i. Add logging infrastructure. 

a. Select a well known Node module to use as logger.

See: https://github.com/i0natan/nodebestpractices/blob/master/sections/errorhandling/usematurelogger.md for Node libraries to use as loggers

b. Define a set of log patterns to use (e.g. log line should have timestamp, transaction-id, log level, class name, etc..)

c. Define a set of rules for rolling-over log files (i.e. what is the max size of log file? should we keep a max number of log files on disk? should we archive older log files? should we rollover based on timestamp?)

ii. Log request-response between Loopback server and  controller/processor mS

a. Capture HTTP request URI, headers (exclude Auth headers)

b. Capture corresponding HTTP response status code, headers

iii. Log request-response into Loopback server

a. Capture HTTP request URI, headers (exclude Auth headers)

b. Capture corresponding HTTP response status code, headers