[SNMP4J] Threading structure in TestAgent/BaseAgent

[Frank Fock]

If your agent should run for a specified time
only, you could also use Thread.sleep only.

Frank

pradip de wrote:
> Ok. Sorry if I wasnt able to point to the right place. I was using the 
> TestAgent.java from 
> (http://kickjava.com/src/org/snmp4j/agent/test/TestAgent.java.htm) and 
> noticed the while(true) with a sleep(1000) loop in its line 338 in the 
> main function which seems like a busy wait. My question was regarding 
> the motivation for this infinite loop to prevent the main agent thread 
> from exiting. Is this specifically because the listen() was deliberately 
> not made blocking? Is there a better way than using this infinite loop?
> thanks,
> Pradip  
> 
> On Fri, Aug 28, 2009 at 2:34 PM, Frank Fock <fock at agentpp.com 
> <mailto:fock at agentpp.com>> wrote:
> 
> 
>     Hi Pradip,
> 
>     Session.listen() does not block.
>     The rest of you assumptions do not match
>     with SNMP4J either and I am a bit confused
>     about them. Please read RFC 3410 to 3418
>     to get a better understanding of the
>     SNMP architecture.
> 
>     Best regards,
>     Frank
> 
>     pradip de wrote:
> 
>         Hi,
>         I am trying to understand the threading structure of
>         TestAgent.java for my
>         own implementation of an SNMP agent. My question is basically
>         regarding the
>         busy wait that is there with a periodic Thread.sleep(). Why
>         doesnt the
>         BaseAgent have a while(true) loop around the session.listen() (
>         which I
>         believe is a blocking function on incoming requests ) instead of
>         the busy
>         wait in TestAgent? Or am I missing something here? There must be
>         a listening
>         mechanims in a loop somewhere that allows the agent to respond
>         to multiple
>         SNMP requests.
>         As an associated question, I am trying to have my TestAgent
>         implement a
>         listener to a messagequeue to send traps out. However, it maybe
>         getting
>         blocked by the busy wait in the main thread.
>         I would really appreciate if someone could clarify these points
>         for me and
>         give me suggestions on how to make the agent also be a
>         subscriber to some
>         published queueing mechanism to pick up messages for sending
>         traps out.
> 
>         thanks,
>         Pradip
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> 
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