def check_filesync_servers():
if 'runserver' in sys.argv:
# This may be run by multiple threads
# but its ok tho tho b/c this threads
# purpose is just to check
# whether servers are alive or not.
# Basically its idempotent.
# Checking health of known servers
# in efforts to clean up old entries
for host in Host.objects.all():
time.sleep(1)
print 'checking %s' % host
method = 'ruok'
url = '/'.join(['http:/',host.hostname,method])
print url
try:
print urllib.urlopen(url).read()
except IOError:
print 'Got IOError when checking %s, will delete' % host.hostname
# so lets consider him dead
try:
Host.objects.filter(hostname=host.hostname).get().delete()
except Host.DoesNotExist:
# Hes already been removed, no biggie
pass
# XXX Causes *lots* of chatter but seems to work...
# Change of host list so lets send out an update
#print 'timer ticked, and we removed a host, lets update group'
fns_utils.announce_hostlist()
# And play it again sam...
t = threading.Timer(30, check_filesync_servers).start()
def addhost(request, hn):
str_out = 'Adding host %s ' % hn
# We dont want duplicate entries in our db
# so make this function idempotent for add's
if len(Host.objects.filter(hostname=hn)) < 1:
print 'adding new host %s ' % hn
Host(hostname=hn).save()
else:
print 'Already know about host %s, wont add' % hn
# Announce updated list
#print 'adding host lets update group'
fns_utils.announce_hostlist()
return HttpResponse(str_out, mimetype="text/plain")