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sentry.py
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sentry.py
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#
# Copyright (c) 2015-2018 Canonical, Ltd.
#
# This file is part of Talisker
# (see http://github.com/canonical-ols/talisker).
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you 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.
#
from __future__ import unicode_literals
from __future__ import print_function
from __future__ import division
from __future__ import absolute_import
from builtins import * # noqa
import ast
from collections import OrderedDict
import json
import logging
import re
import time
import zlib
import talisker
import talisker.logs
from talisker.util import (
get_rounded_ms,
module_cache,
parse_url,
sanitize_url,
)
__all__ = [
'TestSentryContext',
'configure_client',
'configure_testing',
'get_client',
'record_breadcrumb',
'report_wsgi',
'new_context',
'set_client',
]
default_processors = set([
'raven.processors.RemovePostDataProcessor',
'raven.processors.SanitizePasswordsProcessor',
'raven.processors.RemoveStackLocalsProcessor',
'raven.processors.SanitizeKeysProcessor',
])
enabled = False
try:
import raven
import raven.middleware
import raven.breadcrumbs
import raven.handlers.logging
except ImportError:
# dummy APIs that do nothing
def new_context():
pass
def record_breadcrumb(*args, **kwargs):
pass
def record_log_breadcrumb(record):
pass
def report_wsgi(environ, msg=None, **kwargs):
return
class TestSentryContext():
"""Dummy implementation."""
def __init__(self, dsn):
pass
def start(self):
pass
def stop(self):
pass
@property
def messages(self):
return []
__enter__ = start
def __exit__(self, exc_type, exc, traceback):
pass
else:
enabled = True
# sql queries and http requests are recorded as explicit breadcrumbs as
# well as logged, so ignore the log breadcrumb
raven.breadcrumbs.ignore_logger('talisker.slowqueries')
raven.breadcrumbs.ignore_logger('talisker.requests')
FILTERED_EXTRAS = {
'request_id', # do not need request_id for each log breadcrumb
'exc_type', # exc info already displayed
}
def new_context():
get_client().context.activate()
def record_breadcrumb(*args, **kwargs):
raven.breadcrumbs.record(*args, **kwargs)
# our enhanced version of the default raven support for recording
# breadcrumbs
def record_log_breadcrumb(record):
breadcrumb_handler_args = (
logging.getLogger(record.name),
record.levelno,
record.message,
record.args,
{
'extra': getattr(record, 'extra', {}),
'exc_info': record.exc_info,
'stack_info': getattr(record, 'stack_info', None)
},
)
for handler in getattr(
raven.breadcrumbs, 'special_logging_handlers', []):
if handler(*breadcrumb_handler_args):
return
handler = raven.breadcrumbs.special_logger_handlers.get(record.name)
if handler is not None and handler(*breadcrumb_handler_args):
return
def processor(data):
metadata = {
'location': '{}:{}:{}'.format(
record.pathname,
record.lineno,
getattr(record, 'funcName', ''),
),
}
extra = getattr(record, 'extra', {})
metadata.update(
(k, str(v)) for k, v in extra.items()
if k not in FILTERED_EXTRAS
)
data.update({
'message': record.getMessage(),
'category': record.name,
'level': record.levelname.lower(),
'data': metadata,
})
raven.breadcrumbs.record(processor=processor)
def report_wsgi(environ, msg=None, response_data=None, **kwargs):
"""Use raven to report error"""
sentry = get_client()
# reuse code from Sentry middleware, if a bit unpleasently
mw = raven.middleware.Sentry(None, sentry)
http_context = mw.get_http_context(environ)
sentry.http_context(http_context)
if msg is None:
return sentry.captureException(**kwargs)
else:
return sentry.captureMessage(msg, **kwargs)
class TaliskerSentryClient(raven.Client):
@property
def logger(self):
return logging.getLogger(__name__)
@logger.setter
def logger(self, value):
"""Ignore raven.clients logger"""
def __init__(self, *args, **kwargs):
ensure_talisker_config(kwargs)
super().__init__(*args, **kwargs)
def build_msg(self, event_type, *args, **kwargs):
data = super().build_msg(event_type, *args, **kwargs)
add_talisker_context(data)
return data
def set_dsn(self, dsn=None, transport=None):
super().set_dsn(dsn, transport)
log_client(self)
class DummySentryTransport(raven.transport.Transport):
"""Fake sentry transport for testing."""
scheme = ['test']
def __init__(self, *args, **kwargs):
self.messages = []
def send(self, *args, **kwargs):
# In raven<6, args = (data, headers).
# In raven 6.x args = (url, data, headers)
if len(args) == 2:
data, _ = args
elif len(args) == 3:
_, data, _ = args
else:
raise Exception(
'raven Transport.send api seems to have changed'
)
raw = json.loads(zlib.decompress(data).decode('utf8'))
# to make asserting easier, parse json strings into python strings
for k, v in list(raw['extra'].items()):
try:
val = ast.literal_eval(v)
except Exception:
pass
else:
raw['extra'][k] = val
self.messages.append(raw)
class TestSentryContext():
def __init__(self, dsn):
self.dsn = dsn
def start(self):
self.client = get_client()
self.orig_remote = self.client.remote
self.client.set_dsn(self.dsn, DummySentryTransport)
self.transport = self.client.remote.get_transport()
def stop(self):
self.client.remote = self.orig_remote
self.client._transport_cache.pop(self.dsn, None)
@property
def messages(self):
return self.transport.messages
__enter__ = start
def __exit__(self, exc_type, exc, traceback):
self.stop()
def configure_testing(dsn):
TestSentryContext(dsn).start()
_client = None
def get_client(**kwargs):
global _client
if _client is None:
_client = TaliskerSentryClient(**kwargs)
return _client
def configure_client(**kwargs):
global _client
_client = TaliskerSentryClient(**kwargs)
return _client
def set_client(client):
global _client
_client = client
return _client
def clear():
"""Clear any sentry state."""
if enabled:
raven.context._active_contexts.__dict__.clear()
client = get_client()
client.context.clear()
client.transaction.clear()
def ensure_talisker_config(kwargs):
# ensure default processors
# this is provided as a list from settings, but we need a set
# to ensure we don't duplicate
config = talisker.get_config()
processors = set(kwargs.get('processors') or [])
kwargs['processors'] = list(default_processors | processors)
# note: style clash - sentry client api is 'sanitize_keys'
sanitise_keys = kwargs.get('sanitize_keys', [])
if sanitise_keys is None: # flask integration explicitly sets None
sanitise_keys = []
kwargs['sanitize_keys'] = (
set(sanitise_keys)
| config.DEFAULT_SANITISE_KEYS
| config.sanitise_keys
)
# override it or it interferes with talisker logging
if kwargs.get('install_logging_hook'):
logging.getLogger(__name__).info(
'ignoring install_logging_hook=True in sentry config '
'- talisker manages this')
kwargs['install_logging_hook'] = False
# flask integration explictly sets options as None
if kwargs.get('release') is None:
kwargs['release'] = talisker.get_config().revision_id
# don't hook libraries by default
if kwargs.get('hook_libraries') is None:
kwargs['hook_libraries'] = []
tags = kwargs.get('tags', {})
# set from the environment
if config.unit is not None:
tags['unit'] = config.unit
if config.environment is not None:
tags['environment'] = config.environment
if config.domain is not None:
tags['domain'] = config.domain
kwargs['tags'] = tags
dsn = kwargs.get('dsn', None)
if not dsn:
kwargs['dsn'] = config.sentry_dsn
def log_client(client):
"""Safely log client creation at INFO level."""
if not client.is_enabled():
# raven already logs a *disabled* client at INFO level
return
# base_url shouldn't have secrets in, but just in case, clean it
public_dsn = client.remote.get_public_dsn()
scheme = parse_url(client.remote.base_url).scheme
url = scheme + ':' + public_dsn
clean_url = sanitize_url(url)
msg = 'configured raven DSN'
extra = {'dsn': clean_url}
config = talisker.get_config()
env_cfg = config.raw.get('SENTRY_DSN')
if env_cfg:
# make a full url look like a public dsn
clean_env = sanitize_url(re.sub(r'://(.*):.*@', r'://\1@', env_cfg))
if clean_env == clean_url:
msg += ' from SENTRY_DSN config'
extra['from_env'] = True
else:
msg += ' overriding SENTRY_DSN config'
extra['SENTRY_DSN'] = clean_env
logging.getLogger(__name__).info(msg, extra=extra)
def add_talisker_context(data):
rid = talisker.Context.request_id
if rid:
data['tags']['request_id'] = rid
data['extra'].update(talisker.logs.logging_context.flat)
user = data.get('user')
if user:
user.pop('email', None)
user.pop('username', None)
breadcrumbs = data.get('breadcrumbs', {}).get('values', [])
start_time = data['extra'].get('start_time')
if start_time is not None:
try:
start_time = float(start_time)
except ValueError:
start_time = None
sql_crumbs = []
for crumb in breadcrumbs:
if start_time:
crumb['data']['start'] = get_rounded_ms(
start_time, crumb['timestamp']
)
if crumb['category'] == 'sql':
sql_crumbs.append(crumb)
if sql_crumbs:
summary = sql_summary(sql_crumbs, start_time)
data['extra']['sql summary'] = summary
def sql_summary(sql_crumbs, start_time):
def duration(crumb):
return float(crumb['data'].get('duration', 0))
sql_crumbs.sort(key=duration, reverse=True)
sql_time = sum(duration(c) for c in sql_crumbs)
sql_summary = OrderedDict()
sql_summary['sql_count'] = len(sql_crumbs)
sql_summary['sql_time'] = sql_time
if start_time is not None:
request_time = (time.time() - start_time) * 1000
sql_summary['non_sql_time'] = request_time - sql_time
sql_summary['total_time'] = request_time
sql_summary['slowest queries'] = [
OrderedDict([
('duration', c['data']['duration']),
('query', c['data']['query'])]
)
for c in sql_crumbs[:5]
]
return sql_summary
class ProxyClientMixin(object):
"""Mixin that overrides self.client to be a property.
This allows reuse of the various raven handlers, which use a client
attribute, but have that attribute actually get the global client."""
@property
def client(self):
return get_client()
@client.setter
def client(self, client):
"""Ignore, as we should be using the global client."""
pass
# module global so we can add filters to it for celery
@module_cache
def get_log_handler():
if not enabled:
return
class TaliskerSentryLoggingHandler(
ProxyClientMixin, raven.handlers.logging.SentryHandler):
def __init__(self):
# explicitly pass client, so that the Handler doesn't try create
# it's own client
super().__init__(client=get_client())
return TaliskerSentryLoggingHandler()