Azure EventHub Consume and Trigger task: checkpointStoreProperties marked as not required, but the task fails if this attribute is not present

[shrutimantri]

Expected Behavior

For Azure EventHub Consume and Trigger task, checkpointStoreProperties should either be a required field, OR if it marked not required, then the task should succeed when this property is absent.

Actual Behaviour

When checkpointStoreProperties is not provided, we get the following error:

2024-03-25 15:23:51.395 Invalid URL format. URL: null
2024-03-25 15:23:51.395 Cannot invoke "String.length()" because "<parameter2>" is null
Cannot invoke "String.length()" because "<parameter2>" is null
2024-03-25 15:23:51.395 java.lang.IllegalArgumentException: Invalid URL format. URL: null
	at com.azure.storage.blob.BlobUrlParts.parse(BlobUrlParts.java:349)
	at com.azure.storage.blob.implementation.util.BuilderHelper.httpsValidation(BuilderHelper.java:188)
	at com.azure.storage.blob.implementation.util.BuilderHelper.buildPipeline(BuilderHelper.java:119)
	at com.azure.storage.blob.BlobContainerClientBuilder.buildAsyncClient(BlobContainerClientBuilder.java:163)
	at io.kestra.plugin.azure.eventhubs.client.EventHubClientFactory.createBlobContainerAsyncClient(EventHubClientFactory.java:146)
	at io.kestra.plugin.azure.eventhubs.Consume.getBlobCheckpointStore(Consume.java:217)
	at io.kestra.plugin.azure.eventhubs.Consume.run(Consume.java:141)
	at io.kestra.plugin.azure.eventhubs.Consume.run(Consume.java:117)
	at io.kestra.plugin.azure.eventhubs.Consume.run(Consume.java:48)
	at io.kestra.core.runners.Worker$WorkerThread.run(Worker.java:710)
Caused by: java.net.MalformedURLException: Cannot invoke "String.length()" because "<parameter2>" is null
	at java.base/java.net.URL.<init>(Unknown Source)
	at java.base/java.net.URL.<init>(Unknown Source)
	at java.base/java.net.URL.<init>(Unknown Source)
	at com.azure.storage.blob.BlobUrlParts.parse(BlobUrlParts.java:347)
	... 9 more
Caused by: java.lang.NullPointerException: Cannot invoke "String.length()" because "<parameter2>" is null
	... 13 more

Steps To Reproduce

1. Run the flow provided in the Example Flow. (Ensure you do not add checkpointStoreProperties property)
2. Check the logs on executing this flow.

Environment Information

• Kestra Version: 0.15.5
• Plugin version: 0.15.5
• Operating System (OS / Docker / Kubernetes): Docker
• Java Version (If not docker):

Example flow

id: ConsumeDataEventsFromAzureEventHubs
namespace: company.team
tasks:
- id: consumeFromEventHubs
  type: io.kestra.plugin.azure.eventhubs.Consume
  eventHubName: <event-name>
  namespace: <eventhub-namespace>
  connectionString: "<connectionString>"
  bodyDeserializer: STRING
  consumerGroup: "$Default"