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"""Kytos Core-Defined Exceptions.""" |
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class KytosCoreException(Exception): |
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"""Exception thrown when KytosCore is broken.""" |
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def __str__(self): |
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"""Return message of KytosCoreException.""" |
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return 'KytosCore exception: ' + super().__str__() |
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class KytosSwitchOfflineException(Exception): |
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"""Exception thrown when a switch is offline.""" |
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def __init__(self, switch): |
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"""Require a switch. |
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Args: |
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switch (:class:`~kytos.core.switch.Switch`): A switch offline. |
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""" |
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super().__init__() |
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self.switch = switch |
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def __str__(self): |
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"""Return message of KytosSwitchOfflineException.""" |
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msg = 'The switch {} is not reachable. Please check the connection ' |
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msg += 'between the switch and the controller.' |
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return msg.format(self.switch.dpid) |
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class KytosEventException(Exception): |
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"""Exception thrown when a KytosEvent have an illegal use.""" |
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def __init__(self, message="KytosEvent exception", event=None): |
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"""Assign parameters to instance variables. |
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Args: |
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message (string): message from KytosEventException. |
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event (:class:`~kytos.core.events.KytosEvent`): Event malformed. |
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""" |
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super().__init__() |
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self.message = message |
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self.event = event |
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def __str__(self): |
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"""Return the full message from KytosEventException.""" |
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message = self.message |
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if self.event: |
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message += ". EventType: " + type(self.event) |
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return message |
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class KytosWrongEventType(KytosEventException): |
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"""Exception related to EventType. |
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When related to buffers, it means that the EventType is not allowed on |
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that buffer. |
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""" |
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class KytosNoTagAvailableError(Exception): |
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"""Exception raised when a link has no vlan available.""" |
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def __init__(self, link): |
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"""Require a link. |
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Args: |
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link (:class:`~kytos.core.link.Link`): A link with no vlan |
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available. |
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""" |
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super().__init__() |
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self.link = link |
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def __str__(self): |
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"""Full message.""" |
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msg = f'Link {self.link.id} has no vlan available.' |
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return msg |
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# Exceptions related to NApps |
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class KytosNAppException(Exception): |
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"""Exception raised on a KytosNApp.""" |
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def __init__(self, message="KytosNApp exception"): |
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"""Assign the parameters to instance variables. |
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Args: |
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message (string): message from KytosNAppException. |
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""" |
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super().__init__() |
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self.message = message |
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def __str__(self): |
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"""Return the message from KytosNAppException.""" |
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return self.message |
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class KytosNAppMissingInitArgument(KytosNAppException): |
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"""Exception thrown when NApp have a missing init argument.""" |
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def __init__(self, message="KytosNAppMissingInitArgument"): |
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"""Assing parameters to instance variables. |
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Args: |
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message (str): Name of the missed argument. |
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""" |
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super().__init__(message=message) |
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kytos /
kytos
