#! /usr/bin/python
import os
import re
import time
import cgitb; cgitb.enable()
hosts = [ 'plus','minus' ]
urls = { 'plus' : 'http://ftp.arl.army.mil/ftp/historic-computers/gif/eniac1.gif',
'minus' : 'http://ftp.arl.army.mil/ftp/historic-computers/gif/eniac2.gif',
'red' : 'http://ftp.arl.army.mil/ftp/historic-computers/gif/eniac3.gif',
'blue' : 'http://ftp.arl.army.mil/ftp/historic-computers/gif/eniac4.gif' }
domain = 'seas.upenn.edu'
fields = ('Server', 'Arch', 'OS', 'Up', 'Users', 'Load', 'Mem', 'Free')
def htmlrow(fields, tag = 'td'):
return ''.join([''] + ['<' + tag + '>' + field + '' for field in fields] + ['
'])
def row(dict, missing = None):
return tuple([dict.get(fields[i], missing) for i in range(len(fields))])
def addurl(server):
if urls.has_key(server):
return '%s' % (urls[server], server)
else:
return server
class Uptime:
uptpat = re.compile(r".*up\s+(?P.*),\s+(?P\d+)\s+user.*average:\s*(?P\d+\.\d+).*")
mempat = re.compile(r"\D+(?P\d+)\s+\d+\s+(?P\d+).*")
def __init__(self, hosts, domain):
self.servers = [ (host, domain) for host in hosts ]
def probe(self, server):
dict = {'Server': addurl(server[0])}
try:
pipe = os.popen('ssh %s.%s arch' % server)
dict['Arch'] = pipe.read()
pipe.close()
pipe = os.popen('ssh %s.%s uname' % server)
dict['OS'] = pipe.read()
pipe.close()
pipe = os.popen('ssh %s.%s uptime' % server)
dict.update(self.uptpat.match(pipe.read()).groupdict())
pipe.close()
pipe = os.popen('ssh %s.%s free -m' % server)
pipe.readline()
dict.update(self.mempat.match(pipe.readline()).groupdict())
pipe.close()
return row(dict)
except Exception:
return row(dict, '-')
def refresh(self):
self.reports = [ self.probe(server) for server in self.servers ]
def html(self):
return '\n'.join(['\n'] + [htmlrow(fields, 'th')] + \
[htmlrow(report) for report in self.reports] + \
['
'])
def __str__(self):
return '\n'.join(['%s:\n%s\n' % report for report in self.reports ])
if __name__ == '__main__':
uptime = Uptime(hosts, domain)
uptime.refresh()
print 'Server status report'
print 'Server status at %s
' % time.asctime()
print uptime.html()
print ''