CTS Proxy

Angular frontend and Spring Boot backend proxy for the Chemical Translation Service (CTS). Allows users to convert chemical identifiers (InChIKey, SMILES, CAS, etc.) between formats via single or batch conversion.

Prerequisites

• Java 17+
• Maven 3.6+
• Node.js 18+ and npm 10+

Project Structure

ctsproxy/
├── casetojson/          # CAS-to-JSON utility library
├── ctsclient/           # CTS REST client library
├── web/
│   ├── src/main/scala/  # Spring Boot backend (Scala)
│   ├── src/main/resources/application.yml
│   └── frontend/        # Angular 21 frontend
└── pom.xml              # Parent Maven POM

Development Setup

1. Build dependencies

From the project root, install the shared libraries:

mvn clean install -pl casetojson,ctsclient

2. Start the backend

mvn spring-boot:run -pl web

This starts the Spring Boot server on http://localhost:8080. It proxies requests to the upstream CTS service configured in web/src/main/resources/application.yml.

3. Start the frontend

cd web/frontend
npm install
npm start

This runs ng serve on http://localhost:4200 with a dev proxy that forwards /rest and /service requests to http://localhost:8080 (configured in web/frontend/proxy.conf.json).

Running tests

# Frontend tests
cd web/frontend
npm test

# Backend tests
mvn test

Production Build

mvn clean install

This builds the full application including the Angular frontend, which gets packaged into the Spring Boot JAR.

Swarm Deployment

1. Push image to repo
2. SSH to swarm manager node
3. Pull image from repo
4. Update the service:

docker service update --force cts_ctsproxy

Contact

• Diego - backend and frontend