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#!/usr/bin/python
import urllib2
import time
import rfc822
class GardCheck:
# Base class which provides some helper functions
def __init__(self, url):
self.url = url
def check_file_exists(self, url):
ret = True
try:
f = urllib2.urlopen(url)
if len(f.read()) == 0:
raise IOError
except:
ret = False
return ret
# Takes the URL to a timestamp.{chk|x} file and returns the
# corresponding time stamp in seconds
def _get_timestamp_from_url(self, url):
try:
f = urllib2.urlopen(url)
date = f.read()
f.close()
if date is None or len(date) == 0:
raise ValueError
try:
# timestamp.chk format
ts = self.timestamp_to_secs(date)
except:
# timestamp.x format?
ts = float(date.split(' ')[0])
except:
return None
return ts
def get_lag(self, path, verbose=False):
ts = self._get_timestamp_from_url(self.url + path)
now = time.mktime(time.gmtime())
if ts is None or now < ts:
return None
return now - ts
def humanize_time(self, secs):
mins, secs = divmod(secs, 60)
hours, mins = divmod(mins, 60)
days, hours = divmod(hours, 24)
return '%02d d %02dh %02d m %02d s' % (days, hours, mins, secs)
def timestamp_to_secs(self, ts):
return rfc822.mktime_tz(rfc822.parsedate_tz(ts))
# Override these in child classes
def check(self):
return True
def lag(self):
return None
# Check distfiles mirrors
class DistfilesCheck(GardCheck):
def lag(self):
path = '/distfiles/timestamp.chk'
return self.get_lag(path)
def check(self, maxlag, verbose=False):
# XXX: Replace 'verbose' with a logger object
lag = self.lag()
if lag is None:
print 'ERROR: Could not get distfiles timestamp for ' + self.url
ret = False
elif lag > maxlag:
if verbose is True:
print 'ERROR: distfiles at %s is lagging\n\tdelta is %s' \
% (self.url, self.humanize_time(lag))
ret = False
else:
ret = True
return ret
# Check releases mirrors
class ReleasesCheck(GardCheck):
def lag(self):
path = '/releases/.test/timestamp.x'
return self.get_lag(path)
def check(self, maxlag, verbose=False):
# Verify that releases aren't lagging
lag = self.lag()
if lag is None:
print 'ERROR: Could not get releases timestamp for ' + self.url
ret = False
elif lag > maxlag:
if verbose is True:
print 'ERROR: releases at %s is lagging\n\tdelta is %s' \
% (self.url, self.humanize_time(lag))
ret = False
else:
ret = True
# Verify that releases/.test/THIS-FILE-SHOULD-NOT-BE-PUBLIC.txt
# is not world readable
if self.check_file_exists(self.url+'releases/.test/THIS-FILE-SHOULD-NOT-BE-PUBLIC.txt'):
if verbose is True:
print 'ERROR: THIS-FILE-SHOULD-NOT-BE-PUBLIC.txt is visible on %s' % self.url
ret = False
return ret
|
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