Conversation App

A small Spring Boot modular web application built with Spring Modulith. The project implements a conversation-management service with account handling and integration with Google Generative Language APIs. It includes server-side rendered UI (Thymeleaf), an OpenAPI client generation step, observability, and production-ready configuration (Liquibase, RabbitMQ, PostgreSQL).

Key Features

• Modules: Modular design using Spring Modulith with clearly separated modules: accounts, conversation, and google_api.
• Web UI: Server-side UI using Thymeleaf templates located under src/main/resources/templates.
• API integration: OpenAPI specification included (src/main/resources/openapi/generativelanguage_googleapis_com.json) and client code generated at build time.
• Persistence: PostgreSQL support via HikariCP and Liquibase-based migrations (src/main/resources/database/changelog).
• Messaging & Events: Spring Modulith events and RabbitMQ configuration included for async communication patterns.
• Observability: OpenTelemetry and Micrometer instrumentation pre-configured; management endpoints and metrics are exposed.
• Testing: Test support with JUnit, Testcontainers, and WireMock for integrations.

Modules

• accounts: Account management, authentication and authority entities.
• conversation: Conversation domain aggregates (Conversation, Request, Response, Section), command and query facades, and repository layers.
• google_api: Adapter and internal API call service for Google Generative Language integration.

Tech Stack

• Java 21
• Spring Boot + Spring Modulith
• Spring Data JPA, Hibernate
• PostgreSQL + HikariCP
• Liquibase for DB migrations
• RabbitMQ for messaging
• OpenTelemetry (OTel) + Micrometer
• Thymeleaf for server-side rendering
• OpenAPI generator for client code
• Sass (via Gradle plugin) for CSS preprocessing