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from __future__ import print_function
import asyncio
from opentracing.mocktracer import MockTracer
from opentracing.scope_managers.contextvars import ContextVarsScopeManager, \
no_parent_scope
from ..testcase import OpenTracingTestCase
from ..utils import stop_loop_when
class TestAsyncioContextVars(OpenTracingTestCase):
def setUp(self):
self.tracer = MockTracer(ContextVarsScopeManager())
self.loop = asyncio.get_event_loop()
def test_main(self):
def submit():
span = self.tracer.scope_manager.active.span
async def task1():
self.assertEqual(span, self.tracer.active_span)
self.tracer.active_span.set_tag('key1', '1')
async def task2():
self.assertEqual(span, self.tracer.active_span)
self.tracer.active_span.set_tag('key2', '2')
async def task3():
self.assertEqual(span, self.tracer.active_span)
self.tracer.active_span.set_tag('key3', '3')
self.tracer.active_span.finish()
self.loop.create_task(task3())
self.loop.create_task(task2())
self.loop.create_task(task1())
# Start a Span and let the callback-chain
# finish it when the task is done
async def task():
with self.tracer.start_active_span('one', finish_on_close=False):
submit()
self.loop.create_task(task())
stop_loop_when(self.loop,
lambda: len(self.tracer.finished_spans()) == 1)
self.loop.run_forever()
span, = self.tracer.finished_spans()
self.assertEqual(span.operation_name, 'one')
for i in range(1, 4):
self.assertEqual(span.tags.get('key%s' % i, None), str(i))
class TestAsyncioContextVarsScheduleInLoop(OpenTracingTestCase):
# TODO: move the test-case to another file
def setUp(self):
self.tracer = MockTracer(ContextVarsScopeManager())
self.loop = asyncio.get_event_loop()
def test_schedule_callbacks(self):
def callback(op_name):
with self.tracer.start_active_span(
operation_name=op_name,
child_of=self.tracer.active_span,
):
pass
def callback_with_nested_callback(op_name):
with self.tracer.start_active_span(
operation_name=op_name,
child_of=self.tracer.active_span,
):
self.loop.call_soon(callback, 'childof:{}'.format(op_name))
with self.tracer.start_active_span('root'):
self.loop.call_soon(callback_with_nested_callback, 'first')
self.loop.call_soon(callback, 'second')
stop_loop_when(self.loop,
lambda: len(self.tracer.finished_spans()) == 4)
self.loop.run_forever()
root, first, second, childof_first = self.tracer.finished_spans()
self.assertEmptySpan(root, 'root')
self.assertEmptySpan(first, 'first')
self.assertEmptySpan(second, 'second')
self.assertEmptySpan(childof_first, 'childof:first')
self.assertIsChildOf(first, root)
self.assertIsChildOf(childof_first, first)
self.assertIsChildOf(second, root)
def test_coroutines_schedule_callbacks(self):
def callback(op_name):
with self.tracer.start_active_span(
operation_name=op_name,
child_of=self.tracer.active_span
):
pass
async def task(op_name):
with self.tracer.start_active_span(
operation_name=op_name,
child_of=self.tracer.active_span
):
self.loop.call_later(
0.1, callback, 'childof:{}'.format(op_name)
)
with self.tracer.start_active_span('root'):
self.loop.create_task(task('task1'))
self.loop.create_task(task('task2'))
stop_loop_when(self.loop,
lambda: len(self.tracer.finished_spans()) == 5)
self.loop.run_forever()
root, task1, task2, child1, child2 = self.tracer.finished_spans()
self.assertEmptySpan(root, 'root')
self.assertEmptySpan(task1, 'task1')
self.assertEmptySpan(task2, 'task2')
self.assertEmptySpan(child1, 'childof:task1')
self.assertEmptySpan(child2, 'childof:task2')
self.assertIsChildOf(task1, root)
self.assertIsChildOf(task2, root)
self.assertIsChildOf(child1, task1)
self.assertIsChildOf(child2, task2)
def test_coroutines_scheduling_task(self):
async def _task(op_name):
await asyncio.sleep(0.1)
with self.tracer.start_active_span(
operation_name=op_name,
child_of=self.tracer.active_span
):
pass
async def task(op_name):
with self.tracer.start_active_span(
operation_name=op_name,
child_of=self.tracer.active_span
):
self.loop.create_task(_task('childof:{}'.format(op_name)))
with self.tracer.start_active_span('root'):
self.loop.create_task(task('task1'))
self.loop.create_task(task('task2'))
stop_loop_when(self.loop,
lambda: len(self.tracer.finished_spans()) == 5)
self.loop.run_forever()
root, task1, task2, child1, child2 = self.tracer.finished_spans()
self.assertEmptySpan(root, 'root')
self.assertEmptySpan(task1, 'task1')
self.assertEmptySpan(task2, 'task2')
self.assertEmptySpan(child1, 'childof:task1')
self.assertEmptySpan(child2, 'childof:task2')
self.assertIsChildOf(task1, root)
self.assertIsChildOf(task2, root)
self.assertIsChildOf(child1, task1)
self.assertIsChildOf(child2, task2)
def test_recursive_scheduling_task(self):
tasks = 4
async def task(n=0):
await asyncio.sleep(0.1)
with self.tracer.start_active_span(
operation_name=str(n),
child_of=self.tracer.active_span
):
if n < tasks:
self.loop.create_task(task(n+1))
self.loop.create_task(task())
stop_loop_when(self.loop,
lambda: len(self.tracer.finished_spans()) == tasks)
self.loop.run_forever()
spans = self.tracer.finished_spans()
for i in range(tasks):
self.assertEmptySpan(spans[i], str(i))
if i == 0:
self.assertIsNone(spans[i].parent_id)
else:
self.assertIsChildOf(spans[i], spans[i-1])
def test_recursive_scheduling_with_ignoring_active_span(self):
tasks = 4
async def task(n=0):
await asyncio.sleep(0.1)
if n < tasks / 2:
with self.tracer.start_active_span(str(n)):
self.loop.create_task(task(n+1))
elif n < tasks:
with self.tracer.start_active_span(
operation_name=str(n),
ignore_active_span=True
):
self.loop.create_task(task(n+1))
self.loop.create_task(task())
stop_loop_when(self.loop,
lambda: len(self.tracer.finished_spans()) == tasks)
self.loop.run_forever()
s0, s1, s2, s3 = self.tracer.finished_spans()
self.assertEmptySpan(s0, '0')
self.assertHasNoParent(s0)
self.assertEmptySpan(s1, '1')
self.assertIsChildOf(s1, s0)
self.assertEmptySpan(s2, '2')
self.assertHasNoParent(s2)
self.assertEmptySpan(s3, '3')
self.assertHasNoParent(s3)
def test_tasks_with_no_parent_scope(self):
async def task(name):
await asyncio.sleep(0.1)
with self.tracer.start_active_span(name):
await asyncio.sleep(0.1)
async def tasks():
self.loop.create_task(task('task_1'))
with no_parent_scope():
self.loop.create_task(task('task_2'))
self.loop.create_task(task('task_3'))
with self.tracer.start_active_span('root'):
self.loop.create_task(tasks())
stop_loop_when(self.loop,
lambda: len(self.tracer.finished_spans()) == 4)
self.loop.run_forever()
root, task1, task2, task3 = self.tracer.finished_spans()
self.assertEmptySpan(root, 'root')
self.assertEmptySpan(task1, 'task_1')
self.assertIsChildOf(task1, root)
# Third task was scheduled out `no_parent_scope`.
self.assertEmptySpan(task3, 'task_3')
self.assertIsChildOf(task3, root)
# Second task "wrapped" by `no_parent_scope`.
self.assertEmptySpan(task2, 'task_2')
self.assertHasNoParent(task2)
def test_callbacks_with_no_parent_scope(self):
def callback(name):
with self.tracer.start_active_span(name):
pass
def callbacks():
self.loop.call_soon(callback, 'task_1')
with no_parent_scope():
self.loop.call_soon(callback, 'task_2')
self.loop.call_soon(callback, 'task_3')
with self.tracer.start_active_span('root'):
self.loop.call_soon(callbacks)
stop_loop_when(self.loop,
lambda: len(self.tracer.finished_spans()) == 4)
self.loop.run_forever()
root, task1, task2, task3 = self.tracer.finished_spans()
self.assertEmptySpan(root, 'root')
self.assertEmptySpan(task1, 'task_1')
self.assertIsChildOf(task1, root)
# Third task was scheduled out `no_parent_scope`.
self.assertEmptySpan(task3, 'task_3')
self.assertIsChildOf(task3, root)
# Second task "wrapped" by `no_parent_scope`.
self.assertEmptySpan(task2, 'task_2')
self.assertHasNoParent(task2)
def test_await_with_no_parent_scope(self):
async def coro(name):
with self.tracer.start_active_span(name):
pass
async def main_coro():
await coro('coro_1')
with no_parent_scope():
await coro('coro_2')
await coro('coro_3')
with self.tracer.start_active_span('root'):
self.loop.create_task(main_coro())
stop_loop_when(self.loop,
lambda: len(self.tracer.finished_spans()) == 4)
self.loop.run_forever()
root, coro1, coro2, coro3 = self.tracer.finished_spans()
self.assertEmptySpan(root, 'root')
self.assertEmptySpan(coro1, 'coro_1')
self.assertIsChildOf(coro1, root)
# second coroutine "wrapped" by `no_parent_scope`.
self.assertEmptySpan(coro2, 'coro_2')
self.assertHasNoParent(coro2)
self.assertEmptySpan(coro3, 'coro_3')
self.assertIsChildOf(coro3, root)
|
