This repository hosts a Generic Archiver for Quasar.
Quasar: Quick OPC-UA Server Generation Framework, is a software framework used at CERN (and beyond) to create OPC-UA servers.
The Generic Archiver, with an obligatory specific archiver, provides data logging functionality for Quasar Servers. Data logging can be used to:
- provide historic access to the OPC-UA clients,
- deliver quality mechanism to debug, test and development of OPC-UA servers based in quasar,
- deliver persistency
The Generic Archiver is just an interface in the C++ programming language. Specific Archivers implement this interface and provide factual data logging into a data-base, a file, etc. As of June 2017, the only known Specific Archiver is the InfluxDb Archiver .
The Generic Archiver is organized as a Quasar Optional Module (look at Quasar docs).
First of all, data logging in Quasar requires both the Generic Archiver and the Specific Implementation, say, the InfluxDB Archiver.
You need to enable both modules in your Quasar project:
./quasar.py enable_module GenericArchiver
./quasar.py enable_module InfluxDBArchiver ( or any other Specific Archiver)And you'll need to create and tear down the instance, both in Server/src/QuasarServer.cpp:
In QuasarServer constructor: (note that ignoring the return value from new is intentional)
new InfluxDbArchiver::InfluxDbArchiver("mydb");In the QuasarServer destructor:
GenericArchiver::GenericArchiver::instance()->kill();That's it!