introduces basic statistics visualization facilities into Opencast. In particular, a statistics provider implementation for InfluxDB 1.x time series is provided, i.e. Opencast can visualize InfluxDB time series data.
The Opencast InfluxDB Adapter is implemented as a standalone Java application that continuously parses the Apache log files HTTP access logs to gather data about the usage of assets (here: "Views" of video files) and feeds those info into InfluxDB.
The adapter optionally uses the External API to find out to which series a given event belongs so that view data can be aggregated on series level, too.
Currently implemented feature set:
Both single- and multi-tenant support
External API integration to retrieve additional metadata from Opencast (series)
Dynamic time window analysis of HTTP accesses to heuristically determine "number of views" (access to the same resource within a given time window don't count as multiple views)
Some filter options to ignore requests that should not be counted
The adapter is implemented for a specific Apache log format. In theory, it could be generalised to support other log formats, web servers or even to a general line-based log analyzer. This is, however, not in the scope of this work.