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service-instance.py
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service-instance.py
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#!/usr/bin/python
#
# Copyright (c) 2013 Juniper Networks, Inc. All rights reserved.
#
import os
import sys
import errno
import pprint
import subprocess
import time
import argparse
sys.path.insert(0, os.path.realpath('/usr/lib/python2.7/site-packages'))
sys.path.insert(
0,
os.path.realpath('/usr/lib/python2.7/site-packages/vnc_cfg_api_server/'))
from vnc_api.vnc_api import *
import vnc_cfg_api_server
from svc_monitor import svc_monitor
from novaclient import client as nc
from novaclient import exceptions as nc_exc
class ServiceInstanceCmd(object):
def __init__(self, args_str=None):
self._args = None
if not args_str:
args_str = ' '.join(sys.argv[1:])
self._parse_args(args_str)
self._proj_fq_name = [self._args.domain_name, self._args.proj_name]
self._si_fq_name = [self._args.domain_name,
self._args.proj_name,
self._args.instance_name]
self._st_fq_name = [self._args.domain_name, self._args.template_name]
self._domain_fq_name = [self._args.domain_name]
if self._args.left_vn:
self._left_vn_fq_name = [self._args.domain_name,
self._args.proj_name,
self._args.left_vn]
if self._args.right_vn:
self._right_vn_fq_name = [self._args.domain_name,
self._args.proj_name,
self._args.right_vn]
if self._args.mgmt_vn:
self._mgmt_vn_fq_name = [self._args.domain_name,
self._args.proj_name,
self._args.mgmt_vn]
self._novaclient_init()
self._vnc_lib = VncApi('u', 'p',
api_server_host=self._args.api_server_ip,
api_server_port=self._args.api_server_port)
# end __init__
def _parse_args(self, args_str):
# Source any specified config/ini file
# Turn off help, so we print all options in response to -h
conf_parser = argparse.ArgumentParser(add_help=False)
conf_parser.add_argument("-c", "--conf_file",
help="Specify config file", metavar="FILE")
args, remaining_argv = conf_parser.parse_known_args(args_str.split())
global_defaults = {
'domain_name': 'default-domain',
'template_name': None,
'instance_name': None,
'proj_name': 'demo',
'mgmt_vn': None,
'left_vn': None,
'right_vn': None,
'api_server_ip': '127.0.0.1',
'api_server_port': '8082',
}
if not args.conf_file:
args.conf_file = '/etc/contrail/contrail-svc-monitor.conf'
config = ConfigParser.SafeConfigParser()
ret = config.read([args.conf_file])
if args.conf_file not in ret:
print "Error: Unable to read the config file %s" % args.conf_file
sys.exit(-1)
global_defaults.update(dict(config.items("DEFAULTS")))
# Override with CLI options
# Don't surpress add_help here so it will handle -h
parser = argparse.ArgumentParser(
# Inherit options from config_parser
parents=[conf_parser],
# print script description with -h/--help
description=__doc__,
# Don't mess with format of description
formatter_class=argparse.RawDescriptionHelpFormatter,
)
parser.set_defaults(**global_defaults)
subparsers = parser.add_subparsers()
create_parser = subparsers.add_parser('add')
create_parser.add_argument(
"instance_name", help="service instance name")
create_parser.add_argument(
"template_name", help="service template name")
create_parser.add_argument(
"--proj_name", help="name of project [default: demo]")
create_parser.add_argument(
"--mgmt_vn", help="name of management vn [default: none]")
create_parser.add_argument(
"--left_vn", help="name of left vn [default: none]")
create_parser.add_argument(
"--right_vn", help="name of right vn [default: none]")
create_parser.add_argument("--max_instances", type=int, default=1,
help="max instances to launch [default: 1]")
create_parser.add_argument(
"--auto_scale", action="store_true", default=False,
help="enable auto-scale from 1 to max_instances")
create_parser.set_defaults(func=self.create_si)
delete_parser = subparsers.add_parser('del')
delete_parser.add_argument(
"instance_name", help="service instance name")
delete_parser.add_argument(
"template_name", help="service instance name")
delete_parser.add_argument(
"--proj_name", help="name of project [default: demo]")
delete_parser.set_defaults(func=self.delete_si)
list_parser = subparsers.add_parser('list')
list_parser.set_defaults(func=self.list_si)
self._args = parser.parse_args(remaining_argv)
# end _parse_args
def _novaclient_init(self):
self._nova = nc.Client(
'2', username='admin',
project_id=self._args.proj_name, api_key='contrail123',
auth_url='http://' + self._args.ifmap_server_ip + ':5000/v2.0')
# end _novaclient_init
# create service instance
def create_si(self):
# get service template
try:
st_obj = self._vnc_lib.service_template_read(
fq_name=self._st_fq_name)
st_prop = st_obj.get_service_template_properties()
if st_prop is None:
print "Error: Service template %s properties not found"\
% (self._args.template_name)
return
except NoIdError:
print "Error: Service template %s not found"\
% (self._args.template_name)
return
if st_prop.get_image_name():
# check if image exists
try:
self._nova.images.find(name=st_prop.get_image_name())
except nc_exc.NotFound:
print "Error: Image %s not found" % (st_prop.get_image_name())
return
# check if passed VNs exist
if self._args.left_vn:
try:
self._vnc_lib.virtual_network_read(
fq_name=self._left_vn_fq_name)
except NoIdError:
print "Error: Left VN %s not found" % (self._left_vn_fq_name)
return
if self._args.right_vn:
try:
self._vnc_lib.virtual_network_read(
fq_name=self._right_vn_fq_name)
except NoIdError:
print "Error: Right VN %s not found" % (self._right_vn_fq_name)
return
if self._args.mgmt_vn:
try:
self._vnc_lib.virtual_network_read(
fq_name=self._mgmt_vn_fq_name)
except NoIdError:
print "Error: Management VN %s not found" % (self._mgmt_vn_fq_name)
return
else:
self._mgmt_vn_fq_name = []
# create si
print "Creating service instance %s" % (self._args.instance_name)
project = self._vnc_lib.project_read(fq_name=self._proj_fq_name)
try:
si_obj = self._vnc_lib.service_instance_read(
fq_name=self._si_fq_name)
si_uuid = si_obj.uuid
except NoIdError:
si_obj = ServiceInstance(
self._args.instance_name, parent_obj=project)
si_uuid = self._vnc_lib.service_instance_create(si_obj)
si_prop = ServiceInstanceType(
left_virtual_network=':'.join(self._left_vn_fq_name),
management_virtual_network=':'.join(self._mgmt_vn_fq_name),
right_virtual_network=':'.join(self._right_vn_fq_name))
# set scale out
scale_out = ServiceScaleOutType(
max_instances=self._args.max_instances,
auto_scale=self._args.auto_scale)
si_prop.set_scale_out(scale_out)
si_obj.set_service_instance_properties(si_prop)
st_obj = self._vnc_lib.service_template_read(id=st_obj.uuid)
si_obj.set_service_template(st_obj)
self._vnc_lib.service_instance_update(si_obj)
return si_uuid
# end create_si
def delete_si(self):
try:
print "Deleting service instance %s" % (self._args.instance_name)
self._vnc_lib.service_instance_delete(fq_name=self._si_fq_name)
except NoIdError:
return
# delete_si
def list_si(self):
print "List service instances"
instances = self._vnc_lib.service_instances_list()
pprint.pprint(instances)
# list_si
# end class ServiceInstanceCmd
def main(args_str=None):
si = ServiceInstanceCmd(args_str)
si._args.func()
# end main
if __name__ == "__main__":
main()