def test_custom_health_overridden_identifier_check_not_failing(self):
plugin_dir.register(self.ServiceUpOverriddenIdentifierCustomHealthCheck)
result = self.client.get('{}?format=json&checks=test_check'.format(self.url))
self.assertEqual(result.status_code, 200)
self.assertEqual(result.json(), {'test_check': 'working'})
def test_custom_health_check_failing(self):
plugin_dir.register(self.ServiceDownCustomHealthCheck)
result = self.client.get('{}?format=json&checks=ServiceDownCustomHealthCheck'.format(self.url))
self.assertEqual(result.status_code, 500)
self.assertEqual(result.json(), {'ServiceDownCustomHealthCheck': 'unavailable: Testing service not working'})
def ready(self):
from health_check.db.backends import DatabaseBackend
from health_check.cache.backends import CacheBackend
from health_check.contrib.celery.backends import CeleryHealthCheck
from health_check.contrib.s3boto_storage.backends import S3BotoStorageHealthCheck
from health_check.contrib.twilio.backends import TwilioHealthCheck
plugin_dir.register(type('Database', (DatabaseBackend,),
{
'description': 'The database is critical for a fully operational system'
}))
plugin_dir.register(type('Cache', (CacheBackend,),
{
'description': 'The caching service is critical for a fully operational system'
}))
plugin_dir.register(type('TaskProcessing', (CeleryHealthCheck,),
{
'description': 'Grade calculation, emails, text messages, and other '
'deferred tasks',
'queues': current_app.amqp.queues
}))
plugin_dir.register(type('Twilio', (TwilioHealthCheck,),
{
'critical': False,
'description': 'Reminders and other text message notifications',
'services': ['SMS']
}))
if not settings.SERVE_LOCAL:
plugin_dir.register(type('AWS', (S3BotoStorageHealthCheck,),
{
'critical': False,
'description': 'Attachment and other file storage'
}))
def ready(self):
from .backends import CeleryBeatHealthCheck
cls = getattr(settings, 'HEALTH_CHECK', {}).get('CELERY_APP', None)
if cls is None:
raise ImproperlyConfigured(
"Set HEALTH_CHECK['CELERY_APP'] to point to celery app instance in your settings to use celery "
"beat health-check (example value: 'my_project.celery.app')")
module_name, class_name = cls.rsplit(".", 1)
app_module = importlib.import_module(module_name)
# Set initial timestamp not to fail the health-check before it runs for the first time
# Don't use apply_async - otherwise, the whole initialisation will fail if celery fails
try:
timestamp_task()
getattr(app_module, class_name).add_periodic_task(
TIMEOUT,
timestamp_task.s(),
name='Celery health check beat',
)
except Exception:
# This is likely issue with the cache or with celery broker connection. Handle any exception not to let the
# whole app go down - depending on cache and broker backend, different exceptions can be encountered here
#
# Don't try to recover from this error, health-check will be failing unless the issue is resolved.
#
# Don't log the exception since sometimes it is expected to fail here - i.e. when running some management
# command that does not expect all the infrastructure to work
pass
plugin_dir.register(CeleryBeatHealthCheck)
def ready(self):
from .backends import PhantomJSHealthCheck, PhantomJSWithHeaderHtmlHealthCheck
if hasattr(settings, 'HEALTH_CHECK') and settings.HEALTH_CHECK.get(
'PHANTOMJS_REQUIRES_HEADER_HTML', False):
plugin_dir.register(PhantomJSWithHeaderHtmlHealthCheck)
else:
plugin_dir.register(PhantomJSHealthCheck)
def ready(self):
from .backends import CeleryHealthCheck
for queue in current_app.amqp.queues:
celery_class_name = 'CeleryHealthCheck' + queue.title()
celery_class = type(celery_class_name, (CeleryHealthCheck,), {'queue': queue})
plugin_dir.register(celery_class)
def test_success_unsupported_accept(self, client):
class SuccessBackend(BaseHealthCheckBackend):
def run_check(self):
pass
plugin_dir.reset()
plugin_dir.register(SuccessBackend)
response = client.get(self.url, HTTP_ACCEPT='application/octet-stream')
assert response['content-type'] == 'text/html; charset=utf-8'
def test_success_accept_order__reverse(self, client):
class JSONSuccessBackend(BaseHealthCheckBackend):
def run_check(self):
pass
plugin_dir.reset()
plugin_dir.register(JSONSuccessBackend)
response = client.get(self.url, HTTP_ACCEPT='text/html; q=0.1, application/xhtml+xml; q=0.1, application/json')
assert response['content-type'] == 'application/json'
def test_format_override(self, client):
class JSONSuccessBackend(BaseHealthCheckBackend):
def run_check(self):
pass
plugin_dir.reset()
plugin_dir.register(JSONSuccessBackend)
response = client.get(self.url + '?format=json', HTTP_ACCEPT='text/html')
assert response['content-type'] == 'application/json'
def ready(self):
if (hasattr(settings, "HEALTH_CHECK")
and ("EMAIL_ENABLED" in settings.HEALTH_CHECK)
and not settings.HEALTH_CHECK["EMAIL_ENABLED"]):
pass
else:
from .backends import EmailBackend
plugin_dir.register(EmailBackend)
def ready(self):
from .backends import CeleryHealthCheck
for queue in current_app.amqp.queues:
celery_class_name = 'CeleryHealthCheck' + queue.title()
celery_class = type(celery_class_name, (CeleryHealthCheck, ),
{'queue': queue})
plugin_dir.register(celery_class)
def test_custom_health_overridden_identifier_check_not_failing(self):
plugin_dir.register(
self.ServiceUpOverriddenIdentifierCustomHealthCheck)
result = self.client.get('{}?format=json&checks=test_check'.format(
self.url))
self.assertEqual(result.status_code, 200)
self.assertEqual(result.json(), {'test_check': 'working'})
def test_format_no_accept_header(self, client):
class JSONSuccessBackend(BaseHealthCheckBackend):
def run_check(self):
pass
plugin_dir.reset()
plugin_dir.register(JSONSuccessBackend)
response = client.get(self.url)
assert response.status_code == 200, response.content.decode('utf-8')
assert response['content-type'] == 'text/html; charset=utf-8'
def test_success_accept_json(self, api_client):
class JSONSuccessBackend(BaseHealthCheckBackend):
def run_check(self):
pass
plugin_dir.reset()
plugin_dir.register(JSONSuccessBackend)
response = api_client.get(self.url, HTTP_ACCEPT='application/json')
assert response['content-type'] == 'application/json'
assert response.status_code == 200
def test_format_no_accept_header(self, api_client):
class JSONSuccessBackend(BaseHealthCheckBackend):
def run_check(self):
pass
plugin_dir.reset()
plugin_dir.register(JSONSuccessBackend)
response = api_client.get(self.url)
assert response.status_code == 200, response.content.decode('utf-8')
assert response['content-type'] == 'text/html; charset=utf-8'
def test_error(self, client):
class MyBackend(BaseHealthCheckBackend):
def run_check(self):
self.add_error('Super Fail!')
plugin_dir.reset()
plugin_dir.register(MyBackend)
response = client.get(self.url)
assert response.status_code == 503, response.content.decode('utf-8')
assert b'Super Fail!' in response.content
def test_success_accept_xhtml(self, client):
class SuccessBackend(BaseHealthCheckBackend):
def run_check(self):
pass
plugin_dir.reset()
plugin_dir.register(SuccessBackend)
response = client.get(self.url, HTTP_ACCEPT='application/xhtml+xml')
assert response['content-type'] == 'text/html; charset=utf-8'
assert response.status_code == 200
def test_error_json(self, client):
class JSONErrorBackend(BaseHealthCheckBackend):
def run_check(self):
self.add_error('JSON Error')
plugin_dir.reset()
plugin_dir.register(JSONErrorBackend)
response = client.get(self.url, HTTP_ACCEPT='application/json')
assert response.status_code == 500, response.content.decode('utf-8')
assert 'JSON Error' in json.loads(response.content.decode('utf-8'))[JSONErrorBackend().identifier()]
def test_success_json(self, client):
class JSONSuccessBackend(BaseHealthCheckBackend):
def run_check(self):
pass
plugin_dir.reset()
plugin_dir.register(JSONSuccessBackend)
response = client.get(self.url, HTTP_ACCEPT='application/json')
assert response.status_code == 200, response.content.decode('utf-8')
assert json.loads(response.content.decode('utf-8')) == \
{JSONSuccessBackend().identifier(): JSONSuccessBackend().pretty_status()}
def test_success_unsupported_accept(self, client):
class SuccessBackend(BaseHealthCheckBackend):
def run_check(self):
pass
plugin_dir.reset()
plugin_dir.register(SuccessBackend)
response = client.get(self.url, HTTP_ACCEPT='application/octet-stream')
assert response['content-type'] == 'text/plain'
assert response.status_code == 406
assert response.content == b'Not Acceptable: Supported content types: text/html, application/json'
def test_error_param_json(self, client):
class JSONErrorBackend(BaseHealthCheckBackend):
def run_check(self):
self.add_error('JSON Error')
plugin_dir.reset()
plugin_dir.register(JSONErrorBackend)
response = client.get(self.url, {'format': 'json'})
assert response.status_code == 500, response.content.decode('utf-8')
assert response['content-type'] == 'application/json'
assert 'JSON Error' in json.loads(response.content.decode('utf-8'))[JSONErrorBackend().identifier()]
def test_error(self, api_client):
class MyBackend(BaseHealthCheckBackend):
def check_status(self):
self.add_error('Super Fail!')
plugin_dir.reset()
plugin_dir.register(MyBackend)
response = api_client.get(self.url)
assert response.status_code == 500, response.content.decode('utf-8')
assert response['content-type'] == 'text/html; charset=utf-8'
assert b'Super Fail!' in response.content
def test_error(self, client):
class MyBackend(BaseHealthCheckBackend):
def check_status(self):
self.add_error('Super Fail!')
plugin_dir.reset()
plugin_dir.register(MyBackend)
response = client.get(self.url)
assert response.status_code == 500, response.content.decode('utf-8')
assert response['content-type'] == 'text/html; charset=utf-8'
assert b'Super Fail!' in response.content
def ready(self):
from .backends import CeleryHealthCheck
if hasattr(settings, "HEALTHCHECK_CELERY_TIMEOUT"):
warnings.warn("HEALTHCHECK_CELERY_TIMEOUT is depricated and may be removed in the "
"future. Please use HEALTHCHECK_CELERY_RESULT_TIMEOUT and "
"HEALTHCHECK_CELERY_QUEUE_TIMEOUT instead.", DeprecationWarning)
for queue in current_app.amqp.queues:
celery_class_name = 'CeleryHealthCheck' + queue.title()
celery_class = type(celery_class_name, (CeleryHealthCheck,), {'queue': queue})
plugin_dir.register(celery_class)
def test_success_unsupported_and_supported_accept(self, api_client):
class SuccessBackend(BaseHealthCheckBackend):
def run_check(self):
pass
plugin_dir.reset()
plugin_dir.register(SuccessBackend)
response = api_client.get(
self.url,
HTTP_ACCEPT='application/octet-stream, application/json; q=0.9')
assert response['content-type'] == 'application/json'
assert response.status_code == 200
def test_error_param_json(self, api_client):
class JSONErrorBackend(BaseHealthCheckBackend):
def run_check(self):
self.add_error('JSON Error')
plugin_dir.reset()
plugin_dir.register(JSONErrorBackend)
response = api_client.get(self.url, {'format': 'json'})
assert response.status_code == 500, response.content.decode('utf-8')
assert response['content-type'] == 'application/json'
assert 'JSON Error' in json.loads(
response.content.decode('utf-8'))["data"][0]["status"]
def test_success_param_json(self, client):
class JSONSuccessBackend(BaseHealthCheckBackend):
def run_check(self):
pass
plugin_dir.reset()
plugin_dir.register(JSONSuccessBackend)
response = client.get(self.url, {'format': 'json'})
assert response.status_code == 200, response.content.decode('utf-8')
assert response['content-type'] == 'application/json'
assert json.loads(response.content.decode('utf-8')) == \
{JSONSuccessBackend().identifier(): JSONSuccessBackend().pretty_status()}
def test_non_critical(self, client):
class MyBackend(BaseHealthCheckBackend):
critical_service = False
def check_status(self):
self.add_error('Super Fail!')
plugin_dir.reset()
plugin_dir.register(MyBackend)
response = client.get(self.url)
assert response.status_code == 200, response.content.decode('utf-8')
assert b'Super Fail!' in response.content
def test_custom_health_check_failing(self):
plugin_dir.register(self.ServiceDownCustomHealthCheck)
result = self.client.get(
'{}?format=json&checks=ServiceDownCustomHealthCheck'.format(
self.url))
self.assertEqual(result.status_code, 500)
self.assertEqual(
result.json(), {
'ServiceDownCustomHealthCheck':
'unavailable: Testing service not working'
})
def ready(self):
# noinspection PyUnresolvedReferences
import common.signals
if (
"health_check" in settings.INSTALLED_APPS
and "django_auth_ldap.backend.LDAPBackend"
in settings.AUTHENTICATION_BACKENDS
): # pragma: no cover
from common.health_checks import LdapHealthCheck
from health_check.plugins import plugin_dir
plugin_dir.register(LdapHealthCheck)
def ready(self):
from .backends import DiskUsage, MemoryUsage
# Ensure checks haven't been explicitly disabled before registering
if (hasattr(settings, 'HEALTH_CHECK')
and ('DISK_USAGE_MAX' in settings.HEALTH_CHECK)
and (settings.HEALTH_CHECK['DISK_USAGE_MAX'] is None)):
pass
else:
plugin_dir.register(DiskUsage)
if (not hasattr(settings, 'HEALTH_CHECK')
or 'DISK_USAGE_MAX' not in settings.HEALTH_CHECK
or settings.HEALTH_CHECK['MEMORY_MIN'] is not None):
plugin_dir.register(MemoryUsage)
def test_success_accept_order(self, api_client):
class JSONSuccessBackend(BaseHealthCheckBackend):
def run_check(self):
pass
plugin_dir.reset()
plugin_dir.register(JSONSuccessBackend)
response = api_client.get(
self.url,
HTTP_ACCEPT=
'text/html, application/xhtml+xml, application/json; q=0.9, */*; q=0.1'
)
assert response['content-type'] == 'text/html; charset=utf-8'
assert response.status_code == 200
def ready(self):
super().ready()
from django.conf import settings # noqa
# Autodiscover various modules defined by AlekSIS
autodiscover_modules("form_extensions", "model_extensions", "checks")
sitepreferencemodel = self.get_model("SitePreferenceModel")
personpreferencemodel = self.get_model("PersonPreferenceModel")
grouppreferencemodel = self.get_model("GroupPreferenceModel")
preference_models.register(sitepreferencemodel,
site_preferences_registry)
preference_models.register(personpreferencemodel,
person_preferences_registry)
preference_models.register(grouppreferencemodel,
group_preferences_registry)
self._load_data_checks()
from .health_checks import (
BackupJobHealthCheck,
DataChecksHealthCheckBackend,
DbBackupAgeHealthCheck,
MediaBackupAgeHealthCheck,
)
plugin_dir.register(DataChecksHealthCheckBackend)
plugin_dir.register(DbBackupAgeHealthCheck)
plugin_dir.register(MediaBackupAgeHealthCheck)
plugin_dir.register(BackupJobHealthCheck)
def ready(self):
from .backends import DiskUsage, MemoryUsage
# Ensure checks haven't been explicitly disabled before registering
if (hasattr(settings, 'HEALTH_CHECK') and
('DISK_USAGE_MAX' in settings.HEALTH_CHECK) and
(settings.HEALTH_CHECK['DISK_USAGE_MAX'] is None)):
pass
else:
plugin_dir.register(DiskUsage)
if (hasattr(settings, 'HEALTH_CHECK') and
('DISK_USAGE_MAX' in settings.HEALTH_CHECK) and
(settings.HEALTH_CHECK['MEMORY_MIN'] is None)):
pass
else:
plugin_dir.register(MemoryUsage)
def test_warning(self, client):
class MyBackend(BaseHealthCheckBackend):
def check_status(self):
raise ServiceWarning('so so')
plugin_dir.reset()
plugin_dir.register(MyBackend)
response = client.get(self.url)
assert response.status_code == 500, response.content.decode('utf-8')
assert b'so so' in response.content, response.content
HEALTH_CHECK['WARNINGS_AS_ERRORS'] = False
response = client.get(self.url)
assert response.status_code == 200, response.content.decode('utf-8')
assert b'so so' in response.content, response.content
def ready(self):
from .backends import CeleryHealthCheck
# To check if we want to check just for default celery queue which is
# 'celery', you don't need to define anything, else
# CELERY_QUEUES = [queues used in your project]
queues = getattr(settings, 'CELERY_QUEUES', [])
if not queues:
queues = [queue for queue in current_app.amqp.queues]
for queue in queues:
celery_class_name = 'CeleryHealthCheck - ' + queue.title()
celery_class = type(celery_class_name, (CeleryHealthCheck,), {'queue': queue})
plugin_dir.register(celery_class)
def test_success_param_json(self, api_client):
class JSONSuccessBackend(BaseHealthCheckBackend):
def run_check(self):
pass
plugin_dir.reset()
plugin_dir.register(JSONSuccessBackend)
response = api_client.get(self.url, {'format': 'json'})
assert response.status_code == 200, response.content.decode('utf-8')
assert response['content-type'] == 'application/json'
assert json.loads(response.content.decode('utf-8')) == {
"data": [{
"name": JSONSuccessBackend().identifier(),
"status": JSONSuccessBackend().pretty_status(),
"time_taken": None
}]
}
def test_warning(self, client):
class MyBackend(BaseHealthCheckBackend):
def check_status(self):
raise ServiceWarning('so so')
plugin_dir.reset()
plugin_dir.register(MyBackend)
response = client.get(self.url)
assert response.status_code == 500, response.content.decode('utf-8')
assert b'so so' in response.content, response.content
HEALTH_CHECK['WARNINGS_AS_ERRORS'] = False
response = client.get(self.url)
assert response.status_code == 200, response.content.decode('utf-8')
assert response['content-type'] == 'text/html; charset=utf-8'
assert b'so so' in response.content, response.content
def ready(self):
super().ready()
import nautobot.extras.signals # noqa
from nautobot.extras.plugins.validators import wrap_model_clean_methods
try:
# Wrap plugin model validator registered clean methods
wrap_model_clean_methods()
except ProgrammingError:
# The ContentType table might not exist yet (if migrations have not been run)
logger.warning(
"Wrapping model clean methods for custom validators failed because "
"the ContentType table was not available or populated. This is normal "
"during the execution of the migration command for the first time."
)
# Register the DatabaseBackend health check
from nautobot.extras.health_checks import DatabaseBackend
plugin_dir.register(DatabaseBackend)
import logging
import sys
import traceback
from geonode.geoserver.helpers import check_geoserver_is_up
from health_check.backends.base import (
BaseHealthCheckBackend, ServiceReturnedUnexpectedResult, ServiceUnavailable
)
from health_check.plugins import plugin_dir
logger = logging.getLogger(__name__)
class GeoServerHealthCheck(BaseHealthCheckBackend):
def check_status(self):
try:
check_geoserver_is_up()
return True
except AssertionError:
logger.exception("Unknown Error")
raise ServiceUnavailable("Unknown error")
plugin_dir.register(GeoServerHealthCheck)
def test_should_raise_exception_when_registry_a_registrated_plugin(self):
with pytest.raises(AlreadyRegistered):
plugin_dir.register(FakePlugin)
assert len(plugin_dir._registry) == 2
#-*- coding: utf-8 -*-
from health_check.plugins import plugin_dir
from health_check_storage.base import StorageHealthCheck
from django.conf import settings
class DefaultFileStorageHealthCheck(StorageHealthCheck):
def description(self):
return "Checks that the default django file storage can be written to and read from."
storage = settings.DEFAULT_FILE_STORAGE
plugin_dir.register(DefaultFileStorageHealthCheck)
from health_check.plugins import plugin_dir
from health_check.backends.base import BaseHealthCheckBackend, ServiceUnavailable
from health_check_celery.tasks import add
from datetime import datetime, timedelta
from time import sleep
class CeleryHealthCheck(BaseHealthCheckBackend):
def check_status(self):
try:
result = add.apply_async(args=[4, 4], expires=datetime.now() + timedelta(seconds=3), connect_timeout=3)
now = datetime.now()
while (now + timedelta(seconds=3)) > datetime.now():
if result.result == 8:
return True
sleep(0.5)
except IOError:
pass
raise ServiceUnavailable("Unknown error")
plugin_dir.register(CeleryHealthCheck)
try:
expected = 'itworks'
cache.set('djangohealtcheck_test', expected, 1)
got = cache.get("djangohealtcheck_test")
if got == expected:
return True
else:
raise ServiceUnavailable("Cache key does not match. Got %s, expected %s" % (got, expected))
except CacheKeyWarning as e:
raise ServiceReturnedUnexpectedResult("Cache key warning: %s" % e)
except ValueError as e:
raise ServiceReturnedUnexpectedResult("ValueError: %s" % e)
except Exception as e:
raise ServiceUnavailable("Unknown cache exception: %s" % e)
plugin_dir.register(CacheBackendCheck)
class CeleryHealthCheck(BaseHealthCheckBackend):
def check_status(self):
try:
result = add.apply_async(args=[4, 4], expires=datetime.now() + timedelta(seconds=3), connect_timeout=3)
now = datetime.now()
while (now + timedelta(seconds=3)) > datetime.now():
if result.result == 8:
return True
sleep(0.5)
except IOError:
pass
raise ServiceUnavailable("Celery task took > 3 seconds to complete.")
def check_status(self):
try:
cache.set("djangohealtcheck_test", "itworks", 1)
if cache.get("djangohealtcheck_test") == "itworks":
return True
else:
raise ServiceUnavailable("Cache key does not match")
except CacheKeyWarning:
raise ServiceReturnedUnexpectedResult("Cache key warning")
except ValueError:
raise ServiceReturnedUnexpectedResult("ValueError")
except Exception:
raise ServiceUnavailable("Unknown exception")
plugin_dir.register(CacheBackend)
########NEW FILE########
__FILENAME__ = models
########NEW FILE########
__FILENAME__ = plugin_health_check
from health_check.plugins import plugin_dir
from health_check.backends.base import BaseHealthCheckBackend, ServiceUnavailable
from health_check_celery.tasks import add
from datetime import datetime, timedelta
from time import sleep
class CeleryHealthCheck(BaseHealthCheckBackend):
def check_status(self):
try:
def ready(self):
from .backends import CacheBackend
plugin_dir.register(CacheBackend)
def setup(self):
plugin_dir.register(FakePlugin)
@staticmethod
def get_disk_space_status(total=None, used=None, free=None):
if None in [total, used, free]:
total, used, free = shutil.disk_usage('/')
percentage_free = ((free / total) * 100)
if not percentage_free > 10.0:
raise ServiceUnavailable("Only {} % free space available".format(percentage_free))
if not percentage_free > 30.0:
raise ServiceReturnedUnexpectedResult("Only {} % free space available".format(percentage_free))
return True
def check_status(self):
return self.get_disk_space_status()
plugin_dir.register(DiskSpaceHealth)
class ElasticSearchHealth(BaseHealthCheckBackend):
def check_status(self):
urls = settings.ES_URLS
try:
from search import get_es_client
es = get_es_client()
return es.indices.exists(settings.SITE_NAME)
except Exception as e:
raise ServiceUnavailable("Connection Error")
plugin_dir.register(ElasticSearchHealth)
def test_already_registered_exception(self):
with pytest.raises(AlreadyRegistered):
plugin_dir.register(FakePlugin)
assert len(plugin_dir._registry) == 1
def ready(self):
from .backends import S3BotoStorageHealthCheck
plugin_dir.register(S3BotoStorageHealthCheck)
from django.core.cache.backends.base import CacheKeyWarning
from health_check.backends.base import BaseHealthCheckBackend, ServiceUnavailable, ServiceReturnedUnexpectedResult
from health_check.plugins import plugin_dir
from django.core.cache import cache
class CacheBackend(BaseHealthCheckBackend):
def check_status(self):
try:
cache.set('djangohealtcheck_test', 'itworks', 1)
if cache.get("djangohealtcheck_test") == "itworks":
return True
else:
raise ServiceUnavailable("Cache key does not match")
except CacheKeyWarning:
raise ServiceReturnedUnexpectedResult("Cache key warning")
except ValueError:
raise ServiceReturnedUnexpectedResult("ValueError")
except Exception:
raise ServiceUnavailable("Unknown exception")
plugin_dir.register(CacheBackend)
def ready(self):
from .backends import DatabaseBackend
plugin_dir.register(DatabaseBackend)
def setup(self):
plugin_dir.reset()
plugin_dir.register(FakePlugin)
yield
plugin_dir.reset()
def ready(self):
from .backends import RabbitMQHealthCheck
plugin_dir.register(RabbitMQHealthCheck)
from health_check.backends.base import BaseHealthCheckBackend, ServiceUnavailable, ServiceReturnedUnexpectedResult
from health_check.models import TestModel
from django.db import DatabaseError, IntegrityError
from health_check.plugins import plugin_dir
class DjangoDatabaseBackend(BaseHealthCheckBackend):
def check_status(self):
try:
obj = TestModel.objects.create(title="test")
obj.title = "newtest"
obj.save()
obj.delete()
return True
except IntegrityError:
raise ServiceReturnedUnexpectedResult("Integrity Error")
except DatabaseError:
raise ServiceUnavailable("Database error")
plugin_dir.register(DjangoDatabaseBackend)
def ready(self):
# This really is a backend thing, but as we bundle backend with the project dir can only be done here
plugin_dir.register(RQWorkerHealthCheck)
plugin_dir.register(RQSchedulerHealthCheck)
def inner(func):
cls = type(func.__name__, (BaseHealthCheck,), {'_wrapped': staticmethod(func)})
cls.identifier = name
plugin_dir.register(cls)
return func