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import eventlet
import tests
def slow_append(result, value, delay):
eventlet.sleep(delay)
result.append(value)
return value * 10
def slow_error(delay):
eventlet.sleep(delay)
raise ValueError("error")
try:
import asyncio
exec('''if 1:
@asyncio.coroutine
def wait_greenthread(gt, loop=None):
if loop is None:
loop = asyncio.get_event_loop()
fut = asyncio.Future(loop=loop)
def copy_result(gt):
try:
value = gt.wait()
except Exception as exc:
loop.call_soon(fut.set_exception, exc)
else:
loop.call_soon(fut.set_result, value)
gt.link(copy_result)
value = yield from fut
return value
@asyncio.coroutine
def coro_chain_greenthread():
result = []
loop = asyncio.get_event_loop()
g1 = eventlet.spawn(slow_append, result, 1, 0.2)
value = yield from wait_greenthread(g1, loop=loop)
result.append(value)
g2 = eventlet.spawn(slow_append, result, 2, 0.1)
value = yield from wait_greenthread(g2, loop=loop)
result.append(value)
g3 = eventlet.spawn(slow_error, 0.001)
try:
yield from wait_greenthread(g3, loop=loop)
except ValueError as exc:
result.append(str(exc))
result.append(4)
return result
''')
except ImportError:
import trollius as asyncio
from trollius import From, Return
@asyncio.coroutine
def wait_greenthread(gt, loop=None):
if loop is None:
loop = asyncio.get_event_loop()
fut = asyncio.Future(loop=loop)
def copy_result(gt):
try:
value = gt.wait()
except Exception as exc:
loop.call_soon(fut.set_exception, exc)
else:
loop.call_soon(fut.set_result, value)
gt.link(copy_result)
value = yield From(fut)
raise Return(value)
@asyncio.coroutine
def coro_chain_greenthread():
result = []
loop = asyncio.get_event_loop()
g1 = eventlet.spawn(slow_append, result, 1, 0.2)
value = yield From(wait_greenthread(g1, loop=loop))
result.append(value)
g2 = eventlet.spawn(slow_append, result, 2, 0.1)
value = yield From(wait_greenthread(g2, loop=loop))
result.append(value)
g3 = eventlet.spawn(slow_error, 0.001)
try:
yield From(wait_greenthread(g3, loop=loop))
except ValueError as exc:
result.append(str(exc))
result.append(4)
raise Return(result)
class EventletTests(tests.TestCase):
def test_stop(self):
def func():
eventlet.spawn(self.loop.call_soon, self.loop.stop)
def schedule_greenthread():
eventlet.spawn(func)
self.loop.call_soon(schedule_greenthread)
self.loop.run_forever()
def test_soon(self):
result = []
def func():
result.append("spawn")
self.loop.call_soon(self.loop.stop)
def schedule_greenthread():
eventlet.spawn(func)
self.loop.call_soon(schedule_greenthread)
self.loop.run_forever()
self.assertEqual(result, ["spawn"])
def test_soon_spawn(self):
result = []
def func1():
result.append("spawn")
def func2():
result.append("spawn_after")
self.loop.call_soon(self.loop.stop)
def schedule_greenthread():
eventlet.spawn(func1)
eventlet.spawn_after(0.010, func2)
self.loop.call_soon(schedule_greenthread)
self.loop.run_forever()
self.assertEqual(result, ["spawn", "spawn_after"])
def test_coro_chain_greenthread(self):
result = self.loop.run_until_complete(coro_chain_greenthread())
self.assertEqual(result, [1, 10, 2, 20, 'error', 4])
if __name__ == '__main__':
import unittest
unittest.main()
|
