How does logging works in Sonic

[reachdsrini]

Hello,
I would like to understand the
a) How does logging works in the SONIC?
b) Is there a way to configure the logs from each container to be redirected to STDOUT
c) What is the recomemded default method for logging (rsyslog, stdout,...)?
d) I would like to develop a way to collect the logs outside the containers provided by SONIC for performing analysis. How this is possible programatically using API's?