Event Grid subscriptions and filters in Azure - Mini Project: Build & Apply

Event Grid Subscriptions and Filters

📖 Scenario: You are setting up an Azure Event Grid system to handle events from a storage account. You want to create subscriptions that only receive specific types of events to reduce unnecessary processing.

🎯 Goal: Build an Azure Event Grid subscription with filters that only allow events of a certain type to be delivered to a webhook endpoint.

📋 What You'll Learn

Create a variable with the event subscription name

Add a filter configuration to allow only 'BlobCreated' events

Create the Event Grid subscription with the filter and endpoint

Complete the subscription configuration with the correct scope and destination

💡 Why This Matters

🌍 Real World

Filtering events in Azure Event Grid helps reduce unnecessary processing and costs by delivering only relevant events to subscribers.

💼 Career

Cloud engineers and architects often configure event-driven architectures using Event Grid subscriptions and filters to build scalable and efficient systems.

1

Create the event subscription name variable

Create a variable called event_subscription_name and set it to the string "storageBlobCreatedSubscription".

Azure

# Create a variable called event_subscription_name and set it to "storageBlobCreatedSubscription"
# Your code here

Need a hint?

Use a simple assignment statement to create the variable with the exact string value.

2

Add a filter configuration for event types

Create a dictionary called filter_config with a key included_event_types set to a list containing the string "Microsoft.Storage.BlobCreated".

Azure

event_subscription_name = "storageBlobCreatedSubscription"
# Create a dictionary called filter_config with included_event_types set to ["Microsoft.Storage.BlobCreated"]
# Your code here

Need a hint?

Use a dictionary with the key exactly as included_event_types and the value as a list with one string.

3

Create the Event Grid subscription configuration

Create a dictionary called event_subscription_config with keys name, destination, and filter. Set name to event_subscription_name, destination to a dictionary with endpoint_type set to "WebHook" and endpoint_url set to "https://mywebhook.example.com/api/events", and filter set to filter_config.

Azure

event_subscription_name = "storageBlobCreatedSubscription"
filter_config = {"included_event_types": ["Microsoft.Storage.BlobCreated"]}
# Create event_subscription_config dictionary with name, destination, and filter keys
# Your code here

Need a hint?

Use nested dictionaries to represent the destination and include the filter dictionary as is.

4

Complete the subscription with scope and create command

Create a variable called scope and set it to the string "/subscriptions/12345678-1234-1234-1234-123456789abc/resourceGroups/myResourceGroup/providers/Microsoft.Storage/storageAccounts/mystorageaccount". Then create a dictionary called event_subscription_request with keys scope set to scope and properties set to event_subscription_config.

Azure

event_subscription_name = "storageBlobCreatedSubscription"
filter_config = {"included_event_types": ["Microsoft.Storage.BlobCreated"]}
event_subscription_config = {
    "name": event_subscription_name,
    "destination": {
        "endpoint_type": "WebHook",
        "endpoint_url": "https://mywebhook.example.com/api/events"
    },
    "filter": filter_config
}
# Create scope variable with the full resource ID string
# Create event_subscription_request dictionary with scope and properties keys
# Your code here

Need a hint?

Use the exact resource ID string for scope and nest the event_subscription_config under properties.