heron/instance/src/python/instance/st_heron_instance.py
def _handle_state_change_msg(self, new_helper):
    """Called when state change is commanded by stream manager"""
    assert self.my_pplan_helper is not None
    assert self.my_instance is not None and self.my_instance.py_class is not None

    if self.my_pplan_helper.get_topology_state() != new_helper.get_topology_state():
      # handle state change
      # update the pplan_helper
      self.my_pplan_helper = new_helper
      if new_helper.is_topology_running():
        if not self.is_instance_started:
          self.start_instance_if_possible()
        self.my_instance.py_class.invoke_activate()
      elif new_helper.is_topology_paused():
        self.my_instance.py_class.invoke_deactivate()
      else:
        raise RuntimeError("Unexpected TopologyState update: %s" % new_helper.get_topology_state())
    else:
      Log.info("Topology state remains the same.")
def _handle_state_change_msg(self, new_helper):
    """Called when state change is commanded by stream manager"""
    assert self.my_pplan_helper is not None
    assert self.my_instance is not None and self.my_instance.py_class is not None

    if self.my_pplan_helper.get_topology_state() != new_helper.get_topology_state():
      # handle state change
      # update the pplan_helper
      self.my_pplan_helper = new_helper
      if new_helper.is_topology_running():
        if not self.is_instance_started:
          self.start_instance_if_possible()
        self.my_instance.py_class.invoke_activate()
      elif new_helper.is_topology_paused():
        self.my_instance.py_class.invoke_deactivate()
      else:
        raise RuntimeError("Unexpected TopologyState update: %s" % new_helper.get_topology_state())
    else:
      Log.info("Topology state remains the same.")
def _handle_state_change_msg ( self , new_helper ) : assert self . my_pplan_helper is not None assert self . my_instance is not None and self . my_instance . py_class is not None if self . my_pplan_helper . get_topology_state ( ) != new_helper . get_topology_state ( ) : # handle state change # update the pplan_helper self . my_pplan_helper = new_helper if new_helper . is_topology_running ( ) : if not self . is_instance_started : self . start_instance_if_possible ( ) self . my_instance . py_class . invoke_activate ( ) elif new_helper . is_topology_paused ( ) : self . my_instance . py_class . invoke_deactivate ( ) else : raise RuntimeError ( "Unexpected TopologyState update: %s" % new_helper . get_topology_state ( ) ) else : Log . info ( "Topology state remains the same." )
Called when state change is commanded by stream manager
Called when state change is commanded by stream manager