Understanding Moodle’s logging framework

Moodle has a powerful built-in logging framework that is, as expected, fully customizable and extensible. The idea behind the logging mechanism is as follows:

• A user performs an action that triggers an Event. An example is a student who posts a reply on a forum.
• The Log manager entity monitors the event and decides whether it will be logged or ignored. Site-wide log manager settings determine this behavior.
• The log manager sends the data to the active Log store plugin, which filters or enriches the information. The passed-on data might be augmented with an IP address and a timestamp.
• The data is then written to the configured Log store.

The top half of the diagram shows this logging workflow:

Figure 12.14 – From events to reports

Now, let’s take a look at what happens when a user requests a report, which is represented in the bottom half of the diagram:

• The...