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---
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---
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title: "Petclinic Demo Jonathan Scaf 2"
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title: "Petclinic Demo Jonathan Scaf 2"
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generated_by: documentor-agent
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generated_by: documentor-agent
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generated_at: "2026-05-05T10:49:39+00:00"
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generated_at: "2026-05-05T11:02:41+00:00"
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human_edited: false
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human_edited: false
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source_entity: "Component/default/petclinic-demo-jonathan-scaf-2"
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source_entity: "Component/default/petclinic-demo-jonathan-scaf-2"
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source_repo: "https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2"
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source_repo: "https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2"
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@@ -9,72 +9,61 @@ source_repo: "https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2
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# Petclinic Demo Jonathan Scaf 2
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# Petclinic Demo Jonathan Scaf 2
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> A deployment of the Spring PetClinic application, scaffolded via Backstage and integrated with OpenTelemetry, ArgoCD, and Chaos Mesh.
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> A Spring Boot–based veterinary clinic application deployed via ArgoCD into the demo-apps namespace.
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## Overview
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## Overview
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Petclinic Demo Jonathan Scaf 2 is a deployment of the Spring PetClinic application, a sample Spring Boot project designed to showcase best practices in Java application development. This deployment integrates modern DevOps tools and practices, including ArgoCD for continuous delivery, OpenTelemetry for observability, and Chaos Mesh for chaos engineering experiments.
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Petclinic Demo Jonathan Scaf 2 is a deployment of the Spring PetClinic application, a sample project showcasing Spring Boot capabilities. This service provides a web-based interface for managing veterinary clinic operations, including scheduling appointments, managing pet records, and tracking visits. It is designed to demonstrate modern application deployment practices, including GitOps workflows, OpenTelemetry instrumentation, and integration with Kubernetes.
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The application provides a web interface for managing veterinary clinics, including features for scheduling appointments, managing pet records, and tracking veterinary staff. It is deployed in the `demo-apps` namespace and continuously synced from the `main` branch of its source repository. Observability is enabled via OpenTelemetry, with metrics and traces visualized in Grafana.
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The application is scaffolded using the Backstage Application Migration Factory template, which overlays CI/CD workflows and observability configurations. It is continuously deployed via ArgoCD, ensuring that changes pushed to the repository are automatically synced to the Kubernetes cluster.
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## Repository
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## Repository
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| Field | Value |
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| Field | Value |
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| Source Repo | [https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2](https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2) |
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| Source Repo | [Petclinic Demo Jonathan Scaf 2](https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2) |
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| Branch | main |
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| Branch | main |
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| ArgoCD App | petclinic-demo-jonathan-scaf-2 |
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| ArgoCD App | petclinic-demo-jonathan-scaf-2 |
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| Namespace | demo-apps |
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| Namespace | demo-apps |
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## Architecture
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## Architecture
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- The application is based on the Spring PetClinic project, cloned from [https://github.com/spring-projects/spring-petclinic](https://github.com/spring-projects/spring-petclinic).
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- The application is based on the Spring PetClinic project, cloned from `https://github.com/spring-projects/spring-petclinic`.
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- OpenTelemetry auto-instrumentation is applied via Kustomize overlays, enabling detailed observability.
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- OpenTelemetry auto-instrumentation is applied via Kustomize overlays, enabling detailed observability for traces, metrics, and logs.
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- ArgoCD manages the deployment, continuously syncing changes from the `main` branch to the `demo-apps` namespace.
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- ArgoCD manages the deployment, continuously syncing changes from the `main` branch to the `demo-apps` namespace.
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- Chaos Mesh is enabled for chaos engineering experiments, allowing resilience testing of the application.
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- The deployment flow includes CI workflows, Kubernetes manifests, and observability configurations integrated into the repository.
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Deployment flow:
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1. Source code is cloned and scaffolded using Backstage templates.
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2. OpenTelemetry instrumentation is injected.
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3. ArgoCD syncs the application from the repository to the Kubernetes cluster.
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## Configuration
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## Configuration
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| Configuration | Description |
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| Configuration | Description |
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| Environment Variables | `spring.profiles.active` for database configuration (`mysql`, `postgres`, or `default` for H2). |
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| `spring.profiles.active` | Specifies the active Spring profile (`mysql`, `postgres`, or default `h2`). |
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| Database | Default is H2; supports MySQL and PostgreSQL with Docker or Docker Compose. |
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| Database URLs | `jdbc:h2:mem:<uuid>` for H2, or Docker-based MySQL/PostgreSQL configurations. |
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| Observability | OpenTelemetry endpoint: `http://otel-collector.monitoring.svc.cluster.local:4318`. |
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| OpenTelemetry Endpoint | `http://otel-collector.monitoring.svc.cluster.local:4318` |
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## Operations
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## Operations
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### Deployment Workflow
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- **Development Workflow**:
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1. Clone the repository:
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```bash
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```bash
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git clone https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2.git
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git clone https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2.git
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cd petclinic-demo-jonathan-scaf-2
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cd petclinic-demo-jonathan-scaf-2
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# make changes, then:
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```
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git add . && git commit -m "your change" && git push origin main
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2. Make changes and push:
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```
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```bash
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ArgoCD automatically syncs changes to the `demo-apps` namespace.
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git add . && git commit -m "your change" && git push origin main
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```
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3. ArgoCD automatically syncs changes to the `demo-apps` namespace.
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### Rollback
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- **Rollback**:
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1. Open the [ArgoCD UI](https://argocd.kyndemo.live/applications/petclinic-demo-jonathan-scaf-2).
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1. Open the [ArgoCD UI](https://argocd.kyndemo.live/applications/petclinic-demo-jonathan-scaf-2).
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2. Click **History and Rollback**.
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2. Click **History and Rollback**.
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3. Select the desired revision and click **Rollback**.
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3. Select the desired revision and click **Rollback**.
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Alternatively, revert the commit in Git and push — ArgoCD will auto-sync the rollback.
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Alternatively, revert the commit in Git and push — ArgoCD will auto-sync the rollback.
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<!-- TODO: FILL IN -->
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<!-- TODO: FILL IN -->
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## Observability
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## Observability
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- **Grafana Dashboard**: [https://grafana.kyndemo.live/d/otel-app-observability-v2/opentelemetry-application-observability?orgId=1&var-app=petclinic-demo-jonathan-scaf-2](https://grafana.kyndemo.live/d/otel-app-observability-v2/opentelemetry-application-observability?orgId=1&var-app=petclinic-demo-jonathan-scaf-2)
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- **Grafana Dashboard**: [OpenTelemetry Application Observability](https://grafana.kyndemo.live/d/otel-app-observability-v2/opentelemetry-application-observability?orgId=1&var-app=petclinic-demo-jonathan-scaf-2)
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- OpenTelemetry instrumentation is enabled, exporting traces, metrics, and logs to the OTel Collector.
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- **Alerting**: Configured via Grafana with label selector `app.kubernetes.io/instance=petclinic-demo-jonathan-scaf-2`.
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_Not configured — see platform observability docs._
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## Dependencies
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## Dependencies
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@@ -1,21 +1,21 @@
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---
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---
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title: "Petclinic Service"
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title: "Petclinic"
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generated_by: documentor-agent
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generated_by: documentor-agent
|
||||||
generated_at: "2026-05-05T10:41:37+00:00"
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generated_at: "2026-05-05T11:02:41+00:00"
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human_edited: false
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human_edited: false
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source_entity: "Component/default/petclinic"
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source_entity: "Component/default/petclinic"
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source_repo: "https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2"
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source_repo: "https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2"
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---
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---
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# Petclinic Service
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# Petclinic
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> A Spring Boot–based application for managing veterinary clinic operations, including scheduling, customer management, and pet records.
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> A Spring Boot–based application for managing veterinary clinic operations, including scheduling, customer management, and pet records.
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## Overview
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## Overview
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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. Originally developed as a sample application by the Spring community, this service has been adapted and deployed as part of the `petclinic-demo-jonathan-scaf-2` system.
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The Petclinic service is a Java-based application built using Spring Boot. It provides a comprehensive platform for managing veterinary clinic operations, including scheduling appointments, managing customer and pet records, and handling clinic workflows. Originally sourced from the Spring Petclinic project, this service has been adapted and deployed using Backstage templates to integrate with modern observability and deployment tools.
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The application supports multiple database configurations, including in-memory H2, MySQL, and PostgreSQL, and is designed to be easily deployable in containerized environments. It includes OpenTelemetry instrumentation for observability and integrates with ArgoCD for continuous deployment. The service plays a critical role in the broader veterinary platform, serving as the primary interface for clinic management.
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The application supports multiple database configurations, including in-memory H2, MySQL, and PostgreSQL, and is designed to be easily deployable in containerized environments. It includes OpenTelemetry instrumentation for enhanced observability and integrates with Grafana for monitoring and alerting. The service is part of the broader `petclinic-demo-jonathan-scaf-2` system and is managed via ArgoCD for continuous deployment.
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## Repository
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## Repository
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@@ -28,45 +28,42 @@ The application supports multiple database configurations, including in-memory H
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## Architecture
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## Architecture
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- The Petclinic service is scaffolded using the Application Migration Factory Backstage template.
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- The Petclinic service is scaffolded using the Backstage Application Migration Factory template.
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- Deployment flow:
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- Deployment flow:
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1. Source code cloned from the original Spring Petclinic repository.
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1. Source code cloned from the original Spring Petclinic repository.
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2. Backstage overlays applied for catalog entity creation and CI workflows.
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2. Backstage overlays applied for CI workflows and catalog entity creation.
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3. OpenTelemetry auto-instrumentation injected via Kustomize overlays.
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3. OpenTelemetry auto-instrumentation injected via Kustomize overlays.
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4. ArgoCD Application created targeting the `demo-apps` namespace.
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4. ArgoCD application created targeting the `demo-apps` namespace.
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5. Continuous sync from the `main` branch via ArgoCD.
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5. Continuous sync from the `main` branch ensures up-to-date deployments.
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- Observability is enabled through OpenTelemetry, with metrics and traces visualized in Grafana.
|
- Observability is enabled with OpenTelemetry, exporting traces, metrics, and logs to the OTel Collector, visualized in Grafana.
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## Configuration
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## Configuration
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| Configuration | Description |
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| Configuration | Description |
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|---|---|
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|---|---|
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| `spring.profiles.active` | Sets the active Spring profile (`mysql`, `postgres`, or default `h2`). |
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| `spring.profiles.active` | Specifies the active Spring profile (`mysql`, `postgres`, or default H2). |
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| Database URL | For H2: `jdbc:h2:mem:<uuid>` (printed at startup). |
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| Database URLs | JDBC URLs for H2, MySQL, and PostgreSQL databases. |
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| MySQL Docker | `docker run -e MYSQL_USER=petclinic -e MYSQL_PASSWORD=petclinic -e MYSQL_ROOT_PASSWORD=root -e MYSQL_DATABASE=petclinic -p 3306:3306 mysql:9.6` |
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| Docker Compose | Predefined services for MySQL and PostgreSQL databases. |
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| PostgreSQL Docker | `docker run -e POSTGRES_USER=petclinic -e POSTGRES_PASSWORD=petclinic -e POSTGRES_DB=petclinic -p 5432:5432 postgres:18.3` |
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| OTel Collector Endpoint | `http://otel-collector.monitoring.svc.cluster.local:4318` |
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## Operations
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## Operations
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- **Local Development**:
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- **Local Development**:
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1. Clone the repository: `git clone https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2.git`.
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1. Clone the repository: `git clone https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2.git`
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2. Start the application using Maven: `./mvnw spring-boot:run` or Gradle: `./gradlew bootRun`.
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2. Start the application using Maven or Gradle: `./mvnw spring-boot:run` or `./gradlew bootRun`.
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3. Access the application at `http://localhost:8080`.
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3. Access the application at `http://localhost:8080`.
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- **Container Build**:
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- **Deployment**:
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Use the Spring Boot build plugin: `./mvnw spring-boot:build-image`.
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- ArgoCD monitors the repository and automatically syncs changes to the `demo-apps` namespace.
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- Rollback can be performed via the ArgoCD UI or by reverting commits in Git.
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- **Rollback**:
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1. Open the [ArgoCD UI](https://argocd.kyndemo.live/applications/petclinic-demo-jonathan-scaf-2).
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2. Use the "History and Rollback" feature to revert to a previous version.
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<!-- TODO: FILL IN -->
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<!-- TODO: FILL IN -->
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## Observability
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## Observability
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- **Grafana Dashboard**: [OpenTelemetry Application Observability](https://grafana.kyndemo.live/d/otel-app-observability-v2/opentelemetry-application-observability?orgId=1&var-service=petclinic).
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- **Grafana Dashboard**: [OpenTelemetry Application Observability](https://grafana.kyndemo.live/d/otel-app-observability-v2/opentelemetry-application-observability?orgId=1&var-service=petclinic)
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- **OTel Collector Endpoint**: `http://otel-collector.monitoring.svc.cluster.local:4318`.
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- **Alerts**: Configured via Grafana with label selector `app=petclinic`.
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- **Alerts**: Configured via Grafana with label selector `app=petclinic`.
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- **Instrumentation**: OpenTelemetry auto-instrumentation enabled.
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## Dependencies
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## Dependencies
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Reference in New Issue
Block a user