Azure IoT event subscription with ARM template - windows

Question

I am trying to deploy Azure IoT device connected event subscription to Azure storage queue using ARM template and PowerShell. I have used the following template for deploying this. Also, I have read a lot of articles on Microsoft. But could not find any solution. Please help me to figure it out.
"resources": [
{
"type": "Microsoft.EventGrid/eventSubscriptions",
"name": "DeviceConnected",
"location": "[resourceGroup().location]",
"apiVersion": "2018-01-01",
"dependsOn": [
"[resourceId('Microsoft.Devices/IotHubs', variables('iotHubName'))]"
],
"properties": {
"destination": {
"endpointType": "storagequeue",
"properties": {
"queueName":"device-connnection-state-queue",
"resourceId": "[resourceId('Microsoft.Storage/storageAccounts', variables('storageName'))]"
}
},
"filter": {
"includedEventTypes": [
"Microsoft.Devices.DeviceConnected"
]
}
}
}
],
The error is showing like

Answer 1

The error you're seeing is related to the dependsOn property you've specified.
From MS documentation
Resources that must be deployed before this resource is deployed. Resource Manager evaluates the dependencies between resources and deploys them in the correct order. When resources aren't dependent on each other, they're deployed in parallel. The value can be a comma-separated list of a resource names or resource unique identifiers. Only list resources that are deployed in this template. Resources that aren't defined in this template must already exist. Avoid adding unnecessary dependencies as they can slow your deployment and create circular dependencies. For guidance on setting dependencies, see Defining dependencies in Azure Resource Manager templates.
So a resource that is not defined in an ARM template cannot be used in a DependsOn property.
Here is the documentation related to event subscription creation:
Microsoft.EventGrid eventSubscriptions template reference
There are not so much samples on how to create event subscription but you can extract some part of the template from the Azure Portal:
Click + Event Subscription
Fill in the details
Click the Advanced Editor button link on the top right corner
It will show you some of the details you need to create your ARM Template
Here is how a sample ARM template can look likes:
"resources": [
{
"type": "Microsoft.Devices/IotHubs/providers/eventSubscriptions",
"apiVersion": "2019-01-01",
"name": "[concat(parameters('iotHubName'), '/Microsoft.EventGrid/', parameters('eventSubName'))]",
"location": "[resourceGroup().location]",
"properties": {
"topic": "[resourceId('Microsoft.Devices/IotHubs', parameters('iotHubName'))]",
"destination": {
"endpointType": "StorageQueue",
"properties": {
"resourceId": "[resourceId('Microsoft.Storage/storageAccounts', parameters('storageAccountName'))]",
"queueName": "[parameters('queueName')]"
}
},
"filter": {
"includedEventTypes": [
"Microsoft.Devices.DeviceConnected"
],
"advancedFilters": []
},
"labels": [],
"eventDeliverySchema": "EventGridSchema"
}
}
]