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PEP#102 Added readme.cmpi file

CMPI Providers in a nutshell
============================

Viktor Mihajlovski <mihajlov@de.ibm.com>
Nov 14th 2003

The Common Manageability Programming Interface (CMPI) has been integrated into
Pegasus as a pluggable provider manager.

CMPI must be enabled during Pegasus build.
For CMPI enablement, set the following environment variables prior to make:

   ENABLE_PROVIDER_MANAGER2=1
   ENABLE_CMPI_PROVIDER_MANAGER=1

If you plan to write your own CMPI providers you are kindly referred to the
WBEMSource homepage where the draft specification document for CMPI resides.
You can find at http://www.wbemsource.org/doc.tpl?CALLER=index.tpl&gdid=3712 .
If you are looking for samples you should have a look at the SBLIM project.
The packages prefixed by the string sblim-cmpi contain CMPI providers for
various classes. See http://www-124.ibm.com/developerworks/projects/sblim .

Once you have a CMPI provider library you want to register it with Pegasus.
How? Well it's almost the same as for C++ providers. The only difference is
that the Provider.Interface property must be set to "CMPI".

Here's an excerpt from the SBLIM Linux Computer System provider registration

// ===================================================================
// 	Linux_ComputerSystem
// ===================================================================


instance of PG_ProviderModule
{
   Name = "OSBase_ComputerSystemProviderModule";
   //The library name on disk
   Location = "cmpiOSBase_ComputerSystemProvider";
   Vendor = "SBLIM";
   Version = "1.2.2";
   InterfaceType = "CMPI";
   InterfaceVersion = "0.86.0";
};

instance of PG_Provider
{
   //The provider module as defined in PG_ProviderModule
   ProviderModuleName = "OSBase_ComputerSystemProviderModule";
   // The provider name as referenced in the code
   Name = "OSBase_ComputerSystemProvider";
};

instance of PG_ProviderCapabilities
{
   //The provider module as defined in PG_ProviderModule
   ProviderModuleName = "OSBase_ComputerSystemProviderModule";
   //The provider name as defined in PG_Provider
   ProviderName = "OSBase_ComputerSystemProvider";
   CapabilityID = "1";
   //Name of the CIM class as defined in the mof
   ClassName = "Linux_ComputerSystem";
   Namespaces = {"root/cimv2"};
   ProviderType = { 2,5 }; // Instance, Method
   SupportedProperties = NULL; // All properties
   SupportedMethods = NULL; // All methods
};