forked from MirrorHub/synapse
00b24aa545
This modifies the configuration of structured logging to be usable from the standard Python logging configuration. This also separates the formatting of logs from the transport allowing JSON logs to files or standard logs to sockets.
121 lines
3.7 KiB
Python
121 lines
3.7 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2019 The Matrix.org Foundation C.I.C.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import json
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import logging
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from io import StringIO
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from synapse.logging._terse_json import JsonFormatter, TerseJsonFormatter
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from tests.logging import LoggerCleanupMixin
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from tests.unittest import TestCase
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class TerseJsonTestCase(LoggerCleanupMixin, TestCase):
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def test_terse_json_output(self):
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"""
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The Terse JSON formatter converts log messages to JSON.
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"""
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output = StringIO()
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handler = logging.StreamHandler(output)
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handler.setFormatter(TerseJsonFormatter())
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logger = self.get_logger(handler)
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logger.info("Hello there, %s!", "wally")
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# One log message, with a single trailing newline.
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data = output.getvalue()
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logs = data.splitlines()
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self.assertEqual(len(logs), 1)
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self.assertEqual(data.count("\n"), 1)
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log = json.loads(logs[0])
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# The terse logger should give us these keys.
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expected_log_keys = [
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"log",
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"time",
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"level",
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"namespace",
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]
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self.assertCountEqual(log.keys(), expected_log_keys)
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self.assertEqual(log["log"], "Hello there, wally!")
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def test_extra_data(self):
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"""
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Additional information can be included in the structured logging.
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"""
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output = StringIO()
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handler = logging.StreamHandler(output)
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handler.setFormatter(TerseJsonFormatter())
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logger = self.get_logger(handler)
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logger.info(
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"Hello there, %s!", "wally", extra={"foo": "bar", "int": 3, "bool": True}
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)
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# One log message, with a single trailing newline.
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data = output.getvalue()
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logs = data.splitlines()
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self.assertEqual(len(logs), 1)
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self.assertEqual(data.count("\n"), 1)
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log = json.loads(logs[0])
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# The terse logger should give us these keys.
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expected_log_keys = [
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"log",
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"time",
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"level",
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"namespace",
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# The additional keys given via extra.
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"foo",
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"int",
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"bool",
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]
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self.assertCountEqual(log.keys(), expected_log_keys)
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# Check the values of the extra fields.
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self.assertEqual(log["foo"], "bar")
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self.assertEqual(log["int"], 3)
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self.assertIs(log["bool"], True)
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def test_json_output(self):
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"""
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The Terse JSON formatter converts log messages to JSON.
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"""
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output = StringIO()
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handler = logging.StreamHandler(output)
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handler.setFormatter(JsonFormatter())
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logger = self.get_logger(handler)
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logger.info("Hello there, %s!", "wally")
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# One log message, with a single trailing newline.
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data = output.getvalue()
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logs = data.splitlines()
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self.assertEqual(len(logs), 1)
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self.assertEqual(data.count("\n"), 1)
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log = json.loads(logs[0])
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# The terse logger should give us these keys.
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expected_log_keys = [
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"log",
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"level",
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"namespace",
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]
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self.assertCountEqual(log.keys(), expected_log_keys)
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self.assertEqual(log["log"], "Hello there, wally!")
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