s3 client doesn't handle object keys with slashes

[Gribouillages]

I get a Error GetObject: NoSuchKey when I use a key with a slash. If I use key without slashes, that's fine. How do I get my code to work with slashes?

  const Aws::String bucket_name = "data-ocean-bucket-1";
  const Aws::String object_name = "/data/test/2022-09-20/156461/Trace_Topic_Group/3/tempData";

  Aws::S3::Model::GetObjectRequest object_request;
  object_request.SetBucket(bucket_name);
  object_request.SetKey(object_name);

  Aws::S3::Model::GetObjectOutcome get_object_outcome = 
  s3_client.GetObject(object_request);

  if (get_object_outcome.IsSuccess())
  {
      auto& retrieved_file = get_object_outcome.GetResultWithOwnership().
          GetBody();

      // Print a beginning portion of the text file.
      std::cout << "Beginning of file contents:\n";
      char file_data[255] = { 0 };
      retrieved_file.getline(file_data, 254);
      std::cout << file_data << std::endl;
  }
  else
  {
      auto err = get_object_outcome.GetError();
      std::cout << "Error: GetObject: " <<
          err.GetExceptionName() << ": " << err.GetMessage() << std::endl;
  }

[jmklix]

When I'm testing this it looks like it is ignoring the first /, but I can still get the object without the error that you are seeing. For example I get the same file when using the two strings below:

/data/test/2022-09-20/156461/Trace_Topic_Group/3/tempData
data/test/2022-09-20/156461/Trace_Topic_Group/3/tempData

What is the file name showing up as on the AWS console?

[Gribouillages]

I used the aws cli to view the key and download

gri@drl-dz0214:~/test$ aws s3api list-objects --bucket data-ocean-bucket-1 --endpoint-url=http://10.30.2.23:7783 --max-items=1
{
    "Contents": [
        {
            "Key": "/data/test/2022-09-20/156461/Trace_Topic_Group/3/tempData",
            "LastModified": "2022-07-28T10:08:03.611000+00:00",
            "ETag": "\"d3c174cd1fa3c37ba5ac25b8fa4515e9\"",
            "Size": 534417,
            "StorageClass": "STANDARD_IA",
            "Owner": {
                "DisplayName": "s3_test",
                "ID": "s3_test"
            }
        }
    ],
    "NextToken": "eyJXJrZXI87iOiBudWxsLCAiYmffa190adfuY2F0ZV451W91bnQiOiAyfQ=="
}
gri@drl-dz0214:~/test$ aws s3api get-object --bucket data-ocean-bucket-1 --key /data/test/2022-09-20/156461/Trace_Topic_Group/3/tempData --endpoint-url=http://10.30.2.23:7783 ./test-download-1
{
    "AcceptRanges": "bytes",
    "LastModified": "2022-09-19T10:08:03+00:00",
    "ContentLength": 1102838,
    "ETag": "\"2965ad1e00168454639816d11cf68ab2\"",
    "ContentType": "application/octet-stream",
    "Metadata": {},
    "StorageClass": "STANDARD_IA"
}

It looked fine, but when I used sdk-cpp for access, the key failed to match because it ignored the first /

[jmklix]

@github-actions proposed-answer

Can you add a special case to handle the first /? As noted here / can require special handling with some sdk's. It's not guaranteed that the aws-sdk-cpp will behave the exact same as the cli