# -*- coding: utf-8 -*-
#
# Proxy minion metaproxy modules
#
from __future__ import absolute_import, print_function, with_statement, unicode_literals
import os
import signal
import sys
import types
import logging
import threading
import traceback

# Import Salt Libs
# pylint: disable=3rd-party-module-not-gated
import salt
import salt.client
import salt.crypt
import salt.loader
import salt.beacons
import salt.engines
import salt.payload
import salt.pillar
import salt.syspaths
import salt.utils.args
import salt.utils.context
import salt.utils.data
import salt.utils.error
import salt.utils.event
import salt.utils.files
import salt.utils.jid
import salt.utils.minion
import salt.utils.minions
import salt.utils.network
import salt.utils.platform
import salt.utils.process
import salt.utils.schedule
import salt.utils.ssdp
import salt.utils.user
import salt.utils.zeromq
import salt.defaults.exitcodes
import salt.cli.daemons
import salt.log.setup
import salt.serializers.msgpack
import salt.minion
import salt.defaults.exitcodes

import salt.utils.dictupdate
from salt.utils.event import tagify
from salt.exceptions import (
    CommandExecutionError,
    CommandNotFoundError,
    SaltInvocationError,
    SaltSystemExit,
)
from salt.ext import six
from salt.ext.six.moves import range
from salt.minion import ProxyMinion

from salt.defaults import DEFAULT_TARGET_DELIM
from salt.utils.process import (default_signals,
                                SignalHandlingProcess)


import salt.ext.tornado.gen  # pylint: disable=F0401
import salt.ext.tornado.ioloop  # pylint: disable=F0401

log = logging.getLogger(__name__)


def post_master_init(self, master):
    log.debug("subclassed LazyLoaded _post_master_init")
    if self.connected:
        self.opts['master'] = master

        self.opts['pillar'] = yield salt.pillar.get_async_pillar(
            self.opts,
            self.opts['grains'],
            self.opts['id'],
            saltenv=self.opts['saltenv'],
            pillarenv=self.opts.get('pillarenv'),
        ).compile_pillar()

    if 'proxy' not in self.opts['pillar'] and 'proxy' not in self.opts:
        errmsg = 'No proxy key found in pillar or opts for id ' + self.opts['id'] + '. ' + \
                 'Check your pillar/opts configuration and contents.  Salt-proxy aborted.'
        log.error(errmsg)
        self._running = False
        raise SaltSystemExit(code=-1, msg=errmsg)

    if 'proxy' not in self.opts:
        self.opts['proxy'] = self.opts['pillar']['proxy']

    if self.opts.get('proxy_merge_pillar_in_opts'):
        # Override proxy opts with pillar data when the user required.
        self.opts = salt.utils.dictupdate.merge(self.opts,
                                                self.opts['pillar'],
                                                strategy=self.opts.get('proxy_merge_pillar_in_opts_strategy'),
                                                merge_lists=self.opts.get('proxy_deep_merge_pillar_in_opts', False))
    elif self.opts.get('proxy_mines_pillar'):
        # Even when not required, some details such as mine configuration
        # should be merged anyway whenever possible.
        if 'mine_interval' in self.opts['pillar']:
            self.opts['mine_interval'] = self.opts['pillar']['mine_interval']
        if 'mine_functions' in self.opts['pillar']:
            general_proxy_mines = self.opts.get('mine_functions', [])
            specific_proxy_mines = self.opts['pillar']['mine_functions']
            try:
                self.opts['mine_functions'] = general_proxy_mines + specific_proxy_mines
            except TypeError as terr:
                log.error('Unable to merge mine functions from the pillar in the opts, for proxy {}'.format(
                    self.opts['id']))

    fq_proxyname = self.opts['proxy']['proxytype']

    # Need to load the modules so they get all the dunder variables
    self.functions, self.returners, self.function_errors, self.executors = self._load_modules()

    # we can then sync any proxymodules down from the master
    # we do a sync_all here in case proxy code was installed by
    # SPM or was manually placed in /srv/salt/_modules etc.
    self.functions['saltutil.sync_all'](saltenv=self.opts['saltenv'])

    # Pull in the utils
    self.utils = salt.loader.utils(self.opts)

    # Then load the proxy module
    self.proxy = salt.loader.proxy(self.opts, utils=self.utils)

    # And re-load the modules so the __proxy__ variable gets injected
    self.functions, self.returners, self.function_errors, self.executors = self._load_modules()
    self.functions.pack['__proxy__'] = self.proxy
    self.proxy.pack['__salt__'] = self.functions
    self.proxy.pack['__ret__'] = self.returners
    self.proxy.pack['__pillar__'] = self.opts['pillar']

    # Reload utils as well (chicken and egg, __utils__ needs __proxy__ and __proxy__ needs __utils__
    self.utils = salt.loader.utils(self.opts, proxy=self.proxy)
    self.proxy.pack['__utils__'] = self.utils

    # Reload all modules so all dunder variables are injected
    self.proxy.reload_modules()

    # Start engines here instead of in the Minion superclass __init__
    # This is because we need to inject the __proxy__ variable but
    # it is not setup until now.
    self.io_loop.spawn_callback(salt.engines.start_engines, self.opts,
                                self.process_manager, proxy=self.proxy)

    if ('{0}.init'.format(fq_proxyname) not in self.proxy
        or '{0}.shutdown'.format(fq_proxyname) not in self.proxy):
        errmsg = 'Proxymodule {0} is missing an init() or a shutdown() or both. '.format(fq_proxyname) + \
                 'Check your proxymodule.  Salt-proxy aborted.'
        log.error(errmsg)
        self._running = False
        raise SaltSystemExit(code=-1, msg=errmsg)

    self.module_executors = self.proxy.get('{0}.module_executors'.format(fq_proxyname), lambda: [])()
    proxy_init_fn = self.proxy[fq_proxyname + '.init']
    proxy_init_fn(self.opts)

    self.opts['grains'] = salt.loader.grains(self.opts, proxy=self.proxy)

    self.serial = salt.payload.Serial(self.opts)
    self.mod_opts = self._prep_mod_opts()
    self.matchers = salt.loader.matchers(self.opts)
    self.beacons = salt.beacons.Beacon(self.opts, self.functions)
    uid = salt.utils.user.get_uid(user=self.opts.get('user', None))
    self.proc_dir = salt.minion.get_proc_dir(self.opts['cachedir'], uid=uid)

    if self.connected and self.opts['pillar']:
        # The pillar has changed due to the connection to the master.
        # Reload the functions so that they can use the new pillar data.
        self.functions, self.returners, self.function_errors, self.executors = self._load_modules()
        if hasattr(self, 'schedule'):
            self.schedule.functions = self.functions
            self.schedule.returners = self.returners

    if not hasattr(self, 'schedule'):
        self.schedule = salt.utils.schedule.Schedule(
            self.opts,
            self.functions,
            self.returners,
            cleanup=[salt.minion.master_event(type='alive')],
            proxy=self.proxy)

    # add default scheduling jobs to the minions scheduler
    if self.opts['mine_enabled'] and 'mine.update' in self.functions:
        self.schedule.add_job({
            '__mine_interval':
                {
                    'function': 'mine.update',
                    'minutes': self.opts['mine_interval'],
                    'jid_include': True,
                    'maxrunning': 2,
                    'run_on_start': True,
                    'return_job': self.opts.get('mine_return_job', False)
                }
        }, persist=True)
        log.info('Added mine.update to scheduler')
    else:
        self.schedule.delete_job('__mine_interval', persist=True)

    # add master_alive job if enabled
    if (self.opts['transport'] != 'tcp' and
        self.opts['master_alive_interval'] > 0):
        self.schedule.add_job({
            salt.minion.master_event(type='alive', master=self.opts['master']):
                {
                    'function': 'status.master',
                    'seconds': self.opts['master_alive_interval'],
                    'jid_include': True,
                    'maxrunning': 1,
                    'return_job': False,
                    'kwargs': {'master': self.opts['master'],
                               'connected': True}
                }
        }, persist=True)
        if self.opts['master_failback'] and \
            'master_list' in self.opts and \
            self.opts['master'] != self.opts['master_list'][0]:
            self.schedule.add_job({
                salt.minion.master_event(type='failback'):
                    {
                        'function': 'status.ping_master',
                        'seconds': self.opts['master_failback_interval'],
                        'jid_include': True,
                        'maxrunning': 1,
                        'return_job': False,
                        'kwargs': {'master': self.opts['master_list'][0]}
                    }
            }, persist=True)
        else:
            self.schedule.delete_job(salt.minion.master_event(type='failback'), persist=True)
    else:
        self.schedule.delete_job(salt.minion.master_event(type='alive', master=self.opts['master']), persist=True)
        self.schedule.delete_job(salt.minion.master_event(type='failback'), persist=True)

    # proxy keepalive
    proxy_alive_fn = fq_proxyname+'.alive'
    if (proxy_alive_fn in self.proxy
        and 'status.proxy_reconnect' in self.functions
        and self.opts.get('proxy_keep_alive', True)):
        # if `proxy_keep_alive` is either not specified, either set to False does not retry reconnecting
        self.schedule.add_job({
            '__proxy_keepalive':
                {
                    'function': 'status.proxy_reconnect',
                    'minutes': self.opts.get('proxy_keep_alive_interval', 1),  # by default, check once per minute
                    'jid_include': True,
                    'maxrunning': 1,
                    'return_job': False,
                    'kwargs': {
                        'proxy_name': fq_proxyname
                    }
                }
        }, persist=True)
        self.schedule.enable_schedule()
    else:
        self.schedule.delete_job('__proxy_keepalive', persist=True)

    #  Sync the grains here so the proxy can communicate them to the master
    self.functions['saltutil.sync_grains'](saltenv='base')
    self.grains_cache = self.opts['grains']
    self.ready = True


def target(cls, minion_instance, opts, data, connected):

    if not minion_instance:
        minion_instance = cls(opts)
        minion_instance.connected = connected
        if not hasattr(minion_instance, 'functions'):
            # Need to load the modules so they get all the dunder variables
            functions, returners, function_errors, executors = (
                minion_instance._load_modules(grains=opts['grains'])
            )
            minion_instance.functions = functions
            minion_instance.returners = returners
            minion_instance.function_errors = function_errors
            minion_instance.executors = executors

            # Pull in the utils
            minion_instance.utils = salt.loader.utils(minion_instance.opts)

            # Then load the proxy module
            minion_instance.proxy = salt.loader.proxy(minion_instance.opts, utils=minion_instance.utils)

            # And re-load the modules so the __proxy__ variable gets injected
            functions, returners, function_errors, executors = (
                minion_instance._load_modules(grains=opts['grains'])
            )
            minion_instance.functions = functions
            minion_instance.returners = returners
            minion_instance.function_errors = function_errors
            minion_instance.executors = executors

            minion_instance.functions.pack['__proxy__'] = minion_instance.proxy
            minion_instance.proxy.pack['__salt__'] = minion_instance.functions
            minion_instance.proxy.pack['__ret__'] = minion_instance.returners
            minion_instance.proxy.pack['__pillar__'] = minion_instance.opts['pillar']

            # Reload utils as well (chicken and egg, __utils__ needs __proxy__ and __proxy__ needs __utils__
            minion_instance.utils = salt.loader.utils(minion_instance.opts, proxy=minion_instance.proxy)
            minion_instance.proxy.pack['__utils__'] = minion_instance.utils

            # Reload all modules so all dunder variables are injected
            minion_instance.proxy.reload_modules()

            fq_proxyname = opts['proxy']['proxytype']

            minion_instance.module_executors = minion_instance.proxy.get('{0}.module_executors'.format(fq_proxyname), lambda: [])()

            proxy_init_fn = minion_instance.proxy[fq_proxyname + '.init']
            proxy_init_fn(opts)
        if not hasattr(minion_instance, 'serial'):
            minion_instance.serial = salt.payload.Serial(opts)
        if not hasattr(minion_instance, 'proc_dir'):
            uid = salt.utils.user.get_uid(user=opts.get('user', None))
            minion_instance.proc_dir = (
                salt.minion.get_proc_dir(opts['cachedir'], uid=uid)
            )

    with salt.ext.tornado.stack_context.StackContext(minion_instance.ctx):
        if isinstance(data['fun'], tuple) or isinstance(data['fun'], list):
            ProxyMinion._thread_multi_return(minion_instance, opts, data)
        else:
            ProxyMinion._thread_return(minion_instance, opts, data)


def thread_return(cls, minion_instance, opts, data):
    '''
    This method should be used as a threading target, start the actual
    minion side execution.
    '''
    fn_ = os.path.join(minion_instance.proc_dir, data['jid'])

    salt.utils.process.appendproctitle('{0}._thread_return {1}'.format(cls.__name__, data['jid']))

    sdata = {'pid': os.getpid()}
    sdata.update(data)
    log.info('Starting a new job with PID %s', sdata['pid'])
    with salt.utils.files.fopen(fn_, 'w+b') as fp_:
        fp_.write(minion_instance.serial.dumps(sdata))
    ret = {'success': False}
    function_name = data['fun']
    executors = data.get('module_executors') or \
                getattr(minion_instance, 'module_executors', []) or \
                opts.get('module_executors', ['direct_call'])
    allow_missing_funcs = any([
        minion_instance.executors['{0}.allow_missing_func'.format(executor)](function_name)
        for executor in executors
        if '{0}.allow_missing_func'.format(executor) in minion_instance.executors
    ])
    if function_name in minion_instance.functions or allow_missing_funcs is True:
        try:
            minion_blackout_violation = False
            if minion_instance.connected and minion_instance.opts['pillar'].get('minion_blackout', False):
                whitelist = minion_instance.opts['pillar'].get('minion_blackout_whitelist', [])
                # this minion is blacked out. Only allow saltutil.refresh_pillar and the whitelist
                if function_name != 'saltutil.refresh_pillar' and function_name not in whitelist:
                    minion_blackout_violation = True
            # use minion_blackout_whitelist from grains if it exists
            if minion_instance.opts['grains'].get('minion_blackout', False):
                whitelist = minion_instance.opts['grains'].get('minion_blackout_whitelist', [])
                if function_name != 'saltutil.refresh_pillar' and function_name not in whitelist:
                    minion_blackout_violation = True
            if minion_blackout_violation:
                raise SaltInvocationError('Minion in blackout mode. Set \'minion_blackout\' '
                                          'to False in pillar or grains to resume operations. Only '
                                          'saltutil.refresh_pillar allowed in blackout mode.')

            if function_name in minion_instance.functions:
                func = minion_instance.functions[function_name]
                args, kwargs = salt.minion.load_args_and_kwargs(
                    func,
                    data['arg'],
                    data)
            else:
                # only run if function_name is not in minion_instance.functions and allow_missing_funcs is True
                func = function_name
                args, kwargs = data['arg'], data
            minion_instance.functions.pack['__context__']['retcode'] = 0
            if isinstance(executors, six.string_types):
                executors = [executors]
            elif not isinstance(executors, list) or not executors:
                raise SaltInvocationError("Wrong executors specification: {0}. String or non-empty list expected".
                                          format(executors))
            if opts.get('sudo_user', '') and executors[-1] != 'sudo':
                executors[-1] = 'sudo'  # replace the last one with sudo
            log.trace('Executors list %s', executors)  # pylint: disable=no-member

            for name in executors:
                fname = '{0}.execute'.format(name)
                if fname not in minion_instance.executors:
                    raise SaltInvocationError("Executor '{0}' is not available".format(name))
                return_data = minion_instance.executors[fname](opts, data, func, args, kwargs)
                if return_data is not None:
                    break

            if isinstance(return_data, types.GeneratorType):
                ind = 0
                iret = {}
                for single in return_data:
                    if isinstance(single, dict) and isinstance(iret, dict):
                        iret.update(single)
                    else:
                        if not iret:
                            iret = []
                        iret.append(single)
                    tag = tagify([data['jid'], 'prog', opts['id'], six.text_type(ind)], 'job')
                    event_data = {'return': single}
                    minion_instance._fire_master(event_data, tag)
                    ind += 1
                ret['return'] = iret
            else:
                ret['return'] = return_data

            retcode = minion_instance.functions.pack['__context__'].get(
                'retcode',
                salt.defaults.exitcodes.EX_OK
            )
            if retcode == salt.defaults.exitcodes.EX_OK:
                # No nonzero retcode in __context__ dunder. Check if return
                # is a dictionary with a "result" or "success" key.
                try:
                    func_result = all(return_data.get(x, True)
                                      for x in ('result', 'success'))
                except Exception:  # pylint: disable=broad-except
                    # return data is not a dict
                    func_result = True
                if not func_result:
                    retcode = salt.defaults.exitcodes.EX_GENERIC

            ret['retcode'] = retcode
            ret['success'] = retcode == salt.defaults.exitcodes.EX_OK
        except CommandNotFoundError as exc:
            msg = 'Command required for \'{0}\' not found'.format(
                function_name
            )
            log.debug(msg, exc_info=True)
            ret['return'] = '{0}: {1}'.format(msg, exc)
            ret['out'] = 'nested'
            ret['retcode'] = salt.defaults.exitcodes.EX_GENERIC
        except CommandExecutionError as exc:
            log.error(
                'A command in \'%s\' had a problem: %s',
                function_name, exc,
                exc_info_on_loglevel=logging.DEBUG
            )
            ret['return'] = 'ERROR: {0}'.format(exc)
            ret['out'] = 'nested'
            ret['retcode'] = salt.defaults.exitcodes.EX_GENERIC
        except SaltInvocationError as exc:
            log.error(
                'Problem executing \'%s\': %s',
                function_name, exc,
                exc_info_on_loglevel=logging.DEBUG
            )
            ret['return'] = 'ERROR executing \'{0}\': {1}'.format(
                function_name, exc
            )
            ret['out'] = 'nested'
            ret['retcode'] = salt.defaults.exitcodes.EX_GENERIC
        except TypeError as exc:
            msg = 'Passed invalid arguments to {0}: {1}\n{2}'.format(
                function_name, exc, func.__doc__ or ''
            )
            log.warning(msg, exc_info_on_loglevel=logging.DEBUG)
            ret['return'] = msg
            ret['out'] = 'nested'
            ret['retcode'] = salt.defaults.exitcodes.EX_GENERIC
        except Exception:  # pylint: disable=broad-except
            msg = 'The minion function caused an exception'
            log.warning(msg, exc_info_on_loglevel=True)
            salt.utils.error.fire_exception(salt.exceptions.MinionError(msg), opts, job=data)
            ret['return'] = '{0}: {1}'.format(msg, traceback.format_exc())
            ret['out'] = 'nested'
            ret['retcode'] = salt.defaults.exitcodes.EX_GENERIC
    else:
        docs = minion_instance.functions['sys.doc']('{0}*'.format(function_name))
        if docs:
            docs[function_name] = minion_instance.functions.missing_fun_string(function_name)
            ret['return'] = docs
        else:
            ret['return'] = minion_instance.functions.missing_fun_string(function_name)
            mod_name = function_name.split('.')[0]
            if mod_name in minion_instance.function_errors:
                ret['return'] += ' Possible reasons: \'{0}\''.format(
                    minion_instance.function_errors[mod_name]
                )
        ret['success'] = False
        ret['retcode'] = salt.defaults.exitcodes.EX_GENERIC
        ret['out'] = 'nested'

    ret['jid'] = data['jid']
    ret['fun'] = data['fun']
    ret['fun_args'] = data['arg']
    if 'master_id' in data:
        ret['master_id'] = data['master_id']
    if 'metadata' in data:
        if isinstance(data['metadata'], dict):
            ret['metadata'] = data['metadata']
        else:
            log.warning('The metadata parameter must be a dictionary. Ignoring.')
    if minion_instance.connected:
        minion_instance._return_pub(
            ret,
            timeout=minion_instance._return_retry_timer()
        )

    # Add default returners from minion config
    # Should have been coverted to comma-delimited string already
    if isinstance(opts.get('return'), six.string_types):
        if data['ret']:
            data['ret'] = ','.join((data['ret'], opts['return']))
        else:
            data['ret'] = opts['return']

    log.debug('minion return: %s', ret)
    # TODO: make a list? Seems odd to split it this late :/
    if data['ret'] and isinstance(data['ret'], six.string_types):
        if 'ret_config' in data:
            ret['ret_config'] = data['ret_config']
        if 'ret_kwargs' in data:
            ret['ret_kwargs'] = data['ret_kwargs']
        ret['id'] = opts['id']
        for returner in set(data['ret'].split(',')):
            try:
                returner_str = '{0}.returner'.format(returner)
                if returner_str in minion_instance.returners:
                    minion_instance.returners[returner_str](ret)
                else:
                    returner_err = minion_instance.returners.missing_fun_string(returner_str)
                    log.error(
                        'Returner %s could not be loaded: %s',
                        returner_str, returner_err
                    )
            except Exception as exc:  # pylint: disable=broad-except
                log.exception(
                    'The return failed for job %s: %s', data['jid'], exc
                )


def thread_multi_return(cls, minion_instance, opts, data):
    '''
    This method should be used as a threading target, start the actual
    minion side execution.
    '''
    fn_ = os.path.join(minion_instance.proc_dir, data['jid'])

    salt.utils.process.appendproctitle('{0}._thread_multi_return {1}'.format(cls.__name__, data['jid']))

    sdata = {'pid': os.getpid()}
    sdata.update(data)
    log.info('Starting a new job with PID %s', sdata['pid'])
    with salt.utils.files.fopen(fn_, 'w+b') as fp_:
        fp_.write(minion_instance.serial.dumps(sdata))

    multifunc_ordered = opts.get('multifunc_ordered', False)
    num_funcs = len(data['fun'])
    if multifunc_ordered:
        ret = {
            'return': [None] * num_funcs,
            'retcode': [None] * num_funcs,
            'success': [False] * num_funcs
        }
    else:
        ret = {
            'return': {},
            'retcode': {},
            'success': {}
        }

    for ind in range(0, num_funcs):
        if not multifunc_ordered:
            ret['success'][data['fun'][ind]] = False
        try:
            minion_blackout_violation = False
            if minion_instance.connected and minion_instance.opts['pillar'].get('minion_blackout', False):
                whitelist = minion_instance.opts['pillar'].get('minion_blackout_whitelist', [])
                # this minion is blacked out. Only allow saltutil.refresh_pillar and the whitelist
                if data['fun'][ind] != 'saltutil.refresh_pillar' and data['fun'][ind] not in whitelist:
                    minion_blackout_violation = True
            elif minion_instance.opts['grains'].get('minion_blackout', False):
                whitelist = minion_instance.opts['grains'].get('minion_blackout_whitelist', [])
                if data['fun'][ind] != 'saltutil.refresh_pillar' and data['fun'][ind] not in whitelist:
                    minion_blackout_violation = True
            if minion_blackout_violation:
                raise SaltInvocationError('Minion in blackout mode. Set \'minion_blackout\' '
                                          'to False in pillar or grains to resume operations. Only '
                                          'saltutil.refresh_pillar allowed in blackout mode.')

            func = minion_instance.functions[data['fun'][ind]]

            args, kwargs = salt.minion.load_args_and_kwargs(
                func,
                data['arg'][ind],
                data)
            minion_instance.functions.pack['__context__']['retcode'] = 0
            key = ind if multifunc_ordered else data['fun'][ind]
            ret['return'][key] = func(*args, **kwargs)
            retcode = minion_instance.functions.pack['__context__'].get(
                'retcode',
                0
            )
            if retcode == 0:
                # No nonzero retcode in __context__ dunder. Check if return
                # is a dictionary with a "result" or "success" key.
                try:
                    func_result = all(ret['return'][key].get(x, True)
                                      for x in ('result', 'success'))
                except Exception:  # pylint: disable=broad-except
                    # return data is not a dict
                    func_result = True
                if not func_result:
                    retcode = 1

            ret['retcode'][key] = retcode
            ret['success'][key] = retcode == 0
        except Exception as exc:  # pylint: disable=broad-except
            trb = traceback.format_exc()
            log.warning('The minion function caused an exception: %s', exc)
            if multifunc_ordered:
                ret['return'][ind] = trb
            else:
                ret['return'][data['fun'][ind]] = trb
        ret['jid'] = data['jid']
        ret['fun'] = data['fun']
        ret['fun_args'] = data['arg']
    if 'metadata' in data:
        ret['metadata'] = data['metadata']
    if minion_instance.connected:
        minion_instance._return_pub(
            ret,
            timeout=minion_instance._return_retry_timer()
        )
    if data['ret']:
        if 'ret_config' in data:
            ret['ret_config'] = data['ret_config']
        if 'ret_kwargs' in data:
            ret['ret_kwargs'] = data['ret_kwargs']
        for returner in set(data['ret'].split(',')):
            ret['id'] = opts['id']
            try:
                minion_instance.returners['{0}.returner'.format(
                    returner
                )](ret)
            except Exception as exc:  # pylint: disable=broad-except
                log.error(
                    'The return failed for job %s: %s',
                    data['jid'], exc
                )


def handle_payload(self, payload):
    if payload is not None and payload['enc'] == 'aes':
        if self._target_load(payload['load']):

            self._handle_decoded_payload(payload['load'])
        elif self.opts['zmq_filtering']:
            # In the filtering enabled case, we'd like to know when minion sees something it shouldnt
            log.trace(
                'Broadcast message received not for this minion, Load: %s',
                payload['load']
            )
    # If it's not AES, and thus has not been verified, we do nothing.
    # In the future, we could add support for some clearfuncs, but
    # the minion currently has no need.


def handle_decoded_payload(self, data):
    '''
    Override this method if you wish to handle the decoded data
    differently.
    '''
    # Ensure payload is unicode. Disregard failure to decode binary blobs.
    if six.PY2:
        data = salt.utils.data.decode(data, keep=True)
    if 'user' in data:
        log.info(
            'User %s Executing command %s with jid %s',
            data['user'], data['fun'], data['jid']
        )
    else:
        log.info(
            'Executing command %s with jid %s',
            data['fun'], data['jid']
        )
    log.debug('Command details %s', data)

    # Don't duplicate jobs
    log.trace('Started JIDs: %s', self.jid_queue)
    if self.jid_queue is not None:
        if data['jid'] in self.jid_queue:
            return
        else:
            self.jid_queue.append(data['jid'])
            if len(self.jid_queue) > self.opts['minion_jid_queue_hwm']:
                self.jid_queue.pop(0)

    if isinstance(data['fun'], six.string_types):
        if data['fun'] == 'sys.reload_modules':
            self.functions, self.returners, self.function_errors, self.executors = self._load_modules()
            self.schedule.functions = self.functions
            self.schedule.returners = self.returners

    process_count_max = self.opts.get('process_count_max')
    if process_count_max > 0:
        process_count = len(salt.utils.minion.running(self.opts))
        while process_count >= process_count_max:
            log.warning("Maximum number of processes reached while executing jid {0}, waiting...".format(data['jid']))
            yield salt.ext.tornado.gen.sleep(10)
            process_count = len(salt.utils.minion.running(self.opts))

    # We stash an instance references to allow for the socket
    # communication in Windows. You can't pickle functions, and thus
    # python needs to be able to reconstruct the reference on the other
    # side.
    instance = self
    multiprocessing_enabled = self.opts.get('multiprocessing', True)
    if multiprocessing_enabled:
        if sys.platform.startswith('win'):
            # let python reconstruct the minion on the other side if we're
            # running on windows
            instance = None
        with default_signals(signal.SIGINT, signal.SIGTERM):
            process = SignalHandlingProcess(
                target=self._target,
                name='ProcessPayload',
                args=(instance, self.opts, data, self.connected)
            )
    else:
        process = threading.Thread(
            target=self._target,
            args=(instance, self.opts, data, self.connected),
            name=data['jid']
        )

    if multiprocessing_enabled:
        with default_signals(signal.SIGINT, signal.SIGTERM):
            # Reset current signals before starting the process in
            # order not to inherit the current signal handlers
            process.start()
    else:
        process.start()
    process.name = '{}-Job-{}'.format(process.name, data['jid'])
    self.subprocess_list.add(process)


def target_load(self, load):
    # Verify that the publication is valid
    if 'tgt' not in load or 'jid' not in load or 'fun' not in load \
        or 'arg' not in load:
        return False
    # Verify that the publication applies to this minion

    # It's important to note that the master does some pre-processing
    # to determine which minions to send a request to. So for example,
    # a "salt -G 'grain_key:grain_val' test.ping" will invoke some
    # pre-processing on the master and this minion should not see the
    # publication if the master does not determine that it should.
    if 'tgt_type' in load:
        match_func = self.matchers.get('{0}_match.match'.format(load['tgt_type']), None)
        if match_func is None:
            return False
        if load['tgt_type'] in ('grain', 'grain_pcre', 'pillar'):
            delimiter = load.get('delimiter', DEFAULT_TARGET_DELIM)
            if not match_func(load['tgt'], delimiter=delimiter):
                return False
        elif not match_func(load['tgt']):
            return False
    else:
        if not self.matchers['glob_match.match'](load['tgt']):
            return False

    return True
