1#!/usr/bin/python
2# SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
3# Basic sanity check of perf JSON output as specified in the man page.
4
5import argparse
6import sys
7import json
8
9ap = argparse.ArgumentParser()
10ap.add_argument('--no-args', action='store_true')
11ap.add_argument('--interval', action='store_true')
12ap.add_argument('--system-wide-no-aggr', action='store_true')
13ap.add_argument('--system-wide', action='store_true')
14ap.add_argument('--event', action='store_true')
15ap.add_argument('--per-core', action='store_true')
16ap.add_argument('--per-thread', action='store_true')
17ap.add_argument('--per-die', action='store_true')
18ap.add_argument('--per-node', action='store_true')
19ap.add_argument('--per-socket', action='store_true')
20args = ap.parse_args()
21
22Lines = sys.stdin.readlines()
23
24def isfloat(num):
25  try:
26    float(num)
27    return True
28  except ValueError:
29    return False
30
31
32def isint(num):
33  try:
34    int(num)
35    return True
36  except ValueError:
37    return False
38
39def is_counter_value(num):
40  return isfloat(num) or num == '<not counted>' or num == '<not supported>'
41
42def check_json_output(expected_items):
43  checks = {
44      'aggregate-number': lambda x: isfloat(x),
45      'core': lambda x: True,
46      'counter-value': lambda x: is_counter_value(x),
47      'cgroup': lambda x: True,
48      'cpu': lambda x: isint(x),
49      'die': lambda x: True,
50      'event': lambda x: True,
51      'event-runtime': lambda x: isfloat(x),
52      'interval': lambda x: isfloat(x),
53      'metric-unit': lambda x: True,
54      'metric-value': lambda x: isfloat(x),
55      'node': lambda x: True,
56      'pcnt-running': lambda x: isfloat(x),
57      'socket': lambda x: True,
58      'thread': lambda x: True,
59      'unit': lambda x: True,
60  }
61  input = '[\n' + ','.join(Lines) + '\n]'
62  for item in json.loads(input):
63    if expected_items != -1:
64      count = len(item)
65      if count != expected_items and count >= 1 and count <= 4 and 'metric-value' in item:
66        # Events that generate >1 metric may have isolated metric
67        # values and possibly other prefixes like interval, core and
68        # aggregate-number.
69        pass
70      elif count != expected_items:
71        raise RuntimeError(f'wrong number of fields. counted {count} expected {expected_items}'
72                           f' in \'{item}\'')
73    for key, value in item.items():
74      if key not in checks:
75        raise RuntimeError(f'Unexpected key: key={key} value={value}')
76      if not checks[key](value):
77        raise RuntimeError(f'Check failed for: key={key} value={value}')
78
79
80try:
81  if args.no_args or args.system_wide or args.event:
82    expected_items = 7
83  elif args.interval or args.per_thread or args.system_wide_no_aggr:
84    expected_items = 8
85  elif args.per_core or args.per_socket or args.per_node or args.per_die:
86    expected_items = 9
87  else:
88    # If no option is specified, don't check the number of items.
89    expected_items = -1
90  check_json_output(expected_items)
91except:
92  print('Test failed for input:\n' + '\n'.join(Lines))
93  raise
94