误。

无论如何，这只是一个演示，向您展示如何做到这一点。