将数据从 Azure Blob 存储复制到 AWS S3

Question

我是 Azure 数据工厂的新手，并且有一个有趣的需求。

我需要将文件从 Azure Blob 存储移动到 Amazon S3，最好使用 Azure 数据工厂。

但是 S3 不支持作为接收器；

https://docs.microsoft.com/en-us/azure/data-factory/copy-activity-overview

我还从我在这里读到的各种 cmets 了解到，您不能直接从 Blob 存储复制到 S3 - 您需要在本地下载文件，然后将其上传到 S3。

有没有人知道任何示例，在数据工厂、SSIS 或 Azure Runbook 中可以做这样的事情，我想一个选择是编写一个从数据工厂调用的天蓝色逻辑应用程序或函数。

Answer 1

设法得到一些工作 - 它可能对其他人有用。

我决定编写一个使用 HTTP 请求作为触发器的 azure 函数。

这两篇文章对我帮助很大；

How can I use NuGet packages in my Azure Functions?

Copy from Azure Blob to AWS S3 using C#

如果您使用的是 Azure 函数 2.x，请注意我对 Nuget 包的回答。

这是代码 - 您可以根据需要修改此基础。 我返回一个 JSON 序列化对象，因为 Azure 数据工厂需要它作为从管道发送的 http 请求的响应；

#r "Microsoft.WindowsAzure.Storage"
#r "Newtonsoft.Json"
#r "System.Net.Http"

using System.Net;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Primitives;
using Newtonsoft.Json;
using Microsoft.WindowsAzure.Storage.Blob;
using System.Net.Http;
using Amazon.S3; 
using Amazon.S3.Model;
using Amazon.S3.Transfer;
using Amazon.S3.Util;


public static async  Task<IActionResult> Run(HttpRequest req, ILogger log)
{
    log.LogInformation("Example Function has recieved a HTTP Request");

    // get Params from query string
    string blobUri = req.Query["blobUri"];
    string bucketName = req.Query["bucketName"];

    // Validate query string
    if (String.IsNullOrEmpty(blobUri) || String.IsNullOrEmpty(bucketName)) {

        Result outcome = new Result("Invalid Parameters Passed to Function",false,"blobUri or bucketName is null or empty");
        return new BadRequestObjectResult(outcome.ConvertResultToJson());
    }

    // cast the blob to its type
    Uri blobAbsoluteUri = new Uri(blobUri);
    CloudBlockBlob blob = new CloudBlockBlob(blobAbsoluteUri);

    // Do the Copy
    bool resultBool = await CopyBlob(blob, bucketName, log);

    if (resultBool) { 
        Result outcome = new Result("Copy Completed",true,"Blob: " + blobUri + " Copied to Bucket: " + bucketName);
        return (ActionResult)new OkObjectResult(outcome.ConvertResultToJson());       
    }
    else {
        Result outcome = new Result("ERROR",false,"Copy was not successful Please review Application Logs");
        return new BadRequestObjectResult(outcome.ConvertResultToJson()); 
    }  
}

static async Task<bool> CopyBlob(CloudBlockBlob blob, string existingBucket, ILogger log) {

        var accessKey = "myAwsKey";
        var secretKey = "myAwsSecret";
        var keyName = blob.Name;

        // Make the client 
        AmazonS3Client myClient = new AmazonS3Client(accessKey, secretKey, Amazon.RegionEndpoint.EUWest1);

        // Check the Target Bucket Exists; 
        bool bucketExists = await AmazonS3Util.DoesS3BucketExistAsync (myClient,existingBucket);

        if (!bucketExists) {
            log.LogInformation("Bucket: " + existingBucket + " does not exist or is inaccessible to the application");
            return false;
        }

        // Set up the Transfer Utility
        TransferUtility fileTransferUtility = new TransferUtility(myClient);

        // Stream the file
        try {

            log.LogInformation("Starting Copy");

            using (var stream = await blob.OpenReadAsync()) {

                // Note: You need permissions to not be private on the source blob
                log.LogInformation("Streaming");

                await fileTransferUtility.UploadAsync(stream,existingBucket,keyName);

                log.LogInformation("Streaming Done");   
            }

            log.LogInformation("Copy completed");
        }
        catch (AmazonS3Exception e) {
                log.LogInformation("Error encountered on server. Message:'{0}' when writing an object", e.Message);
            }
        catch (Exception e) {
                log.LogInformation("Unknown encountered on server. Message:'{0}' when writing an object", e.Message);
                return false;
        }

        return true; 
    }

public class Result {

    public string result;
    public bool outcome;
    public string UTCtime;
    public string details; 

    public Result(string msg, bool outcomeBool, string fullMsg){
        result=msg;
        UTCtime=DateTime.Now.ToString("yyyy-MM-dd h:mm:ss tt");
        outcome=outcomeBool;
        details=fullMsg;
    }

    public string ConvertResultToJson() {
        return JsonConvert.SerializeObject(this);
    } 
}

Answer 2

使用 AzCopy 将文件从 Azure 存储下载到临时本地存储库中

您可以将文件从 Azure 云存储下载到本地系统，只需按照以下命令，使用递归标志复制所有文件

azcopy /Source:[source_container_url] /Dest:[local_file_path] /Sourcekey:[source_storage_account_access_key] /s

使用 aws s3 cp 命令将本地文件上传到 Amazon S3

 aws s3 cp local_file_path s3://my-bucket/ --recursive