Azure Functions Service Bus Extensions with Message Settlement

[swapnil-nagar]

Overview

This PR introduces a comprehensive Azure Functions Node.js extension for Service Bus integration, providing native TypeScript support and enterprise-grade message processing capabilities. This extension enables seamless integration between Azure Functions and Azure Service Bus with optimal performance, robust error handling, and production-ready features.

Key Features

• Native Service Bus Integration: Direct integration with Azure Service Bus queues and topics
• TypeScript Support: Full TypeScript definitions with type safety
• Message Settlement: Comprehensive message completion, abandonment, and dead letter handling
• Lock Token Management: Proper lock token extraction and validation
• gRPC Communication: High-performance gRPC communication with the Azure Functions host
• Batch Processing: Support for single and batch message processing

Service Bus Message Factory

• AzureServiceBusMessageFactory: Factory for creating Service Bus message instances
• Proper message decoding from AMQP format
• Lock token extraction and validation
• Safe message settlement operations

gRPC Client Infrastructure

• GrpcClientFactory: Configurable gRPC client creation
• GrpcUriBuilder: URI building from command-line arguments
• Message length configuration support
• Connection pooling and optimization

[Copilot]

Pull Request Overview

This PR introduces a Node.js Azure Functions extension for Service Bus, adding TypeScript support, native message decoding and settlement via gRPC, and enterprise-grade tooling.

• Configure build setup with Webpack, TypeScript, ESLint, and proto copy
• Add utilities for lock‐token conversion, message decoding, and gRPC URI parsing with full tests
• Implement Service Bus message factory and gRPC settlement actions for completion, abandonment, dead-lettering, deferral, and lock management

Reviewed Changes

Copilot reviewed 30 out of 34 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
webpack.config.js	Adds TS/ESLint build config, externals, and proto copy
src/util/lockTokenUtil.ts	Implements lock token conversion and extraction
src/util/grpcUriBuilder.ts	Parses CLI args for host, port, and max message length
src/servicebus/azureServiceBusMessageFactory.ts	Builds message manager integrating decoder and gRPC client
src/servicebus/ServiceBusMessageActions.ts	Implements settlement actions via gRPC
README.md	Documentation for Blob extension (needs update)
package.json	Project metadata (description/version need correction)

Comments suppressed due to low confidence (3)

azure-functions-nodejs-extensions-servicebus/src/util/grpcUriBuilder.ts:8

• [nitpick] Update the JSDoc to also mention the required 'functions-grpc-max-message-length' argument.

 *  It expects two arguments: 'host' and 'port'.

azure-functions-nodejs-extensions-servicebus/README.md:1

• The README still describes the Blob extension. Update it to document the Service Bus extension instead.

## Azure Functions Node.js Extensions - Blob

azure-functions-nodejs-extensions-servicebus/package.json:5

• Update the package description to reflect the Service Bus extension rather than the storage blob client.

    "description": "Node.js Azure Storage Client extension implementations for Azure Functions",