Implementing API Versioning and Revision Control in Azure API Management

Introduction

In this guide, we will implement API versioning and revision control in Azure API Management using Pulumi. Azure API Management is a service that helps organizations publish APIs to external, partner, and internal developers to unlock the potential of their data and services. API versioning allows you to manage different versions of your API, while revision control helps you manage changes to your API without affecting the existing versions.

Step-by-Step Explanation

Step 1: Set up your Pulumi project

1. Ensure you have Pulumi installed and configured. If not, follow the installation guide.
2. Create a new Pulumi project using TypeScript by running pulumi new typescript.
3. Install the Azure Native provider by running npm install @pulumi/azure-native.

Step 2: Create an Azure API Management instance

1. Define the necessary configuration for your Azure API Management instance, such as resource group, location, and instance name.
2. Use the ApiManagementService resource from the @pulumi/azure-native package to create the API Management instance.

Step 3: Define your API and its versions

1. Create an API definition using the Api resource from the @pulumi/azure-native package.
2. Define multiple versions of your API using the ApiVersionSet resource.
3. Associate each version of the API with the ApiVersionSet.

Step 4: Implement revision control

1. Create revisions for your API using the Api resource with different revision identifiers.
2. Manage changes to your API by creating new revisions and updating the existing ones.

Step 5: Deploy your changes

1. Run pulumi up to deploy your API Management instance, API versions, and revisions to Azure.
2. Verify the deployment in the Azure portal.

Summary

In this guide, we have implemented API versioning and revision control in Azure API Management using Pulumi. By following these steps, you can manage different versions of your API and control changes without affecting existing versions. This ensures a smooth and consistent experience for your API consumers.

Full Code Example

import * as pulumi from "@pulumi/pulumi";
import * as azure from "@pulumi/azure-native";

// Create an Azure Resource Group
const resourceGroup = new azure.resources.ResourceGroup("resourceGroup", {
    location: "West US",
});

// Create an API Management Service
const apiManagementService = new azure.apimanagement.ApiManagementService("apiManagementService", {
    resourceGroupName: resourceGroup.name,
    location: resourceGroup.location,
    publisherEmail: "admin@contoso.com",
    publisherName: "Contoso",
    sku: {
        name: "Developer",
        capacity: 1,
    },
});

// Create an API Version Set
const apiVersionSet = new azure.apimanagement.ApiVersionSet("apiVersionSet", {
    resourceGroupName: resourceGroup.name,
    serviceName: apiManagementService.name,
    displayName: "My API Version Set",
    versioningScheme: "Segment",
});

// Create the first version of the API
const apiV1 = new azure.apimanagement.Api("apiV1", {
    resourceGroupName: resourceGroup.name,
    serviceName: apiManagementService.name,
    path: "myapi/v1",
    protocols: ["https"],
    apiVersionSetId: apiVersionSet.id,
    apiVersion: "v1",
    displayName: "My API v1",
    serviceUrl: "https://myapi.com/v1",
});

// Create the second version of the API
const apiV2 = new azure.apimanagement.Api("apiV2", {
    resourceGroupName: resourceGroup.name,
    serviceName: apiManagementService.name,
    path: "myapi/v2",
    protocols: ["https"],
    apiVersionSetId: apiVersionSet.id,
    apiVersion: "v2",
    displayName: "My API v2",
    serviceUrl: "https://myapi.com/v2",
});

// Create a revision for the first version of the API
const apiV1Rev1 = new azure.apimanagement.Api("apiV1Rev1", {
    resourceGroupName: resourceGroup.name,
    serviceName: apiManagementService.name,
    path: "myapi/v1",
    protocols: ["https"],
    apiVersionSetId: apiVersionSet.id,
    apiVersion: "v1",
    displayName: "My API v1 - Revision 1",
    serviceUrl: "https://myapi.com/v1",
    isCurrent: true,
});

// Create a revision for the second version of the API
const apiV2Rev1 = new azure.apimanagement.Api("apiV2Rev1", {
    resourceGroupName: resourceGroup.name,
    serviceName: apiManagementService.name,
    path: "myapi/v2",
    protocols: ["https"],
    apiVersionSetId: apiVersionSet.id,
    apiVersion: "v2",
    displayName: "My API v2 - Revision 1",
    serviceUrl: "https://myapi.com/v2",
    isCurrent: true,
});

export const apiManagementServiceUrl = apiManagementService.gatewayUrl;