1TAPSET::JSON(3stap)                                        TAPSET::JSON(3stap)
2
3
4

NAME

6       tapset::json - systemtap json tapset
7
8

DESCRIPTION

10        The JSON tapset provides probes, functions, and macros to generate
11        a JSON metadata and data file. The JSON metadata file is located in
12        /proc/systemtap/MODULE/metadata.json. The JSON data file is located
13        in /proc/systemtap/MODULE/data.json. The JSON data file is updated
14        with current data every time the file is read.
15
16
17
18       json_set_prefix
19              Set the metric prefix.
20
21              See function::json_set_prefix(3stap)
22               for details.
23
24       json_add_numeric_metric
25              Add a numeric metric
26
27              See function::json_add_numeric_metric(3stap)
28               for details.
29
30       json_add_string_metric
31              Add a string metric
32
33              See function::json_add_string_metric(3stap)
34               for details.
35
36       json_add_array
37              Add an array
38
39              See function::json_add_array(3stap)
40               for details.
41
42       json_add_array_numeric_metric
43              Add a numeric metric to an array
44
45              See function::json_add_array_numeric_metric(3stap)
46               for details.
47
48       json_add_array_string_metric
49              Add a string metric to an array
50
51              See function::json_add_array_string_metric(3stap)
52               for details.
53
54       json_data
55              Fires whenever JSON data is wanted by a reader.
56
57               See probe::json_data(3stap)
58               for details.
59
60       @json_output_data_start
61              Start the json output.
62
63               See macro::json_output_data_start(3stap)
64               for details.
65
66       @json_output_string_value
67              Output a string value.
68
69               See macro::json_output_string_value(3stap)
70               for details.
71
72       @json_output_numeric_value
73              Output a numeric value.
74
75               See macro::json_output_numeric_value(3stap)
76               for details.
77
78       @json_output_array_string_value
79              Output a string value for metric in an array.
80
81               See macro::json_output_array_string_value(3stap)
82               for details.
83
84       @json_output_array_numeric_value
85              Output a numeric value for metric in an array.
86
87               See macro::json_output_array_numeric_value(3stap)
88               for details.
89
90       @json_output_data_end
91              End the json output.
92
93               See macro::json_output_data_end(3stap)
94               for details.
95
96

SEE ALSO

98                       function::json_set_prefix(3stap),
99       function::json_add_numeric_metric(3stap),
100       function::json_add_string_metric(3stap),
101       function::json_add_array(3stap),
102       function::json_add_array_numeric_metric(3stap),
103       function::json_add_array_string_metric(3stap),
104       probe::json_data(3stap),  macro::json_output_data_start(3stap),
105       macro::json_output_string_value(3stap),
106       macro::json_output_numeric_value(3stap),
107       macro::json_output_array_string_value(3stap),
108       macro::json_output_array_numeric_value(3stap),
109       macro::json_output_data_end(3stap),  stap(1), stapprobes(3stap)
110
111
112
113SystemTap Tapset Reference       November 2019             TAPSET::JSON(3stap)