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# Copyright 2015 Open Platform for NFV Project, Inc. and its contributors
# This software is distributed under the terms and conditions of the 'Apache-2.0'
# license which can be found in the file 'LICENSE' in this package distribution
# or at 'http://www.apache.org/licenses/LICENSE-2.0'.
import sys
import os
import hashlib
from oslo_log import log as logging
from docker import Client
import docker.errors as docker_errors
from moon_utilities import configuration, exceptions
from moon_orchestrator import messenger
LOG = logging.getLogger("moon.orchestrator")
CONTAINERS = {}
SLAVES = {}
docker_conf = configuration.get_configuration("docker")['docker']
docker = Client(base_url=docker_conf['url'])
LOG.info("docker_url={}".format(docker_conf['url']))
docker_network = docker_conf['network']
def kill_handler(signum, frame):
_exit(0)
class DockerManager:
def load(self, component, uuid=None, container_data=None):
"""Load a new docker mapping the component given
:param component: the name of the component (policy or function)
:param uuid: the uuid of the intra_extension linked to that component
:return: the created component
"""
component_id = component+"_"+hashlib.sha224(uuid.encode("utf-8")).hexdigest()
plugins = configuration.get_plugins()
if component in plugins.keys():
components = configuration.get_components()
configuration.add_component(
name=component_id,
uuid=component_id,
port=configuration.increment_port(),
bind="0.0.0.0",
extra=container_data,
container=plugins[component]['container']
)
# _command = plugins[component]['command']
# try:
# _index = _command.index("<UUID>")
# _command[_index] = component_id
# except ValueError:
# pass
self.run(component_id, environment={"UUID": component_id})
CONTAINERS[component_id] = components.get(component_id)
CONTAINERS[component_id]["running"] = True
return CONTAINERS[component_id]
def load_all_containers(self):
LOG.info("Try to load all containers...")
current_containers = [item["Names"][0] for item in docker.containers()]
components = configuration.get_components()
containers_not_running = []
for c_name in (
'/keystone',
'/consul',
'/db',
'/messenger'
):
if c_name not in current_containers:
containers_not_running.append(c_name)
if containers_not_running:
raise exceptions.ContainerMissing(
"Following containers are missing: {}".format(", ".join(containers_not_running)))
for c_name in (
'/interface',
'/manager',
'/router'):
if c_name not in current_containers:
LOG.info("Starting container {}...".format(c_name))
self.run(c_name.strip("/"))
else:
LOG.info("Container {} already running...".format(c_name))
CONTAINERS[c_name] = components.get(c_name.strip("/"))
CONTAINERS[c_name]["running"] = True
def run(self, name, environment=None):
components = configuration.get_components()
if name in components:
image = components[name]['container']
params = {
'image': image,
'name': name,
'hostname': name,
'detach': True,
'host_config': docker.create_host_config(network_mode=docker_network)
}
if 'port' in components[name] and components[name]['port']:
params["ports"] = [components[name]['port'], ]
params["host_config"] = docker.create_host_config(
network_mode=docker_network,
port_bindings={components[name]['port']: components[name]['port']}
)
if environment:
params["environment"] = environment
container = docker.create_container(**params)
docker.start(container=container.get('Id'))
@staticmethod
def get_component(uuid=None):
if uuid:
return CONTAINERS.get(uuid, None)
return CONTAINERS
@staticmethod
def kill(component_id, delete=True):
LOG.info("Killing container {}".format(component_id))
docker.kill(container=component_id)
if delete:
docker.remove_container(container=component_id)
def _exit(exit_number=0, error=None):
for _container in CONTAINERS:
LOG.warning("Deleting containers named {}...".format(_container))
# print(40 * "-" + _container)
try:
# print(docker.logs(container=_container).decode("utf-8"))
docker.kill(container=_container)
except docker_errors.NotFound:
LOG.error("The container {} was not found".format(_container))
except docker_errors.APIError as e:
LOG.error(e)
else:
docker.remove_container(container=_container)
LOG.info("Moon orchestrator: offline")
# TODO (asteroide): put in the debug log
if error:
LOG.info(str(error))
sys.exit(exit_number)
def __save_pid():
try:
open("/var/run/moon_orchestrator.pid", "w").write(str(os.getpid()))
except PermissionError:
LOG.warning("You don't have the right to write PID file in /var/run... Continuing anyway.")
LOG.warning("Writing PID file in {}".format(os.getcwd()))
open("./moon_orchestrator.pid", "w").write(str(os.getpid()))
def server():
configuration.init_logging()
conf = configuration.add_component("orchestrator", "orchestrator")
LOG.info("Starting main server {}".format(conf["components/orchestrator"]["hostname"]))
docker_manager = DockerManager()
docker_manager.load_all_containers()
serv = messenger.Server(containers=CONTAINERS, docker_manager=docker_manager, slaves=SLAVES)
try:
serv.run()
finally:
_exit(0)
def main():
server()
if __name__ == '__main__':
main()
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