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# Copyright (C) 2016 Canonical Ltd.
#
# Author: Ryan Harper <ryan.harper@canonical.com>
#
# This file is part of cloud-init. See LICENSE file for license information.
import base64
import datetime
import json
import os
from cloudinit import util
# An event:
'''
{
"description": "executing late commands",
"event_type": "start",
"level": "INFO",
"name": "cmd-install/stage-late"
"origin": "cloudinit",
"timestamp": 1461164249.1590767,
},
{
"description": "executing late commands",
"event_type": "finish",
"level": "INFO",
"name": "cmd-install/stage-late",
"origin": "cloudinit",
"result": "SUCCESS",
"timestamp": 1461164249.1590767
}
'''
format_key = {
'%d': 'delta',
'%D': 'description',
'%E': 'elapsed',
'%e': 'event_type',
'%I': 'indent',
'%l': 'level',
'%n': 'name',
'%o': 'origin',
'%r': 'result',
'%t': 'timestamp',
'%T': 'total_time',
}
formatting_help = " ".join(["{0}: {1}".format(k.replace('%', '%%'), v)
for k, v in format_key.items()])
def format_record(msg, event):
for i, j in format_key.items():
if i in msg:
# ensure consistent formatting of time values
if j in ['delta', 'elapsed', 'timestamp']:
msg = msg.replace(i, "{%s:08.5f}" % j)
else:
msg = msg.replace(i, "{%s}" % j)
return msg.format(**event)
def dump_event_files(event):
content = dict((k, v) for k, v in event.items() if k not in ['content'])
files = content['files']
saved = []
for f in files:
fname = f['path']
fn_local = os.path.basename(fname)
fcontent = base64.b64decode(f['content']).decode('ascii')
util.write_file(fn_local, fcontent)
saved.append(fn_local)
return saved
def event_name(event):
if event:
return event.get('name')
return None
def event_type(event):
if event:
return event.get('event_type')
return None
def event_parent(event):
if event:
return event_name(event).split("/")[0]
return None
def event_timestamp(event):
return float(event.get('timestamp'))
def event_datetime(event):
return datetime.datetime.utcfromtimestamp(event_timestamp(event))
def delta_seconds(t1, t2):
return (t2 - t1).total_seconds()
def event_duration(start, finish):
return delta_seconds(event_datetime(start), event_datetime(finish))
def event_record(start_time, start, finish):
record = finish.copy()
record.update({
'delta': event_duration(start, finish),
'elapsed': delta_seconds(start_time, event_datetime(start)),
'indent': '|' + ' ' * (event_name(start).count('/') - 1) + '`->',
})
return record
def total_time_record(total_time):
return 'Total Time: %3.5f seconds\n' % total_time
def generate_records(events, blame_sort=False,
print_format="(%n) %d seconds in %I%D",
dump_files=False, log_datafiles=False):
sorted_events = sorted(events, key=lambda x: x['timestamp'])
records = []
start_time = None
total_time = 0.0
stage_start_time = {}
stages_seen = []
boot_records = []
unprocessed = []
for e in range(0, len(sorted_events)):
event = events[e]
try:
next_evt = events[e + 1]
except IndexError:
next_evt = None
if event_type(event) == 'start':
if event.get('name') in stages_seen:
records.append(total_time_record(total_time))
boot_records.append(records)
records = []
start_time = None
total_time = 0.0
if start_time is None:
stages_seen = []
start_time = event_datetime(event)
stage_start_time[event_parent(event)] = start_time
# see if we have a pair
if event_name(event) == event_name(next_evt):
if event_type(next_evt) == 'finish':
records.append(format_record(print_format,
event_record(start_time,
event,
next_evt)))
else:
# This is a parent event
records.append("Starting stage: %s" % event.get('name'))
unprocessed.append(event)
stages_seen.append(event.get('name'))
continue
else:
prev_evt = unprocessed.pop()
if event_name(event) == event_name(prev_evt):
record = event_record(start_time, prev_evt, event)
records.append(format_record("Finished stage: "
"(%n) %d seconds ",
record) + "\n")
total_time += record.get('delta')
else:
# not a match, put it back
unprocessed.append(prev_evt)
records.append(total_time_record(total_time))
boot_records.append(records)
return boot_records
def show_events(events, print_format):
return generate_records(events, print_format=print_format)
def load_events(infile, rawdata=None):
if rawdata:
data = rawdata.read()
else:
data = infile.read()
j = None
try:
j = json.loads(data)
except ValueError:
pass
return j, data
|
