test_statsd.py

# Copyright (c) 2016 Uber Technologies, Inc.
#
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# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# THE SOFTWARE.

from __future__ import absolute_import

import pytest
from mock import MagicMock

from tchannel.errors import TChannelError
from tchannel.errors import TimeoutError
from tchannel.messages import ErrorCode
from tchannel.statsd import StatsdHook
from tchannel.tornado import Request
from tchannel.tornado import Response
from tchannel.tornado.response import StatusCode


@pytest.fixture
def req():
    return Request(
        endpoint="endpoint1",
        service="test",
    )


@pytest.fixture
def statsd_hook():
    statsd = MagicMock()
    return StatsdHook(
        statsd=statsd
    )


def test_before_send_request(statsd_hook, req):
    statsd_hook.before_send_request(req)
    statsd_hook._statsd.count.assert_called_with(
        "tchannel.outbound.calls.sent.no-service.test.endpoint1", 1
    )


def test_after_receive_response(statsd_hook, req):
    response = Response(code=StatusCode.ok)
    statsd_hook.after_receive_response(req, response)
    statsd_hook._statsd.count.assert_called_with(
        "tchannel.outbound.calls.success.no-service.test.endpoint1", 1
    )

    response = Response(code=StatusCode.error)
    statsd_hook.after_receive_response(req, response)
    statsd_hook._statsd.count.assert_called_with(
        "tchannel.outbound.calls.app-errors.no-service.test.endpoint1", 1
    )


def test_after_receive_system_error(statsd_hook, req):
    error = TChannelError.from_code(ErrorCode.bad_request)
    statsd_hook.after_receive_system_error(req, error)
    statsd_hook._statsd.count.assert_called_with(
        "tchannel.outbound.calls.system-errors.no-service." +
        "test.endpoint1.bad-request", 1
    )


def test_after_receive_system_error_per_attempt(statsd_hook, req):
    error = TChannelError.from_code(code=ErrorCode.bad_request)
    statsd_hook.after_receive_system_error_per_attempt(req, error)
    statsd_hook._statsd.count.assert_called_with(
        "tchannel.outbound.calls.per-attempt.system-errors.no-service." +
        "test.endpoint1.bad-request", 1
    )


def test_on_operational_error(statsd_hook, req):
    error = TimeoutError()
    statsd_hook.on_operational_error(req, error)
    statsd_hook._statsd.count.assert_called_with(
        "tchannel.outbound.calls.operational-errors.no-service." +
        "test.endpoint1.timeout", 1
    )


def test_on_operational_error_per_attempt(statsd_hook, req):
    error = TimeoutError()
    statsd_hook.on_operational_error_per_attempt(req, error)
    statsd_hook._statsd.count.assert_called_with(
        "tchannel.outbound.calls.per-attempt.operational-errors.no-service." +
        "test.endpoint1.timeout", 1
    )