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

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   173

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   174

   175

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

   176

        stopicon = PyEmbeddedImage(

   177

        "iVBORw0KGgoAAAANSUhEUgAAABgAAAAYCAYAAADgdz34AAAABHNCSVQICAgIfAhkiAAABPRJ"

   178

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   179

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   183

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   201

        "aHyBTKdjum0POGzbFAp7qo0xVOtJZdf/C/wRDnL5FYGSAAAAAElFTkSuQmCC")

   202

   203

        class ParamsEntryDialog(wx.TextEntryDialog):

   204

            if wx.VERSION < (2, 6, 0):

   205

                def Bind(self, event, function, id = None):

   206

                    if id is not None:

   207

                        event(self, id, function)

   208

                    else:

   209

                        event(self, function)

   210

   211

   212

            def __init__(self, parent, message, caption = "Please enter text", defaultValue = "", 

   213

                               style = wx.OK|wx.CANCEL|wx.CENTRE, pos = wx.DefaultPosition):

   214

                wx.TextEntryDialog.__init__(self, parent, message, caption, defaultValue, style, pos)

   215

   216

                self.Tests = []

   217

                if wx.VERSION >= (2, 8, 0):

   218

                    self.Bind(wx.EVT_BUTTON, self.OnOK, id=self.GetAffirmativeId())

   219

                elif wx.VERSION >= (2, 6, 0):

   220

                    self.Bind(wx.EVT_BUTTON, self.OnOK, id=self.GetSizer().GetItem(3).GetSizer().GetAffirmativeButton().GetId())

   221

                else:

   222

                    self.Bind(wx.EVT_BUTTON, self.OnOK, id=self.GetSizer().GetItem(3).GetSizer().GetChildren()[0].GetSizer().GetChildren()[0].GetWindow().GetId())

   223

   224

            def OnOK(self, event):

   225

                value = self.GetValue()

   226

                texts = {"value" : value}

   227

                for function, message in self.Tests:

   228

                    if not function(value):

   229

                        message = wx.MessageDialog(self, message%texts, "Error", wx.OK|wx.ICON_ERROR)

   230

                        message.ShowModal()

   231

                        message.Destroy()

   232

                        return

   233

                self.EndModal(wx.ID_OK)

   234

                event.Skip()

   235

   236

            def GetValue(self):

   237

                return self.GetSizer().GetItem(1).GetWindow().GetValue()

   238

   239

            def SetTests(self, tests):

   240

                self.Tests = tests

   241

   242

        class BeremizTaskBarIcon(wx.TaskBarIcon):

   243

            TBMENU_START = wx.NewId()

   244

            TBMENU_STOP = wx.NewId()

   245

            TBMENU_CHANGE_NAME = wx.NewId()

   246

            TBMENU_CHANGE_PORT = wx.NewId()

   247

            TBMENU_CHANGE_INTERFACE = wx.NewId()

   248

            TBMENU_LIVE_SHELL = wx.NewId()

   249

            TBMENU_WXINSPECTOR = wx.NewId()

   250

            TBMENU_CHANGE_WD = wx.NewId()

   251

            TBMENU_QUIT = wx.NewId()

   252

   253

            def __init__(self, pyroserver):

   254

                wx.TaskBarIcon.__init__(self)

   255

                self.pyroserver = pyroserver

   256

                # Set the image

   257

                self.UpdateIcon(None)

   258

   259

                # bind some events

   260

                self.Bind(wx.EVT_MENU, self.OnTaskBarStartPLC, id=self.TBMENU_START)

   261

                self.Bind(wx.EVT_MENU, self.OnTaskBarStopPLC, id=self.TBMENU_STOP)

   262

                self.Bind(wx.EVT_MENU, self.OnTaskBarChangeName, id=self.TBMENU_CHANGE_NAME)

   263

                self.Bind(wx.EVT_MENU, self.OnTaskBarChangeInterface, id=self.TBMENU_CHANGE_INTERFACE)

   264

                self.Bind(wx.EVT_MENU, self.OnTaskBarLiveShell, id=self.TBMENU_LIVE_SHELL)

   265

                self.Bind(wx.EVT_MENU, self.OnTaskBarWXInspector, id=self.TBMENU_WXINSPECTOR)

   266

                self.Bind(wx.EVT_MENU, self.OnTaskBarChangePort, id=self.TBMENU_CHANGE_PORT)

   267

                self.Bind(wx.EVT_MENU, self.OnTaskBarChangeWorkingDir, id=self.TBMENU_CHANGE_WD)

   268

                self.Bind(wx.EVT_MENU, self.OnTaskBarQuit, id=self.TBMENU_QUIT)

   269

   270

            def CreatePopupMenu(self):

   271

                """

   272

                This method is called by the base class when it needs to popup

   273

                the menu for the default EVT_RIGHT_DOWN event.  Just create

   274

                the menu how you want it and return it from this function,

   275

                the base class takes care of the rest.

   276

                """

   277

                menu = wx.Menu()

   278

                menu.Append(self.TBMENU_START, "Start PLC")

   279

                menu.Append(self.TBMENU_STOP, "Stop PLC")

   280

                menu.Append(self.TBMENU_CHANGE_NAME, "Change Name")

   281

                menu.Append(self.TBMENU_CHANGE_INTERFACE, "Change IP of interface to bind")

   282

                menu.Append(self.TBMENU_LIVE_SHELL, "Launch a live Python shell")

   283

                menu.Append(self.TBMENU_WXINSPECTOR, "Launch WX GUI inspector")

   284

                menu.Append(self.TBMENU_CHANGE_PORT, "Change Port Number")

   285

                menu.AppendSeparator()

   286

                menu.Append(self.TBMENU_CHANGE_WD, "Change working directory")

   287

                menu.Append(self.TBMENU_QUIT, "Quit")

   288

                return menu

   289

   290

            def MakeIcon(self, img):

   291

                """

   292

                The various platforms have different requirements for the

   293

                icon size...

   294

                """

   295

                if "wxMSW" in wx.PlatformInfo:

   296

                    img = img.Scale(16, 16)

   297

                elif "wxGTK" in wx.PlatformInfo:

   298

                    img = img.Scale(22, 22)

   299

                # wxMac can be any size upto 128x128, so leave the source img alone....

   300

                icon = wx.IconFromBitmap(img.ConvertToBitmap() )

   301

                return icon

   302

   303

            def OnTaskBarStartPLC(self, evt):

   304

                if self.pyroserver.plcobj is not None: 

   305

                    self.pyroserver.plcobj.StartPLC()

   306

                evt.Skip()

   307

   308

            def OnTaskBarStopPLC(self, evt):

   309

                if self.pyroserver.plcobj is not None:

   310

                    self.pyroserver.plcobj.StopPLC()

   311

                evt.Skip()

   312

   313

            def OnTaskBarChangeInterface(self, evt):

   314

                dlg = ParamsEntryDialog(None, "Enter the ip of the interface to bind", defaultValue=self.pyroserver.ip)

   315

                dlg.SetTests([(re.compile('\d{1,3}(?:\.\d{1,3}){3}$').match, "Ip is not valid!"),

   316

                               ( lambda ip :len([x for x in ip.split(".") if 0 <= int(x) <= 255]) == 4, "Ip is not valid!")

   317

                               ])

   318

                if dlg.ShowModal() == wx.ID_OK:

   319

                    self.pyroserver.ip = dlg.GetValue()

   320

                    self.pyroserver.Stop()

   321

                evt.Skip()

   322

   323

            def OnTaskBarChangePort(self, evt):

   324

                dlg = ParamsEntryDialog(None, "Enter a port number ", defaultValue=str(self.pyroserver.port))

   325

                dlg.SetTests([(UnicodeType.isdigit, "Port number must be an integer!"), (lambda port : 0 <= int(port) <= 65535 , "Port number must be 0 <= port <= 65535!")])

   326

                if dlg.ShowModal() == wx.ID_OK:

   327

                    self.pyroserver.port = int(dlg.GetValue())

   328

                    self.pyroserver.Stop()

   329

                evt.Skip()

   330

   331

            def OnTaskBarChangeWorkingDir(self, evt):

   332

                dlg = wx.DirDialog(None, "Choose a working directory ", self.pyroserver.workdir, wx.DD_NEW_DIR_BUTTON)

   333

                if dlg.ShowModal() == wx.ID_OK:

   334

                    self.pyroserver.workdir = dlg.GetPath()

   335

                    self.pyroserver.Stop()

   336

                evt.Skip()

   337

   338

            def OnTaskBarChangeName(self, evt):

   339

                dlg = ParamsEntryDialog(None, "Enter a name ", defaultValue=self.pyroserver.name)

   340

                dlg.SetTests([(lambda name : len(name) is not 0 , "Name must not be null!")])

   341

                if dlg.ShowModal() == wx.ID_OK:

   342

                    self.pyroserver.name = dlg.GetValue()

   343

                    self.pyroserver.Restart()

   344

                evt.Skip()

   345

   346

            def OnTaskBarLiveShell(self, evt):

   347

                if self.pyroserver.plcobj is not None and self.pyroserver.plcobj.python_threads_vars is not None:

   348

                    from wx import py

   349

                    #frame = py.shell.ShellFrame(locals=self.pyroserver.plcobj.python_threads_vars)

   350

                    frame = py.crust.CrustFrame(locals=self.pyroserver.plcobj.python_threads_vars)

   351

                    frame.Show()

   352

                else:

   353

                    wx.MessageBox("No runnning PLC","Error")

   354

                evt.Skip()

   355

   356

            def OnTaskBarWXInspector(self, evt):

   357

                # Activate the widget inspection tool

   358

                from wx.lib.inspection import InspectionTool

   359

                if not InspectionTool().initialized:

   360

                    InspectionTool().Init(locals=self.pyroserver.plcobj.python_threads_vars)

   361

   362

                # Find a widget to be selected in the tree.  Use either the

   363

                # one under the cursor, if any, or this frame.

   364

                wnd = wx.FindWindowAtPointer()

   365

                if not wnd:

   366

                    wnd = wx.GetApp()

   367

                InspectionTool().Show(wnd, True)

   368

                evt.Skip()

   369

   370

            def OnTaskBarQuit(self, evt):

   371

                self.pyroserver.Quit()

   372

                self.RemoveIcon()

   373

                wx.CallAfter(wx.GetApp().Exit)

   374

                evt.Skip()

   375

   376

            def UpdateIcon(self, plcstatus):

   377

                if plcstatus is "Started" :

   378

                    currenticon = self.MakeIcon(starticon.GetImage())

   379

                elif plcstatus is "Stopped":

   380

                    currenticon = self.MakeIcon(stopicon.GetImage())

   381

                else:

   382

                    currenticon = self.MakeIcon(defaulticon.GetImage())

   383

                self.SetIcon(currenticon, "Beremiz Service")

   384

   385

from runtime import PLCObject, PLCprint, ServicePublisher

   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

   464

        try:

   465

            eval_res=callable(*args,**kwargs)

   466

        except Exception,e:

   467

            PLCprint("#EXCEPTION : "+str(e))

   468

        finally:

   469

            wx_eval_lock.release()

   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()