blob: 20c234134c5b07ade0aef3e42ab6839b4f8188a3 [file] [log] [blame]
import os
import base64
import string
import sys
import socket
from sets import Set
if __name__ == '__main__':
sys.path.append("/opt/xos")
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "xos.settings")
from xos.config import Config
from core.models import Service
from requestrouter.models import RequestRouterService, ServiceMap
from util.logger import Logger, logging
import rrlib_config
logger = Logger(level=logging.INFO)
'''
Conventions:
1) All dnsredir backend will listen at port 9000+ servicemap.pk ( where pk is the primary key generated in django model)
'''
class RequestRouterLibrary:
def __init__(self):
pass
def gen_slice_info(self, service=None):
"""generates sliver information from slice of request router
"""
if (service is None ):
service = RequestRouterService.objects.get()
mapping = {}
#static mapping for demo purpose
#mapping["node47.princeton.vicci.org"] = "128.112.171.112"
mapping["node48.princeton.vicci.org"] = "128.112.171.114"
'''for slice in service.service.all():
name = slice.name
for sliver in slice.slivers.all():
mapping[sliver.name] = str(sliver.ip)
'''
return mapping
def gen_servicemap_slice_info(self, servicemap):
"""generates sliver information from slice of servicemap
"""
wzone = Set(['arizona', 'stanford', 'on.lab', 'housten']) # zone=1 in cooden.conf
ezone = Set(['princeton', 'atlanta', 'new york', 'georgia tech']) # zone=2 in coodeen.conf
mapping_zone = {}
mapping_ip = {}
slice = servicemap.slice
name = slice.name
for sliver in slice.slivers.all():
mapping_ip[sliver.node.name] = socket.gethostbyname(sliver.node.name)
#print "sliver name "+sliver.name+str(sliver.ip)+"\n"
site = sliver.node.site.name
if(site.lower() in wzone):
mapping_zone[sliver.node.name] = str(1)
else:
mapping_zone[sliver.node.name] = str(2)
return mapping_ip, mapping_zone
def gen_slice_file(self, service):
""" generates host file for the slice information
to be used by ansible to push configuration files
"""
mapping = self.gen_slice_info(service)
fn = "/etc/ansible/requestrouter/dnsredir/hosts"
f = open(fn, "w")
for (k,v) in mapping.items():
f.write("%s\n" % k)
fn = "/etc/ansible/requestrouter/dnsdemux/hosts"
f = open(fn, "w")
for (k,v) in mapping.items():
f.write("%s\n" % k)
def get_servicemap_uid(self, servicemap):
seq = ("service_", str(servicemap.pk));
return "".join(seq)
def get_service_port(self, servicemap):
return str(9000+servicemap.pk)
def gen_dnsredir_serviceconf(self, servicemap):
objname = self.get_servicemap_uid(servicemap)
rr_mapping = self.gen_slice_info(None)
#generate dnsredir.conf file parameters to be used in static file.
mapping = {}
mapping["port_listen"] = self.get_service_port(servicemap)
mapping["configdir"] = rrlib_config.DNSREDIR_CONFIGDIR_PREFIX+objname+".d/"
mapping["logdir"] = rrlib_config.DNSREDIR_LOGDIR_PREFIX+objname+".d"
mapping["pidfile"] = rrlib_config.DNSREDIR_PIDFILE_PREFIX+objname+".pid"
mapping["domain_name"] = servicemap.prefix
mapping["heartbeat_port"] = rrlib_config.HEARTBEAT_PORT
#generate dnsredir.conf file
fn = "./temp_config/dnsredir/"+objname+".conf"
f = open(fn, "w")
for (k,v) in rr_mapping.items():
f.write(mapping["domain_name"]+". NS "+k+". "+v+" 3600 \n" % mapping)
f.write("""
Default_TTL 30
Port %(port_listen)s
ConfigDir %(configdir)s
MapsDir maps.d
HTTPPort %(heartbeat_port)d
PidFile %(pidfile)s
HttpRequestPort 8081
""" % mapping)
#generate configdirectory
os.mkdir("./temp_config/dnsredir/"+objname+".d")
#geenrate codeen_nodes.conf
mapping_ip, mapping_zone = self.gen_servicemap_slice_info(servicemap)
codeen_name = "./temp_config/dnsredir/"+objname+".d/codeen_nodes.conf"
f = open(codeen_name, "w")
for (k,v) in mapping_zone.items():
f.write(k+" zone="+v+" \n")
iptxt = "./temp_config/dnsredir/"+objname+".d/node-to-ip.txt"
f = open(iptxt, "w")
for (k,v) in mapping_ip.items():
f.write(k+" "+v+" \n")
#generate maps directory
os.mkdir("./temp_config/dnsredir/"+objname+".d/maps.d")
# redirection map
map = "./temp_config/dnsredir/"+objname+".d/maps.d/map.conf"
f = open(map, "w")
#hardcoded probable public IP masks from arizona and princeton region respectively
f.write("prefix "+servicemap.prefix+" \n")
f.write("map 150.135.211.252/32 zone 1 || zone 2 \n")
f.write("map 128.112.171.112/24 zone 2 || zone 1 \n")
f.write("map 0.0.0.0/0 zone 1 || zone 2 \n")
def gen_dnsdemux_serviceconf(self, servicemap):
'''
generates frontend service*.conf file for each of the service
It assumes that there is a dnsdemux frontend running on the RR istallation and will
just add a conf file for each service in /etc/dnsdemux/default
'''
objname = self.get_servicemap_uid(servicemap)
#generate dnsdemux.conf file parameters to be used in static file.
port_listen = self.get_service_port(servicemap)
domain_name = servicemap.prefix
#generate service specific .conf file
rr_mapping = self.gen_slice_info(None)
fn = "./temp_config/dnsdemux/"+objname+".conf"
f = open(fn, "w")
for (k,v) in rr_mapping.items():
f.write("Forward "+v+" "+port_listen+" 8081 "+domain_name+".\n")
def teardown_temp_configfiles(self, objname):
if os.path.exists("./temp_config/dnsdemux/"+objname+".conf"):
os.remove("./temp_config/dnsdemux/"+objname+".conf")
if os.path.exists("./temp_config/dnsredir/"+objname+".d/maps.d/map.conf"):
os.remove("./temp_config/dnsredir/"+objname+".d/maps.d/map.conf")
if os.path.exists("./temp_config/dnsredir/"+objname+".d/maps.d"):
os.rmdir("./temp_config/dnsredir/"+objname+".d/maps.d")
if os.path.exists("./temp_config/dnsredir/"+objname+".d/node-to-ip.txt"):
os.remove("./temp_config/dnsredir/"+objname+".d/node-to-ip.txt")
if os.path.exists("./temp_config/dnsredir/"+objname+".d/codeen_nodes.conf"):
os.remove("./temp_config/dnsredir/"+objname+".d/codeen_nodes.conf")
if os.path.exists("./temp_config/dnsredir/"+objname+".d"):
os.rmdir("./temp_config/dnsredir/"+objname+".d")
if os.path.exists("./temp_config/dnsredir/"+objname+".conf"):
os.remove("./temp_config/dnsredir/"+objname+".conf")