1

#!/usr/bin/env python

     2

# -*- coding: utf-8 -*-

     3

     4

#This file is part of Beremiz, a Integrated Development Environment for

     5

#programming IEC 61131-3 automates supporting plcopen standard and CanFestival. 

     6

#

     7

#Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD

     8

#

     9

#See COPYING file for copyrights details.

    10

#

    11

#This library is free software; you can redistribute it and/or

    12

#modify it under the terms of the GNU General Public

    13

#License as published by the Free Software Foundation; either

    14

#version 2.1 of the License, or (at your option) any later version.

    15

#

    16

#This library is distributed in the hope that it will be useful,

    17

#but WITHOUT ANY WARRANTY; without even the implied warranty of

    18

#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    19

#General Public License for more details.

    20

#

    21

#You should have received a copy of the GNU General Public

    22

#License along with this library; if not, write to the Free Software

    23

#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    24

    25

import os, sys, getopt

    26

    27

def usage():

    28

    print """

    29

Usage of Beremiz PLC execution service :\n

    30

%s {[-n name] [-i ip] [-p port] [-x enabletaskbar] [-a autostart]|-h|--help} working_dir

    31

           -n        - zeroconf service name

    32

           -i        - ip of interface to bind to (x.x.x.x)

    33

           -p        - port number

    34

           -h        - print this help text and quit

    35

           -a        - autostart PLC (0:disable 1:enable)

    36

           -x        - enable/disable wxTaskbarIcon (0:disable 1:enable)

    37

    38

           working_dir - directory where are stored PLC files

    39

"""%sys.argv[0]

    40

    41

try:

    42

    opts, argv = getopt.getopt(sys.argv[1:], "i:p:n:x:a:h")

    43

except getopt.GetoptError, err:

    44

    # print help information and exit:

    45

    print str(err) # will print something like "option -a not recognized"

    46

    usage()

    47

    sys.exit(2)

    48

    49

# default values

    50

ip = ""

    51

port = 3000

    52

name = os.environ[{

    53

     "linux2":"USER",

    54

     "win32":"USERNAME",

    55

     }.get(sys.platform, "USER")]

    56

autostart = False

    57

enablewx = True

    58

havewx = False

    59

    60

for o, a in opts:

    61

    if o == "-h":

    62

        usage()

    63

        sys.exit()

    64

    elif o == "-i":

    65

        if len(a.split(".")) == 4 or a == "localhost":

    66

            ip = a

    67

    elif o == "-p":

    68

        # port: port that the service runs on

    69

        port = int(a)

    70

    elif o == "-n":

    71

        name = a

    72

    elif o == "-x":

    73

        enablewx = int(a)

    74

    elif o == "-a":

    75

        autostart = int(a)

    76

    else:

    77

        usage()

    78

        sys.exit()

    79

    80

if len(argv) > 1:

    81

    usage()

    82

    sys.exit()

    83

elif len(argv) == 1:

    84

    WorkingDir = argv[0]

    85

elif len(argv) == 0:

    86

    WorkingDir = os.getcwd()

    87

    argv=[WorkingDir]

    88

    89

if enablewx:

    90

    try:

    91

        import wx, re

    92

        from threading import Thread, currentThread

    93

        from types import *

    94

        havewx = True

    95

    except:

    96

        havewx = False

    97

    98

    if havewx:

    99

        try:

   100

            from wx.lib.embeddedimage import PyEmbeddedImage

   101

        except:

   102

            import cStringIO

   103

            import base64

   104

   105

            class PyEmbeddedImage:

   106

                def __init__(self, image_string):

   107

                    stream = cStringIO.StringIO(base64.b64decode(image_string))

   108

                    self.Image = wx.ImageFromStream(stream)

   109

                def GetImage(self):

   110

                    return self.Image

   111

   112

        defaulticon = PyEmbeddedImage(

   113

        "iVBORw0KGgoAAAANSUhEUgAAABgAAAAYCAYAAADgdz34AAAABHNCSVQICAgIfAhkiAAABc5J"

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        "REFUSIl9lW1MW9cZx3/n2vf6BQO2MZiXGBISILCVUEUlitYpjaKpXZJ1XZZ2kzJVY9r6IeLD"

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   142

   143

        #----------------------------------------------------------------------

   144

        starticon = PyEmbeddedImage(

   145

        "iVBORw0KGgoAAAANSUhEUgAAABgAAAAYCAYAAADgdz34AAAABHNCSVQICAgIfAhkiAAABbpJ"

   146

        "REFUSIl9lltsFNcdxn9nZnbHs15fd23j9TXYC0UCKzEhMQ+oIS2g1kQ1pbFStX0opFWsovSh"

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   150

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   170

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   173

        "Dw/HnwT4P6CDl+TMvD0JAAAAAElFTkSuQmCC")

   174

   175

        #----------------------------------------------------------------------

   176

        stopicon = PyEmbeddedImage(

   177

        "iVBORw0KGgoAAAANSUhEUgAAABgAAAAYCAYAAADgdz34AAAABHNCSVQICAgIfAhkiAAABPRJ"

   178

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   201

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   202

   221

                else:

   258

   361

   386

import Pyro.core as pyro

   387

   388

if not os.path.isdir(WorkingDir):

   389

    os.mkdir(WorkingDir)

   390

   391

def default_evaluator(callable, *args, **kwargs):

   392

    return callable(*args,**kwargs)

   393

   394

class Server():

   395

    def __init__(self, name, ip, port, workdir, argv, autostart=False, statuschange=None, evaluator=default_evaluator):

   396

        self.continueloop = True

   397

        self.daemon = None

   398

        self.name = name

   399

        self.ip = ip

   400

        self.port = port

   401

        self.workdir = workdir

   402

        self.argv = argv

   403

        self.plcobj = None

   404

        self.servicepublisher = None

   405

        self.autostart = autostart

   406

        self.statuschange = statuschange

   407

        self.evaluator = evaluator

   408

   409

    def Loop(self):

   410

        while self.continueloop:

   411

            self.Start()

   412

   413

    def Restart(self):

   414

        self.Stop()

   415

   416

    def Quit(self):

   417

        self.continueloop = False

   418

        self.Stop()

   419

   420

    def Start(self):

   421

        pyro.initServer()

   422

        self.daemon=pyro.Daemon(host=self.ip, port=self.port)

   423

        self.plcobj = PLCObject(self.workdir, self.daemon, self.argv, self.statuschange, self.evaluator)

   424

        uri = self.daemon.connect(self.plcobj,"PLCObject")

   425

   426

        print "The daemon runs on port :",self.port

   427

        print "The object's uri is :",uri

   428

        print "The working directory :",self.workdir

   429

   430

        # Configure and publish service

   431

        # Not publish service if localhost in address params

   432

        if self.ip != "localhost" and self.ip != "127.0.0.1":    

   433

            print "Publish service on local network"

   434

            self.servicepublisher = ServicePublisher.ServicePublisher()

   435

            self.servicepublisher.RegisterService(self.name, self.ip, self.port)

   436

   437

        if self.autostart:

   438

            self.plcobj.StartPLC()

   439

   440

        sys.stdout.flush()

   441

   442

        self.daemon.requestLoop()

   443

   444

    def Stop(self):

   445

        self.plcobj.StopPLC()

   446

        if self.servicepublisher is not None:

   447

            self.servicepublisher.UnRegisterService()

   448

            del self.servicepublisher

   449

        self.daemon.shutdown(True)

   450

   451

   452

if havewx:

   453

    from threading import Semaphore

   454

    wx_eval_lock = Semaphore(0)

   455

    app=wx.App(redirect=False)

   456

    mythread = currentThread()

   457

   458

    def statuschange(status):

   459

        wx.CallAfter(taskbar_instance.UpdateIcon,status)

   460

   461

    eval_res = None

   462

    def wx_evaluator(callable, *args, **kwargs):

   463

        global eval_res

   470

   471

    def evaluator(callable, *args, **kwargs):

   472

        # call directly the callable function if call from the wx mainloop (avoid dead lock) 

   473

        if(mythread == currentThread()):

   474

            callable(*args,**kwargs)

   475

        else:

   476

            wx.CallAfter(wx_evaluator,callable,*args,**kwargs)

   477

            wx_eval_lock.acquire()

   478

        return eval_res

   479

   480

    pyroserver = Server(name, ip, port, WorkingDir, argv, autostart, statuschange, evaluator)

   481

    taskbar_instance = BeremizTaskBarIcon(pyroserver)

   482

   483

    pyro_thread=Thread(target=pyroserver.Loop)

   484

    pyro_thread.start()

   485

    app.MainLoop()

   486

else:

   487

    pyroserver = Server(name, ip, port, WorkingDir, argv, autostart)

   488

    pyroserver.Loop()