Re: Re: RE: Can I regist two instance providers for a same CIM class?

Hi Augustin :
Thank you for reply.My problem is,I'm using exsiting providers.For example,a provider implementing CMPI interface,it generates  CIM_AlertIndications when a process is killed. And another provider implementing C++ interface,it also generates CIM_AlertIndications when CPU load is over 90%. Now I want to get indications on both situation. That's why I want to regist two providers for the same CIM class.

Here's a part of an example registration file of sfcb:
ClassName              Namespace    ProviderName                            ProviderLibName                           ProviderType
CIM_InstModification root/cimv2 OSBase_OperatingSystemProvider cmpiOSBase_OperatingSystemProvider indication 

And here's part of log file of OpenWBEM:
[47992864481616]Registering provider c++::NovellHMS for cim_instcreation/*
[47992864481616]Registering provider c++::omc_linux_process for cim_instcreation/* 

Regards

2011-04-26 



huruifeng 



发件人： Kirk Augustin 
发送时间： 2011-04-26  11:42:37 
收件人： huruifeng; Sampige, Sahana Prabhakar (R&DBangalore); [email protected] 
抄送： 
主题： Re: RE: Can I regist two instance providers for a same CIM class? 
 
Hi Huruifeng,

It does not matter what kind of provider you might want to try having 2 of, it won't work.
If it could, it would be ambiguous.
When you register the 2nd provider, for the same purpose, it will over write the first.
I am not familiar with Small Footprint CIM Broker (SFCB), but it would make no sense for it allow 2 providers for the same class and purpose.
I have not actually tried to have a separate provider for say instances and methods, because there would be no reason to.
A method provider would also need to know about instances as well, so it is hard to see how it would be useful to separate them.
Nothing is gained by having more providers than the minimal necessary.
Often it is easiest to use one provider for many, many classes.
The provider is told what class it is being queried on, so there is no problem having fewer providers.
Think of each provider as an interface to a database.
You would not want a provider for each table in a database, but just one for the entire database.
You don't need another provider until you have a different database to also be able to connect to.


Kirk Augustin
11821 NW McNamee Rd
Portland, OR 97231






From: huruifeng <[email protected]>
To: "Sampige, Sahana Prabhakar (R&D Bangalore)" <[email protected]>; "[email protected]" <[email protected]>
Sent: Mon, April 25, 2011 8:03:27 PM
Subject: Re: RE: Can I regist two instance providers for a same CIM class?


Hi Sahana:
Here "two providers" you mean two instance providers? 
Now I hava two indication providers for CIM_AlertIndication,can I regist both of them like sfcb does?
And what about a instance provider and a method provider both for CIM_ComputerSystem?

Regards

2011-04-26 



huruifeng 



发件人： Sampige, Sahana Prabhakar (R&D Bangalore) 
发送时间： 2011-04-25  17:53:17 
收件人： huruifeng; [email protected] 
抄送： 
主题： RE: Can I regist two instance providers for a same CIM class? 
Hi Huruifeng,
You cannot register two providers for the same CIM class. But you could register one provider each for the CIM class hierarchy. When you enumerate the base class for example CIM_ManagedElement, instances for CIM_ManagedElement and its sub class like CIM_LogicalElement, CIM_Processor etc, will be returned.
Rgds,
Sahana

From: huruifeng [mailto:[email protected]] 
Sent: Monday, April 25, 2011 3:05 PM
To: [email protected]
Subject: Can I regist two instance providers for a same CIM class?

Hi:
Can I regist two instance providers for a same CIM class? 
If it is possible, which provider will be called when a getInstance request is recieved?

Regards

2011-04-25 



huruifeng