src/ci/docker/x86_64-gnu-tools/checkregression.py

   1 #!/usr/bin/env python
   2 # -*- coding: utf-8 -*-
   3
   4 ## This script has two purposes: detect any tool that *regressed*, which is used
   5 ## during the week before the beta branches to reject PRs; and detect any tool
   6 ## that *changed* to see if we need to update the toolstate repo.
   7
   8 import sys
   9 import json
  10
  11 # Regressions for these tools during the beta cutoff week do not cause failure.
  12 # See `status_check` in `checktools.sh` for tools that have to pass on the
  13 # beta/stable branches.
  14 REGRESSION_OK = ["rustc-guide", "miri", "embedded-book"]
  15
  16 if __name__ == '__main__':
  17     os_name = sys.argv[1]
  18     toolstate_file = sys.argv[2]
  19     current_state = sys.argv[3]
  20     verb = sys.argv[4] # 'regressed' or 'changed'
  21
  22     with open(toolstate_file, 'r') as f:
  23         toolstate = json.load(f)
  24     with open(current_state, 'r') as f:
  25         current = json.load(f)
  26
  27     regressed = False
  28     for cur in current:
  29         tool = cur['tool']
  30         state = cur[os_name]
  31         new_state = toolstate.get(tool, '')
  32         if verb == 'regressed':
  33             updated = new_state < state
  34         elif verb == 'changed':
  35             updated = new_state != state
  36         else:
  37             print('Unknown verb {}'.format(updated))
  38             sys.exit(2)
  39         if updated:
  40             print(
  41                 'The state of "{}" has {} from "{}" to "{}"'
  42                 .format(tool, verb, state, new_state)
  43             )
  44             if not (verb == 'regressed' and tool in REGRESSION_OK):
  45                 regressed = True
  46
  47     if regressed:
  48         sys.exit(1)