[Ace-users] Re: [ciao-users] Component stoping with Dance

[James, Steven]

Hi Gan,

Looking at the
http://www.omg.org/news/meetings/workshops/RT_2006_Workshop_CD/071_Deng_
eta.pdf

I could use Add_instance and remove_instance?

Is ReDaC part of the OMG's D&C standard? And what version of CIAO is
this part of I can't see it within 0.5.10? 

Furthermore, how redundant are the ReDaC and Dance demons i.e. what
happens if a NodeManager dies for instance? Is this documented anywhere?

Thanks for your help,

Steve

-----Original Message-----
From: ciao-users-bounces at cse.wustl.edu
[mailto:ciao-users-bounces at cse.wustl.edu] On Behalf Of Gan Deng
Sent: Montag, 3. September 2007 17:58
To: CIAO Users Mailing List
Subject: Re: [ciao-users] Component stoping with Dance

Hi Steve,

Please take a look at the tutorial about ReDaC at:

http://www.dre.vanderbilt.edu/~schmidt/DOC_ROOT/CIAO/examples/Hello/ReDa
C-Usage.html

The example about the above tutorial can be found with the CIAO release.

 >> I have looked at the deployment idl files and am guessing that to
stop
 >> it I could use
 >>
 >> Targetmanager-->getManager()-->get_node_app()-->remove
 >>
 >> What is the result of this call?
 >> How is a restart performed?

The above way only provides a way to remove a component, which is 
typically useful standalone components in an application, since it does 
not take care of the connections with peer components.

In your case, you can use ReDaC to perform your task in two steps, i.e.,

remove the component first from the deployment plan, and then reinstall 
the component into the deployment plan.

Please let me know if you have any questions.

Thanks,
Gan

Sowayan, Abdullah (N-DUA) wrote:
> Hi Steve,
> 
> I believe there is something called Redeployment and Configuration
> Engine (ReDAC) in CIAO. Please check the following presentation. 
> 
>
http://www.omg.org/news/meetings/workshops/RT_2006_Workshop_CD/07-1_Deng
> _etal.pdf
> 
> Thanks,
> Abdul
> 
> 
>> -----Original Message-----
>> From: ciao-users-bounces at cse.wustl.edu [mailto:ciao-users-
>> bounces at cse.wustl.edu] On Behalf Of James, Steven
>> Sent: Monday, September 03, 2007 11:03 AM
>> To: CIAO Users Mailing List
>> Subject: [ciao-users] Component stoping with Dance
>>
>> Hi Group,
>>
>> I have a couple of questions relating to component control which I
> hope
>> the group can resolve.
>>
>> Background
>> ==========
>>
>> We need to be able to stop and start specific CCM components for
> example
>> if a composed component had three elements all of which run in their
> own
>> process space or (NodeApplication). These components maybe on the
same
>> or different physical host. Assume that the components are a logger,
>> data archiver and event distributor. If we want to restart the data
>> archiver say due to an error or because the component has gone into a
>> non nominal state. We do not want to stop the logger and event
>> distributor as they are being used by other system components. What
is
>> the best way to achieve this? Bearing in mind this needs to be done
> from
>> a monitoring and control MMI application.
>>
>> I have looked at the deployment idl files and am guessing that to
stop
>> it I could use
>>
>> Targetmanager-->getManager()-->get_node_app()-->remove
>>
>> What is the result of this call?
>> How is a restart performed?
>> If it can be done like this does the target manager store its IOR in
> NS
>> or TradingService?
>>
>> Many Thanks,
>>
>> Steve.
>>
>>
>>
>>
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