TAPSET::JSON(3stap) TAPSET::JSON(3stap)

NAME
       tapset::json - systemtap json tapset


DESCRIPTION
        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.



       jsonsetprefix
              Set the metric prefix.

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

       jsonaddnumericmetric
              Add a numeric metric

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

       jsonaddstringmetric
              Add a string metric

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

       jsonaddarray
              Add an array

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

       jsonaddarraynumericmetric
              Add a numeric metric to an array

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

       jsonaddarraystringmetric
              Add a string metric to an array

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

       jsondata
              Fires whenever JSON data is wanted by a reader.

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

       @jsonoutputdatastart
              Start the json output.

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

       @jsonoutputstringvalue
              Output a string value.

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

       @jsonoutputnumericvalue
              Output a numeric value.

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

       @jsonoutputarraystringvalue
              Output a string value for metric in an array.

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

       @jsonoutputarraynumericvalue
              Output a numeric value for metric in an array.

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

       @jsonoutputdataend
              End the json output.

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


SEE ALSO
                       function::jsonsetprefix(3stap),
       function::jsonaddnumericmetric(3stap),
       function::jsonaddstringmetric(3stap),
       function::jsonaddarray(3stap),
       function::jsonaddarraynumericmetric(3stap),
       function::jsonaddarraystringmetric(3stap),
       probe::jsondata(3stap),  macro::jsonoutputdatastart(3stap),
       macro::jsonoutputstringvalue(3stap),
       macro::jsonoutputnumericvalue(3stap),
       macro::jsonoutputarraystringvalue(3stap),
       macro::jsonoutputarraynumericvalue(3stap),
       macro::jsonoutputdataend(3stap),  stap(1), stapprobes(3stap)



SystemTap Tapset Reference         June 2018               TAPSET::JSON(3stap)