monitoring_log_requests: Improve data output

* Add environment var to enable/disable requests log
* Add ability to send data to an UDP listener instead of stdout

monitoring_log_requests/README.rst

@@ -6,7 +6,14 @@ Monitoring: Requests Logging
 
 This addon is used to output in the logs informations about the user's
 requests.  Data such as *what* is the request, *who* requested it and *how
-much* time did it took to complete could then be extracted from the logs and
+much* time did it took to complete.
+
+The requests logging is activated with the environment variable `ODOO_REQUESTS_LOGGING` set to `1`.
+
+Data output
+###########
+
+The data could then be extracted from the logs and
 loaded in an analysis tool such as ElasticSearch/Kibana.
 
 Each log line is a JSON with the monitored fields, so it is easier to parse.
@@ -15,3 +22,8 @@ The logs are prefixed with ``monitoring.http.requests`` so be sure to enable
 this path in the log handler::
 
     - LOG_HANDLER=":WARNING,monitoring.http.requests:INFO"
+
+It is also possible to send the data directly to an UDP listener without
+outputting anything to the logs to avoid flooding on busy instances.
+To do so, use the environment variable `ODOO_REQUESTS_LOGGING_UDP`
+set to a value like `<address>:<port>` (`address` can be an IP or a domain).