bunkerweb/autoconf/DockerController.py

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2.6 KiB
Python
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import traceback
from docker import DockerClient
from Controller import Controller
from logger import log
class DockerController(Controller) :
def __init__(self, docker_host) :
super().__init__("docker")
self.__client = DockerClient(base_url=docker_host)
def _get_controller_instances(self) :
return self.__client.containers.list(filters={"label" : "bunkerweb.AUTOCONF"})
def _to_instances(self, controller_instance) :
instance = {}
instance["name"] = controller_instance.name
instance["hostname"] = controller_instance.name
instance["health"] = controller_instance.status == "running" and controller_instance.attrs["State"]["Health"]["Status"] == "healthy"
instance["env"] = {}
for env in controller_instance.attrs["Config"]["Env"] :
variable = env.split("=")[0]
if variable in ["PATH", "NGINX_VERSION", "NJS_VERSION", "PKG_RELEASE"] :
continue
value = env.replace(variable + "=", "", 1)
instance["env"][variable] = value
return [instance]
def _get_controller_services(self) :
return self.__client.containers.list(filters={"label" : "bunkerweb.SERVER_NAME"})
def _to_services(self, controller_service) :
service = {}
for variable, value in controller_service.labels.items() :
if not variable.startswith("bunkerweb.") :
continue
service[variable.replace("bunkerweb.", "", 1)] = value
return [service]
def get_configs(self) :
raise("get_configs is not supported with DockerController")
def apply_config(self) :
return self._config.apply(self._instances, self._services)
def process_events(self) :
for event in self.__client.events(decode=True, filters={"type": "container"}) :
self._instances = self.get_instances()
self._services = self.get_services()
if not self._config.update_needed(self._instances, self._services) :
continue
log("DOCKER-CONTROLLER", "", "Catched docker event, deploying new configuration ...")
try :
ret = self.apply_config()
if not ret :
log("DOCKER-CONTROLLER", "", "Error while deploying new configuration")
else :
log("DOCKER-CONTROLLER", "", "Successfully deployed new configuration 🚀")
except :
log("DOCKER-CONTROLLER", "", "Exception while deploying new configuration :")
print(traceback.format_exc())