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jc.parsers.iostat_s

jc - JSON CLI output utility iostat command output streaming parser

This streaming parser outputs JSON Lines

Note: iostat version 11 and higher include a JSON output option

Usage (cli):

$ iostat | jc --iostat-s

Usage (module):

import jc
# result is an iterable object (generator)
result = jc.parse('iostat_s', iostat_command_output.splitlines())
for item in result:
    # do something

or

import jc.parsers.iostat_s
# result is an iterable object (generator)
result = jc.parsers.iostat_s.parse(iostat_command_output.splitlines())
for item in result:
    # do something

Schema:

{
  "type":             string,
  "percent_user":     float,
  "percent_nice":     float,
  "percent_system":   float,
  "percent_iowait":   float,
  "percent_steal":    float,
  "percent_idle":     float,
  "device":           string,
  "tps":              float,
  "kb_read_s":        float,
  "mb_read_s":        float,
  "kb_wrtn_s":        float,
  "mb_wrtn_s":        float,
  "kb_read":          integer,
  "mb_read":          integer,
  "kb_wrtn":          integer,
  "mb_wrtn":          integer,
  'kb_dscd':          integer,
  'mb_dscd':          integer,
  "rrqm_s":           float,
  "wrqm_s":           float,
  "r_s":              float,
  "w_s":              float,
  "rmb_s":            float,
  "rkb_s":            float,
  "wmb_s":            float,
  "wkb_s":            float,
  "avgrq_sz":         float,
  "avgqu_sz":         float,
  "await":            float,
  "r_await":          float,
  "w_await":          float,
  "svctm":            float,
  "aqu_sz":           float,
  "rareq_sz":         float,
  "wareq_sz":         float,
  "d_s":              float,
  "dkb_s":            float,
  "dmb_s":            float,
  "drqm_s":           float,
  "percent_drqm":     float,
  "d_await":          float,
  "dareq_sz":         float,
  "f_s":              float,
  "f_await":          float,
  "kb_dscd_s":        float,
  "mb_dscd_s":        float,
  "percent_util":     float,
  "percent_rrqm":     float,
  "percent_wrqm":     float,

  # Below object only exists if using -qq or ignore_exceptions=True

  "_jc_meta":
    {
      "success":      boolean,     # false if error parsing
      "error":        string,      # exists if "success" is false
      "line":         string       # exists if "success" is false
    }
}

Examples:

$ iostat | jc --iostat-s
{"percent_user":0.14,"percent_nice":0.0,"percent_system":0.16,...}
{"device":"sda","tps":0.24,"kb_read_s":5.28,"kb_wrtn_s":1.1...}
...

$ iostat | jc --iostat-s -r
{"percent_user":"0.14","percent_nice":"0.00","percent_system":"0.16"...}
{"device":"sda","tps":"0.24","kb_read_s":"5.28","kb_wrtn_s":"1.10"...}
...

info

info()

Provides parser metadata (version, author, etc.)

parse

parse(data, raw=False, quiet=False, ignore_exceptions=False)

Main text parsing generator function. Returns an iterator object.

Parameters:

data:              (iterable)  line-based text data to parse
                               (e.g. sys.stdin or str.splitlines())

raw:               (boolean)   unprocessed output if True
quiet:             (boolean)   suppress warning messages if True
ignore_exceptions: (boolean)   ignore parsing exceptions if True

Yields:

Dictionary. Raw or processed structured data.

Returns:

Iterator object

Parser Information

Compatibility: linux

Version 1.0 by Kelly Brazil (kellyjonbrazil@gmail.com)