platform-docs/catalog/component/default/petclinic/README.md

title, generated_by, generated_at, human_edited, source_entity, source_repo

title	generated_by	generated_at	human_edited	source_entity	source_repo
Petclinic	documentor-agent	2026-05-05T10:06:42+00:00	false	Component/default/petclinic	https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2

Petclinic

A Spring Boot–based application for managing veterinary clinic operations, including scheduling, customer management, and pet records.

Overview

The Petclinic service is a Java-based application built using Spring Boot. It provides a comprehensive solution for managing veterinary clinic operations, including scheduling appointments, managing customer and pet records, and handling clinic workflows. The application is designed to be lightweight and easily deployable, with support for in-memory databases (H2) and external databases like MySQL and PostgreSQL.

This service is part of the broader petclinic-demo-jonathan-scaf-2 system and has been scaffolded using the Backstage Application Migration Factory template. It includes OpenTelemetry instrumentation for observability and integrates with ArgoCD for continuous deployment. The application is suitable for development and experimental environments, with a focus on showcasing Spring Boot capabilities and providing a foundation for further customization.

Repository

Field	Value
Source Repo	Petclinic Repository
Branch	main
ArgoCD App	petclinic-demo-jonathan-scaf-2
Namespace	demo-apps

Architecture

• The Petclinic service is deployed using ArgoCD, targeting the demo-apps namespace.
• OpenTelemetry auto-instrumentation is applied via Kustomize overlays, enabling detailed observability for traces, metrics, and logs.
• The application uses Spring Boot for rapid development and deployment, with support for both in-memory and external databases.
• Continuous integration and deployment workflows are managed through Backstage and ArgoCD, ensuring seamless updates and rollbacks.

Configuration

Configuration	Description
spring.profiles.active	Specifies the active Spring profile (mysql, postgres, or default h2).
Database URLs	jdbc:h2:mem:<uuid> for H2, or external database URLs for MySQL/PostgreSQL.
Environment Variables	Used for database credentials when running MySQL/PostgreSQL containers.

Operations

Local Development

1. Clone the repository:

   git clone https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2.git
   cd petclinic-demo-jonathan-scaf-2
   

2. Run the application:
   • Using Maven:

     ./mvnw spring-boot:run
     

   • Using Gradle:

     ./gradlew bootRun
     

3. Access the application at http://localhost:8080.

Deployment

ArgoCD monitors the repository and automatically syncs changes to the demo-apps namespace. To roll back to a previous version:

1. Open the ArgoCD UI.
2. Click History and Rollback.
3. Select the desired revision and click Rollback.

Alternatively, revert the commit in Git and push — ArgoCD will auto-sync the rollback.

Observability

• Grafana Dashboard: OpenTelemetry Application Observability
• OTel Collector Endpoint: http://otel-collector.monitoring.svc.cluster.local:4318

This service is fully instrumented with OpenTelemetry, providing detailed insights into application performance and health. Alerts and metrics can be monitored via Grafana.

Dependencies

• component:default/argocd-service
• resource:default/k6-operator
• resource:default/otel-collector
• resource:default/veterinary-platform