mirror of https://github.com/zulip/zulip.git
330 lines
15 KiB
Python
330 lines
15 KiB
Python
from __future__ import absolute_import
|
|
|
|
from django.conf import settings
|
|
from zerver.lib.response import json_error
|
|
from django.db import connection
|
|
from zerver.lib.utils import statsd
|
|
from zerver.lib.queue import queue_json_publish
|
|
from zerver.lib.cache import get_memcached_time, get_memcached_requests
|
|
from zerver.lib.bugdown import get_bugdown_time, get_bugdown_requests
|
|
from zerver.models import flush_per_request_caches
|
|
from zerver.exceptions import RateLimited
|
|
from django.contrib.sessions.middleware import SessionMiddleware
|
|
from django.views.csrf import csrf_failure as html_csrf_failure
|
|
from django.utils.cache import patch_vary_headers
|
|
from django.utils.http import cookie_date
|
|
|
|
import logging
|
|
import time
|
|
import cProfile
|
|
import traceback
|
|
|
|
logger = logging.getLogger('zulip.requests')
|
|
|
|
def record_request_stop_data(log_data):
|
|
log_data['time_stopped'] = time.time()
|
|
log_data['memcached_time_stopped'] = get_memcached_time()
|
|
log_data['memcached_requests_stopped'] = get_memcached_requests()
|
|
log_data['bugdown_time_stopped'] = get_bugdown_time()
|
|
log_data['bugdown_requests_stopped'] = get_bugdown_requests()
|
|
if settings.PROFILE_ALL_REQUESTS:
|
|
log_data["prof"].disable()
|
|
|
|
def async_request_stop(request):
|
|
record_request_stop_data(request._log_data)
|
|
|
|
def record_request_restart_data(log_data):
|
|
if settings.PROFILE_ALL_REQUESTS:
|
|
log_data["prof"].enable()
|
|
log_data['time_restarted'] = time.time()
|
|
log_data['memcached_time_restarted'] = get_memcached_time()
|
|
log_data['memcached_requests_restarted'] = get_memcached_requests()
|
|
log_data['bugdown_time_restarted'] = get_bugdown_time()
|
|
log_data['bugdown_requests_restarted'] = get_bugdown_requests()
|
|
|
|
def async_request_restart(request):
|
|
if "time_restarted" in request._log_data:
|
|
# Don't destroy data when being called from
|
|
# finish_current_handler
|
|
return
|
|
record_request_restart_data(request._log_data)
|
|
|
|
def record_request_start_data(log_data):
|
|
if settings.PROFILE_ALL_REQUESTS:
|
|
log_data["prof"] = cProfile.Profile()
|
|
log_data["prof"].enable()
|
|
|
|
log_data['time_started'] = time.time()
|
|
log_data['memcached_time_start'] = get_memcached_time()
|
|
log_data['memcached_requests_start'] = get_memcached_requests()
|
|
log_data['bugdown_time_start'] = get_bugdown_time()
|
|
log_data['bugdown_requests_start'] = get_bugdown_requests()
|
|
|
|
def timedelta_ms(timedelta):
|
|
return timedelta * 1000
|
|
|
|
def format_timedelta(timedelta):
|
|
if (timedelta >= 1):
|
|
return "%.1fs" % (timedelta)
|
|
return "%.0fms" % (timedelta_ms(timedelta),)
|
|
|
|
def is_slow_query(time_delta, path):
|
|
if time_delta < 1.2:
|
|
return False
|
|
is_exempt = \
|
|
path in ["/activity", "/json/report_error",
|
|
"/api/v1/deployments/report_error"] \
|
|
or path.startswith("/realm_activity/") \
|
|
or path.startswith("/user_activity/")
|
|
if is_exempt:
|
|
return time_delta >= 5
|
|
if 'webathena_kerberos' in path:
|
|
return time_delta >= 10
|
|
return True
|
|
|
|
def write_log_line(log_data, path, method, remote_ip, email, client_name,
|
|
status_code=200, error_content=''):
|
|
# For statsd timer name
|
|
if path == '/':
|
|
statsd_path = 'webreq'
|
|
else:
|
|
statsd_path = u"webreq.%s" % (path[1:].replace('/', '.'),)
|
|
# Remove non-ascii chars from path (there should be none, if there are it's
|
|
# because someone manually entered a nonexistant path), as UTF-8 chars make
|
|
# statsd sad when it sends the key name over the socket
|
|
statsd_path = statsd_path.encode('ascii', errors='ignore')
|
|
blacklisted_requests = ['do_confirm', 'accounts.login.openid', 'send_confirm',
|
|
'eventslast_event_id', 'webreq.content', 'avatar', 'user_uploads',
|
|
'password.reset', 'static', 'json.bots', 'json.users', 'json.streams',
|
|
'accounts.unsubscribe', 'apple-touch-icon', 'emoji', 'json.bots',
|
|
'upload_file', 'realm_activity', 'user_activity']
|
|
suppress_statsd = any((blacklisted in statsd_path for blacklisted in blacklisted_requests))
|
|
|
|
time_delta = -1
|
|
# A time duration of -1 means the StartLogRequests middleware
|
|
# didn't run for some reason
|
|
optional_orig_delta = ""
|
|
if 'time_started' in log_data:
|
|
time_delta = time.time() - log_data['time_started']
|
|
if 'time_stopped' in log_data:
|
|
orig_time_delta = time_delta
|
|
time_delta = ((log_data['time_stopped'] - log_data['time_started']) +
|
|
(time.time() - log_data['time_restarted']))
|
|
optional_orig_delta = " (lp: %s)" % (format_timedelta(orig_time_delta),)
|
|
memcached_output = ""
|
|
if 'memcached_time_start' in log_data:
|
|
memcached_time_delta = get_memcached_time() - log_data['memcached_time_start']
|
|
memcached_count_delta = get_memcached_requests() - log_data['memcached_requests_start']
|
|
if 'memcached_requests_stopped' in log_data:
|
|
# (now - restarted) + (stopped - start) = (now - start) + (stopped - restarted)
|
|
memcached_time_delta += (log_data['memcached_time_stopped'] -
|
|
log_data['memcached_time_restarted'])
|
|
memcached_count_delta += (log_data['memcached_requests_stopped'] -
|
|
log_data['memcached_requests_restarted'])
|
|
|
|
if (memcached_time_delta > 0.005):
|
|
memcached_output = " (mem: %s/%s)" % (format_timedelta(memcached_time_delta),
|
|
memcached_count_delta)
|
|
|
|
if not suppress_statsd:
|
|
statsd.timing("%s.memcached.time" % (statsd_path,), timedelta_ms(memcached_time_delta))
|
|
statsd.incr("%s.memcached.querycount" % (statsd_path,), memcached_count_delta)
|
|
|
|
startup_output = ""
|
|
if 'startup_time_delta' in log_data and log_data["startup_time_delta"] > 0.005:
|
|
startup_output = " (+start: %s)" % (format_timedelta(log_data["startup_time_delta"]))
|
|
|
|
bugdown_output = ""
|
|
if 'bugdown_time_start' in log_data:
|
|
bugdown_time_delta = get_bugdown_time() - log_data['bugdown_time_start']
|
|
bugdown_count_delta = get_bugdown_requests() - log_data['bugdown_requests_start']
|
|
if 'bugdown_requests_stopped' in log_data:
|
|
# (now - restarted) + (stopped - start) = (now - start) + (stopped - restarted)
|
|
bugdown_time_delta += (log_data['bugdown_time_stopped'] -
|
|
log_data['bugdown_time_restarted'])
|
|
bugdown_count_delta += (log_data['bugdown_requests_stopped'] -
|
|
log_data['bugdown_requests_restarted'])
|
|
|
|
if (bugdown_time_delta > 0.005):
|
|
bugdown_output = " (md: %s/%s)" % (format_timedelta(bugdown_time_delta),
|
|
bugdown_count_delta)
|
|
|
|
if not suppress_statsd:
|
|
statsd.timing("%s.markdown.time" % (statsd_path,), timedelta_ms(bugdown_time_delta))
|
|
statsd.incr("%s.markdown.count" % (statsd_path,), bugdown_count_delta)
|
|
|
|
# Get the amount of time spent doing database queries
|
|
db_time_output = ""
|
|
queries = connection.connection.queries if connection.connection is not None else []
|
|
if len(queries) > 0:
|
|
query_time = sum(float(query.get('time', 0)) for query in queries)
|
|
db_time_output = " (db: %s/%sq)" % (format_timedelta(query_time),
|
|
len(queries))
|
|
|
|
if not suppress_statsd:
|
|
# Log ms, db ms, and num queries to statsd
|
|
statsd.timing("%s.dbtime" % (statsd_path,), timedelta_ms(query_time))
|
|
statsd.incr("%s.dbq" % (statsd_path, ), len(queries))
|
|
statsd.timing("%s.total" % (statsd_path,), timedelta_ms(time_delta))
|
|
|
|
if 'extra' in log_data:
|
|
extra_request_data = " %s" % (log_data['extra'],)
|
|
else:
|
|
extra_request_data = ""
|
|
logger_client = "(%s via %s)" % (email, client_name)
|
|
logger_timing = '%5s%s%s%s%s%s %s' % \
|
|
(format_timedelta(time_delta), optional_orig_delta,
|
|
memcached_output, bugdown_output,
|
|
db_time_output, startup_output, path)
|
|
logger_line = '%-15s %-7s %3d %s%s %s' % \
|
|
(remote_ip, method, status_code,
|
|
logger_timing, extra_request_data, logger_client)
|
|
logger.info(logger_line)
|
|
|
|
if (is_slow_query(time_delta, path)):
|
|
queue_json_publish("slow_queries", "%s (%s)" % (logger_timing, email), lambda e: None)
|
|
|
|
if settings.PROFILE_ALL_REQUESTS:
|
|
log_data["prof"].disable()
|
|
profile_path = "/tmp/profile.data.%s.%s" % (path.split("/")[-1], int(time_delta * 1000),)
|
|
log_data["prof"].dump_stats(profile_path)
|
|
|
|
# Log some additional data whenever we return certain 40x errors
|
|
if 400 <= status_code < 500 and status_code not in [401, 404, 405]:
|
|
if len(error_content) > 100:
|
|
error_content = "[content more than 100 characters]"
|
|
logger.info('status=%3d, data=%s, uid=%s' % (status_code, error_content, email))
|
|
|
|
class LogRequests(object):
|
|
# We primarily are doing logging using the process_view hook, but
|
|
# for some views, process_view isn't run, so we call the start
|
|
# method here too
|
|
def process_request(self, request):
|
|
request._log_data = dict()
|
|
record_request_start_data(request._log_data)
|
|
if connection.connection is not None:
|
|
connection.connection.queries = []
|
|
|
|
def process_view(self, request, view_func, args, kwargs):
|
|
# process_request was already run; we save the initialization
|
|
# time (i.e. the time between receiving the request and
|
|
# figuring out which view function to call, which is primarily
|
|
# importing modules on the first start)
|
|
request._log_data["startup_time_delta"] = time.time() - request._log_data["time_started"]
|
|
# And then completely reset our tracking to only cover work
|
|
# done as part of this request
|
|
record_request_start_data(request._log_data)
|
|
if connection.connection is not None:
|
|
connection.connection.queries = []
|
|
|
|
def process_response(self, request, response):
|
|
# The reverse proxy might have sent us the real external IP
|
|
remote_ip = request.META.get('HTTP_X_REAL_IP')
|
|
if remote_ip is None:
|
|
remote_ip = request.META['REMOTE_ADDR']
|
|
|
|
# Get the requestor's email address and client, if available.
|
|
try:
|
|
email = request._email
|
|
except Exception:
|
|
email = "unauth"
|
|
try:
|
|
client = request.client.name
|
|
except Exception:
|
|
client = "?"
|
|
|
|
write_log_line(request._log_data, request.path, request.method,
|
|
remote_ip, email, client, response.status_code,
|
|
response.content)
|
|
return response
|
|
|
|
class JsonErrorHandler(object):
|
|
def process_exception(self, request, exception):
|
|
if hasattr(exception, 'to_json_error_msg') and callable(exception.to_json_error_msg):
|
|
return json_error(exception.to_json_error_msg())
|
|
if request.error_format == "JSON":
|
|
logging.error(traceback.format_exc())
|
|
return json_error("Internal server error", status=500)
|
|
return None
|
|
|
|
class TagRequests(object):
|
|
def process_view(self, request, view_func, args, kwargs):
|
|
self.process_request(request)
|
|
def process_request(self, request):
|
|
if request.path.startswith("/api/") or request.path.startswith("/json/"):
|
|
request.error_format = "JSON"
|
|
else:
|
|
request.error_format = "HTML"
|
|
|
|
def csrf_failure(request, reason=""):
|
|
if request.error_format == "JSON":
|
|
return json_error("CSRF Error: %s" % (reason,), status=403)
|
|
else:
|
|
return html_csrf_failure(request, reason)
|
|
|
|
class RateLimitMiddleware(object):
|
|
def process_response(self, request, response):
|
|
if not settings.RATE_LIMITING:
|
|
return response
|
|
|
|
from zerver.lib.rate_limiter import max_api_calls
|
|
# Add X-RateLimit-*** headers
|
|
if hasattr(request, '_ratelimit_applied_limits'):
|
|
response['X-RateLimit-Limit'] = max_api_calls(request.user)
|
|
if hasattr(request, '_ratelimit_secs_to_freedom'):
|
|
response['X-RateLimit-Reset'] = int(time.time() + request._ratelimit_secs_to_freedom)
|
|
if hasattr(request, '_ratelimit_remaining'):
|
|
response['X-RateLimit-Remaining'] = request._ratelimit_remaining
|
|
return response
|
|
|
|
def process_exception(self, request, exception):
|
|
if type(exception) == RateLimited:
|
|
resp = json_error("API usage exceeded rate limit, try again in %s secs" % (request._ratelimit_secs_to_freedom,), status=429)
|
|
resp['Retry-After'] = request._ratelimit_secs_to_freedom
|
|
return resp
|
|
|
|
class FlushDisplayRecipientCache(object):
|
|
def process_response(self, request, response):
|
|
# We flush the per-request caches after every request, so they
|
|
# are not shared at all between requests.
|
|
flush_per_request_caches()
|
|
return response
|
|
|
|
class SessionHostDomainMiddleware(SessionMiddleware):
|
|
def process_response(self, request, response):
|
|
"""
|
|
If request.session was modified, or if the configuration is to save the
|
|
session every time, save the changes and set a session cookie.
|
|
"""
|
|
try:
|
|
accessed = request.session.accessed
|
|
modified = request.session.modified
|
|
except AttributeError:
|
|
pass
|
|
else:
|
|
if accessed:
|
|
patch_vary_headers(response, ('Cookie',))
|
|
if modified or settings.SESSION_SAVE_EVERY_REQUEST:
|
|
if request.session.get_expire_at_browser_close():
|
|
max_age = None
|
|
expires = None
|
|
else:
|
|
max_age = request.session.get_expiry_age()
|
|
expires_time = time.time() + max_age
|
|
expires = cookie_date(expires_time)
|
|
# Save the session data and refresh the client cookie.
|
|
# Skip session save for 500 responses, refs #3881.
|
|
if response.status_code != 500:
|
|
request.session.save()
|
|
host = request.get_host().split(':')[0]
|
|
session_cookie_domain = settings.SESSION_COOKIE_DOMAIN
|
|
if host.endswith(".e.zulip.com"):
|
|
session_cookie_domain = ".e.zulip.com"
|
|
response.set_cookie(settings.SESSION_COOKIE_NAME,
|
|
request.session.session_key, max_age=max_age,
|
|
expires=expires, domain=session_cookie_domain,
|
|
path=settings.SESSION_COOKIE_PATH,
|
|
secure=settings.SESSION_COOKIE_SECURE or None,
|
|
httponly=settings.SESSION_COOKIE_HTTPONLY or None)
|
|
return response
|