Terraform - Creating Azure Event Grid Subscriptions - can it do it? - azure

Question

I've been struggling for a while in Terraform to create an Event Subscription in an Azure Event Grid
As-per screenshot....
EVENT SUBSCRIPTION DETAILS
NAME : EventGrid-Sub1
(don't need to change Event Schema)
TOPIC DETAILS
Event Grid Domain
Topic Resource: EDG-SBX-EventGrid1
Domain Type: EventGrid-DomainTopic1
ENDPOINT DETAILS
Endpoint Type: Event Hubs
Endpoint : eh-sbx-Ingestion
I've been using these as reference, but it seems not only a bit chicken-and-egg, but pieces missing?
https://www.terraform.io/docs/providers/azurerm/r/eventgrid_event_subscription.html
https://www.terraform.io/docs/providers/azurerm/r/eventgrid_topic.html
Has anyone got this working in Terraform?
Thanks in advance
Azure Screenshot on Event Grids / Create Event Subscription screen

Answer 1

#nmca70 There are a couple of ways to achieve this:
Create an ARM template from the final deployment and then run that ARM template using Terraform:
https://www.terraform.io/docs/providers/azurerm/r/template_deployment.html
Create resources in the below order:
Azure event hub: https://www.terraform.io/docs/providers/azurerm/r/eventhub.html
Azure event grid topic: https://www.terraform.io/docs/providers/azurerm/r/eventgrid_topic.html
Azure event grid domain: https://www.terraform.io/docs/providers/azurerm/r/eventgrid_domain.html
Azure event grid subscription: https://www.terraform.io/docs/providers/azurerm/r/eventgrid_event_subscription.html#storage_queue_endpoint
A sample:
resource "azurerm_resource_group" "test" {
name = "resourceGroup1"
location = "West US 2"
}
resource "azurerm_eventhub_namespace" "test" {
name = "acceptanceTestEventHubNamespace"
location = "${azurerm_resource_group.test.location}"
resource_group_name = "${azurerm_resource_group.test.name}"
sku = "Standard"
capacity = 1
kafka_enabled = false
tags = {
environment = "Production"
}
}
resource "azurerm_eventhub" "test" {
name = "acceptanceTestEventHub"
namespace_name = "${azurerm_eventhub_namespace.test.name}"
resource_group_name = "${azurerm_resource_group.test.name}"
partition_count = 2
message_retention = 1
}
resource "azurerm_eventgrid_topic" "test" {
name = "my-eventgrid-topic"
location = "${azurerm_resource_group.test.location}"
resource_group_name = "${azurerm_resource_group.test.name}"
tags = {
environment = "Production"
}
}
resource "azurerm_eventgrid_domain" "test" {
name = "my-eventgrid-domain"
location = "${azurerm_resource_group.test.location}"
resource_group_name = "${azurerm_resource_group.test.name}"
input_schema = "eventgridschema"
input_mapping_fields= {
topic = "my-eventgrid-topic"
}
tags = {
environment = "Production"
}
}
resource "azurerm_eventgrid_event_subscription" "default" {
name = "defaultEventSubscription"
scope = "${azurerm_resource_group.default.id}"
event_delivery_schema = "EventGridSchema"
topic_name = "my-eventgrid-topic"
eventhub_endpoint {
storage_account_id = "${azurerm_eventhub.test.id}"
}
}
Hope this helps!