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
|
# frozen_string_literal: true
require 'json'
require 'uri'
module Launchable
##
# JsonStreamWriter writes a JSON file using a stream.
# By utilizing a stream, we can minimize memory usage, especially for large files.
class JsonStreamWriter
def initialize(path)
@file = File.open(path, "w")
@file.write("{")
@indent_level = 0
@is_first_key_val = true
@is_first_obj = true
write_new_line
end
def write_object obj
if @is_first_obj
@is_first_obj = false
else
write_comma
write_new_line
end
@indent_level += 1
@file.write(to_json_str(obj))
@indent_level -= 1
@is_first_key_val = true
# Occasionally, invalid JSON will be created as shown below, especially when `--repeat-count` is specified.
# {
# "testPath": "file=test%2Ftest_timeout.rb&class=TestTimeout&testcase=test_allows_zero_seconds",
# "status": "TEST_PASSED",
# "duration": 2.7e-05,
# "createdAt": "2024-02-09 12:21:07 +0000",
# "stderr": null,
# "stdout": null
# }: null <- here
# },
# To prevent this, IO#flush is called here.
@file.flush
end
def write_array(key)
@indent_level += 1
@file.write(to_json_str(key))
write_colon
@file.write(" ", "[")
write_new_line
end
def close
return if @file.closed?
close_array
@indent_level -= 1
write_new_line
@file.write("}", "\n")
@file.flush
@file.close
end
private
def to_json_str(obj)
json = JSON.pretty_generate(obj)
json.gsub(/^/, ' ' * (2 * @indent_level))
end
def write_indent
@file.write(" " * 2 * @indent_level)
end
def write_new_line
@file.write("\n")
end
def write_comma
@file.write(',')
end
def write_colon
@file.write(":")
end
def close_array
write_new_line
write_indent
@file.write("]")
@indent_level -= 1
end
end
end
|
