django-orchestra/orchestra/contrib/saas/backends/__init__.py

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import pkgutil
import textwrap
from orchestra.contrib.resources import ServiceMonitor
from .. import settings
class SaaSWebTraffic(ServiceMonitor):
"""
Parses apache logs,
looking for the size of each request on the last word of the log line.
Compatible log format:
<tt>LogFormat "%h %l %u %t \"%r\" %>s %O \"%{Host}i\"" host</tt>
<tt>CustomLog /home/pangea/logs/apache/host_blog.pangea.org.log host</tt>
"""
model = 'saas.SaaS'
script_executable = '/usr/bin/python'
monthly_sum_old_values = True
abstract = True
def prepare(self):
access_log = self.log_path
context = {
'access_logs': str((access_log, access_log+'.1')),
'current_date': self.current_date.strftime("%Y-%m-%d %H:%M:%S %Z"),
'ignore_hosts': str(settings.SAAS_TRAFFIC_IGNORE_HOSTS),
}
self.append(textwrap.dedent("""\
import sys
from datetime import datetime
from dateutil import tz
def to_local_timezone(date, tzlocal=tz.tzlocal()):
date = datetime.strptime(date, '%Y-%m-%d %H:%M:%S %Z')
date = date.replace(tzinfo=tz.tzutc())
date = date.astimezone(tzlocal)
return date
# Use local timezone
end_date = to_local_timezone('{current_date}')
end_date = int(end_date.strftime('%Y%m%d%H%M%S'))
access_logs = {access_logs}
sites = {{}}
months = {{
'Jan': '01',
'Feb': '02',
'Mar': '03',
'Apr': '04',
'May': '05',
'Jun': '06',
'Jul': '07',
'Aug': '08',
'Sep': '09',
'Oct': '10',
'Nov': '11',
'Dec': '12',
}}
def prepare(object_id, site_domain, ini_date):
global sites
ini_date = to_local_timezone(ini_date)
ini_date = int(ini_date.strftime('%Y%m%d%H%M%S'))
sites[site_domain] = [ini_date, object_id, 0]
def monitor(sites, end_date, months, access_logs):
for access_log in access_logs:
try:
with open(access_log, 'r') as handler:
for line in handler.readlines():
2015-09-18 11:29:52 +00:00
line = line.split()
2015-09-20 10:57:13 +00:00
host, __, __, date = line[:4]
if host in {ignore_hosts}:
continue
2015-09-20 10:57:13 +00:00
size, hostname = line[-2:]
hostname = hostname.replace('"', '')
try:
site = sites[hostname]
except KeyError:
continue
else:
2015-09-18 11:29:52 +00:00
# [16/Sep/2015:11:40:38
day, month, date = date[1:].split('/')
year, hour, min, sec = date.split(':')
date = year + months[month] + day + hour + min + sec
if site[0] < int(date) < end_date:
status, size = response.split()
site[2] += int(size)
except IOError as e:
sys.stderr.write(str(e)+'\\n')
for opts in sites.values():
ini_date, object_id, size = opts
print object_id, size
""").format(**context)
)
def monitor(self, saas):
context = self.get_context(saas)
self.append("prepare(%(object_id)s, '%(site_domain)s', '%(last_date)s')" % context)
def commit(self):
self.append('monitor(sites, end_date, months, access_logs)')
def get_context(self, saas):
return {
'site_domain': saas.get_site_domain(),
'last_date': self.get_last_date(saas.pk).strftime("%Y-%m-%d %H:%M:%S %Z"),
'object_id': saas.pk,
}
for __, module_name, __ in pkgutil.walk_packages(__path__):
# sorry for the exec(), but Import module function fails :(
exec('from . import %s' % module_name)