Hi Nirmal,
Thanks - this was helpful,
actually the ServiceCreatedMessageProcessor.process method does seem to set
the properties when it creates the Service class, not sure if it was on purpose
or a bug.
Another thing I noticed is that after unsubscribing and undeploying a cartridge
the complete topology event still shows the unsubscribed / undeployed
cartridges ( although not the cli tool / list-cartridges), even after
restarting all stratos processes, seems like the db still references it ?
Thanks
Martin
ServiceCreatedMessageProcessor
public boolean process(String type, String message, Object object) {
...
Service service = new Service(event.getServiceName(), event.getServiceType());
service.addPorts(event.getPorts());
topology.addService(service);
if (log.isInfoEnabled()) {
log.info(String.format("Service created: [service] %s",
event.getServiceName()));
}
notifyEventListeners(event);
return true;
...
}
From: Nirmal Fernando [mailto:[email protected]]
Sent: Monday, March 17, 2014 9:10 PM
To: [email protected]
Subject: Re: Question: Setting a property on a service instance (adding a
property to a cartridge)
Hi Martin,
On Mon, Mar 17, 2014 at 7:30 PM, Martin Eppel (meppel)
<[email protected]<mailto:[email protected]>> wrote:
Hi,
I am experimenting with some stratos code to add a property to a cartridge (or
service) which I can later retrieve from a service instance.
Service.java (in org.apache.stratos.messaging.domain.topology) has
getter/setter for properties but I have a hard time to figure out the flow /
code where properties are actually retrieved from the cartridge definition
(json) and set at the service instance (e.g. when subscribing to a cartridge).
The idea is to add a new property to a cartridge json definition (see example
below), assign it to a service instance and retrieve it in the context of
autoscaler rules. Is there a better way to define properties at the service
level ?
Cartridge's properties should be available under
org.apache.stratos.messaging.domain.topology.Service's properties. If not it's
a bug :-)
Also, another question is: I can see in the code that there is
ServiceCreatedEvent which I would assume would be generated and handled when
subscribing a cartridge (= service ?) but it seems that no such event is being
processed ? (- however I do see the ClusterCreatedEvent being created and
processed). When is ServiceCreatedEvent generated ?
ServiceCreatedEvent generated when you deploy a new Cartridge.
org.apache.stratos.messaging.event.topology.ServiceCreatedEvent.ServiceCreatedEvent(String,
ServiceType)
|_org.apache.stratos.cloud.controller.topology.TopologyEventPublisher.sendServiceCreateEvent(List<Cartridge>)
|_org.apache.stratos.cloud.controller.topology.TopologyBuilder.handleServiceCreated(List<Cartridge>)
|_org.apache.stratos.cloud.controller.impl.CloudControllerServiceImpl.deployCartridgeDefinition(CartridgeConfig)
Any pointers are highly appreciated
Thanks
Martin
....
"property": [
{
"name": "dependencies",
"value": "service_name"
}
...
]
--
Best Regards,
Nirmal
Nirmal Fernando.
PPMC Member & Committer of Apache Stratos,
Senior Software Engineer, WSO2 Inc.
Blog: http://nirmalfdo.blogspot.com/
