cameleer-saas/CLAUDE.md

# CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

## Project

Cameleer SaaS — multi-tenant SaaS platform wrapping the Cameleer observability stack (Java agent + server) for Apache Camel applications. Customers get managed observability for their Camel integrations without running infrastructure.

## Ecosystem

This repo is the SaaS layer on top of two proven components:

- **cameleer3** (sibling repo) — Java agent using ByteBuddy for zero-code instrumentation of Camel apps. Captures route executions, processor traces, payloads, metrics, and route graph topology. Deploys as `-javaagent` JAR.
- **cameleer3-server** (sibling repo) — Spring Boot observability backend. Receives agent data via HTTP, pushes config/commands via SSE. PostgreSQL + ClickHouse storage. React SPA dashboard. JWT auth with Ed25519 config signing. Docker container orchestration for app deployments.
- **cameleer-website** — Marketing site (Astro 5)
- **design-system** — Shared React component library (`@cameleer/design-system` on Gitea npm registry)

Agent-server protocol is defined in `cameleer3/cameleer3-common/PROTOCOL.md`. The agent and server are mature, proven components — this repo wraps them with multi-tenancy, billing, and self-service onboarding.

## Key Classes

### Java Backend (`src/main/java/net/siegeln/cameleer/saas/`)

**config/** — Security, tenant isolation, web config
- `SecurityConfig.java` — OAuth2 JWT decoder (ES384, issuer/audience validation, scope extraction)
- `TenantIsolationInterceptor.java` — HandlerInterceptor on `/api/**`; JWT org_id -> TenantContext, path variable validation, fail-closed
- `TenantContext.java` — ThreadLocal<UUID> tenant ID storage
- `WebConfig.java` — registers TenantIsolationInterceptor
- `PublicConfigController.java` — GET /api/config (Logto endpoint, SPA client ID, scopes)
- `MeController.java` — GET /api/me (authenticated user, tenant list)

**tenant/** — Tenant lifecycle
- `TenantEntity.java` — JPA entity (id, name, slug, tier, status, logto_org_id, stripe IDs, settings JSONB)
- `TenantService.java` — create tenant -> Logto org, activate, suspend
- `TenantController.java` — POST create, GET list, GET by ID

**license/** — License management
- `LicenseEntity.java` — JPA entity (id, tenant_id, tier, features JSONB, limits JSONB, expires_at)
- `LicenseService.java` — generation, validation, feature/limit lookups
- `LicenseController.java` — POST issue, GET verify, DELETE revoke

**identity/** — Logto & server integration
- `LogtoConfig.java` — Logto endpoint, M2M credentials (reads from bootstrap file)
- `LogtoManagementClient.java` — Logto Management API calls (create org, create user, add to org)
- `ServerApiClient.java` — M2M client for cameleer3-server API (Logto M2M token, `X-Cameleer-Protocol-Version: 1` header)

**audit/** — Audit logging
- `AuditEntity.java` — JPA entity (actor_id, tenant_id, action, resource, status)
- `AuditService.java` — log audit events (TENANT_CREATE, TENANT_UPDATE, etc.)

### React Frontend (`ui/src/`)

- `main.tsx` — React 19 root
- `router.tsx` — /login, /callback, / -> OrgResolver -> Layout -> pages
- `config.ts` — fetch Logto config from /platform/api/config
- `auth/useAuth.ts` — auth hook (isAuthenticated, logout, signIn)
- `auth/useOrganization.ts` — Zustand store for current tenant
- `auth/useScopes.ts` — decode JWT scopes, hasScope()
- `auth/ProtectedRoute.tsx` — guard (redirects to /login)
- `pages/DashboardPage.tsx` — tenant dashboard
- `pages/LicensePage.tsx` — license info
- `pages/AdminTenantsPage.tsx` — platform admin tenant management

### Custom Sign-in UI (`ui/sign-in/src/`)

- `SignInPage.tsx` — form with @cameleer/design-system components
- `experience-api.ts` — Logto Experience API client (4-step: init -> verify -> identify -> submit)

## Architecture Context

The existing cameleer3-server already has single-tenant auth (JWT, RBAC, bootstrap tokens, OIDC). The SaaS layer must:
- Add multi-tenancy (tenant isolation of agent data, diagrams, configs)
- Provide self-service signup, billing, and team management
- Generate per-tenant bootstrap tokens for agent registration
- Proxy or federate access to tenant-specific cameleer3-server instances
- Enforce usage quotas and metered billing

### Routing (single-domain, path-based via Traefik)

All services on one hostname. Two env vars control everything: `PUBLIC_HOST` + `PUBLIC_PROTOCOL`.

| Path | Target | Notes |
|------|--------|-------|
| `/platform/*` | cameleer-saas:8080 | SPA + API (`server.servlet.context-path: /platform`) |
| `/server/*` | cameleer3-server-ui:80 | Server dashboard (strip-prefix + `BASE_PATH=/server`) |
| `/` | redirect -> `/platform/` | Via `docker/traefik-dynamic.yml` |
| `/*` (catch-all) | cameleer-logto:3001 (priority=1) | Custom sign-in UI, OIDC, interaction |

- SPA assets at `/_app/` (Vite `assetsDir: '_app'`) to avoid conflict with Logto's `/assets/`
- Logto `ENDPOINT` = `${PUBLIC_PROTOCOL}://${PUBLIC_HOST}` (same domain, same origin)
- TLS: self-signed cert init container (`traefik-certs`) for dev, ACME for production
- Root `/` -> `/platform/` redirect via Traefik file provider (`docker/traefik-dynamic.yml`)
- LoginPage auto-redirects to Logto OIDC (no intermediate button)

### Docker Networks

Two networks in docker-compose.yml:

| Network | Name on Host | Purpose |
|---------|-------------|---------|
| `cameleer` | `cameleer-saas_cameleer` | Compose default — all services (DB, Logto, SaaS, server) |
| `cameleer-traefik` | `cameleer-traefik` (fixed `name:`) | Traefik + server + deployed app containers |

The `cameleer-traefik` network uses `name: cameleer-traefik` (no compose project prefix) so `DockerNetworkManager.ensureNetwork("cameleer-traefik")` in the server finds it. The server joins with DNS alias `cameleer3-server`, matching `CAMELEER_SERVER_URL=http://cameleer3-server:8081`. Per-environment networks (`cameleer-env-{slug}`) are created dynamically by the server's `DockerNetworkManager`.

### Custom sign-in UI (`ui/sign-in/`)

Separate Vite+React SPA replacing Logto's default sign-in page. Visually matches cameleer3-server LoginPage.

- Built as custom Logto Docker image (`cameleer-logto`): `ui/sign-in/Dockerfile` = node build stage + `FROM ghcr.io/logto-io/logto:latest` + COPY dist over `/etc/logto/packages/experience/dist/`
- Uses `@cameleer/design-system` components (Card, Input, Button, FormField, Alert)
- Authenticates via Logto Experience API (4-step: init -> verify password -> identify -> submit -> redirect)
- `CUSTOM_UI_PATH` env var does NOT work for Logto OSS — must volume-mount or replace the experience dist directory
- Favicon bundled in `ui/sign-in/public/favicon.svg` (served by Logto, not SaaS)

### Auth enforcement

- All API endpoints enforce OAuth2 scopes via `@PreAuthorize("hasAuthority('SCOPE_xxx')")` annotations
- Tenant isolation enforced by `TenantIsolationInterceptor` (a single `HandlerInterceptor` on `/api/**` that resolves JWT org_id to TenantContext and validates `{tenantId}`, `{environmentId}`, `{appId}` path variables; fail-closed, platform admins bypass)
- 13 OAuth2 scopes on the Logto API resource (`https://api.cameleer.local`): 10 platform scopes + 3 server scopes (`server:admin`, `server:operator`, `server:viewer`), served to the frontend from `GET /platform/api/config`
- Server scopes map to server RBAC roles via JWT `scope` claim (SaaS platform path) or `roles` claim (server-ui OIDC login path)
- 4-role model: `saas-vendor` (global, hosted only), org `owner` -> `server:admin`, org `operator` -> `server:operator`, org `viewer` -> `server:viewer`
- `saas-vendor` global role injected via `docker/vendor-seed.sh` (not standard bootstrap) — has `platform:admin` + all tenant scopes
- Custom `JwtDecoder` in `SecurityConfig.java` — ES384 algorithm, `at+jwt` token type, split issuer-uri (string validation) / jwk-set-uri (Docker-internal fetch), audience validation (`https://api.cameleer.local`)
- Logto Custom JWT (Phase 7b in bootstrap) injects a `roles` claim into access tokens based on org roles and global roles — this makes role data available to the server without Logto-specific code

### Server integration (cameleer3-server env vars)

| Env var | Value | Purpose |
|---------|-------|---------|
| `CAMELEER_OIDC_ISSUER_URI` | `${PUBLIC_PROTOCOL}://${PUBLIC_HOST}/oidc` | Token issuer claim validation |
| `CAMELEER_OIDC_JWK_SET_URI` | `http://logto:3001/oidc/jwks` | Docker-internal JWK fetch |
| `CAMELEER_OIDC_TLS_SKIP_VERIFY` | `true` | Skip cert verify for OIDC discovery (dev only — disable in production) |
| `CAMELEER_CORS_ALLOWED_ORIGINS` | `${PUBLIC_PROTOCOL}://${PUBLIC_HOST}` | Allow browser requests through Traefik |
| `BASE_PATH` (server-ui) | `/server` | React Router basename + `<base>` tag |

### Server runtime env vars (docker-compose.dev.yml)

| Env var | Value | Purpose |
|---------|-------|---------|
| `CAMELEER_RUNTIME_ENABLED` | `true` | Enable Docker orchestration |
| `CAMELEER_JAR_STORAGE_PATH` | `/data/jars` | Where JARs are stored inside server container |
| `CAMELEER_RUNTIME_BASE_IMAGE` | `gitea.siegeln.net/cameleer/cameleer-runtime-base:latest` | Base image for deployed apps |
| `CAMELEER_SERVER_URL` | `http://cameleer3-server:8081` | Server URL agents connect to |
| `CAMELEER_ROUTING_DOMAIN` | `${PUBLIC_HOST}` | Domain for Traefik routing labels |
| `CAMELEER_ROUTING_MODE` | `path` | `path` or `subdomain` routing |
| `CAMELEER_JAR_DOCKER_VOLUME` | `cameleer-saas_jardata` | Named volume for Docker-in-Docker JAR mounting |

### Server OIDC role extraction (two paths)

| Path | Token type | Role source | How it works |
|------|-----------|-------------|--------------|
| SaaS platform -> server API | Logto org-scoped access token | `scope` claim | `JwtAuthenticationFilter.extractRolesFromScopes()` reads `server:admin` from scope |
| Server-ui SSO login | Logto JWT access token (via Traditional Web App) | `roles` claim | `OidcTokenExchanger` decodes access_token, reads `roles` injected by Custom JWT |

The server's OIDC config (`OidcConfig`) includes `audience` (RFC 8707 resource indicator) and `additionalScopes`. The `audience` is sent as `resource` in both the authorization request and token exchange, which makes Logto return a JWT access token instead of opaque. The Custom JWT script maps org roles to `roles: ["server:admin"]`. If OIDC returns no roles and the user already exists, `syncOidcRoles` preserves existing local roles.

### Deployment pipeline

App deployment is handled by the cameleer3-server's `DeploymentExecutor` (7-stage async flow):
1. PRE_FLIGHT — validate config, check JAR exists
2. PULL_IMAGE — pull base image if missing
3. CREATE_NETWORK — ensure cameleer-traefik and cameleer-env-{slug} networks
4. START_REPLICAS — create N containers with Traefik labels
5. HEALTH_CHECK — poll `/cameleer/health` on agent port 9464
6. SWAP_TRAFFIC — stop old deployment (blue/green)
7. COMPLETE — mark RUNNING or DEGRADED

Key files:
- `DeploymentExecutor.java` (in cameleer3-server) — async staged deployment
- `DockerRuntimeOrchestrator.java` (in cameleer3-server) — Docker client, container lifecycle
- `docker/runtime-base/Dockerfile` — base image with agent JAR, maps env vars to `-D` system properties
- `ServerApiClient.java` — M2M token acquisition for SaaS->server API calls (agent status). Uses `X-Cameleer-Protocol-Version: 1` header
- Docker socket access: `group_add: ["0"]` in docker-compose.dev.yml (not root group membership in Dockerfile)
- Network: deployed containers join `cameleer-traefik` (routing) + `cameleer-env-{slug}` (isolation)

### Bootstrap (`docker/logto-bootstrap.sh`)

Idempotent script run via `logto-bootstrap` init container. Phases:
1. Wait for Logto + server health
2. Get Management API token (reads `m-default` secret from DB)
3. Create Logto apps (SPA, Traditional with `skipConsent`, M2M with Management API role + server API role)
3b. Create API resource scopes (10 platform + 3 server scopes)
4. Create org roles (owner, operator, viewer with API resource scope assignments) + M2M server role (`cameleer-m2m-server` with `server:admin` scope)
5. Create users (platform owner with Logto console access, viewer for testing read-only OIDC)
6. Create organization, add users with org roles (owner + viewer)
7. Configure cameleer3-server OIDC (`rolesClaim: "roles"`, `audience`, `defaultRoles: ["VIEWER"]`)
7b. Configure Logto Custom JWT for access tokens (maps org roles -> `roles` claim: admin->server:admin, member->server:viewer)
8. Configure Logto sign-in branding (Cameleer colors `#C6820E`/`#D4941E`, logo from `/platform/logo.svg`)
9. Cleanup seeded Logto apps
10. Write bootstrap results to `/data/logto-bootstrap.json`

Platform owner credentials (`SAAS_ADMIN_USER`/`SAAS_ADMIN_PASS`) work for both the SaaS platform and the Logto console (port 3002). The `saas-vendor` global role (hosted only) is created separately via `docker/vendor-seed.sh`.

## Database Migrations

PostgreSQL (Flyway): `src/main/resources/db/migration/`
- V001 — tenants (id, name, slug, tier, status, logto_org_id, stripe IDs, settings JSONB)
- V002 — licenses (id, tenant_id, tier, features JSONB, limits JSONB, expires_at)
- V003 — environments (tenant -> environments 1:N)
- V004 — api_keys (auth tokens for agent registration)
- V005 — apps (Camel applications)
- V006 — deployments (app versions, deployment history)
- V007 — audit_log
- V008 — app resource limits
- V010 — cleanup of migrated tables

## Related Conventions

- Gitea-hosted: `gitea.siegeln.net/cameleer/`
- CI: `.gitea/workflows/` — Gitea Actions
- K8s target: k3s cluster at 192.168.50.86
- Docker images: CI builds and pushes all images — Dockerfiles use multi-stage builds, no local builds needed
  - `cameleer-saas` — SaaS app (frontend + JAR baked in)
  - `cameleer-logto` — custom Logto with sign-in UI baked in
  - `cameleer-runtime-base` — base image for deployed apps (agent JAR + JRE). CI downloads latest agent SNAPSHOT from Gitea Maven registry. Uses `CAMELEER_SERVER_URL` env var (not CAMELEER_EXPORT_ENDPOINT).
- Docker builds: `--no-cache`, `--provenance=false` for Gitea compatibility
- `docker-compose.dev.yml` — exposes ports for direct access, sets `SPRING_PROFILES_ACTIVE: dev`. Volume-mounts `./ui/dist` into the container so local UI builds are served without rebuilding the Docker image (`SPRING_WEB_RESOURCES_STATIC_LOCATIONS` overrides classpath). Adds Docker socket mount, jardata volume, and runtime env vars for container orchestration.
- Design system: import from `@cameleer/design-system` (Gitea npm registry)

## Disabled Skills

- Do NOT use any `gsd:*` skills in this project. This includes all `/gsd:` prefixed commands.