1 #!/usr/bin/env python 2 # 3 # Copyright (C) 2016 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 18 import os 19 import sys 20 import time 21 22 LOG_DIR = '/tmp' 23 24 25 def GetLatestLog(): 26 '''Find the latest vts runner log folder in log directory and return its content. 27 28 Returns: 29 (string, string), returns the latest log file path and log content 30 ''' 31 folders = [os.path.join(LOG_DIR, folder_name) 32 for folder_name in os.listdir(LOG_DIR) 33 if os.path.isdir(os.path.join(LOG_DIR, folder_name)) and 34 folder_name.startswith('vts-runner-log')] 35 36 try: 37 folders.sort( 38 lambda folder1, folder2: int(os.path.getmtime(folder1) - os.path.getmtime(folder2))) 39 folder_latest = folders[-1] 40 log_path_latest = os.path.join(folder_latest, 41 os.listdir(folder_latest)[0], 'latest', 42 'test_run_details.txt') 43 with open(log_path_latest, 'r') as log_latest: 44 return (log_path_latest, log_latest.read()) 45 except Exception as e: 46 return (None, None) 47 48 49 def StartMonitoring(path_only): 50 '''Pull the latest vts runner log in a loop, and print out any new contents. 51 52 Args: 53 path_only: bool, only print out the latest log path in temporary directory. 54 ''' 55 is_first_time = True 56 last_log_path = None 57 last_text = '' 58 while True: 59 log_path_latest, text_latest = GetLatestLog() 60 61 if path_only: 62 print log_path_latest 63 return 64 65 if log_path_latest is None: # Case: cannot find any runner log 66 time.sleep(2) 67 continue 68 69 if last_log_path == log_path_latest: 70 text_new = text_latest[len(last_text):] 71 last_text = text_latest 72 if text_new: # Case: runner log file changed 73 if is_first_time: 74 is_first_time = False 75 print text_new 76 continue 77 lines = text_new.split('\n') 78 for l in lines: 79 print l 80 time.sleep(0.6 / len(lines)) 81 else: # Case: runner log file didn't change 82 time.sleep(1) 83 else: # Case: found a new runner log file 84 last_text = '' 85 last_log_path = log_path_latest 86 print '\n' * 6 + '=' * 24 + 'new file' + '=' * 24 + '\n' * 6 87 time.sleep(1) 88 89 90 def PrintUsage(): 91 print 'A script to read VTS Runner\'s log from temporary directory.' 92 print 'Usage:' 93 print ' -h, --help: print usage.' 94 print ' -p, --path-only: print path to the latest runner file only.' 95 print ' You may pipe the result to vim for searching.' 96 print ' Example: script/monitor-runner-output.py --path-only | xargs gedit' 97 print ' -m, --monitor: print VTS runner\'s output in close to real time' 98 print ' If no argument is provided, this script will keep pulling the latest log and print it out.' 99 100 101 if __name__ == "__main__": 102 argv = sys.argv 103 path_only = False 104 if len(argv) == 1 or argv[1] == '-h' or argv[1] == '--help': 105 PrintUsage() 106 exit() 107 elif argv[1] == '-p' or argv[1] == '--path-only': 108 path_only = True 109 elif argv[1] == '-m' or argv[1] == '--monitor': 110 path_only = False 111 StartMonitoring(path_only) 112
