Downloading objects with leading forward slash in key

[aokhovat]

We have noticed the C++ SDK is not able to download objects with leading forward slash in key, e.g. /tmp/mydoc.txt. The error is NoSuchKey. Although the Python lib (boto3) and aws cli are able to download the object with the same key. Thanks

[sbiscigl]

So this was originally was a issue with how the cpp handled path separators with S3, we could not change the default behavior to match cli/boto by default without breaking existing customers so we made it opt-in(#2891). you can opt in using

SetPreservePathSeparators(true);

a complete example would look like

#include <aws/core/Aws.h>
#include <aws/core/http/URI.h>
#include <aws/s3/S3Client.h>
#include <aws/s3/model/GetObjectRequest.h>

using namespace Aws;
using namespace Aws::Http;
using namespace Aws::S3;
using namespace Aws::S3::Model;

auto main() -> int {
  SDKOptions options{};
  InitAPI(options);
  {
    SetPreservePathSeparators(true);
    S3ClientConfiguration client_configuration;
    S3Client client{};
    const auto get_object_outcome = client.GetObject(GetObjectRequest()
        .WithBucket(your_bucket)
        .WithKey("/tmp/mydoc.txt"));
    assert(get_object_outcome.IsSuccess());
    std::cout << get_object_outcome.GetResult().GetBody().rdbuf() << "\n";
  }
  ShutdownAPI(options);
  return 0;
}

[aokhovat]

Thanks much. Very helpful