Software chunks initially developped for ID02 upgrade program in 2012-2014.
- Dahu is a lightweight plugin based framework...
... technically a JSON-RPC server over Tango:
- plugins can be class or can be generated from any state-less function written in Python
- a plugin is executed within a job, each job lives in its own thread.
- plugins have empty constructors plus 4 methods (or more)
- setup allows to set the input parameters. Sanitization is performed here.
- process does the work.
- teardown sets the output, the logging and cleans up (if needed).
- abort can be used to stop the processing if a plugin is a daemon.
- the job is responsible for serializing on disk of the plugin's input and output
- jobs can be launched using the tango interface (or other ...)
- plugins have a single input and output, they are simple JSON-serializable dictionaries.