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from __future__ import print_function
import random
import gevent
from opentracing.mocktracer import MockTracer
from opentracing.scope_managers.gevent import GeventScopeManager
from ..testcase import OpenTracingTestCase
from ..utils import get_logger
random.seed()
logger = get_logger(__name__)
class TestGevent(OpenTracingTestCase):
def setUp(self):
self.tracer = MockTracer(GeventScopeManager())
def test_main(self):
def main_task():
with self.tracer.start_active_span('parent'):
tasks = self.submit_callbacks()
gevent.joinall(tasks)
gevent.spawn(main_task)
gevent.wait(timeout=5.0)
spans = self.tracer.finished_spans()
self.assertEquals(len(spans), 4)
self.assertNamesEqual(spans, ['task', 'task', 'task', 'parent'])
for i in range(3):
self.assertSameTrace(spans[i], spans[-1])
self.assertIsChildOf(spans[i], spans[-1])
def task(self, interval, parent_span):
logger.info('Starting task')
with self.tracer.scope_manager.activate(parent_span, False):
with self.tracer.start_active_span('task'):
gevent.sleep(interval)
def submit_callbacks(self):
parent_span = self.tracer.scope_manager.active.span
tasks = []
for i in range(3):
interval = 0.1 + random.randint(200, 500) * 0.001
t = gevent.spawn(self.task, interval, parent_span)
tasks.append(t)
return tasks
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