Event logging

[sofer]

We need to make sure that we are logging all user interactions, so that at some point we can interrogate them for a better understanding of how users are interacting with the apps on the platform.

[mattlub]

Do you mean logging info about requests to the API and their responses? Or something different/more specific?

[sofer]

For now, it really needn't be anything more sophisticated than an http log, with a time stamp, user details (if logged in) and request details.

[mattlub]

https://github.com/expressjs/morgan is a popular http logging with express/node package

[mattlub]

@des-des @m4v15 should we log to a file/a db collection/other?

e.g. morgan example logging to a new text file each day:
https://github.com/expressjs/morgan#log-file-rotation

[des-des]

@mattlub we cannot log directly to fs in heroku, heroku fs is ephemeral.

[mattlub]

ok, I don't know where we should go with this then.

• there are logging "add-ons" in Heroku (see here) but predictably they don't offer much for free.

• Otherwise you can implement your own "log drain" but I don't really know what that means, but must involve 'draining' the logs to somewhere, leaving us with a fair bit to do e.g. host the logs elsewhere

[des-des]

@sofer Are there more detailed requirements?

I expect some express logging middleware being hooked up to a mongo table will be fine for MVP @mattlub .