Introduction

A very demostration on how to use Azure Service Bus to call an internal REST API from an Azure Function

Setup

• Run ./infra/create_infrastructure.sh -g {Resource Group} -l {location} -s {Subscription Name}.
  • This will create:
    • Azure Service Bus with two Queues - ping and pong
    • Azure Cosmos DB with a Database named Requests and a Collection named Items
    • Azure Function
• Manually create the following in Azure:
  • A virtual network with subnets:
    • Kubernetes
    • Servers
  • An AKS cluster deployed to the Kubernetes subnet
  • A dedicated Azure Storage for
  • A ubuntu VM deployed to the Servers subnet
    • If an NSG is created for the VM, please open port 8081

Application Deployment

API

• cd api
• go build main.go -o api
• scp api manager@{ubuntu-vm-public-ip}:/opt/api
• ssh manager@{ubuntu-vm-public-ip}
• ./api

Producer

• cd servicebus-producer
• func azure functionapp publish {function-app-name}

Consumer

• Copy the access keys/connection strings for Service Bus
• cd servicebus-consumer
• Update local.settings.json
  • SERVICEBUS_CONSTR
  • AzureWebJobsStorage
    • Should create an Azure Storage Account dedicated just for this Function even though it executes inside AKS
  • API_ENDPOINT
    • Should be in the form of 'http://:8081
• func kubernetes install --namespace keda
• func kubernetes deploy --name internal-consumer --min-replicas 1 --namespace servicebusdemo

Test

To Do List

Issues