+##
+# Copyright 2019 Telefonica Investigacion y Desarrollo, S.A.U.
+# This file is part of OSM
+# All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact with: nfvlabs@tid.es
+##
+import abc
+import asyncio
+import random
+import time
+import shlex
+import shutil
+import stat
+import subprocess
+import os
+import yaml
+from uuid import uuid4
+
+from n2vc.exceptions import K8sException
+from n2vc.k8s_conn import K8sConnector
+
+
+class K8sHelmBaseConnector(K8sConnector):
+
+ """
+ ####################################################################################
+ ################################### P U B L I C ####################################
+ ####################################################################################
+ """
+ service_account = "osm"
+
+ def __init__(
+ self,
+ fs: object,
+ db: object,
+ kubectl_command: str = "/usr/bin/kubectl",
+ helm_command: str = "/usr/bin/helm",
+ log: object = None,
+ on_update_db=None,
+ ):
+ """
+
+ :param fs: file system for kubernetes and helm configuration
+ :param db: database object to write current operation status
+ :param kubectl_command: path to kubectl executable
+ :param helm_command: path to helm executable
+ :param log: logger
+ :param on_update_db: callback called when k8s connector updates database
+ """
+
+ # parent class
+ K8sConnector.__init__(self, db=db, log=log, on_update_db=on_update_db)
+
+ self.log.info("Initializing K8S Helm connector")
+
+ # random numbers for release name generation
+ random.seed(time.time())
+
+ # the file system
+ self.fs = fs
+
+ # exception if kubectl is not installed
+ self.kubectl_command = kubectl_command
+ self._check_file_exists(filename=kubectl_command, exception_if_not_exists=True)
+
+ # exception if helm is not installed
+ self._helm_command = helm_command
+ self._check_file_exists(filename=helm_command, exception_if_not_exists=True)
+
+ @staticmethod
+ def _get_namespace_cluster_id(cluster_uuid: str) -> (str, str):
+ """
+ Parses cluster_uuid stored at database that can be either 'namespace:cluster_id' or only
+ cluster_id for backward compatibility
+ """
+ namespace, _, cluster_id = cluster_uuid.rpartition(':')
+ return namespace, cluster_id
+
+ async def init_env(
+ self, k8s_creds: str, namespace: str = "kube-system", reuse_cluster_uuid=None
+ ) -> (str, bool):
+ """
+ It prepares a given K8s cluster environment to run Charts
+
+ :param k8s_creds: credentials to access a given K8s cluster, i.e. a valid
+ '.kube/config'
+ :param namespace: optional namespace to be used for helm. By default,
+ 'kube-system' will be used
+ :param reuse_cluster_uuid: existing cluster uuid for reuse
+ :return: uuid of the K8s cluster and True if connector has installed some
+ software in the cluster
+ (on error, an exception will be raised)
+ """
+
+ if reuse_cluster_uuid:
+ namespace_, cluster_id = self._get_namespace_cluster_id(reuse_cluster_uuid)
+ namespace = namespace_ or namespace
+ else:
+ cluster_id = str(uuid4())
+ cluster_uuid = "{}:{}".format(namespace, cluster_id)
+
+ self.log.debug("Initializing K8S Cluster {}. namespace: {}".format(cluster_id, namespace))
+
+ paths, env = self._init_paths_env(
+ cluster_name=cluster_id, create_if_not_exist=True
+ )
+ mode = stat.S_IRUSR | stat.S_IWUSR
+ with open(paths["kube_config"], "w", mode) as f:
+ f.write(k8s_creds)
+ os.chmod(paths["kube_config"], 0o600)
+
+ # Code with initialization specific of helm version
+ n2vc_installed_sw = await self._cluster_init(cluster_id, namespace, paths, env)
+
+ # sync fs with local data
+ self.fs.reverse_sync(from_path=cluster_id)
+
+ self.log.info("Cluster {} initialized".format(cluster_id))
+
+ return cluster_uuid, n2vc_installed_sw
+
+ async def repo_add(
+ self, cluster_uuid: str, name: str, url: str, repo_type: str = "chart"
+ ):
+ _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
+ self.log.debug("Cluster {}, adding {} repository {}. URL: {}".format(
+ cluster_id, repo_type, name, url))
+
+ # sync local dir
+ self.fs.sync(from_path=cluster_id)
+
+ # init_env
+ paths, env = self._init_paths_env(
+ cluster_name=cluster_id, create_if_not_exist=True
+ )
+
+ # helm repo update
+ command = "{} repo update".format(
+ self._helm_command
+ )
+ self.log.debug("updating repo: {}".format(command))
+ await self._local_async_exec(command=command, raise_exception_on_error=False, env=env)
+
+ # helm repo add name url
+ command = "{} repo add {} {}".format(
+ self._helm_command, name, url
+ )
+ self.log.debug("adding repo: {}".format(command))
+ await self._local_async_exec(command=command, raise_exception_on_error=True, env=env)
+
+ # sync fs
+ self.fs.reverse_sync(from_path=cluster_id)
+
+ async def repo_list(self, cluster_uuid: str) -> list:
+ """
+ Get the list of registered repositories
+
+ :return: list of registered repositories: [ (name, url) .... ]
+ """
+
+ _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
+ self.log.debug("list repositories for cluster {}".format(cluster_id))
+
+ # sync local dir
+ self.fs.sync(from_path=cluster_id)
+
+ # config filename
+ paths, env = self._init_paths_env(
+ cluster_name=cluster_id, create_if_not_exist=True
+ )
+
+ command = "{} repo list --output yaml".format(
+ self._helm_command
+ )
+
+ # Set exception to false because if there are no repos just want an empty list
+ output, _rc = await self._local_async_exec(
+ command=command, raise_exception_on_error=False, env=env
+ )
+
+ # sync fs
+ self.fs.reverse_sync(from_path=cluster_id)
+
+ if _rc == 0:
+ if output and len(output) > 0:
+ repos = yaml.load(output, Loader=yaml.SafeLoader)
+ # unify format between helm2 and helm3 setting all keys lowercase
+ return self._lower_keys_list(repos)
+ else:
+ return []
+ else:
+ return []
+
+ async def repo_remove(self, cluster_uuid: str, name: str):
+
+ _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
+ self.log.debug("remove {} repositories for cluster {}".format(name, cluster_id))
+
+ # sync local dir
+ self.fs.sync(from_path=cluster_id)
+
+ # init env, paths
+ paths, env = self._init_paths_env(
+ cluster_name=cluster_id, create_if_not_exist=True
+ )
+
+ command = "{} repo remove {}".format(
+ self._helm_command, name
+ )
+ await self._local_async_exec(command=command, raise_exception_on_error=True, env=env)
+
+ # sync fs
+ self.fs.reverse_sync(from_path=cluster_id)
+
+ async def reset(
+ self, cluster_uuid: str, force: bool = False, uninstall_sw: bool = False
+ ) -> bool:
+
+ namespace, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
+ self.log.debug("Resetting K8s environment. cluster uuid: {} uninstall={}"
+ .format(cluster_id, uninstall_sw))
+
+ # sync local dir
+ self.fs.sync(from_path=cluster_id)
+
+ # uninstall releases if needed.
+ if uninstall_sw:
+ releases = await self.instances_list(cluster_uuid=cluster_uuid)
+ if len(releases) > 0:
+ if force:
+ for r in releases:
+ try:
+ kdu_instance = r.get("name")
+ chart = r.get("chart")
+ self.log.debug(
+ "Uninstalling {} -> {}".format(chart, kdu_instance)
+ )
+ await self.uninstall(
+ cluster_uuid=cluster_uuid, kdu_instance=kdu_instance
+ )
+ except Exception as e:
+ # will not raise exception as it was found
+ # that in some cases of previously installed helm releases it
+ # raised an error
+ self.log.warn(
+ "Error uninstalling release {}: {}".format(kdu_instance, e)
+ )
+ else:
+ msg = (
+ "Cluster uuid: {} has releases and not force. Leaving K8s helm environment"
+ ).format(cluster_id)
+ self.log.warn(msg)
+ uninstall_sw = False # Allow to remove k8s cluster without removing Tiller
+
+ if uninstall_sw:
+ await self._uninstall_sw(cluster_id, namespace)
+
+ # delete cluster directory
+ self.log.debug("Removing directory {}".format(cluster_id))
+ self.fs.file_delete(cluster_id, ignore_non_exist=True)
+ # Remove also local directorio if still exist
+ direct = self.fs.path + "/" + cluster_id
+ shutil.rmtree(direct, ignore_errors=True)
+
+ return True
+
+ async def install(
+ self,
+ cluster_uuid: str,
+ kdu_model: str,
+ atomic: bool = True,
+ timeout: float = 300,
+ params: dict = None,
+ db_dict: dict = None,
+ kdu_name: str = None,
+ namespace: str = None,
+ ):
+ _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
+ self.log.debug("installing {} in cluster {}".format(kdu_model, cluster_id))
+
+ # sync local dir
+ self.fs.sync(from_path=cluster_id)
+
+ # init env, paths
+ paths, env = self._init_paths_env(
+ cluster_name=cluster_id, create_if_not_exist=True
+ )
+
+ # params to str
+ params_str, file_to_delete = self._params_to_file_option(
+ cluster_id=cluster_id, params=params
+ )
+
+ # version
+ version = None
+ if ":" in kdu_model:
+ parts = kdu_model.split(sep=":")
+ if len(parts) == 2:
+ version = str(parts[1])
+ kdu_model = parts[0]
+
+ # generate a name for the release. Then, check if already exists
+ kdu_instance = None
+ while kdu_instance is None:
+ kdu_instance = self._generate_release_name(kdu_model)
+ try:
+ result = await self._status_kdu(
+ cluster_id=cluster_id,
+ kdu_instance=kdu_instance,
+ namespace=namespace,
+ show_error_log=False,
+ )
+ if result is not None:
+ # instance already exists: generate a new one
+ kdu_instance = None
+ except K8sException:
+ pass
+
+ command = self._get_install_command(kdu_model, kdu_instance, namespace,
+ params_str, version, atomic, timeout)
+
+ self.log.debug("installing: {}".format(command))
+
+ if atomic:
+ # exec helm in a task
+ exec_task = asyncio.ensure_future(
+ coro_or_future=self._local_async_exec(
+ command=command, raise_exception_on_error=False, env=env
+ )
+ )
+
+ # write status in another task
+ status_task = asyncio.ensure_future(
+ coro_or_future=self._store_status(
+ cluster_id=cluster_id,
+ kdu_instance=kdu_instance,
+ namespace=namespace,
+ db_dict=db_dict,
+ operation="install",
+ run_once=False,
+ )
+ )
+
+ # wait for execution task
+ await asyncio.wait([exec_task])
+
+ # cancel status task
+ status_task.cancel()
+
+ output, rc = exec_task.result()
+
+ else:
+
+ output, rc = await self._local_async_exec(
+ command=command, raise_exception_on_error=False, env=env
+ )
+
+ # remove temporal values yaml file
+ if file_to_delete:
+ os.remove(file_to_delete)
+
+ # write final status
+ await self._store_status(
+ cluster_id=cluster_id,
+ kdu_instance=kdu_instance,
+ namespace=namespace,
+ db_dict=db_dict,
+ operation="install",
+ run_once=True,
+ check_every=0,
+ )
+
+ if rc != 0:
+ msg = "Error executing command: {}\nOutput: {}".format(command, output)
+ self.log.error(msg)
+ raise K8sException(msg)
+
+ # sync fs
+ self.fs.reverse_sync(from_path=cluster_id)
+
+ self.log.debug("Returning kdu_instance {}".format(kdu_instance))
+ return kdu_instance
+
+ async def upgrade(
+ self,
+ cluster_uuid: str,
+ kdu_instance: str,
+ kdu_model: str = None,
+ atomic: bool = True,
+ timeout: float = 300,
+ params: dict = None,
+ db_dict: dict = None,
+ ):
+ _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
+ self.log.debug("upgrading {} in cluster {}".format(kdu_model, cluster_id))
+
+ # sync local dir
+ self.fs.sync(from_path=cluster_id)
+
+ # look for instance to obtain namespace
+ instance_info = await self.get_instance_info(cluster_uuid, kdu_instance)
+ if not instance_info:
+ raise K8sException("kdu_instance {} not found".format(kdu_instance))
+
+ # init env, paths
+ paths, env = self._init_paths_env(
+ cluster_name=cluster_id, create_if_not_exist=True
+ )
+
+ # params to str
+ params_str, file_to_delete = self._params_to_file_option(
+ cluster_id=cluster_id, params=params
+ )
+
+ # version
+ version = None
+ if ":" in kdu_model:
+ parts = kdu_model.split(sep=":")
+ if len(parts) == 2:
+ version = str(parts[1])
+ kdu_model = parts[0]
+
+ command = self._get_upgrade_command(kdu_model, kdu_instance, instance_info["namespace"],
+ params_str, version, atomic, timeout)
+
+ self.log.debug("upgrading: {}".format(command))
+
+ if atomic:
+
+ # exec helm in a task
+ exec_task = asyncio.ensure_future(
+ coro_or_future=self._local_async_exec(
+ command=command, raise_exception_on_error=False, env=env
+ )
+ )
+ # write status in another task
+ status_task = asyncio.ensure_future(
+ coro_or_future=self._store_status(
+ cluster_id=cluster_id,
+ kdu_instance=kdu_instance,
+ namespace=instance_info["namespace"],
+ db_dict=db_dict,
+ operation="upgrade",
+ run_once=False,
+ )
+ )
+
+ # wait for execution task
+ await asyncio.wait([exec_task])
+
+ # cancel status task
+ status_task.cancel()
+ output, rc = exec_task.result()
+
+ else:
+
+ output, rc = await self._local_async_exec(
+ command=command, raise_exception_on_error=False, env=env
+ )
+
+ # remove temporal values yaml file
+ if file_to_delete:
+ os.remove(file_to_delete)
+
+ # write final status
+ await self._store_status(
+ cluster_id=cluster_id,
+ kdu_instance=kdu_instance,
+ namespace=instance_info["namespace"],
+ db_dict=db_dict,
+ operation="upgrade",
+ run_once=True,
+ check_every=0,
+ )
+
+ if rc != 0:
+ msg = "Error executing command: {}\nOutput: {}".format(command, output)
+ self.log.error(msg)
+ raise K8sException(msg)
+
+ # sync fs
+ self.fs.reverse_sync(from_path=cluster_id)
+
+ # return new revision number
+ instance = await self.get_instance_info(
+ cluster_uuid=cluster_uuid, kdu_instance=kdu_instance
+ )
+ if instance:
+ revision = int(instance.get("revision"))
+ self.log.debug("New revision: {}".format(revision))
+ return revision
+ else:
+ return 0
+
+ async def rollback(
+ self, cluster_uuid: str, kdu_instance: str, revision=0, db_dict: dict = None
+ ):
+
+ _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
+ self.log.debug(
+ "rollback kdu_instance {} to revision {} from cluster {}".format(
+ kdu_instance, revision, cluster_id
+ )
+ )
+
+ # sync local dir
+ self.fs.sync(from_path=cluster_id)
+
+ # look for instance to obtain namespace
+ instance_info = await self.get_instance_info(cluster_uuid, kdu_instance)
+ if not instance_info:
+ raise K8sException("kdu_instance {} not found".format(kdu_instance))
+
+ # init env, paths
+ paths, env = self._init_paths_env(
+ cluster_name=cluster_id, create_if_not_exist=True
+ )
+
+ command = self._get_rollback_command(kdu_instance, instance_info["namespace"],
+ revision)
+
+ self.log.debug("rolling_back: {}".format(command))
+
+ # exec helm in a task
+ exec_task = asyncio.ensure_future(
+ coro_or_future=self._local_async_exec(
+ command=command, raise_exception_on_error=False, env=env
+ )
+ )
+ # write status in another task
+ status_task = asyncio.ensure_future(
+ coro_or_future=self._store_status(
+ cluster_id=cluster_id,
+ kdu_instance=kdu_instance,
+ namespace=instance_info["namespace"],
+ db_dict=db_dict,
+ operation="rollback",
+ run_once=False,
+ )
+ )
+
+ # wait for execution task
+ await asyncio.wait([exec_task])
+
+ # cancel status task
+ status_task.cancel()
+
+ output, rc = exec_task.result()
+
+ # write final status
+ await self._store_status(
+ cluster_id=cluster_id,
+ kdu_instance=kdu_instance,
+ namespace=instance_info["namespace"],
+ db_dict=db_dict,
+ operation="rollback",
+ run_once=True,
+ check_every=0,
+ )
+
+ if rc != 0:
+ msg = "Error executing command: {}\nOutput: {}".format(command, output)
+ self.log.error(msg)
+ raise K8sException(msg)
+
+ # sync fs
+ self.fs.reverse_sync(from_path=cluster_id)
+
+ # return new revision number
+ instance = await self.get_instance_info(
+ cluster_uuid=cluster_uuid, kdu_instance=kdu_instance
+ )
+ if instance:
+ revision = int(instance.get("revision"))
+ self.log.debug("New revision: {}".format(revision))
+ return revision
+ else:
+ return 0
+
+ async def uninstall(self, cluster_uuid: str, kdu_instance: str):
+ """
+ Removes an existing KDU instance. It would implicitly use the `delete` or 'uninstall' call
+ (this call should happen after all _terminate-config-primitive_ of the VNF
+ are invoked).
+
+ :param cluster_uuid: UUID of a K8s cluster known by OSM, or namespace:cluster_id
+ :param kdu_instance: unique name for the KDU instance to be deleted
+ :return: True if successful
+ """
+
+ _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
+ self.log.debug(
+ "uninstall kdu_instance {} from cluster {}".format(
+ kdu_instance, cluster_id
+ )
+ )
+
+ # sync local dir
+ self.fs.sync(from_path=cluster_id)
+
+ # look for instance to obtain namespace
+ instance_info = await self.get_instance_info(cluster_uuid, kdu_instance)
+ if not instance_info:
+ raise K8sException("kdu_instance {} not found".format(kdu_instance))
+
+ # init env, paths
+ paths, env = self._init_paths_env(
+ cluster_name=cluster_id, create_if_not_exist=True
+ )
+
+ command = self._get_uninstall_command(kdu_instance, instance_info["namespace"])
+ output, _rc = await self._local_async_exec(
+ command=command, raise_exception_on_error=True, env=env
+ )
+
+ # sync fs
+ self.fs.reverse_sync(from_path=cluster_id)
+
+ return self._output_to_table(output)
+
+ async def instances_list(self, cluster_uuid: str) -> list:
+ """
+ returns a list of deployed releases in a cluster
+
+ :param cluster_uuid: the 'cluster' or 'namespace:cluster'
+ :return:
+ """
+
+ _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
+ self.log.debug("list releases for cluster {}".format(cluster_id))
+
+ # sync local dir
+ self.fs.sync(from_path=cluster_id)
+
+ # execute internal command
+ result = await self._instances_list(cluster_id)
+
+ # sync fs
+ self.fs.reverse_sync(from_path=cluster_id)
+
+ return result
+
+ async def get_instance_info(self, cluster_uuid: str, kdu_instance: str):
+ instances = await self.instances_list(cluster_uuid=cluster_uuid)
+ for instance in instances:
+ if instance.get("name") == kdu_instance:
+ return instance
+ self.log.debug("Instance {} not found".format(kdu_instance))
+ return None
+
+ async def exec_primitive(
+ self,
+ cluster_uuid: str = None,
+ kdu_instance: str = None,
+ primitive_name: str = None,
+ timeout: float = 300,
+ params: dict = None,
+ db_dict: dict = None,
+ ) -> str:
+ """Exec primitive (Juju action)
+
+ :param cluster_uuid: The UUID of the cluster or namespace:cluster
+ :param kdu_instance: The unique name of the KDU instance
+ :param primitive_name: Name of action that will be executed
+ :param timeout: Timeout for action execution
+ :param params: Dictionary of all the parameters needed for the action
+ :db_dict: Dictionary for any additional data
+
+ :return: Returns the output of the action
+ """
+ raise K8sException(
+ "KDUs deployed with Helm don't support actions "
+ "different from rollback, upgrade and status"
+ )
+
+ async def get_services(self,
+ cluster_uuid: str,
+ kdu_instance: str,
+ namespace: str) -> list:
+ """
+ Returns a list of services defined for the specified kdu instance.
+
+ :param cluster_uuid: UUID of a K8s cluster known by OSM
+ :param kdu_instance: unique name for the KDU instance
+ :param namespace: K8s namespace used by the KDU instance
+ :return: If successful, it will return a list of services, Each service
+ can have the following data:
+ - `name` of the service
+ - `type` type of service in the k8 cluster
+ - `ports` List of ports offered by the service, for each port includes at least
+ name, port, protocol
+ - `cluster_ip` Internal ip to be used inside k8s cluster
+ - `external_ip` List of external ips (in case they are available)
+ """
+
+ _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
+ self.log.debug(
+ "get_services: cluster_uuid: {}, kdu_instance: {}".format(
+ cluster_uuid, kdu_instance
+ )
+ )
+
+ # sync local dir
+ self.fs.sync(from_path=cluster_id)
+
+ # get list of services names for kdu
+ service_names = await self._get_services(cluster_id, kdu_instance, namespace)
+
+ service_list = []
+ for service in service_names:
+ service = await self._get_service(cluster_id, service, namespace)
+ service_list.append(service)
+
+ # sync fs
+ self.fs.reverse_sync(from_path=cluster_id)
+
+ return service_list
+
+ async def get_service(self,
+ cluster_uuid: str,
+ service_name: str,
+ namespace: str) -> object:
+
+ self.log.debug(
+ "get service, service_name: {}, namespace: {}, cluster_uuid: {}".format(
+ service_name, namespace, cluster_uuid)
+ )
+
+ _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
+
+ # sync local dir
+ self.fs.sync(from_path=cluster_id)
+
+ service = await self._get_service(cluster_id, service_name, namespace)
+
+ # sync fs
+ self.fs.reverse_sync(from_path=cluster_id)
+
+ return service
+
+ async def status_kdu(self, cluster_uuid: str, kdu_instance: str) -> str:
+
+ self.log.debug(
+ "status_kdu: cluster_uuid: {}, kdu_instance: {}".format(
+ cluster_uuid, kdu_instance
+ )
+ )
+
+ _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
+
+ # sync local dir
+ self.fs.sync(from_path=cluster_id)
+
+ # get instance: needed to obtain namespace
+ instances = await self._instances_list(cluster_id=cluster_id)
+ for instance in instances:
+ if instance.get("name") == kdu_instance:
+ break
+ else:
+ # instance does not exist
+ raise K8sException("Instance name: {} not found in cluster: {}".format(
+ kdu_instance, cluster_id))
+
+ status = await self._status_kdu(
+ cluster_id=cluster_id,
+ kdu_instance=kdu_instance,
+ namespace=instance["namespace"],
+ show_error_log=True,
+ return_text=True,
+ )
+
+ # sync fs
+ self.fs.reverse_sync(from_path=cluster_id)
+
+ return status
+
+ async def values_kdu(self, kdu_model: str, repo_url: str = None) -> str:
+
+ self.log.debug(
+ "inspect kdu_model values {} from (optional) repo: {}".format(
+ kdu_model, repo_url
+ )
+ )
+
+ return await self._exec_inspect_comand(
+ inspect_command="values", kdu_model=kdu_model, repo_url=repo_url
+ )
+
+ async def help_kdu(self, kdu_model: str, repo_url: str = None) -> str:
+
+ self.log.debug(
+ "inspect kdu_model {} readme.md from repo: {}".format(kdu_model, repo_url)
+ )
+
+ return await self._exec_inspect_comand(
+ inspect_command="readme", kdu_model=kdu_model, repo_url=repo_url
+ )
+
+ async def synchronize_repos(self, cluster_uuid: str):
+
+ self.log.debug("synchronize repos for cluster helm-id: {}".format(cluster_uuid))
+ try:
+ db_repo_ids = self._get_helm_chart_repos_ids(cluster_uuid)
+ db_repo_dict = self._get_db_repos_dict(db_repo_ids)
+
+ local_repo_list = await self.repo_list(cluster_uuid)
+ local_repo_dict = {repo["name"]: repo["url"] for repo in local_repo_list}
+
+ deleted_repo_list = []
+ added_repo_dict = {}
+
+ # iterate over the list of repos in the database that should be
+ # added if not present
+ for repo_name, db_repo in db_repo_dict.items():
+ try:
+ # check if it is already present
+ curr_repo_url = local_repo_dict.get(db_repo["name"])
+ repo_id = db_repo.get("_id")
+ if curr_repo_url != db_repo["url"]:
+ if curr_repo_url:
+ self.log.debug("repo {} url changed, delete and and again".format(
+ db_repo["url"]))
+ await self.repo_remove(cluster_uuid, db_repo["name"])
+ deleted_repo_list.append(repo_id)
+
+ # add repo
+ self.log.debug("add repo {}".format(db_repo["name"]))
+ await self.repo_add(cluster_uuid, db_repo["name"], db_repo["url"])
+ added_repo_dict[repo_id] = db_repo["name"]
+ except Exception as e:
+ raise K8sException(
+ "Error adding repo id: {}, err_msg: {} ".format(
+ repo_id, repr(e)
+ )
+ )
+
+ # Delete repos that are present but not in nbi_list
+ for repo_name in local_repo_dict:
+ if not db_repo_dict.get(repo_name) and repo_name != "stable":
+ self.log.debug("delete repo {}".format(repo_name))
+ try:
+ await self.repo_remove(cluster_uuid, repo_name)
+ deleted_repo_list.append(repo_name)
+ except Exception as e:
+ self.warning(
+ "Error deleting repo, name: {}, err_msg: {}".format(
+ repo_name, str(e)
+ )
+ )
+
+ return deleted_repo_list, added_repo_dict
+
+ except K8sException:
+ raise
+ except Exception as e:
+ # Do not raise errors synchronizing repos
+ self.log.error("Error synchronizing repos: {}".format(e))
+ raise Exception("Error synchronizing repos: {}".format(e))
+
+ def _get_helm_chart_repos_ids(self, cluster_uuid) -> list:
+ repo_ids = []
+ cluster_filter = {"_admin.helm-chart.id": cluster_uuid}
+ cluster = self.db.get_one("k8sclusters", cluster_filter)
+ if cluster:
+ repo_ids = cluster.get("_admin").get("helm_chart_repos") or []
+ return repo_ids
+ else:
+ raise K8sException(
+ "k8cluster with helm-id : {} not found".format(cluster_uuid)
+ )
+
+ def _get_db_repos_dict(self, repo_ids: list):
+ db_repos_dict = {}
+ for repo_id in repo_ids:
+ db_repo = self.db.get_one("k8srepos", {"_id": repo_id})
+ db_repos_dict[db_repo["name"]] = db_repo
+ return db_repos_dict
+
+ """
+ ####################################################################################
+ ################################### TO BE IMPLEMENTED SUBCLASSES ###################
+ ####################################################################################
+ """
+
+ @abc.abstractmethod
+ def _init_paths_env(self, cluster_name: str, create_if_not_exist: bool = True):
+ """
+ Creates and returns base cluster and kube dirs and returns them.
+ Also created helm3 dirs according to new directory specification, paths are
+ not returned but assigned to helm environment variables
+
+ :param cluster_name: cluster_name
+ :return: Dictionary with config_paths and dictionary with helm environment variables
+ """
+
+ @abc.abstractmethod
+ async def _cluster_init(self, cluster_id, namespace, paths, env):
+ """
+ Implements the helm version dependent cluster initialization
+ """
+
+ @abc.abstractmethod
+ async def _instances_list(self, cluster_id):
+ """
+ Implements the helm version dependent helm instances list
+ """
+
+ @abc.abstractmethod
+ async def _get_services(self, cluster_id, kdu_instance, namespace):
+ """
+ Implements the helm version dependent method to obtain services from a helm instance
+ """
+
+ @abc.abstractmethod
+ async def _status_kdu(self, cluster_id: str, kdu_instance: str, namespace: str = None,
+ show_error_log: bool = False, return_text: bool = False):
+ """
+ Implements the helm version dependent method to obtain status of a helm instance
+ """
+
+ @abc.abstractmethod
+ def _get_install_command(self, kdu_model, kdu_instance, namespace,
+ params_str, version, atomic, timeout) -> str:
+ """
+ Obtain command to be executed to delete the indicated instance
+ """
+
+ @abc.abstractmethod
+ def _get_upgrade_command(self, kdu_model, kdu_instance, namespace,
+ params_str, version, atomic, timeout) -> str:
+ """
+ Obtain command to be executed to upgrade the indicated instance
+ """
+
+ @abc.abstractmethod
+ def _get_rollback_command(self, kdu_instance, namespace, revision) -> str:
+ """
+ Obtain command to be executed to rollback the indicated instance
+ """
+
+ @abc.abstractmethod
+ def _get_uninstall_command(self, kdu_instance: str, namespace: str) -> str:
+ """
+ Obtain command to be executed to delete the indicated instance
+ """
+
+ @abc.abstractmethod
+ def _get_inspect_command(self, show_command: str, kdu_model: str, repo_str: str,
+ version: str):
+ """
+ Obtain command to be executed to obtain information about the kdu
+ """
+
+ @abc.abstractmethod
+ async def _uninstall_sw(self, cluster_id: str, namespace: str):
+ """
+ Method call to uninstall cluster software for helm. This method is dependent
+ of helm version
+ For Helm v2 it will be called when Tiller must be uninstalled
+ For Helm v3 it does nothing and does not need to be callled
+ """
+
+ """
+ ####################################################################################
+ ################################### P R I V A T E ##################################
+ ####################################################################################
+ """
+
+ @staticmethod
+ def _check_file_exists(filename: str, exception_if_not_exists: bool = False):
+ if os.path.exists(filename):
+ return True
+ else:
+ msg = "File {} does not exist".format(filename)
+ if exception_if_not_exists:
+ raise K8sException(msg)
+
+ @staticmethod
+ def _remove_multiple_spaces(strobj):
+ strobj = strobj.strip()
+ while " " in strobj:
+ strobj = strobj.replace(" ", " ")
+ return strobj
+
+ @staticmethod
+ def _output_to_lines(output: str) -> list:
+ output_lines = list()
+ lines = output.splitlines(keepends=False)
+ for line in lines:
+ line = line.strip()
+ if len(line) > 0:
+ output_lines.append(line)
+ return output_lines
+
+ @staticmethod
+ def _output_to_table(output: str) -> list:
+ output_table = list()
+ lines = output.splitlines(keepends=False)
+ for line in lines:
+ line = line.replace("\t", " ")
+ line_list = list()
+ output_table.append(line_list)
+ cells = line.split(sep=" ")
+ for cell in cells:
+ cell = cell.strip()
+ if len(cell) > 0:
+ line_list.append(cell)
+ return output_table
+
+ @staticmethod
+ def _parse_services(output: str) -> list:
+ lines = output.splitlines(keepends=False)
+ services = []
+ for line in lines:
+ line = line.replace("\t", " ")
+ cells = line.split(sep=" ")
+ if len(cells) > 0 and cells[0].startswith("service/"):
+ elems = cells[0].split(sep="/")
+ if len(elems) > 1:
+ services.append(elems[1])
+ return services
+
+ @staticmethod
+ def _get_deep(dictionary: dict, members: tuple):
+ target = dictionary
+ value = None
+ try:
+ for m in members:
+ value = target.get(m)
+ if not value:
+ return None
+ else:
+ target = value
+ except Exception:
+ pass
+ return value
+
+ # find key:value in several lines
+ @staticmethod
+ def _find_in_lines(p_lines: list, p_key: str) -> str:
+ for line in p_lines:
+ try:
+ if line.startswith(p_key + ":"):
+ parts = line.split(":")
+ the_value = parts[1].strip()
+ return the_value
+ except Exception:
+ # ignore it
+ pass
+ return None
+
+ @staticmethod
+ def _lower_keys_list(input_list: list):
+ """
+ Transform the keys in a list of dictionaries to lower case and returns a new list
+ of dictionaries
+ """
+ new_list = []
+ for dictionary in input_list:
+ new_dict = dict((k.lower(), v) for k, v in dictionary.items())
+ new_list.append(new_dict)
+ return new_list
+
+ def _local_exec(self, command: str) -> (str, int):
+ command = self._remove_multiple_spaces(command)
+ self.log.debug("Executing sync local command: {}".format(command))
+ # raise exception if fails
+ output = ""
+ try:
+ output = subprocess.check_output(
+ command, shell=True, universal_newlines=True
+ )
+ return_code = 0
+ self.log.debug(output)
+ except Exception:
+ return_code = 1
+
+ return output, return_code
+
+ async def _local_async_exec(
+ self,
+ command: str,
+ raise_exception_on_error: bool = False,
+ show_error_log: bool = True,
+ encode_utf8: bool = False,
+ env: dict = None
+ ) -> (str, int):
+
+ command = K8sHelmBaseConnector._remove_multiple_spaces(command)
+ self.log.debug("Executing async local command: {}, env: {}".format(command, env))
+
+ # split command
+ command = shlex.split(command)
+
+ environ = os.environ.copy()
+ if env:
+ environ.update(env)
+
+ try:
+ process = await asyncio.create_subprocess_exec(
+ *command, stdout=asyncio.subprocess.PIPE, stderr=asyncio.subprocess.PIPE,
+ env=environ
+ )
+
+ # wait for command terminate
+ stdout, stderr = await process.communicate()
+
+ return_code = process.returncode
+
+ output = ""
+ if stdout:
+ output = stdout.decode("utf-8").strip()
+ # output = stdout.decode()
+ if stderr:
+ output = stderr.decode("utf-8").strip()
+ # output = stderr.decode()
+
+ if return_code != 0 and show_error_log:
+ self.log.debug(
+ "Return code (FAIL): {}\nOutput:\n{}".format(return_code, output)
+ )
+ else:
+ self.log.debug("Return code: {}".format(return_code))
+
+ if raise_exception_on_error and return_code != 0:
+ raise K8sException(output)
+
+ if encode_utf8:
+ output = output.encode("utf-8").strip()
+ output = str(output).replace("\\n", "\n")
+
+ return output, return_code
+
+ except asyncio.CancelledError:
+ raise
+ except K8sException:
+ raise
+ except Exception as e:
+ msg = "Exception executing command: {} -> {}".format(command, e)
+ self.log.error(msg)
+ if raise_exception_on_error:
+ raise K8sException(e) from e
+ else:
+ return "", -1
+
+ async def _local_async_exec_pipe(self,
+ command1: str,
+ command2: str,
+ raise_exception_on_error: bool = True,
+ show_error_log: bool = True,
+ encode_utf8: bool = False,
+ env: dict = None):
+
+ command1 = K8sHelmBaseConnector._remove_multiple_spaces(command1)
+ command2 = K8sHelmBaseConnector._remove_multiple_spaces(command2)
+ command = "{} | {}".format(command1, command2)
+ self.log.debug("Executing async local command: {}, env: {}".format(command, env))
+
+ # split command
+ command1 = shlex.split(command1)
+ command2 = shlex.split(command2)
+
+ environ = os.environ.copy()
+ if env:
+ environ.update(env)
+
+ try:
+ read, write = os.pipe()
+ await asyncio.create_subprocess_exec(*command1, stdout=write, env=environ)
+ os.close(write)
+ process_2 = await asyncio.create_subprocess_exec(*command2, stdin=read,
+ stdout=asyncio.subprocess.PIPE,
+ env=environ)
+ os.close(read)
+ stdout, stderr = await process_2.communicate()
+
+ return_code = process_2.returncode
+
+ output = ""
+ if stdout:
+ output = stdout.decode("utf-8").strip()
+ # output = stdout.decode()
+ if stderr:
+ output = stderr.decode("utf-8").strip()
+ # output = stderr.decode()
+
+ if return_code != 0 and show_error_log:
+ self.log.debug(
+ "Return code (FAIL): {}\nOutput:\n{}".format(return_code, output)
+ )
+ else:
+ self.log.debug("Return code: {}".format(return_code))
+
+ if raise_exception_on_error and return_code != 0:
+ raise K8sException(output)
+
+ if encode_utf8:
+ output = output.encode("utf-8").strip()
+ output = str(output).replace("\\n", "\n")
+
+ return output, return_code
+ except asyncio.CancelledError:
+ raise
+ except K8sException:
+ raise
+ except Exception as e:
+ msg = "Exception executing command: {} -> {}".format(command, e)
+ self.log.error(msg)
+ if raise_exception_on_error:
+ raise K8sException(e) from e
+ else:
+ return "", -1
+
+ async def _get_service(self, cluster_id, service_name, namespace):
+ """
+ Obtains the data of the specified service in the k8cluster.
+
+ :param cluster_id: id of a K8s cluster known by OSM
+ :param service_name: name of the K8s service in the specified namespace
+ :param namespace: K8s namespace used by the KDU instance
+ :return: If successful, it will return a service with the following data:
+ - `name` of the service
+ - `type` type of service in the k8 cluster
+ - `ports` List of ports offered by the service, for each port includes at least
+ name, port, protocol
+ - `cluster_ip` Internal ip to be used inside k8s cluster
+ - `external_ip` List of external ips (in case they are available)
+ """
+
+ # init config, env
+ paths, env = self._init_paths_env(
+ cluster_name=cluster_id, create_if_not_exist=True
+ )
+
+ command = "{} --kubeconfig={} --namespace={} get service {} -o=yaml".format(
+ self.kubectl_command, paths["kube_config"], namespace, service_name
+ )
+
+ output, _rc = await self._local_async_exec(
+ command=command, raise_exception_on_error=True, env=env
+ )
+
+ data = yaml.load(output, Loader=yaml.SafeLoader)
+
+ service = {
+ "name": service_name,
+ "type": self._get_deep(data, ("spec", "type")),
+ "ports": self._get_deep(data, ("spec", "ports")),
+ "cluster_ip": self._get_deep(data, ("spec", "clusterIP"))
+ }
+ if service["type"] == "LoadBalancer":
+ ip_map_list = self._get_deep(data, ("status", "loadBalancer", "ingress"))
+ ip_list = [elem["ip"] for elem in ip_map_list]
+ service["external_ip"] = ip_list
+
+ return service
+
+ async def _exec_inspect_comand(
+ self, inspect_command: str, kdu_model: str, repo_url: str = None
+ ):
+ """
+ Obtains information about a kdu, no cluster (no env)
+ """
+
+ repo_str = ""
+ if repo_url:
+ repo_str = " --repo {}".format(repo_url)
+
+ idx = kdu_model.find("/")
+ if idx >= 0:
+ idx += 1
+ kdu_model = kdu_model[idx:]
+
+ version = ""
+ if ":" in kdu_model:
+ parts = kdu_model.split(sep=":")
+ if len(parts) == 2:
+ version = "--version {}".format(str(parts[1]))
+ kdu_model = parts[0]
+
+ full_command = self._get_inspect_command(inspect_command, kdu_model, repo_str, version)
+ output, _rc = await self._local_async_exec(
+ command=full_command, encode_utf8=True
+ )
+
+ return output
+
+ async def _store_status(
+ self,
+ cluster_id: str,
+ operation: str,
+ kdu_instance: str,
+ namespace: str = None,
+ check_every: float = 10,
+ db_dict: dict = None,
+ run_once: bool = False,
+ ):
+ while True:
+ try:
+ await asyncio.sleep(check_every)
+ detailed_status = await self._status_kdu(
+ cluster_id=cluster_id, kdu_instance=kdu_instance, namespace=namespace,
+ return_text=False
+ )
+ status = detailed_status.get("info").get("description")
+ self.log.debug('KDU {} STATUS: {}.'.format(kdu_instance, status))
+ # write status to db
+ result = await self.write_app_status_to_db(
+ db_dict=db_dict,
+ status=str(status),
+ detailed_status=str(detailed_status),
+ operation=operation,
+ )
+ if not result:
+ self.log.info("Error writing in database. Task exiting...")
+ return
+ except asyncio.CancelledError:
+ self.log.debug("Task cancelled")
+ return
+ except Exception as e:
+ self.log.debug("_store_status exception: {}".format(str(e)), exc_info=True)
+ pass
+ finally:
+ if run_once:
+ return
+
+ # params for use in -f file
+ # returns values file option and filename (in order to delete it at the end)
+ def _params_to_file_option(self, cluster_id: str, params: dict) -> (str, str):
+
+ if params and len(params) > 0:
+ self._init_paths_env(
+ cluster_name=cluster_id, create_if_not_exist=True
+ )
+
+ def get_random_number():
+ r = random.randrange(start=1, stop=99999999)
+ s = str(r)
+ while len(s) < 10:
+ s = "0" + s
+ return s
+
+ params2 = dict()
+ for key in params:
+ value = params.get(key)
+ if "!!yaml" in str(value):
+ value = yaml.load(value[7:])
+ params2[key] = value
+
+ values_file = get_random_number() + ".yaml"
+ with open(values_file, "w") as stream:
+ yaml.dump(params2, stream, indent=4, default_flow_style=False)
+
+ return "-f {}".format(values_file), values_file
+
+ return "", None
+
+ # params for use in --set option
+ @staticmethod
+ def _params_to_set_option(params: dict) -> str:
+ params_str = ""
+ if params and len(params) > 0:
+ start = True
+ for key in params:
+ value = params.get(key, None)
+ if value is not None:
+ if start:
+ params_str += "--set "
+ start = False
+ else:
+ params_str += ","
+ params_str += "{}={}".format(key, value)
+ return params_str
+
+ @staticmethod
+ def _generate_release_name(chart_name: str):
+ # check embeded chart (file or dir)
+ if chart_name.startswith("/"):
+ # extract file or directory name
+ chart_name = chart_name[chart_name.rfind("/") + 1:]
+ # check URL
+ elif "://" in chart_name:
+ # extract last portion of URL
+ chart_name = chart_name[chart_name.rfind("/") + 1:]
+
+ name = ""
+ for c in chart_name:
+ if c.isalpha() or c.isnumeric():
+ name += c
+ else:
+ name += "-"
+ if len(name) > 35:
+ name = name[0:35]
+
+ # if does not start with alpha character, prefix 'a'
+ if not name[0].isalpha():
+ name = "a" + name
+
+ name += "-"
+
+ def get_random_number():
+ r = random.randrange(start=1, stop=99999999)
+ s = str(r)
+ s = s.rjust(10, "0")
+ return s
+
+ name = name + get_random_number()
+ return name.lower()
projects / osm / N2VC.git / commitdiff