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import socket
import getopt
import os
import sys
import tempfile
import errno
import signal
import re
import pwd
import grp
import resource
import stat
import pkg_resources
import glob
import platform
import warnings
import fcntl
from supervisor.compat import PY2
from supervisor.compat import ConfigParser
from supervisor.compat import as_bytes, as_string
from supervisor.compat import xmlrpclib
from supervisor.compat import StringIO
from supervisor.compat import basestring
from supervisor.medusa import asyncore_25 as asyncore
from supervisor.datatypes import process_or_group_name
from supervisor.datatypes import boolean
from supervisor.datatypes import integer
from supervisor.datatypes import name_to_uid
from supervisor.datatypes import gid_for_uid
from supervisor.datatypes import existing_dirpath
from supervisor.datatypes import byte_size
from supervisor.datatypes import signal_number
from supervisor.datatypes import list_of_exitcodes
from supervisor.datatypes import dict_of_key_value_pairs
from supervisor.datatypes import logfile_name
from supervisor.datatypes import list_of_strings
from supervisor.datatypes import octal_type
from supervisor.datatypes import existing_directory
from supervisor.datatypes import logging_level
from supervisor.datatypes import colon_separated_user_group
from supervisor.datatypes import inet_address
from supervisor.datatypes import InetStreamSocketConfig
from supervisor.datatypes import UnixStreamSocketConfig
from supervisor.datatypes import url
from supervisor.datatypes import Automatic
from supervisor.datatypes import Syslog
from supervisor.datatypes import auto_restart
from supervisor.datatypes import profile_options
from supervisor import loggers
from supervisor import states
from supervisor import xmlrpc
from supervisor import poller
def _read_version_txt():
mydir = os.path.abspath(os.path.dirname(__file__))
version_txt = os.path.join(mydir, 'version.txt')
with open(version_txt, 'r') as f:
return f.read().strip()
VERSION = _read_version_txt()
def normalize_path(v):
return os.path.normpath(os.path.abspath(os.path.expanduser(v)))
class Dummy:
pass
class Options:
stderr = sys.stderr
stdout = sys.stdout
exit = sys.exit
warnings = warnings
uid = gid = None
progname = sys.argv[0]
configfile = None
schemadir = None
configroot = None
here = None
# Class variable deciding whether positional arguments are allowed.
# If you want positional arguments, set this to 1 in your subclass.
positional_args_allowed = 0
def __init__(self, require_configfile=True):
"""Constructor.
Params:
require_configfile -- whether we should fail on no config file.
"""
self.names_list = []
self.short_options = []
self.long_options = []
self.options_map = {}
self.default_map = {}
self.required_map = {}
self.environ_map = {}
self.attr_priorities = {}
self.require_configfile = require_configfile
self.add(None, None, "h", "help", self.help)
self.add(None, None, "?", None, self.help)
self.add("configfile", None, "c:", "configuration=")
here = os.path.dirname(os.path.dirname(sys.argv[0]))
searchpaths = [os.path.join(here, 'etc', 'supervisord.conf'),
os.path.join(here, 'supervisord.conf'),
'supervisord.conf',
'etc/supervisord.conf',
'/etc/supervisord.conf',
'/etc/supervisor/supervisord.conf',
]
self.searchpaths = searchpaths
self.environ_expansions = {}
for k, v in os.environ.items():
self.environ_expansions['ENV_%s' % k] = v
def default_configfile(self):
"""Return the name of the found config file or print usage/exit."""
config = None
for path in self.searchpaths:
if os.path.exists(path):
config = path
break
if config is None and self.require_configfile:
self.usage('No config file found at default paths (%s); '
'use the -c option to specify a config file '
'at a different path' % ', '.join(self.searchpaths))
return config
def help(self, dummy):
"""Print a long help message to stdout and exit(0).
Occurrences of "%s" in are replaced by self.progname.
"""
help = self.doc + "\n"
if help.find("%s") > 0:
help = help.replace("%s", self.progname)
self.stdout.write(help)
self.exit(0)
def usage(self, msg):
"""Print a brief error message to stderr and exit(2)."""
self.stderr.write("Error: %s\n" % str(msg))
self.stderr.write("For help, use %s -h\n" % self.progname)
self.exit(2)
def add(self,
name=None, # attribute name on self
confname=None, # dotted config path name
short=None, # short option name
long=None, # long option name
handler=None, # handler (defaults to string)
default=None, # default value
required=None, # message if not provided
flag=None, # if not None, flag value
env=None, # if not None, environment variable
):
"""Add information about a configuration option.
This can take several forms:
add(name, confname)
Configuration option 'confname' maps to attribute 'name'
add(name, None, short, long)
Command line option '-short' or '--long' maps to 'name'
add(None, None, short, long, handler)
Command line option calls handler
add(name, None, short, long, handler)
Assign handler return value to attribute 'name'
In addition, one of the following keyword arguments may be given:
default=... -- if not None, the default value
required=... -- if nonempty, an error message if no value provided
flag=... -- if not None, flag value for command line option
env=... -- if not None, name of environment variable that
overrides the configuration file or default
"""
if flag is not None:
if handler is not None:
raise ValueError("use at most one of flag= and handler=")
if not long and not short:
raise ValueError("flag= requires a command line flag")
if short and short.endswith(":"):
raise ValueError("flag= requires a command line flag")
if long and long.endswith("="):
raise ValueError("flag= requires a command line flag")
handler = lambda arg, flag=flag: flag
if short and long:
if short.endswith(":") != long.endswith("="):
raise ValueError("inconsistent short/long options: %r %r" % (
short, long))
if short:
if short[0] == "-":
raise ValueError("short option should not start with '-'")
key, rest = short[:1], short[1:]
if rest not in ("", ":"):
raise ValueError("short option should be 'x' or 'x:'")
key = "-" + key
if key in self.options_map:
raise ValueError("duplicate short option key '%s'" % key)
self.options_map[key] = (name, handler)
self.short_options.append(short)
if long:
if long[0] == "-":
raise ValueError("long option should not start with '-'")
key = long
if key[-1] == "=":
key = key[:-1]
key = "--" + key
if key in self.options_map:
raise ValueError("duplicate long option key '%s'" % key)
self.options_map[key] = (name, handler)
self.long_options.append(long)
if env:
self.environ_map[env] = (name, handler)
if name:
if not hasattr(self, name):
setattr(self, name, None)
self.names_list.append((name, confname))
if default is not None:
self.default_map[name] = default
if required:
self.required_map[name] = required
def _set(self, attr, value, prio):
current = self.attr_priorities.get(attr, -1)
if prio >= current:
setattr(self, attr, value)
self.attr_priorities[attr] = prio
def realize(self, args=None, doc=None, progname=None):
"""Realize a configuration.
Optional arguments:
args -- the command line arguments, less the program name
(default is sys.argv[1:])
doc -- usage message (default is __main__.__doc__)
"""
# Provide dynamic default method arguments
if args is None:
args = sys.argv[1:]
if progname is None:
progname = sys.argv[0]
if doc is None:
try:
import __main__
doc = __main__.__doc__
except Exception:
pass
self.progname = progname
self.doc = doc
self.options = []
self.args = []
# Call getopt
try:
self.options, self.args = getopt.getopt(
args, "".join(self.short_options), self.long_options)
except getopt.error as exc:
self.usage(str(exc))
# Check for positional args
if self.args and not self.positional_args_allowed:
self.usage("positional arguments are not supported: %s" % (str(self.args)))
# Process options returned by getopt
for opt, arg in self.options:
name, handler = self.options_map[opt]
if handler is not None:
try:
arg = handler(arg)
except ValueError as msg:
self.usage("invalid value for %s %r: %s" % (opt, arg, msg))
if name and arg is not None:
if getattr(self, name) is not None:
self.usage("conflicting command line option %r" % opt)
self._set(name, arg, 2)
# Process environment variables
for envvar in self.environ_map.keys():
name, handler = self.environ_map[envvar]
if envvar in os.environ:
value = os.environ[envvar]
if handler is not None:
try:
value = handler(value)
except ValueError as msg:
self.usage("invalid environment value for %s %r: %s"
% (envvar, value, msg))
if name and value is not None:
self._set(name, value, 1)
if self.configfile is None:
self.configfile = self.default_configfile()
self.process_config()
def process_config(self, do_usage=True):
"""Process configuration data structure.
This includes reading config file if necessary, setting defaults etc.
"""
if self.configfile:
self.process_config_file(do_usage)
# Copy config options to attributes of self. This only fills
# in options that aren't already set from the command line.
for name, confname in self.names_list:
if confname:
parts = confname.split(".")
obj = self.configroot
for part in parts:
if obj is None:
break
# Here AttributeError is not a user error!
obj = getattr(obj, part)
self._set(name, obj, 0)
# Process defaults
for name, value in self.default_map.items():
if getattr(self, name) is None:
setattr(self, name, value)
# Process required options
for name, message in self.required_map.items():
if getattr(self, name) is None:
self.usage(message)
def process_config_file(self, do_usage):
# Process config file
if not hasattr(self.configfile, 'read'):
self.here = os.path.abspath(os.path.dirname(self.configfile))
try:
self.read_config(self.configfile)
except ValueError as msg:
if do_usage:
# if this is not called from an RPC method, run usage and exit.
self.usage(str(msg))
else:
# if this is called from an RPC method, raise an error
raise ValueError(msg)
def exists(self, path):
return os.path.exists(path)
def open(self, fn, mode='r'):
return open(fn, mode)
def get_plugins(self, parser, factory_key, section_prefix):
factories = []
for section in parser.sections():
if not section.startswith(section_prefix):
continue
name = section.split(':', 1)[1]
factory_spec = parser.saneget(section, factory_key, None)
if factory_spec is None:
raise ValueError('section [%s] does not specify a %s' %
(section, factory_key))
try:
factory = self.import_spec(factory_spec)
except ImportError:
raise ValueError('%s cannot be resolved within [%s]' % (
factory_spec, section))
extras = {}
for k in parser.options(section):
if k != factory_key:
extras[k] = parser.saneget(section, k)
factories.append((name, factory, extras))
return factories
def import_spec(self, spec):
ep = pkg_resources.EntryPoint.parse("x=" + spec)
if hasattr(ep, 'resolve'):
# this is available on setuptools >= 10.2
return ep.resolve()
else:
# this causes a DeprecationWarning on setuptools >= 11.3
return ep.load(False)
class ServerOptions(Options):
user = None
sockchown = None
sockchmod = None
logfile = None
loglevel = None
pidfile = None
passwdfile = None
nodaemon = None
silent = None
httpservers = ()
unlink_pidfile = False
unlink_socketfiles = False
mood = states.SupervisorStates.RUNNING
def __init__(self):
Options.__init__(self)
self.configroot = Dummy()
self.configroot.supervisord = Dummy()
self.add(None, None, "v", "version", self.version)
self.add("nodaemon", "supervisord.nodaemon", "n", "nodaemon", flag=1,
default=0)
self.add("user", "supervisord.user", "u:", "user=")
self.add("umask", "supervisord.umask", "m:", "umask=",
octal_type, default='022')
self.add("directory", "supervisord.directory", "d:", "directory=",
existing_directory)
self.add("logfile", "supervisord.logfile", "l:", "logfile=",
existing_dirpath, default="supervisord.log")
self.add("logfile_maxbytes", "supervisord.logfile_maxbytes",
"y:", "logfile_maxbytes=", byte_size,
default=50 * 1024 * 1024) # 50MB
self.add("logfile_backups", "supervisord.logfile_backups",
"z:", "logfile_backups=", integer, default=10)
self.add("loglevel", "supervisord.loglevel", "e:", "loglevel=",
logging_level, default="info")
self.add("pidfile", "supervisord.pidfile", "j:", "pidfile=",
existing_dirpath, default="supervisord.pid")
self.add("identifier", "supervisord.identifier", "i:", "identifier=",
str, default="supervisor")
self.add("childlogdir", "supervisord.childlogdir", "q:", "childlogdir=",
existing_directory, default=tempfile.gettempdir())
self.add("minfds", "supervisord.minfds",
"a:", "minfds=", int, default=1024)
self.add("minprocs", "supervisord.minprocs",
"", "minprocs=", int, default=200)
self.add("nocleanup", "supervisord.nocleanup",
"k", "nocleanup", flag=1, default=0)
self.add("strip_ansi", "supervisord.strip_ansi",
"t", "strip_ansi", flag=1, default=0)
self.add("profile_options", "supervisord.profile_options",
"", "profile_options=", profile_options, default=None)
self.add("silent", "supervisord.silent",
"s", "silent", flag=1, default=0)
self.pidhistory = {}
self.process_group_configs = []
self.parse_criticals = []
self.parse_warnings = []
self.parse_infos = []
self.signal_receiver = SignalReceiver()
self.poller = poller.Poller(self)
def version(self, dummy):
"""Print version to stdout and exit(0).
"""
self.stdout.write('%s\n' % VERSION)
self.exit(0)
# TODO: not covered by any test, but used by dispatchers
def getLogger(self, *args, **kwargs):
return loggers.getLogger(*args, **kwargs)
def default_configfile(self):
if os.getuid() == 0:
self.warnings.warn(
'Supervisord is running as root and it is searching '
'for its configuration file in default locations '
'(including its current working directory); you '
'probably want to specify a "-c" argument specifying an '
'absolute path to a configuration file for improved '
'security.'
)
return Options.default_configfile(self)
def realize(self, *arg, **kw):
Options.realize(self, *arg, **kw)
section = self.configroot.supervisord
# Additional checking of user option; set uid and gid
if self.user is not None:
try:
uid = name_to_uid(self.user)
except ValueError as msg:
self.usage(msg) # invalid user
self.uid = uid
self.gid = gid_for_uid(uid)
if not self.loglevel:
self.loglevel = section.loglevel
if self.logfile:
logfile = self.logfile
else:
logfile = section.logfile
if logfile != 'syslog':
# if the value for logfile is "syslog", we don't want to
# normalize the path to something like $CWD/syslog.log, but
# instead use the syslog service.
self.logfile = normalize_path(logfile)
if self.pidfile:
pidfile = self.pidfile
else:
pidfile = section.pidfile
self.pidfile = normalize_path(pidfile)
self.rpcinterface_factories = section.rpcinterface_factories
self.serverurl = None
self.server_configs = sconfigs = section.server_configs
# we need to set a fallback serverurl that process.spawn can use
# prefer a unix domain socket
for config in [ config for config in sconfigs if
config['family'] is socket.AF_UNIX ]:
path = config['file']
self.serverurl = 'unix://%s' % path
break
# fall back to an inet socket
if self.serverurl is None:
for config in [ config for config in sconfigs if
config['family'] is socket.AF_INET]:
host = config['host']
port = config['port']
if not host:
host = 'localhost'
self.serverurl = 'http://%s:%s' % (host, port)
# self.serverurl may still be None if no servers at all are
# configured in the config file
def process_config(self, do_usage=True):
Options.process_config(self, do_usage=do_usage)
new = self.configroot.supervisord.process_group_configs
self.process_group_configs = new
def read_config(self, fp):
# Clear parse messages, since we may be re-reading the
# config a second time after a reload.
self.parse_criticals = []
self.parse_warnings = []
self.parse_infos = []
section = self.configroot.supervisord
need_close = False
if not hasattr(fp, 'read'):
if not self.exists(fp):
raise ValueError("could not find config file %s" % fp)
try:
fp = self.open(fp, 'r')
need_close = True
except (IOError, OSError):
raise ValueError("could not read config file %s" % fp)
parser = UnhosedConfigParser()
parser.expansions = self.environ_expansions
try:
try:
parser.read_file(fp)
except AttributeError:
parser.readfp(fp)
except ConfigParser.ParsingError as why:
raise ValueError(str(why))
finally:
if need_close:
fp.close()
host_node_name = platform.node()
expansions = {'here':self.here,
'host_node_name':host_node_name}
expansions.update(self.environ_expansions)
if parser.has_section('include'):
parser.expand_here(self.here)
if not parser.has_option('include', 'files'):
raise ValueError(".ini file has [include] section, but no "
"files setting")
files = parser.get('include', 'files')
files = expand(files, expansions, 'include.files')
files = files.split()
if hasattr(fp, 'name'):
base = os.path.dirname(os.path.abspath(fp.name))
else:
base = '.'
for pattern in files:
pattern = os.path.join(base, pattern)
filenames = glob.glob(pattern)
if not filenames:
self.parse_warnings.append(
'No file matches via include "%s"' % pattern)
continue
for filename in sorted(filenames):
self.parse_infos.append(
'Included extra file "%s" during parsing' % filename)
try:
parser.read(filename)
except ConfigParser.ParsingError as why:
raise ValueError(str(why))
else:
parser.expand_here(
os.path.abspath(os.path.dirname(filename))
)
sections = parser.sections()
if not 'supervisord' in sections:
raise ValueError('.ini file does not include supervisord section')
common_expansions = {'here':self.here}
def get(opt, default, **kwargs):
expansions = kwargs.get('expansions', {})
expansions.update(common_expansions)
kwargs['expansions'] = expansions
return parser.getdefault(opt, default, **kwargs)
section.minfds = integer(get('minfds', 1024))
section.minprocs = integer(get('minprocs', 200))
directory = get('directory', None)
if directory is None:
section.directory = None
else:
section.directory = existing_directory(directory)
section.user = get('user', None)
section.umask = octal_type(get('umask', '022'))
section.logfile = existing_dirpath(get('logfile', 'supervisord.log'))
section.logfile_maxbytes = byte_size(get('logfile_maxbytes', '50MB'))
section.logfile_backups = integer(get('logfile_backups', 10))
section.loglevel = logging_level(get('loglevel', 'info'))
section.pidfile = existing_dirpath(get('pidfile', 'supervisord.pid'))
section.identifier = get('identifier', 'supervisor')
section.nodaemon = boolean(get('nodaemon', 'false'))
section.silent = boolean(get('silent', 'false'))
tempdir = tempfile.gettempdir()
section.childlogdir = existing_directory(get('childlogdir', tempdir))
section.nocleanup = boolean(get('nocleanup', 'false'))
section.strip_ansi = boolean(get('strip_ansi', 'false'))
environ_str = get('environment', '')
environ_str = expand(environ_str, expansions, 'environment')
section.environment = dict_of_key_value_pairs(environ_str)
# extend expansions for global from [supervisord] environment definition
for k, v in section.environment.items():
self.environ_expansions['ENV_%s' % k ] = v
# Process rpcinterface plugins before groups to allow custom events to
# be registered.
section.rpcinterface_factories = self.get_plugins(
parser,
'supervisor.rpcinterface_factory',
'rpcinterface:'
)
section.process_group_configs = self.process_groups_from_parser(parser)
for group in section.process_group_configs:
for proc in group.process_configs:
env = section.environment.copy()
env.update(proc.environment)
proc.environment = env
section.server_configs = self.server_configs_from_parser(parser)
section.profile_options = None
return section
def process_groups_from_parser(self, parser):
groups = []
all_sections = parser.sections()
homogeneous_exclude = []
common_expansions = {'here':self.here}
def get(section, opt, default, **kwargs):
expansions = kwargs.get('expansions', {})
expansions.update(common_expansions)
kwargs['expansions'] = expansions
return parser.saneget(section, opt, default, **kwargs)
# process heterogeneous groups
for section in all_sections:
if not section.startswith('group:'):
continue
group_name = process_or_group_name(section.split(':', 1)[1])
programs = list_of_strings(get(section, 'programs', None))
priority = integer(get(section, 'priority', 999))
group_processes = []
for program in programs:
program_section = "program:%s" % program
fcgi_section = "fcgi-program:%s" % program
if not program_section in all_sections and not fcgi_section in all_sections:
raise ValueError(
'[%s] names unknown program or fcgi-program %s' % (section, program))
if program_section in all_sections and fcgi_section in all_sections:
raise ValueError(
'[%s] name %s is ambiguous (exists as program and fcgi-program)' %
(section, program))
section = program_section if program_section in all_sections else fcgi_section
homogeneous_exclude.append(section)
processes = self.processes_from_section(parser, section,
group_name, ProcessConfig)
group_processes.extend(processes)
groups.append(
ProcessGroupConfig(self, group_name, priority, group_processes)
)
# process "normal" homogeneous groups
for section in all_sections:
if ( (not section.startswith('program:') )
or section in homogeneous_exclude ):
continue
program_name = process_or_group_name(section.split(':', 1)[1])
priority = integer(get(section, 'priority', 999))
processes=self.processes_from_section(parser, section, program_name,
ProcessConfig)
groups.append(
ProcessGroupConfig(self, program_name, priority, processes)
)
# process "event listener" homogeneous groups
for section in all_sections:
if not section.startswith('eventlistener:'):
continue
pool_name = section.split(':', 1)[1]
# give listeners a "high" default priority so they are started first
# and stopped last at mainloop exit
priority = integer(get(section, 'priority', -1))
buffer_size = integer(get(section, 'buffer_size', 10))
if buffer_size < 1:
raise ValueError('[%s] section sets invalid buffer_size (%d)' %
(section, buffer_size))
result_handler = get(section, 'result_handler',
'supervisor.dispatchers:default_handler')
try:
result_handler = self.import_spec(result_handler)
except ImportError:
raise ValueError('%s cannot be resolved within [%s]' % (
result_handler, section))
pool_event_names = [x.upper() for x in
list_of_strings(get(section, 'events', ''))]
pool_event_names = set(pool_event_names)
if not pool_event_names:
raise ValueError('[%s] section requires an "events" line' %
section)
from supervisor.events import EventTypes
pool_events = []
for pool_event_name in pool_event_names:
pool_event = getattr(EventTypes, pool_event_name, None)
if pool_event is None:
raise ValueError('Unknown event type %s in [%s] events' %
(pool_event_name, section))
pool_events.append(pool_event)
redirect_stderr = boolean(get(section, 'redirect_stderr', 'false'))
if redirect_stderr:
raise ValueError('[%s] section sets redirect_stderr=true '
'but this is not allowed because it will interfere '
'with the eventlistener protocol' % section)
processes=self.processes_from_section(parser, section, pool_name,
EventListenerConfig)
groups.append(
EventListenerPoolConfig(self, pool_name, priority, processes,
buffer_size, pool_events,
result_handler)
)
# process fastcgi homogeneous groups
for section in all_sections:
if ( (not section.startswith('fcgi-program:') )
or section in homogeneous_exclude ):
continue
program_name = process_or_group_name(section.split(':', 1)[1])
priority = integer(get(section, 'priority', 999))
fcgi_expansions = {'program_name': program_name}
# find proc_uid from "user" option
proc_user = get(section, 'user', None)
if proc_user is None:
proc_uid = None
else:
proc_uid = name_to_uid(proc_user)
socket_backlog = get(section, 'socket_backlog', None)
if socket_backlog is not None:
socket_backlog = integer(socket_backlog)
if (socket_backlog < 1 or socket_backlog > 65535):
raise ValueError('Invalid socket_backlog value %s'
% socket_backlog)
socket_owner = get(section, 'socket_owner', None)
if socket_owner is not None:
try:
socket_owner = colon_separated_user_group(socket_owner)
except ValueError:
raise ValueError('Invalid socket_owner value %s'
% socket_owner)
socket_mode = get(section, 'socket_mode', None)
if socket_mode is not None:
try:
socket_mode = octal_type(socket_mode)
except (TypeError, ValueError):
raise ValueError('Invalid socket_mode value %s'
% socket_mode)
socket = get(section, 'socket', None, expansions=fcgi_expansions)
if not socket:
raise ValueError('[%s] section requires a "socket" line' %
section)
try:
socket_config = self.parse_fcgi_socket(socket, proc_uid,
socket_owner, socket_mode,
socket_backlog)
except ValueError as e:
raise ValueError('%s in [%s] socket' % (str(e), section))
processes=self.processes_from_section(parser, section, program_name,
FastCGIProcessConfig)
groups.append(
FastCGIGroupConfig(self, program_name, priority, processes,
socket_config)
)
groups.sort()
return groups
def parse_fcgi_socket(self, sock, proc_uid, socket_owner, socket_mode,
socket_backlog):
if sock.startswith('unix://'):
path = sock[7:]
#Check it's an absolute path
if not os.path.isabs(path):
raise ValueError("Unix socket path %s is not an absolute path",
path)
path = normalize_path(path)
if socket_owner is None:
uid = os.getuid()
if proc_uid is not None and proc_uid != uid:
socket_owner = (proc_uid, gid_for_uid(proc_uid))
if socket_mode is None:
socket_mode = 0o700
return UnixStreamSocketConfig(path, owner=socket_owner,
mode=socket_mode,
backlog=socket_backlog)
if socket_owner is not None or socket_mode is not None:
raise ValueError("socket_owner and socket_mode params should"
+ " only be used with a Unix domain socket")
m = re.match(r'tcp://([^\s:]+):(\d+)$', sock)
if m:
host = m.group(1)
port = int(m.group(2))
return InetStreamSocketConfig(host, port,
backlog=socket_backlog)
raise ValueError("Bad socket format %s", sock)
def processes_from_section(self, parser, section, group_name,
klass=None):
try:
return self._processes_from_section(
parser, section, group_name, klass)
except ValueError as e:
filename = parser.section_to_file.get(section, self.configfile)
raise ValueError('%s in section %r (file: %r)'
% (e, section, filename))
def _processes_from_section(self, parser, section, group_name,
klass=None):
if klass is None:
klass = ProcessConfig
programs = []
program_name = process_or_group_name(section.split(':', 1)[1])
host_node_name = platform.node()
common_expansions = {'here':self.here,
'program_name':program_name,
'host_node_name':host_node_name,
'group_name':group_name}
def get(section, opt, *args, **kwargs):
expansions = kwargs.get('expansions', {})
expansions.update(common_expansions)
kwargs['expansions'] = expansions
return parser.saneget(section, opt, *args, **kwargs)
priority = integer(get(section, 'priority', 999))
autostart = boolean(get(section, 'autostart', 'true'))
autorestart = auto_restart(get(section, 'autorestart', 'unexpected'))
startsecs = integer(get(section, 'startsecs', 1))
startretries = integer(get(section, 'startretries', 3))
stopsignal = signal_number(get(section, 'stopsignal', 'TERM'))
stopwaitsecs = integer(get(section, 'stopwaitsecs', 10))
stopasgroup = boolean(get(section, 'stopasgroup', 'false'))
killasgroup = boolean(get(section, 'killasgroup', stopasgroup))
exitcodes = list_of_exitcodes(get(section, 'exitcodes', '0'))
# see also redirect_stderr check in process_groups_from_parser()
redirect_stderr = boolean(get(section, 'redirect_stderr','false'))
numprocs = integer(get(section, 'numprocs', 1))
numprocs_start = integer(get(section, 'numprocs_start', 0))
environment_str = get(section, 'environment', '', do_expand=False)
stdout_cmaxbytes = byte_size(get(section,'stdout_capture_maxbytes','0'))
stdout_events = boolean(get(section, 'stdout_events_enabled','false'))
stderr_cmaxbytes = byte_size(get(section,'stderr_capture_maxbytes','0'))
stderr_events = boolean(get(section, 'stderr_events_enabled','false'))
serverurl = get(section, 'serverurl', None)
if serverurl and serverurl.strip().upper() == 'AUTO':
serverurl = None
# find uid from "user" option
user = get(section, 'user', None)
if user is None:
uid = None
else:
uid = name_to_uid(user)
umask = get(section, 'umask', None)
if umask is not None:
umask = octal_type(umask)
process_name = process_or_group_name(
get(section, 'process_name', '%(program_name)s', do_expand=False))
if numprocs > 1:
if not '%(process_num)' in process_name:
# process_name needs to include process_num when we
# represent a group of processes
raise ValueError(
'%(process_num) must be present within process_name when '
'numprocs > 1')
if stopasgroup and not killasgroup:
raise ValueError(
"Cannot set stopasgroup=true and killasgroup=false"
)
for process_num in range(numprocs_start, numprocs + numprocs_start):
expansions = common_expansions
expansions.update({'process_num': process_num, 'numprocs': numprocs})
expansions.update(self.environ_expansions)
environment = dict_of_key_value_pairs(
expand(environment_str, expansions, 'environment'))
# extend expansions for process from [program:x] environment definition
for k, v in environment.items():
expansions['ENV_%s' % k] = v
directory = get(section, 'directory', None)
logfiles = {}
for k in ('stdout', 'stderr'):
lf_key = '%s_logfile' % k
lf_val = get(section, lf_key, Automatic)
if isinstance(lf_val, basestring):
lf_val = expand(lf_val, expansions, lf_key)
lf_val = logfile_name(lf_val)
logfiles[lf_key] = lf_val
bu_key = '%s_logfile_backups' % k
backups = integer(get(section, bu_key, 10))
logfiles[bu_key] = backups
mb_key = '%s_logfile_maxbytes' % k
maxbytes = byte_size(get(section, mb_key, '50MB'))
logfiles[mb_key] = maxbytes
sy_key = '%s_syslog' % k
syslog = boolean(get(section, sy_key, False))
logfiles[sy_key] = syslog
# rewrite deprecated "syslog" magic logfile into the equivalent
# TODO remove this in a future version
if lf_val is Syslog:
self.parse_warnings.append(
'For [%s], %s=syslog but this is deprecated and will '
'be removed. Use %s=true to enable syslog instead.' % (
section, lf_key, sy_key))
logfiles[lf_key] = lf_val = None
logfiles[sy_key] = True
if lf_val is Automatic and not maxbytes:
self.parse_warnings.append(
'For [%s], AUTO logging used for %s without '
'rollover, set maxbytes > 0 to avoid filling up '
'filesystem unintentionally' % (section, lf_key))
if redirect_stderr:
if logfiles['stderr_logfile'] not in (Automatic, None):
self.parse_warnings.append(
'For [%s], redirect_stderr=true but stderr_logfile has '
'also been set to a filename, the filename has been '
'ignored' % section)
# never create an stderr logfile when redirected
logfiles['stderr_logfile'] = None
command = get(section, 'command', None, expansions=expansions)
if command is None:
raise ValueError(
'program section %s does not specify a command' % section)
pconfig = klass(
self,
name=expand(process_name, expansions, 'process_name'),
command=command,
directory=directory,
umask=umask,
priority=priority,
autostart=autostart,
autorestart=autorestart,
startsecs=startsecs,
startretries=startretries,
uid=uid,
stdout_logfile=logfiles['stdout_logfile'],
stdout_capture_maxbytes = stdout_cmaxbytes,
stdout_events_enabled = stdout_events,
stdout_logfile_backups=logfiles['stdout_logfile_backups'],
stdout_logfile_maxbytes=logfiles['stdout_logfile_maxbytes'],
stdout_syslog=logfiles['stdout_syslog'],
stderr_logfile=logfiles['stderr_logfile'],
stderr_capture_maxbytes = stderr_cmaxbytes,
stderr_events_enabled = stderr_events,
stderr_logfile_backups=logfiles['stderr_logfile_backups'],
stderr_logfile_maxbytes=logfiles['stderr_logfile_maxbytes'],
stderr_syslog=logfiles['stderr_syslog'],
stopsignal=stopsignal,
stopwaitsecs=stopwaitsecs,
stopasgroup=stopasgroup,
killasgroup=killasgroup,
exitcodes=exitcodes,
redirect_stderr=redirect_stderr,
environment=environment,
serverurl=serverurl)
programs.append(pconfig)
programs.sort() # asc by priority
return programs
def _parse_servernames(self, parser, stype):
options = []
for section in parser.sections():
if section.startswith(stype):
parts = section.split(':', 1)
if len(parts) > 1:
name = parts[1]
else:
name = None # default sentinel
options.append((name, section))
return options
def _parse_username_and_password(self, parser, section):
get = parser.saneget
username = get(section, 'username', None)
password = get(section, 'password', None)
if username is not None or password is not None:
if username is None or password is None:
raise ValueError(
'Section [%s] contains incomplete authentication: '
'If a username or a password is specified, both the '
'username and password must be specified' % section)
return {'username':username, 'password':password}
def server_configs_from_parser(self, parser):
configs = []
inet_serverdefs = self._parse_servernames(parser, 'inet_http_server')
for name, section in inet_serverdefs:
config = {}
get = parser.saneget
config.update(self._parse_username_and_password(parser, section))
config['name'] = name
config['family'] = socket.AF_INET
port = get(section, 'port', None)
if port is None:
raise ValueError('section [%s] has no port value' % section)
host, port = inet_address(port)
config['host'] = host
config['port'] = port
config['section'] = section
configs.append(config)
unix_serverdefs = self._parse_servernames(parser, 'unix_http_server')
for name, section in unix_serverdefs:
config = {}
get = parser.saneget
sfile = get(section, 'file', None, expansions={'here': self.here})
if sfile is None:
raise ValueError('section [%s] has no file value' % section)
sfile = sfile.strip()
config['name'] = name
config['family'] = socket.AF_UNIX
config['file'] = normalize_path(sfile)
config.update(self._parse_username_and_password(parser, section))
chown = get(section, 'chown', None)
if chown is not None:
try:
chown = colon_separated_user_group(chown)
except ValueError:
raise ValueError('Invalid sockchown value %s' % chown)
else:
chown = (-1, -1)
config['chown'] = chown
chmod = get(section, 'chmod', None)
if chmod is not None:
try:
chmod = octal_type(chmod)
except (TypeError, ValueError):
raise ValueError('Invalid chmod value %s' % chmod)
else:
chmod = 0o700
config['chmod'] = chmod
config['section'] = section
configs.append(config)
return configs
def daemonize(self):
self.poller.before_daemonize()
self._daemonize()
self.poller.after_daemonize()
def _daemonize(self):
# To daemonize, we need to become the leader of our own session
# (process) group. If we do not, signals sent to our
# parent process will also be sent to us. This might be bad because
# signals such as SIGINT can be sent to our parent process during
# normal (uninteresting) operations such as when we press Ctrl-C in the
# parent terminal window to escape from a logtail command.
# To disassociate ourselves from our parent's session group we use
# os.setsid. It means "set session id", which has the effect of
# disassociating a process from is current session and process group
# and setting itself up as a new session leader.
#
# Unfortunately we cannot call setsid if we're already a session group
# leader, so we use "fork" to make a copy of ourselves that is
# guaranteed to not be a session group leader.
#
# We also change directories, set stderr and stdout to null, and
# change our umask.
#
# This explanation was (gratefully) garnered from
# http://www.cems.uwe.ac.uk/~irjohnso/coursenotes/lrc/system/daemons/d3.htm
pid = os.fork()
if pid != 0:
# Parent
self.logger.blather("supervisord forked; parent exiting")
os._exit(0)
# Child
self.logger.info("daemonizing the supervisord process")
if self.directory:
try:
os.chdir(self.directory)
except OSError as err:
self.logger.critical("can't chdir into %r: %s"
% (self.directory, err))
else:
self.logger.info("set current directory: %r"
% self.directory)
os.close(0)
self.stdin = sys.stdin = sys.__stdin__ = open("/dev/null")
os.close(1)
self.stdout = sys.stdout = sys.__stdout__ = open("/dev/null", "w")
os.close(2)
self.stderr = sys.stderr = sys.__stderr__ = open("/dev/null", "w")
os.setsid()
os.umask(self.umask)
# XXX Stevens, in his Advanced Unix book, section 13.3 (page
# 417) recommends calling umask(0) and closing unused
# file descriptors. In his Network Programming book, he
# additionally recommends ignoring SIGHUP and forking again
# after the setsid() call, for obscure SVR4 reasons.
def write_pidfile(self):
pid = os.getpid()
try:
with open(self.pidfile, 'w') as f:
f.write('%s\n' % pid)
except (IOError, OSError):
self.logger.critical('could not write pidfile %s' % self.pidfile)
else:
self.unlink_pidfile = True
self.logger.info('supervisord started with pid %s' % pid)
def cleanup(self):
for config, server in self.httpservers:
if config['family'] == socket.AF_UNIX:
if self.unlink_socketfiles:
socketname = config['file']
self._try_unlink(socketname)
if self.unlink_pidfile:
self._try_unlink(self.pidfile)
self.poller.close()
def _try_unlink(self, path):
try:
os.unlink(path)
except OSError:
pass
def close_httpservers(self):
dispatcher_servers = []
for config, server in self.httpservers:
server.close()
# server._map is a reference to the asyncore socket_map
for dispatcher in self.get_socket_map().values():
dispatcher_server = getattr(dispatcher, 'server', None)
if dispatcher_server is server:
dispatcher_servers.append(dispatcher)
for server in dispatcher_servers:
# TODO: try to remove this entirely.
# For unknown reasons, sometimes an http_channel
# dispatcher in the socket map related to servers
# remains open *during a reload*. If one of these
# exists at this point, we need to close it by hand
# (thus removing it from the asyncore.socket_map). If
# we don't do this, 'cleanup_fds' will cause its file
# descriptor to be closed, but it will still remain in
# the socket_map, and eventually its file descriptor
# will be passed to # select(), which will bomb. See
# also https://web.archive.org/web/20160729222427/http://www.plope.com/software/collector/253
server.close()
def close_logger(self):
self.logger.close()
def setsignals(self):
receive = self.signal_receiver.receive
signal.signal(signal.SIGTERM, receive)
signal.signal(signal.SIGINT, receive)
signal.signal(signal.SIGQUIT, receive)
signal.signal(signal.SIGHUP, receive)
signal.signal(signal.SIGCHLD, receive)
signal.signal(signal.SIGUSR2, receive)
def get_signal(self):
return self.signal_receiver.get_signal()
def openhttpservers(self, supervisord):
try:
self.httpservers = self.make_http_servers(supervisord)
self.unlink_socketfiles = True
except socket.error as why:
if why.args[0] == errno.EADDRINUSE:
self.usage('Another program is already listening on '
'a port that one of our HTTP servers is '
'configured to use. Shut this program '
'down first before starting supervisord.')
else:
help = 'Cannot open an HTTP server: socket.error reported'
errorname = errno.errorcode.get(why.args[0])
if errorname is None:
self.usage('%s %s' % (help, why.args[0]))
else:
self.usage('%s errno.%s (%d)' %
(help, errorname, why.args[0]))
except ValueError as why:
self.usage(why.args[0])
def get_autochildlog_name(self, name, identifier, channel):
prefix='%s-%s---%s-' % (name, channel, identifier)
logfile = self.mktempfile(
suffix='.log',
prefix=prefix,
dir=self.childlogdir)
return logfile
def clear_autochildlogdir(self):
# must be called after realize()
childlogdir = self.childlogdir
fnre = re.compile(r'.+?---%s-\S+\.log\.{0,1}\d{0,4}' % self.identifier)
try:
filenames = os.listdir(childlogdir)
except (IOError, OSError):
self.logger.warn('Could not clear childlog dir')
return
for filename in filenames:
if fnre.match(filename):
pathname = os.path.join(childlogdir, filename)
try:
self.remove(pathname)
except (OSError, IOError):
self.logger.warn('Failed to clean up %r' % pathname)
def get_socket_map(self):
return asyncore.socket_map
def cleanup_fds(self):
# try to close any leaked file descriptors (for reload)
start = 5
os.closerange(start, self.minfds)
def kill(self, pid, signal):
os.kill(pid, signal)
def waitpid(self):
# Need pthread_sigmask here to avoid concurrent sigchld, but Python
# doesn't offer in Python < 3.4. There is still a race condition here;
# we can get a sigchld while we're sitting in the waitpid call.
# However, AFAICT, if waitpid is interrupted by SIGCHLD, as long as we
# call waitpid again (which happens every so often during the normal
# course in the mainloop), we'll eventually reap the child that we
# tried to reap during the interrupted call. At least on Linux, this
# appears to be true, or at least stopping 50 processes at once never
# left zombies laying around.
try:
pid, sts = os.waitpid(-1, os.WNOHANG)
except OSError as exc:
code = exc.args[0]
if code not in (errno.ECHILD, errno.EINTR):
self.logger.critical(
'waitpid error %r; '
'a process may not be cleaned up properly' % code
)
if code == errno.EINTR:
self.logger.blather('EINTR during reap')
pid, sts = None, None
return pid, sts
def drop_privileges(self, user):
"""Drop privileges to become the specified user, which may be a
username or uid. Called for supervisord startup and when spawning
subprocesses. Returns None on success or a string error message if
privileges could not be dropped."""
if user is None:
return "No user specified to setuid to!"
# get uid for user, which can be a number or username
try:
uid = int(user)
except ValueError:
try:
pwrec = pwd.getpwnam(user)
except KeyError:
return "Can't find username %r" % user
uid = pwrec[2]
else:
try:
pwrec = pwd.getpwuid(uid)
except KeyError:
return "Can't find uid %r" % uid
current_uid = os.getuid()
if current_uid == uid:
# do nothing and return successfully if the uid is already the
# current one. this allows a supervisord running as an
# unprivileged user "foo" to start a process where the config
# has "user=foo" (same user) in it.
return
if current_uid != 0:
return "Can't drop privilege as nonroot user"
gid = pwrec[3]
if hasattr(os, 'setgroups'):
user = pwrec[0]
groups = [grprec[2] for grprec in grp.getgrall() if user in
grprec[3]]
# always put our primary gid first in this list, otherwise we can
# lose group info since sometimes the first group in the setgroups
# list gets overwritten on the subsequent setgid call (at least on
# freebsd 9 with python 2.7 - this will be safe though for all unix
# /python version combos)
groups.insert(0, gid)
try:
os.setgroups(groups)
except OSError:
return 'Could not set groups of effective user'
try:
os.setgid(gid)
except OSError:
return 'Could not set group id of effective user'
os.setuid(uid)
def set_uid_or_exit(self):
"""Set the uid of the supervisord process. Called during supervisord
startup only. No return value. Exits the process via usage() if
privileges could not be dropped."""
if self.uid is None:
if os.getuid() == 0:
self.parse_criticals.append('Supervisor is running as root. '
'Privileges were not dropped because no user is '
'specified in the config file. If you intend to run '
'as root, you can set user=root in the config file '
'to avoid this message.')
else:
msg = self.drop_privileges(self.uid)
if msg is None:
self.parse_infos.append('Set uid to user %s succeeded' %
self.uid)
else: # failed to drop privileges
self.usage(msg)
def set_rlimits_or_exit(self):
"""Set the rlimits of the supervisord process. Called during
supervisord startup only. No return value. Exits the process via
usage() if any rlimits could not be set."""
limits = []
if hasattr(resource, 'RLIMIT_NOFILE'):
limits.append(
{
'msg':('The minimum number of file descriptors required '
'to run this process is %(min_limit)s as per the "minfds" '
'command-line argument or config file setting. '
'The current environment will only allow you '
'to open %(hard)s file descriptors. Either raise '
'the number of usable file descriptors in your '
'environment (see README.rst) or lower the '
'minfds setting in the config file to allow '
'the process to start.'),
'min':self.minfds,
'resource':resource.RLIMIT_NOFILE,
'name':'RLIMIT_NOFILE',
})
if hasattr(resource, 'RLIMIT_NPROC'):
limits.append(
{
'msg':('The minimum number of available processes required '
'to run this program is %(min_limit)s as per the "minprocs" '
'command-line argument or config file setting. '
'The current environment will only allow you '
'to open %(hard)s processes. Either raise '
'the number of usable processes in your '
'environment (see README.rst) or lower the '
'minprocs setting in the config file to allow '
'the program to start.'),
'min':self.minprocs,
'resource':resource.RLIMIT_NPROC,
'name':'RLIMIT_NPROC',
})
for limit in limits:
min_limit = limit['min']
res = limit['resource']
msg = limit['msg']
name = limit['name']
name = name # name is used below by locals()
soft, hard = resource.getrlimit(res)
if (soft < min_limit) and (soft != -1): # -1 means unlimited
if (hard < min_limit) and (hard != -1):
# setrlimit should increase the hard limit if we are
# root, if not then setrlimit raises and we print usage
hard = min_limit
try:
resource.setrlimit(res, (min_limit, hard))
self.parse_infos.append('Increased %(name)s limit to '
'%(min_limit)s' % locals())
except (resource.error, ValueError):
self.usage(msg % locals())
def make_logger(self):
# must be called after realize() and after supervisor does setuid()
format = '%(asctime)s %(levelname)s %(message)s\n'
self.logger = loggers.getLogger(self.loglevel)
if self.nodaemon and not self.silent:
loggers.handle_stdout(self.logger, format)
loggers.handle_file(
self.logger,
self.logfile,
format,
rotating=not not self.logfile_maxbytes,
maxbytes=self.logfile_maxbytes,
backups=self.logfile_backups,
)
for msg in self.parse_criticals:
self.logger.critical(msg)
for msg in self.parse_warnings:
self.logger.warn(msg)
for msg in self.parse_infos:
self.logger.info(msg)
def make_http_servers(self, supervisord):
from supervisor.http import make_http_servers
return make_http_servers(self, supervisord)
def close_fd(self, fd):
try:
os.close(fd)
except OSError:
pass
def fork(self):
return os.fork()
def dup2(self, frm, to):
return os.dup2(frm, to)
def setpgrp(self):
return os.setpgrp()
def stat(self, filename):
return os.stat(filename)
def write(self, fd, data):
return os.write(fd, as_bytes(data))
def execve(self, filename, argv, env):
return os.execve(filename, argv, env)
def mktempfile(self, suffix, prefix, dir):
# set os._urandomfd as a hack around bad file descriptor bug
# seen in the wild, see
# https://web.archive.org/web/20160729044005/http://www.plope.com/software/collector/252
os._urandomfd = None
fd, filename = tempfile.mkstemp(suffix, prefix, dir)
os.close(fd)
return filename
def remove(self, path):
os.remove(path)
def _exit(self, code):
os._exit(code)
def setumask(self, mask):
os.umask(mask)
def get_path(self):
"""Return a list corresponding to $PATH, or a default."""
path = ["/bin", "/usr/bin", "/usr/local/bin"]
if "PATH" in os.environ:
p = os.environ["PATH"]
if p:
path = p.split(os.pathsep)
return path
def get_pid(self):
return os.getpid()
def check_execv_args(self, filename, argv, st):
if st is None:
raise NotFound("can't find command %r" % filename)
elif stat.S_ISDIR(st[stat.ST_MODE]):
raise NotExecutable("command at %r is a directory" % filename)
elif not (stat.S_IMODE(st[stat.ST_MODE]) & 0o111):
raise NotExecutable("command at %r is not executable" % filename)
elif not os.access(filename, os.X_OK):
raise NoPermission("no permission to run command %r" % filename)
def reopenlogs(self):
self.logger.info('supervisord logreopen')
for handler in self.logger.handlers:
if hasattr(handler, 'reopen'):
handler.reopen()
def readfd(self, fd):
try:
data = os.read(fd, 2 << 16) # 128K
except OSError as why:
if why.args[0] not in (errno.EWOULDBLOCK, errno.EBADF, errno.EINTR):
raise
data = b''
return data
def chdir(self, dir):
os.chdir(dir)
def make_pipes(self, stderr=True):
""" Create pipes for parent to child stdin/stdout/stderr
communications. Open fd in non-blocking mode so we can read them
in the mainloop without blocking. If stderr is False, don't
create a pipe for stderr. """
pipes = {'child_stdin':None,
'stdin':None,
'stdout':None,
'child_stdout':None,
'stderr':None,
'child_stderr':None}
try:
stdin, child_stdin = os.pipe()
pipes['child_stdin'], pipes['stdin'] = stdin, child_stdin
stdout, child_stdout = os.pipe()
pipes['stdout'], pipes['child_stdout'] = stdout, child_stdout
if stderr:
stderr, child_stderr = os.pipe()
pipes['stderr'], pipes['child_stderr'] = stderr, child_stderr
for fd in (pipes['stdout'], pipes['stderr'], pipes['stdin']):
if fd is not None:
flags = fcntl.fcntl(fd, fcntl.F_GETFL) | os.O_NDELAY
fcntl.fcntl(fd, fcntl.F_SETFL, flags)
return pipes
except OSError:
for fd in pipes.values():
if fd is not None:
self.close_fd(fd)
raise
def close_parent_pipes(self, pipes):
for fdname in ('stdin', 'stdout', 'stderr'):
fd = pipes.get(fdname)
if fd is not None:
self.close_fd(fd)
def close_child_pipes(self, pipes):
for fdname in ('child_stdin', 'child_stdout', 'child_stderr'):
fd = pipes.get(fdname)
if fd is not None:
self.close_fd(fd)
class ClientOptions(Options):
positional_args_allowed = 1
interactive = None
prompt = None
serverurl = None
username = None
password = None
history_file = None
def __init__(self):
Options.__init__(self, require_configfile=False)
self.configroot = Dummy()
self.configroot.supervisorctl = Dummy()
self.configroot.supervisorctl.interactive = None
self.configroot.supervisorctl.prompt = 'supervisor'
self.configroot.supervisorctl.serverurl = None
self.configroot.supervisorctl.username = None
self.configroot.supervisorctl.password = None
self.configroot.supervisorctl.history_file = None
from supervisor.supervisorctl import DefaultControllerPlugin
default_factory = ('default', DefaultControllerPlugin, {})
# we always add the default factory. If you want to a supervisorctl
# without the default plugin, please write your own supervisorctl.
self.plugin_factories = [default_factory]
self.add("interactive", "supervisorctl.interactive", "i",
"interactive", flag=1, default=0)
self.add("prompt", "supervisorctl.prompt", default="supervisor")
self.add("serverurl", "supervisorctl.serverurl", "s:", "serverurl=",
url, default="http://localhost:9001")
self.add("username", "supervisorctl.username", "u:", "username=")
self.add("password", "supervisorctl.password", "p:", "password=")
self.add("history", "supervisorctl.history_file", "r:", "history_file=")
def realize(self, *arg, **kw):
Options.realize(self, *arg, **kw)
if not self.args:
self.interactive = 1
def read_config(self, fp):
section = self.configroot.supervisorctl
need_close = False
if not hasattr(fp, 'read'):
self.here = os.path.dirname(normalize_path(fp))
if not self.exists(fp):
raise ValueError("could not find config file %s" % fp)
try:
fp = self.open(fp, 'r')
need_close = True
except (IOError, OSError):
raise ValueError("could not read config file %s" % fp)
parser = UnhosedConfigParser()
parser.expansions = self.environ_expansions
parser.mysection = 'supervisorctl'
try:
parser.read_file(fp)
except AttributeError:
parser.readfp(fp)
if need_close:
fp.close()
sections = parser.sections()
if not 'supervisorctl' in sections:
raise ValueError('.ini file does not include supervisorctl section')
serverurl = parser.getdefault('serverurl', 'http://localhost:9001',
expansions={'here': self.here})
if serverurl.startswith('unix://'):
path = normalize_path(serverurl[7:])
serverurl = 'unix://%s' % path
section.serverurl = serverurl
# The defaults used below are really set in __init__ (since
# section==self.configroot.supervisorctl)
section.prompt = parser.getdefault('prompt', section.prompt)
section.username = parser.getdefault('username', section.username)
section.password = parser.getdefault('password', section.password)
history_file = parser.getdefault('history_file', section.history_file,
expansions={'here': self.here})
if history_file:
history_file = normalize_path(history_file)
section.history_file = history_file
self.history_file = history_file
else:
section.history_file = None
self.history_file = None
self.plugin_factories += self.get_plugins(
parser,
'supervisor.ctl_factory',
'ctlplugin:'
)
return section
# TODO: not covered by any test, but used by supervisorctl
def getServerProxy(self):
return xmlrpclib.ServerProxy(
# dumbass ServerProxy won't allow us to pass in a non-HTTP url,
# so we fake the url we pass into it and always use the transport's
# 'serverurl' to figure out what to attach to
'http://127.0.0.1',
transport = xmlrpc.SupervisorTransport(self.username,
self.password,
self.serverurl)
)
_marker = []
class UnhosedConfigParser(ConfigParser.RawConfigParser):
mysection = 'supervisord'
def __init__(self, *args, **kwargs):
# inline_comment_prefixes and strict were added in Python 3 but their
# defaults make RawConfigParser behave differently than it did on
# Python 2. We make it work like 2 by default for backwards compat.
if not PY2:
if 'inline_comment_prefixes' not in kwargs:
kwargs['inline_comment_prefixes'] = (';', '#')
if 'strict' not in kwargs:
kwargs['strict'] = False
ConfigParser.RawConfigParser.__init__(self, *args, **kwargs)
self.section_to_file = {}
self.expansions = {}
def read_string(self, string, source='<string>'):
'''Parse configuration data from a string. This is intended
to be used in tests only. We add this method for Py 2/3 compat.'''
try:
return ConfigParser.RawConfigParser.read_string(
self, string, source) # Python 3.2 or later
except AttributeError:
return self.readfp(StringIO(string))
def read(self, filenames, **kwargs):
'''Attempt to read and parse a list of filenames, returning a list
of filenames which were successfully parsed. This is a method of
RawConfigParser that is overridden to build self.section_to_file,
which is a mapping of section names to the files they came from.
'''
if isinstance(filenames, basestring): # RawConfigParser compat
filenames = [filenames]
ok_filenames = []
for filename in filenames:
sections_orig = self._sections.copy()
ok_filenames.extend(
ConfigParser.RawConfigParser.read(self, [filename], **kwargs))
diff = frozenset(self._sections) - frozenset(sections_orig)
for section in diff:
self.section_to_file[section] = filename
return ok_filenames
def saneget(self, section, option, default=_marker, do_expand=True,
expansions={}):
try:
optval = self.get(section, option)
except ConfigParser.NoOptionError:
if default is _marker:
raise
else:
optval = default
if do_expand and isinstance(optval, basestring):
combined_expansions = dict(
list(self.expansions.items()) + list(expansions.items()))
optval = expand(optval, combined_expansions,
"%s.%s" % (section, option))
return optval
def getdefault(self, option, default=_marker, expansions={}, **kwargs):
return self.saneget(self.mysection, option, default=default,
expansions=expansions, **kwargs)
def expand_here(self, here):
HERE_FORMAT = '%(here)s'
for section in self.sections():
for key, value in self.items(section):
if HERE_FORMAT in value:
assert here is not None, "here has not been set to a path"
value = value.replace(HERE_FORMAT, here)
self.set(section, key, value)
class Config(object):
def __ne__(self, other):
return not self.__eq__(other)
def __lt__(self, other):
if self.priority == other.priority:
return self.name < other.name
return self.priority < other.priority
def __le__(self, other):
if self.priority == other.priority:
return self.name <= other.name
return self.priority <= other.priority
def __gt__(self, other):
if self.priority == other.priority:
return self.name > other.name
return self.priority > other.priority
def __ge__(self, other):
if self.priority == other.priority:
return self.name >= other.name
return self.priority >= other.priority
def __repr__(self):
return '<%s instance at %s named %s>' % (self.__class__, id(self),
self.name)
class ProcessConfig(Config):
req_param_names = [
'name', 'uid', 'command', 'directory', 'umask', 'priority',
'autostart', 'autorestart', 'startsecs', 'startretries',
'stdout_logfile', 'stdout_capture_maxbytes',
'stdout_events_enabled', 'stdout_syslog',
'stdout_logfile_backups', 'stdout_logfile_maxbytes',
'stderr_logfile', 'stderr_capture_maxbytes',
'stderr_logfile_backups', 'stderr_logfile_maxbytes',
'stderr_events_enabled', 'stderr_syslog',
'stopsignal', 'stopwaitsecs', 'stopasgroup', 'killasgroup',
'exitcodes', 'redirect_stderr' ]
optional_param_names = [ 'environment', 'serverurl' ]
def __init__(self, options, **params):
self.options = options
for name in self.req_param_names:
setattr(self, name, params[name])
for name in self.optional_param_names:
setattr(self, name, params.get(name, None))
def __eq__(self, other):
if not isinstance(other, ProcessConfig):
return False
for name in self.req_param_names + self.optional_param_names:
if Automatic in [getattr(self, name), getattr(other, name)] :
continue
if getattr(self, name) != getattr(other, name):
return False
return True
def get_path(self):
'''Return a list corresponding to $PATH that is configured to be set
in the process environment, or the system default.'''
if self.environment is not None:
path = self.environment.get('PATH')
if path is not None:
return path.split(os.pathsep)
return self.options.get_path()
def create_autochildlogs(self):
# temporary logfiles which are erased at start time
get_autoname = self.options.get_autochildlog_name
sid = self.options.identifier
name = self.name
if self.stdout_logfile is Automatic:
self.stdout_logfile = get_autoname(name, sid, 'stdout')
if self.stderr_logfile is Automatic:
self.stderr_logfile = get_autoname(name, sid, 'stderr')
def make_process(self, group=None):
from supervisor.process import Subprocess
process = Subprocess(self)
process.group = group
return process
def make_dispatchers(self, proc):
use_stderr = not self.redirect_stderr
p = self.options.make_pipes(use_stderr)
stdout_fd,stderr_fd,stdin_fd = p['stdout'],p['stderr'],p['stdin']
dispatchers = {}
from supervisor.dispatchers import POutputDispatcher
from supervisor.dispatchers import PInputDispatcher
from supervisor import events
if stdout_fd is not None:
etype = events.ProcessCommunicationStdoutEvent
dispatchers[stdout_fd] = POutputDispatcher(proc, etype, stdout_fd)
if stderr_fd is not None:
etype = events.ProcessCommunicationStderrEvent
dispatchers[stderr_fd] = POutputDispatcher(proc,etype, stderr_fd)
if stdin_fd is not None:
dispatchers[stdin_fd] = PInputDispatcher(proc, 'stdin', stdin_fd)
return dispatchers, p
class EventListenerConfig(ProcessConfig):
def make_dispatchers(self, proc):
# always use_stderr=True for eventlisteners because mixing stderr
# messages into stdout would break the eventlistener protocol
use_stderr = True
p = self.options.make_pipes(use_stderr)
stdout_fd,stderr_fd,stdin_fd = p['stdout'],p['stderr'],p['stdin']
dispatchers = {}
from supervisor.dispatchers import PEventListenerDispatcher
from supervisor.dispatchers import PInputDispatcher
from supervisor.dispatchers import POutputDispatcher
from supervisor import events
if stdout_fd is not None:
dispatchers[stdout_fd] = PEventListenerDispatcher(proc, 'stdout',
stdout_fd)
if stderr_fd is not None:
etype = events.ProcessCommunicationStderrEvent
dispatchers[stderr_fd] = POutputDispatcher(proc, etype, stderr_fd)
if stdin_fd is not None:
dispatchers[stdin_fd] = PInputDispatcher(proc, 'stdin', stdin_fd)
return dispatchers, p
class FastCGIProcessConfig(ProcessConfig):
def make_process(self, group=None):
if group is None:
raise NotImplementedError('FastCGI programs require a group')
from supervisor.process import FastCGISubprocess
process = FastCGISubprocess(self)
process.group = group
return process
def make_dispatchers(self, proc):
dispatchers, p = ProcessConfig.make_dispatchers(self, proc)
#FastCGI child processes expect the FastCGI socket set to
#file descriptor 0, so supervisord cannot use stdin
#to communicate with the child process
stdin_fd = p['stdin']
if stdin_fd is not None:
dispatchers[stdin_fd].close()
return dispatchers, p
class ProcessGroupConfig(Config):
def __init__(self, options, name, priority, process_configs):
self.options = options
self.name = name
self.priority = priority
self.process_configs = process_configs
def __eq__(self, other):
if not isinstance(other, ProcessGroupConfig):
return False
if self.name != other.name:
return False
if self.priority != other.priority:
return False
if self.process_configs != other.process_configs:
return False
return True
def after_setuid(self):
for config in self.process_configs:
config.create_autochildlogs()
def make_group(self):
from supervisor.process import ProcessGroup
return ProcessGroup(self)
class EventListenerPoolConfig(Config):
def __init__(self, options, name, priority, process_configs, buffer_size,
pool_events, result_handler):
self.options = options
self.name = name
self.priority = priority
self.process_configs = process_configs
self.buffer_size = buffer_size
self.pool_events = pool_events
self.result_handler = result_handler
def __eq__(self, other):
if not isinstance(other, EventListenerPoolConfig):
return False
if ((self.name == other.name) and
(self.priority == other.priority) and
(self.process_configs == other.process_configs) and
(self.buffer_size == other.buffer_size) and
(self.pool_events == other.pool_events) and
(self.result_handler == other.result_handler)):
return True
return False
def after_setuid(self):
for config in self.process_configs:
config.create_autochildlogs()
def make_group(self):
from supervisor.process import EventListenerPool
return EventListenerPool(self)
class FastCGIGroupConfig(ProcessGroupConfig):
def __init__(self, options, name, priority, process_configs, socket_config):
ProcessGroupConfig.__init__(
self,
options,
name,
priority,
process_configs,
)
self.socket_config = socket_config
def __eq__(self, other):
if not isinstance(other, FastCGIGroupConfig):
return False
if self.socket_config != other.socket_config:
return False
return ProcessGroupConfig.__eq__(self, other)
def make_group(self):
from supervisor.process import FastCGIProcessGroup
return FastCGIProcessGroup(self)
def readFile(filename, offset, length):
""" Read length bytes from the file named by filename starting at
offset """
absoffset = abs(offset)
abslength = abs(length)
try:
with open(filename, 'rb') as f:
if absoffset != offset:
# negative offset returns offset bytes from tail of the file
if length:
raise ValueError('BAD_ARGUMENTS')
f.seek(0, 2)
sz = f.tell()
pos = int(sz - absoffset)
if pos < 0:
pos = 0
f.seek(pos)
data = f.read(absoffset)
else:
if abslength != length:
raise ValueError('BAD_ARGUMENTS')
if length == 0:
f.seek(offset)
data = f.read()
else:
f.seek(offset)
data = f.read(length)
except (OSError, IOError):
raise ValueError('FAILED')
return data
def tailFile(filename, offset, length):
"""
Read length bytes from the file named by filename starting at
offset, automatically increasing offset and setting overflow
flag if log size has grown beyond (offset + length). If length
bytes are not available, as many bytes as are available are returned.
"""
try:
with open(filename, 'rb') as f:
overflow = False
f.seek(0, 2)
sz = f.tell()
if sz > (offset + length):
overflow = True
offset = sz - 1
if (offset + length) > sz:
if offset > (sz - 1):
length = 0
offset = sz - length
if offset < 0:
offset = 0
if length < 0:
length = 0
if length == 0:
data = b''
else:
f.seek(offset)
data = f.read(length)
offset = sz
return [as_string(data), offset, overflow]
except (OSError, IOError):
return ['', offset, False]
# Helpers for dealing with signals and exit status
def decode_wait_status(sts):
"""Decode the status returned by wait() or waitpid().
Return a tuple (exitstatus, message) where exitstatus is the exit
status, or -1 if the process was killed by a signal; and message
is a message telling what happened. It is the caller's
responsibility to display the message.
"""
if os.WIFEXITED(sts):
es = os.WEXITSTATUS(sts) & 0xffff
msg = "exit status %s" % es
return es, msg
elif os.WIFSIGNALED(sts):
sig = os.WTERMSIG(sts)
msg = "terminated by %s" % signame(sig)
if hasattr(os, "WCOREDUMP"):
iscore = os.WCOREDUMP(sts)
else:
iscore = sts & 0x80
if iscore:
msg += " (core dumped)"
return -1, msg
else:
msg = "unknown termination cause 0x%04x" % sts
return -1, msg
_signames = None
def signame(sig):
"""Return a symbolic name for a signal.
Return "signal NNN" if there is no corresponding SIG name in the
signal module.
"""
if _signames is None:
_init_signames()
return _signames.get(sig) or "signal %d" % sig
def _init_signames():
global _signames
d = {}
for k, v in signal.__dict__.items():
k_startswith = getattr(k, "startswith", None)
if k_startswith is None:
continue
if k_startswith("SIG") and not k_startswith("SIG_"):
d[v] = k
_signames = d
class SignalReceiver:
def __init__(self):
self._signals_recvd = []
def receive(self, sig, frame):
if sig not in self._signals_recvd:
self._signals_recvd.append(sig)
def get_signal(self):
if self._signals_recvd:
sig = self._signals_recvd.pop(0)
else:
sig = None
return sig
# miscellaneous utility functions
def expand(s, expansions, name):
try:
return s % expansions
except KeyError as ex:
available = list(expansions.keys())
available.sort()
raise ValueError(
'Format string %r for %r contains names (%s) which cannot be '
'expanded. Available names: %s' %
(s, name, str(ex), ", ".join(available)))
except Exception as ex:
raise ValueError(
'Format string %r for %r is badly formatted: %s' %
(s, name, str(ex))
)
def make_namespec(group_name, process_name):
# we want to refer to the process by its "short name" (a process named
# process1 in the group process1 has a name "process1"). This is for
# backwards compatibility
if group_name == process_name:
name = process_name
else:
name = '%s:%s' % (group_name, process_name)
return name
def split_namespec(namespec):
names = namespec.split(':', 1)
if len(names) == 2:
# group and process name differ
group_name, process_name = names
if not process_name or process_name == '*':
process_name = None
else:
# group name is same as process name
group_name, process_name = namespec, namespec
return group_name, process_name
# exceptions
class ProcessException(Exception):
""" Specialized exceptions used when attempting to start a process """
class BadCommand(ProcessException):
""" Indicates the command could not be parsed properly. """
class NotExecutable(ProcessException):
""" Indicates that the filespec cannot be executed because its path
resolves to a file which is not executable, or which is a directory. """
class NotFound(ProcessException):
""" Indicates that the filespec cannot be executed because it could not
be found """
class NoPermission(ProcessException):
""" Indicates that the file cannot be executed because the supervisor
process does not possess the appropriate UNIX filesystem permission
to execute the file. """