Exemplo n.º 1
0
def checkConnectivity(controller=None):
    """Check for Internet connectivity - if no Internet connectivity is available,
    wait for up to 30 seconds and then fail (this is used to handle cases where
    the device was offline and the Internet connection is just being established)"""
    status = modrana.dmod.connectivity_status
    if status is constants.CONNECTIVITY_UNKNOWN:  # Connectivity status monitoring not supported
        return status  # skip
    elif status is constants.ONLINE:
        return status  # Internet connectivity is most probably available
    elif status is constants.OFFLINE:
        startTimestamp = time.time()
        elapsed = 0
        if controller:
            controller.status = "waiting for Internet connectivity"
        while elapsed < constants.INTERNET_CONNECTIVITY_TIMEOUT:
            status = modrana.dmod.connectivity_status
            log.info('waiting for internet connectivity')
            log.info(status)
            if status == True or status is None:
                break
            # check if the thread was cancelled
            if controller and controller.callback is None:
                # the thread was cancelled
                log.info("connectivity status check cancelled")
                status = constants.CONNECTIVITY_UNKNOWN
                break
            time.sleep(1)
            elapsed = time.time() - startTimestamp
        if status is constants.OFFLINE:
            modrana.notify("requirements: failed to connect to the Internet")
        return status
    else:
        log.warning('warning, unknown connection status:')
        log.warning(status)
        return status
Exemplo n.º 2
0
def checkConnectivity(controller=None):
    """Check for Internet connectivity - if no Internet connectivity is available,
    wait for up to 30 seconds and then fail (this is used to handle cases where
    the device was offline and the Internet connection is just being established)"""
    status = modrana.dmod.connectivityStatus
    if status is constants.CONNECTIVITY_UNKNOWN: # Connectivity status monitoring not supported
        return status # skip
    elif status is constants.ONLINE:
        return status # Internet connectivity is most probably available
    elif status is constants.OFFLINE:
        startTimestamp = time.time()
        elapsed = 0
        if controller:
            controller.status = "waiting for Internet connectivity"
        while elapsed < constants.INTERNET_CONNECTIVITY_TIMEOUT:
            status = modrana.dmod.connectivityStatus
            log.info('waiting for internet connectivity')
            log.info(status)
            if status == True or status is None:
                break
            # check if the thread was cancelled
            if controller and controller.callback is None:
                # the thread was cancelled
                log.info("connectivity status check cancelled")
                status = constants.CONNECTIVITY_UNKNOWN
                break
            time.sleep(1)
            elapsed = time.time() - startTimestamp
        if status is constants.OFFLINE:
            modrana.notify("requirements: failed to connect to the Internet")
        return status
    else:
        log.warning('warning, unknown connection status:')
        log.warning(status)
        return status
Exemplo n.º 3
0
def locateCurrentPosition(controller=None):
    """Try to locate current position and return it when done or time out"""
    result = None
    sleepTime = 0.5  # in seconds
    pos = modrana.get('pos', None)
    fix = modrana.get('fix', 1)
    # check if GPS usage is explicitly disabled in modRana
    gpsEnabled = modrana.get('GPSEnabled')
    if gpsEnabled == False:
        if pos:
            modrana.notify("GPS OFF, using last known position", 5000)
            return Point(*pos)
        else:
            modrana.notify("GPS OFF, no last known position", 5000)
            return None

    if fix > 1 and pos:
        return Point(*pos)  # fix found, return it at once

    # check if GPS hardware has been enabled
    location = modrana.m.get("location")
    if not location.enabled:
        # location usage has not be disabled but location
        # has not been started, so start location
        location.start_location()

    # wait for the fix
    startTimestamp = time.time()
    elapsed = 0
    if controller:
        controller.status = "GPS fix in progress"
    while elapsed < constants.LOCATION_TIMEOUT:
        pos = modrana.get('pos', None)
        fix = modrana.get('fix', 1)
        if fix > 1 and pos:
            break
        time.sleep(sleepTime)
        elapsed = time.time() - startTimestamp
    if fix > 1 and pos:  # got GPS fix ?
        return Point(*pos)
    else:  # no GPS lock
        pos = modrana.get("pos")
        if pos:
            modrana.notify("no fix, using last known position", 5000)
            return Point(*pos)
        else:
            modrana.notify("failed to get GPS fix", 5000)
            return None
Exemplo n.º 4
0
def locateCurrentPosition(controller=None):
    """Try to locate current position and return it when done or time out"""
    result = None
    sleepTime = 0.5 # in seconds
    pos = modrana.get('pos', None)
    fix = modrana.get('fix', 1)
    # check if GPS usage is explicitly disabled in modRana
    gpsEnabled = modrana.get('GPSEnabled')
    if gpsEnabled == False:
        if pos:
            modrana.notify("GPS OFF, using last known position", 5000)
            return Point(*pos)
        else:
            modrana.notify("GPS OFF, no last known position", 5000)
            return None

    if fix > 1 and pos:
        return Point(*pos)  # fix found, return it at once

    # check if GPS hardware has been enabled
    location = modrana.m.get("location")
    if not location.enabled:
        # location usage has not be disabled but location
        # has not been started, so start location
        location.startLocation()

    # wait for the fix
    startTimestamp = time.time()
    elapsed = 0
    if controller:
        controller.status = "GPS fix in progress"
    while elapsed < constants.LOCATION_TIMEOUT:
        pos = modrana.get('pos', None)
        fix = modrana.get('fix', 1)
        if fix > 1 and pos:
            break
        time.sleep(sleepTime)
        elapsed = time.time() - startTimestamp
    if fix > 1 and pos: # got GPS fix ?
        return Point(*pos)
    else: # no GPS lock
        pos = modrana.get("pos")
        if pos:
            modrana.notify("no fix, using last known position", 5000)
            return Point(*pos)
        else:
            modrana.notify("failed to get GPS fix", 5000)
            return None