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import os
import socket
import tempfile
import ipaddress
import pytest
from grpclib.client import Channel
from grpclib.server import Server
from dummy_pb2 import DummyRequest, DummyReply
from dummy_grpc import DummyServiceBase, DummyServiceStub
class DummyService(DummyServiceBase):
def __init__(self):
self.log = []
async def UnaryUnary(self, stream):
request = await stream.recv_message()
self.log.append(request)
await stream.send_message(DummyReply(value='pong'))
async def UnaryStream(self, stream):
request = await stream.recv_message()
self.log.append(request)
assert await stream.recv_message() is None
await stream.send_message(DummyReply(value='pong1'))
await stream.send_message(DummyReply(value='pong2'))
await stream.send_message(DummyReply(value='pong3'))
async def StreamUnary(self, stream):
async for request in stream:
self.log.append(request)
await stream.send_message(DummyReply(value='pong'))
async def StreamStream(self, stream):
async for request in stream:
self.log.append(request)
await stream.send_message(DummyReply(value=request.value))
class ClientServer:
server = None
server_ctx = None
channel = None
channel_ctx = None
def __init__(self, *, host="127.0.0.1"):
self.host = host
async def __aenter__(self):
try:
ipaddress.IPv6Address(self.host)
except ipaddress.AddressValueError:
family = socket.AF_INET
else:
family = socket.AF_INET6
with socket.socket(family, socket.SOCK_STREAM) as s:
s.bind((self.host, 0))
_, port, *_ = s.getsockname()
dummy_service = DummyService()
self.server = Server([dummy_service])
await self.server.start(self.host, port)
self.server_ctx = await self.server.__aenter__()
self.channel = Channel(host=self.host, port=port)
self.channel_ctx = await self.channel.__aenter__()
dummy_stub = DummyServiceStub(self.channel)
return dummy_service, dummy_stub
async def __aexit__(self, *exc_info):
await self.channel_ctx.__aexit__(*exc_info)
await self.server_ctx.__aexit__(*exc_info)
class UnixClientServer:
temp = None
sock = None
server = None
server_ctx = None
channel = None
channel_ctx = None
async def __aenter__(self):
self.temp = tempfile.mkdtemp()
self.sock = os.path.join(self.temp, 'grpclib.sock')
dummy_service = DummyService()
self.server = Server([dummy_service])
await self.server.start(path=self.sock)
self.server_ctx = await self.server.__aenter__()
self.channel = Channel(path=self.sock)
self.channel_ctx = await self.channel.__aenter__()
dummy_stub = DummyServiceStub(self.channel)
return dummy_service, dummy_stub
async def __aexit__(self, *exc_info):
await self.channel_ctx.__aexit__(*exc_info)
await self.server_ctx.__aexit__(*exc_info)
if os.path.exists(self.sock):
os.unlink(self.sock)
if os.path.exists(self.temp):
os.rmdir(self.temp)
@pytest.mark.asyncio
async def test_close_empty_channel():
async with ClientServer():
"""it should not raise exceptions"""
@pytest.mark.asyncio
async def test_unary_unary_simple():
async with ClientServer() as (handler, stub):
reply = await stub.UnaryUnary(DummyRequest(value='ping'))
assert reply == DummyReply(value='pong')
assert handler.log == [DummyRequest(value='ping')]
@pytest.mark.asyncio
async def test_unary_unary_simple_unix():
async with UnixClientServer() as (handler, stub):
reply = await stub.UnaryUnary(DummyRequest(value='ping'))
assert reply == DummyReply(value='pong')
assert handler.log == [DummyRequest(value='ping')]
@pytest.mark.asyncio
async def test_unary_unary_advanced():
async with ClientServer() as (handler, stub):
async with stub.UnaryUnary.open() as stream:
await stream.send_message(DummyRequest(value='ping'), end=True)
reply = await stream.recv_message()
assert reply == DummyReply(value='pong')
assert handler.log == [DummyRequest(value='ping')]
@pytest.mark.asyncio
async def test_unary_stream_simple():
async with ClientServer() as (handler, stub):
replies = await stub.UnaryStream(DummyRequest(value='ping'))
assert handler.log == [DummyRequest(value='ping')]
assert replies == [DummyReply(value='pong1'),
DummyReply(value='pong2'),
DummyReply(value='pong3')]
@pytest.mark.asyncio
async def test_unary_stream_advanced():
async with ClientServer() as (handler, stub):
async with stub.UnaryStream.open() as stream:
await stream.send_message(DummyRequest(value='ping'), end=True)
replies = [message async for message in stream]
assert handler.log == [DummyRequest(value='ping')]
assert replies == [DummyReply(value='pong1'),
DummyReply(value='pong2'),
DummyReply(value='pong3')]
@pytest.mark.asyncio
async def test_stream_unary_simple():
async with ClientServer() as (handler, stub):
reply = await stub.StreamUnary([
DummyRequest(value='ping1'),
DummyRequest(value='ping2'),
DummyRequest(value='ping3'),
])
assert reply == DummyReply(value='pong')
assert handler.log == [DummyRequest(value='ping1'),
DummyRequest(value='ping2'),
DummyRequest(value='ping3')]
@pytest.mark.asyncio
async def test_stream_unary_advanced():
async with ClientServer() as (handler, stub):
async with stub.StreamUnary.open() as stream:
await stream.send_message(DummyRequest(value='ping1'))
await stream.send_message(DummyRequest(value='ping2'))
await stream.send_message(DummyRequest(value='ping3'), end=True)
reply = await stream.recv_message()
assert reply == DummyReply(value='pong')
assert handler.log == [DummyRequest(value='ping1'),
DummyRequest(value='ping2'),
DummyRequest(value='ping3')]
@pytest.mark.asyncio
async def test_stream_stream_simple():
async with ClientServer() as (_, stub):
replies = await stub.StreamStream([
DummyRequest(value='foo'),
DummyRequest(value='bar'),
DummyRequest(value='baz'),
])
assert replies == [
DummyReply(value='foo'),
DummyReply(value='bar'),
DummyReply(value='baz'),
]
@pytest.mark.asyncio
async def test_stream_stream_advanced():
async with ClientServer() as (_, stub):
async with stub.StreamStream.open() as stream:
await stream.send_message(DummyRequest(value='foo'))
assert await stream.recv_message() == DummyReply(value='foo')
await stream.send_message(DummyRequest(value='bar'))
assert await stream.recv_message() == DummyReply(value='bar')
await stream.send_message(DummyRequest(value='baz'), end=True)
assert await stream.recv_message() == DummyReply(value='baz')
assert await stream.recv_message() is None
@pytest.mark.asyncio
@pytest.mark.skipif(not socket.has_ipv6, reason="No IPv6 support")
async def test_ipv6():
async with ClientServer(host="::1") as (handler, stub):
reply = await stub.UnaryUnary(DummyRequest(value='ping'))
assert reply == DummyReply(value='pong')
assert handler.log == [DummyRequest(value='ping')]
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