How chandru2002-2/corex-project works
1. Repository shape
- This is a full-stack repo with a Spring Boot backend under backend/ and a React frontend at the repo root (src/, public/, index.html).
- The system is centered on a secure API platform rather than a generic CRUD app: authentication, authorization, audit logging, and request metrics are core concerns.
2. Backend entrypoint and runtime
- CorexApplication.java is the Spring Boot bootstrap class.
- The backend runs as a standalone Java service on localhost:8080 and exposes REST endpoints consumed by the UI.
3. Layered backend architecture
- The backend follows a clean layered structure:
- controller for HTTP endpoints
- service for business logic
- repository for persistence
- entity for JPA models
- dto for request/response payloads
- security for filters and token handling
- config for security and CORS setup
- This separation is important for the diagram: controllers do not appear to own state directly; they delegate to services and repositories.
4. Authentication subsystem
- AuthController and AuthService handle registration, login, admin creation, token refresh, and logout.
- JWT handling is centralized in JwtUtil, with token validation and security-context population happening in JwtFilter.
- The system is designed to be stateless: no server session is used for authentication, and Spring Security is configured accordingly.
5. Authorization and access control
- Access is role-based, with ADMIN and USER roles represented in the model layer (Role entity).
- SecurityConfig enforces endpoint boundaries such as public auth routes and protected admin/user routes.
- RoleTestController appears to exist as a role-protected test endpoint for validating access control behavior.
6. Security filter chain
- The backend uses custom servlet filters to augment the request pipeline:
- JwtFilter authenticates incoming requests
- MetricsFilter records API usage/performance
- AuditFilter captures request audit data
- The README indicates this custom chain is ordered as JwtFilter → MetricsFilter → AuditFilter, which is a key architectural boundary: security and observability happen before controller execution.
7. Observability and auditing
- AuditController and MetricsController expose admin-facing views of the collected telemetry.
- AuditLog and Metrics entities, plus their repositories, persist request history and usage stats.
- This means every API call is not just handled functionally; it also feeds an internal monitoring/audit pipeline used by administrators.
8. Persistence model
- JPA entities include User, Session, Role, AuditLog, and Metrics.
- Repositories (UserRepository, SessionRepository, AuditLogRepository, MetricsRepository) provide database access.
- The database is intended to be MySQL, and schema scripts live under scheme/schema.sql, which suggests the repo is meant to be bootstrapped against a relational schema rather than an embedded store.
9. Frontend dashboard role
- The frontend is a React app (src/main.jsx, src/App.jsx, styles in src/App.css and src/index.css) built to act as an API dashboard rather than a traditional content site.
- It likely consumes the backend endpoints to let users test auth flows and let admins inspect audit/metrics data.
- The README’s API_TREE hint indicates the UI organizes endpoints into Auth/Admin/User groups and manages token state in browser storage.
10. End-to-end request flow
- A typical request flow is: browser UI → backend API → security filters → controller → service → repository → database → response.
- For authenticated calls, the JWT is attached in the Authorization: Bearer ... header, validated by JwtFilter, and then authorization decisions are made before business logic executes.
- Audit and metrics data are captured as side effects of the request pipeline, not as separate batch jobs.
11. Operational behavior
- The backend is configured with CORS support (CorsConfig) so the React frontend can call it from the browser during development.
- PasswordConfig implies password hashing/encoding is isolated from controller code, which is a useful architectural separation for the diagram.
12. What to emphasize in an architecture diagram
- Show two main tiers: React dashboard UI and Spring Boot API.
- Inside the backend, show the request path crossing security filters first, then controllers/services/repositories, with audit/metrics persistence as parallel side effects.
- Show the database as the shared persistence boundary for users, sessions/tokens, audit logs, and metrics.
- Highlight that admin endpoints are not just business endpoints; they are also the consumers of the observability subsystem.
Main entry points: App.jsx React dashboard · AuthService.java Auth service · SecurityConfig.java Security config · AuditLogRepository.java Audit repo
Components 22
Frontend
React dashboard UI at the repository root.
- React dashboard · Browser UI for auth flows and admin telemetry views.
src/App.jsx - App entry · Frontend bootstrap and app mounting.
src/main.jsx - Styles · Shared UI styling for the dashboard.
src/App.css
Backend
Spring Boot API and layered application code.
- Corex app · Backend application bootstrap and runtime entrypoint.
backend/src/main/java/com/corex/CorexApplication.java - CORS config · Allows the React UI to call the API from the browser.
backend/src/main/java/com/corex/config/CorsConfig.java - Password config · Centralized password hashing and encoding setup.
backend/src/main/java/com/corex/config/PasswordConfig.java - Security config · Defines public auth routes, protected routes, and role boundaries.
backend/src/main/java/com/corex/config/SecurityConfig.java - JWT filter · Validates bearer tokens and populates the security context.
backend/src/main/java/com/corex/security/JwtFilter.java - Metrics filter · Records request timing and usage signals.
backend/src/main/java/com/corex/security/MetricsFilter.java - Audit filter · Captures request audit events as part of the pipeline.
backend/src/main/java/com/corex/security/AuditFilter.java - Auth API · Login, registration, admin creation, refresh, and logout endpoints.
backend/src/main/java/com/corex/controller/AuthController.java - Audit API · Admin-facing access to collected audit records.
backend/src/main/java/com/corex/controller/AuditController.java - Metrics API · Admin-facing access to collected usage metrics.
backend/src/main/java/com/corex/controller/MetricsController.java - Role test · Protected endpoint used to validate role-based access control.
backend/src/main/java/com/corex/controller/RoleTestController.java - Auth service · Coordinates authentication, user setup, and token lifecycle.
backend/src/main/java/com/corex/service/AuthService.java - JWT util · Encodes and validates JWTs used for stateless authentication.
backend/src/main/java/com/corex/util/JwtUtil.java - Scheduler · Backend scheduled work and maintenance tasks.
backend/src/main/java/com/corex/service/SchedulerService.java - User repo · Persistence access for users and auth-related lookups.
backend/src/main/java/com/corex/repository/UserRepository.java - Session repo · Persistence access for session or token-tracking records.
backend/src/main/java/com/corex/repository/SessionRepository.java - Audit repo · Persistence access for audit log records.
backend/src/main/java/com/corex/repository/AuditLogRepository.java - Metrics repo · Persistence access for request metrics records.
backend/src/main/java/com/corex/repository/MetricsRepository.java
Persistence
Relational schema and shared database-backed state.
- MySQL schema · Database schema bootstrap for the backend data model.
scheme/schema.sql
Connections 30
- App entry → React dashboard: mounts · Bootstraps the React dashboard.
- React dashboard → Auth API: calls · Dashboard invokes authentication endpoints.
- React dashboard → Audit API: calls · Dashboard can view audit data through the API.
- React dashboard → Metrics API: calls · Dashboard can view metrics data through the API.
- React dashboard → Role test: calls · Dashboard may exercise protected role-gated routes.
- CORS config → React dashboard: permits · Enables browser access from the frontend origin.
- Corex app → CORS config: loads · Application wires web configuration.
- Corex app → Password config: loads · Application wires security support.
- Corex app → Security config: loads · Application enables Spring Security configuration.
- Security config → JWT filter: adds · Security chain includes JWT authentication.
- Security config → Metrics filter: adds · Security chain includes request metrics capture.
- Security config → Audit filter: adds · Security chain includes request auditing.
- JWT filter → JWT util: uses · Filter delegates token validation and parsing.
- JWT filter → Auth API: protects · Authenticated requests reach controllers after token validation.
- Metrics filter → Metrics repo: records · Metrics filter persists usage statistics.
- Audit filter → Audit repo: records · Audit filter persists request audit events.
- Auth API → Auth service: delegates · Controller passes login and registration flows to service logic.
- Auth service → User repo: uses · Service reads and writes users.
- Auth service → Session repo: uses · Service tracks login or refresh state.
- Auth service → JWT util: issues · Service creates and validates tokens.
- Auth service → Password config: uses · Service relies on password encoding.
- Audit API → Audit repo: reads · Admin endpoint queries audit history.
- Metrics API → Metrics repo: reads · Admin endpoint queries request metrics.
- Role test → Security config: gated by · Protected controller demonstrates role-based access control.
- User repo → MySQL schema: maps to · Repository persists user entities in the relational schema.
- Session repo → MySQL schema: maps to · Repository persists session records in the relational schema.
- Audit repo → MySQL schema: maps to · Repository persists audit logs in the relational schema.
- Metrics repo → MySQL schema: maps to · Repository persists metrics in the relational schema.
- Scheduler → Audit repo: maintains · Background work can coordinate with persisted telemetry.
- Scheduler → Metrics repo: maintains · Background work can coordinate with persisted metrics.