62 lines
2.4 KiB
Python
62 lines
2.4 KiB
Python
import docker
|
|
|
|
from logger import log
|
|
|
|
import Controller
|
|
|
|
class SwarmController(Controller.Controller) :
|
|
|
|
def __init__(self, api_uri) :
|
|
super().__init__(Controller.Type.SWARM, api_uri=api_uri, lock=Lock())
|
|
# TODO : honor env vars like DOCKER_HOST
|
|
self.__client = docker.DockerClient(base_url='unix:///var/run/docker.sock')
|
|
|
|
def __get_instances(self) :
|
|
return self.__client.services.list(filters={"label" : "bunkerized-nginx.AUTOCONF"})
|
|
|
|
def __get_services(self) :
|
|
return self.__client.services.list(filters={"label" : "bunkerized-nginx.SERVER_NAME"})
|
|
|
|
def get_env(self) :
|
|
env = {}
|
|
for instance in self.__get_instances() :
|
|
for variable in instance.attrs["Spec"]["TaskTemplate"]["ContainerSpec"]["Env"] :
|
|
env[variable.split("=")[0]] = variable.replace(variable.split("=")[0] + "=", "", 1)
|
|
first_servers = []
|
|
if "SERVER_NAME" in env and env["SERVER_NAME"] != "" :
|
|
first_servers = env["SERVER_NAME"].split(" ")
|
|
for service in self.__get_services() :
|
|
first_server = service.attrs["Spec"]["Labels"]["bunkerized-nginx.SERVER_NAME"].split(" ")[0]
|
|
first_servers.append(first_server)
|
|
for variable, value in service.attrs["Spec"]["Labels"].items() :
|
|
if variable.startswith("bunkerized-nginx.") and variable != "bunkerized-nginx.AUTOCONF" :
|
|
env[first_server + "_" + variable.replace("bunkerized-nginx.", "", 1)] = value
|
|
if len(first_servers) == 0 :
|
|
env["SERVER_NAME"] = ""
|
|
else :
|
|
env["SERVER_NAME"] = " ".join(first_servers)
|
|
return self._fix_env(env)
|
|
|
|
def process_events(self, current_env) :
|
|
old_env = current_env
|
|
# TODO : check why filter isn't working as expected
|
|
#for event in self.__client.events(decode=True, filters={"type": "service", "label": ["bunkerized-nginx.AUTOCONF", "bunkerized-nginx.SERVER_NAME"]}) :
|
|
for event in self.__client.events(decode=True, filters={"type": "service"}) :
|
|
new_env = self.get_env()
|
|
if new_env != old_env :
|
|
self.lock.acquire()
|
|
log("controller", "INFO", "generating new configuration")
|
|
if self.gen_conf(new_env) :
|
|
old_env = new_env.copy()
|
|
log("controller", "INFO", "successfully generated new configuration")
|
|
if self.reload() :
|
|
log("controller", "INFO", "successful reload")
|
|
else :
|
|
log("controller", "ERROR", "failed reload")
|
|
else :
|
|
log("controller", "ERROR", "can't generate new configuration")
|
|
self.lock.release()
|
|
|
|
def reload(self) :
|
|
return self._reload(self.__get_instances())
|