Dapr Pub/Sub resource

Learn how to use Dapr Pub/Sub in Radius

Overview

An Applications.Dapr/pubSubBrokers resource represents a Dapr pub/sub message broker.

Resource format


resource pubsub 'Applications.Dapr/pubSubBrokers@2023-10-01-preview' = {
  name: 'pubsub'
  properties: {
    environment: environment
    application: app.id
    recipe: {
      // Name a specific recipe to use
      name: 'azure-servicebus'
      // Set optional/required parameters (specific to the Recipe)
      parameters: {
        size: 'large'
      }
    }
  }
}


resource pubsub 'Applications.Dapr/pubSubBrokers@2023-10-01-preview' = {
  name: 'pubsub'
  properties: {
    environment: environment
    application: app.id
    resourceProvisioning: 'manual'
    type: 'pubsub.kafka'
    metadata: {
      brokers: {
        value: '<KAFKA-URL>'
      }
      authRequired: {
        value: false
      }
      consumeRetryInternal: {
        value: 1024
      }
    }
    version: 'v1'
  }
}

Top-level

Key Required Description Example
name y The name of the pub/sub. Names must contain at most 63 characters, contain only lowercase alphanumeric characters, ‘-’, or ‘.’, start with an alphanumeric character, and end with an alphanumeric character. my-pubsub
location y The location of your resource. See common values for more information. global
properties y Properties of the resource. See below

Properties

Key Required Description Example
application n The ID of the application resource this resource belongs to. app.id
environment y The ID of the environment resource this resource belongs to. env.id
resourceProvisioning n Specifies how the underlying service/resource is provisioned and managed. Options are to provision automatically via ‘recipe’ or provision manually via ‘manual’. Selection determines which set of fields to additionally require. Defaults to ‘recipe’. manual
recipe n Configuration for the Recipe which will deploy the backing infrastructure. See below
resources n An array of resources which underlay this resource. For example, an Azure Service Bus namespace ID if the Dapr Pub/Sub resource is leveraging Service Bus. See below
type n The Dapr component type. Set only when resourceProvisioning is ‘manual’. pubsub.kafka
metadata n Metadata object for the Dapr component. Schema must match Dapr component. Set only when resourceProvisioning is ‘manual’. { brokers: { value: kafkaRoute.properties.url } }
version n The version of the Dapr component. See Dapr components for available versions. Set only when resourceProvisioning is ‘manual’. v1
componentName n (read-only) The name of the Dapr component that is generated and applied to the underlying system. Used by the Dapr SDKs or APIs to access the Dapr component. mypubsub

Recipe

Property Required Description Example(s)
name n Specifies the name of the Recipe that should be deployed. If not set, the name defaults to default. name: 'azure-prod'
parameters n An object that contains a list of parameters to set on the Recipe. { size: 'large' }

Resources

Property Required Description Example(s)
id n Resource ID of the supporting resource. account.id

Resource provisioning

Provision with a Recipe

Recipes automate infrastructure provisioning using approved templates.

You can specify a Recipe name that is registered in the environment or omit the name and use the “default” Recipe.

Parameters can also optionally be specified for the Recipe.

Provision manually

If you want to manually manage your infrastructure provisioning outside of Recipes, you can set resourceProvisioning to 'manual' and specify type, metadata, and version for the Dapr component. These values must match the schema of the intended Dapr component.

Environment variables for connections

Other Radius resources, such as containers, may connect to a Dapr pub/sub resource via connections. When a connection to Dapr pub/sub named, for example, myconnection is declared, Radius injects values into environment variables that are then used to access the connected Dapr pub/sub resource:

Environment variable Example(s)
CONNECTION_MYCONNECTION_COMPONENTNAME mypubsub