8000 Add Azure Event Grid integration with CloudEvents support by belljun3395 · Pull Request #1299 · spring-cloud/spring-cloud-function · GitHub 8000
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Add Azure Event Grid integration with CloudEvents support#1299

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belljun3395:chore/westus-eventgrid
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Add Azure Event Grid integration with CloudEvents support#1299
belljun3395 wants to merge 1 commit intospring-cloud:mainfrom
belljun3395:chore/westus-eventgrid

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@belljun3395 belljun3395 commented Aug 18, 2025 •
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Azure Event Grid Trigger Sample

Overview

This PR adds a comprehensive Azure Event Grid trigger sample that demonstrates integration with Spring Cloud Function using CloudEvents v1.0 specification. The sample showcases event processing patterns for modern cloud-native applications.

This contribution is also related to #1279

What's Included

Core Implementation

  • EventGridDemoApplication: Main Spring Boot application with two Spring Cloud Functions
    • processEvent: Processes incoming CloudEvents with detailed logging
    • createEvent: Creates CloudEvents from payload maps
  • EventGridHandler: Azure Function HTTP trigger handler that supports:
    • CloudEvents v1.0 format (structured and binary mode)
    • Event Grid native format with automatic conversion
    • Webhook validation according to CloudEvents specification

Key Features

  • Multi-format Support: Handles both CloudEvents and Event Grid formats seamlessly
  • Webhook Validation: Implements proper Azure Event Grid subscription validation
  • Binary Mode Support: Processes CloudEvents in both structured (JSON) and binary (HTTP headers) modes
  • Automatic Conversion: Converts Event Grid format events to CloudEvents for consistent processing
  • Comprehensive Testing: Unit tests covering validation, format detection, and event processing paths

Configuration & Deployment

  • Maven configuration for Azure Functions deployment
  • Local development setup with Azure Functions Core Tools
  • Complete Azure resource setup scripts
  • Detailed README with usage examples

Technical Implementation Details

The sample demonstrates several important patterns:

  1. Event Format Detection: Automatically detects and handles different event formats based on content-type and headers
  2. CloudEvents Standards Compliance: Full support for CloudEvents v1.0 specification
  3. Spring Cloud Function Integration: Uses function catalog for loose coupling between Azure Functions and business logic
  4. Error Handling: Graceful error handling with appropriate HTTP status codes

Benefits

  • Standardization: Uses CloudEvents specification for interoperability
  • Flexibility: Supports multiple event formats and delivery modes
  • Production Ready: Includes proper error handling, logging, and testing
  • Educational Value: Demonstrates best practices for Azure Event Grid integration

This sample provides a solid foundation for developers building event-driven applications with Azure Event Grid and Spring Cloud Function.

@belljun3395 belljun3395 force-pushed the chore/westus-eventgrid branch from 4f3408b to c44c287 Compare August 18, 2025 10:37
@belljun3395 belljun3395 force-pushed the chore/westus-eventgrid branch 2 times, most recently from 1ea9421 to 93570f3 Compare September 22, 2025 06:36
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belljun3395 commented Sep 22, 2025

@OlgaMaciaszek i resolve conflicts!

@belljun3395
Add Azure Event Grid integration with CloudEvents support
de20ff6 
Signed-off-by: belljun3395 <195850@jnu.ac.kr>
@belljun3395 belljun3395 force-pushed the chore/westus-eventgrid branch from 93570f3 to de20ff6 Compare September 22, 2025 07:23
@olegz olegz closed this in af26eae Sep 22, 2025
@olegz olegz added this to the 5.0 milestone Sep 22, 2025
@olegz olegz self-requested a review September 22, 2025 09:49
olegz pushed a commit that referenced this pull request Sep 22, 2025
@belljun3395 @olegz
Add Azure Event Grid integration with CloudEvents support
c230b2e 
Signed-off-by: belljun3395 <195850@jnu.ac.kr>

Resolves #1299
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