Questions on new service engine and job poller changes

[Brett Palmer]

*Adrian,

I’ve updated to the latest ofbiz code (revision 1374598) and trying to
setup our code to use the new changes to the service engine and job poller.


Here are a few questions:


1. Instantiating a new dispatcher to run a service.

We use to instantiate a LocalDispatcher to run a service with the following
code:

   LocalDispatcher olapDispatcher =
GenericDispatcher.getLocalDispatcher(“some dispatcher Name”, olapDelegator);


Now it looks like we have a Factor object that creates the dispatcher if
one is not already created with that name.  The method is
createLocallDispatcher but its not a static method and so a
GenericDispatcherFactory needs to be instantiated first.

  LocalDispatcher olapDispatcher =
GenericDispatcherFactory.createLocalDispatcher(dbConfig, olapDelegator);


How should I be instantiating the GenericDispatcherFactory or is there
preferred way to run a service from code?


2. Is the “wait-millis” attribute still required?  The service-config.xsd
still lists it as a required attribute for thread-pool but I don’t see it
reference anywhere in the code.  If it is needed how does it work?


3. If I understand the service configuration file, it looks like I can
configure the service engine to work against multiple pools (see example
config below).  If I wanted to run some services in specific pools can I
use the LocalDispatcher.scedule() method and just have an immediate time to
run but specify the pool I want them to use.

We need this functionality for our data warehouse processing.  We try to
provide real time reports but our database cannot handle a high number of
data warehouse updates during heavy loads.   By configuring only one server
to service a particular pool we can limit the number of concurrent
processes running those services.


       <thread-pool send-to-pool="pool"
                    purge-job-days="4"
                    failed-retry-min="3"
                    ttl="120000"
                    jobs="100"
                    min-threads="2"
                    max-threads="5"
                    wait-millis="1000"
                    poll-enabled="true"
                    poll-db-millis="30000">
           <run-from-pool name="pool"/>
           <run-from-pool name="dwPool"/>
       </thread-pool>

Thanks in advance for your help.  I’ll continue to test the new
configuration as soon as I can get these answers.


Brett*