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from django.conf import settings
from django.core.exceptions import ImproperlyConfigured
try:
import psycopg.errors as psycopg_errors
except ImportError:
import psycopg2.errors as psycopg_errors
except Exception as exc: # pragma: no cover
raise ImproperlyConfigured("Error loading psycopg2 or psycopg module") from exc
def retry_exceptions():
"""The default errors caught when retrying.
Note that these must be psycopg errors.
"""
return getattr(
settings,
"PGTRANSACTION_RETRY_EXCEPTIONS",
(psycopg_errors.SerializationFailure, psycopg_errors.DeadlockDetected),
)
def retry():
"""The default retry amount"""
return getattr(settings, "PGTRANSACTION_RETRY", 0)
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