def test_django_traced_cursor_backward_compatibility(self):
cursor = self.cursor
tracer = self.tracer
# Django integration used to have its own FetchTracedCursor 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 = FetchTracedCursor(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_metric(
'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 = FetchTracedCursor(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_metric(
'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 = FetchTracedCursor(cursor, pin, {})
def method():
pass
traced_cursor._trace_method(method, "my_name", "my_resource",
{"extra1": "value_extra1"})
span = tracer.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_metric(
"sql.rows"
) == 123, "Row count is set as a tag (for legacy django cursor replacement)"
def test_unknown_rowcount(self):
class Unknown(object):
pass
cursor = self.cursor
tracer = self.tracer
cursor.rowcount = Unknown()
pin = Pin("my_service", app="my_app", tracer=tracer, tags={"pin1": "value_pin1"})
traced_cursor = FetchTracedCursor(cursor, pin, {})
def method():
pass
traced_cursor._trace_method(method, "my_name", "my_resource", {"extra1": "value_extra1"})
span = tracer.pop()[0] # type: Span
assert span.get_metric("db.rowcount") is None
assert span.get_metric("sql.rows") is None
def test_unknown_rowcount(self):
class Unknown(object):
pass
cursor = self.cursor
tracer = self.tracer
cursor.rowcount = Unknown()
pin = Pin('my_service',
app='my_app',
tracer=tracer,
tags={'pin1': 'value_pin1'})
traced_cursor = FetchTracedCursor(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.get_metric('db.rowcount') is None
assert span.get_metric('sql.rows') is None
