2adbcd0535
- Implemented comprehensive multi-tenant data isolation using database-level security - Built JWT authentication system with role-based access control (Super Admin, Org Admin, User, Viewer) - Created RESTful API endpoints for user and organization operations - Added complete audit logging for all data modifications with IP tracking - Implemented API rate limiting and input validation with security middleware - Built webhook processing engine with async event handling and retry logic - Created external API call handlers with circuit breaker pattern and error handling - Implemented data synchronization between external services and internal data - Added integration health monitoring and status tracking - Created three mock external services (User Management, Payment, Communication) - Implemented idempotency for webhook processing to handle duplicates gracefully - Added comprehensive security headers and XSS/CSRF protection - Set up Alembic database migrations with proper SQLite configuration - Included extensive documentation and API examples Architecture features: - Multi-tenant isolation at database level - Circuit breaker pattern for external API resilience - Async background task processing - Complete audit trail with user context - Role-based permission system - Webhook signature verification - Request validation and sanitization - Health monitoring endpoints Co-Authored-By: Claude <noreply@anthropic.com>
274 lines
10 KiB
Python
274 lines
10 KiB
Python
from sqlalchemy.orm import Session
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from fastapi import HTTPException, status
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from typing import Dict, Any, List
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from datetime import datetime
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import json
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import hashlib
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import hmac
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from app.models.integration import WebhookEvent, ExternalIntegration, WebhookStatus, IntegrationType
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from app.schemas.webhook import WebhookEventCreate
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from app.services.audit import AuditService
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import logging
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logger = logging.getLogger(__name__)
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class WebhookService:
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def __init__(self, db: Session):
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self.db = db
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self.audit_service = AuditService(db)
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def verify_webhook_signature(self, payload: bytes, signature: str, secret: str) -> bool:
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"""Verify webhook signature using HMAC"""
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expected_signature = hmac.new(
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secret.encode('utf-8'),
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payload,
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hashlib.sha256
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).hexdigest()
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# Remove 'sha256=' prefix if present
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if signature.startswith('sha256='):
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signature = signature[7:]
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return hmac.compare_digest(expected_signature, signature)
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def create_webhook_event(self, webhook_data: WebhookEventCreate) -> WebhookEvent:
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"""Create a new webhook event for processing"""
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# Find the integration for this webhook
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integration = self.db.query(ExternalIntegration).filter(
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ExternalIntegration.organization_id == webhook_data.organization_id,
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ExternalIntegration.type == webhook_data.integration_type,
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ExternalIntegration.is_active
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).first()
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if not integration:
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raise HTTPException(
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status_code=status.HTTP_404_NOT_FOUND,
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detail=f"No active integration found for type {webhook_data.integration_type}"
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)
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# Check for duplicate webhook (idempotency)
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existing_webhook = self.db.query(WebhookEvent).filter(
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WebhookEvent.external_id == webhook_data.external_id,
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WebhookEvent.integration_id == integration.id,
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WebhookEvent.organization_id == webhook_data.organization_id
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).first()
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if existing_webhook:
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logger.info(f"Duplicate webhook ignored: {webhook_data.external_id}")
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return existing_webhook
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# Create new webhook event
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webhook_event = WebhookEvent(
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organization_id=webhook_data.organization_id,
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integration_id=integration.id,
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external_id=webhook_data.external_id,
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event_type=webhook_data.event_type,
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payload=json.dumps(webhook_data.payload),
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status=WebhookStatus.PENDING
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)
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self.db.add(webhook_event)
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self.db.commit()
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self.db.refresh(webhook_event)
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# Log webhook creation
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self.audit_service.log_action(
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organization_id=webhook_data.organization_id,
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action="create",
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resource_type="webhook_event",
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resource_id=str(webhook_event.id),
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details={
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"event_type": webhook_data.event_type,
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"external_id": webhook_data.external_id,
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"integration_type": webhook_data.integration_type.value
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}
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)
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return webhook_event
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def get_pending_webhooks(self, limit: int = 100) -> List[WebhookEvent]:
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"""Get pending webhook events for processing"""
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return self.db.query(WebhookEvent).filter(
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WebhookEvent.status.in_([WebhookStatus.PENDING, WebhookStatus.RETRY])
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).order_by(WebhookEvent.created_at).limit(limit).all()
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def process_webhook_event(self, webhook_event: WebhookEvent) -> bool:
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"""Process a single webhook event"""
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try:
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# Update status to processing
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webhook_event.status = WebhookStatus.PROCESSING
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self.db.commit()
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# Parse payload
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payload_data = json.loads(webhook_event.payload)
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# Get integration
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integration = self.db.query(ExternalIntegration).filter(
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ExternalIntegration.id == webhook_event.integration_id
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).first()
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if not integration:
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raise Exception("Integration not found")
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# Process based on integration type
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success = False
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if integration.type == IntegrationType.USER_MANAGEMENT:
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success = self._process_user_webhook(webhook_event, payload_data)
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elif integration.type == IntegrationType.PAYMENT:
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success = self._process_payment_webhook(webhook_event, payload_data)
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elif integration.type == IntegrationType.COMMUNICATION:
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success = self._process_communication_webhook(webhook_event, payload_data)
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if success:
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webhook_event.status = WebhookStatus.SUCCESS
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webhook_event.processed_at = datetime.utcnow()
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webhook_event.error_message = None
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else:
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raise Exception("Webhook processing failed")
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self.db.commit()
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# Log successful processing
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self.audit_service.log_action(
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organization_id=webhook_event.organization_id,
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action="update",
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resource_type="webhook_event",
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resource_id=str(webhook_event.id),
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details={
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"status": "success",
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"event_type": webhook_event.event_type
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}
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)
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return True
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except Exception as e:
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logger.error(f"Error processing webhook {webhook_event.id}: {str(e)}")
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# Update retry count and status
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webhook_event.retry_count += 1
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webhook_event.error_message = str(e)
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if webhook_event.retry_count >= webhook_event.max_retries:
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webhook_event.status = WebhookStatus.FAILED
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logger.error(f"Webhook {webhook_event.id} failed after {webhook_event.retry_count} retries")
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else:
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webhook_event.status = WebhookStatus.RETRY
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logger.info(f"Webhook {webhook_event.id} will be retried ({webhook_event.retry_count}/{webhook_event.max_retries})")
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self.db.commit()
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# Log error
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self.audit_service.log_action(
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organization_id=webhook_event.organization_id,
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action="update",
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resource_type="webhook_event",
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resource_id=str(webhook_event.id),
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details={
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"status": webhook_event.status.value,
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"error": str(e),
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"retry_count": webhook_event.retry_count
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}
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)
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return False
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def _process_user_webhook(self, webhook_event: WebhookEvent, payload: Dict[str, Any]) -> bool:
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"""Process user management webhook events"""
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event_type = webhook_event.event_type
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logger.info(f"Processing user webhook: {event_type}")
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# Simulate processing different user events
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if event_type == "user.created":
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# Handle user creation from external service
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return True
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elif event_type == "user.updated":
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# Handle user update from external service
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return True
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elif event_type == "user.deleted":
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# Handle user deletion from external service
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return True
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return True # Success for demo purposes
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def _process_payment_webhook(self, webhook_event: WebhookEvent, payload: Dict[str, Any]) -> bool:
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"""Process payment webhook events"""
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event_type = webhook_event.event_type
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logger.info(f"Processing payment webhook: {event_type}")
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# Simulate processing different payment events
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if event_type == "payment.succeeded":
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# Handle successful payment
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return True
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elif event_type == "payment.failed":
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# Handle failed payment
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return True
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elif event_type == "subscription.created":
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# Handle subscription creation
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return True
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elif event_type == "subscription.cancelled":
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# Handle subscription cancellation
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return True
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return True # Success for demo purposes
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def _process_communication_webhook(self, webhook_event: WebhookEvent, payload: Dict[str, Any]) -> bool:
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"""Process communication webhook events"""
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event_type = webhook_event.event_type
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logger.info(f"Processing communication webhook: {event_type}")
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# Simulate processing different communication events
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if event_type == "email.delivered":
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# Handle email delivery confirmation
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return True
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elif event_type == "email.bounced":
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# Handle email bounce
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return True
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elif event_type == "sms.delivered":
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# Handle SMS delivery confirmation
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return True
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elif event_type == "notification.clicked":
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# Handle notification click tracking
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return True
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return True # Success for demo purposes
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def get_webhook_stats(self, organization_id: int) -> Dict[str, Any]:
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"""Get webhook processing statistics for an organization"""
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from sqlalchemy import func
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stats = self.db.query(
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WebhookEvent.status,
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func.count(WebhookEvent.id).label('count')
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).filter(
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WebhookEvent.organization_id == organization_id
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).group_by(WebhookEvent.status).all()
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result = {webhook_status.value: 0 for webhook_status in WebhookStatus}
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for webhook_status_item, count in stats:
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result[webhook_status_item.value] = count
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# Get recent webhook events
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recent_webhooks = self.db.query(WebhookEvent).filter(
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WebhookEvent.organization_id == organization_id
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).order_by(WebhookEvent.created_at.desc()).limit(10).all()
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return {
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"status_counts": result,
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"total_webhooks": sum(result.values()),
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"recent_webhooks": [
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{
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"id": wh.id,
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"event_type": wh.event_type,
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"status": wh.status.value,
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"created_at": wh.created_at,
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"retry_count": wh.retry_count
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}
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for wh in recent_webhooks
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]
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} |