installers/charm/lcm/src/charm.py - osm/devops - Gitiles

 #!/usr/bin/env python3
 # Copyright 2021 Canonical Ltd.
 #
 # 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: legal@canonical.com
 #
 # To get in touch with the maintainers, please contact:
 # osm-charmers@lists.launchpad.net
 ##

 # pylint: disable=E0213


 import logging
 from typing import NoReturn, Optional


 from charms.kafka_k8s.v0.kafka import KafkaEvents, KafkaRequires
 from ops.main import main
 from opslib.osm.charm import CharmedOsmBase, RelationsMissing
 from opslib.osm.interfaces.http import HttpClient
 from opslib.osm.interfaces.mongo import MongoClient
 from opslib.osm.pod import ContainerV3Builder, PodRestartPolicy, PodSpecV3Builder
 from opslib.osm.validator import ModelValidator, validator


 logger = logging.getLogger(__name__)

 PORT = 9999


 class ConfigModel(ModelValidator):
     vca_host: Optional[str]
     vca_port: Optional[int]
     vca_user: Optional[str]
     vca_secret: Optional[str]
     vca_pubkey: Optional[str]
     vca_cacert: Optional[str]
     vca_cloud: Optional[str]
     vca_k8s_cloud: Optional[str]
     database_commonkey: str
     mongodb_uri: Optional[str]
     log_level: str
     vca_apiproxy: Optional[str]
     # Model-config options
     vca_model_config_agent_metadata_url: Optional[str]
     vca_model_config_agent_stream: Optional[str]
     vca_model_config_apt_ftp_proxy: Optional[str]
     vca_model_config_apt_http_proxy: Optional[str]
     vca_model_config_apt_https_proxy: Optional[str]
     vca_model_config_apt_mirror: Optional[str]
     vca_model_config_apt_no_proxy: Optional[str]
     vca_model_config_automatically_retry_hooks: Optional[bool]
     vca_model_config_backup_dir: Optional[str]
     vca_model_config_cloudinit_userdata: Optional[str]
     vca_model_config_container_image_metadata_url: Optional[str]
     vca_model_config_container_image_stream: Optional[str]
     vca_model_config_container_inherit_properties: Optional[str]
     vca_model_config_container_networking_method: Optional[str]
     vca_model_config_default_series: Optional[str]
     vca_model_config_default_space: Optional[str]
     vca_model_config_development: Optional[bool]
     vca_model_config_disable_network_management: Optional[bool]
     vca_model_config_egress_subnets: Optional[str]
     vca_model_config_enable_os_refresh_update: Optional[bool]
     vca_model_config_enable_os_upgrade: Optional[bool]
     vca_model_config_fan_config: Optional[str]
     vca_model_config_firewall_mode: Optional[str]
     vca_model_config_ftp_proxy: Optional[str]
     vca_model_config_http_proxy: Optional[str]
     vca_model_config_https_proxy: Optional[str]
     vca_model_config_ignore_machine_addresses: Optional[bool]
     vca_model_config_image_metadata_url: Optional[str]
     vca_model_config_image_stream: Optional[str]
     vca_model_config_juju_ftp_proxy: Optional[str]
     vca_model_config_juju_http_proxy: Optional[str]
     vca_model_config_juju_https_proxy: Optional[str]
     vca_model_config_juju_no_proxy: Optional[str]
     vca_model_config_logforward_enabled: Optional[bool]
     vca_model_config_logging_config: Optional[str]
     vca_model_config_lxd_snap_channel: Optional[str]
     vca_model_config_max_action_results_age: Optional[str]
     vca_model_config_max_action_results_size: Optional[str]
     vca_model_config_max_status_history_age: Optional[str]
     vca_model_config_max_status_history_size: Optional[str]
     vca_model_config_net_bond_reconfigure_delay: Optional[str]
     vca_model_config_no_proxy: Optional[str]
     vca_model_config_provisioner_harvest_mode: Optional[str]
     vca_model_config_proxy_ssh: Optional[bool]
     vca_model_config_snap_http_proxy: Optional[str]
     vca_model_config_snap_https_proxy: Optional[str]
     vca_model_config_snap_store_assertions: Optional[str]
     vca_model_config_snap_store_proxy: Optional[str]
     vca_model_config_snap_store_proxy_url: Optional[str]
     vca_model_config_ssl_hostname_verification: Optional[bool]
     vca_model_config_test_mode: Optional[bool]
     vca_model_config_transmit_vendor_metrics: Optional[bool]
     vca_model_config_update_status_hook_interval: Optional[str]
     vca_stablerepourl: Optional[str]
     vca_helm_ca_certs: Optional[str]
     image_pull_policy: str
     debug_mode: bool
     security_context: bool

     @validator("log_level")
     def validate_log_level(cls, v):
         if v not in {"INFO", "DEBUG"}:
             raise ValueError("value must be INFO or DEBUG")
         return v

     @validator("mongodb_uri")
     def validate_mongodb_uri(cls, v):
         if v and not v.startswith("mongodb://"):
             raise ValueError("mongodb_uri is not properly formed")
         return v

     @validator("image_pull_policy")
     def validate_image_pull_policy(cls, v):
         values = {
             "always": "Always",
             "ifnotpresent": "IfNotPresent",
             "never": "Never",
         }
         v = v.lower()
         if v not in values.keys():
             raise ValueError("value must be always, ifnotpresent or never")
         return values[v]


 class LcmCharm(CharmedOsmBase):

     on = KafkaEvents()

     def __init__(self, *args) -> NoReturn:
         super().__init__(
             *args,
             oci_image="image",
             vscode_workspace=VSCODE_WORKSPACE,
         )
         if self.config.get("debug_mode"):
             self.enable_debug_mode(
                 pubkey=self.config.get("debug_pubkey"),
                 hostpaths={
                     "LCM": {
                         "hostpath": self.config.get("debug_lcm_local_path"),
                         "container-path": "/usr/lib/python3/dist-packages/osm_lcm",
                     },
                     "N2VC": {
                         "hostpath": self.config.get("debug_n2vc_local_path"),
                         "container-path": "/usr/lib/python3/dist-packages/n2vc",
                     },
                     "osm_common": {
                         "hostpath": self.config.get("debug_common_local_path"),
                         "container-path": "/usr/lib/python3/dist-packages/osm_common",
                     },
                 },
             )
         self.kafka = KafkaRequires(self)
         self.framework.observe(self.on.kafka_available, self.configure_pod)
         self.framework.observe(self.on.kafka_broken, self.configure_pod)

         self.mongodb_client = MongoClient(self, "mongodb")
         self.framework.observe(self.on["mongodb"].relation_changed, self.configure_pod)
         self.framework.observe(self.on["mongodb"].relation_broken, self.configure_pod)

         self.ro_client = HttpClient(self, "ro")
         self.framework.observe(self.on["ro"].relation_changed, self.configure_pod)
         self.framework.observe(self.on["ro"].relation_broken, self.configure_pod)

     def _check_missing_dependencies(self, config: ConfigModel):
         missing_relations = []

         if not self.kafka.host or not self.kafka.port:
             missing_relations.append("kafka")
         if not config.mongodb_uri and self.mongodb_client.is_missing_data_in_unit():
             missing_relations.append("mongodb")
         if self.ro_client.is_missing_data_in_app():
             missing_relations.append("ro")

         if missing_relations:
             raise RelationsMissing(missing_relations)

     def build_pod_spec(self, image_info):
         # Validate config
         config = ConfigModel(**dict(self.config))

         if config.mongodb_uri and not self.mongodb_client.is_missing_data_in_unit():
             raise Exception("Mongodb data cannot be provided via config and relation")

         # Check relations
         self._check_missing_dependencies(config)

         security_context_enabled = (
             config.security_context if not config.debug_mode else False
         )

         # Create Builder for the PodSpec
         pod_spec_builder = PodSpecV3Builder(
             enable_security_context=security_context_enabled
         )

         # Add secrets to the pod
         mongodb_secret_name = f"{self.app.name}-mongodb-secret"
         pod_spec_builder.add_secret(
             mongodb_secret_name,
             {
                 "uri": config.mongodb_uri or self.mongodb_client.connection_string,
                 "commonkey": config.database_commonkey,
                 "helm_ca_certs": config.vca_helm_ca_certs,
             },
         )

         # Build Container
         container_builder = ContainerV3Builder(
             self.app.name,
             image_info,
             config.image_pull_policy,
             run_as_non_root=security_context_enabled,
         )
         container_builder.add_port(name=self.app.name, port=PORT)
         container_builder.add_envs(
             {
                 # General configuration
                 "ALLOW_ANONYMOUS_LOGIN": "yes",
                 "OSMLCM_GLOBAL_LOGLEVEL": config.log_level,
                 # RO configuration
                 "OSMLCM_RO_HOST": self.ro_client.host,
                 "OSMLCM_RO_PORT": self.ro_client.port,
                 "OSMLCM_RO_TENANT": "osm",
                 # Kafka configuration
                 "OSMLCM_MESSAGE_DRIVER": "kafka",
                 "OSMLCM_MESSAGE_HOST": self.kafka.host,
                 "OSMLCM_MESSAGE_PORT": self.kafka.port,
                 # Database configuration
                 "OSMLCM_DATABASE_DRIVER": "mongo",
                 # Storage configuration
                 "OSMLCM_STORAGE_DRIVER": "mongo",
                 "OSMLCM_STORAGE_PATH": "/app/storage",
                 "OSMLCM_STORAGE_COLLECTION": "files",
                 "OSMLCM_VCA_STABLEREPOURL": config.vca_stablerepourl,
             }
         )
         container_builder.add_secret_envs(
             secret_name=mongodb_secret_name,
             envs={
                 "OSMLCM_DATABASE_URI": "uri",
                 "OSMLCM_DATABASE_COMMONKEY": "commonkey",
                 "OSMLCM_STORAGE_URI": "uri",
                 "OSMLCM_VCA_HELM_CA_CERTS": "helm_ca_certs",
             },
         )
         if config.vca_host:
             vca_secret_name = f"{self.app.name}-vca-secret"
             pod_spec_builder.add_secret(
                 vca_secret_name,
                 {
                     "host": config.vca_host,
                     "port": str(config.vca_port),
                     "user": config.vca_user,
                     "pubkey": config.vca_pubkey,
                     "secret": config.vca_secret,
                     "cacert": config.vca_cacert,
                     "cloud": config.vca_cloud,
                     "k8s_cloud": config.vca_k8s_cloud,
                 },
             )
             container_builder.add_secret_envs(
                 secret_name=vca_secret_name,
                 envs={
                     # VCA configuration
                     "OSMLCM_VCA_HOST": "host",
                     "OSMLCM_VCA_PORT": "port",
                     "OSMLCM_VCA_USER": "user",
                     "OSMLCM_VCA_PUBKEY": "pubkey",
                     "OSMLCM_VCA_SECRET": "secret",
                     "OSMLCM_VCA_CACERT": "cacert",
                     "OSMLCM_VCA_CLOUD": "cloud",
                     "OSMLCM_VCA_K8S_CLOUD": "k8s_cloud",
                 },
             )
             if config.vca_apiproxy:
                 container_builder.add_env("OSMLCM_VCA_APIPROXY", config.vca_apiproxy)

             model_config_envs = {
                 f"OSMLCM_{k.upper()}": v
                 for k, v in self.config.items()
                 if k.startswith("vca_model_config")
             }
             if model_config_envs:
                 container_builder.add_envs(model_config_envs)
         container = container_builder.build()

         # Add container to pod spec
         pod_spec_builder.add_container(container)

         # Add restart policy
         restart_policy = PodRestartPolicy()
         restart_policy.add_secrets()
         pod_spec_builder.set_restart_policy(restart_policy)

         return pod_spec_builder.build()


 VSCODE_WORKSPACE = {
     "folders": [
         {"path": "/usr/lib/python3/dist-packages/osm_lcm"},
         {"path": "/usr/lib/python3/dist-packages/n2vc"},
         {"path": "/usr/lib/python3/dist-packages/osm_common"},
     ],
     "settings": {},
     "launch": {
         "version": "0.2.0",
         "configurations": [
             {
                 "name": "LCM",
                 "type": "python",
                 "request": "launch",
                 "module": "osm_lcm.lcm",
                 "justMyCode": False,
             }
         ],
     },
 }


 if __name__ == "__main__":
     main(LcmCharm)


 # class ConfigurePodEvent(EventBase):
 #     """Configure Pod event"""

 #     pass


 # class LcmEvents(CharmEvents):
 #     """LCM Events"""

 #     configure_pod = EventSource(ConfigurePodEvent)


 # class LcmCharm(CharmBase):
 #     """LCM Charm."""

 #     state = StoredState()
 #     on = LcmEvents()

 #     def __init__(self, *args) -> NoReturn:
 #         """LCM Charm constructor."""
 #         super().__init__(*args)

 #         # Internal state initialization
 #         self.state.set_default(pod_spec=None)

 #         # Message bus data initialization
 #         self.state.set_default(message_host=None)
 #         self.state.set_default(message_port=None)

 #         # Database data initialization
 #         self.state.set_default(database_uri=None)

 #         # RO data initialization
 #         self.state.set_default(ro_host=None)
 #         self.state.set_default(ro_port=None)

 #         self.port = LCM_PORT
 #         self.image = OCIImageResource(self, "image")

 #         # Registering regular events
 #         self.framework.observe(self.on.start, self.configure_pod)
 #         self.framework.observe(self.on.config_changed, self.configure_pod)
 #         self.framework.observe(self.on.upgrade_charm, self.configure_pod)

 #         # Registering custom internal events
 #         self.framework.observe(self.on.configure_pod, self.configure_pod)

 #         # Registering required relation events
 #         self.framework.observe(
 #             self.on.kafka_relation_changed, self._on_kafka_relation_changed
 #         )
 #         self.framework.observe(
 #             self.on.mongodb_relation_changed, self._on_mongodb_relation_changed
 #         )
 #         self.framework.observe(
 #             self.on.ro_relation_changed, self._on_ro_relation_changed
 #         )

 #         # Registering required relation broken events
 #         self.framework.observe(
 #             self.on.kafka_relation_broken, self._on_kafka_relation_broken
 #         )
 #         self.framework.observe(
 #             self.on.mongodb_relation_broken, self._on_mongodb_relation_broken
 #         )
 #         self.framework.observe(
 #             self.on.ro_relation_broken, self._on_ro_relation_broken
 #         )

 #     def _on_kafka_relation_changed(self, event: EventBase) -> NoReturn:
 #         """Reads information about the kafka relation.

 #         Args:
 #             event (EventBase): Kafka relation event.
 #         """
 #         message_host = event.relation.data[event.unit].get("host")
 #         message_port = event.relation.data[event.unit].get("port")

 #         if (
 #             message_host
 #             and message_port
 #             and (
 #                 self.state.message_host != message_host
 #                 or self.state.message_port != message_port
 #             )
 #         ):
 #             self.state.message_host = message_host
 #             self.state.message_port = message_port
 #             self.on.configure_pod.emit()

 #     def _on_kafka_relation_broken(self, event: EventBase) -> NoReturn:
 #         """Clears data from kafka relation.

 #         Args:
 #             event (EventBase): Kafka relation event.
 #         """
 #         self.state.message_host = None
 #         self.state.message_port = None
 #         self.on.configure_pod.emit()

 #     def _on_mongodb_relation_changed(self, event: EventBase) -> NoReturn:
 #         """Reads information about the DB relation.

 #         Args:
 #             event (EventBase): DB relation event.
 #         """
 #         database_uri = event.relation.data[event.unit].get("connection_string")

 #         if database_uri and self.state.database_uri != database_uri:
 #             self.state.database_uri = database_uri
 #             self.on.configure_pod.emit()

 #     def _on_mongodb_relation_broken(self, event: EventBase) -> NoReturn:
 #         """Clears data from mongodb relation.

 #         Args:
 #             event (EventBase): DB relation event.
 #         """
 #         self.state.database_uri = None
 #         self.on.configure_pod.emit()

 #     def _on_ro_relation_changed(self, event: EventBase) -> NoReturn:
 #         """Reads information about the RO relation.

 #         Args:
 #             event (EventBase): Keystone relation event.
 #         """
 #         ro_host = event.relation.data[event.unit].get("host")
 #         ro_port = event.relation.data[event.unit].get("port")

 #         if (
 #             ro_host
 #             and ro_port
 #             and (self.state.ro_host != ro_host or self.state.ro_port != ro_port)
 #         ):
 #             self.state.ro_host = ro_host
 #             self.state.ro_port = ro_port
 #             self.on.configure_pod.emit()

 #     def _on_ro_relation_broken(self, event: EventBase) -> NoReturn:
 #         """Clears data from ro relation.

 #         Args:
 #             event (EventBase): Keystone relation event.
 #         """
 #         self.state.ro_host = None
 #         self.state.ro_port = None
 #         self.on.configure_pod.emit()

 #     def _missing_relations(self) -> str:
 #         """Checks if there missing relations.

 #         Returns:
 #             str: string with missing relations
 #         """
 #         data_status = {
 #             "kafka": self.state.message_host,
 #             "mongodb": self.state.database_uri,
 #             "ro": self.state.ro_host,
 #         }

 #         missing_relations = [k for k, v in data_status.items() if not v]

 #         return ", ".join(missing_relations)

 #     @property
 #     def relation_state(self) -> Dict[str, Any]:
 #         """Collects relation state configuration for pod spec assembly.

 #         Returns:
 #             Dict[str, Any]: relation state information.
 #         """
 #         relation_state = {
 #             "message_host": self.state.message_host,
 #             "message_port": self.state.message_port,
 #             "database_uri": self.state.database_uri,
 #             "ro_host": self.state.ro_host,
 #             "ro_port": self.state.ro_port,
 #         }

 #         return relation_state

 #     def configure_pod(self, event: EventBase) -> NoReturn:
 #         """Assemble the pod spec and apply it, if possible.

 #         Args:
 #             event (EventBase): Hook or Relation event that started the
 #                                function.
 #         """
 #         if missing := self._missing_relations():
 #             self.unit.status = BlockedStatus(
 #                 "Waiting for {0} relation{1}".format(
 #                     missing, "s" if "," in missing else ""
 #                 )
 #             )
 #             return

 #         if not self.unit.is_leader():
 #             self.unit.status = ActiveStatus("ready")
 #             return

 #         self.unit.status = MaintenanceStatus("Assembling pod spec")

 #         # Fetch image information
 #         try:
 #             self.unit.status = MaintenanceStatus("Fetching image information")
 #             image_info = self.image.fetch()
 #         except OCIImageResourceError:
 #             self.unit.status = BlockedStatus("Error fetching image information")
 #             return

 #         try:
 #             pod_spec = make_pod_spec(
 #                 image_info,
 #                 self.model.config,
 #                 self.relation_state,
 #                 self.model.app.name,
 #                 self.port,
 #             )
 #         except ValueError as exc:
 #             logger.exception("Config/Relation data validation error")
 #             self.unit.status = BlockedStatus(str(exc))
 #             return

 #         if self.state.pod_spec != pod_spec:
 #             self.model.pod.set_spec(pod_spec)
 #             self.state.pod_spec = pod_spec

 #         self.unit.status = ActiveStatus("ready")


 # if __name__ == "__main__":
 #     main(LcmCharm)
	#!/usr/bin/env python3
	# Copyright 2021 Canonical Ltd.
	#
	# 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: legal@canonical.com
	#
	# To get in touch with the maintainers, please contact:
	# osm-charmers@lists.launchpad.net
	##

	# pylint: disable=E0213


	import logging
	from typing import NoReturn, Optional


	from charms.kafka_k8s.v0.kafka import KafkaEvents, KafkaRequires
	from ops.main import main
	from opslib.osm.charm import CharmedOsmBase, RelationsMissing
	from opslib.osm.interfaces.http import HttpClient
	from opslib.osm.interfaces.mongo import MongoClient
	from opslib.osm.pod import ContainerV3Builder, PodRestartPolicy, PodSpecV3Builder
	from opslib.osm.validator import ModelValidator, validator


	logger = logging.getLogger(__name__)

	PORT = 9999


	class ConfigModel(ModelValidator):
	vca_host: Optional[str]
	vca_port: Optional[int]
	vca_user: Optional[str]
	vca_secret: Optional[str]
	vca_pubkey: Optional[str]
	vca_cacert: Optional[str]
	vca_cloud: Optional[str]
	vca_k8s_cloud: Optional[str]
	database_commonkey: str
	mongodb_uri: Optional[str]
	log_level: str
	vca_apiproxy: Optional[str]
	# Model-config options
	vca_model_config_agent_metadata_url: Optional[str]
	vca_model_config_agent_stream: Optional[str]
	vca_model_config_apt_ftp_proxy: Optional[str]
	vca_model_config_apt_http_proxy: Optional[str]
	vca_model_config_apt_https_proxy: Optional[str]
	vca_model_config_apt_mirror: Optional[str]
	vca_model_config_apt_no_proxy: Optional[str]
	vca_model_config_automatically_retry_hooks: Optional[bool]
	vca_model_config_backup_dir: Optional[str]
	vca_model_config_cloudinit_userdata: Optional[str]
	vca_model_config_container_image_metadata_url: Optional[str]
	vca_model_config_container_image_stream: Optional[str]
	vca_model_config_container_inherit_properties: Optional[str]
	vca_model_config_container_networking_method: Optional[str]
	vca_model_config_default_series: Optional[str]
	vca_model_config_default_space: Optional[str]
	vca_model_config_development: Optional[bool]
	vca_model_config_disable_network_management: Optional[bool]
	vca_model_config_egress_subnets: Optional[str]
	vca_model_config_enable_os_refresh_update: Optional[bool]
	vca_model_config_enable_os_upgrade: Optional[bool]
	vca_model_config_fan_config: Optional[str]
	vca_model_config_firewall_mode: Optional[str]
	vca_model_config_ftp_proxy: Optional[str]
	vca_model_config_http_proxy: Optional[str]
	vca_model_config_https_proxy: Optional[str]
	vca_model_config_ignore_machine_addresses: Optional[bool]
	vca_model_config_image_metadata_url: Optional[str]
	vca_model_config_image_stream: Optional[str]
	vca_model_config_juju_ftp_proxy: Optional[str]
	vca_model_config_juju_http_proxy: Optional[str]
	vca_model_config_juju_https_proxy: Optional[str]
	vca_model_config_juju_no_proxy: Optional[str]
	vca_model_config_logforward_enabled: Optional[bool]
	vca_model_config_logging_config: Optional[str]
	vca_model_config_lxd_snap_channel: Optional[str]
	vca_model_config_max_action_results_age: Optional[str]
	vca_model_config_max_action_results_size: Optional[str]
	vca_model_config_max_status_history_age: Optional[str]
	vca_model_config_max_status_history_size: Optional[str]
	vca_model_config_net_bond_reconfigure_delay: Optional[str]
	vca_model_config_no_proxy: Optional[str]
	vca_model_config_provisioner_harvest_mode: Optional[str]
	vca_model_config_proxy_ssh: Optional[bool]
	vca_model_config_snap_http_proxy: Optional[str]
	vca_model_config_snap_https_proxy: Optional[str]
	vca_model_config_snap_store_assertions: Optional[str]
	vca_model_config_snap_store_proxy: Optional[str]
	vca_model_config_snap_store_proxy_url: Optional[str]
	vca_model_config_ssl_hostname_verification: Optional[bool]
	vca_model_config_test_mode: Optional[bool]
	vca_model_config_transmit_vendor_metrics: Optional[bool]
	vca_model_config_update_status_hook_interval: Optional[str]
	vca_stablerepourl: Optional[str]
	vca_helm_ca_certs: Optional[str]
	image_pull_policy: str
	debug_mode: bool
	security_context: bool

	@validator("log_level")
	def validate_log_level(cls, v):
	if v not in {"INFO", "DEBUG"}:
	raise ValueError("value must be INFO or DEBUG")
	return v

	@validator("mongodb_uri")
	def validate_mongodb_uri(cls, v):
	if v and not v.startswith("mongodb://"):
	raise ValueError("mongodb_uri is not properly formed")
	return v

	@validator("image_pull_policy")
	def validate_image_pull_policy(cls, v):
	values = {
	"always": "Always",
	"ifnotpresent": "IfNotPresent",
	"never": "Never",
	}
	v = v.lower()
	if v not in values.keys():
	raise ValueError("value must be always, ifnotpresent or never")
	return values[v]


	class LcmCharm(CharmedOsmBase):

	on = KafkaEvents()

	def __init__(self, *args) -> NoReturn:
	super().__init__(
	*args,
	oci_image="image",
	vscode_workspace=VSCODE_WORKSPACE,
	)
	if self.config.get("debug_mode"):
	self.enable_debug_mode(
	pubkey=self.config.get("debug_pubkey"),
	hostpaths={
	"LCM": {
	"hostpath": self.config.get("debug_lcm_local_path"),
	"container-path": "/usr/lib/python3/dist-packages/osm_lcm",
	},
	"N2VC": {
	"hostpath": self.config.get("debug_n2vc_local_path"),
	"container-path": "/usr/lib/python3/dist-packages/n2vc",
	},
	"osm_common": {
	"hostpath": self.config.get("debug_common_local_path"),
	"container-path": "/usr/lib/python3/dist-packages/osm_common",
	},
	},
	)
	self.kafka = KafkaRequires(self)
	self.framework.observe(self.on.kafka_available, self.configure_pod)
	self.framework.observe(self.on.kafka_broken, self.configure_pod)

	self.mongodb_client = MongoClient(self, "mongodb")
	self.framework.observe(self.on["mongodb"].relation_changed, self.configure_pod)
	self.framework.observe(self.on["mongodb"].relation_broken, self.configure_pod)

	self.ro_client = HttpClient(self, "ro")
	self.framework.observe(self.on["ro"].relation_changed, self.configure_pod)
	self.framework.observe(self.on["ro"].relation_broken, self.configure_pod)

	def _check_missing_dependencies(self, config: ConfigModel):
	missing_relations = []

	if not self.kafka.host or not self.kafka.port:
	missing_relations.append("kafka")
	if not config.mongodb_uri and self.mongodb_client.is_missing_data_in_unit():
	missing_relations.append("mongodb")
	if self.ro_client.is_missing_data_in_app():
	missing_relations.append("ro")

	if missing_relations:
	raise RelationsMissing(missing_relations)

	def build_pod_spec(self, image_info):
	# Validate config
	config = ConfigModel(**dict(self.config))

	if config.mongodb_uri and not self.mongodb_client.is_missing_data_in_unit():
	raise Exception("Mongodb data cannot be provided via config and relation")

	# Check relations
	self._check_missing_dependencies(config)

	security_context_enabled = (
	config.security_context if not config.debug_mode else False
	)

	# Create Builder for the PodSpec
	pod_spec_builder = PodSpecV3Builder(
	enable_security_context=security_context_enabled
	)

	# Add secrets to the pod
	mongodb_secret_name = f"{self.app.name}-mongodb-secret"
	pod_spec_builder.add_secret(
	mongodb_secret_name,
	{
	"uri": config.mongodb_uri or self.mongodb_client.connection_string,
	"commonkey": config.database_commonkey,
	"helm_ca_certs": config.vca_helm_ca_certs,
	},
	)

	# Build Container
	container_builder = ContainerV3Builder(
	self.app.name,
	image_info,
	config.image_pull_policy,
	run_as_non_root=security_context_enabled,
	)
	container_builder.add_port(name=self.app.name, port=PORT)
	container_builder.add_envs(
	{
	# General configuration
	"ALLOW_ANONYMOUS_LOGIN": "yes",
	"OSMLCM_GLOBAL_LOGLEVEL": config.log_level,
	# RO configuration
	"OSMLCM_RO_HOST": self.ro_client.host,
	"OSMLCM_RO_PORT": self.ro_client.port,
	"OSMLCM_RO_TENANT": "osm",
	# Kafka configuration
	"OSMLCM_MESSAGE_DRIVER": "kafka",
	"OSMLCM_MESSAGE_HOST": self.kafka.host,
	"OSMLCM_MESSAGE_PORT": self.kafka.port,
	# Database configuration
	"OSMLCM_DATABASE_DRIVER": "mongo",
	# Storage configuration
	"OSMLCM_STORAGE_DRIVER": "mongo",
	"OSMLCM_STORAGE_PATH": "/app/storage",
	"OSMLCM_STORAGE_COLLECTION": "files",
	"OSMLCM_VCA_STABLEREPOURL": config.vca_stablerepourl,
	}
	)
	container_builder.add_secret_envs(
	secret_name=mongodb_secret_name,
	envs={
	"OSMLCM_DATABASE_URI": "uri",
	"OSMLCM_DATABASE_COMMONKEY": "commonkey",
	"OSMLCM_STORAGE_URI": "uri",
	"OSMLCM_VCA_HELM_CA_CERTS": "helm_ca_certs",
	},
	)
	if config.vca_host:
	vca_secret_name = f"{self.app.name}-vca-secret"
	pod_spec_builder.add_secret(
	vca_secret_name,
	{
	"host": config.vca_host,
	"port": str(config.vca_port),
	"user": config.vca_user,
	"pubkey": config.vca_pubkey,
	"secret": config.vca_secret,
	"cacert": config.vca_cacert,
	"cloud": config.vca_cloud,
	"k8s_cloud": config.vca_k8s_cloud,
	},
	)
	container_builder.add_secret_envs(
	secret_name=vca_secret_name,
	envs={
	# VCA configuration
	"OSMLCM_VCA_HOST": "host",
	"OSMLCM_VCA_PORT": "port",
	"OSMLCM_VCA_USER": "user",
	"OSMLCM_VCA_PUBKEY": "pubkey",
	"OSMLCM_VCA_SECRET": "secret",
	"OSMLCM_VCA_CACERT": "cacert",
	"OSMLCM_VCA_CLOUD": "cloud",
	"OSMLCM_VCA_K8S_CLOUD": "k8s_cloud",
	},
	)
	if config.vca_apiproxy:
	container_builder.add_env("OSMLCM_VCA_APIPROXY", config.vca_apiproxy)

	model_config_envs = {
	f"OSMLCM_{k.upper()}": v
	for k, v in self.config.items()
	if k.startswith("vca_model_config")
	}
	if model_config_envs:
	container_builder.add_envs(model_config_envs)
	container = container_builder.build()

	# Add container to pod spec
	pod_spec_builder.add_container(container)

	# Add restart policy
	restart_policy = PodRestartPolicy()
	restart_policy.add_secrets()
	pod_spec_builder.set_restart_policy(restart_policy)

	return pod_spec_builder.build()


	VSCODE_WORKSPACE = {
	"folders": [
	{"path": "/usr/lib/python3/dist-packages/osm_lcm"},
	{"path": "/usr/lib/python3/dist-packages/n2vc"},
	{"path": "/usr/lib/python3/dist-packages/osm_common"},
	],
	"settings": {},
	"launch": {
	"version": "0.2.0",
	"configurations": [
	{
	"name": "LCM",
	"type": "python",
	"request": "launch",
	"module": "osm_lcm.lcm",
	"justMyCode": False,
	}
	],
	},
	}


	if __name__ == "__main__":
	main(LcmCharm)


	# class ConfigurePodEvent(EventBase):
	# """Configure Pod event"""

	# pass


	# class LcmEvents(CharmEvents):
	# """LCM Events"""

	# configure_pod = EventSource(ConfigurePodEvent)


	# class LcmCharm(CharmBase):
	# """LCM Charm."""

	# state = StoredState()
	# on = LcmEvents()

	# def __init__(self, *args) -> NoReturn:
	# """LCM Charm constructor."""
	# super().__init__(*args)

	# # Internal state initialization
	# self.state.set_default(pod_spec=None)

	# # Message bus data initialization
	# self.state.set_default(message_host=None)
	# self.state.set_default(message_port=None)

	# # Database data initialization
	# self.state.set_default(database_uri=None)

	# # RO data initialization
	# self.state.set_default(ro_host=None)
	# self.state.set_default(ro_port=None)

	# self.port = LCM_PORT
	# self.image = OCIImageResource(self, "image")

	# # Registering regular events
	# self.framework.observe(self.on.start, self.configure_pod)
	# self.framework.observe(self.on.config_changed, self.configure_pod)
	# self.framework.observe(self.on.upgrade_charm, self.configure_pod)

	# # Registering custom internal events
	# self.framework.observe(self.on.configure_pod, self.configure_pod)

	# # Registering required relation events
	# self.framework.observe(
	# self.on.kafka_relation_changed, self._on_kafka_relation_changed
	# )
	# self.framework.observe(
	# self.on.mongodb_relation_changed, self._on_mongodb_relation_changed
	# )
	# self.framework.observe(
	# self.on.ro_relation_changed, self._on_ro_relation_changed
	# )

	# # Registering required relation broken events
	# self.framework.observe(
	# self.on.kafka_relation_broken, self._on_kafka_relation_broken
	# )
	# self.framework.observe(
	# self.on.mongodb_relation_broken, self._on_mongodb_relation_broken
	# )
	# self.framework.observe(
	# self.on.ro_relation_broken, self._on_ro_relation_broken
	# )

	# def _on_kafka_relation_changed(self, event: EventBase) -> NoReturn:
	# """Reads information about the kafka relation.

	# Args:
	# event (EventBase): Kafka relation event.
	# """
	# message_host = event.relation.data[event.unit].get("host")
	# message_port = event.relation.data[event.unit].get("port")

	# if (
	# message_host
	# and message_port
	# and (
	# self.state.message_host != message_host
	# or self.state.message_port != message_port
	# )
	# ):
	# self.state.message_host = message_host
	# self.state.message_port = message_port
	# self.on.configure_pod.emit()

	# def _on_kafka_relation_broken(self, event: EventBase) -> NoReturn:
	# """Clears data from kafka relation.

	# Args:
	# event (EventBase): Kafka relation event.
	# """
	# self.state.message_host = None
	# self.state.message_port = None
	# self.on.configure_pod.emit()

	# def _on_mongodb_relation_changed(self, event: EventBase) -> NoReturn:
	# """Reads information about the DB relation.

	# Args:
	# event (EventBase): DB relation event.
	# """
	# database_uri = event.relation.data[event.unit].get("connection_string")

	# if database_uri and self.state.database_uri != database_uri:
	# self.state.database_uri = database_uri
	# self.on.configure_pod.emit()

	# def _on_mongodb_relation_broken(self, event: EventBase) -> NoReturn:
	# """Clears data from mongodb relation.

	# Args:
	# event (EventBase): DB relation event.
	# """
	# self.state.database_uri = None
	# self.on.configure_pod.emit()

	# def _on_ro_relation_changed(self, event: EventBase) -> NoReturn:
	# """Reads information about the RO relation.

	# Args:
	# event (EventBase): Keystone relation event.
	# """
	# ro_host = event.relation.data[event.unit].get("host")
	# ro_port = event.relation.data[event.unit].get("port")

	# if (
	# ro_host
	# and ro_port
	# and (self.state.ro_host != ro_host or self.state.ro_port != ro_port)
	# ):
	# self.state.ro_host = ro_host
	# self.state.ro_port = ro_port
	# self.on.configure_pod.emit()

	# def _on_ro_relation_broken(self, event: EventBase) -> NoReturn:
	# """Clears data from ro relation.

	# Args:
	# event (EventBase): Keystone relation event.
	# """
	# self.state.ro_host = None
	# self.state.ro_port = None
	# self.on.configure_pod.emit()

	# def _missing_relations(self) -> str:
	# """Checks if there missing relations.

	# Returns:
	# str: string with missing relations
	# """
	# data_status = {
	# "kafka": self.state.message_host,
	# "mongodb": self.state.database_uri,
	# "ro": self.state.ro_host,
	# }

	# missing_relations = [k for k, v in data_status.items() if not v]

	# return ", ".join(missing_relations)

	# @property
	# def relation_state(self) -> Dict[str, Any]:
	# """Collects relation state configuration for pod spec assembly.

	# Returns:
	# Dict[str, Any]: relation state information.
	# """
	# relation_state = {
	# "message_host": self.state.message_host,
	# "message_port": self.state.message_port,
	# "database_uri": self.state.database_uri,
	# "ro_host": self.state.ro_host,
	# "ro_port": self.state.ro_port,
	# }

	# return relation_state

	# def configure_pod(self, event: EventBase) -> NoReturn:
	# """Assemble the pod spec and apply it, if possible.

	# Args:
	# event (EventBase): Hook or Relation event that started the
	# function.
	# """
	# if missing := self._missing_relations():
	# self.unit.status = BlockedStatus(
	# "Waiting for {0} relation{1}".format(
	# missing, "s" if "," in missing else ""
	# )
	# )
	# return

	# if not self.unit.is_leader():
	# self.unit.status = ActiveStatus("ready")
	# return

	# self.unit.status = MaintenanceStatus("Assembling pod spec")

	# # Fetch image information
	# try:
	# self.unit.status = MaintenanceStatus("Fetching image information")
	# image_info = self.image.fetch()
	# except OCIImageResourceError:
	# self.unit.status = BlockedStatus("Error fetching image information")
	# return

	# try:
	# pod_spec = make_pod_spec(
	# image_info,
	# self.model.config,
	# self.relation_state,
	# self.model.app.name,
	# self.port,
	# )
	# except ValueError as exc:
	# logger.exception("Config/Relation data validation error")
	# self.unit.status = BlockedStatus(str(exc))
	# return

	# if self.state.pod_spec != pod_spec:
	# self.model.pod.set_spec(pod_spec)
	# self.state.pod_spec = pod_spec

	# self.unit.status = ActiveStatus("ready")


	# if __name__ == "__main__":
	# main(LcmCharm)