Using C++ client to connect to LeoFS

[Narasimha Bhat]

Hi,

 We are evaluating using LeoFS for our storage needs. But we have a requirement to be able to save and retrieve data using C++ . For that we are trying to use AWS CPP SDK. But we are facing issues with it. Which is the preferred C++ client library to use with LeoFS S3 interface? Are there any alternatives?
Thank you in advance.
regards,
Narasimha Bhat

[yoshiyuki kanno]

Hi,

https://github.com/aws/aws-sdk-cpp should work for you.
The below gist is the sample code to interact with LeoFS running on localhost.
https://gist.github.com/mocchira/0bb570f240cbad3c8d97191fa0d6d68b

The points you should take care are

- need to set an endpoint that refers to where your leo_gateway is
running through
http://sdk.amazonaws.com/cpp/api/LATEST/struct_aws_1_1_client_1_1_client_configuration.html#a83b1e084eb22cebcc86e2a8f57b1954b
- need to set a scheme (protocol: http or https) through
http://sdk.amazonaws.com/cpp/api/LATEST/namespace_aws_1_1_http.html#af29e56bf3a0346061a5ecd57158ba59d

and also please take a look at
https://leo-project.net/leofs/docs/admin/system_operations/s3/ for
more detail on how LeoFS deal with endpoints.
ex)
```
If your leo_gateway is running on
- scheme: http
- host: yourhost
- port: 80

you need
- call `leofs-adm add-endpoint yourhost` on your terminal.
- modify the sample code
- opts.endpointOverride = "yourhost:80";
```

Please let me know if you face any problem.

Best,
Kanno.

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--
Yoshiyuki Kanno
LeoFS Committer(http://www.leofs.org)
--------------------------------------------------
Stoic Corp.
URL: http://www.stoic.co.jp/
E-mail: yoshiyu...@stoic.co.jp

[Narasimha Bhat]

Hi Kanno san,

Thank you for helping with this. As you pointed we created a endpoint. Now we are able to use aws cpp sdk. Thanks again.

regards,

Narasimha

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