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import random
from contextlib import asynccontextmanager as _asynccontextmanager
from typing import Union
from urllib.parse import urlparse
import pytest
import pytest_asyncio
from packaging.version import Version
import redis.asyncio as redis
from redis.asyncio.client import Monitor
from redis.asyncio.connection import (
HIREDIS_AVAILABLE,
HiredisParser,
PythonParser,
parse_url,
)
from redis.asyncio.retry import Retry
from redis.backoff import NoBackoff
from tests.conftest import REDIS_INFO
from .compat import mock
async def _get_info(redis_url):
client = redis.Redis.from_url(redis_url)
info = await client.info()
await client.connection_pool.disconnect()
return info
@pytest_asyncio.fixture(
params=[
pytest.param(
(True, PythonParser),
marks=pytest.mark.skipif(
'config.REDIS_INFO["cluster_enabled"]', reason="cluster mode enabled"
),
),
(False, PythonParser),
pytest.param(
(True, HiredisParser),
marks=[
pytest.mark.skipif(
'config.REDIS_INFO["cluster_enabled"]',
reason="cluster mode enabled",
),
pytest.mark.skipif(
not HIREDIS_AVAILABLE, reason="hiredis is not installed"
),
],
),
pytest.param(
(False, HiredisParser),
marks=pytest.mark.skipif(
not HIREDIS_AVAILABLE, reason="hiredis is not installed"
),
),
],
ids=[
"single-python-parser",
"pool-python-parser",
"single-hiredis",
"pool-hiredis",
],
)
async def create_redis(request):
"""Wrapper around redis.create_redis."""
single_connection, parser_cls = request.param
teardown_clients = []
async def client_factory(
url: str = request.config.getoption("--redis-url"),
cls=redis.Redis,
flushdb=True,
**kwargs,
):
cluster_mode = REDIS_INFO["cluster_enabled"]
if not cluster_mode:
single = kwargs.pop("single_connection_client", False) or single_connection
parser_class = kwargs.pop("parser_class", None) or parser_cls
url_options = parse_url(url)
url_options.update(kwargs)
pool = redis.ConnectionPool(parser_class=parser_class, **url_options)
client = cls(connection_pool=pool)
else:
client = redis.RedisCluster.from_url(url, **kwargs)
await client.initialize()
single = False
if single:
client = client.client()
await client.initialize()
async def teardown():
if not cluster_mode:
if flushdb and "username" not in kwargs:
try:
await client.flushdb()
except redis.ConnectionError:
# handle cases where a test disconnected a client
# just manually retry the flushdb
await client.flushdb()
await client.close()
await client.connection_pool.disconnect()
else:
if flushdb:
try:
await client.flushdb(target_nodes="primaries")
except redis.ConnectionError:
# handle cases where a test disconnected a client
# just manually retry the flushdb
await client.flushdb(target_nodes="primaries")
await client.close()
teardown_clients.append(teardown)
return client
yield client_factory
for teardown in teardown_clients:
await teardown()
@pytest_asyncio.fixture()
async def r(create_redis):
return await create_redis()
@pytest_asyncio.fixture()
async def r2(create_redis):
"""A second client for tests that need multiple"""
return await create_redis()
@pytest_asyncio.fixture()
async def modclient(request, create_redis):
return await create_redis(
url=request.config.getoption("--redismod-url"), decode_responses=True
)
def _gen_cluster_mock_resp(r, response):
connection = mock.AsyncMock()
connection.retry = Retry(NoBackoff(), 0)
connection.read_response.return_value = response
r.connection = connection
return r
@pytest_asyncio.fixture()
async def mock_cluster_resp_ok(create_redis, **kwargs):
r = await create_redis(**kwargs)
return _gen_cluster_mock_resp(r, "OK")
@pytest_asyncio.fixture()
async def mock_cluster_resp_int(create_redis, **kwargs):
r = await create_redis(**kwargs)
return _gen_cluster_mock_resp(r, "2")
@pytest_asyncio.fixture()
async def mock_cluster_resp_info(create_redis, **kwargs):
r = await create_redis(**kwargs)
response = (
"cluster_state:ok\r\ncluster_slots_assigned:16384\r\n"
"cluster_slots_ok:16384\r\ncluster_slots_pfail:0\r\n"
"cluster_slots_fail:0\r\ncluster_known_nodes:7\r\n"
"cluster_size:3\r\ncluster_current_epoch:7\r\n"
"cluster_my_epoch:2\r\ncluster_stats_messages_sent:170262\r\n"
"cluster_stats_messages_received:105653\r\n"
)
return _gen_cluster_mock_resp(r, response)
@pytest_asyncio.fixture()
async def mock_cluster_resp_nodes(create_redis, **kwargs):
r = await create_redis(**kwargs)
response = (
"c8253bae761cb1ecb2b61857d85dfe455a0fec8b 172.17.0.7:7006 "
"slave aa90da731f673a99617dfe930306549a09f83a6b 0 "
"1447836263059 5 connected\n"
"9bd595fe4821a0e8d6b99d70faa660638a7612b3 172.17.0.7:7008 "
"master - 0 1447836264065 0 connected\n"
"aa90da731f673a99617dfe930306549a09f83a6b 172.17.0.7:7003 "
"myself,master - 0 0 2 connected 5461-10922\n"
"1df047e5a594f945d82fc140be97a1452bcbf93e 172.17.0.7:7007 "
"slave 19efe5a631f3296fdf21a5441680f893e8cc96ec 0 "
"1447836262556 3 connected\n"
"4ad9a12e63e8f0207025eeba2354bcf4c85e5b22 172.17.0.7:7005 "
"master - 0 1447836262555 7 connected 0-5460\n"
"19efe5a631f3296fdf21a5441680f893e8cc96ec 172.17.0.7:7004 "
"master - 0 1447836263562 3 connected 10923-16383\n"
"fbb23ed8cfa23f17eaf27ff7d0c410492a1093d6 172.17.0.7:7002 "
"master,fail - 1447829446956 1447829444948 1 disconnected\n"
)
return _gen_cluster_mock_resp(r, response)
@pytest_asyncio.fixture()
async def mock_cluster_resp_slaves(create_redis, **kwargs):
r = await create_redis(**kwargs)
response = (
"['1df047e5a594f945d82fc140be97a1452bcbf93e 172.17.0.7:7007 "
"slave 19efe5a631f3296fdf21a5441680f893e8cc96ec 0 "
"1447836789290 3 connected']"
)
return _gen_cluster_mock_resp(r, response)
@pytest_asyncio.fixture(scope="session")
def master_host(request):
url = request.config.getoption("--redis-url")
parts = urlparse(url)
return parts.hostname
async def wait_for_command(
client: redis.Redis, monitor: Monitor, command: str, key: Union[str, None] = None
):
# issue a command with a key name that's local to this process.
# if we find a command with our key before the command we're waiting
# for, something went wrong
if key is None:
# generate key
redis_version = REDIS_INFO["version"]
if Version(redis_version) >= Version("5.0.0"):
id_str = str(await client.client_id())
else:
id_str = f"{random.randrange(2 ** 32):08x}"
key = f"__REDIS-PY-{id_str}__"
await client.get(key)
while True:
monitor_response = await monitor.next_command()
if command in monitor_response["command"]:
return monitor_response
if key in monitor_response["command"]:
return None
# python 3.6 doesn't have the asynccontextmanager decorator. Provide it here.
class AsyncContextManager:
def __init__(self, async_generator):
self.gen = async_generator
async def __aenter__(self):
try:
return await self.gen.__anext__()
except StopAsyncIteration as err:
raise RuntimeError("Pickles") from err
async def __aexit__(self, exc_type, exc_inst, tb):
if exc_type:
await self.gen.athrow(exc_type, exc_inst, tb)
return True
try:
await self.gen.__anext__()
except StopAsyncIteration:
return
raise RuntimeError("More pickles")
def asynccontextmanager(func):
return _asynccontextmanager(func)
|
