600620a8d5
By default apache spawns only one process for the wsgi app if not specified. This patch detects the number of CPUS to configure n CPUs +1 processes by default and allows to specify the number of processes explicitly. Change-Id: I684ecd15193cef169d7a86f66a47b7d1d76c1c24 Closes-Bug: #1658048
322 lines
11 KiB
Python
322 lines
11 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from __future__ import print_function
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import multiprocessing
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import os
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import re
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import socket
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import subprocess
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import sys
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import warnings
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from django.conf import settings
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from django.core.management.base import BaseCommand # noqa
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from django.template import Context, Template # noqa
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# Suppress DeprecationWarnings which clutter the output to the point of
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# rendering it unreadable.
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warnings.simplefilter('ignore')
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cmd_name = __name__.split('.')[-1]
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CURDIR = os.path.realpath(os.path.dirname(__file__))
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PROJECT_PATH = os.path.realpath(os.path.join(CURDIR, '../..'))
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STATIC_PATH = os.path.realpath(os.path.join(PROJECT_PATH, '../static'))
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# Known apache regular expression to retrieve it's version
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APACHE_VERSION_REG = r'Apache/(?P<version>[\d.]*)'
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# Known apache commands to retrieve it's version
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APACHE2_VERSION_CMDS = (
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(('/usr/sbin/apache2ctl', '-V'), APACHE_VERSION_REG),
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(('/usr/sbin/apache2', '-v'), APACHE_VERSION_REG),
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)
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# Known apache log directory locations
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APACHE_LOG_DIRS = (
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'/var/log/httpd', # RHEL / Red Hat / CentOS / Fedora Linux
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'/var/log/apache2', # Debian / Ubuntu Linux
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)
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# Default log directory
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DEFAULT_LOG_DIR = '/var/log'
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def _getattr(obj, name, default):
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"""Like getattr but return `default` if None or False.
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By default, getattr(obj, name, default) returns default only if
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attr does not exist, here, we return `default` even if attr evaluates to
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None or False.
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"""
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value = getattr(obj, name, default)
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if value:
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return value
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else:
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return default
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context = Context({
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'DJANGO_SETTINGS_MODULE': os.environ['DJANGO_SETTINGS_MODULE'],
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'HOSTNAME': socket.getfqdn(),
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'PROJECT_PATH': os.path.realpath(
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_getattr(settings, 'ROOT_PATH', PROJECT_PATH)),
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'STATIC_PATH': os.path.realpath(
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_getattr(settings, 'STATIC_ROOT', STATIC_PATH)),
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'SSLCERT': '/etc/pki/tls/certs/ca.crt',
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'SSLKEY': '/etc/pki/tls/private/ca.key',
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'CACERT': None,
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'PROCESSES': multiprocessing.cpu_count() + 1,
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})
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context['PROJECT_ROOT'] = os.path.dirname(context['PROJECT_PATH'])
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context['PROJECT_DIR_NAME'] = os.path.basename(
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context['PROJECT_PATH'].split(context['PROJECT_ROOT'])[1])
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context['PROJECT_NAME'] = context['PROJECT_DIR_NAME']
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context['WSGI_FILE'] = os.path.join(
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context['PROJECT_PATH'], 'wsgi/horizon.wsgi')
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VHOSTNAME = context['HOSTNAME'].split('.')
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VHOSTNAME[0] = context['PROJECT_NAME']
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context['VHOSTNAME'] = '.'.join(VHOSTNAME)
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if len(VHOSTNAME) > 1:
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context['DOMAINNAME'] = '.'.join(VHOSTNAME[1:])
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else:
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context['DOMAINNAME'] = 'openstack.org'
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context['ADMIN'] = 'webmaster@%s' % context['DOMAINNAME']
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context['ACTIVATE_THIS'] = None
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virtualenv = os.environ.get('VIRTUAL_ENV')
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if virtualenv:
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activate_this = os.path.join(
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virtualenv, 'bin/activate_this.py')
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if os.path.exists(activate_this):
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context['ACTIVATE_THIS'] = activate_this
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# Try to detect apache's version
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# We fallback on 2.4.
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context['APACHE2_VERSION'] = 2.4
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APACHE2_VERSION = None
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for cmd in APACHE2_VERSION_CMDS:
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if os.path.exists(cmd[0][0]):
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try:
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reg = re.compile(cmd[1])
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res = reg.search(
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subprocess.check_output(cmd[0], stderr=subprocess.STDOUT))
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if res:
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APACHE2_VERSION = res.group('version')
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break
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except subprocess.CalledProcessError:
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pass
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if APACHE2_VERSION:
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ver_nums = APACHE2_VERSION.split('.')
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if len(ver_nums) >= 2:
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try:
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context['APACHE2_VERSION'] = float('.'.join(ver_nums[:2]))
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except ValueError:
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pass
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def find_apache_log_dir():
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for log_dir in APACHE_LOG_DIRS:
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if os.path.exists(log_dir) and os.path.isdir(log_dir):
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return log_dir
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return DEFAULT_LOG_DIR
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context['LOGDIR'] = find_apache_log_dir()
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class Command(BaseCommand):
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args = ''
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help = """Create %(wsgi_file)s
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or the contents of an apache %(p_name)s.conf file (on stdout).
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The apache configuration is generated on stdout because the place of this
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file is distribution dependent.
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examples::
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manage.py %(cmd_name)s --wsgi # creates %(wsgi_file)s
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manage.py %(cmd_name)s --apache # creates an apache vhost conf file (on \
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stdout).
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manage.py %(cmd_name)s --apache --ssl --mail=%(admin)s \
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--project=%(p_name)s --hostname=%(hostname)s
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To create an acpache configuration file, redirect the output towards the
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location you desire, e.g.::
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manage.py %(cmd_name)s --apache > \
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/etc/httpd/conf.d/openstack_dashboard.conf
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""" % {
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'cmd_name': cmd_name,
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'p_name': context['PROJECT_NAME'],
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'wsgi_file': context['WSGI_FILE'],
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'admin': context['ADMIN'],
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'hostname': context['VHOSTNAME'], }
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def add_arguments(self, parser):
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# TODO(ygbo): Add an --nginx option.
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parser.add_argument(
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"-a", "--apache",
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default=False, action="store_true", dest="apache",
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help="generate an apache vhost configuration"
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)
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parser.add_argument(
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"--cacert",
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dest="cacert",
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help=("Use with the --apache and --ssl option to define the path"
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" to the SSLCACertificateFile"),
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metavar="CACERT"
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)
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parser.add_argument(
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"-f", "--force",
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default=False, action="store_true", dest="force",
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help="force overwriting of an existing %s file" %
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context['WSGI_FILE']
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)
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parser.add_argument(
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"-H", "--hostname",
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dest="hostname",
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help=("Use with the --apache option to define the server's"
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" hostname (default : %s)") % context['VHOSTNAME'],
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metavar="HOSTNAME"
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)
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parser.add_argument(
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"--logdir",
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dest="logdir",
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help=("Use with the --apache option to define the path to "
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"the apache log directory(default : %s)"
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% context['LOGDIR']),
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metavar="CACERT"
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)
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parser.add_argument(
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"-m", "--mail",
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dest="mail",
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help=("Use with the --apache option to define the web site"
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" administrator's email (default : %s)") %
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context['ADMIN'],
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metavar="MAIL"
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)
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parser.add_argument(
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"-n", "--namedhost",
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default=False, action="store_true", dest="namedhost",
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help=("Use with the --apache option. The apache vhost "
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"configuration will work only when accessed with "
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"the proper hostname (see --hostname).")
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)
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parser.add_argument(
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"--processes",
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dest="processes",
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help=("Use with the --apache option to define the number of "
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"apache processes (by default the number of cpus +1 which "
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"is %s on this machine).") % context['PROCESSES'],
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metavar="PROCESSES"
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)
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parser.add_argument(
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"-p", "--project",
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dest="project",
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help=("Use with the --apache option to define the project "
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"name (default : %s)") % context['PROJECT_NAME'],
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metavar="PROJECT"
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)
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parser.add_argument(
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"-s", "--ssl",
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default=False, action="store_true", dest="ssl",
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help=("Use with the --apache option. The apache vhost "
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"configuration will use an SSL configuration")
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)
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parser.add_argument(
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"--sslcert",
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dest="sslcert",
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help=("Use with the --apache and --ssl option to define "
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"the path to the SSLCertificateFile (default : %s)"
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) % context['SSLCERT'],
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metavar="SSLCERT"
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)
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parser.add_argument(
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"--sslkey",
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dest="sslkey",
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help=("Use with the --apache and --ssl option to define "
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"the path to the SSLCertificateKeyFile "
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"(default : %s)") % context['SSLKEY'],
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metavar="SSLKEY"
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)
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parser.add_argument(
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"--apache-version",
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dest="apache_version",
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type=float,
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help=("Use with the --apache option to define the apache "
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"major (as a floating point number) version "
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"(default : %s)."
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% context['APACHE2_VERSION']),
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metavar="APACHE_VERSION"
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)
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parser.add_argument(
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"-w", "--wsgi",
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default=False, action="store_true", dest="wsgi",
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help="generate the horizon.wsgi file"
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)
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def handle(self, *args, **options):
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force = options.get('force')
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context['SSL'] = options.get('ssl')
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if options.get('mail'):
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context['ADMIN'] = options['mail']
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if options.get('cacert'):
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context['CACERT'] = options['cacert']
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if options.get('logdir'):
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context['LOGDIR'] = options['logdir'].rstrip('/')
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if options.get('processes'):
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context['PROCESSES'] = options['processes']
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if options.get('project'):
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context['PROJECT_NAME'] = options['project']
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if options.get('hostname'):
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context['VHOSTNAME'] = options['hostname']
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if options.get('sslcert'):
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context['SSLCERT'] = options['sslcert']
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if options.get('sslkey'):
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context['SSLKEY'] = options['sslkey']
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if options.get('apache_version'):
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context['APACHE2_VERSION'] = options['apache_version']
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if options.get('namedhost'):
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context['NAMEDHOST'] = context['VHOSTNAME']
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else:
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context['NAMEDHOST'] = '*'
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# Generate the WSGI.
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if options.get('wsgi'):
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with open(
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os.path.join(CURDIR, 'horizon.wsgi.template'), 'r'
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) as fp:
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wsgi_template = Template(fp.read())
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if not os.path.exists(context['WSGI_FILE']) or force:
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with open(context['WSGI_FILE'], 'w') as fp:
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fp.write(wsgi_template.render(context))
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print('Generated "%s"' % context['WSGI_FILE'])
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else:
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sys.exit('"%s" already exists, use --force to overwrite' %
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context['WSGI_FILE'])
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# Generate the apache configuration.
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elif options.get('apache'):
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with open(
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os.path.join(CURDIR, 'apache_vhost.conf.template'), 'r'
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) as fp:
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wsgi_template = Template(fp.read())
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sys.stdout.write(wsgi_template.render(context))
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else:
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self.print_help('manage.py', cmd_name)
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