将临时文件存储在 .net lambda 中，然后发布到 s3 Bucket

Question

我正在生成一个 .csv 文件，以便使用 .net c# Lambda 函数进一步存储在 s3 存储桶中。

这是我遵循的流程：

1. 生成 .csv 并将其存储在 lambda 函数执行的 /tmp/ 文件夹中。 在此步骤中，我不确定它是否真的将文件保存在该路径中。

       //filepath = @"/tmp/test.csv"
       try
       {
           using (System.IO.StreamWriter file = new System.IO.StreamWriter(@filepath, true))
           {
   
               file.WriteLine(ID + "," + workItemType + "," + title + "," + assignedTo + "," + state + "," + iterationPath);                    
               Console.WriteLine("Successfully added");
           }
       }
       catch (Exception ex)
       {
           throw new ApplicationException(" somethings wrong: ", ex);
       }
   

2. 将文件上传到 s3 存储桶。

       try
       {
           await client.PutObjectAsync(new Amazon.S3.Model.PutObjectRequest
           {
               BucketName = "mys3bucket",
               Key = "test.csv",
               ContentType = @"/tmp/test.csv"
           });
       await Task.CompletedTask;
       }
       catch (Exception ex)
       {
           Console.WriteLine("Exception in PutS3Object:" + ex.Message);                ;
       }
   

在这最后一步中，我收到此错误消息：

Exception in PutS3Object:The format of value '\tmp\test.csv' is invalid.

我做错了什么？

Answer 1

您需要发送 数据 以包含在 csv 文件中：

    await client.PutObjectAsync(new Amazon.S3.Model.PutObjectRequest
    {
        BucketName = "mys3bucket",
        Key = "test.csv",
        ContentBody = DATAINSTRINGFORMAT,
        ContentType = @"text/csv"
    });

或作为文件路径发送：

    await client.PutObjectAsync(new Amazon.S3.Model.PutObjectRequest
    {
        BucketName = "mys3bucket",
        Key = "test.csv",
        FilePath = FILEPATHONYOURTEMPFOLDER,
        ContentType = @"text/csv"
    });