X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?a=blobdiff_plain;f=ricxappframe%2Fxapp_frame.py;fp=ricxappframe%2Fxapp_frame.py;h=5428ce92f719f9c7bce560612d1f4bcfd819f7d1;hb=bac18952225035e44ae7672b81dacc2793944a16;hp=8abc443ee34e88413b85e7040818f210e06fd6a5;hpb=6b6b79b0ac66347c3e6b70fd82796390d0ddddf1;p=ric-plt%2Fxapp-frame-py.git diff --git a/ricxappframe/xapp_frame.py b/ricxappframe/xapp_frame.py index 8abc443..5428ce9 100644 --- a/ricxappframe/xapp_frame.py +++ b/ricxappframe/xapp_frame.py @@ -22,19 +22,21 @@ should instantiate and/or subclass depending on their needs. import json import os import queue +import time from threading import Thread import inotify_simple from mdclogpy import Logger from ricxappframe import xapp_rmr from ricxappframe.rmr import rmr from ricxappframe.xapp_sdl import SDLWrapper - +import requests # message-type constants RIC_HEALTH_CHECK_REQ = 100 RIC_HEALTH_CHECK_RESP = 101 # environment variable with path to configuration file CONFIG_FILE_ENV = "CONFIG_FILE" +CONFIG_FILE_PATH = "CONFIG_FILE_PATH" class _BaseXapp: @@ -96,10 +98,180 @@ class _BaseXapp: self._inotify = None self.logger.warning("__init__: NOT watching any config file") + # used for thread control of Registration of Xapp + self._keep_registration = True + + # configuration data for xapp registration and deregistration + self._config_data = None + self._configfile_path = os.environ.get(CONFIG_FILE_PATH, None) + if self._configfile_path and os.path.isfile(self._configfile_path): + with open(self._configfile_path) as json_file: + self._config_data = json.load(json_file) + else: + self._keep_registration = False + self.logger.warning("__init__: Cannot Read config file for xapp Registration") + + Thread(target=self.registerXapp).start() + # run the optionally provided user post init if post_init: post_init(self) + def get_service(self, host, service): + """ + To find the url for connecting to the service + + Parameters + ---------- + host: string + defines the hostname in the url + service: string + defines the servicename in the url + + Returns + ------- + string + url for the service + """ + app_namespace = self._config_data.get("APP_NAMESPACE") + if app_namespace == "": + app_namespace = self._config_data.get("DEFAULT_XAPP_NS") + svc = service.format(app_namespace.upper(), host.upper()) + url = svc.replace("-", "_").split("//") + + if len(url) > 1: + return url[1] + return "" + + def do_post(self, plt_namespace, url, msg): + """ + registration of the xapp using the url and json msg + + Parameters + ---------- + plt_namespace: string + platform namespace where the xapp is running + url: string + url for xapp registration + msg: string + json msg containing the xapp details + + Returns + ------- + bool + whether or not the xapp is registered + """ + try: + request_url = url.format(plt_namespace, plt_namespace) + resp = requests.post(request_url, json=msg) + self.logger.debug("Post to '{}' done, status : {}".format(request_url, resp.status_code)) + return resp.status_code == 200 or resp.status_code == 201 + except requests.exceptions.RequestException as err: + self.logger.error("Error : {}".format(err)) + return format(err) + except requests.exceptions.HTTPError as errh: + self.logger.error("Http Error: {}".format(errh)) + return errh + except requests.exceptions.ConnectionError as errc: + self.logger.error("Error Connecting: {}".format(errc)) + return errc + except requests.exceptions.Timeout as errt: + self.logger.error("Timeout Error: {}".format(errt)) + return errt + + def register(self): + """ + function to registers the xapp + + Returns + ------- + bool + whether or not the xapp is registered + """ + hostname = self._config_data.get("hostname") + xappname = self._config_data.get("name") + xappversion = self._config_data.get("version") + pltnamespace = self._config_data.get("PLT_NAMESPACE") + if pltnamespace == "": + pltnamespace = self._config_data.get("DEFAULT_PLT_NS") + http_endpoint = self.get_service(hostname, self._config_data.get("SERVICE_HTTP")) + rmr_endpoint = self.get_service(hostname, self._config_data.get("SERVICE_RMR")) + if http_endpoint == "" or rmr_endpoint == "": + self.logger.warning("Couldn't resolve service endpoints: http_endpoint={} rmr_endpoint={}".format(http_endpoint, rmr_endpoint)) + return None + try: + request_string = { + "appName": hostname, + "httpEndpoint": http_endpoint, + "rmrEndpoint": rmr_endpoint, + "appInstanceName": xappname, + "appVersion": xappversion, + "configPath": self._config_data.get("CONFIG_PATH") + } + request_body = json.dumps(request_string) + except TypeError: + self.logger.error("Unable to serialize the object") + return "Error searializing the object" + + return self.do_post(pltnamespace, self._config_data.get("REGISTER_PATH"), request_body) + + def registerXapp(self): + """ + registers the xapp + """ + while self._keep_registration: + time.sleep(5) + # checking for rmr/sdl/xapp health + healthy = self.healthcheck() + if not healthy: + self.logger.warning("Application='{}' is not ready yet, waiting ...".format(self._config_data.get("name"))) + continue + + self.logger.debug("Application='{}' is now up and ready, continue with registration ...".format(self._config_data.get("name"))) + self.register() + self.logger.debug("Registration done, proceeding with startup ...") + break + + def deregister(self): + """ + Deregisters the xapp + + Returns + ------- + bool + whether or not the xapp is registered + """ + healthy = self.healthcheck() + if not healthy: + self.logger.error("RMR or SDL or xapp == Not Healthy") + return None + if self._config_data is None: + return None + name = self._config_data.get("hostname") + xappname = self._config_data.get("name") + pltnamespace = self._config_data.get("PLT_NAMESPACE") + if pltnamespace == "": + pltnamespace = self._config_data.get("PLT_NAMESPACE") + try: + request_string = { + "appName": name, + "appInstanceName": xappname, + } + request_body = json.dumps(request_string) + except TypeError: + self.logger.error("Error Serializing the object") + return "Error serializing the object" + + return self.do_post(pltnamespace, self._config_data.get("DEREGISTER_PATH"), request_body) + + def xapp_shutdown(self): + """ + Deregisters the xapp while shutting down + """ + self.deregister() + self.logger.debug("Wait for xapp to get unregistered") + time.sleep(10) + # Public rmr methods def rmr_get_messages(self): @@ -335,6 +507,9 @@ class _BaseXapp: TODO: can we register a ctrl-c handler so this gets called on ctrl-c? Because currently two ctrl-c are needed to stop. """ + + self.xapp_shutdown() + self._rmr_loop.stop()