Cannot find files or folders matching .... AWS S3

Hey experts!

I am totally new to working with remote data. Hopefully my problem is easy for you, since I am a beginner. But unfortunately I really can´t find the mistake by myselft right now.

The task is to open .json files which are stored in a AWS S3 bucket. I tested my key ID and secret key for the s3://test-export/ bucket in the windows console using the AWS CLI:

For me this looks like my "login" is working and I successfully get the sample json file in the bucket. Trying to do the same in MATLAB is not yet working:

    AWS.data.bucketname         = 'test-export';
    AWS.data.path2file          = fullfile('s3://', AWS.data.bucketname, '/');
    AWS.login.accessKeyID       = 'AAAAAAAAAAAAAAAAAAAAA';
    AWS.login.secretAccessKey   = 'BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB';
    
    setenv('AWS_ACCESS_KEY_ID', AWS.login.accessKeyID);
    setenv('AWS_SECRET_ACCESS_KEY', AWS.login.secretAccessKey);
    setenv('AWS_DEFAULT_REGION ', 'eu-central-1');
    
    fds = fileDatastore(AWS.data.path2file,'ReadFcn',@load);

... leads to the error:

Error using fileDatastore (line 226)

Cannot find files or folders matching: 's3:\\test-export\'.

Any ideas why I can make it work in the windows console but can´t find the path when usind fileDatastore in Matlab? How is my path definition wrong?

Thank you very much and best regards!

Answer 1

[Prince Kumar]

Hi,

It looks like you are not reading the data properly.

Please fo through the following doumentation and look couple of examples for better understanding:

• filedatastore

Hope this helps!