def test_partial_flush_too_few(self): """ When calling `Context.get` When partial flushing is enabled When we do not have enough finished spans to flush We return no spans """ tracer = get_dummy_tracer() ctx = Context() # Create a root span with 5 children, all of the children are finished, the root is not root = Span(tracer=tracer, name='root') ctx.add_span(root) for i in range(5): child = Span(tracer=tracer, name='child_{}'.format(i), trace_id=root.trace_id, parent_id=root.span_id) child._parent = root child.finished = True ctx.add_span(child) ctx.close_span(child) # Test with having 1 too few spans for partial flush with self.override_partial_flush(ctx, enabled=True, min_spans=6): trace, sampled = ctx.get() self.assertIsNone(trace) self.assertIsNone(sampled) self.assertEqual(len(ctx._trace), 6) self.assertEqual( set(['root', 'child_0', 'child_1', 'child_2', 'child_3', 'child_4']), set([span.name for span in ctx._trace]) )
def test_get_trace_empty(self): # it should return None if the Context is not finished ctx = Context() span = Span(tracer=None, name='fake_span') ctx.add_span(span) trace, sampled = ctx.get() assert trace is None assert sampled is None
def test_get_trace_empty(self): # it should return None if the Context is not finished ctx = Context() span = Span(tracer=None, name='fake_span') ctx.add_span(span) trace, sampled = ctx.get() ok_(trace is None) ok_(sampled is None)
def test_context_sampled(self): # a context is sampled if the spans are sampled ctx = Context() span = Span(tracer=None, name='fake_span') ctx.add_span(span) span.finish() trace, sampled = ctx.get() assert sampled is True assert ctx.sampling_priority is None
def test_partial_flush_too_many(self): """ When calling `Context.get` When partial flushing is enabled When we have more than the minimum number of spans needed to flush We return the finished spans """ tracer = get_dummy_tracer() ctx = Context() # Create a root span with 5 children, all of the children are finished, the root is not root = Span(tracer=tracer, name='root') ctx.add_span(root) for i in range(5): child = Span(tracer=tracer, name='child_{}'.format(i), trace_id=root.trace_id, parent_id=root.span_id) child._parent = root child._finished = True ctx.add_span(child) ctx.close_span(child) with self.override_partial_flush(ctx, enabled=True, min_spans=1): trace, sampled = ctx.get() self.assertIsNotNone(trace) self.assertIsNotNone(sampled) self.assertEqual(len(trace), 5) self.assertEqual( set(['child_0', 'child_1', 'child_2', 'child_3', 'child_4']), set([span.name for span in trace])) # Ensure we clear/reset internal stats as expected self.assertEqual(ctx._finished_spans, 0) self.assertEqual(ctx._trace, [root]) with self.override_partial_flush(ctx, enabled=True, min_spans=5): trace, sampled = ctx.get() self.assertIsNone(trace) self.assertIsNone(sampled)
def test_get_trace(self): # it should return the internal trace structure # if the context is finished ctx = Context() span = Span(tracer=None, name='fake_span') ctx.add_span(span) span.finish() trace, sampled = ctx.get() assert [span] == trace assert sampled is True # the context should be empty assert 0 == len(ctx._trace) assert ctx._current_span is None
def test_context_priority(self): # a context is sampled if the spans are sampled ctx = Context() for priority in [USER_REJECT, AUTO_REJECT, AUTO_KEEP, USER_KEEP, None, 999]: ctx.sampling_priority = priority span = Span(tracer=None, name=('fake_span_%s' % repr(priority))) ctx.add_span(span) span.finish() # It's "normal" to have sampled be true even when priority sampling is # set to 0 or -1. It would stay false even even with priority set to 2. # The only criteria to send (or not) the spans to the agent should be # this "sampled" attribute, as it's tightly related to the trace weight. assert priority == ctx.sampling_priority trace, sampled = ctx.get() assert sampled is True, 'priority has no impact on sampled status'
def test_get_trace(self): # it should return the internal trace structure # if the context is finished ctx = Context() span = Span(tracer=None, name='fake_span') ctx.add_span(span) ctx.close_span(span) trace, sampled = ctx.get() eq_(1, len(trace)) eq_(span, trace[0]) ok_(sampled is True) # the context should be empty eq_(0, len(ctx._trace)) eq_(0, ctx._finished_spans) ok_(ctx._current_span is None) ok_(ctx._sampled is False)
def test_get_report_hostname_default(self, get_hostname): get_hostname.return_value = 'test-hostname' # Create a context and add a span and finish it ctx = Context() span = Span(tracer=None, name='fake_span') ctx.add_span(span) span.finish() # Assert that we have not added the tag to the span yet assert span.get_tag(HOSTNAME_KEY) is None # Assert that retrieving the trace does not set the tag trace, _ = ctx.get() assert trace[0].get_tag(HOSTNAME_KEY) is None assert span.get_tag(HOSTNAME_KEY) is None
def test_get_trace(self): # it should return the internal trace structure # if the context is finished ctx = Context() span = Span(tracer=None, name='fake_span') ctx.add_span(span) ctx.close_span(span) trace, sampled = ctx.get() eq_(1, len(trace)) eq_(span, trace[0]) ok_(sampled is True) # the context should be empty eq_(0, len(ctx._trace)) eq_(0, ctx._finished_spans) ok_(ctx._current_span is None) ok_(ctx._sampled is True)
def test_get_report_hostname_disabled(self, get_hostname): get_hostname.return_value = 'test-hostname' with self.override_global_config(dict(report_hostname=False)): # Create a context and add a span and finish it ctx = Context() span = Span(tracer=None, name='fake_span') ctx.add_span(span) span.finish() # Assert that we have not added the tag to the span yet assert span.get_tag(HOSTNAME_KEY) is None # Assert that retrieving the trace does not set the tag trace, _ = ctx.get() assert trace[0].get_tag(HOSTNAME_KEY) is None assert span.get_tag(HOSTNAME_KEY) is None
def test_partial_flush_remaining(self): """ When calling `Context.get` When partial flushing is enabled When we have some unfinished spans We keep the unfinished spans around """ tracer = get_dummy_tracer() ctx = Context() # Create a root span with 5 children, all of the children are finished, the root is not root = Span(tracer=tracer, name='root') ctx.add_span(root) for i in range(10): child = Span(tracer=tracer, name='child_{}'.format(i), trace_id=root.trace_id, parent_id=root.span_id) child._parent = root ctx.add_span(child) # CLose the first 5 only if i < 5: child._finished = True ctx.close_span(child) with self.override_partial_flush(ctx, enabled=True, min_spans=5): trace, sampled = ctx.get() # Assert partially flushed spans self.assertTrue(len(trace), 5) self.assertIsNotNone(sampled) self.assertEqual( set(['child_0', 'child_1', 'child_2', 'child_3', 'child_4']), set([span.name for span in trace])) # Assert remaining unclosed spans self.assertEqual(len(ctx._trace), 6) self.assertEqual(ctx._finished_spans, 0) self.assertEqual( set([ 'root', 'child_5', 'child_6', 'child_7', 'child_8', 'child_9' ]), set([span.name for span in ctx._trace]), )