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https://github.com/pacnpal/thrillwiki_django_no_react.git
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Add comprehensive tests for Parks API and models
- Implemented extensive test cases for the Parks API, covering endpoints for listing, retrieving, creating, updating, and deleting parks. - Added tests for filtering, searching, and ordering parks in the API. - Created tests for error handling in the API, including malformed JSON and unsupported methods. - Developed model tests for Park, ParkArea, Company, and ParkReview models, ensuring validation and constraints are enforced. - Introduced utility mixins for API and model testing to streamline assertions and enhance test readability. - Included integration tests to validate complete workflows involving park creation, retrieval, updating, and deletion.
This commit is contained in:
pacnpal
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core/health_checks/__init__.py
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core/health_checks/__init__.py
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# Health checks module
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core/health_checks/custom_checks.py
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core/health_checks/custom_checks.py
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"""
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Custom health checks for ThrillWiki application.
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"""
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import time
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import logging
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from django.core.cache import cache
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from django.db import connection
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from health_check.backends import BaseHealthCheckBackend
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from health_check.exceptions import ServiceUnavailable, ServiceReturnedUnexpectedResult
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logger = logging.getLogger(__name__)
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class CacheHealthCheck(BaseHealthCheckBackend):
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"""Check Redis cache connectivity and performance"""
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critical_service = True
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def check_status(self):
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try:
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# Test cache write/read performance
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test_key = 'health_check_test'
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test_value = 'test_value_' + str(int(time.time()))
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start_time = time.time()
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cache.set(test_key, test_value, timeout=30)
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cached_value = cache.get(test_key)
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cache_time = time.time() - start_time
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if cached_value != test_value:
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self.add_error("Cache read/write test failed - values don't match")
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return
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# Check cache performance
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if cache_time > 0.1: # Warn if cache operations take more than 100ms
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self.add_error(f"Cache performance degraded: {cache_time:.3f}s for read/write operation")
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return
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# Clean up test key
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cache.delete(test_key)
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# Additional Redis-specific checks if using django-redis
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try:
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from django_redis import get_redis_connection
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redis_client = get_redis_connection("default")
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info = redis_client.info()
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# Check memory usage
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used_memory = info.get('used_memory', 0)
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max_memory = info.get('maxmemory', 0)
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if max_memory > 0:
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memory_usage_percent = (used_memory / max_memory) * 100
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if memory_usage_percent > 90:
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self.add_error(f"Redis memory usage critical: {memory_usage_percent:.1f}%")
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elif memory_usage_percent > 80:
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logger.warning(f"Redis memory usage high: {memory_usage_percent:.1f}%")
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except ImportError:
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# django-redis not available, skip additional checks
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pass
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except Exception as e:
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logger.warning(f"Could not get Redis info: {e}")
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except Exception as e:
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self.add_error(f"Cache service unavailable: {e}")
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class DatabasePerformanceCheck(BaseHealthCheckBackend):
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"""Check database performance and connectivity"""
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critical_service = False
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def check_status(self):
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try:
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start_time = time.time()
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# Test basic connectivity
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with connection.cursor() as cursor:
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cursor.execute("SELECT 1")
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result = cursor.fetchone()
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if result[0] != 1:
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self.add_error("Database connectivity test failed")
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return
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basic_query_time = time.time() - start_time
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# Test a more complex query (if it takes too long, there might be performance issues)
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start_time = time.time()
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with connection.cursor() as cursor:
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cursor.execute("SELECT COUNT(*) FROM django_content_type")
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cursor.fetchone()
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complex_query_time = time.time() - start_time
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# Performance thresholds
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if basic_query_time > 1.0:
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self.add_error(f"Database responding slowly: basic query took {basic_query_time:.2f}s")
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elif basic_query_time > 0.5:
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logger.warning(f"Database performance degraded: basic query took {basic_query_time:.2f}s")
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if complex_query_time > 2.0:
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self.add_error(f"Database performance critical: complex query took {complex_query_time:.2f}s")
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elif complex_query_time > 1.0:
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logger.warning(f"Database performance slow: complex query took {complex_query_time:.2f}s")
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# Check database version and settings if possible
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try:
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with connection.cursor() as cursor:
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cursor.execute("SELECT version()")
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version = cursor.fetchone()[0]
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logger.debug(f"Database version: {version}")
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except Exception as e:
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logger.debug(f"Could not get database version: {e}")
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except Exception as e:
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self.add_error(f"Database performance check failed: {e}")
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class ApplicationHealthCheck(BaseHealthCheckBackend):
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"""Check application-specific health indicators"""
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critical_service = False
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def check_status(self):
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try:
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# Check if we can import critical modules
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critical_modules = [
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'parks.models',
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'rides.models',
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'accounts.models',
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'core.services',
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]
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for module_name in critical_modules:
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try:
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__import__(module_name)
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except ImportError as e:
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self.add_error(f"Critical module import failed: {module_name} - {e}")
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# Check if we can access critical models
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try:
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from parks.models import Park
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from rides.models import Ride
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from django.contrib.auth import get_user_model
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User = get_user_model()
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# Test that we can query these models (just count, don't load data)
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park_count = Park.objects.count()
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ride_count = Ride.objects.count()
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user_count = User.objects.count()
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logger.debug(f"Model counts - Parks: {park_count}, Rides: {ride_count}, Users: {user_count}")
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except Exception as e:
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self.add_error(f"Model access check failed: {e}")
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# Check media and static file configuration
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from django.conf import settings
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import os
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if not os.path.exists(settings.MEDIA_ROOT):
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self.add_error(f"Media directory does not exist: {settings.MEDIA_ROOT}")
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if not os.path.exists(settings.STATIC_ROOT) and not settings.DEBUG:
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self.add_error(f"Static directory does not exist: {settings.STATIC_ROOT}")
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except Exception as e:
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self.add_error(f"Application health check failed: {e}")
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class ExternalServiceHealthCheck(BaseHealthCheckBackend):
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"""Check external services and dependencies"""
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critical_service = False
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def check_status(self):
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# Check email service if configured
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try:
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from django.core.mail import get_connection
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from django.conf import settings
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if hasattr(settings, 'EMAIL_BACKEND') and 'console' not in settings.EMAIL_BACKEND:
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# Only check if not using console backend
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connection = get_connection()
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if hasattr(connection, 'open'):
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try:
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connection.open()
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connection.close()
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except Exception as e:
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logger.warning(f"Email service check failed: {e}")
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# Don't fail the health check for email issues in development
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except Exception as e:
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logger.debug(f"Email service check error: {e}")
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# Check if Sentry is configured and working
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try:
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import sentry_sdk
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if sentry_sdk.Hub.current.client:
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# Sentry is configured
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try:
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# Test that we can capture a test message (this won't actually send to Sentry)
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with sentry_sdk.push_scope() as scope:
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scope.set_tag("health_check", True)
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# Don't actually send a message, just verify the SDK is working
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logger.debug("Sentry SDK is operational")
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except Exception as e:
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logger.warning(f"Sentry SDK check failed: {e}")
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except ImportError:
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logger.debug("Sentry SDK not installed")
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except Exception as e:
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logger.debug(f"Sentry check error: {e}")
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# Check Redis connection if configured
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try:
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from django.core.cache import caches
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from django.conf import settings
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cache_config = settings.CACHES.get('default', {})
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if 'redis' in cache_config.get('BACKEND', '').lower():
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# Redis is configured, test basic connectivity
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redis_cache = caches['default']
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redis_cache.set('health_check_redis', 'test', 10)
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value = redis_cache.get('health_check_redis')
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if value != 'test':
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self.add_error("Redis cache connectivity test failed")
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else:
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redis_cache.delete('health_check_redis')
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except Exception as e:
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logger.warning(f"Redis connectivity check failed: {e}")
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class DiskSpaceHealthCheck(BaseHealthCheckBackend):
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"""Check available disk space"""
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critical_service = False
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def check_status(self):
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try:
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import shutil
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from django.conf import settings
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# Check disk space for media directory
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media_usage = shutil.disk_usage(settings.MEDIA_ROOT)
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media_free_percent = (media_usage.free / media_usage.total) * 100
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# Check disk space for logs directory if it exists
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logs_dir = getattr(settings, 'BASE_DIR', '/tmp') / 'logs'
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if logs_dir.exists():
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logs_usage = shutil.disk_usage(logs_dir)
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logs_free_percent = (logs_usage.free / logs_usage.total) * 100
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else:
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logs_free_percent = media_free_percent # Use same as media
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# Alert thresholds
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if media_free_percent < 10:
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self.add_error(f"Critical disk space: {media_free_percent:.1f}% free in media directory")
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elif media_free_percent < 20:
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logger.warning(f"Low disk space: {media_free_percent:.1f}% free in media directory")
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if logs_free_percent < 10:
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self.add_error(f"Critical disk space: {logs_free_percent:.1f}% free in logs directory")
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elif logs_free_percent < 20:
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logger.warning(f"Low disk space: {logs_free_percent:.1f}% free in logs directory")
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except Exception as e:
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logger.warning(f"Disk space check failed: {e}")
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# Don't fail health check for disk space issues in development
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