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import time
from pymongo.errors import PyMongoError, ConnectionFailure, OperationFailure, ExecutionTimeout
# TODO(DRIVERS-1401): Use error labels instead of checking against an allow list of error codes.
retryable_codes = [
# From the SDAM spec, the "node is shutting down" codes.
11600, # InterruptedAtShutdown
91, # ShutdownInProgress
# From the SDAM spec, the "not primary" and "node is recovering" error codes.
10058, # LegacyNotPrimary <=3.2 "not primary" error code
10107, # NotWritablePrimary
13435, # NotPrimaryNoSecondaryOk
11602, # InterruptedDueToReplStateChange
13436, # NotPrimaryOrSecondary
189, # PrimarySteppedDown
# From the retryable reads/writes spec.
7, # HostNotFound
6, # HostUnreachable
89, # NetworkTimeout
9001, # SocketException
262, # ExceededTimeLimit
]
def is_retryable_error(exc, retryable_error_codes):
if isinstance(exc, ConnectionFailure):
return True
if exc.has_error_label("RetryableWriteError"):
return True
if isinstance(exc, OperationFailure) and exc.code in retryable_error_codes:
return True
return False
def with_naive_retry(func, timeout=100, extra_retryable_error_codes=None):
"""
Retry execution of a provided function naively for up to `timeout` seconds.
This method is only suitable for reads or other idempotent operations. It is not suitable for
retrying non-idempotent operations (most writes).
:param func: The function to execute
:param timeout: The maximum amount of time to retry execution
:param extra_retryable_error_codes: List of additional error codes that should be considered retryable
"""
retryable_error_codes = set(retryable_codes)
if extra_retryable_error_codes:
retryable_error_codes.update(extra_retryable_error_codes)
last_exc = None
start = time.monotonic()
while time.monotonic() - start < timeout:
try:
return func()
except PyMongoError as exc:
last_exc = exc
if not is_retryable_error(exc, retryable_error_codes):
raise
time.sleep(0.1)
raise ExecutionTimeout(
f"Operation exceeded time limit after {timeout} seconds, last error: {last_exc}")
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