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example.py
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example.py
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from dataclasses import dataclass
from typing import Any, Dict, List, Optional
from example_models.users_model import Users
from zara.application.application import ASGIApplication, Request, Router
from zara.application.authentication import auth_required
from zara.application.events import Event
from zara.application.validation import (
Required,
ValidatorBase,
check_required_fields,
validate,
)
from zara.asgi.server import ASGIServer
from zara.errors import UnauthenticatedError
from zara.utilities.database.models.configuration_model import (
Configuration,
OpenIDProvider,
)
from zara.utilities.database.models.public_configuration_model import (
PublicConfiguration,
)
from zara.utilities.jwt_encode_decode import (
create_password,
get_token_from_local_system,
get_token_from_openid_provider,
)
SECRET_KEY = "your_application_secret"
ALGORITHM = "HS256"
CLIENT_ID = "local"
CLIENT_SECRET = "I3EUXRwR1W1fSz2ZYy7XZOnmKSn7uruK" # If necessary
REDIRECT_URI = "http://localhost:8000/callback"
app = ASGIApplication()
router = Router()
@dataclass
class RegisterValidator(ValidatorBase):
name: Required[str] = None
receive_marketing: bool = False
email: Optional[str] = None
async def validate(self) -> List[Dict[str, Any]]:
errors = []
required_missing = check_required_fields(self)
for field in required_missing:
errors.append(
{
"field": field,
"message": f"validationErrors.{field}Missing",
}
)
if self.receive_marketing and not self.email:
errors.append(
{
"field": "email",
"message": "validationErrors.emailRequiredForMarketing",
}
)
if self.email is not None:
if "@" not in self.email or "." not in self.email:
errors.append(
{
"field": "email",
"message": "validationErrors.emailInvalid",
}
)
return errors
app.add_router(router)
@router.get("/")
async def hello_world(request: Request):
return b"Hello, World!"
@router.post("/user/create/{username:str}")
async def hello_world_create(request: Request, username: str):
user = await Users(
name="John Smith",
username=username,
email_address="john@smith.site",
).create()
request.logger.warning(f"Created user: {user}")
tenant_entry, _ = await Configuration.first_or_create(request.logger)
tenant_secret = tenant_entry.token_secret
request.logger.warning(f"tenant secret: {tenant_secret}")
public_entry, _ = await PublicConfiguration.first_or_create(request.logger)
public_secret = public_entry.token_secret
request.logger.warning(f"public secret: {public_secret}")
password = create_password(
"password", f"{public_secret}{tenant_secret}{user.token_secret}".encode("utf-8")
)
user.password_hash = password[0]
user.save()
request.logger.debug(f"Created user: {user}")
return user
@router.get("/user/{id:str}")
async def get_user(request: Request, id: str):
user = await Users.get(id=id)
return user
@router.post("/validate")
@validate(RegisterValidator)
async def validate(request: Request):
return b"Valid!"
# Second router
router_two = Router(name="two", prefix="/two")
app.add_router(router_two)
@router.post("/create-openid-provider")
async def create_openid_provider(request: Request):
data = await request.json()
user = await Users.get(username=data.get("username"))
if not user:
return {"error": "User not found"}, 404
if user.is_system:
return {"error": "User is system"}, 403
openid_provider = OpenIDProvider(
client_id=data.get("client_id"),
client_secret=data.get("client_secret"),
redirect_uri=data.get("redirect_uri"),
scope=data.get("scope"),
issuer=data.get("issuer"),
is_active=True,
)
await openid_provider.create()
return openid_provider.as_dict()
@router.post("/update-user")
async def update_user(request: Request):
data = await request.json()
user = await Users.get(username=data.get("username"))
if not user:
return {"error": "User not found"}, 404
if user.is_system:
return {"error": "User is system"}, 403
user.set(
openid_username=data.get("openid_username"),
openid_provider=data.get("openid_provider"),
)
await user.save()
return user.as_dict()
@router.post("/login")
async def login(request: Request):
data = await request.json()
username = data.get("username")
password = data.get("password")
if not username or not password:
return {"error": "Username and password are required"}, 400
user = await Users.get(username=username)
if not user:
return {"error": "User not found"}, 404
config = None
if not user.is_system and user.openid_provider is not None:
openid_provider = await OpenIDProvider.get(id=user.openid_provider)
config = {
"client_id": openid_provider.client_id,
"client_secret": openid_provider.client_secret,
"redirect_uri": openid_provider.redirect_uri,
"token_url": openid_provider.issuer.replace("localhost", "keycloak"),
}
try:
token_response = await get_token_from_openid_provider(
user.openid_username or username,
password,
request.logger,
endpoint_config=config,
)
if "error" in token_response:
return {"error": token_response["error_description"]}, 401
request.set_cookie("refreshToken", token_response["refresh_token"])
return {
"access_token": token_response["access_token"],
"token_type": "Bearer",
}
except Exception as e:
if "401" in str(e):
raise UnauthenticatedError()
else:
request.logger.error(e)
else: # local system login
token_response = await get_token_from_local_system(
username, password, request.logger
)
@router_two.get("/greet")
async def greet(request: Request):
return b"Greetings!"
@router.post("/permit")
@auth_required(roles=["manage-account"])
async def permit(request: Request):
return b"Permitted!"
async def after_request(event: Event):
event.logger.debug(f"AfterRequest fired: {event.data}")
app.add_listener("AfterRequest", after_request)
async def on_scheduled_event(event: Event):
event.logger.debug(f"OnScheduledEvent fired: {event.data}")
app.add_listener("OnScheduledEvent", on_scheduled_event)
server = ASGIServer(app)
server.run()