1 #!/usr/bin/env python 2 # 3 # Copyright 2017 - The Android Open Source Project 4 # 5 # Licensed under the Apache License, Version 2.0 (the "License"); 6 # you may not use this file except in compliance with the License. 7 # You may obtain a copy of the License at 8 # 9 # http://www.apache.org/licenses/LICENSE-2.0 10 # 11 # Unless required by applicable law or agreed to in writing, software 12 # distributed under the License is distributed on an "AS IS" BASIS, 13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 # See the License for the specific language governing permissions and 15 # limitations under the License. 16 17 from metrics.metric import Metric 18 19 20 class NumUsersMetric(Metric): 21 22 COMMAND = 'users | wc -w' 23 # Fields for response dictionary 24 NUM_USERS = 'num_users' 25 26 def gather_metric(self): 27 """Returns total (nonunique) users currently logged in to current host 28 29 Returns: 30 A dict with the following fields: 31 num_users : an int representing the number of users 32 33 """ 34 # Example stdout: 35 # 2 36 result = self._shell.run(self.COMMAND).stdout 37 response = {self.NUM_USERS: int(result)} 38 return response 39
