blob: 1d6149eeae03713fcc476b17a4c358d111cef76d [file] [log] [blame]
#!/usr/bin/env python
#
# Copyright 2016 the original author or authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
import argparse
import os
import yaml
from twisted.internet import reactor
from twisted.internet.defer import inlineCallbacks
from common.utils.dockerhelpers import get_my_containers_name
from common.utils.nethelpers import get_my_primary_local_ipv4
from common.utils.structlog_setup import setup_logging
from connection_mgr import ConnectionManager
defs = dict(
config=os.environ.get('CONFIG', './ofagent.yml'),
consul=os.environ.get('CONSUL', 'localhost:8500'),
controller=os.environ.get('CONTROLLER', 'localhost:6633'),
external_host_address=os.environ.get('EXTERNAL_HOST_ADDRESS',
get_my_primary_local_ipv4()),
grpc_endpoint=os.environ.get('GRPC_ENDPOINT', 'localhost:50055'),
fluentd=os.environ.get('FLUENTD', None),
instance_id=os.environ.get('INSTANCE_ID', os.environ.get('HOSTNAME', '1')),
internal_host_address=os.environ.get('INTERNAL_HOST_ADDRESS',
get_my_primary_local_ipv4()),
work_dir=os.environ.get('WORK_DIR', '/tmp/ofagent')
)
def parse_args():
parser = argparse.ArgumentParser()
_help = ('Path to ofagent.yml config file (default: %s). '
'If relative, it is relative to main.py of ofagent.'
% defs['config'])
parser.add_argument('-c', '--config',
dest='config',
action='store',
default=defs['config'],
help=_help)
_help = '<hostname>:<port> to consul agent (default: %s)' % defs['consul']
parser.add_argument(
'-C', '--consul', dest='consul', action='store',
default=defs['consul'],
help=_help)
_help = '<hostname>:<port> to openflow controller (default: %s)' % \
defs['controller']
parser.add_argument(
'-O', '--controller', dest='controller', action='store',
default=defs['controller'],
help=_help)
_help = ('<hostname> or <ip> at which ofagent is reachable from outside '
'the cluster (default: %s)' % defs['external_host_address'])
parser.add_argument('-E', '--external-host-address',
dest='external_host_address',
action='store',
default=defs['external_host_address'],
help=_help)
_help = ('<hostname>:<port> to fluentd server (default: %s). (If not '
'specified (None), the address from the config file is used'
% defs['fluentd'])
parser.add_argument('-F', '--fluentd',
dest='fluentd',
action='store',
default=defs['fluentd'],
help=_help)
_help = ('gRPC end-point to connect to. It can either be a direct'
'definition in the form of <hostname>:<port>, or it can be an'
'indirect definition in the form of @<service-name> where'
'<service-name> is the name of the grpc service as registered'
'in consul (example: @voltha-grpc). (default: %s'
% defs['grpc_endpoint'])
parser.add_argument('-G', '--grpc-endpoint',
dest='grpc_endpoint',
action='store',
default=defs['grpc_endpoint'],
help=_help)
_help = ('<hostname> or <ip> at which ofagent is reachable from inside'
'the cluster (default: %s)' % defs['internal_host_address'])
parser.add_argument('-H', '--internal-host-address',
dest='internal_host_address',
action='store',
default=defs['internal_host_address'],
help=_help)
_help = ('unique string id of this ofagent instance (default: %s)'
% defs['instance_id'])
parser.add_argument('-i', '--instance-id',
dest='instance_id',
action='store',
default=defs['instance_id'],
help=_help)
_help = 'omit startup banner log lines'
parser.add_argument('-n', '--no-banner',
dest='no_banner',
action='store_true',
default=False,
help=_help)
_help = "suppress debug and info logs"
parser.add_argument('-q', '--quiet',
dest='quiet',
action='count',
help=_help)
_help = 'enable verbose logging'
parser.add_argument('-v', '--verbose',
dest='verbose',
action='count',
help=_help)
_help = ('work dir to compile and assemble generated files (default=%s)'
% defs['work_dir'])
parser.add_argument('-w', '--work-dir',
dest='work_dir',
action='store',
default=defs['work_dir'],
help=_help)
_help = ('use docker container name as ofagent instance id'
' (overrides -i/--instance-id option)')
parser.add_argument('--instance-id-is-container-name',
dest='instance_id_is_container_name',
action='store_true',
default=False,
help=_help)
args = parser.parse_args()
# post-processing
if args.instance_id_is_container_name:
args.instance_id = get_my_containers_name()
return args
def load_config(args):
path = args.config
if path.startswith('.'):
dir = os.path.dirname(os.path.abspath(__file__))
path = os.path.join(dir, path)
path = os.path.abspath(path)
with open(path) as fd:
config = yaml.load(fd)
return config
banner = r'''
___ _____ _ _
/ _ \| ___/ \ __ _ ___ _ __ | |_
| | | | |_ / _ \ / _` |/ _ \ '_ \| __|
| |_| | _/ ___ \ (_| | __/ | | | |_
\___/|_|/_/ \_\__, |\___|_| |_|\__|
|___/
'''
def print_banner(log):
for line in banner.strip('\n').splitlines():
log.info(line)
log.info('(to stop: press Ctrl-C)')
class Main(object):
def __init__(self):
self.args = args = parse_args()
self.config = load_config(args)
verbosity_adjust = (args.verbose or 0) - (args.quiet or 0)
self.log = setup_logging(self.config.get('logging', {}),
args.instance_id,
verbosity_adjust=verbosity_adjust,
fluentd=args.fluentd)
# components
self.connection_manager = None
self.exiting = False
if not args.no_banner:
print_banner(self.log)
self.startup_components()
def start(self):
self.start_reactor() # will not return except Keyboard interrupt
@inlineCallbacks
def startup_components(self):
self.log.info('starting-internal-components')
args = self.args
self.connection_manager = yield ConnectionManager(
args.consul, args.grpc_endpoint, args.controller).start()
self.log.info('started-internal-services')
@inlineCallbacks
def shutdown_components(self):
"""Execute before the reactor is shut down"""
self.log.info('exiting-on-keyboard-interrupt')
self.exiting = True
if self.connection_manager is not None:
yield self.connection_manager.stop()
def start_reactor(self):
reactor.callWhenRunning(
lambda: self.log.info('twisted-reactor-started'))
reactor.addSystemEventTrigger('before', 'shutdown',
self.shutdown_components)
reactor.run()
if __name__ == '__main__':
Main().start()