Add user delete process
This commit is contained in:
Urtzi Alfaro
245
services/notification/app/services/tenant_deletion_service.py
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245
services/notification/app/services/tenant_deletion_service.py
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# services/notification/app/services/tenant_deletion_service.py
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"""
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Tenant Data Deletion Service for Notification Service
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Handles deletion of all notification-related data for a tenant
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"""
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from typing import Dict
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from sqlalchemy import select, func, delete
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from sqlalchemy.ext.asyncio import AsyncSession
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from sqlalchemy.dialects.postgresql import UUID
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import structlog
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from shared.services.tenant_deletion import (
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BaseTenantDataDeletionService,
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TenantDataDeletionResult
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)
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from app.models import (
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Notification,
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NotificationTemplate,
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NotificationPreference,
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NotificationLog,
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AuditLog
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)
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logger = structlog.get_logger(__name__)
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class NotificationTenantDeletionService(BaseTenantDataDeletionService):
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"""Service for deleting all notification-related data for a tenant"""
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def __init__(self, db: AsyncSession):
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self.db = db
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self.service_name = "notification"
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async def get_tenant_data_preview(self, tenant_id: str) -> Dict[str, int]:
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"""
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Get counts of what would be deleted for a tenant (dry-run)
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Args:
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tenant_id: The tenant ID to preview deletion for
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Returns:
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Dictionary with entity names and their counts
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"""
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logger.info("notification.tenant_deletion.preview", tenant_id=tenant_id)
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preview = {}
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try:
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# Count notifications
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notification_count = await self.db.scalar(
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select(func.count(Notification.id)).where(
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Notification.tenant_id == UUID(tenant_id)
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)
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)
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preview["notifications"] = notification_count or 0
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# Count tenant-specific notification templates
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template_count = await self.db.scalar(
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select(func.count(NotificationTemplate.id)).where(
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NotificationTemplate.tenant_id == UUID(tenant_id),
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NotificationTemplate.is_system == False # Don't delete system templates
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)
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)
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preview["notification_templates"] = template_count or 0
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# Count notification preferences
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preference_count = await self.db.scalar(
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select(func.count(NotificationPreference.id)).where(
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NotificationPreference.tenant_id == UUID(tenant_id)
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)
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)
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preview["notification_preferences"] = preference_count or 0
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# Count notification logs
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log_count = await self.db.scalar(
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select(func.count(NotificationLog.id)).where(
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NotificationLog.tenant_id == UUID(tenant_id)
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)
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)
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preview["notification_logs"] = log_count or 0
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# Count audit logs
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audit_count = await self.db.scalar(
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select(func.count(AuditLog.id)).where(
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AuditLog.tenant_id == UUID(tenant_id)
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)
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)
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preview["audit_logs"] = audit_count or 0
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logger.info(
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"notification.tenant_deletion.preview_complete",
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tenant_id=tenant_id,
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preview=preview
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)
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except Exception as e:
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logger.error(
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"notification.tenant_deletion.preview_error",
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tenant_id=tenant_id,
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error=str(e),
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exc_info=True
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)
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raise
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return preview
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async def delete_tenant_data(self, tenant_id: str) -> TenantDataDeletionResult:
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"""
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Permanently delete all notification data for a tenant
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Deletion order:
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1. NotificationLog (independent)
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2. NotificationPreference (independent)
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3. Notification (main records)
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4. NotificationTemplate (only tenant-specific, preserve system templates)
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5. AuditLog (independent)
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Note: System templates (is_system=True) are NOT deleted
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Args:
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tenant_id: The tenant ID to delete data for
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Returns:
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TenantDataDeletionResult with deletion counts and any errors
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"""
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logger.info("notification.tenant_deletion.started", tenant_id=tenant_id)
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result = TenantDataDeletionResult(tenant_id=tenant_id, service_name=self.service_name)
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try:
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# Step 1: Delete notification logs
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logger.info("notification.tenant_deletion.deleting_logs", tenant_id=tenant_id)
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logs_result = await self.db.execute(
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delete(NotificationLog).where(
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NotificationLog.tenant_id == UUID(tenant_id)
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)
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)
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result.deleted_counts["notification_logs"] = logs_result.rowcount
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logger.info(
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"notification.tenant_deletion.logs_deleted",
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tenant_id=tenant_id,
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count=logs_result.rowcount
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)
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# Step 2: Delete notification preferences
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logger.info("notification.tenant_deletion.deleting_preferences", tenant_id=tenant_id)
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preferences_result = await self.db.execute(
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delete(NotificationPreference).where(
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NotificationPreference.tenant_id == UUID(tenant_id)
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)
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)
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result.deleted_counts["notification_preferences"] = preferences_result.rowcount
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logger.info(
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"notification.tenant_deletion.preferences_deleted",
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tenant_id=tenant_id,
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count=preferences_result.rowcount
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)
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# Step 3: Delete notifications
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logger.info("notification.tenant_deletion.deleting_notifications", tenant_id=tenant_id)
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notifications_result = await self.db.execute(
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delete(Notification).where(
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Notification.tenant_id == UUID(tenant_id)
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)
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)
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result.deleted_counts["notifications"] = notifications_result.rowcount
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logger.info(
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"notification.tenant_deletion.notifications_deleted",
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tenant_id=tenant_id,
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count=notifications_result.rowcount
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)
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# Step 4: Delete tenant-specific templates (preserve system templates)
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logger.info("notification.tenant_deletion.deleting_templates", tenant_id=tenant_id)
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templates_result = await self.db.execute(
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delete(NotificationTemplate).where(
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NotificationTemplate.tenant_id == UUID(tenant_id),
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NotificationTemplate.is_system == False
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)
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)
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result.deleted_counts["notification_templates"] = templates_result.rowcount
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logger.info(
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"notification.tenant_deletion.templates_deleted",
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tenant_id=tenant_id,
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count=templates_result.rowcount,
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note="System templates preserved"
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)
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# Step 5: Delete audit logs
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logger.info("notification.tenant_deletion.deleting_audit_logs", tenant_id=tenant_id)
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audit_result = await self.db.execute(
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delete(AuditLog).where(
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AuditLog.tenant_id == UUID(tenant_id)
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)
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)
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result.deleted_counts["audit_logs"] = audit_result.rowcount
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logger.info(
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"notification.tenant_deletion.audit_logs_deleted",
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tenant_id=tenant_id,
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count=audit_result.rowcount
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)
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# Commit the transaction
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await self.db.commit()
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# Calculate total deleted
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total_deleted = sum(result.deleted_counts.values())
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logger.info(
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"notification.tenant_deletion.completed",
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tenant_id=tenant_id,
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total_deleted=total_deleted,
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breakdown=result.deleted_counts,
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note="System templates preserved"
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)
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result.success = True
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except Exception as e:
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await self.db.rollback()
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error_msg = f"Failed to delete notification data for tenant {tenant_id}: {str(e)}"
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logger.error(
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"notification.tenant_deletion.failed",
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tenant_id=tenant_id,
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error=str(e),
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exc_info=True
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)
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result.errors.append(error_msg)
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result.success = False
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return result
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def get_notification_tenant_deletion_service(
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db: AsyncSession
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) -> NotificationTenantDeletionService:
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"""
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Factory function to create NotificationTenantDeletionService instance
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Args:
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db: AsyncSession database session
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Returns:
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NotificationTenantDeletionService instance
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"""
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return NotificationTenantDeletionService(db)
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