Auth Service

The Auth service handles user authentication, session management, API tokens, and service account permissions. It is the single source of truth for identity and authorization across all services.

Features

• User Management: Create, update, and delete users
• Session Management: JWT-based authentication with configurable TTL
• API Tokens: Scoped tokens for programmatic access (ecloud_ prefixed)
• Service Accounts: Identity-based permission model with NATS-pushed scopes
• Event Publishing: Publishes user and identity events to NATS
• Token Validation: Service-to-service endpoint for token revocation and permission checks
• Rate Limiting: IP-based and user-based rate limiting on login

Architecture

Access Control

Session Auth (website only)

Token and service account management requires a session JWT obtained by logging in through the web dashboard. API tokens cannot be used to create, modify, or delete tokens or service accounts.

Operations requiring session auth:

• Create / list API tokens
• Create / list / update / delete service accounts
• Create / list service account tokens

Token Permission Reads

The auth service is the only service that can read permissions for a given token. Other services (compute, storage) validate API tokens by calling the auth service's /api/tokens/{id}/check endpoint with a service key. This ensures the auth service remains the single source of truth for revocation and scope changes.

Service-to-Service Auth

Internal endpoints use X-Service-Key header authentication. These are not accessible from the public internet.

API Endpoints

Base URL: https://auth.cloud.eddisonso.com

Authentication

Method	Path	Auth	Description
POST	/api/login	None	Authenticate user, returns JWT
POST	/api/logout	Session	Invalidate session
GET	/api/session	Session	Get current session info

API Tokens

Method	Path	Auth	Description
POST	/api/tokens	Session	Create a new API token
GET	/api/tokens	Session	List user's API tokens

Service Accounts

Method	Path	Auth	Description
POST	/api/service-accounts	Session	Create a service account
GET	/api/service-accounts	Session	List user's service accounts
GET	/api/service-accounts/{id}	Session	Get service account details
PUT	/api/service-accounts/{id}/scopes	Session	Update service account scopes
DELETE	/api/service-accounts/{id}	Session	Delete a service account
POST	/api/service-accounts/{id}/tokens	Session	Create a token for a service account
GET	/api/service-accounts/{id}/tokens	Session	List tokens for a service account

Service-to-Service (internal)

Method	Path	Auth	Description
GET	/api/tokens/{id}/check	Service key	Check token validity and get scopes
GET	/api/users	Service key	List all users
GET	/api/identity-permissions	Service key	List all service account permissions

Admin (requires admin role)

Method	Path	Auth	Description
GET	/admin/users	Admin session	List all users
POST	/admin/users	Admin session	Create new user
DELETE	/admin/users	Admin session	Delete user
GET	/admin/sessions	Admin session	List active sessions

Token Types

Session JWT

Issued on login, stored as a cookie. Used for web dashboard access.

{
  "user_id": "abc123",
  "username": "eddison",
  "display_name": "Eddison",
  "exp": 1707436800,
  "iat": 1707350400
}

API Token

Prefixed with ecloud_, contains scoped permissions. Used for programmatic API access.

{
  "user_id": "abc123",
  "token_id": "tok_xyz",
  "type": "api_token",
  "scopes": {
    "compute.abc123.containers": ["create", "read", "delete"],
    "storage.abc123.files": ["read"]
  }
}

Scope Format

Scopes follow the pattern: <root>.<user_id>[.<resource>[.<id>]]

Root	Resources
compute	containers, keys
storage	namespaces, files

Actions: create, read, update, delete

Scopes cascade — compute.uid.containers with read grants read access to all containers, while compute.uid.containers.abc with read grants access to only that container.

Database Schema

CREATE TABLE users (
    id SERIAL PRIMARY KEY,
    public_id TEXT UNIQUE NOT NULL,
    username TEXT UNIQUE NOT NULL,
    display_name TEXT,
    password_hash TEXT NOT NULL,
    created_at TIMESTAMPTZ DEFAULT NOW(),
    updated_at TIMESTAMPTZ DEFAULT NOW()
);

CREATE TABLE sessions (
    id TEXT PRIMARY KEY,
    user_id INTEGER REFERENCES users(id),
    expires_at TIMESTAMPTZ NOT NULL,
    created_at TIMESTAMPTZ DEFAULT NOW()
);

CREATE TABLE api_tokens (
    id TEXT PRIMARY KEY,
    user_id TEXT NOT NULL,
    name TEXT NOT NULL,
    token_hash TEXT NOT NULL,
    scopes JSONB NOT NULL DEFAULT '{}',
    expires_at BIGINT DEFAULT 0,
    last_used_at BIGINT DEFAULT 0,
    service_account_id TEXT REFERENCES service_accounts(id),
    created_at BIGINT NOT NULL
);

CREATE TABLE service_accounts (
    id TEXT PRIMARY KEY,
    user_id TEXT NOT NULL,
    name TEXT NOT NULL,
    scopes JSONB NOT NULL DEFAULT '{}',
    version BIGINT DEFAULT 1,
    created_at BIGINT NOT NULL
);

Events Published

Subject	Description
auth.user.{id}.created	New user registered
auth.user.{id}.deleted	User deleted
auth.user.{id}.updated	User profile updated
auth.session.{id}.created	User logged in
auth.session.{id}.invalidated	User logged out
auth.identity.{sa_id}.updated	Service account permissions changed
auth.identity.{sa_id}.deleted	Service account deleted

Configuration

Flag	Description	Default
-addr	HTTP listen address	:8080
-session-ttl	Session lifetime	24h
-log-service	Log service gRPC address	(disabled)

Env Variable	Description
DATABASE_URL	PostgreSQL connection string
JWT_SECRET	Secret for signing JWTs
ADMIN_USERNAME	Admin user identifier
DEFAULT_USERNAME	Default user to create on startup
DEFAULT_PASSWORD	Password for default user
NATS_URL	NATS server URL
SERVICE_API_KEY	Shared key for service-to-service auth

Health Check

GET /healthz → 200 OK