Create and delete routes and endpoints by using Azure PowerShell

This article shows you how to create a route and endpoint in your hub in Azure IoT Hub and then delete your route and endpoint. Learn how to use Azure PowerShell to create routes and endpoints for Azure Event Hubs, Azure Service Bus queues and topics, and Azure Storage.

To learn more about how routing works in IoT Hub, see Use IoT Hub message routing to send device-to-cloud messages to different endpoints. To walk through setting up a route that sends messages to storage and then testing on a simulated device, see Tutorial: Send device data to Azure Storage by using IoT Hub message routing.

Prerequisites

The procedures that are described in the article use the following resources:

• Azure PowerShell
• An IoT hub
• An endpoint service in Azure

Azure PowerShell

This article uses Azure PowerShell to work with IoT Hub and other Azure services. To use Azure PowerShell locally, install the Azure PowerShell module on your computer. Alternatively, to use Azure PowerShell in a web browser, enable Azure Cloud Shell.

IoT hub

To create an IoT hub route, you need an IoT hub that you created by using Azure IoT Hub. Device messages and event logs originate in your IoT hub.

Be sure to have the following hub resource to use when you create your IoT hub route:

• An IoT hub in your Azure subscription. If you don't have a hub yet, you can follow the steps to create an IoT hub by using the New-AzIotHub PowerShell cmdlet.

Endpoint service

To create an IoT hub route, you need at least one other Azure service to use as an endpoint to the route. The endpoint receives device messages and event logs. You can choose which Azure service you use for an endpoint to connect with your IoT hub route: Event Hubs, Service Bus queues or topics, or Azure Storage.

Be sure to have one of the following resources to use when you create an endpoint your IoT hub route:

• An Event Hubs resource (with container). If you need to create a new Event Hubs resource, see Quickstart: Create an event hub by using Azure PowerShell.

• A Service Bus queue resource. If you need to create a new Service Bus queue, see Use Azure PowerShell to create a Service Bus namespace and queue.

• A Service Bus topic resource. If you need to create a new Service Bus topic, see the New-AzServiceBusTopic reference and the Azure Service Bus messaging documentation.

• An Azure Storage resource. If you need to create a new storage account in Azure, see Create a storage account.

Create resources and endpoints

In IoT Hub, you can create a route to send messages or capture events. Each route has a data source and an endpoint. The data source is where messages or event logs originate. The endpoint is where the messages or event logs end up. You choose locations for the data source and endpoint when you create a new route in your IoT hub. Then, you use routing queries to filter messages or events before they go to the endpoint.

You can use an event hub, a Service Bus queue or topic, or a storage account to be the endpoint for your IoT hub route. The service that you use to create your endpoint must first exist in your Azure account.

Note

If you use a local version of Azure PowerShell, sign in to Azure PowerShell before you begin.

Event Hubs

The commands in the following procedures use these references:

• Az.IotHub
• Az.EventHub

Create an event hub

To create a new Event Hubs resource that has an authorization rule:

1. Create a new Event Hubs namespace. For NamespaceName, use a unique value.

   New-AzEventHubNamespace -ResourceGroupName MyResourceGroup -NamespaceName MyNamespace -Location MyLocation
   

2. Create your new Event Hubs entity. For Name, use a unique value. For NamespaceName, use the name of the namespace you created in the preceding step.

   New-AzEventHub -Name MyEventHub -NamespaceName MyNamespace -ResourceGroupName MyResourceGroup
   

3. Create a new authorization rule. For Name, use the name of your entity for EventHubName. For the name of your authorization rule, use a unique value.

   New-AzEventHubAuthorizationRule -ResourceGroupName MyResourceGroup -NamespaceName MyNamespace -EventHubName MyEventHub -Name MyAuthRule -Rights @('Manage', 'Send', 'Listen')
   

   For more information about access, see Authorize access to Azure Event Hubs.

Create an Event Hubs endpoint

1. Get the primary connection string from your event hub. Copy the connection string to use later.

   Get-AzEventHubKey -ResourceGroupName MyResourceGroup -NamespaceName MyNamespace -EventHubName MyEventHub -Name MyAuthRule
   

2. Create a new IoT hub endpoint to Event Hubs. Use your primary connection string from the preceding step. The value for EndpointType must be EventHub. For all other parameters, use the values for your scenario.

   Add-AzIotHubRoutingEndpoint -ResourceGroupName MyResourceGroup -Name MyIotHub -EndpointName MyEndpoint -EndpointType EventHub -EndpointResourceGroup MyResourceGroup -EndpointSubscriptionId xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx -ConnectionString "Endpoint=<my connection string>"
   

   To see all routing endpoint options, see Add-AzIotHubRoutingEndpoint.

Service Bus queue

The commands in the following procedures use these references:

• Az.IotHub
• Az.ServiceBus

Create a Service Bus namespace and queue

To create a new Service Bus queue resource:

1. Create a new Service Bus namespace. For Name, use a unique value.

   New-AzServiceBusNamespace -ResourceGroupName MyResourceGroup -Name MyNamespace -Location MyRegion
   

2. Create a new Service Bus queue. For NamespaceName, use the name of the namespace you created in the preceding step. For the name of your queue, use a unique value.

   New-AzServiceBusQueue -ResourceGroupName MyResourceGroup -NamespaceName MyNamespace -Name MyQueue
   

Create a Service Bus queue endpoint

To create a new Service Bus queue endpoint:

1. Retrieve the primary connection string from your Service Bus namespace. Copy the connection string to use later.

   Get-AzServiceBusKey -ResourceGroupName MyResourceGroup -Namespace MyNamespace -Name RootManageSharedAccessKey
   

2. Create a new IoT hub endpoint to your Service Bus queue. Use your primary connection string from the preceding step with ;EntityPath=MyServiceBusQueue added to the end. The value for EndpointType must be ServiceBusQueue. For all other parameters, use the values for your scenario. For EndpointName, use a unique value.

   Add-AzIotHubRoutingEndpoint -ResourceGroupName MyResourceGroup -Name MyIotHub -EndpointName MyEndpoint -EndpointType EventHub -EndpointResourceGroup MyResourceGroup -EndpointSubscriptionId xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx -ConnectionString "Endpoint=my-connection-string;EntityPath=MyServiceBusQueue"
   

   For a list of all routing endpoint options, see Add-AzIotHubRoutingEndpoint.

Service Bus topic

The commands in the following procedures use these references:

• Az.IotHub
• Az.ServiceBus

With Service Bus topics, users can subscribe to one or more topics. To create a topic, you also create a Service Bus namespace and subscription.

Create a Service Bus namespace, topic, and subscription

1. Create a new Service Bus namespace. For Name for your namespace, use a unique value.

   New-AzServiceBusNamespace -ResourceGroupName MyResourceGroup -Name MyNamespace -Location MyRegion
   

2. Create a new Service Bus topic. For the topic name, use a unique value.

   New-AzServiceBusTopic -ResourceGroupName MyResourceGroup -NamespaceName MyNamespace -Name MyTopic
   

3. Create a new subscription to your topic. For TopicName, use the name of the topic you created in the preceding step. For your subscription name, use a unique value.

   New-AzServiceBusSubscription -ResourceGroupName MyResourceGroup -NamespaceName MyNamespace -TopicName MyTopic -Name MySubscription
   

Create a Service Bus topic endpoint

1. Retrieve the primary connection string from your Service Bus namespace. Copy the connection string to use later.

   Get-AzServiceBusKey -ResourceGroupName MyResourceGroup -Namespace MyNamespace -Name RootManageSharedAccessKey
   

2. Create a new IoT hub endpoint to your Service Bus topic. Use your primary connection string from the preceding step with ;EntityPath=MyServiceBusTopic added to the end. The value for EndpointType must be ServiceBusTopic. For all other parameters, use the values for your scenario. For EndpointName, use a unique value.

   Add-AzIotHubRoutingEndpoint -ResourceGroupName MyResourceGroup -Name MyIotHub -EndpointName MyEndpoint -EndpointType ServiceBusTopic -EndpointResourceGroup MyResourceGroup -EndpointSubscriptionId xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx -ConnectionString "Endpoint=<my connection string>;EntityPath=MyServiceBusTopic"
   

   For a list of all routing endpoint options, see Add-AzIotHubRoutingEndpoint.

Azure Storage

The commands in the following procedures use these references:

• Az.IotHub
• Az.Storage

To create an Azure Storage endpoint and route, you need a Storage account and container.

Create an Azure Storage account and container

1. Create a new Azure Storage account. The value of Name for your storage account can contain only lowercase letters and numbers. For SkuName options, see SkuName.

   New-AzStorageAccount -ResourceGroupName MyResourceGroup -Name mystorageaccount -Location westus -SkuName Standard_GRS
   

2. Create a new container in your storage account. You need to create a context to your storage account in a variable, and then add the variable to the Context parameter. To learn about your options when you create a container, see Manage blob containers by using PowerShell. For Name, use a unique value for the name of your container.

   $ctx = New-AzStorageContext -StorageAccountName mystorageaccount -UseConnectedAccount `
   New-AzStorageContainer -Name ContainerName -Context $ctx
   

Create an Azure Storage endpoint

To create an endpoint to Azure Storage, you need your access key to construct a connection string. The connection string is then part of the IoT Hub command to create an endpoint.

1. Retrieve your access key from your storage account, and then copy it.

   Get-AzStorageAccountKey -ResourceGroupName MyResourceGroup -Name mystorageaccount
   

2. Construct a primary connection string for your storage account based on the following template. Replace mystorageaccount (in two places) with the name of your storage account. Replace mykey with your key from the preceding step.

   "DefaultEndpointsProtocol=https;BlobEndpoint=https://mystorageaccount.blob.core.windows.net;AccountName=mystorageaccount;AccountKey=mykey"
   

   This connection string is required in the step to create the endpoint.

3. Create your Azure Storage endpoint with the connection string you constructed. EndpointType must have the value azurestorage. For all other parameters, use the values for your scenario. For EndpointName, use a unique value.

   Add-AzIotHubRoutingEndpoint -ResourceGroupName MyResourceGroup -Name MyIotHub -EndpointName MyEndpoint -EndpointType azurestorage -EndpointResourceGroup MyResourceGroup -EndpointSubscriptionId xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx -ConnectionString "my connection string"
   

4. When you're prompted for your container name, enter your container name, and then select Enter to create the endpoint.

Create an IoT Hub route

With your new endpoint in your IoT hub, you can create a new route.

The default fallback route in IoT Hub collects messages from DeviceMessages. Choose a different option for your custom route, such as DeviceConnectionStateEvents. For more information about source options, see Add-AzIotHubRoute. The Enabled parameter is a switch, so you don't need to use a value with the parameter.

Add-AzIotHubRoute -ResourceGroupName MyResourceGroup -Name MyIotHub -RouteName MyRoute -Source DeviceLifecycleEvents -EndpointName MyEndpoint -Enabled

PowerShell displays a confirmation that looks similar to this example:

RouteName     : MyIotHub 
DataSource    : DeviceLifecycleEvents
EndpointNames : MyEndpoint
Condition     : true
IsEnabled     : True

Update an IoT Hub route

To make changes to an existing route, use the following command. For example, try changing the name of your route by using the command.

Set-AzIotHubRoute -ResourceGroupName MyResourceGroup -Name MyIotHub -RouteName MyRoute

Use the Get-AzIotHubRoute command to confirm the change in your route:

Get-AzIotHubRoute -ResourceGroupName MyResourceGroup -Name MyIotHub

Delete an endpoint

To delete an endpoint:

Remove-AzIotHubRoutingEndpoint -ResourceGroupName MyResourceGroup -Name MyIotHub -EndpointName MyEndpoint -PassThru

Delete an IoT Hub route

To delete an IoT Hub route:

Remove-AzIotHubRoute -ResourceGroupName MyResourceGroup -Name MyIotHub -RouteName MyRoute -PassThru

Tip

Deleting a route doesn't delete any endpoints in your Azure account. You must delete an endpoint separately from deleting a route.

Next steps

In this how-to article, you learned how to create a route and endpoint for Event Hubs, Service Bus queues and topics, and Azure Storage.

To learn more about message routing, see Tutorial: Send device data to Azure Storage by using IoT Hub message routing. In the tutorial, you create a storage route and test it with a device in your IoT hub.