COSMOS Design 260735

Core resolver for directory services

This is the design document for bugzilla 260735.

Change History

Name:	Date:	Revised Sections:
Jeff Hamm	January 22, 2009	Initial version

Workload Estimation

Rough workload estimate in person weeks

Process	Sizing	Names of people doing the work
Design	1	Jeff Hamm, Brad Beck
Code	2	Jeff Hamm
Test	3	Jeff Hamm
Documentation	0
Build and infrastructure	0
Code review, etc.*	1
TOTAL	7

'* - includes other committer work (e.g. check-in, contribution tracking)

Purpose

This enhancement will provide a basic implementation of a resolver for the SDD Runtime that can process and resolve directory services as modeled in a SDD.

Requirements

• Based on the CIM type of CIM_Directory, the resolver must be able to recognize the type of directory system being utilized.
  • Typically, the operating system must be known in order to determine the proper method of utilizing and asking for directory services.
• The resolver must be able to provide a core set of property handlers.
  • The resolver must be able to check to see if a defined directory resource is readable.
  • The resolver must be able to determine if a defined directory resource is writable
  • The resolver must be able to determine if a defined directory resource exists.
• Interfaces to the class must adhere to a common api for existing in the Profile Module.

Design details

• "DirectoryResolver" will take the directory properties defined in the SDD and see if the conditions that are required can be satisfied.
  • This resolver will use other defined resources in topology of the SDD to validate the existance.
  • Resolution of directory services often will require other resources in topology to be resolved.

Impacts of this enhancement

• The SDD runtime will be able to interact with defined topology directory services and use this data to help in resolution of defined SDD resources and requirements on the defined service.