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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def save(self, wf_state):
 """ write wf state to DB through MQ >> Worker >> _zops_sync_wf_cache Args: wf_state dict: wf state """

        self.wf_state = wf_state
        self.wf_state['role_id'] = self.current.role_id
        self.set(self.wf_state)
        if self.wf_state['name'] not in settings.EPHEMERAL_WORKFLOWS:
            self.publish(job='_zops_sync_wf_cache',
                         token=self.db_key)