I’m trying to do is to open a connection, without using a config file, is that possible?

navamani.p

I’m trying to stream prices using the lseg api.

I was using a config file to set up the session:

 

with open(self.config_file_name, "w") as config_file:
        config_file.write(json.dumps(self.config_dict, indent=4))
self._session = rd.open_session(config_name=self.config_file_name)

 

This works well, but when I deploy to AWS the connection fails. I think it’s because I don’t have permissions to write files on the cloud.

 

I tried to set up the session without using the config:

 

session = rd.session.platform.Definition(app_key =self.appKey, grant = rd.session.platform.GrantPassword(username=self.user, password=self.password), signon_control=True).get_session()rd.session.set_default(session)self._session = rd.open_session()

 

This seems to open a connection, and then I can open the stream:

 

rd.open_pricing_stream(universe=codes, fields=fields, on_data=lambda stream, instrument_name,                                                                                            fields: threading.Thread(target=connection.process_stream_updates, args=(instrument_name,stream)).start())return cls._instance

 

But then I don’t see the prices streaming.

 

In short, what I’m trying to do is to open a connection, without using a config file, is that possible?

 

Gurpreet

Hello @navamani.p

Yes, it is possible to use the library without the config file. I would recommend that you update your library (RD library) to the latest version (LD library).

In the provided examples for LD library, you can see how to create and open a platform session without the use of a configuration file,

session = ld.session.platform.Definition(
    app_key = APP_KEY, 
    grant = ld.session.platform.GrantPassword(
        username = RDP_LOGIN, 
        password = RDP_PASSWORD
    )
).get_session()