misc: remove support for publishing prometheus metrics (#79709)

debian/control

@@ -19,7 +19,6 @@ Depends: python3-apt,
          python3-dnspython,
          python3-memcache,
          python3-num2words,
-         python3-prometheus-client,
          python3-publik-django-templatetags,
          python3-requests,
          python3-systemd,

debian/debian_config_common.py

@@ -382,8 +382,6 @@ MIDDLEWARE = (
     'hobo.middleware.xforwardedfor.XForwardedForMiddleware',
 ) + MIDDLEWARE
 
-MIDDLEWARE = MIDDLEWARE + ('hobo.middleware.PrometheusStatsMiddleware',)
-
 
 HOBO_MANAGER_HOMEPAGE_URL_VAR = 'portal_agent_url'
 HOBO_MANAGER_HOMEPAGE_TITLE_VAR = 'portal_agent_title'

hobo/middleware/__init__.py

@@ -1,5 +1,4 @@
 from .cookies_samesite import CookiesSameSiteFixMiddleware
 from .cors import CORSMiddleware
 from .seo import RobotsTxtMiddleware
-from .stats import PrometheusStatsMiddleware
 from .version import VersionMiddleware

hobo/middleware/stats.py

@@ -1,108 +0,0 @@
-# hobo - portal to configure and deploy applications
-# Copyright (C) 2017  Entr'ouvert
-#
-# This program is free software: you can redistribute it and/or modify it
-# under the terms of the GNU Affero General Public License as published
-# by the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-import inspect
-import time
-
-import django
-import prometheus_client
-from django.db import connection
-from django.http import HttpResponse
-from django.utils.deprecation import MiddlewareMixin
-
-requests_total_by_host_view_status_method = prometheus_client.Counter(
-    'django_http_requests_total_by_host_view_status_method',
-    'Count of requests by host, view, status, method.',
-    ['host', 'view', 'status', 'method'],
-)
-
-requests_bytes_by_host_view_status_method = prometheus_client.Summary(
-    'django_http_requests_bytes_by_host_view_status_method',
-    'Bytes of requests by host, view, status, method.',
-    ['host', 'view', 'status', 'method'],
-)
-
-requests_times_by_host_view_status_method = prometheus_client.Summary(
-    'django_http_requests_times_by_host_view_status_method',
-    'Duration of requests by host, view, status, method.',
-    ['host', 'view', 'status', 'method'],
-)
-
-requests_queries_count_by_host_view_status_method = prometheus_client.Summary(
-    'django_http_requests_queries_count_by_host_view_status_method',
-    'Query count by host, view, status, method.',
-    ['host', 'view', 'status', 'method'],
-)
-
-requests_queries_time_by_host_view_status_method = prometheus_client.Summary(
-    'django_http_requests_queries_time_by_host_view_status_method',
-    'Query time by host, view, status, method.',
-    ['host', 'view', 'status', 'method'],
-)
-
-
-class PrometheusStatsMiddleware(MiddlewareMixin):
-    def process_request(self, request):
-        if request.method == 'GET' and request.path == '/__metrics__/':
-            return HttpResponse(
-                prometheus_client.generate_latest(), content_type=prometheus_client.CONTENT_TYPE_LATEST
-            )
-
-        connection.force_debug_cursor = True  # to count queries
-        request._stats_t0 = time.time()
-        return None
-
-    def process_view(self, request, view_func, view_args, view_kwargs):
-        view = view_func
-        if not inspect.isfunction(view_func):
-            view = view.__class__
-        try:
-            request._view_name = '%s.%s' % (view.__module__, view.__name__)
-        except AttributeError:
-            pass
-
-    def process_response(self, request, response):
-        if not hasattr(request, '_stats_t0'):
-            return response
-        http_method = request.method
-        host_name = request.get_host()
-        total_time = time.time() - request._stats_t0
-
-        status_code = response.status_code
-        view_name = getattr(request, '_view_name', '<unnamed view>')
-        requests_total_by_host_view_status_method.labels(host_name, view_name, status_code, http_method).inc()
-
-        if hasattr(response, 'content'):
-            response_size = len(response.content)
-            requests_bytes_by_host_view_status_method.labels(
-                host_name, view_name, status_code, http_method
-            ).observe(response_size)
-
-        requests_times_by_host_view_status_method.labels(
-            host_name, view_name, status_code, http_method
-        ).observe(total_time)
-
-        if connection.queries_logged:
-            sql_queries_count = len(connection.queries)
-            sql_queries_time = sum(float(x['time']) for x in connection.queries)
-            requests_queries_count_by_host_view_status_method.labels(
-                host_name, view_name, status_code, http_method
-            ).observe(sql_queries_count)
-            requests_queries_time_by_host_view_status_method.labels(
-                host_name, view_name, status_code, http_method
-            ).observe(sql_queries_time)
-
-        return response

requirements.txt

@@ -3,4 +3,3 @@ django>=1.11,<1.12
 celery<4
 django-mellon
 lxml
-prometheus_client

setup.py

@@ -153,7 +153,6 @@ setup(
         'celery<4' if sys.version_info < (3, 7) else 'celery>=4',
         'django-mellon',
         'django-tenant-schemas',
-        'prometheus_client',
         'djangorestframework>=3.12, <3.14',
         'dnspython',
         'lxml',