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Code Issues Releases Activity

add processing logic

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Kelly Brazil
2021-09-22 14:06:51 -07:00
parent 4e3b471f18
commit f266acbcca
1 changed files with 104 additions and 12 deletions
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116
jc/parsers/vmstat.py
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@ -1,6 +1,6 @@
"""jc - JSON CLI output utility `vmstat` command output parser
<<Short vmstat description and caveats>>
Options supported: `-a`, `-w`, `-d`, `-t`
Usage (cli):
@ -19,19 +19,98 @@ Schema:
[
{
"vmstat": string,
"bar": boolean,
"baz": integer
'runnable_procs': integer,
'uninterruptible_sleeping_procs': integer,
'virtual_mem_used': integer,
'free_mem': integer,
'buffer_mem': integer,
'cache_mem': integer,
'inactive_mem': integer,
'active_mem': integer,
'swap_in': integer,
'swap_out': integer,
'blocks_in': integer,
'blocks_out': integer,
'interrupts': integer,
'context_switches': integer,
'user_time': integer,
'system_time': integer,
'idle_time': integer,
'io_wait_time': integer,
'stolen_time': integer,
'disk': string,
'total_reads': integer,
'merged_reads': integer,
'sectors_read': integer,
'reading_ms': integer,
'total_writes': integer,
'merged_writes': integer,
'sectors_written': integer,
'writing_ms': integer,
'current_io': integer,
'io_seconds': integer,
'timestamp': string,
'timezone': string,
'epoch': integer, # naive timestamp if -t flag is used
'epoch_utc': integer # aware timestamp if -t flag is used and UTC TZ
}
]
Examples:
$ vmstat | jc --vmstat -p
[]
[
{
"runnable_procs": 2,
"uninterruptible_sleeping_procs": 0,
"virtual_mem_used": 0,
"free_mem": 2794468,
"buffer_mem": 2108,
"cache_mem": 741208,
"inactive_mem": null,
"active_mem": null,
"swap_in": 0,
"swap_out": 0,
"blocks_in": 1,
"blocks_out": 3,
"interrupts": 29,
"context_switches": 57,
"user_time": 0,
"system_time": 0,
"idle_time": 99,
"io_wait_time": 0,
"stolen_time": 0,
"timestamp": null,
"timezone": null
}
]
$ vmstat | jc --vmstat -p -r
[]
[
{
"runnable_procs": "2",
"uninterruptible_sleeping_procs": "0",
"virtual_mem_used": "0",
"free_mem": "2794468",
"buffer_mem": "2108",
"cache_mem": "741208",
"inactive_mem": null,
"active_mem": null,
"swap_in": "0",
"swap_out": "0",
"blocks_in": "1",
"blocks_out": "3",
"interrupts": "29",
"context_switches": "57",
"user_time": "0",
"system_time": "0",
"idle_time": "99",
"io_wait_time": "0",
"stolen_time": "0",
"timestamp": null,
"timezone": null
}
]
"""
import jc.utils
@ -65,12 +144,23 @@ def _process(proc_data):
List of Dictionaries. Structured to conform to the schema.
"""
# process the data here
# rebuild output for added semantic information
# use helper functions in jc.utils for int, float, bool conversions and timestamps
int_list = ['runnable_procs', 'uninterruptible_sleeping_procs', 'virtual_mem_used', 'free_mem', 'buffer_mem',
'cache_mem', 'inactive_mem', 'active_mem', 'swap_in', 'swap_out', 'blocks_in', 'blocks_out',
'interrupts', 'context_switches', 'user_time', 'system_time', 'idle_time', 'io_wait_time',
'stolen_time', 'total_reads', 'merged_reads', 'sectors_read', 'reading_ms', 'total_writes',
'merged_writes', 'sectors_written', 'writing_ms', 'current_io', 'io_seconds']
# add epoch and epoch_utc when timestamp field is not null
for entry in proc_data:
for key in entry:
if key in int_list:
entry[key] = jc.utils.convert_to_int(entry[key])
if entry['timestamp']:
ts = jc.utils.timestamp(f'{entry["timestamp"]} {entry["timezone"]}')
print(ts)
entry['epoch'] = ts.naive
entry['epoch_utc'] = ts.utc
return proc_data
@ -154,7 +244,8 @@ def parse(data, raw=False, quiet=False):
'idle_time': line_list[14],
'io_wait_time': line_list[15],
'stolen_time': line_list[16],
'timestamp': line_list[17] if tstamp else None
'timestamp': line_list[17] if tstamp else None,
'timezone': tz or None
}
raw_output.append(output_line)
@ -174,7 +265,8 @@ def parse(data, raw=False, quiet=False):
'writing_ms': line_list[8],
'current_io': line_list[9],
'io_seconds': line_list[10],
'timestamp': line_list[11] if tstamp else None
'timestamp': line_list[11] if tstamp else None,
'timezone': tz or None
}
raw_output.append(output_line)