Add ConnectionString parsing

In plenty of cases we receive connection strings for azure resources. We should port ConnectionString parser from iot sdk, so that it’s easier and more consistent to work with APIs https://github.com/Azure/azure-iot-sdk-python/blob/master/azure-iot-device/azure/iot/device/common/auth/connection_string.py

[swathipil]

Hi @nfx,

The feature has been added and will be available in the next release. We did consider your proposed option of some sort of ConnectionString class, but ultimately decided that a parsing function is the best solution, as it provides validation that is generic enough for parsing connection strings across services and is simplest to use.

If you are looking for a ConnectionString class, specifically, Event Hubs already has the EventHubConnectionStringProperties class, which I believe is similar to what you are looking for. Storage does not seem to have a similar class, but we can create an issue for this if you still find this necessary.

Thank you for your feedback!

[swathipil]

Hi @nfx, in the core parse_connection_string method, we provide docstring and define the types of the input and type of the keys and values in the output dict. Documentation here.

In the Java example, it looks like there are four instance variables/properties on a ConnectionString, with only one key and one value, rather than parsed key/value pairs. I may be misunderstanding the kind of documentation you are looking for. Would you be able to clarify the purpose of the ConnectionString interface? (If you could provide a sample connection string that would be passed to the implementation of the ConnectionString and the return value of name(), value(), type(), and sticky(), that would be very helpful.)

Thanks!