本文整理汇总了Python中django.db.utils.InterfaceError方法的典型用法代码示例。如果您正苦于以下问题:Python utils.InterfaceError方法的具体用法?Python utils.InterfaceError怎么用?Python utils.InterfaceError使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类django.db.utils
的用法示例。
在下文中一共展示了utils.InterfaceError方法的6个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: render_path
# 需要导入模块: from django.db import utils [as 别名]
# 或者: from django.db.utils import InterfaceError [as 别名]
def render_path(self, *args, **kwargs):
# Retry after an InterfaceError
max_attempts = 5
for i in range(max_attempts):
try:
return super().render_path(*args, **kwargs)
except InterfaceError as e:
self.logger.warning("Caught InterfaceError, closing connection "
"and trying again (attempt #%s)",
i, exc_info=True)
try:
connection.close()
except:
pass
self.logger.error("Failed to render page after %s attempts. "
"Re-raising last exception...", max_attempts)
raise e
示例2: task_completed
# 需要导入模块: from django.db import utils [as 别名]
# 或者: from django.db.utils import InterfaceError [as 别名]
def task_completed(sender=None, **kwargs):
task_kwargs = kwargs.get('kwargs')
job_id = task_kwargs.get('wooey_job')
# Just return if it is not a wooey_job!
if not job_id:
return
from .models import WooeyJob
from celery import states
try:
job = WooeyJob.objects.get(pk=job_id)
except (InterfaceError, DatabaseError) as e:
db.connection.close()
job = WooeyJob.objects.get(pk=job_id)
state = kwargs.get('state')
if state:
job.status = WooeyJob.COMPLETED if state == states.SUCCESS else state
job.celery_id = kwargs.get('task_id')
job.save()
示例3: process_exception
# 需要导入模块: from django.db import utils [as 别名]
# 或者: from django.db.utils import InterfaceError [as 别名]
def process_exception(self, request, exception):
"""Raise 424 on InterfaceError."""
if isinstance(exception, InterfaceError):
DB_CONNECTION_ERRORS_COUNTER.inc()
LOG.error("KokuTenantMiddleware InterfaceError exception: %s", exception)
return HttpResponseFailedDependency({"source": "Database", "exception": exception})
示例4: run
# 需要导入模块: from django.db import utils [as 别名]
# 或者: from django.db.utils import InterfaceError [as 别名]
def run(self):
"""The main run loop of the thread
"""
logger.info('%s thread started', self._name)
while self._running:
started = now()
try:
self._execute()
except InterfaceError as err:
logger.exception('%s thread had a critical error interfacing with the database', self._name)
if err.message == 'connection already closed':
msg = '%s thread has detected that the database connection is closed and cannot be recovered.'
msg += ' Shutting down the scheduler...'
logger.error(msg, self._name)
from scheduler.management.commands.scale_scheduler import GLOBAL_SHUTDOWN
GLOBAL_SHUTDOWN()
except Exception:
logger.exception('%s thread had a critical error', self._name)
duration = now() - started
msg = '%s thread loop took %.3f seconds'
if duration > self._warning_threshold:
logger.warning(msg, self._name, duration.total_seconds())
else:
logger.debug(msg, self._name, duration.total_seconds())
# If time takes less than threshold, throttle
if duration < self._throttle:
# Delay until full throttle time reached
delay = math.ceil(self._throttle.total_seconds() - duration.total_seconds())
time.sleep(delay)
logger.info('%s thread stopped', self._name)
示例5: task_completed
# 需要导入模块: from django.db import utils [as 别名]
# 或者: from django.db.utils import InterfaceError [as 别名]
def task_completed(sender=None, **kwargs):
task_kwargs = kwargs.get('kwargs')
job_id = task_kwargs.get('djangui_job')
from .models import DjanguiJob
from celery import states
try:
job = DjanguiJob.objects.get(pk=job_id)
except (InterfaceError, DatabaseError) as e:
db.connection.close()
job = DjanguiJob.objects.get(pk=job_id)
state = kwargs.get('state')
if state:
job.status = DjanguiJob.COMPLETED if state == states.SUCCESS else state
job.celery_id = kwargs.get('task_id')
job.save()
示例6: transaction_retry
# 需要导入模块: from django.db import utils [as 别名]
# 或者: from django.db.utils import InterfaceError [as 别名]
def transaction_retry(max_retries=1):
"""Decorator to retry database operations.
For functions doing database operations, adding
retrying if the operation fails.
Keyword Arguments:
max_retries (int): Maximum number of retries. Default one retry.
"""
def _outer(fun):
@wraps(fun)
def _inner(*args, **kwargs):
_max_retries = kwargs.pop('exception_retry_count', max_retries)
for retries in count(0):
try:
return fun(*args, **kwargs)
except SchedulingError as e:
log_task_failure(e, *args, **kwargs)
TaskUtils.prepare_task_execution()
if retries >= _max_retries:
raise
except InterfaceError as e:
log_task_failure(e, *args, **kwargs)
TaskUtils.prepare_task_execution()
if retries >= _max_retries:
raise
except OperationalError as e:
log_task_failure(e, *args, **kwargs)
TaskUtils.prepare_task_execution()
if retries >= _max_retries:
raise
except Exception as e: # pragma: no cover
# Depending on the database backend used we can experience
# various exceptions. E.g. psycopg2 raises an exception
# if some operation breaks the transaction, so saving
# the task result won't be possible until we rollback
# the transaction.
log_task_failure(e, *args, **kwargs)
if retries >= _max_retries:
raise
return _inner
return _outer