There are a set of requirements a high-level API for OI should fulfill:
- Caching of CCBs and re-construction of the complete transaction should be
done by the framework, not the user code
- Marshalling from Python code to C should be hidden and done by the framework
- It must be possible to build a "full" OI, that gets callbacks on each
operation, the completed transaction, and a call to apply the transaction
- It must be possible to build an applier that can run in parallel with a full
OI
- There should only need to be "user code" for the functionality the user
wants to have. E.g., if the user doesn't want to get callbacks for each
individual CCB operation, it shouldn't need to write placeholder functions that
do nothing
- It should be possible flexible so the user can choose to either:
- Let the framework code handle the full dispatch loop and select handling
- Let the user integrate the OI with its own dispatch loop and select
handling
---
** [tickets:#1406] pyosaf: Higher leve/pythonic bindings for the IMM OI API are
missing**
**Status:** assigned
**Milestone:** future
**Created:** Tue Jul 07, 2015 01:15 PM UTC by Johan Mårtensson
**Last Updated:** Thu Jul 09, 2015 12:15 PM UTC
**Owner:** Johan Mårtensson
For the IMM OM API there are higher level python bindings that make it much
easier to use compared with the 1-to-1 python bindings. There is for example an
InstanceIterator class that iterates through instances for a given class, Ccb
class for transactions and immom.get() to retrieve a single object.
The IMM OI API only has the 1-to-1 mappings. This makes it hard to write an OI
as all the wrapping of python types to C and back has to be done by each user.
OpenSAF should have an abstracted OI python mapping that hides the C
(un)marshalling and caching and re-construction of CCB operations.
---
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