def test_django_traced_cursor_backward_compatibility(self):
cursor = self.cursor
tracer = self.tracer
# Django integration used to have its own TracedCursor implementation. When we replaced such custom
# implementation with the generic dbapi traced cursor, we had to make sure to add the tag 'sql.rows' that was
# set by the legacy replaced implementation.
cursor.rowcount = 123
pin = Pin('my_service', app='my_app', tracer=tracer, tags={'pin1': 'value_pin1'})
traced_cursor = TracedCursor(cursor, pin)
def method():
pass
traced_cursor._trace_method(method, 'my_name', 'my_resource', {'extra1': 'value_extra1'})
span = tracer.writer.pop()[0] # type: Span
# Row count
assert span.get_metric('db.rowcount') == 123, 'Row count is set as a metric'
assert span.get_tag('sql.rows') == '123', 'Row count is set as a tag (for legacy django cursor replacement)'
def test_span_info(self):
cursor = self.cursor
tracer = self.tracer
cursor.rowcount = 123
pin = Pin('my_service', app='my_app', tracer=tracer, tags={'pin1': 'value_pin1'})
traced_cursor = TracedCursor(cursor, pin)
def method():
pass
traced_cursor._trace_method(method, 'my_name', 'my_resource', {'extra1': 'value_extra1'})
span = tracer.writer.pop()[0] # type: Span
assert span.meta['pin1'] == 'value_pin1', 'Pin tags are preserved'
assert span.meta['extra1'] == 'value_extra1', 'Extra tags are merged into pin tags'
assert span.name == 'my_name', 'Span name is respected'
assert span.service == 'my_service', 'Service from pin'
assert span.resource == 'my_resource', 'Resource is respected'
assert span.span_type == 'sql', 'Span has the correct span type'
# Row count
assert span.get_metric('db.rowcount') == 123, 'Row count is set as a metric'
assert span.get_tag('sql.rows') == '123', 'Row count is set as a tag (for legacy django cursor replacement)'