tapset::json3stap

Overview

The JSON tapset provides probes, functions, and macros to generate
a JSON metadata and data file. The JSON metadata file is located in
/proc/systemtap/MODULE/metadata.json. The JSON data file is located
in /proc/systemtap/MODULE/data.json. The JSON data file is updated
with current data every time the file is read.

json_set_prefix

Set the metric prefix.

See function::json_set_prefix(3stap)
for details.

json_add_numeric_metric

Add a numeric metric

See function::json_add_numeric_metric(3stap)
for details.

json_add_string_metric

Add a string metric

See function::json_add_string_metric(3stap)
for details.

json_add_array

Add an array

See function::json_add_array(3stap)
for details.

json_add_array_numeric_metric

Add a numeric metric to an array

See function::json_add_array_numeric_metric(3stap)
for details.

json_add_array_string_metric

Add a string metric to an array

See function::json_add_array_string_metric(3stap)
for details.

json_data

Fires whenever JSON data is wanted by a reader.

See probe::json_data(3stap)
for details.

@json_output_data_start

Start the json output.

See macro::json_output_data_start(3stap)
for details.

@json_output_string_value

Output a string value.

See macro::json_output_string_value(3stap)
for details.

@json_output_numeric_value

Output a numeric value.

See macro::json_output_numeric_value(3stap)
for details.

@json_output_array_string_value

Output a string value for metric in an array.

See macro::json_output_array_string_value(3stap)
for details.

@json_output_array_numeric_value

Output a numeric value for metric in an array.

See macro::json_output_array_numeric_value(3stap)
for details.

@json_output_data_end

End the json output.

See macro::json_output_data_end(3stap)
for details.