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Current File : /proc/2/task/2/cwd/usr/lib/python3/dist-packages/supervisor//supervisorctl.py
#!/usr/bin/python3 -u

"""supervisorctl -- control applications run by supervisord from the cmd line.

Usage: %s [options] [action [arguments]]

Options:
-c/--configuration FILENAME -- configuration file path (searches if not given)
-h/--help -- print usage message and exit
-i/--interactive -- start an interactive shell after executing commands
-s/--serverurl URL -- URL on which supervisord server is listening
     (default "http://localhost:9001").
-u/--username USERNAME -- username to use for authentication with server
-p/--password PASSWORD -- password to use for authentication with server
-r/--history-file -- keep a readline history (if readline is available)

action [arguments] -- see below

Actions are commands like "tail" or "stop".  If -i is specified or no action is
specified on the command line, a "shell" interpreting actions typed
interactively is started.  Use the action "help" to find out about available
actions.
"""

import cmd
import errno
import getpass
import socket
import sys
import threading

from supervisor.compat import xmlrpclib
from supervisor.compat import urlparse
from supervisor.compat import unicode
from supervisor.compat import raw_input
from supervisor.compat import as_string

from supervisor.medusa import asyncore_25 as asyncore

from supervisor.options import ClientOptions
from supervisor.options import make_namespec
from supervisor.options import split_namespec
from supervisor import xmlrpc
from supervisor import states
from supervisor import http_client

class LSBInitExitStatuses:
    SUCCESS = 0
    GENERIC = 1
    INVALID_ARGS = 2
    UNIMPLEMENTED_FEATURE = 3
    INSUFFICIENT_PRIVILEGES = 4
    NOT_INSTALLED = 5
    NOT_RUNNING = 7

class LSBStatusExitStatuses:
    NOT_RUNNING = 3
    UNKNOWN = 4

DEAD_PROGRAM_FAULTS = (xmlrpc.Faults.SPAWN_ERROR,
                       xmlrpc.Faults.ABNORMAL_TERMINATION,
                       xmlrpc.Faults.NOT_RUNNING)

class fgthread(threading.Thread):
    """ A subclass of threading.Thread, with a kill() method.
    To be used for foreground output/error streaming.
    http://mail.python.org/pipermail/python-list/2004-May/260937.html
    """

    def __init__(self, program, ctl):
        threading.Thread.__init__(self)
        self.killed = False
        self.program = program
        self.ctl = ctl
        self.listener = http_client.Listener()
        self.output_handler = http_client.HTTPHandler(self.listener,
                                                      self.ctl.options.username,
                                                      self.ctl.options.password)
        self.error_handler = http_client.HTTPHandler(self.listener,
                                                     self.ctl.options.username,
                                                     self.ctl.options.password)

    def start(self): # pragma: no cover
        # Start the thread
        self.__run_backup = self.run
        self.run = self.__run
        threading.Thread.start(self)

    def run(self): # pragma: no cover
        self.output_handler.get(self.ctl.options.serverurl,
                                '/logtail/%s/stdout' % self.program)
        self.error_handler.get(self.ctl.options.serverurl,
                               '/logtail/%s/stderr' % self.program)
        asyncore.loop()

    def __run(self): # pragma: no cover
        # Hacked run function, which installs the trace
        sys.settrace(self.globaltrace)
        self.__run_backup()
        self.run = self.__run_backup

    def globaltrace(self, frame, why, arg):
        if why == 'call':
            return self.localtrace
        else:
            return None

    def localtrace(self, frame, why, arg):
        if self.killed:
            if why == 'line':
                raise SystemExit()
        return self.localtrace

    def kill(self):
        self.output_handler.close()
        self.error_handler.close()
        self.killed = True

class Controller(cmd.Cmd):

    def __init__(self, options, completekey='tab', stdin=None,
                 stdout=None):
        self.options = options
        self.prompt = self.options.prompt + '> '
        self.options.plugins = []
        self.vocab = ['help']
        self._complete_info = None
        self.exitstatus = LSBInitExitStatuses.SUCCESS
        cmd.Cmd.__init__(self, completekey, stdin, stdout)
        for name, factory, kwargs in self.options.plugin_factories:
            plugin = factory(self, **kwargs)
            for a in dir(plugin):
                if a.startswith('do_') and callable(getattr(plugin, a)):
                    self.vocab.append(a[3:])
            self.options.plugins.append(plugin)
            plugin.name = name

    def emptyline(self):
        # We don't want a blank line to repeat the last command.
        return

    def default(self, line):
        self.output('*** Unknown syntax: %s' % line)
        self.exitstatus = LSBInitExitStatuses.GENERIC

    def exec_cmdloop(self, args, options):
        try:
            import readline
            delims = readline.get_completer_delims()
            delims = delims.replace(':', '')  # "group:process" as one word
            delims = delims.replace('*', '')  # "group:*" as one word
            delims = delims.replace('-', '')  # names with "-" as one word
            readline.set_completer_delims(delims)

            if options.history_file:
                try:
                    readline.read_history_file(options.history_file)
                except IOError:
                    pass

                def save():
                    try:
                        readline.write_history_file(options.history_file)
                    except IOError:
                        pass

                import atexit
                atexit.register(save)
        except ImportError:
            pass
        try:
            self.cmdqueue.append('status')
            self.cmdloop()
        except KeyboardInterrupt:
            self.output('')
            pass

    def set_exitstatus_from_xmlrpc_fault(self, faultcode, ignored_faultcode=None):
        if faultcode in (ignored_faultcode, xmlrpc.Faults.SUCCESS):
            pass
        elif faultcode in DEAD_PROGRAM_FAULTS:
            self.exitstatus = LSBInitExitStatuses.NOT_RUNNING
        else:
            self.exitstatus = LSBInitExitStatuses.GENERIC

    def onecmd(self, line):
        """ Override the onecmd method to:
          - catch and print all exceptions
          - call 'do_foo' on plugins rather than ourself
        """
        cmd, arg, line = self.parseline(line)
        if not line:
            return self.emptyline()
        if cmd is None:
            return self.default(line)
        self._complete_info = None
        self.lastcmd = line

        if cmd == '':
            return self.default(line)
        else:
            do_func = self._get_do_func(cmd)
            if do_func is None:
                return self.default(line)
            try:
                try:
                    return do_func(arg)
                except xmlrpclib.ProtocolError as e:
                    if e.errcode == 401:
                        if self.options.interactive:
                            self.output('Server requires authentication')
                            username = raw_input('Username:')
                            password = getpass.getpass(prompt='Password:')
                            self.output('')
                            self.options.username = username
                            self.options.password = password
                            return self.onecmd(line)
                        else:
                            self.output('Server requires authentication')
                            self.exitstatus = LSBInitExitStatuses.GENERIC
                    else:
                        self.exitstatus = LSBInitExitStatuses.GENERIC
                        raise
                do_func(arg)
            except Exception:
                (file, fun, line), t, v, tbinfo = asyncore.compact_traceback()
                error = 'error: %s, %s: file: %s line: %s' % (t, v, file, line)
                self.output(error)
                self.exitstatus = LSBInitExitStatuses.GENERIC

    def _get_do_func(self, cmd):
        func_name = 'do_' + cmd
        func = getattr(self, func_name, None)
        if not func:
            for plugin in self.options.plugins:
                func = getattr(plugin, func_name, None)
                if func is not None:
                    break
        return func

    def output(self, message):
        if isinstance(message, unicode):
            message = message.encode('utf-8')
        self.stdout.write(message + '\n')

    def get_supervisor(self):
        return self.get_server_proxy('supervisor')

    def get_server_proxy(self, namespace=None):
        proxy = self.options.getServerProxy()
        if namespace is None:
            return proxy
        else:
            return getattr(proxy, namespace)

    def upcheck(self):
        try:
            supervisor = self.get_supervisor()
            api = supervisor.getVersion() # deprecated
            from supervisor import rpcinterface
            if api != rpcinterface.API_VERSION:
                self.output(
                    'Sorry, this version of supervisorctl expects to '
                    'talk to a server with API version %s, but the '
                    'remote version is %s.' % (rpcinterface.API_VERSION, api))
                self.exitstatus = LSBInitExitStatuses.NOT_INSTALLED
                return False
        except xmlrpclib.Fault as e:
            if e.faultCode == xmlrpc.Faults.UNKNOWN_METHOD:
                self.output(
                    'Sorry, supervisord responded but did not recognize '
                    'the supervisor namespace commands that supervisorctl '
                    'uses to control it.  Please check that the '
                    '[rpcinterface:supervisor] section is enabled in the '
                    'configuration file (see sample.conf).')
                self.exitstatus = LSBInitExitStatuses.UNIMPLEMENTED_FEATURE
                return False
            self.exitstatus = LSBInitExitStatuses.GENERIC
            raise
        except socket.error as e:
            if e.args[0] == errno.ECONNREFUSED:
                self.output('%s refused connection' % self.options.serverurl)
                self.exitstatus = LSBInitExitStatuses.INSUFFICIENT_PRIVILEGES
                return False
            elif e.args[0] == errno.ENOENT:
                self.output('%s no such file' % self.options.serverurl)
                self.exitstatus = LSBInitExitStatuses.NOT_RUNNING
                return False
            self.exitstatus = LSBInitExitStatuses.GENERIC
            raise
        return True

    def complete(self, text, state, line=None):
        """Completer function that Cmd will register with readline using
        readline.set_completer().  This function will be called by readline
        as complete(text, state) where text is a fragment to complete and
        state is an integer (0..n).  Each call returns a string with a new
        completion.  When no more are available, None is returned."""
        if line is None: # line is only set in tests
            import readline
            line = readline.get_line_buffer()

        matches = []
        # blank line completes to action list
        if not line.strip():
            matches = self._complete_actions(text)
        else:
            words = line.split()
            action = words[0]
            # incomplete action completes to action list
            if len(words) == 1 and not line.endswith(' '):
                matches = self._complete_actions(text)
            # actions that accept an action name
            elif action in ('help'):
                matches = self._complete_actions(text)
            # actions that accept a group name
            elif action in ('add', 'remove', 'update'):
                matches = self._complete_groups(text)
            # actions that accept a process name
            elif action in ('clear', 'fg', 'pid', 'restart', 'signal',
                            'start', 'status', 'stop', 'tail'):
                matches = self._complete_processes(text)
        if len(matches) > state:
            return matches[state]

    def _complete_actions(self, text):
        """Build a completion list of action names matching text"""
        return [ a + ' ' for a in self.vocab if a.startswith(text)]

    def _complete_groups(self, text):
        """Build a completion list of group names matching text"""
        groups = []
        for info in self._get_complete_info():
            if info['group'] not in groups:
                groups.append(info['group'])
        return [ g + ' ' for g in groups if g.startswith(text) ]

    def _complete_processes(self, text):
        """Build a completion list of process names matching text"""
        processes = []
        for info in self._get_complete_info():
            if ':' in text or info['name'] != info['group']:
                processes.append('%s:%s' % (info['group'], info['name']))
                if '%s:*' % info['group'] not in processes:
                    processes.append('%s:*' % info['group'])
            else:
                processes.append(info['name'])
        return [ p + ' ' for p in processes if p.startswith(text) ]

    def _get_complete_info(self):
        """Get all process info used for completion.  We cache this between
        commands to reduce XML-RPC calls because readline may call
        complete() many times if the user hits tab only once."""
        if self._complete_info is None:
            self._complete_info = self.get_supervisor().getAllProcessInfo()
        return self._complete_info

    def do_help(self, arg):
        if arg.strip() == 'help':
            self.help_help()
        else:
            for plugin in self.options.plugins:
                plugin.do_help(arg)

    def help_help(self):
        self.output("help\t\tPrint a list of available actions")
        self.output("help <action>\tPrint help for <action>")

    def do_EOF(self, arg):
        self.output('')
        return 1

    def help_EOF(self):
        self.output("To quit, type ^D or use the quit command")

def get_names(inst):
    names = []
    classes = [inst.__class__]
    while classes:
        aclass = classes.pop(0)
        if aclass.__bases__:
            classes = classes + list(aclass.__bases__)
        names = names + dir(aclass)
    return names

class ControllerPluginBase:
    name = 'unnamed'

    def __init__(self, controller):
        self.ctl = controller

    def _doc_header(self):
        return "%s commands (type help <topic>):" % self.name
    doc_header = property(_doc_header)

    def do_help(self, arg):
        if arg:
            # XXX check arg syntax
            try:
                func = getattr(self, 'help_' + arg)
            except AttributeError:
                try:
                    doc = getattr(self, 'do_' + arg).__doc__
                    if doc:
                        self.ctl.output(doc)
                        return
                except AttributeError:
                    pass
                self.ctl.output(self.ctl.nohelp % (arg,))
                return
            func()
        else:
            names = get_names(self)
            cmds_doc = []
            cmds_undoc = []
            help = {}
            for name in names:
                if name[:5] == 'help_':
                    help[name[5:]]=1
            names.sort()
            # There can be duplicates if routines overridden
            prevname = ''
            for name in names:
                if name[:3] == 'do_':
                    if name == prevname:
                        continue
                    prevname = name
                    cmd=name[3:]
                    if cmd in help:
                        cmds_doc.append(cmd)
                        del help[cmd]
                    elif getattr(self, name).__doc__:
                        cmds_doc.append(cmd)
                    else:
                        cmds_undoc.append(cmd)
            self.ctl.output('')
            self.ctl.print_topics(self.doc_header, cmds_doc, 15, 80)

def not_all_langs():
    enc = getattr(sys.stdout, 'encoding', None) or ''
    return None if enc.lower().startswith('utf') else sys.stdout.encoding

def check_encoding(ctl):
    problematic_enc = not_all_langs()
    if problematic_enc:
        ctl.output('Warning: sys.stdout.encoding is set to %s, so Unicode '
                   'output may fail. Check your LANG and PYTHONIOENCODING '
                   'environment settings.' % problematic_enc)

class DefaultControllerPlugin(ControllerPluginBase):
    name = 'default'
    listener = None # for unit tests
    def _tailf(self, path):
        check_encoding(self.ctl)
        self.ctl.output('==> Press Ctrl-C to exit <==')

        username = self.ctl.options.username
        password = self.ctl.options.password
        handler = None
        try:
            # Python's urllib2 (at least as of Python 2.4.2) isn't up
            # to this task; it doesn't actually implement a proper
            # HTTP/1.1 client that deals with chunked responses (it
            # always sends a Connection: close header).  We use a
            # homegrown client based on asyncore instead.  This makes
            # me sad.
            if self.listener is None:
                listener = http_client.Listener()
            else:
                listener = self.listener # for unit tests
            handler = http_client.HTTPHandler(listener, username, password)
            handler.get(self.ctl.options.serverurl, path)
            asyncore.loop()
        except KeyboardInterrupt:
            if handler:
                handler.close()
            self.ctl.output('')
            return

    def do_tail(self, arg):
        if not self.ctl.upcheck():
            return

        args = arg.split()

        if len(args) < 1:
            self.ctl.output('Error: too few arguments')
            self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
            self.help_tail()
            return

        elif len(args) > 3:
            self.ctl.output('Error: too many arguments')
            self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
            self.help_tail()
            return

        modifier = None

        if args[0].startswith('-'):
            modifier = args.pop(0)

        if len(args) == 1:
            name = args[-1]
            channel = 'stdout'
        else:
            if args:
                name = args[0]
                channel = args[-1].lower()
                if channel not in ('stderr', 'stdout'):
                    self.ctl.output('Error: bad channel %r' % channel)
                    self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
                    return
            else:
                self.ctl.output('Error: tail requires process name')
                self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
                return

        bytes = 1600

        if modifier is not None:
            what = modifier[1:]
            if what == 'f':
                bytes = None
            else:
                try:
                    bytes = int(what)
                except:
                    self.ctl.output('Error: bad argument %s' % modifier)
                    self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
                    return

        supervisor = self.ctl.get_supervisor()

        if bytes is None:
            return self._tailf('/logtail/%s/%s' % (name, channel))

        else:
            check_encoding(self.ctl)
            try:
                if channel == 'stdout':
                    output = supervisor.readProcessStdoutLog(name,
                                                             -bytes, 0)
                else:
                    output = supervisor.readProcessStderrLog(name,
                                                             -bytes, 0)
            except xmlrpclib.Fault as e:
                self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
                template = '%s: ERROR (%s)'
                if e.faultCode == xmlrpc.Faults.NO_FILE:
                    self.ctl.output(template % (name, 'no log file'))
                elif e.faultCode == xmlrpc.Faults.FAILED:
                    self.ctl.output(template % (name,
                                             'unknown error reading log'))
                elif e.faultCode == xmlrpc.Faults.BAD_NAME:
                    self.ctl.output(template % (name,
                                             'no such process name'))
                else:
                    raise
            else:
                self.ctl.output(output)

    def help_tail(self):
        self.ctl.output(
            "tail [-f] <name> [stdout|stderr] (default stdout)\n"
            "Ex:\n"
            "tail -f <name>\t\tContinuous tail of named process stdout\n"
            "\t\t\tCtrl-C to exit.\n"
            "tail -100 <name>\tlast 100 *bytes* of process stdout\n"
            "tail <name> stderr\tlast 1600 *bytes* of process stderr"
            )

    def do_maintail(self, arg):
        if not self.ctl.upcheck():
            return

        args = arg.split()

        if len(args) > 1:
            self.ctl.output('Error: too many arguments')
            self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
            self.help_maintail()
            return

        elif len(args) == 1:
            if args[0].startswith('-'):
                what = args[0][1:]
                if what == 'f':
                    path = '/mainlogtail'
                    return self._tailf(path)
                try:
                    what = int(what)
                except:
                    self.ctl.output('Error: bad argument %s' % args[0])
                    self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
                    return
                else:
                    bytes = what
            else:
                self.ctl.output('Error: bad argument %s' % args[0])
                self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
                return

        else:
            bytes = 1600

        supervisor = self.ctl.get_supervisor()

        try:
            output = supervisor.readLog(-bytes, 0)
        except xmlrpclib.Fault as e:
            self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
            template = '%s: ERROR (%s)'
            if e.faultCode == xmlrpc.Faults.NO_FILE:
                self.ctl.output(template % ('supervisord', 'no log file'))
            elif e.faultCode == xmlrpc.Faults.FAILED:
                self.ctl.output(template % ('supervisord',
                                         'unknown error reading log'))
            else:
                raise
        else:
            self.ctl.output(output)

    def help_maintail(self):
        self.ctl.output(
            "maintail -f \tContinuous tail of supervisor main log file"
            " (Ctrl-C to exit)\n"
            "maintail -100\tlast 100 *bytes* of supervisord main log file\n"
            "maintail\tlast 1600 *bytes* of supervisor main log file\n"
            )

    def do_quit(self, arg):
        return self.ctl.do_EOF(arg)

    def help_quit(self):
        self.ctl.output("quit\tExit the supervisor shell.")

    do_exit = do_quit

    def help_exit(self):
        self.ctl.output("exit\tExit the supervisor shell.")

    def _show_statuses(self, process_infos):
        namespecs, maxlen = [], 30
        for i, info in enumerate(process_infos):
            namespecs.append(make_namespec(info['group'], info['name']))
            if len(namespecs[i]) > maxlen:
                maxlen = len(namespecs[i])

        template = '%(namespec)-' + str(maxlen+3) + 's%(state)-10s%(desc)s'
        for i, info in enumerate(process_infos):
            line = template % {'namespec': namespecs[i],
                               'state': info['statename'],
                               'desc': info['description']}
            self.ctl.output(line)

    def do_status(self, arg):
        # XXX In case upcheck fails, we override the exitstatus which
        # should only return 4 for do_status
        # TODO review this
        if not self.ctl.upcheck():
            self.ctl.exitstatus = LSBStatusExitStatuses.UNKNOWN
            return

        supervisor = self.ctl.get_supervisor()
        all_infos = supervisor.getAllProcessInfo()

        names = as_string(arg).split()
        if not names or "all" in names:
            matching_infos = all_infos
        else:
            matching_infos = []

            for name in names:
                bad_name = True
                group_name, process_name = split_namespec(name)

                for info in all_infos:
                    matched = info['group'] == group_name
                    if process_name is not None:
                        matched = matched and info['name'] == process_name

                    if matched:
                        bad_name = False
                        matching_infos.append(info)

                if bad_name:
                    if process_name is None:
                        msg = "%s: ERROR (no such group)" % group_name
                    else:
                        msg = "%s: ERROR (no such process)" % name
                    self.ctl.output(msg)
                    self.ctl.exitstatus = LSBStatusExitStatuses.UNKNOWN
        self._show_statuses(matching_infos)

        for info in matching_infos:
            if info['state'] in states.STOPPED_STATES:
                self.ctl.exitstatus = LSBStatusExitStatuses.NOT_RUNNING

    def help_status(self):
        self.ctl.output("status <name>\t\tGet status for a single process")
        self.ctl.output("status <gname>:*\tGet status for all "
                        "processes in a group")
        self.ctl.output("status <name> <name>\tGet status for multiple named "
                        "processes")
        self.ctl.output("status\t\t\tGet all process status info")

    def do_pid(self, arg):
        supervisor = self.ctl.get_supervisor()
        if not self.ctl.upcheck():
            return
        names = arg.split()
        if not names:
            pid = supervisor.getPID()
            self.ctl.output(str(pid))
        elif 'all' in names:
            for info in supervisor.getAllProcessInfo():
                self.ctl.output(str(info['pid']))
        else:
            for name in names:
                try:
                    info = supervisor.getProcessInfo(name)
                except xmlrpclib.Fault as e:
                    self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
                    if e.faultCode == xmlrpc.Faults.BAD_NAME:
                        self.ctl.output('No such process %s' % name)
                    else:
                        raise
                else:
                    pid = info['pid']
                    self.ctl.output(str(pid))
                    if pid == 0:
                        self.ctl.exitstatus = LSBInitExitStatuses.NOT_RUNNING

    def help_pid(self):
        self.ctl.output("pid\t\t\tGet the PID of supervisord.")
        self.ctl.output("pid <name>\t\tGet the PID of a single "
            "child process by name.")
        self.ctl.output("pid all\t\t\tGet the PID of every child "
            "process, one per line.")

    def _startresult(self, result):
        name = make_namespec(result['group'], result['name'])
        code = result['status']
        template = '%s: ERROR (%s)'
        if code == xmlrpc.Faults.BAD_NAME:
            return template % (name, 'no such process')
        elif code == xmlrpc.Faults.NO_FILE:
            return template % (name, 'no such file')
        elif code == xmlrpc.Faults.NOT_EXECUTABLE:
            return template % (name, 'file is not executable')
        elif code == xmlrpc.Faults.ALREADY_STARTED:
            return template % (name, 'already started')
        elif code == xmlrpc.Faults.SPAWN_ERROR:
            return template % (name, 'spawn error')
        elif code == xmlrpc.Faults.ABNORMAL_TERMINATION:
            return template % (name, 'abnormal termination')
        elif code == xmlrpc.Faults.SUCCESS:
            return '%s: started' % name
        # assertion
        raise ValueError('Unknown result code %s for %s' % (code, name))

    def do_start(self, arg):
        if not self.ctl.upcheck():
            return

        names = arg.split()
        supervisor = self.ctl.get_supervisor()

        if not names:
            self.ctl.output("Error: start requires a process name")
            self.ctl.exitstatus = LSBInitExitStatuses.INVALID_ARGS
            self.help_start()
            return

        if 'all' in names:
            results = supervisor.startAllProcesses()
            for result in results:
                self.ctl.output(self._startresult(result))
                self.ctl.set_exitstatus_from_xmlrpc_fault(result['status'], xmlrpc.Faults.ALREADY_STARTED)
        else:
            for name in names:
                group_name, process_name = split_namespec(name)
                if process_name is None:
                    try:
                        results = supervisor.startProcessGroup(group_name)
                        for result in results:
                            self.ctl.output(self._startresult(result))
                            self.ctl.set_exitstatus_from_xmlrpc_fault(result['status'], xmlrpc.Faults.ALREADY_STARTED)
                    except xmlrpclib.Fault as e:
                        if e.faultCode == xmlrpc.Faults.BAD_NAME:
                            error = "%s: ERROR (no such group)" % group_name
                            self.ctl.output(error)
                            self.ctl.exitstatus = LSBInitExitStatuses.INVALID_ARGS
                        else:
                            self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
                            raise
                else:
                    try:
                        result = supervisor.startProcess(name)
                    except xmlrpclib.Fault as e:
                        error = {'status': e.faultCode,
                                  'name': process_name,
                                  'group': group_name,
                                  'description': e.faultString}
                        self.ctl.output(self._startresult(error))
                        self.ctl.set_exitstatus_from_xmlrpc_fault(error['status'], xmlrpc.Faults.ALREADY_STARTED)
                    else:
                        name = make_namespec(group_name, process_name)
                        self.ctl.output('%s: started' % name)

    def help_start(self):
        self.ctl.output("start <name>\t\tStart a process")
        self.ctl.output("start <gname>:*\t\tStart all processes in a group")
        self.ctl.output(
            "start <name> <name>\tStart multiple processes or groups")
        self.ctl.output("start all\t\tStart all processes")

    def _signalresult(self, result, success='signalled'):
        name = make_namespec(result['group'], result['name'])
        code = result['status']
        fault_string = result['description']
        template = '%s: ERROR (%s)'
        if code == xmlrpc.Faults.BAD_NAME:
            return template % (name, 'no such process')
        elif code == xmlrpc.Faults.BAD_SIGNAL:
            return template % (name, 'bad signal name')
        elif code == xmlrpc.Faults.NOT_RUNNING:
            return template % (name, 'not running')
        elif code == xmlrpc.Faults.SUCCESS:
            return '%s: %s' % (name, success)
        elif code == xmlrpc.Faults.FAILED:
            return fault_string
        # assertion
        raise ValueError('Unknown result code %s for %s' % (code, name))

    def _stopresult(self, result):
        return self._signalresult(result, success='stopped')

    def do_stop(self, arg):
        if not self.ctl.upcheck():
            return

        names = arg.split()
        supervisor = self.ctl.get_supervisor()

        if not names:
            self.ctl.output('Error: stop requires a process name')
            self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
            self.help_stop()
            return

        if 'all' in names:
            results = supervisor.stopAllProcesses()
            for result in results:
                self.ctl.output(self._stopresult(result))
                self.ctl.set_exitstatus_from_xmlrpc_fault(result['status'], xmlrpc.Faults.NOT_RUNNING)
        else:
            for name in names:
                group_name, process_name = split_namespec(name)
                if process_name is None:
                    try:
                        results = supervisor.stopProcessGroup(group_name)

                        for result in results:
                            self.ctl.output(self._stopresult(result))
                            self.ctl.set_exitstatus_from_xmlrpc_fault(result['status'], xmlrpc.Faults.NOT_RUNNING)
                    except xmlrpclib.Fault as e:
                        self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
                        if e.faultCode == xmlrpc.Faults.BAD_NAME:
                            error = "%s: ERROR (no such group)" % group_name
                            self.ctl.output(error)
                        else:
                            raise
                else:
                    try:
                        supervisor.stopProcess(name)
                    except xmlrpclib.Fault as e:
                        error = {'status': e.faultCode,
                                 'name': process_name,
                                 'group': group_name,
                                 'description':e.faultString}
                        self.ctl.output(self._stopresult(error))
                        self.ctl.set_exitstatus_from_xmlrpc_fault(error['status'], xmlrpc.Faults.NOT_RUNNING)
                    else:
                        name = make_namespec(group_name, process_name)
                        self.ctl.output('%s: stopped' % name)

    def help_stop(self):
        self.ctl.output("stop <name>\t\tStop a process")
        self.ctl.output("stop <gname>:*\t\tStop all processes in a group")
        self.ctl.output("stop <name> <name>\tStop multiple processes or groups")
        self.ctl.output("stop all\t\tStop all processes")

    def do_signal(self, arg):
        if not self.ctl.upcheck():
            return

        args = arg.split()
        if len(args) < 2:
            self.ctl.output(
                'Error: signal requires a signal name and a process name')
            self.help_signal()
            self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
            return

        sig = args[0]
        names = args[1:]
        supervisor = self.ctl.get_supervisor()

        if 'all' in names:
            results = supervisor.signalAllProcesses(sig)

            for result in results:
                self.ctl.output(self._signalresult(result))
                self.ctl.set_exitstatus_from_xmlrpc_fault(result['status'])
        else:
            for name in names:
                group_name, process_name = split_namespec(name)
                if process_name is None:
                    try:
                        results = supervisor.signalProcessGroup(
                            group_name, sig
                            )
                        for result in results:
                            self.ctl.output(self._signalresult(result))
                            self.ctl.set_exitstatus_from_xmlrpc_fault(result['status'])
                    except xmlrpclib.Fault as e:
                        if e.faultCode == xmlrpc.Faults.BAD_NAME:
                            error = "%s: ERROR (no such group)" % group_name
                            self.ctl.output(error)
                            self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
                        else:
                            raise
                else:
                    try:
                        supervisor.signalProcess(name, sig)
                    except xmlrpclib.Fault as e:
                        error = {'status': e.faultCode,
                                 'name': process_name,
                                 'group': group_name,
                                 'description':e.faultString}
                        self.ctl.output(self._signalresult(error))
                        self.ctl.set_exitstatus_from_xmlrpc_fault(error['status'])
                    else:
                        name = make_namespec(group_name, process_name)
                        self.ctl.output('%s: signalled' % name)

    def help_signal(self):
        self.ctl.output("signal <signal name> <name>\t\tSignal a process")
        self.ctl.output("signal <signal name> <gname>:*\t\tSignal all processes in a group")
        self.ctl.output("signal <signal name> <name> <name>\tSignal multiple processes or groups")
        self.ctl.output("signal <signal name> all\t\tSignal all processes")

    def do_restart(self, arg):
        if not self.ctl.upcheck():
            return

        names = arg.split()

        if not names:
            self.ctl.output('Error: restart requires a process name')
            self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
            self.help_restart()
            return

        self.do_stop(arg)
        self.do_start(arg)

    def help_restart(self):
        self.ctl.output("restart <name>\t\tRestart a process")
        self.ctl.output("restart <gname>:*\tRestart all processes in a group")
        self.ctl.output("restart <name> <name>\tRestart multiple processes or "
                     "groups")
        self.ctl.output("restart all\t\tRestart all processes")
        self.ctl.output("Note: restart does not reread config files. For that,"
                        " see reread and update.")

    def do_shutdown(self, arg):
        if arg:
            self.ctl.output('Error: shutdown accepts no arguments')
            self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
            self.help_shutdown()
            return

        if self.ctl.options.interactive:
            yesno = raw_input('Really shut the remote supervisord process '
                              'down y/N? ')
            really = yesno.lower().startswith('y')
        else:
            really = 1

        if really:
            supervisor = self.ctl.get_supervisor()
            try:
                supervisor.shutdown()
            except xmlrpclib.Fault as e:
                if e.faultCode == xmlrpc.Faults.SHUTDOWN_STATE:
                    self.ctl.output('ERROR: already shutting down')
                else:
                    self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
                    raise
            except socket.error as e:
                self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
                if e.args[0] == errno.ECONNREFUSED:
                    msg = 'ERROR: %s refused connection (already shut down?)'
                    self.ctl.output(msg % self.ctl.options.serverurl)
                elif e.args[0] == errno.ENOENT:
                    msg = 'ERROR: %s no such file (already shut down?)'
                    self.ctl.output(msg % self.ctl.options.serverurl)
                else:
                    raise
            else:
                self.ctl.output('Shut down')

    def help_shutdown(self):
        self.ctl.output("shutdown \tShut the remote supervisord down.")

    def do_reload(self, arg):
        if arg:
            self.ctl.output('Error: reload accepts no arguments')
            self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
            self.help_reload()
            return

        if self.ctl.options.interactive:
            yesno = raw_input('Really restart the remote supervisord process '
                              'y/N? ')
            really = yesno.lower().startswith('y')
        else:
            really = 1
        if really:
            supervisor = self.ctl.get_supervisor()
            try:
                supervisor.restart()
            except xmlrpclib.Fault as e:
                self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
                if e.faultCode == xmlrpc.Faults.SHUTDOWN_STATE:
                    self.ctl.output('ERROR: already shutting down')
                else:
                    raise
            else:
                self.ctl.output('Restarted supervisord')

    def help_reload(self):
        self.ctl.output("reload \t\tRestart the remote supervisord.")

    def _formatChanges(self, added_changed_dropped_tuple):
        added, changed, dropped = added_changed_dropped_tuple
        changedict = {}
        for n, t in [(added, 'available'),
                     (changed, 'changed'),
                     (dropped, 'disappeared')]:
            changedict.update(dict(zip(n, [t] * len(n))))

        if changedict:
            names = list(changedict.keys())
            names.sort()
            for name in names:
                self.ctl.output("%s: %s" % (name, changedict[name]))
        else:
            self.ctl.output("No config updates to processes")

    def _formatConfigInfo(self, configinfo):
        name = make_namespec(configinfo['group'], configinfo['name'])
        formatted = { 'name': name }
        if configinfo['inuse']:
            formatted['inuse'] = 'in use'
        else:
            formatted['inuse'] = 'avail'
        if configinfo['autostart']:
            formatted['autostart'] = 'auto'
        else:
            formatted['autostart'] = 'manual'
        formatted['priority'] = "%s:%s" % (configinfo['group_prio'],
                                           configinfo['process_prio'])

        template = '%(name)-32s %(inuse)-9s %(autostart)-9s %(priority)s'
        return template % formatted

    def do_avail(self, arg):
        if arg:
            self.ctl.output('Error: avail accepts no arguments')
            self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
            self.help_avail()
            return

        supervisor = self.ctl.get_supervisor()
        try:
            configinfo = supervisor.getAllConfigInfo()
        except xmlrpclib.Fault as e:
            self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
            if e.faultCode == xmlrpc.Faults.SHUTDOWN_STATE:
                self.ctl.output('ERROR: supervisor shutting down')
            else:
                raise
        else:
            for pinfo in configinfo:
                self.ctl.output(self._formatConfigInfo(pinfo))

    def help_avail(self):
        self.ctl.output("avail\t\t\tDisplay all configured processes")

    def do_reread(self, arg):
        if arg:
            self.ctl.output('Error: reread accepts no arguments')
            self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
            self.help_reread()
            return

        supervisor = self.ctl.get_supervisor()
        try:
            result = supervisor.reloadConfig()
        except xmlrpclib.Fault as e:
            self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
            if e.faultCode == xmlrpc.Faults.SHUTDOWN_STATE:
                self.ctl.output('ERROR: supervisor shutting down')
            elif e.faultCode == xmlrpc.Faults.CANT_REREAD:
                self.ctl.output("ERROR: %s" % e.faultString)
            else:
                raise
        else:
            self._formatChanges(result[0])

    def help_reread(self):
        self.ctl.output("reread \t\t\tReload the daemon's configuration files without add/remove")

    def do_add(self, arg):
        names = arg.split()

        supervisor = self.ctl.get_supervisor()
        for name in names:
            try:
                supervisor.addProcessGroup(name)
            except xmlrpclib.Fault as e:
                if e.faultCode == xmlrpc.Faults.SHUTDOWN_STATE:
                    self.ctl.output('ERROR: shutting down')
                    self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
                elif e.faultCode == xmlrpc.Faults.ALREADY_ADDED:
                    self.ctl.output('ERROR: process group already active')
                elif e.faultCode == xmlrpc.Faults.BAD_NAME:
                    self.ctl.output("ERROR: no such process/group: %s" % name)
                    self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
                else:
                    self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
                    raise
            else:
                self.ctl.output("%s: added process group" % name)

    def help_add(self):
        self.ctl.output("add <name> [...]\tActivates any updates in config "
                        "for process/group")

    def do_remove(self, arg):
        names = arg.split()

        supervisor = self.ctl.get_supervisor()
        for name in names:
            try:
                supervisor.removeProcessGroup(name)
            except xmlrpclib.Fault as e:
                self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
                if e.faultCode == xmlrpc.Faults.STILL_RUNNING:
                    self.ctl.output('ERROR: process/group still running: %s'
                                      % name)
                elif e.faultCode == xmlrpc.Faults.BAD_NAME:
                    self.ctl.output("ERROR: no such process/group: %s" % name)
                else:
                    raise
            else:
                self.ctl.output("%s: removed process group" % name)

    def help_remove(self):
        self.ctl.output("remove <name> [...]\tRemoves process/group from "
                        "active config")

    def do_update(self, arg):
        def log(name, message):
            self.ctl.output("%s: %s" % (name, message))

        supervisor = self.ctl.get_supervisor()
        try:
            result = supervisor.reloadConfig()
        except xmlrpclib.Fault as e:
            self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
            if e.faultCode == xmlrpc.Faults.SHUTDOWN_STATE:
                self.ctl.output('ERROR: already shutting down')
                return
            else:
                raise

        added, changed, removed = result[0]
        valid_gnames = set(arg.split())

        # If all is specified treat it as if nothing was specified.
        if "all" in valid_gnames:
            valid_gnames = set()

        # If any gnames are specified we need to verify that they are
        # valid in order to print a useful error message.
        if valid_gnames:
            groups = set()
            for info in supervisor.getAllProcessInfo():
                groups.add(info['group'])
            # New gnames would not currently exist in this set so
            # add those as well.
            groups.update(added)

            for gname in valid_gnames:
                if gname not in groups:
                    self.ctl.output('ERROR: no such group: %s' % gname)
                    self.ctl.exitstatus = LSBInitExitStatuses.GENERIC

        for gname in removed:
            if valid_gnames and gname not in valid_gnames:
                continue
            results = supervisor.stopProcessGroup(gname)
            log(gname, "stopped")

            fails = [res for res in results
                     if res['status'] == xmlrpc.Faults.FAILED]
            if fails:
                self.ctl.output("%s: %s" % (gname, "has problems; not removing"))
                self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
                continue
            supervisor.removeProcessGroup(gname)
            log(gname, "removed process group")

        for gname in changed:
            if valid_gnames and gname not in valid_gnames:
                continue
            supervisor.stopProcessGroup(gname)
            log(gname, "stopped")

            supervisor.removeProcessGroup(gname)
            supervisor.addProcessGroup(gname)
            log(gname, "updated process group")

        for gname in added:
            if valid_gnames and gname not in valid_gnames:
                continue
            supervisor.addProcessGroup(gname)
            log(gname, "added process group")

    def help_update(self):
        self.ctl.output("update\t\t\tReload config and add/remove as necessary, and will restart affected programs")
        self.ctl.output("update all\t\tReload config and add/remove as necessary, and will restart affected programs")
        self.ctl.output("update <gname> [...]\tUpdate specific groups")

    def _clearresult(self, result):
        name = make_namespec(result['group'], result['name'])
        code = result['status']
        template = '%s: ERROR (%s)'
        if code == xmlrpc.Faults.BAD_NAME:
            return template % (name, 'no such process')
        elif code == xmlrpc.Faults.FAILED:
            return template % (name, 'failed')
        elif code == xmlrpc.Faults.SUCCESS:
            return '%s: cleared' % name
        raise ValueError('Unknown result code %s for %s' % (code, name))

    def do_clear(self, arg):
        if not self.ctl.upcheck():
            return

        names = arg.split()

        if not names:
            self.ctl.output('Error: clear requires a process name')
            self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
            self.help_clear()
            return

        supervisor = self.ctl.get_supervisor()

        if 'all' in names:
            results = supervisor.clearAllProcessLogs()
            for result in results:
                self.ctl.output(self._clearresult(result))
                self.ctl.set_exitstatus_from_xmlrpc_fault(result['status'])
        else:
            for name in names:
                group_name, process_name = split_namespec(name)
                try:
                    supervisor.clearProcessLogs(name)
                except xmlrpclib.Fault as e:
                    error = {'status': e.faultCode,
                             'name': process_name,
                             'group': group_name,
                             'description': e.faultString}
                    self.ctl.output(self._clearresult(error))
                    self.ctl.set_exitstatus_from_xmlrpc_fault(error['status'])
                else:
                    name = make_namespec(group_name, process_name)
                    self.ctl.output('%s: cleared' % name)

    def help_clear(self):
        self.ctl.output("clear <name>\t\tClear a process' log files.")
        self.ctl.output(
            "clear <name> <name>\tClear multiple process' log files")
        self.ctl.output("clear all\t\tClear all process' log files")

    def do_open(self, arg):
        url = arg.strip()
        parts = urlparse.urlparse(url)
        if parts[0] not in ('unix', 'http'):
            self.ctl.output('ERROR: url must be http:// or unix://')
            self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
            return
        self.ctl.options.serverurl = url
        # TODO review this
        old_exitstatus = self.ctl.exitstatus
        self.do_status('')
        self.ctl.exitstatus = old_exitstatus

    def help_open(self):
        self.ctl.output("open <url>\tConnect to a remote supervisord process.")
        self.ctl.output("\t\t(for UNIX domain socket, use unix:///socket/path)")

    def do_version(self, arg):
        if arg:
            self.ctl.output('Error: version accepts no arguments')
            self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
            self.help_version()
            return

        if not self.ctl.upcheck():
            return
        supervisor = self.ctl.get_supervisor()
        self.ctl.output(supervisor.getSupervisorVersion())

    def help_version(self):
        self.ctl.output(
            "version\t\t\tShow the version of the remote supervisord "
            "process")

    def do_fg(self, arg):
        if not self.ctl.upcheck():
            return

        names = arg.split()
        if not names:
            self.ctl.output('ERROR: no process name supplied')
            self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
            self.help_fg()
            return
        if len(names) > 1:
            self.ctl.output('ERROR: too many process names supplied')
            self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
            return

        name = names[0]
        supervisor = self.ctl.get_supervisor()

        try:
            info = supervisor.getProcessInfo(name)
        except xmlrpclib.Fault as e:
            if e.faultCode == xmlrpc.Faults.BAD_NAME:
                self.ctl.output('ERROR: bad process name supplied')
                self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
            else:
                self.ctl.output('ERROR: ' + str(e))
            return

        if info['state'] != states.ProcessStates.RUNNING:
            self.ctl.output('ERROR: process not running')
            self.ctl.exitstatus = LSBInitExitStatuses.GENERIC
            return

        self.ctl.output('==> Press Ctrl-C to exit <==')

        a = None
        try:
            # this thread takes care of the output/error messages
            a = fgthread(name, self.ctl)
            a.start()

            # this takes care of the user input
            while True:
                inp = raw_input() + '\n'
                try:
                    supervisor.sendProcessStdin(name, inp)
                except xmlrpclib.Fault as e:
                    if e.faultCode == xmlrpc.Faults.NOT_RUNNING:
                        self.ctl.output('Process got killed')
                    else:
                        self.ctl.output('ERROR: ' + str(e))
                    self.ctl.output('Exiting foreground')
                    a.kill()
                    return

                info = supervisor.getProcessInfo(name)
                if info['state'] != states.ProcessStates.RUNNING:
                    self.ctl.output('Process got killed')
                    self.ctl.output('Exiting foreground')
                    a.kill()
                    return
        except (KeyboardInterrupt, EOFError):
            self.ctl.output('Exiting foreground')
            if a:
                a.kill()

    def help_fg(self,args=None):
        self.ctl.output('fg <process>\tConnect to a process in foreground mode')
        self.ctl.output("\t\tCtrl-C to exit")


def main(args=None, options=None):
    if options is None:
        options = ClientOptions()

    options.realize(args, doc=__doc__)
    c = Controller(options)

    if options.args:
        c.onecmd(" ".join(options.args))
        sys.exit(c.exitstatus)

    if options.interactive:
        c.exec_cmdloop(args, options)
        sys.exit(0)  # exitstatus always 0 for interactive mode

if __name__ == "__main__":
    main()

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