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')
20ap.add_argument('--file', type=argparse.FileType('r'), default=sys.stdin)
21args = ap.parse_args()
22
23Lines = args.file.readlines()
24
25def isfloat(num):
26  try:
27    float(num)
28    return True
29  except ValueError:
30    return False
31
32
33def isint(num):
34  try:
35    int(num)
36    return True
37  except ValueError:
38    return False
39
40def is_counter_value(num):
41  return isfloat(num) or num == '<not counted>' or num == '<not supported>'
42
43def check_json_output(expected_items):
44  checks = {
45      'aggregate-number': lambda x: isfloat(x),
46      'core': lambda x: True,
47      'counter-value': lambda x: is_counter_value(x),
48      'cgroup': lambda x: True,
49      'cpu': lambda x: isint(x),
50      'die': lambda x: True,
51      'event': lambda x: True,
52      'event-runtime': lambda x: isfloat(x),
53      'interval': lambda x: isfloat(x),
54      'metric-unit': lambda x: True,
55      'metric-value': lambda x: isfloat(x),
56      'node': lambda x: True,
57      'pcnt-running': lambda x: isfloat(x),
58      'socket': lambda x: True,
59      'thread': lambda x: True,
60      'unit': lambda x: True,
61  }
62  input = '[\n' + ','.join(Lines) + '\n]'
63  for item in json.loads(input):
64    if expected_items != -1:
65      count = len(item)
66      if count != expected_items and count >= 1 and count <= 4 and 'metric-value' in item:
67        # Events that generate >1 metric may have isolated metric
68        # values and possibly other prefixes like interval, core and
69        # aggregate-number.
70        pass
71      elif count != expected_items:
72        raise RuntimeError(f'wrong number of fields. counted {count} expected {expected_items}'
73                           f' in \'{item}\'')
74    for key, value in item.items():
75      if key not in checks:
76        raise RuntimeError(f'Unexpected key: key={key} value={value}')
77      if not checks[key](value):
78        raise RuntimeError(f'Check failed for: key={key} value={value}')
79
80
81try:
82  if args.no_args or args.system_wide or args.event:
83    expected_items = 7
84  elif args.interval or args.per_thread or args.system_wide_no_aggr:
85    expected_items = 8
86  elif args.per_core or args.per_socket or args.per_node or args.per_die:
87    expected_items = 9
88  else:
89    # If no option is specified, don't check the number of items.
90    expected_items = -1
91  check_json_output(expected_items)
92except:
93  print('Test failed for input:\n' + '\n'.join(Lines))
94  raise
95