1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
# Write out scalar information for C++. The scalars are defined
# in a file provided as a command-line argument.
from __future__ import print_function
from collections import OrderedDict
from mozparsers.shared_telemetry_utils import static_assert, ParserError
from mozparsers import parse_scalars
import json
import sys
import buildconfig
from os import path
COMPONENTS_PATH = path.abspath(
path.join(path.dirname(__file__), path.pardir, path.pardir)
)
sys.path.append(
path.join(COMPONENTS_PATH, "glean", "build_scripts", "glean_parser_ext")
)
from string_table import StringTable
# The banner/text at the top of the generated file.
banner = """/* This file is auto-generated, only for internal use in TelemetryScalar.h,
see gen_scalar_data.py. */
"""
file_header = """\
#ifndef mozilla_TelemetryScalarData_h
#define mozilla_TelemetryScalarData_h
#include "core/ScalarInfo.h"
namespace {
"""
file_footer = """\
} // namespace
#endif // mozilla_TelemetryScalarData_h
"""
def write_scalar_info(
scalar,
output,
name_index,
expiration_index,
store_index,
store_count,
key_count,
key_index,
):
"""Writes a scalar entry to the output file.
:param scalar: a ScalarType instance describing the scalar.
:param output: the output stream.
:param name_index: the index of the scalar name in the strings table.
:param expiration_index: the index of the expiration version in the strings table.
"""
if scalar.record_on_os(buildconfig.substs["OS_TARGET"]):
print(
" {{ {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {} }},".format(
scalar.nsITelemetry_kind,
name_index,
expiration_index,
scalar.dataset,
" | ".join(scalar.record_in_processes_enum),
"true" if scalar.keyed else "false",
key_count,
key_index,
" | ".join(scalar.products_enum),
store_count,
store_index,
),
file=output,
)
def write_scalar_tables(scalars, output):
"""Writes the scalar and strings tables to an header file.
:param scalars: a list of ScalarType instances describing the scalars.
:param output: the output stream.
"""
string_table = StringTable()
store_table = []
total_store_count = 0
keys_table = []
total_key_count = 0
print("const ScalarInfo gScalars[] = {", file=output)
for s in scalars:
# We add both the scalar label and the expiration string to the strings
# table.
name_index = string_table.stringIndex(s.label)
exp_index = string_table.stringIndex(s.expires)
stores = s.record_into_store
store_index = 0
if stores == ["main"]:
# if count == 1 && offset == UINT16_MAX -> only main store
store_index = "UINT16_MAX"
else:
store_index = total_store_count
store_table.append((s.label, string_table.stringIndexes(stores)))
total_store_count += len(stores)
keys = s.keys
key_index = 0
if len(keys) > 0:
key_index = total_key_count
keys_table.append((s.label, string_table.stringIndexes(keys)))
total_key_count += len(keys)
# Write the scalar info entry.
write_scalar_info(
s,
output,
name_index,
exp_index,
store_index,
len(stores),
len(keys),
key_index,
)
print("};", file=output)
string_table_name = "gScalarsStringTable"
string_table.writeDefinition(output, string_table_name)
static_assert(
output, "sizeof(%s) <= UINT32_MAX" % string_table_name, "index overflow"
)
print("\nconstexpr uint32_t gScalarKeysTable[] = {", file=output)
for name, indexes in keys_table:
print("/* %s */ %s," % (name, ", ".join(map(str, indexes))), file=output)
print("};", file=output)
store_table_name = "gScalarStoresTable"
print("\n#if defined(_MSC_VER) && !defined(__clang__)", file=output)
print("const uint32_t {}[] = {{".format(store_table_name), file=output)
print("#else", file=output)
print("constexpr uint32_t {}[] = {{".format(store_table_name), file=output)
print("#endif", file=output)
for name, indexes in store_table:
print("/* %s */ %s," % (name, ", ".join(map(str, indexes))), file=output)
print("};", file=output)
static_assert(
output, "sizeof(%s) <= UINT16_MAX" % store_table_name, "index overflow"
)
def parse_scalar_definitions(filenames):
scalars = []
for filename in filenames:
try:
batch = parse_scalars.load_scalars(filename)
scalars.extend(batch)
except ParserError as ex:
print("\nError processing %s:\n%s\n" % (filename, str(ex)), file=sys.stderr)
sys.exit(1)
return scalars
def generate_JSON_definitions(output, *filenames):
"""Write the scalar definitions to a JSON file.
:param output: the file to write the content to.
:param filenames: a list of filenames provided by the build system.
We only support a single file.
"""
scalars = parse_scalar_definitions(filenames)
scalar_definitions = OrderedDict()
for scalar in scalars:
category = scalar.category
if category not in scalar_definitions:
scalar_definitions[category] = OrderedDict()
scalar_definitions[category][scalar.name] = OrderedDict(
{
"kind": scalar.nsITelemetry_kind,
"keyed": scalar.keyed,
"keys": scalar.keys,
"record_on_release": True
if scalar.dataset_short == "opt-out"
else False,
# We don't expire dynamic-builtin scalars: they're only meant for
# use in local developer builds anyway. They will expire when rebuilding.
"expired": False,
"stores": scalar.record_into_store,
"expires": scalar.expires,
"products": scalar.products,
}
)
json.dump(scalar_definitions, output)
def main(output, *filenames):
# Load the scalars first.
scalars = parse_scalar_definitions(filenames)
# Write the scalar data file.
print(banner, file=output)
print(file_header, file=output)
write_scalar_tables(scalars, output)
print(file_footer, file=output)
if __name__ == "__main__":
main(sys.stdout, *sys.argv[1:])
|
