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# -*- coding: utf-8 -*-
# Copyright 2019 The Matrix.org Foundation C.I.C.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import json
import logging
from io import StringIO
from synapse.logging._terse_json import JsonFormatter, TerseJsonFormatter
from tests.logging import LoggerCleanupMixin
from tests.unittest import TestCase
class TerseJsonTestCase(LoggerCleanupMixin, TestCase):
def test_terse_json_output(self):
"""
The Terse JSON formatter converts log messages to JSON.
"""
output = StringIO()
handler = logging.StreamHandler(output)
handler.setFormatter(TerseJsonFormatter())
logger = self.get_logger(handler)
logger.info("Hello there, %s!", "wally")
# One log message, with a single trailing newline.
data = output.getvalue()
logs = data.splitlines()
self.assertEqual(len(logs), 1)
self.assertEqual(data.count("\n"), 1)
log = json.loads(logs[0])
# The terse logger should give us these keys.
expected_log_keys = [
"log",
"time",
"level",
"namespace",
]
self.assertCountEqual(log.keys(), expected_log_keys)
self.assertEqual(log["log"], "Hello there, wally!")
def test_extra_data(self):
"""
Additional information can be included in the structured logging.
"""
output = StringIO()
handler = logging.StreamHandler(output)
handler.setFormatter(TerseJsonFormatter())
logger = self.get_logger(handler)
logger.info(
"Hello there, %s!", "wally", extra={"foo": "bar", "int": 3, "bool": True}
)
# One log message, with a single trailing newline.
data = output.getvalue()
logs = data.splitlines()
self.assertEqual(len(logs), 1)
self.assertEqual(data.count("\n"), 1)
log = json.loads(logs[0])
# The terse logger should give us these keys.
expected_log_keys = [
"log",
"time",
"level",
"namespace",
# The additional keys given via extra.
"foo",
"int",
"bool",
]
self.assertCountEqual(log.keys(), expected_log_keys)
# Check the values of the extra fields.
self.assertEqual(log["foo"], "bar")
self.assertEqual(log["int"], 3)
self.assertIs(log["bool"], True)
def test_json_output(self):
"""
The Terse JSON formatter converts log messages to JSON.
"""
output = StringIO()
handler = logging.StreamHandler(output)
handler.setFormatter(JsonFormatter())
logger = self.get_logger(handler)
logger.info("Hello there, %s!", "wally")
# One log message, with a single trailing newline.
data = output.getvalue()
logs = data.splitlines()
self.assertEqual(len(logs), 1)
self.assertEqual(data.count("\n"), 1)
log = json.loads(logs[0])
# The terse logger should give us these keys.
expected_log_keys = [
"log",
"level",
"namespace",
]
self.assertCountEqual(log.keys(), expected_log_keys)
self.assertEqual(log["log"], "Hello there, wally!")
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