Cloud Code Academy - Integration Developer Program

Lesson 1: HTTP Integration Basics with JSONPlaceholder

Welcome to the first lesson of the Integration Developer program! In this lesson, you'll learn the fundamentals of making HTTP callouts in Salesforce using a free, public API called JSONPlaceholder.

🎯 Learning Objectives

By the end of this lesson, you will be able to:

• Understand and implement all major HTTP methods (GET, POST, PUT, PATCH, DELETE)
• Make HTTP callouts from Salesforce Apex
• Work with JSON request and response bodies
• Write proper test classes for HTTP callouts
• Use mock responses in your tests

📋 Exercise Overview

This exercise contains three main components:

1. JSONPlaceholderExercise.cls

   • Contains skeleton methods for each HTTP operation
   • Includes detailed TODO comments to guide your implementation
   • Located in force-app/main/default/classes/

2. JSONPlaceholderMock.cls

   • Provides mock responses for testing
   • Demonstrates proper test data structure
   • Located in force-app/main/default/classes/

3. JSONPlaceholderExerciseTest.cls

   • Contains test methods to validate your implementation
   • Shows proper test method structure
   • Located in force-app/main/default/classes/

🔨 Installation

1. Clone this repository to your local machine
2. Deploy the code to your Salesforce org using:

   sfdx force:source:deploy -p force-app/main/default

✍️ Exercise Instructions

1. Open JSONPlaceholderExercise.cls
2. Implement each method following the TODO comments
3. Use the JSONPlaceholder API (https://jsonplaceholder.typicode.com/)
4. Run the test class to verify your implementation

🎯 Success Criteria

Your implementation should:

• Pass all test methods in JSONPlaceholderExerciseTest
• Handle JSON properly
• Include proper error handling
• Follow Salesforce best practices

💡 Tips

• Test your implementation against the actual JSONPlaceholder API first
• Use the Developer Console debug logs to troubleshoot
• Reference the solution in solutions/classes/ if you get stuck
• Pay attention to the HTTP response status codes

📚 Resources

• JSONPlaceholder Guide
• Apex HTTP Methods
• Apex Testing Best Practices

🏆 Challenge

Once you've completed the basic implementation, try these challenges:

1. Add error handling for non-200 status codes
2. Implement request timeouts
3. Add bulk operations for multiple posts
4. Create custom exception classes

❓ Support

If you need help:

• Review the solution code in the solutions directory
• Check the test class for expected behavior
• Reach out to your instructor

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Happy coding! 🚀

This is part of the Cloud Code Academy Integration Developer certification program.