old_contents: import json
  import httplib
  import requests
  
  from st2actions.runners.pythonrunner import Action
  
  __all__ = [
      'PostMessageAction'
  ]
  
  class PostMessageAction(Action):
      def run(self, message, channel, user=None, whisper=False):
          endpoint = self.config['endpoint']
  
          headers = {}
          headers['Content-Type'] = 'application/json'
          body = {
              'channel': channel,
              'message': message
          }
  
          if user:
              body['user'] = user
  
          if whisper == True:
              body['whisper'] = whisper
  
          data = json.dumps(body)
          response = requests.post(url=endpoint, headers=headers, data=data)
  
          if response.status_code == httplib.OK:
              self.logger.info('Message successfully posted')
          else:
              self.logger.exception('Failed to post message: %s' % (response.text))
  
          return True
  
new_contents: import json
  import httplib
  import requests
  
  from st2actions.runners.pythonrunner import Action
  
  __all__ = [
      'PostMessageAction'
  ]
  
  class PostMessageAction(Action):
      def run(self, message, channel, user=None, whisper=False):
          endpoint = self.config['endpoint']
          url = endpoint + "/hubot/st2"
  
          headers = {}
          headers['Content-Type'] = 'application/json'
          body = {
              'channel': channel,
              'message': message
          }
  
          if user:
              body['user'] = user
  
          if whisper == True:
              body['whisper'] = whisper
  
          data = json.dumps(body)
          response = requests.post(url=endpoint, headers=headers, data=data)
  
          if response.status_code == httplib.OK:
              self.logger.info('Message successfully posted')
          else:
              self.logger.exception('Failed to post message: %s' % (response.text))
  
          return True
  
subject: add hubot HTTP endpoint