i am trying to trigger a java function each time my IoT Hub receives a batch of 64 messages (or whatever, the number is not important). I followed this guide to create the basic code, then i edited creating this function
public class Function {
@FunctionName("ProcessIotMessages")
public void processIotMessages(
@EventHubTrigger(name = "message",
eventHubName = "samples-workitems",
connection = "HUB-1544-DEV_events_IOTHUB") List<String> messages,
final ExecutionContext context) {...Function Logic...}
}
The connection parameter is the IoT Hub connection string in formatted as event hub compatible endpoint (e.g. Endpoint=sb://iothub-hostname-blablabla).
I package and deploy this code with maven plugins specified in the guide linked above. The deploys works fine, i can see mi function up and running with no errors from the portal, the HUB-1544-DEV_events_IOTHUB setting app is correctly created with the correct connection string.
The only strange thing i notice in the portal is in the trigger blade. As you can see, cardinality is One, while it should be set to many, since i did not specify the cardinality parameter in the function. The default one is many according to this guide. This makes me think that i not being able to pass the correct trigger syntax.
Anyway, the problem is that this function is not starting either from my local machine or the portal. Any suggestions? Thx
