gui.py 16.4 KB
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
    TASTE ASN.1 Value Editor
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    Tool main entry point (when used standalone)

    Copyright (c) 2012-2015 European Space Agency

    Designed and implemented by Maxime Perrotin

    Contact: maxime.perrotin@esa.int

    License is LGPLv3 - Check the LICENSE file
"""
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__url__ = "http://taste.tuxfamily.org"


import os
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import traceback
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import signal
import sys
import platform
import re
import logging
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import argparse
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import time
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from functools import partial
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from ctypes import CDLL
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log = logging.getLogger(__name__)
terminal_formatter = logging.Formatter(
        fmt="%(levelname)s - %(name)s: %(message)s")
handler_console = logging.StreamHandler()
handler_console.setLevel(logging.DEBUG)
handler_console.setFormatter(terminal_formatter)
log.addHandler(handler_console)


from ColorFormatter import ColorFormatter

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from asn1_value_editor import asn1Editor, asn1Viewer, __version__
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from plotmanager import PlotManager
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import vn
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try:
    import speedometer
except ImportError:
    log.error('You must install speedometer first')

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# Make sure the gui can import modules in the current directory
sys.path.insert(0, '.')

try:
    import datamodel
except ImportError:
    datamodel = None

try:
    from PythonController import(OpenMsgQueueForReading,
                GetMsgQueueBufferSize, DV, RetrieveMessageFromQueue)
    python_controller = True
except ImportError:
    python_controller = False

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import resources

from mscHandler import mscHandler
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from sdlHandler import sdlHandler
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from PySide.QtCore import QThread, QFile, Qt, Signal, QObject
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from PySide.QtGui import(QApplication, QStatusBar, QLabel, QWidget,
        QListWidget, QPushButton, QDockWidget, QTabWidget, QMenu, QAction)

from PySide.QtUiTools import QUiLoader

g_tmPool = {}
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False
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class MsgQ_Poller(QThread):
    '''
        Thread for polling the GUI queue in order to receive
        the messages from the main binary
    '''
    tm = Signal()

    def __init__(self, log, parent=None):
        self.log = log
        QThread.__init__(self, parent)
        self.Qname = "{uid}_{fvname}_PI_queue".format(uid=str(os.geteuid()),
                                                    fvname=datamodel.FVname)
        self.log.info('msQ name= ' + self.Qname)

    def run(self):
        self.log.debug('Starting msgQ polling thread')
        self._bDie = False
        while True:
            if self._bDie:
                return
            self._msgQueue = OpenMsgQueueForReading(self.Qname)
            if (self._msgQueue != -1):
                break
            self.log.warning(
                    "Communication channel over {Qname} not established yet. "
                    "Retrying...".format(Qname=self.Qname))
            time.sleep(1)
        bufferSize = GetMsgQueueBufferSize(self._msgQueue)
        while not self._bDie:
            pDataFromMQ = DV.new_byte_SWIG_PTR(bufferSize)
            messageReceivedType = RetrieveMessageFromQueue(
                                       self._msgQueue, bufferSize, pDataFromMQ)
            if messageReceivedType == -1:
                time.sleep(0.005)
                continue
            self.log.debug('MsgQ poller: received message')
            # use a signal to inform the TM editor of the received TM
            g_tmPool[messageReceivedType].pendingTM = pDataFromMQ
            self.tm.emit()


class MyLogger:
    ''' Hook for catching the calls to "print" from imported modules '''
    def __init__(self, log):
        self.log = log
        self.string = ""

    def write(self, string):
        if string.endswith('\n'):
            self.log.info(self.string)
            self.string = ""
        else:
            self.string += string


def gui():
    ''' Application entry point '''
    # Exit app on Ctrl-C
    signal.signal(signal.SIGINT, signal.SIG_DFL)
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    if 'opengeode-simulator' in sys.argv[0]:
        sys.argv.append('-l')
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    #usage = 'usage: gui.py [--udp=IP_Address:in_Port:out_Port]'
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    version = 'taste auto-gui %s' % (__version__)

    # Set up the logging facilities
    log = logging.getLogger("gui")
    console = logging.StreamHandler(sys.__stdout__)
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    console.setFormatter(ColorFormatter())
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    log.addHandler(console)
    log.info('Starting GUI')
    myPrint = MyLogger(log)
    sys.stdout = myPrint

    # Parse the command line
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    parser = argparse.ArgumentParser(version=version)
    parser.add_argument('-g', '--verbose', action='store_true', default=False,
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                      help='Display debug information')
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    parser.add_argument('--udp', dest='udp', metavar='RemoteIP:inPort:outPort',
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                      help='Use UDP sockets instead of message queues')
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    parser.add_argument('-l', '--shared_lib', action='store_true',
                      default=False, help='Simulate SDL system, '
                      'using a shared library')
    parser.add_argument('-r', '--reset', action='store_true', default=False,
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                      help='Do not try to restore windows layout')
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    parser.add_argument('-p', '--properties', dest='properties',
                      help='Specify a file containing stop conditions')
    parser.add_argument('-i', '--ivpath', dest='ivpath',
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                      default='./InterfaceView.aadl',
                      help='Path and filename of the system interface view')
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    options = parser.parse_args()
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    if options.verbose:
        log.setLevel(logging.DEBUG)
    else:
        log.setLevel(logging.INFO)

    log.debug('{version} using Python {pyVersion}'.format(
                        version=version, pyVersion=platform.python_version()))
    log.debug('Using interface view (for MSC processing): ' + options.ivpath)
    if options.udp is not None and not re.match("\d+.\d+.\d+.\d+:\d+:\d+",
                                                options.udp):
        log.error('Wrong UDP format. Run with --help for the proper syntax')
        log.error('You entered ' + options.udp)
        sys.exit(-1)

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    if not datamodel:
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        log.error('Could not import project data')
        return -1

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    msgQ = True
    udp = None
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    dll = None
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    hasTM = False
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    if not options.udp and not options.shared_lib:
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        # Default: use message queue
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        log.info('Using message queues to communicate')
        if not python_controller:
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            log.error('Python module "PythonController" is missing')
            return -1
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    elif options.udp:
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        msgQ = False
        udpConfig = options.udp.split(':')
        log.debug('UDP with IP={cfg[0]} inPort={cfg[1]} outPort={cfg[2]}'
                   .format(cfg=udpConfig))
        try:
            from udpcontroller import tasteUDP
            udp = tasteUDP(log=log, ip_out=udpConfig[0],
                           inport=int(udpConfig[1]), outport=int(udpConfig[2]))
            log.info('Using UDP to communicate')
        except ImportError:
            log.error('Python module "udpcontroller" is missing')
            return -1
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    elif options.shared_lib:
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        # Load and run the startup transition of the shared library (Ada only?)
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        msgQ = False
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        try:
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            dll = CDLL('lib{}.so'.format(datamodel.FVname))
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            dll_init = getattr(dll, 'lib{}init'.format(datamodel.FVname))
            dll_init()
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        except OSError as err:
            log.error('Issue with shared library lib{}.so:'
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                      .format(datamodel.FVname))
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            log.error(str(err))
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            return -1
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    # Define a Qt application (mandatory)
    app = QApplication(sys.argv)

    # All available styles are listed with: QStyleFactory.keys()
    app.setStyle("cleanlooks")

    # Load the GUI description file (.ui file editable with Qt Designer)
    # Pyside and PyQt have a different way of doing...
    from TasteMainWindow import TasteMainWindow
    loader = QUiLoader()
    loader.registerCustomWidget(asn1Editor)
    loader.registerCustomWidget(asn1Viewer)
    loader.registerCustomWidget(TasteMainWindow)
    uiFile = QFile("guilayout.ui")
    uiFile.open(QFile.ReadOnly)
    myWidget = loader.load(uiFile)
    uiFile.close()

    log.info('GUI generated for function ' + datamodel.FVname)
    myWidget.FVname = datamodel.FVname

    # Create an instance of the Plot/Meter manager
    plotter = PlotManager(parent=myWidget, log=log)

    # find QStatusBar widget
    statusbar = myWidget.findChildren(QStatusBar)[0]
    statusbar.showMessage('Welcome to TASTE')

    # find TASTE logo and get width of the picture
    tasteLogo = myWidget.findChild(QLabel, 'tasteLogo')
    tasteLogo.setPixmap(':/tasteLogo_white.png')
    logoWidth = tasteLogo.pixmap().width()

    # find Central widget and set maximum size to width of the logo
    centralWidget = myWidget.findChild(QWidget, 'centralWidget')
    centralWidget.setMaximumWidth(logoWidth)

    # To Put ASSERT background image
    #assertPix=QPalette()
    #assertPix.setBrush(myWidget.backgroundRole(),
    #                   QBrush(QImage("assert_bkg.jpg")))
    #myWidget.setPalette(assertPix)

    # find list to place MSC scenarii and corresponding buttons
    mscList = myWidget.findChild(QListWidget, 'msc')
    runMSC = myWidget.findChild(QPushButton, 'runMSC')
    loadMSC = myWidget.findChild(QPushButton, 'loadMSC')
    editMSC = myWidget.findChild(QPushButton, 'editMSC')

    # Create an instance of the class handling MSC/Python scripts
    msgs = []
    for msg in datamodel.tc:
        msgs.append({'name': msg, 'type': datamodel.tc[msg]['nodeTypename']})
    for msg in datamodel.tm:
        msgs.append({'name': msg, 'type': datamodel.tm[msg]['nodeTypename']})
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    # set the names of the MSC instances, depending on the context
    if dll:
        instance1 = datamodel.FVname
        instance2 = 'Operator'
    else:
        instance1 = 'TASTE_System'
        instance2 = datamodel.FVname

    msc = mscHandler(myWidget, mscList, instance2, msgs, udpController=udp,
                     instance_name=instance1)
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    msc.log = log
    msc.ivpath = options.ivpath
    runMSC.pressed.connect(msc.run)
    loadMSC.pressed.connect(msc.load)
    editMSC.pressed.connect(msc.edit)
    myWidget.mscStop.connect(msc.stopMscRecording)

    # Create toolbar with a button to start/stop MSC recording and streamind
    toolbar = myWidget.addToolBar('toolbar')
    toolbar.setObjectName('toolbar')
    mscButton = toolbar.addAction('MSC')
    mscButton.triggered.connect(msc.startStop)
    myWidget.mscTrigger.connect(msc.startStop)

    # find dockable widgets (containing TM and TC editors)
    docks = myWidget.findChildren(QDockWidget)
    firstTC = None
    firstTM = None
    # Arrange them in a nice way: group the TM and TC in tabs
    myWidget.setTabPosition(Qt.RightDockWidgetArea, QTabWidget.North)
    for dock in docks:
        if dock.objectName().startswith('tm'):
            if firstTM is None:
                firstTM = dock
            else:
                myWidget.tabifyDockWidget(firstTM, dock)
        else:
            if firstTC is None:
                firstTC = dock
            else:
                myWidget.tabifyDockWidget(firstTC, dock)
        dock.setMinimumWidth(700 - logoWidth)

    # find TC/TM Editors
    myEdits = myWidget.findChildren(asn1Editor)

    #Pattern to create/add a new dock window - easy!
    #newDock=QDockWidget('Hello', parent=myWidget)
    #newDock.setFloating(True)
    #myWidget.addDockWidget(Qt.RightDockWidgetArea, newDock)

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    # Create a dock to handle the display of SDL diagrams
    try:
        sdl = sdlHandler(myWidget)
        sdl.dll = dll
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        sdl.msc.connect(msc.addToMsc)
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        sdl.msc_undo.connect(msc.undo)
        sdl.msc_redo.connect(msc.redo)
        sdl.msc_macro_start.connect(msc.start_undo_macro)
        sdl.msc_macro_stop.connect(msc.stop_undo_macro)
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        sdl.allowed_messages.connect(myWidget.allowed_editors)
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    except IOError as err:
        log.info('SDL viewer not available - ' + str(err))
        log.info(traceback.format_exc())
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        sdl = None
    else:
        sdlButton = toolbar.addAction('SDL')
        sdlButton.triggered.connect(sdl.startStop)
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        if options.properties:
            sdl.load_properties(options.properties)
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    # Set the ASN.1 data type of each TC editor
    for editor in myEdits:
        # Enable mouse tracking - to display tips in the status bar
        editor.setMouseTracking(True)
        editor.entered.connect(editor.displaytip)
        # Hide columns showing the ASN.1 Type and constraint
        editor.hideExtraColumns()
        # Import the backend generated by the pyside_B_mapper from aadl2glueC
        encoder_backend = __import__("%s_backend" % editor.objectName())
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        # Set the callback in the backend to forward incoming TM to the GUI
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        encoder_backend.editor = editor
        TMHandler = type('TMHandler', (QObject,), {'got_tm': Signal()})
        encoder_backend.tm_callback = TMHandler()
        encoder_backend.tm_callback.got_tm.connect(editor.receivedTM)

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        # Set the callback in the backend to send messages via the dll
        # (handled in the SDL backend, also managing MSC traces)
        if dll:
            DLLHandler = type('DLLHandler', (QObject,),
                              {'dll': Signal(unicode, type, type)})
            encoder_backend.send_via_dll = DLLHandler()
            encoder_backend.send_via_dll.dll.connect(sdl.send_tc)
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            if isinstance(editor, asn1Viewer):
                # Connect TM to MSC
                editor.msc.connect(sdl.add_to_msc)
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        else:
            editor.msc.connect(msc.addToMsc)

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        encoder_backend.log = log
        encoder_backend.statusbar = statusbar
        editor.statusBarMessage.connect(statusbar.showMessage)
        if msgQ:
            encoder_backend.setMsgQ()
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        elif udp:
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            encoder_backend.setUDP()
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        elif dll:
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            # Provide pointer to the shared lib to the backends
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            encoder_backend.setSharedLib(dll)
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        editor.backend = encoder_backend
        editor.log = log
        dockWidget = editor.parent()
        myButtons = dockWidget.findChildren(QPushButton)

        if isinstance(editor, asn1Viewer):  # TM Viewer
            hasTM = True
            editor.setAsn1Model(datamodel.tm[editor.objectName()])
            g_tmPool[encoder_backend.tmId] = editor
            editor.setPlotterBackend(plotter)
            for button in myButtons:
                if button.objectName() == 'plotButton':
                    myMenu = QMenu()
                    action = QAction("New Plot", myMenu)
                    myMenu.addAction(action)
                    button.setMenu(myMenu)
                    action.triggered.connect(editor.newPlot)
                    plotter.addPlotMenu(myMenu, editor)
                elif button.objectName() == 'meterButton':
                    button.clicked.connect(editor.meter)
                else:
                    button.hide()
                    # button.clicked.connect(editor.unmeter)
        else:  # TC Editor
            editor.setAsn1Model(datamodel.tc[editor.objectName()])
            if not msgQ:
                encoder_backend.udpController = udp
            for button in myButtons:
                if button.objectName() == 'saveButton':
                    button.clicked.connect(editor.saveTC)
                elif button.objectName() == 'loadButton':
                    button.clicked.connect(editor.loadTC)
                elif button.objectName() == 'sendButton':
                    button.clicked.connect(editor.sendTC)

    # Create a thread to poll the message queue or open an UDP socket
    if msgQ:
        if hasTM:
            pollingThread = MsgQ_Poller(log=log)
            for editor in myEdits:
                if isinstance(editor, asn1Viewer):
                    pollingThread.tm.connect(editor.receivedTM)
            pollingThread.start()
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    elif udp:
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        if hasTM:
            udp.tmPool = g_tmPool
        udp.start(hasTM)
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    elif dll:
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        # Nothing to do, the TM callbacks have already been connected (above)
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        pass
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    # Associate the plotter manager to the main app
    myWidget.plotter = plotter

    # Set list of editors to the main app
    myWidget.editors = myEdits

    # If applicable, restore window geometry from a previous session
    if not options.reset:
        log.info('Restoring windows layout (use --reset to discard)')
        myWidget.restoreApplicationState()
    else:
        log.info('Ignoring and deleting previously stored windows layout')

    # Display the main window (including TM/TC editors)
    myWidget.show()
    ret = app.exec_()
    sys.stdout = sys.__stdout__
    if msgQ and hasTM:
        pollingThread._bDie = True
        pollingThread.wait()
    return ret

if __name__ == '__main__':
    sys.exit(gui())