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# The MIT License (MIT)
# Copyright (c) Microsoft Corporation. All rights reserved.
import unittest
import uuid
import pytest
import azure.cosmos._retry_options as retry_options
import azure.cosmos.cosmos_client as cosmos_client
import azure.cosmos.exceptions as exceptions
import test_config
from azure.cosmos import _retry_utility, PartitionKey, documents
from azure.cosmos.http_constants import HttpHeaders, StatusCodes
from _fault_injection_transport import FaultInjectionTransport
def setup_method_with_custom_transport(
custom_transport,
**kwargs):
connection_retry_policy = test_config.MockConnectionRetryPolicy(resource_type="docs")
client = cosmos_client.CosmosClient(test_config.TestConfig.host, test_config.TestConfig.masterKey,
transport=custom_transport, connection_retry_policy=connection_retry_policy, **kwargs)
db = client.get_database_client(test_config.TestConfig.TEST_DATABASE_ID)
container = db.get_container_client(test_config.TestConfig.TEST_SINGLE_PARTITION_CONTAINER_ID)
return {"client": client, "db": db, "col": container, "retry_policy": connection_retry_policy}
@pytest.mark.cosmosEmulator
class TestRetryPolicy(unittest.TestCase):
created_database = None
client = None
host = test_config.TestConfig.host
masterKey = test_config.TestConfig.masterKey
connectionPolicy = test_config.TestConfig.connectionPolicy
counter = 0
TEST_DATABASE_ID = test_config.TestConfig.TEST_DATABASE_ID
TEST_CONTAINER_SINGLE_PARTITION_ID = "test-retry-policy-container-" + str(uuid.uuid4())
def __AssertHTTPFailureWithStatus(self, status_code, func, *args, **kwargs):
"""Assert HTTP failure with status.
:Parameters:
- `status_code`: int
- `func`: function
"""
try:
func(*args, **kwargs)
self.assertFalse(True, 'function should fail.')
except exceptions.CosmosHttpResponseError as inst:
self.assertEqual(inst.status_code, status_code)
@classmethod
def setUpClass(cls):
if (cls.masterKey == '[YOUR_KEY_HERE]' or
cls.host == '[YOUR_ENDPOINT_HERE]'):
raise Exception(
"You must specify your Azure Cosmos account values for "
"'masterKey' and 'host' at the top of this class to run the "
"tests.")
cls.client = cosmos_client.CosmosClient(cls.host, cls.masterKey, consistency_level="Session",
connection_policy=cls.connectionPolicy)
cls.created_database = cls.client.get_database_client(cls.TEST_DATABASE_ID)
cls.retry_after_in_milliseconds = 1000
def setUp(self) -> None:
self.created_collection = self.created_database.create_container(self.TEST_CONTAINER_SINGLE_PARTITION_ID,
partition_key=PartitionKey("/pk"))
def tearDown(self) -> None:
try:
self.created_database.delete_container(self.TEST_CONTAINER_SINGLE_PARTITION_ID)
except exceptions.CosmosHttpResponseError:
pass
def test_resource_throttle_retry_policy_default_retry_after(self):
connection_policy = TestRetryPolicy.connectionPolicy
connection_policy.RetryOptions = retry_options.RetryOptions(5)
self.original_execute_function = _retry_utility.ExecuteFunction
try:
_retry_utility.ExecuteFunction = self._MockExecuteFunction
document_definition = {'id': str(uuid.uuid4()),
'pk': 'pk',
'name': 'sample document',
'key': 'value'}
try:
self.created_collection.create_item(body=document_definition)
except exceptions.CosmosHttpResponseError as e:
self.assertEqual(e.status_code, StatusCodes.TOO_MANY_REQUESTS)
self.assertEqual(connection_policy.RetryOptions.MaxRetryAttemptCount,
self.created_collection.client_connection.last_response_headers[
HttpHeaders.ThrottleRetryCount])
self.assertGreaterEqual(self.created_collection.client_connection.last_response_headers[
HttpHeaders.ThrottleRetryWaitTimeInMs],
connection_policy.RetryOptions.MaxRetryAttemptCount *
self.retry_after_in_milliseconds)
finally:
_retry_utility.ExecuteFunction = self.original_execute_function
def test_resource_throttle_retry_policy_fixed_retry_after(self):
connection_policy = TestRetryPolicy.connectionPolicy
connection_policy.RetryOptions = retry_options.RetryOptions(5, 2000)
self.original_execute_function = _retry_utility.ExecuteFunction
try:
_retry_utility.ExecuteFunction = self._MockExecuteFunction
document_definition = {'id': str(uuid.uuid4()),
'pk': 'pk',
'name': 'sample document',
'key': 'value'}
try:
self.created_collection.create_item(body=document_definition)
except exceptions.CosmosHttpResponseError as e:
self.assertEqual(e.status_code, StatusCodes.TOO_MANY_REQUESTS)
self.assertEqual(connection_policy.RetryOptions.MaxRetryAttemptCount,
self.created_collection.client_connection.last_response_headers[
HttpHeaders.ThrottleRetryCount])
self.assertGreaterEqual(self.created_collection.client_connection.last_response_headers[
HttpHeaders.ThrottleRetryWaitTimeInMs],
connection_policy.RetryOptions.MaxRetryAttemptCount * connection_policy.RetryOptions.FixedRetryIntervalInMilliseconds)
finally:
_retry_utility.ExecuteFunction = self.original_execute_function
def test_resource_throttle_retry_policy_max_wait_time(self):
connection_policy = TestRetryPolicy.connectionPolicy
connection_policy.RetryOptions = retry_options.RetryOptions(5, 2000, 3)
self.original_execute_function = _retry_utility.ExecuteFunction
try:
_retry_utility.ExecuteFunction = self._MockExecuteFunction
document_definition = {'id': str(uuid.uuid4()),
'pk': 'pk',
'name': 'sample document',
'key': 'value'}
try:
self.created_collection.create_item(body=document_definition)
except exceptions.CosmosHttpResponseError as e:
self.assertEqual(e.status_code, StatusCodes.TOO_MANY_REQUESTS)
self.assertGreaterEqual(self.created_collection.client_connection.last_response_headers[
HttpHeaders.ThrottleRetryWaitTimeInMs],
connection_policy.RetryOptions.MaxWaitTimeInSeconds * 1000)
finally:
_retry_utility.ExecuteFunction = self.original_execute_function
def test_resource_throttle_retry_policy_query(self):
connection_policy = TestRetryPolicy.connectionPolicy
connection_policy.RetryOptions = retry_options.RetryOptions(5)
document_definition = {'id': str(uuid.uuid4()),
'pk': 'pk',
'name': 'sample document',
'key': 'value'}
self.created_collection.create_item(body=document_definition)
self.original_execute_function = _retry_utility.ExecuteFunction
try:
_retry_utility.ExecuteFunction = self._MockExecuteFunction
try:
list(self.created_collection.query_items(
{
'query': 'SELECT * FROM root r WHERE r.id=@id',
'parameters': [
{'name': '@id', 'value': document_definition['id']}
]
}))
except exceptions.CosmosHttpResponseError as e:
self.assertEqual(e.status_code, StatusCodes.TOO_MANY_REQUESTS)
self.assertEqual(connection_policy.RetryOptions.MaxRetryAttemptCount,
self.created_collection.client_connection.last_response_headers[
HttpHeaders.ThrottleRetryCount])
self.assertGreaterEqual(self.created_collection.client_connection.last_response_headers[
HttpHeaders.ThrottleRetryWaitTimeInMs],
connection_policy.RetryOptions.MaxRetryAttemptCount * self.retry_after_in_milliseconds)
finally:
_retry_utility.ExecuteFunction = self.original_execute_function
# TODO: Need to validate the query retries
@pytest.mark.skip
def test_default_retry_policy_for_query(self):
document_definition_1 = {'id': str(uuid.uuid4()),
'pk': 'pk',
'name': 'sample document',
'key': 'value'}
document_definition_2 = {'id': str(uuid.uuid4()),
'pk': 'pk',
'name': 'sample document',
'key': 'value'}
self.created_collection.create_item(body=document_definition_1)
self.created_collection.create_item(body=document_definition_2)
self.original_execute_function = _retry_utility.ExecuteFunction
try:
mf = self.MockExecuteFunctionConnectionReset(self.original_execute_function)
_retry_utility.ExecuteFunction = mf
docs = self.created_collection.query_items(query="Select * from c order by c._ts", max_item_count=1,
enable_cross_partition_query=True)
result_docs = list(docs)
self.assertEqual(result_docs[0]['id'], document_definition_1['id'])
self.assertEqual(result_docs[1]['id'], document_definition_2['id'])
self.assertEqual(mf.counter, 27)
finally:
_retry_utility.ExecuteFunction = self.original_execute_function
def test_default_retry_policy_for_create(self):
document_definition = {'id': str(uuid.uuid4()),
'pk': 'pk',
'name': 'sample document',
'key': 'value'}
try:
self.original_execute_function = _retry_utility.ExecuteFunction
mf = self.MockExecuteFunctionConnectionReset(self.original_execute_function)
_retry_utility.ExecuteFunction = mf
created_document = {}
try:
created_document = self.created_collection.create_item(body=document_definition)
except exceptions.CosmosHttpResponseError as err:
self.assertEqual(err.status_code, 10054)
self.assertDictEqual(created_document, {})
self.assertEqual(mf.counter, 1)
finally:
_retry_utility.ExecuteFunction = self.original_execute_function
def test_timeout_failover_retry_policy_for_read(self):
document_definition = {'id': 'failoverDoc',
'pk': 'pk',
'name': 'sample document',
'key': 'value'}
created_document = self.created_collection.create_item(body=document_definition)
self.original_execute_function = _retry_utility.ExecuteFunction
try:
mf = self.MockExecuteFunctionTimeout(self.original_execute_function)
_retry_utility.ExecuteFunction = mf
try:
self.created_collection.read_item(item=created_document['id'], partition_key=created_document['pk'])
except exceptions.CosmosHttpResponseError as err:
self.assertEqual(err.status_code, 408)
finally:
_retry_utility.ExecuteFunction = self.original_execute_function
def test_resource_throttle_retry_policy_with_retry_total(self):
# Testing the kwarg retry_total still has ability to set throttle's max retry attempt count
max_total_retries = 15
with cosmos_client.CosmosClient(self.host, self.masterKey, retry_total=max_total_retries) as client:
database = client.get_database_client(test_config.TestConfig.TEST_DATABASE_ID)
container = database.get_container_client(test_config.TestConfig.TEST_SINGLE_PARTITION_CONTAINER_ID)
try:
self.original_execute_function = _retry_utility.ExecuteFunction
_retry_utility.ExecuteFunction = self._MockExecuteFunction
document_definition = {'id': str(uuid.uuid4()),
'pk': 'pk',
'name': 'sample document',
'key': 'value'}
container.create_item(body=document_definition)
except exceptions.CosmosHttpResponseError as e:
self.assertEqual(e.status_code, StatusCodes.TOO_MANY_REQUESTS)
self.assertEqual(container.client_connection.connection_policy.RetryOptions.MaxRetryAttemptCount,
container.client_connection.last_response_headers[
HttpHeaders.ThrottleRetryCount])
self.assertEqual(container.client_connection.connection_policy.ConnectionRetryConfiguration.total_retries, max_total_retries)
self.assertGreaterEqual(container.client_connection.last_response_headers[
HttpHeaders.ThrottleRetryWaitTimeInMs],
container.client_connection.connection_policy.RetryOptions.MaxRetryAttemptCount *
self.retry_after_in_milliseconds)
finally:
_retry_utility.ExecuteFunction = self.original_execute_function
def test_resource_throttle_retry_policy_with_retry_throttle_total(self):
#Testing the kwarg retry_throttle_total is behaving as expected
with cosmos_client.CosmosClient(self.host, self.masterKey, retry_throttle_total=5) as client:
database = client.get_database_client(test_config.TestConfig.TEST_DATABASE_ID)
container = database.get_container_client(test_config.TestConfig.TEST_SINGLE_PARTITION_CONTAINER_ID)
try:
self.original_execute_function = _retry_utility.ExecuteFunction
_retry_utility.ExecuteFunction = self._MockExecuteFunction
document_definition = {'id': str(uuid.uuid4()),
'pk': 'pk',
'name': 'sample document',
'key': 'value'}
container.create_item(body=document_definition)
except exceptions.CosmosHttpResponseError as e:
self.assertEqual(e.status_code, StatusCodes.TOO_MANY_REQUESTS)
self.assertEqual(container.client_connection.connection_policy.RetryOptions.MaxRetryAttemptCount,
container.client_connection.last_response_headers[
HttpHeaders.ThrottleRetryCount])
self.assertGreaterEqual(container.client_connection.last_response_headers[
HttpHeaders.ThrottleRetryWaitTimeInMs],
container.client_connection.connection_policy.RetryOptions.MaxRetryAttemptCount *
self.retry_after_in_milliseconds)
finally:
_retry_utility.ExecuteFunction = self.original_execute_function
def test_resource_throttle_retry_policy_precedence(self):
# Tests if retry_throttle_total and retry_total are specified then retry_throttle_total should take precedence retry_total
max_retry_throttle_retries = 15
max_total_retries = 20
with cosmos_client.CosmosClient(self.host, self.masterKey, retry_throttle_total=max_retry_throttle_retries, retry_total=max_total_retries) as client:
database = client.get_database_client(test_config.TestConfig.TEST_DATABASE_ID)
container = database.get_container_client(test_config.TestConfig.TEST_SINGLE_PARTITION_CONTAINER_ID)
try:
self.original_execute_function = _retry_utility.ExecuteFunction
_retry_utility.ExecuteFunction = self._MockExecuteFunction
document_definition = {'id': str(uuid.uuid4()),
'pk': 'pk',
'name': 'sample document',
'key': 'value'}
container.create_item(body=document_definition)
except exceptions.CosmosHttpResponseError as e:
self.assertEqual(e.status_code, StatusCodes.TOO_MANY_REQUESTS)
self.assertEqual(container.client_connection.connection_policy.RetryOptions.MaxRetryAttemptCount,
container.client_connection.last_response_headers[
HttpHeaders.ThrottleRetryCount])
self.assertEqual(container.client_connection.connection_policy.ConnectionRetryConfiguration.total_retries, max_total_retries)
self.assertGreaterEqual(container.client_connection.last_response_headers[
HttpHeaders.ThrottleRetryWaitTimeInMs],
container.client_connection.connection_policy.RetryOptions.MaxRetryAttemptCount *
self.retry_after_in_milliseconds)
finally:
_retry_utility.ExecuteFunction = self.original_execute_function
def test_resource_connection_retry_policy_max_backoff(self):
# Tests that kwarg retry_max_backoff sets both throttle and connection retry policy
max_backoff_in_seconds = 10
with cosmos_client.CosmosClient(self.host, self.masterKey, retry_backoff_max=max_backoff_in_seconds, retry_total=5) as client:
database = client.get_database_client(test_config.TestConfig.TEST_DATABASE_ID)
container = database.get_container_client(test_config.TestConfig.TEST_SINGLE_PARTITION_CONTAINER_ID)
document_definition = {'id': str(uuid.uuid4()),
'pk': 'pk',
'name': 'sample document',
'key': 'value'}
try:
self.original_execute_function = _retry_utility.ExecuteFunction
mf = self.MockExecuteFunctionConnectionReset(self.original_execute_function)
_retry_utility.ExecuteFunction = mf
created_document = {}
created_document = container.create_item(body=document_definition)
except exceptions.CosmosHttpResponseError as err:
self.assertEqual(err.status_code, 10054)
self.assertEqual(container.client_connection.connection_policy.ConnectionRetryConfiguration.backoff_max, max_backoff_in_seconds)
self.assertEqual(container.client_connection.connection_policy.RetryOptions._max_wait_time_in_seconds, max_backoff_in_seconds)
self.assertDictEqual(created_document, {})
finally:
_retry_utility.ExecuteFunction = self.original_execute_function
def test_resource_throttle_retry_policy_max_throttle_backoff(self):
# Tests that kwarg retry_throttle_backoff_max sets the throttle max backoff retry independent of connection max backoff retry
max_throttle_backoff_in_seconds = 10
with cosmos_client.CosmosClient(self.host, self.masterKey, retry_throttle_backoff_max=max_throttle_backoff_in_seconds) as client:
database = client.get_database_client(test_config.TestConfig.TEST_DATABASE_ID)
container = database.get_container_client(test_config.TestConfig.TEST_SINGLE_PARTITION_CONTAINER_ID)
document_definition = {'id': str(uuid.uuid4()),
'pk': 'pk',
'name': 'sample document',
'key': 'value'}
try:
self.original_execute_function = _retry_utility.ExecuteFunction
mf = self.MockExecuteFunctionConnectionReset(self.original_execute_function)
_retry_utility.ExecuteFunction = mf
created_document = {}
created_document = container.create_item(body=document_definition)
except exceptions.CosmosHttpResponseError as err:
self.assertEqual(err.status_code, 10054)
self.assertEqual(container.client_connection.connection_policy.RetryOptions._max_wait_time_in_seconds,
max_throttle_backoff_in_seconds)
self.assertDictEqual(created_document, {})
finally:
_retry_utility.ExecuteFunction = self.original_execute_function
def test_resource_throttle_retry_policy_max_backoff_precedence(self):
# Tests to ensure kwargs precedence is being respected between retry_backoff_max and retry_throttle_backoff_max
max_backoff_in_seconds = 10
max_throttle_backoff_in_seconds = 5
with cosmos_client.CosmosClient(self.host, self.masterKey, retry_backoff_max=max_backoff_in_seconds,
retry_throttle_backoff_max=max_throttle_backoff_in_seconds) as client:
database = client.get_database_client(test_config.TestConfig.TEST_DATABASE_ID)
container = database.get_container_client(test_config.TestConfig.TEST_SINGLE_PARTITION_CONTAINER_ID)
document_definition = {'id': str(uuid.uuid4()),
'pk': 'pk',
'name': 'sample document',
'key': 'value'}
try:
self.original_execute_function = _retry_utility.ExecuteFunction
mf = self.MockExecuteFunctionConnectionReset(self.original_execute_function)
_retry_utility.ExecuteFunction = mf
created_document = {}
created_document = container.create_item(body=document_definition)
except exceptions.CosmosHttpResponseError as err:
self.assertEqual(err.status_code, 10054)
self.assertEqual(container.client_connection.connection_policy.ConnectionRetryConfiguration.backoff_max,
max_backoff_in_seconds)
self.assertEqual(container.client_connection.connection_policy.RetryOptions._max_wait_time_in_seconds,
max_throttle_backoff_in_seconds)
self.assertDictEqual(created_document, {})
finally:
_retry_utility.ExecuteFunction = self.original_execute_function
def test_resource_throttle_and_connection_retry_total_retry_with_max_backoff(self):
# Tests kwarg precedence respect with both max total retries and max backoff for both throttle and connection retry policies
max_retry_throttle_retries = 15
max_total_retries = 20
max_throttle_backoff_in_seconds = 25
max_backoff_in_seconds = 30
with cosmos_client.CosmosClient(self.host, self.masterKey, retry_backoff_max=max_backoff_in_seconds,
retry_throttle_backoff_max=max_throttle_backoff_in_seconds,
retry_throttle_total=max_retry_throttle_retries,
retry_total=max_total_retries) as client:
database = client.get_database_client(test_config.TestConfig.TEST_DATABASE_ID)
container = database.get_container_client(test_config.TestConfig.TEST_SINGLE_PARTITION_CONTAINER_ID)
self.original_execute_function = _retry_utility.ExecuteFunction
try:
_retry_utility.ExecuteFunction = self._MockExecuteFunction
document_definition = {'id': str(uuid.uuid4()),
'pk': 'pk',
'name': 'sample document',
'key': 'value'}
container.create_item(body=document_definition)
except exceptions.CosmosHttpResponseError as e:
self.assertEqual(e.status_code, StatusCodes.TOO_MANY_REQUESTS)
self.assertEqual(container.client_connection.connection_policy.RetryOptions.MaxRetryAttemptCount,
container.client_connection.last_response_headers[
HttpHeaders.ThrottleRetryCount])
self.assertEqual(container.client_connection.connection_policy.ConnectionRetryConfiguration.backoff_max,
max_backoff_in_seconds)
self.assertEqual(container.client_connection.connection_policy.RetryOptions._max_wait_time_in_seconds,
max_throttle_backoff_in_seconds)
self.assertEqual(container.client_connection.connection_policy.ConnectionRetryConfiguration.total_retries,
max_total_retries)
finally:
_retry_utility.ExecuteFunction = self.original_execute_function
def test_patch_replace_no_retry(self):
doc = {'id': str(uuid.uuid4()),
'pk': str(uuid.uuid4()),
'name': 'sample document',
'key': 'value'}
custom_transport = FaultInjectionTransport()
predicate = lambda r: (FaultInjectionTransport.predicate_is_operation_type(r, documents._OperationType.Patch)
or FaultInjectionTransport.predicate_is_operation_type(r, documents._OperationType.Replace))
custom_transport.add_fault(predicate, lambda r: FaultInjectionTransport.error_after_delay(
0,
exceptions.CosmosHttpResponseError(
status_code=502,
message="Some random reverse proxy error.")))
initialized_objects = setup_method_with_custom_transport(
custom_transport,
)
container = initialized_objects["col"]
connection_retry_policy = initialized_objects["retry_policy"]
container.create_item(body=doc)
operations = [{"op": "incr", "path": "/company", "value": 3}]
with self.assertRaises(exceptions.CosmosHttpResponseError):
container.patch_item(item=doc['id'], partition_key=doc['pk'], patch_operations=operations)
assert connection_retry_policy.counter == 0
with self.assertRaises(exceptions.CosmosHttpResponseError):
doc['name'] = "something else"
container.replace_item(item=doc['id'], body=doc)
assert connection_retry_policy.counter == 0
def _MockExecuteFunction(self, function, *args, **kwargs):
response = test_config.FakeResponse({HttpHeaders.RetryAfterInMilliseconds: self.retry_after_in_milliseconds})
raise exceptions.CosmosHttpResponseError(
status_code=StatusCodes.TOO_MANY_REQUESTS,
message="Request rate is too large",
response=response)
class MockExecuteFunctionTimeout(object):
def __init__(self, org_func):
self.org_func = org_func
self.counter = 0
def __call__(self, func, *args, **kwargs):
raise exceptions.CosmosHttpResponseError(
status_code=408,
message="Timeout",
response=test_config.FakeResponse({}))
class MockExecuteFunctionConnectionReset(object):
def __init__(self, org_func):
self.org_func = org_func
self.counter = 0
def __call__(self, func, *args, **kwargs):
self.counter = self.counter + 1
if self.counter % 3 == 0:
return self.org_func(func, *args, **kwargs)
else:
raise exceptions.CosmosHttpResponseError(
status_code=10054,
message="Connection was reset",
response=test_config.FakeResponse({}))
if __name__ == '__main__':
unittest.main()
|
