154 lines
5.6 KiB
Python
154 lines
5.6 KiB
Python
from __future__ import annotations
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from contextlib import asynccontextmanager
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import secrets
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from typing import AsyncGenerator
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from fastapi import Depends,FastAPI
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from fastapi.exceptions import RequestValidationError
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from fastapi.middleware.cors import CORSMiddleware
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from fastapi.openapi.docs import get_redoc_html, get_swagger_ui_html
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from fastapi.responses import HTMLResponse
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from fastapi.security import HTTPBasic, HTTPBasicCredentials
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from src.application.domain.enums import LogFormat,LogLevel
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from src.application.domain.exceptions import ApplicationException,UnauthorizedException
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from src.infrastructure.config.settings import get_settings
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from src.infrastructure.vault import JwtKeyStore, start_jwt_keys_scheduler
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from src.infrastructure.utils import generate_instance_id
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from src.infrastructure.logger import logger
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from src.infrastructure.metrics import PrometheusMetricsMiddleware, metrics_response
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from src.infrastructure.config import settings
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from src.presentation.handlers import application_exception_handler,unhandled_exception_handler,validation_exception_handler
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from src.presentation.middleware import TraceIDMiddleware, SecurityHeadersMiddleware
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from src.presentation.routing import kyc_router
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security = HTTPBasic()
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async def verify_credentials(credentials: HTTPBasicCredentials = Depends(security)) -> HTTPBasicCredentials:
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user_ok = secrets.compare_digest(credentials.username, settings.DOCS_USERNAME)
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pass_ok = secrets.compare_digest(credentials.password, settings.DOCS_PASSWORD)
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if not (user_ok and pass_ok):
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exception = UnauthorizedException()
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exception.headers = {'WWW-Authenticate': 'Basic'}
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raise exception
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return credentials
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@asynccontextmanager
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async def lifespan(app: FastAPI) -> AsyncGenerator[None, None]:
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instance_id = generate_instance_id()
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logger.set_format(LogFormat(settings.LOG_FORMAT.lower()))
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logger.set_min_level(LogLevel[settings.LOG_LEVEL.upper()])
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logger.set_instance_id(instance_id)
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logger.info(f'Users service instance started with id {instance_id}')
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jwt_store = JwtKeyStore(
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vault_addr=settings.VAULT_ADDR,
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vault_role_id=settings.VAULT_ROLE_ID,
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vault_secret_id=settings.VAULT_SECRET_ID,
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vault_namespace=settings.VAULT_NAMESPACE,
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mount_point=settings.VAULT_MOUNT_POINT,
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kid_path=settings.VAULT_JWT_KID_PATH,
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kids_prefix=settings.VAULT_JWT_KIDS_PREFIX,
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)
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await jwt_store.refresh()
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jwt_scheduler = start_jwt_keys_scheduler(jwt_store, refresh_seconds=settings.JWT_KEYS_REFRESH_SECONDS)
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app.state.jwt_key_store = jwt_store
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app.state.jwt_keys_scheduler = jwt_scheduler
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try:
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yield
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finally:
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app.state.jwt_keys_scheduler.shutdown(wait=False)
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logger.info(f'KYC service instance ended with id {instance_id}')
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app: FastAPI = FastAPI(
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redoc_url=None,
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docs_url=None,
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lifespan=lifespan,
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title='Elcsa Users Service'
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)
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app.add_exception_handler(ApplicationException, application_exception_handler)
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app.add_exception_handler(RequestValidationError, validation_exception_handler)
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app.add_exception_handler(Exception, unhandled_exception_handler)
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app.add_middleware(PrometheusMetricsMiddleware)
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app.include_router(kyc_router)
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app.add_middleware(TraceIDMiddleware, logger=logger)
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app.add_middleware(
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SecurityHeadersMiddleware,
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hsts=True,
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hsts_preload=False,
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frame_options='DENY',
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referrer_policy='strict-origin-when-cross-origin',
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content_security_policy=(
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"default-src 'self'; "
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"script-src 'self' 'unsafe-inline' https://unpkg.com https://cdn.jsdelivr.net; "
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"style-src 'self' 'unsafe-inline' https://unpkg.com https://cdn.jsdelivr.net; "
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"img-src 'self' data: https:; "
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"font-src 'self' https://unpkg.com https://cdn.jsdelivr.net data:; "
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"connect-src 'self'; "
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"frame-ancestors 'none'; "
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"base-uri 'self'; "
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"object-src 'none'"
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),
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)
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app.add_middleware(
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CORSMiddleware,
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allow_origins=[],
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allow_origin_regex=settings.CORS_ALLOW_ORIGIN_REGEX,
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allow_credentials=True,
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allow_methods=['*'],
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allow_headers=['*'],
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)
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@app.get('/docs', include_in_schema=False)
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async def custom_swagger_ui_html(_credentials: HTTPBasicCredentials = Depends(verify_credentials)) -> HTMLResponse:
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'''Custom Swagger documentation, optionally protected with basic authentication.'''
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return get_swagger_ui_html(
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openapi_url=getattr(app, 'openapi_url', '/openapi.json'),
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title=getattr(app, 'title', 'FastAPI') + ' - Swagger UI',
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oauth2_redirect_url=getattr(app, 'swagger_ui_oauth2_redirect_url', None),
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swagger_js_url='https://unpkg.com/swagger-ui-dist@5/swagger-ui-bundle.js',
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swagger_css_url='https://unpkg.com/swagger-ui-dist@5/swagger-ui.css',
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)
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@app.get('/redoc', include_in_schema=False)
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async def custom_redoc_html(_credentials: HTTPBasicCredentials = Depends(verify_credentials)) -> HTMLResponse:
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'''Custom ReDoc documentation, optionally protected with basic authentication.'''
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return get_redoc_html(
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openapi_url=getattr(app, 'openapi_url', '/openapi.json'),
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title=getattr(app, 'title', 'FastAPI') + ' - ReDoc',
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redoc_js_url='https://cdn.jsdelivr.net/npm/redoc@next/bundles/redoc.standalone.js',
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)
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@app.get('/metrics', include_in_schema=False)
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async def metrics() -> Response:
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return await metrics_response()
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@app.post('/ping')
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async def ping() -> dict[str, str]:
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return {
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'message': 'pong',
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'status': 'ok',
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}
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@app.get('/healthcheck')
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@app.get('/health')
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async def health() -> dict[str, str]:
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return {
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'status': 'ok',
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}
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