Step by Step Guide to Building an Adobe Experience Manager API Integration in Go

Introduction

Hey there, fellow developer! Ready to dive into the world of Adobe Experience Manager (AEM) API integration using Go? You're in for a treat. AEM's powerful API opens up a world of possibilities, and Go's simplicity and efficiency make it a perfect match. Let's get cracking!

Prerequisites

Before we jump in, make sure you've got:

• Go installed on your machine
• Access to an AEM instance
• API credentials (you know the drill)

Got all that? Great! Let's move on.

Setting up the Go project

First things first, let's set up our Go project:

mkdir aem-api-integration
cd aem-api-integration
go mod init github.com/yourusername/aem-api-integration

Now, let's grab the dependencies we'll need:

go get github.com/go-resty/resty/v2

Authentication

AEM uses OAuth 2.0 for authentication. Here's a quick snippet to get you started:

import (
    "github.com/go-resty/resty/v2"
)

func getAccessToken(clientID, clientSecret string) (string, error) {
    client := resty.New()
    resp, err := client.R().
        SetFormData(map[string]string{
            "grant_type":    "client_credentials",
            "client_id":     clientID,
            "client_secret": clientSecret,
        }).
        Post("https://your-aem-instance.com/oauth/token")
    
    // Parse the response and return the access token
    // Error handling omitted for brevity
}

Making API requests

Now that we're authenticated, let's make some requests:

func getPage(accessToken, path string) (*resty.Response, error) {
    client := resty.New()
    return client.R().
        SetAuthToken(accessToken).
        Get("https://your-aem-instance.com/content/path/to/page.json")
}

func createPage(accessToken, parentPath, pageName string) (*resty.Response, error) {
    client := resty.New()
    return client.R().
        SetAuthToken(accessToken).
        SetFormData(map[string]string{
            "cmd":      "createPage",
            "parentPath": parentPath,
            "title":    pageName,
        }).
        Post("https://your-aem-instance.com/content.json")
}

Error handling and logging

Don't forget to implement robust error handling and logging. It'll save you hours of headaches later:

import (
    "log"
)

// Use this throughout your code
if err != nil {
    log.Printf("Error occurred: %v", err)
    return nil, err
}

Parsing JSON responses

AEM returns JSON responses. Let's parse them:

type Page struct {
    Title string `json:"jcr:title"`
    Path  string `json:"jcr:path"`
}

func parsePage(resp *resty.Response) (*Page, error) {
    var page Page
    err := json.Unmarshal(resp.Body(), &page)
    if err != nil {
        return nil, err
    }
    return &page, nil
}

Implementing common AEM operations

Here's a quick example of creating a page:

func CreatePage(accessToken, parentPath, title string) (*Page, error) {
    resp, err := createPage(accessToken, parentPath, title)
    if err != nil {
        return nil, err
    }
    return parsePage(resp)
}

Optimizing performance

Want to speed things up? Try concurrent requests:

import (
    "sync"
)

func GetMultiplePages(accessToken string, paths []string) ([]*Page, error) {
    var wg sync.WaitGroup
    pages := make([]*Page, len(paths))
    
    for i, path := range paths {
        wg.Add(1)
        go func(i int, path string) {
            defer wg.Done()
            resp, _ := getPage(accessToken, path)
            pages[i], _ = parsePage(resp)
        }(i, path)
    }
    
    wg.Wait()
    return pages, nil
}

Testing the integration

Don't forget to test your code! Here's a simple example:

func TestGetPage(t *testing.T) {
    accessToken := "your-access-token"
    path := "/content/path/to/page"
    
    resp, err := getPage(accessToken, path)
    if err != nil {
        t.Fatalf("Failed to get page: %v", err)
    }
    
    page, err := parsePage(resp)
    if err != nil {
        t.Fatalf("Failed to parse page: %v", err)
    }
    
    if page.Title == "" {
        t.Error("Page title is empty")
    }
}

Best practices and considerations

• Implement rate limiting to avoid hitting API limits
• Use exponential backoff for retries on failures
• Always sanitize and validate input to prevent security issues

Conclusion

And there you have it! You've just built an AEM API integration in Go. Pretty cool, right? Remember, this is just the tip of the iceberg. There's so much more you can do with AEM's API. Keep exploring, keep coding, and most importantly, have fun!

Need more info? Check out the AEM API documentation and the Go documentation. Happy coding!