X-Git-Url: https://osm.etsi.org/gitweb/?a=blobdiff_plain;f=n2vc%2Flibjuju.py;h=b0034534168f8ee641ce895d856b4bc4c5b1dd3e;hb=9831d7e8205bce462a669a8cc2b3dc1a611c924c;hp=7a29a1682141b7dab383ba823a815424e016530f;hpb=fa02f8a90b7fe1e1b7a80feedef4132bef1ca3e4;p=osm%2FN2VC.git diff --git a/n2vc/libjuju.py b/n2vc/libjuju.py index 7a29a16..b003453 100644 --- a/n2vc/libjuju.py +++ b/n2vc/libjuju.py @@ -33,6 +33,7 @@ from juju.controller import Controller from juju.client import client from juju import tag +from n2vc.definitions import Offer, RelationEndpoint from n2vc.juju_watcher import JujuModelWatcher from n2vc.provisioner import AsyncSSHProvisioner from n2vc.n2vc_conn import N2VCConnector @@ -94,7 +95,7 @@ class Libjuju: """ controller = None try: - controller = Controller(loop=self.loop) + controller = Controller() await asyncio.wait_for( controller.connect( endpoint=self.vca_connection.data.endpoints, @@ -121,7 +122,10 @@ class Libjuju: ) if controller: await self.disconnect_controller(controller) - raise JujuControllerFailedConnecting(e) + + raise JujuControllerFailedConnecting( + f"Error connecting to Juju controller: {e}" + ) async def disconnect(self): """Disconnect""" @@ -558,7 +562,7 @@ class Libjuju: controller = await self.get_controller() model = await self.get_model(controller, model_name) try: - await model.deploy(uri) + await model.deploy(uri, trust=True) if wait: await JujuModelWatcher.wait_for_model(model, timeout=timeout) self.log.debug("All units active in model {}".format(model_name)) @@ -594,7 +598,6 @@ class Libjuju: application = self._get_application(model, application_name) if application is not None: - # Checks if the given machine id in the model, # otherwise function raises an error _machine, _series = self._get_machine_info(model, machine_id) @@ -642,7 +645,6 @@ class Libjuju: :param: application_name: Application name :param: model_name: Model name :param: machine_id Machine id - :param: db_dict: Dictionary with data of the DB to write the updates :param: total_timeout: Timeout for the entity to be active :return: None @@ -750,7 +752,6 @@ class Libjuju: try: if application_name not in model.applications: - if machine_id is not None: machine, series = self._get_machine_info(model, machine_id) @@ -792,12 +793,164 @@ class Libjuju: raise JujuApplicationExists( "Application {} exists".format(application_name) ) + except juju.errors.JujuError as e: + if "already exists" in e.message: + raise JujuApplicationExists( + "Application {} exists".format(application_name) + ) + else: + raise e finally: await self.disconnect_model(model) await self.disconnect_controller(controller) return application + async def upgrade_charm( + self, + application_name: str, + path: str, + model_name: str, + total_timeout: float = None, + **kwargs, + ): + """Upgrade Charm + + :param: application_name: Application name + :param: model_name: Model name + :param: path: Local path to the charm + :param: total_timeout: Timeout for the entity to be active + + :return: (str, str): (output and status) + """ + + self.log.debug( + "Upgrading charm {} in model {} from path {}".format( + application_name, model_name, path + ) + ) + + await self.resolve_application( + model_name=model_name, application_name=application_name + ) + + # Get controller + controller = await self.get_controller() + + # Get model + model = await self.get_model(controller, model_name) + + try: + # Get application + application = self._get_application( + model, + application_name=application_name, + ) + if application is None: + raise JujuApplicationNotFound( + "Cannot find application {} to upgrade".format(application_name) + ) + + await application.refresh(path=path) + + self.log.debug( + "Wait until charm upgrade is completed for application {} (model={})".format( + application_name, model_name + ) + ) + + await JujuModelWatcher.ensure_units_idle( + model=model, application=application + ) + + if application.status == "error": + error_message = "Unknown" + for unit in application.units: + if ( + unit.workload_status == "error" + and unit.workload_status_message != "" + ): + error_message = unit.workload_status_message + + message = "Application {} failed update in {}: {}".format( + application_name, model_name, error_message + ) + self.log.error(message) + raise JujuError(message=message) + + self.log.debug( + "Application {} is ready in model {}".format( + application_name, model_name + ) + ) + + finally: + await self.disconnect_model(model) + await self.disconnect_controller(controller) + + return application + + async def resolve_application(self, model_name: str, application_name: str): + controller = await self.get_controller() + model = await self.get_model(controller, model_name) + + try: + application = self._get_application( + model, + application_name=application_name, + ) + if application is None: + raise JujuApplicationNotFound( + "Cannot find application {} to resolve".format(application_name) + ) + + while application.status == "error": + for unit in application.units: + if unit.workload_status == "error": + self.log.debug( + "Model {}, Application {}, Unit {} in error state, resolving".format( + model_name, application_name, unit.entity_id + ) + ) + try: + await unit.resolved(retry=False) + except Exception: + pass + + await asyncio.sleep(1) + + finally: + await self.disconnect_model(model) + await self.disconnect_controller(controller) + + async def resolve(self, model_name: str): + controller = await self.get_controller() + model = await self.get_model(controller, model_name) + all_units_active = False + try: + while not all_units_active: + all_units_active = True + for application_name, application in model.applications.items(): + if application.status == "error": + for unit in application.units: + if unit.workload_status == "error": + self.log.debug( + "Model {}, Application {}, Unit {} in error state, resolving".format( + model_name, application_name, unit.entity_id + ) + ) + try: + await unit.resolved(retry=False) + all_units_active = False + except Exception: + pass + + if not all_units_active: + await asyncio.sleep(5) + finally: + await self.disconnect_model(model) + await self.disconnect_controller(controller) + async def scale_application( self, model_name: str, @@ -1122,28 +1275,71 @@ class Libjuju: await self.disconnect_model(model) await self.disconnect_controller(controller) + async def offer(self, endpoint: RelationEndpoint) -> Offer: + """ + Create an offer from a RelationEndpoint + + :param: endpoint: Relation endpoint + + :return: Offer object + """ + model_name = endpoint.model_name + offer_name = f"{endpoint.application_name}-{endpoint.endpoint_name}" + controller = await self.get_controller() + model = None + try: + model = await self.get_model(controller, model_name) + await model.create_offer(endpoint.endpoint, offer_name=offer_name) + offer_list = await self._list_offers(model_name, offer_name=offer_name) + if offer_list: + return Offer(offer_list[0].offer_url) + else: + raise Exception("offer was not created") + except juju.errors.JujuError as e: + if "application offer already exists" not in e.message: + raise e + finally: + if model: + self.disconnect_model(model) + self.disconnect_controller(controller) + async def consume( self, - offer_url: str, model_name: str, - ): + offer: Offer, + provider_libjuju: "Libjuju", + ) -> str: """ - Adds a remote offer to the model. Relations can be created later using "juju relate". + Consumes a remote offer in the model. Relations can be created later using "juju relate". - :param: offer_url: Offer Url - :param: model_name: Model name + :param: model_name: Model name + :param: offer: Offer object to consume + :param: provider_libjuju: Libjuju object of the provider endpoint :raises ParseError if there's a problem parsing the offer_url :raises JujuError if remote offer includes and endpoint :raises JujuAPIError if the operation is not successful + + :returns: Saas name. It is the application name in the model that reference the remote application. """ + saas_name = f'{offer.name}-{offer.model_name.replace("-", "")}' + if offer.vca_id: + saas_name = f"{saas_name}-{offer.vca_id}" controller = await self.get_controller() - model = await controller.get_model(model_name) - + model = None + provider_controller = None try: - await model.consume(offer_url) + model = await controller.get_model(model_name) + provider_controller = await provider_libjuju.get_controller() + await model.consume( + offer.url, application_alias=saas_name, controller=provider_controller + ) + return saas_name finally: - await self.disconnect_model(model) + if model: + await self.disconnect_model(model) + if provider_controller: + await provider_libjuju.disconnect_controller(provider_controller) await self.disconnect_controller(controller) async def destroy_model(self, model_name: str, total_timeout: float = 1800): @@ -1158,28 +1354,38 @@ class Libjuju: model = None try: if not await self.model_exists(model_name, controller=controller): + self.log.warn(f"Model {model_name} doesn't exist") return - self.log.debug("Destroying model {}".format(model_name)) - + self.log.debug(f"Getting model {model_name} to be destroyed") model = await self.get_model(controller, model_name) + self.log.debug(f"Destroying manual machines in model {model_name}") # Destroy machines that are manually provisioned # and still are in pending state await self._destroy_pending_machines(model, only_manual=True) await self.disconnect_model(model) - await self._destroy_model( - model_name, - controller, + await asyncio.wait_for( + self._destroy_model(model_name, controller), timeout=total_timeout, ) + except Exception as e: + if not await self.model_exists(model_name, controller=controller): + self.log.warn( + f"Failed deleting model {model_name}: model doesn't exist" + ) + return + self.log.warn(f"Failed deleting model {model_name}: {e}") + raise e finally: if model: await self.disconnect_model(model) await self.disconnect_controller(controller) async def _destroy_model( - self, model_name: str, controller: Controller, timeout: float = 1800 + self, + model_name: str, + controller: Controller, ): """ Destroy model from controller @@ -1188,22 +1394,42 @@ class Libjuju: :param: controller: Controller object :param: timeout: Timeout in seconds """ + self.log.debug(f"Destroying model {model_name}") - async def _destroy_model_loop(model_name: str, controller: Controller): - while await self.model_exists(model_name, controller=controller): + async def _destroy_model_gracefully(model_name: str, controller: Controller): + self.log.info(f"Gracefully deleting model {model_name}") + resolved = False + while model_name in await controller.list_models(): + if not resolved: + await self.resolve(model_name) + resolved = True + await controller.destroy_model(model_name, destroy_storage=True) + + await asyncio.sleep(5) + self.log.info(f"Model {model_name} deleted gracefully") + + async def _destroy_model_forcefully(model_name: str, controller: Controller): + self.log.info(f"Forcefully deleting model {model_name}") + while model_name in await controller.list_models(): await controller.destroy_model( - model_name, destroy_storage=True, force=True, max_wait=0 + model_name, destroy_storage=True, force=True, max_wait=60 ) await asyncio.sleep(5) + self.log.info(f"Model {model_name} deleted forcefully") try: - await asyncio.wait_for( - _destroy_model_loop(model_name, controller), timeout=timeout - ) - except asyncio.TimeoutError: - raise Exception( - "Timeout waiting for model {} to be destroyed".format(model_name) - ) + try: + await asyncio.wait_for( + _destroy_model_gracefully(model_name, controller), timeout=120 + ) + except asyncio.TimeoutError: + await _destroy_model_forcefully(model_name, controller) + except juju.errors.JujuError as e: + if any("has been removed" in error for error in e.errors): + return + if any("model not found" in error for error in e.errors): + return + raise e async def destroy_application( self, model_name: str, application_name: str, total_timeout: float @@ -1340,17 +1566,29 @@ class Libjuju: finally: await self.disconnect_controller(controller) - async def list_offers(self, model_name: str) -> QueryApplicationOffersResults: - """List models with certain names + async def _list_offers( + self, model_name: str, offer_name: str = None + ) -> QueryApplicationOffersResults: + """ + List offers within a model :param: model_name: Model name + :param: offer_name: Offer name to filter. - :return: Returns list of offers + :return: Returns application offers results in the model """ controller = await self.get_controller() try: - return await controller.list_offers(model_name) + offers = (await controller.list_offers(model_name)).results + if offer_name: + matching_offer = [] + for offer in offers: + if offer.offer_name == offer_name: + matching_offer.append(offer) + break + offers = matching_offer + return offers finally: await self.disconnect_controller(controller)