# coding: utf-8
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from datetime import timedelta as td
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import json
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from unittest.mock import patch
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from django.utils.timezone import now
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from hc.api.models import Channel, Check, Notification
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from hc.test import BaseTestCase
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from requests.exceptions import ConnectionError, Timeout
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from django.test.utils import override_settings
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class NotifyWebhookTestCase(BaseTestCase):
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def _setup_data(self, value, status="down", email_verified=True):
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self.check = Check(project=self.project)
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self.check.status = status
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self.check.last_ping = now() - td(minutes=61)
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self.check.save()
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self.channel = Channel(project=self.project)
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self.channel.kind = "webhook"
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self.channel.value = value
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self.channel.email_verified = email_verified
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self.channel.save()
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self.channel.checks.add(self.check)
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@patch("hc.api.transports.requests.request")
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def test_webhook(self, mock_get):
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definition = {
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"method_down": "GET",
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"url_down": "http://example",
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"body_down": "",
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"headers_down": {},
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}
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self._setup_data(json.dumps(definition))
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mock_get.return_value.status_code = 200
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self.channel.notify(self.check)
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mock_get.assert_called_with(
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"get",
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"http://example",
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headers={"User-Agent": "healthchecks.io"},
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timeout=10,
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)
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@patch("hc.api.transports.requests.request", side_effect=Timeout)
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def test_webhooks_handle_timeouts(self, mock_get):
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definition = {
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"method_down": "GET",
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"url_down": "http://example",
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"body_down": "",
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"headers_down": {},
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}
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self._setup_data(json.dumps(definition))
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self.channel.notify(self.check)
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# The transport should have retried 3 times
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self.assertEqual(mock_get.call_count, 3)
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n = Notification.objects.get()
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self.assertEqual(n.error, "Connection timed out")
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self.channel.refresh_from_db()
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self.assertEqual(self.channel.last_error, "Connection timed out")
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@patch("hc.api.transports.requests.request", side_effect=ConnectionError)
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def test_webhooks_handle_connection_errors(self, mock_get):
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definition = {
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"method_down": "GET",
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"url_down": "http://example",
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"body_down": "",
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"headers_down": {},
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}
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self._setup_data(json.dumps(definition))
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self.channel.notify(self.check)
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# The transport should have retried 3 times
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self.assertEqual(mock_get.call_count, 3)
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n = Notification.objects.get()
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self.assertEqual(n.error, "Connection failed")
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@patch("hc.api.transports.requests.request")
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def test_webhooks_handle_500(self, mock_get):
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definition = {
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"method_down": "GET",
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"url_down": "http://example",
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"body_down": "",
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"headers_down": {},
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}
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self._setup_data(json.dumps(definition))
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mock_get.return_value.status_code = 500
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self.channel.notify(self.check)
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# The transport should have retried 3 times
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self.assertEqual(mock_get.call_count, 3)
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n = Notification.objects.get()
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self.assertEqual(n.error, "Received status code 500")
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@patch("hc.api.transports.requests.request", side_effect=Timeout)
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def test_webhooks_dont_retry_when_sending_test_notifications(self, mock_get):
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definition = {
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"method_down": "GET",
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"url_down": "http://example",
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"body_down": "",
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"headers_down": {},
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}
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self._setup_data(json.dumps(definition))
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self.channel.notify(self.check, is_test=True)
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# is_test flag is set, the transport should not retry:
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self.assertEqual(mock_get.call_count, 1)
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n = Notification.objects.get()
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self.assertEqual(n.error, "Connection timed out")
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@patch("hc.api.transports.requests.request")
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def test_webhooks_support_variables(self, mock_get):
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definition = {
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"method_down": "GET",
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"url_down": "http://host/$CODE/$STATUS/$TAG1/$TAG2/?name=$NAME",
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"body_down": "",
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"headers_down": {},
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}
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self._setup_data(json.dumps(definition))
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self.check.name = "Hello World"
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self.check.tags = "foo bar"
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self.check.save()
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self.channel.notify(self.check)
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url = "http://host/%s/down/foo/bar/?name=Hello%%20World" % self.check.code
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args, kwargs = mock_get.call_args
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self.assertEqual(args[0], "get")
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self.assertEqual(args[1], url)
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self.assertEqual(kwargs["headers"], {"User-Agent": "healthchecks.io"})
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self.assertEqual(kwargs["timeout"], 10)
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@patch("hc.api.transports.requests.request")
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def test_webhooks_handle_variable_variables(self, mock_get):
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definition = {
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"method_down": "GET",
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"url_down": "http://host/$$NAMETAG1",
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"body_down": "",
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"headers_down": {},
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}
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self._setup_data(json.dumps(definition))
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self.check.tags = "foo bar"
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self.check.save()
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self.channel.notify(self.check)
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# $$NAMETAG1 should *not* get transformed to "foo"
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args, kwargs = mock_get.call_args
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self.assertEqual(args[1], "http://host/$TAG1")
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@patch("hc.api.transports.requests.request")
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def test_webhooks_support_post(self, mock_request):
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definition = {
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"method_down": "POST",
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"url_down": "http://example.com",
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"body_down": "The Time Is $NOW",
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"headers_down": {},
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}
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self._setup_data(json.dumps(definition))
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self.check.save()
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self.channel.notify(self.check)
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args, kwargs = mock_request.call_args
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self.assertEqual(args[0], "post")
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self.assertEqual(args[1], "http://example.com")
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# spaces should not have been urlencoded:
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payload = kwargs["data"].decode()
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self.assertTrue(payload.startswith("The Time Is 2"))
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@patch("hc.api.transports.requests.request")
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def test_webhooks_dollarsign_escaping(self, mock_get):
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# If name or tag contains what looks like a variable reference,
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# that should be left alone:
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definition = {
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"method_down": "GET",
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"url_down": "http://host/$NAME",
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"body_down": "",
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"headers_down": {},
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}
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self._setup_data(json.dumps(definition))
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self.check.name = "$TAG1"
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self.check.tags = "foo"
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self.check.save()
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self.channel.notify(self.check)
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url = "http://host/%24TAG1"
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mock_get.assert_called_with(
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"get", url, headers={"User-Agent": "healthchecks.io"}, timeout=10
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)
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@patch("hc.api.transports.requests.request")
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def test_webhooks_handle_up_events(self, mock_get):
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definition = {
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"method_up": "GET",
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"url_up": "http://bar",
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"body_up": "",
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"headers_up": {},
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}
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self._setup_data(json.dumps(definition), status="up")
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self.channel.notify(self.check)
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mock_get.assert_called_with(
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"get", "http://bar", headers={"User-Agent": "healthchecks.io"}, timeout=10
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)
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@patch("hc.api.transports.requests.request")
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def test_webhooks_handle_noop_up_events(self, mock_get):
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definition = {
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"method_up": "GET",
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"url_up": "",
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"body_up": "",
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"headers_up": {},
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}
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self._setup_data(json.dumps(definition), status="up")
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self.channel.notify(self.check)
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self.assertFalse(mock_get.called)
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self.assertEqual(Notification.objects.count(), 0)
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@patch("hc.api.transports.requests.request")
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def test_webhooks_handle_unicode_post_body(self, mock_request):
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definition = {
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"method_down": "POST",
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"url_down": "http://foo.com",
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"body_down": "(╯°□°)╯︵ ┻━┻",
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"headers_down": {},
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}
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self._setup_data(json.dumps(definition))
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self.check.save()
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self.channel.notify(self.check)
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args, kwargs = mock_request.call_args
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# unicode should be encoded into utf-8
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self.assertIsInstance(kwargs["data"], bytes)
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@patch("hc.api.transports.requests.request")
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def test_webhooks_handle_post_headers(self, mock_request):
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definition = {
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"method_down": "POST",
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"url_down": "http://foo.com",
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"body_down": "data",
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"headers_down": {"Content-Type": "application/json"},
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}
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self._setup_data(json.dumps(definition))
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self.channel.notify(self.check)
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headers = {"User-Agent": "healthchecks.io", "Content-Type": "application/json"}
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mock_request.assert_called_with(
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"post", "http://foo.com", data=b"data", headers=headers, timeout=10
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)
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@patch("hc.api.transports.requests.request")
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def test_webhooks_handle_get_headers(self, mock_request):
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definition = {
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"method_down": "GET",
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"url_down": "http://foo.com",
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"body_down": "",
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"headers_down": {"Content-Type": "application/json"},
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}
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self._setup_data(json.dumps(definition))
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self.channel.notify(self.check)
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headers = {"User-Agent": "healthchecks.io", "Content-Type": "application/json"}
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mock_request.assert_called_with(
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"get", "http://foo.com", headers=headers, timeout=10
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)
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@patch("hc.api.transports.requests.request")
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def test_webhooks_allow_user_agent_override(self, mock_request):
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definition = {
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"method_down": "GET",
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"url_down": "http://foo.com",
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"body_down": "",
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"headers_down": {"User-Agent": "My-Agent"},
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}
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self._setup_data(json.dumps(definition))
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self.channel.notify(self.check)
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headers = {"User-Agent": "My-Agent"}
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mock_request.assert_called_with(
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"get", "http://foo.com", headers=headers, timeout=10
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)
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@patch("hc.api.transports.requests.request")
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def test_webhooks_support_variables_in_headers(self, mock_request):
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definition = {
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"method_down": "GET",
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"url_down": "http://foo.com",
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"body_down": "",
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"headers_down": {"X-Message": "$NAME is DOWN"},
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}
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self._setup_data(json.dumps(definition))
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self.check.name = "Foo"
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self.check.save()
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self.channel.notify(self.check)
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headers = {"User-Agent": "healthchecks.io", "X-Message": "Foo is DOWN"}
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mock_request.assert_called_with(
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"get", "http://foo.com", headers=headers, timeout=10
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)
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@override_settings(WEBHOOKS_ENABLED=False)
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def test_it_requires_webhooks_enabled(self):
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definition = {
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"method_down": "GET",
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"url_down": "http://example",
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"body_down": "",
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"headers_down": {},
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}
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self._setup_data(json.dumps(definition))
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self.channel.notify(self.check)
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n = Notification.objects.get()
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self.assertEqual(n.error, "Webhook notifications are not enabled.")
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@patch("hc.api.transports.requests.request")
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def test_webhooks_handle_non_ascii_in_headers(self, mock_request):
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definition = {
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"method_down": "GET",
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"url_down": "http://foo.com",
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"headers_down": {"X-Foo": "bār"},
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"body_down": "",
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}
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self._setup_data(json.dumps(definition))
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self.check.save()
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self.channel.notify(self.check)
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args, kwargs = mock_request.call_args
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self.assertEqual(kwargs["headers"]["X-Foo"], "bār")
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@patch("hc.api.transports.requests.request")
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def test_webhooks_handle_latin1_in_headers(self, mock_request):
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definition = {
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"method_down": "GET",
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"url_down": "http://foo.com",
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"headers_down": {"X-Foo": "½"},
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"body_down": "",
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}
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self._setup_data(json.dumps(definition))
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self.check.save()
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self.channel.notify(self.check)
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args, kwargs = mock_request.call_args
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self.assertEqual(kwargs["headers"]["X-Foo"], "½")
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