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auth-plugins: some code cleanup + added docs for main plugin.
auth-plugins: some code cleanup + added docs for main plugin.

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process_management.py
183 lines | 6.2 KiB | text/x-python | PythonLexer
# -*- coding: utf-8 -*-
# Copyright (C) 2016-2018 RhodeCode GmbH
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License, version 3
# (only), as published by the Free Software Foundation.
#
# 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 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/>.
#
# This program is dual-licensed. If you wish to learn more about the
# RhodeCode Enterprise Edition, including its added features, Support services,
# and proprietary license terms, please see https://rhodecode.com/licenses/
import logging
import psutil
import signal
from pyramid.view import view_config
from rhodecode.apps._base import BaseAppView
from rhodecode.apps._base.navigation import navigation_list
from rhodecode.lib import system_info
from rhodecode.lib.auth import (
LoginRequired, HasPermissionAllDecorator, CSRFRequired)
from rhodecode.lib.utils2 import safe_int, StrictAttributeDict
log = logging.getLogger(__name__)
class AdminProcessManagementView(BaseAppView):
def load_default_context(self):
c = self._get_local_tmpl_context()
return c
def _format_proc(self, proc, with_children=False):
try:
mem = proc.memory_info()
proc_formatted = StrictAttributeDict({
'pid': proc.pid,
'name': proc.name(),
'mem_rss': mem.rss,
'mem_vms': mem.vms,
'cpu_percent': proc.cpu_percent(),
'create_time': proc.create_time(),
'cmd': ' '.join(proc.cmdline()),
})
if with_children:
proc_formatted.update({
'children': [self._format_proc(x)
for x in proc.children(recursive=True)]
})
except Exception:
log.exception('Failed to load proc')
proc_formatted = None
return proc_formatted
def get_processes(self):
proc_list = []
for p in psutil.process_iter():
if 'gunicorn' in p.name():
proc = self._format_proc(p, with_children=True)
if proc:
proc_list.append(proc)
return proc_list
def get_workers(self):
workers = None
try:
rc_config = system_info.rhodecode_config().value['config']
workers = rc_config['server:main'].get('workers')
except Exception:
pass
return workers or '?'
@LoginRequired()
@HasPermissionAllDecorator('hg.admin')
@view_config(
route_name='admin_settings_process_management', request_method='GET',
renderer='rhodecode:templates/admin/settings/settings.mako')
def process_management(self):
_ = self.request.translate
c = self.load_default_context()
c.active = 'process_management'
c.navlist = navigation_list(self.request)
c.gunicorn_processes = self.get_processes()
c.gunicorn_workers = self.get_workers()
return self._get_template_context(c)
@LoginRequired()
@HasPermissionAllDecorator('hg.admin')
@view_config(
route_name='admin_settings_process_management_data', request_method='GET',
renderer='rhodecode:templates/admin/settings/settings_process_management_data.mako')
def process_management_data(self):
_ = self.request.translate
c = self.load_default_context()
c.gunicorn_processes = self.get_processes()
return self._get_template_context(c)
@LoginRequired()
@HasPermissionAllDecorator('hg.admin')
@CSRFRequired()
@view_config(
route_name='admin_settings_process_management_signal',
request_method='POST', renderer='json_ext')
def process_management_signal(self):
pids = self.request.json.get('pids', [])
result = []
def on_terminate(proc):
msg = "process `PID:{}` terminated with exit code {}".format(
proc.pid, proc.returncode or 0)
result.append(msg)
procs = []
for pid in pids:
pid = safe_int(pid)
if pid:
try:
proc = psutil.Process(pid)
except psutil.NoSuchProcess:
continue
children = proc.children(recursive=True)
if children:
log.warning('Wont kill Master Process')
else:
procs.append(proc)
for p in procs:
try:
p.terminate()
except psutil.AccessDenied as e:
log.warning('Access denied: {}'.format(e))
gone, alive = psutil.wait_procs(procs, timeout=10, callback=on_terminate)
for p in alive:
try:
p.kill()
except psutil.AccessDenied as e:
log.warning('Access denied: {}'.format(e))
return {'result': result}
@LoginRequired()
@HasPermissionAllDecorator('hg.admin')
@CSRFRequired()
@view_config(
route_name='admin_settings_process_management_master_signal',
request_method='POST', renderer='json_ext')
def process_management_master_signal(self):
pid_data = self.request.json.get('pid_data', {})
pid = safe_int(pid_data['pid'])
action = pid_data['action']
if pid:
try:
proc = psutil.Process(pid)
except psutil.NoSuchProcess:
return {'result': 'failure_no_such_process'}
children = proc.children(recursive=True)
if children:
# master process
if action == '+' and len(children) <= 20:
proc.send_signal(signal.SIGTTIN)
elif action == '-' and len(children) >= 2:
proc.send_signal(signal.SIGTTOU)
else:
return {'result': 'failure_wrong_action'}
return {'result': 'success'}
return {'result': 'failure_not_master'}