Palladio Component Model/Replication

Palladio Developer Wiki

• Palladio - Home
• Download
• Features
• Screenshots
• Documentation

Adding features to model replication more easily has been discussed and attempted several times. This page collects a list of attempts and options.

Architectural templates

Architectural Templates (Addon state: Incubation)

• briefly discussed at PCM Development/Palladio Concall/Minutes 20140811#Replications in PCM
• more detail at Architectural Templates and [1]

1:n mapping of AssemblyContext to AllocationContext

• Suggestion to allow one AssemblyContext to refer to n AllocationContexts
• Full explanation at PCM Changelog#1:n mapping of AssemblyContext to AllocationContext (Anne)
• Supported by PerOpteryx, PCM2LQN and PCM2StoEx as of PCM 4.0 (and previous releases).
• This has been rejected in a mailing list discussion on August 5th and 9th, 2011. Short summary:
  • Is already supported by completions (not anymore, though)
  • the 1:1 OCl check is useful to see whether the allocation is as intended (Anne: could remain a min 1 check)
  • effort to adjust all analyzers
  • assumption that local communication is preferred (see above link) is shaky
  • what about probes for the results?
  • a load balancer is a design and not an allocation question (Anne disagrees)

Completions

Replication could be, should be, or was modelled as a completion as proposed in Lucia's diss. Not clear what the status is, but probably with the discontinuation of QVT-R it is quite outdated.

Keywords: Replication, Replikation, Replica