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[经验分享] 利用Python脚本管理Windows服务

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发表于 2018-6-19 09:53:21 | 显示全部楼层 |阅读模式
#!/usr/bin/python  
# encoding: utf-8
  
# -*- coding: utf8 -*-
  
"""
  
Created by PyCharm.
  
File:               LinuxBashShellScriptForOps:ServiceControl.py
  
User:               Guodong
  
Create Date:        2016/10/14
  
Create Time:        17:57
  

  

  
Example of program with many options using docopt, control system service.
  
Usage:
  
  ServiceControl.py SERVICE_NAME SERVICE_ACTION
  
  ServiceControl.py SERVICE_ACTION SERVICE_NAME
  
  ServiceControl.py --version | -v
  
  ServiceControl.py --help | -h
  
Arguments:
  
  SERVICE_NAME  service name
  
  SERVICE_ACTION service action in ["start", "stop", "restart", "status"]
  
Options:
  
  -h --help            show this help message and exit
  
  -v --version         show version and exit
  
"""
  
import sys
  
import codecs
  
import locale
  
import psutil
  
import win32serviceutil
  
import time
  
from collections import OrderedDict
  

  
from docopt import docopt
  

  
UNKNOWN = 0
  
STOPPED = 1
  
START_PENDING = 2
  
STOP_PENDING = 3
  
RUNNING = 4
  

  
status_code = {
  
    0: "UNKNOWN",
  
    1: "STOPPED",
  
    2: "START_PENDING",
  
    3: "STOP_PENDING",
  
    4: "RUNNING"
  
}
  

  

  
def get_system_encoding():
  
    """
  
    The encoding of the default system locale but falls back to the given
  
    fallback encoding if the encoding is unsupported by python or could
  
    not be determined.  See tickets #10335 and #5846
  
    """
  
    try:
  
        encoding = locale.getdefaultlocale()[1] or 'ascii'
  
        codecs.lookup(encoding)
  
    except Exception:
  
        encoding = 'ascii'
  
    return encoding
  

  

  
DEFAULT_LOCALE_ENCODING = get_system_encoding()
  

  

  
# try:
  
#     result = result.decode(DEFAULT_LOCALE_ENCODING)
  
# except UnicodeDecodeError:
  
#     # UnicodeDecodeError - preventive treatment for non-latin Windows.
  
#     return ''
  

  
def is_iterable(source):
  
    if source is not None:
  
        try:
  
            iter(source)
  
        except TypeError:
  
            return False
  
        return True
  
    else:
  
        raise RuntimeError("argument cannot be None")
  

  

  
def status_service(service_name):
  
    try:
  
        result = win32serviceutil.QueryServiceStatus(service_name)[1]
  
        if result == START_PENDING:
  
            print "service %s is %s, please wait" % (service_name, status_code[result])
  
            time.sleep(2)
  
            return RUNNING
  
        elif result == STOP_PENDING:
  
            print "service %s is %s, please wait" % (service_name, status_code[result])
  
            time.sleep(2)
  
            return STOPPED
  
        else:
  
            return result if result is not None else 0
  
    except Exception as e:
  
        if e.message:
  
            raise RuntimeError(e.message)
  
        elif e.args:
  
            # print e.args
  
            args = list()
  
            for arg in e.args:
  
                if is_iterable(arg):
  
                    args.append(unicode(eval(repr(arg)), 'gbk'))
  
                else:
  
                    args.append(arg)
  
            print "Error:", args[-1], tuple(args)
  
            raise RuntimeError
  
        else:
  
            raise RuntimeError("Uncaught exception, maybe it is a 'Access Denied'")  # will not reach here
  

  

  
def start_service(service_name):
  
    status = status_service(service_name)
  
    if status == STOPPED:
  
        pass
  
    elif status == RUNNING:
  
        print "service %s already started" % service_name
  
        return status
  

  
    try:
  
        print "starting %s" % service_name
  
        win32serviceutil.StartService(service_name)
  
    except Exception as e:
  
        if e.message:
  
            raise RuntimeError(e.message)
  
        elif e.args:
  
            # print e.args
  
            args = list()
  
            for arg in e.args:
  
                if is_iterable(arg):
  
                    args.append(unicode(eval(repr(arg)), 'gbk'))
  
                else:
  
                    args.append(arg)
  
            print "Error:", args[-1], tuple(args)
  
            raise RuntimeError
  
        else:
  
            raise RuntimeError("Uncaught exception, maybe it is a 'Access Denied'")  # will not reach here
  
    return status_service(service_name)
  

  

  
def stop_service(service_name):
  
    status = status_service(service_name)
  
    if status == STOPPED:
  
        print "service %s already stopped" % service_name
  
        return status
  
    elif status == RUNNING:
  
        pass
  
    else:
  
        return status
  
    try:
  
        print "stopping %s" % service_name
  
        win32serviceutil.StopService(service_name)
  
    except Exception as e:
  
        if e.message:
  
            print e.message
  
        elif e.args:
  
            # print e.args
  
            args = list()
  
            for arg in e.args:
  
                if is_iterable(arg):
  
                    args.append(unicode(eval(repr(arg)), 'gbk'))
  
                else:
  
                    args.append(arg)
  
            print "Error:", args[-1], tuple(args)
  
            raise RuntimeError
  
        else:
  
            raise RuntimeError("Uncaught exception, maybe it is a 'Access Denied'")  # will not reach here
  
    return status_service(service_name)
  

  

  
def restart_service(service_name):
  
    status = status_service(service_name)
  
    if status == START_PENDING or status == RUNNING:
  
        if status == START_PENDING:
  
            time.sleep(2)
  
        stop_service(service_name)
  
        status = status_service(service_name)
  
        if status == STOPPED or status == STOP_PENDING:
  
            if status == STOP_PENDING:
  
                time.sleep(2)
  
            return start_service(service_name)
  
    elif status == STOPPED or status == STOP_PENDING:
  
        print "service %s not running." % service_name
  
        return start_service(service_name)
  
    else:
  
        return status_service(service_name)
  

  

  
def do_service(service_name, service_action):
  
    # https://docs.python.org/2/faq/design.html#why-isn-t-there-a-switch-or-case-statement-in-python
  
    # http://python.jobbole.com/82008/
  
    valid_action = ["start", "stop", "restart", "status"]
  
    maps = {
  
        "start": "start_service(service_name)",
  
        "stop": "stop_service(service_name)",
  
        "restart": "restart_service(service_name)",
  
        "status": "status_service(service_name)",
  
    }
  
    if service_name == "" or service_action == "":
  
        raise RuntimeError("service_name and service_action cannot be empty.")
  
    if service_action in valid_action:
  
        return eval(maps[service_action])
  
    else:
  
        raise RuntimeError("bad service_action '%s', valid action is %s" % (service_action, valid_action))
  

  

  
def list_service():
  
    service_dict = OrderedDict()
  
    for service in psutil.win_service_iter():
  
        service_dict[service.name()] = service.display_name()
  
    return service_dict
  

  

  
def is_valid_service_name(service_name):
  
    if service_name.lower() in [name.lower() for name, display_name in list_service().items()]:
  
        return True
  
    else:
  
        return False
  

  

  
if __name__ == '__main__':
  
    SERVICE_ACTION = ["start", "stop", "restart", "status"]
  
    arguments = docopt(__doc__, version='1.0.0rc2')
  

  
    if arguments['SERVICE_NAME'] != "" and arguments['SERVICE_ACTION'] != "":
  
        if arguments['SERVICE_ACTION'] in SERVICE_ACTION:
  
            pass
  
        elif arguments['SERVICE_NAME'] in SERVICE_ACTION:
  
            tmp = arguments['SERVICE_ACTION']
  
            arguments['SERVICE_ACTION'] = arguments['SERVICE_NAME']
  
            arguments['SERVICE_NAME'] = tmp
  
        else:
  
            print __doc__
  
            sys.exit(1)
  

  
        if is_valid_service_name(arguments['SERVICE_NAME']):
  
            pass
  
        else:
  
            raise RuntimeError("server '%s' not exist" % arguments['SERVICE_NAME'])
  

  
        return_code = do_service(arguments['SERVICE_NAME'], arguments['SERVICE_ACTION'])
  

  
        try:
  
            print status_code[return_code]
  
        except KeyError:
  
            print "return_code is %s." % return_code
  
    else:
  
        print __doc__
  
        sys.exit(1)
  

  
# TODO(Guodong Ding) run a command as administrator with administrative privilege, use 'runas' command?
  
state_command = "C:\WINDOWS\System32\sc.exe query MySQL56"
  
start_command = "C:\WINDOWS\System32\sc.exe start MySQL56"
  
stop_command = "C:\WINDOWS\System32\sc.exe stop MySQL56"

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