Hi, I'm in the process of writing the cartridge agent in Python. When executing the extensions on tenant event listeners, specifically SubscriptionDomainAddedEvent and SubscriptionDomainRemovedEvent, tenant domain name should be passed as parameters. Currently CartridgeAgent gets the tenant information from TenantManager which collects tenant information through the event listener model in messaging.
At this point, I'm stuck at how to get the tenant information for a given tenant ID in Python Cartridge Agent. I could execute a REST call to get the tenant details[1], but it will involve iterating through the list of tenants provided. And, it is a deviation from the design the current agent follows. Second option is to implement a message processing queue, which is the approach in the Java cartridge agent, in Python and maintain a tenant information context, which would hold all the tenants' details. Third option is to simply listen to the TenantCreatedEvent/TenantSubscribedEvent and add the tenant data to a tenant information context. The added information should also be removed at a TenantRemovedEvent/TenantUnsubscribedEvent. I'm inclined to follow the third approach, which is much more simpler, and works naturally with the Paho mqtt library that is used for communication in Python cartridge agent. WDYT? [1] - https://cwiki.apache.org/confluence/display/STRATOS/4.0.0+Listing+Tenants Regards, Chamila de Alwis Software Engineer | WSO2 | +94772207163 Blog: code.chamiladealwis.com
