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Date: Mon, 19 Oct 2009 10:12:42 -0700 (PDT)
From: xinfang <pclovec@gmail.com>
To: users@qpid.apache.org
Message-ID: <1255972362357-3850330.post@n2.nabble.com>
Subject: QMF-agent logic.
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now I review the QMF Agent part code . and try to understand the logic.
before I thought I need to write a agent code to implement my require ,my
require want to get Queue's byteTotalEnqueues and byteTotalDequeues data.=
=20
but i found out in the broker side code , there have a default agent code i=
s
implement it. I only need to go to understand how to uses agent to get data=
=20
, before I uses console can get data but not get sync real time queue info
data.=20

-------------  1 -----------------------------------------
in cpp/src/gen/qmf/org/apache/qpid/broker have  these class
Queue.cpp
EventQueueDeclare.cpp

ManagementObject is base object for broker even , Queue is inherit
ManagementObject class. and Queue need to implement writeProperties and
writeStatistics function . beucase two function will be return data to
client.

**** I thought these class are integration in broker side. and register the
event. when Client invoke the method.

but when I go to looking at QMF-agent sample code ,I also found out in
example subdirectory have same sample class=20
child.h=20
EventChildCreated.cpp
it also inherit ManagermentObject class, it return some objecid count info.=
=20
and example.cpp to register the child object and return the data.

**** if qmf-agent sample is client side , then Queue.cpp and child.cpp are
not integration in broker . only client to implement them. so if I want to
write a new agent to return some data. we need to do=20

1. write a class to inherit managementobject.  such as Child.h /Queue.h
(this step we can define a xml scheme to create the class)
2. write some relationship classes ,such as
EventQueueDeclare/EventChildCreate  , EventQueueDestroyed and
EventQueueDelete.etc...
3. write some Wrapper classes to register and bind to Queue or child class
.(this step I didn't understand)
4. write some class get data or write a console to get data.=20

Would that steps are correct?

-------------  2 -----------------------------------------
cpp/src/qpid/agent folder

this folder class is agent API  for client. in my mind: client uses this
class register the class and event,  uses give the namespace which class is
register.=20


Does console is base on agent.? In my mind I think it=E2=80=99s=20


--=20
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