Support for structured logging (JSON)

[4TT1L4]

Problem:

• At the moment only the standard env_logger based logging is supported. In some scenarios it would be beneficial, if Oura would support structured logging as well, in an easy to parse JSON format.

For a more detailed description about the structured logging format, please see the Google Cloud Documentation:

• Google Cloud Guides - Structured logging

Suggestion:

• Add a feature flag for the configuration of the logging method. Depending if the json_logs feature is set, Oura could be using json_env_logger2 or env_logger.

[4TT1L4]

I have created a PR with the proposed changes:

• Support for structured logging (JSON) #437 #438