Azure Iothub's event hub compatible connection string - azure

Question

I am trying to fetch the Event hub compatible connection string in ARM template and then pass it on to my HDInsight Cluster for further processing.
I am trying to create the event hub connectiong string of my choice, But the event hub name generated is not the same and consists of a guid whose source I am unable to track.
I need the to list and pass the event hub connection string to HDInsight script action within the template.
The endpoint part in the iothub resource is where I customize the event hub compatible connection string.
"resources": [
{
"type": "Microsoft.Devices/IotHubs",
"sku": {
"name": "S1",
"tier": "Standard",
"capacity": 1
},
"name": "[variables('IotHub')]",
"apiVersion": "2016-02-03",
"location": "southeastasia",
"tags": {},
"properties": {
"ipFilterRules": [],
"eventHubEndpoints": {
"events": {
"retentionTimeInDays": 4,
"partitionCount": 4,
"partitionIds": [
"0",
"1",
"2",
"3"
],
"path": "[variables('IotHub')]",
"endpoint": "[concat('sb://', variables('IotHub'),'.servicebus.windows.net/')]"
}
},
"storageEndpoints": {
"$default": {
"sasTtlAsIso8601": "PT1H",
"connectionString": "",
"containerName": ""
}
},
"enableFileUploadNotifications": false,
"cloudToDevice": {
"maxDeliveryCount": 10,
"defaultTtlAsIso8601": "PT1H",
"feedback": {
"lockDurationAsIso8601": "PT1M",
"ttlAsIso8601": "PT1H",
"maxDeliveryCount": 10
}
},
"operationsMonitoringProperties": {
"events": {
"None": "None",
"Connections": "None",
"DeviceTelemetry": "None",
"C2DCommands": "None",
"DeviceIdentityOperations": "None",
"FileUploadOperations": "None"
}
},
"features": "None"
},
"resources": [],
"dependsOn": []
}
],

Answer 1

You can't set the values for the Event Hub-compatible name or Event Hub-compatible endpoint for an IoT Hub, these values are generated when the hub is created. However, you can access these values in an ARM template. The following snippet from the "outputs" section of a template that creates an IoT hub illustrates the syntax to use:
"outputs": {
"eventHubCompatibleEndpoint": {
"type": "string",
"value": "[reference(resourceId('Microsoft.Devices/IoTHubs',parameters('hubName'))).eventHubEndpoints.events.endpoint]"
},
"eventHubCompatibleName": {
"type": "string",
"value": "[reference(resourceId('Microsoft.Devices/IoTHubs',parameters('hubName'))).eventHubEndpoints.events.path]"
}
}