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""" |
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Enarksh |
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Copyright 2013-2016 Set Based IT Consultancy |
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Licence MIT |
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""" |
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import enarksh |
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from enarksh.controller.StateChange import StateChange |
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from enarksh.controller.node.Node import Node |
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class SimpleNode(Node): |
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""" |
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Class for objects in the controller of type 'SimpleJob'. |
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""" |
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# ------------------------------------------------------------------------------------------------------------------ |
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def is_simple_node(self): |
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""" |
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Returns True. |
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:rtype: bool |
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""" |
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return True |
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# ------------------------------------------------------------------------------------------------------------------ |
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def is_complex_node(self): |
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""" |
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Returns False. |
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:rtype: bool |
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""" |
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return False |
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# ------------------------------------------------------------------------------------------------------------------ |
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@StateChange.wrapper |
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def start(self): |
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""" |
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Does the housekeeping for starting this node. Returns True if an actual job must be started by the spawner. |
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Returns False otherwise. |
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:rtype: bool |
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""" |
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# Acquire the required resources of this node. |
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self.acquire_resources() |
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# Set the status of this node to running. |
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self._set_rst_id(enarksh.ENK_RST_ID_RUNNING) |
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return True |
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# ------------------------------------------------------------------------------------------------------------------ |
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@StateChange.wrapper |
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def stop(self, exit_status): |
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""" |
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Does the housekeeping when the node has stopped. |
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:param int exit_status: The exits status of the job. |
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""" |
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# Release all by this node consumed resources. |
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self.release_resources() |
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# Save the exit status of the job. |
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self._exit_status = exit_status |
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# Update the run status of this node based on the exit status of the job. |
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if exit_status == 0: |
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self._set_rst_id(enarksh.ENK_RST_ID_COMPLETED) |
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else: |
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self._set_rst_id(enarksh.ENK_RST_ID_ERROR) |
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# ------------------------------------------------------------------------------------------------------------------ |
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@StateChange.wrapper |
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def restart(self): |
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""" |
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Restart this node and its successors. |
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""" |
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if self.rst_id in (enarksh.ENK_RST_ID_ERROR, enarksh.ENK_RST_ID_COMPLETED): |
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self._renew() |
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self._recompute_run_status() |
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# ------------------------------------------------------------------------------------------------------------------ |
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@StateChange.wrapper |
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def restart_failed(self): |
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""" |
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Restart this node. |
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""" |
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if self.rst_id == enarksh.ENK_RST_ID_ERROR: |
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self._renew() |
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self._recompute_run_status() |
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else: |
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raise Exception("Not possible to restart node with rst_id '{0!s}'.".format(self.rst_id)) |
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# ---------------------------------------------------------------------------------------------------------------------- |
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SetBased /
py-enarksh
