autoconf - fix infinite lock and honor DOCKER_HOST env var
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bc01427def
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5a26d06c87
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@ -8,10 +8,10 @@ from logger import log
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class Config :
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def __init__(self, type, api_uri) :
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def __init__(self, type, api_uri, lock=None) :
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self.__type = type
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self.__api_uri = api_uri
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self.__lock = lock
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def __jobs(self) :
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log("config", "INFO", "starting jobs ...")
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@ -28,7 +28,13 @@ class Config :
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return True
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def gen(self, env) :
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locked = False
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try :
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# Lock
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if self.__lock :
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self.__lock.acquire()
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locked = True
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# Write environment variables to a file
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with open("/tmp/variables.env", "w") as f :
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for k, v in env.items() :
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@ -37,6 +43,11 @@ class Config :
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# Call the generator
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proc = subprocess.run(["/bin/su", "-c", "/opt/bunkerized-nginx/gen/main.py --settings /opt/bunkerized-nginx/settings.json --templates /opt/bunkerized-nginx/confs --output /etc/nginx --variables /tmp/variables.env", "nginx"], capture_output=True)
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# Unlock
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if self.__lock :
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self.__lock.release()
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locked = False
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# Print stdout/stderr
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stdout = proc.stdout.decode("ascii")
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stderr = proc.stderr.decode("ascii")
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@ -54,6 +65,8 @@ class Config :
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except Exception as e :
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log("config", "ERROR", "exception while generating site config : " + traceback.format_exc())
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if locked :
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self.__lock.release()
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return False
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def reload(self, instances) :
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@ -121,6 +134,8 @@ class Config :
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return False
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def __api_call(self, instances, path) :
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if self.__lock :
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self.__lock.acquire()
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ret = True
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urls = []
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if self.__type == Controller.Type.SWARM :
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@ -146,4 +161,6 @@ class Config :
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else :
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log("config", "INFO", "failed API order to " + url)
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ret = False
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if self.__lock :
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self.__lock.release()
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return ret
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@ -11,7 +11,7 @@ class Type(Enum) :
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class Controller(ABC) :
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def __init__(self, type, api_uri=None, lock=None) :
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self._config = Config(type, api_uri)
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self._config = Config(type, api_uri, lock)
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self.lock = lock
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@abstractmethod
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@ -5,10 +5,9 @@ from logger import log
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class DockerController(Controller.Controller) :
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def __init__(self) :
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def __init__(self, docker_host) :
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super().__init__(Controller.Type.DOCKER)
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# TODO : honor env vars like DOCKER_HOST
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self.__client = docker.DockerClient(base_url='unix:///var/run/docker.sock')
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self.__client = docker.DockerClient(base_url=docker_host)
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def __get_instances(self) :
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return self.__client.containers.list(filters={"label" : "bunkerized-nginx.AUTOCONF"})
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@ -75,24 +75,20 @@ class IngressController(Controller.Controller) :
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def __watch_ingress(self) :
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w = watch.Watch()
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for event in w.stream(self.__extensions_api.list_ingress_for_all_namespaces) :
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self.lock.acquire()
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new_env = self.get_env()
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if new_env != self.__old_env() :
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if self.gen_conf(new_env, lock=False) :
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self.__old_env = new_env.copy()
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log("CONTROLLER", "INFO", "successfully generated new configuration")
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self.lock.release()
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def __watch_service(self) :
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w = watch.Watch()
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for event in w.stream(self.__api.list_service_for_all_namespaces) :
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self.lock.acquire()
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new_env = self.get_env()
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if new_env != self.__old_env() :
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if self.gen_conf(new_env, lock=False) :
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self.__old_env = new_env.copy()
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log("CONTROLLER", "INFO", "successfully generated new configuration")
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self.lock.release()
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def reload(self) :
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return self._reload(self.__get_ingresses())
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@ -7,10 +7,9 @@ import Controller
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class SwarmController(Controller.Controller) :
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def __init__(self, api_uri) :
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def __init__(self, docker_host, api_uri) :
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super().__init__(Controller.Type.SWARM, api_uri=api_uri, lock=Lock())
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# TODO : honor env vars like DOCKER_HOST
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self.__client = docker.DockerClient(base_url='unix:///var/run/docker.sock')
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self.__client = docker.DockerClient(base_url=docker_host)
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def __get_instances(self) :
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return self.__client.services.list(filters={"label" : "bunkerized-nginx.AUTOCONF"})
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@ -45,7 +44,6 @@ class SwarmController(Controller.Controller) :
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for event in self.__client.events(decode=True, filters={"type": "service"}) :
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new_env = self.get_env()
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if new_env != old_env :
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self.lock.acquire()
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log("controller", "INFO", "generating new configuration")
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if self.gen_conf(new_env) :
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old_env = new_env.copy()
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@ -56,7 +54,6 @@ class SwarmController(Controller.Controller) :
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log("controller", "ERROR", "failed reload")
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else :
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log("controller", "ERROR", "can't generate new configuration")
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self.lock.release()
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def reload(self) :
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return self._reload(self.__get_instances())
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@ -11,20 +11,21 @@ from IngressController import IngressController
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from logger import log
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# Get variables
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swarm = os.getenv("SWARM_MODE", "no") == "yes"
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kubernetes = os.getenv("KUBERNETES_MODE", "no") == "yes"
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api_uri = os.getenv("API_URI", "")
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swarm = os.getenv("SWARM_MODE", "no") == "yes"
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kubernetes = os.getenv("KUBERNETES_MODE", "no") == "yes"
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api_uri = os.getenv("API_URI", "")
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docker_host = os.getenv("DOCKER_HOST", "unix:///var/run/docker.sock")
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# Instantiate the controller
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if swarm :
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log("autoconf", "INFO", "swarm mode detected")
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controller = SwarmController(api_uri)
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controller = SwarmController(docker_host, api_uri)
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elif kubernetes :
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log("autoconf", "INFO", "kubernetes mode detected")
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controller = IngressController(api_uri)
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else :
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log("autoconf", "INFO", "docker mode detected")
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controller = DockerController()
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controller = DockerController(docker_host)
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# Run the reload server in background if needed
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if swarm or kubernetes :
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