From: David Garcia Date: Thu, 16 Jun 2022 10:31:16 +0000 (+0200) Subject: Add Ng-UI sidecar charm X-Git-Tag: v12.0.0rc1~3 X-Git-Url: https://osm.etsi.org/gitweb/?a=commitdiff_plain;h=refs%2Fchanges%2F08%2F12208%2F2;p=osm%2Fdevops.git Add Ng-UI sidecar charm - Fix nbi interface type - Update Charm Libraries Change-Id: I93d00b240e0f8f127411677647e04813f9ca412b Signed-off-by: David Garcia --- diff --git a/installers/charm/osm-nbi/lib/charms/osm_libs/v0/utils.py b/installers/charm/osm-nbi/lib/charms/osm_libs/v0/utils.py index a0c23786..b7009c4b 100644 --- a/installers/charm/osm-nbi/lib/charms/osm_libs/v0/utils.py +++ b/installers/charm/osm-nbi/lib/charms/osm_libs/v0/utils.py @@ -136,7 +136,7 @@ LIBAPI = 0 # Increment this PATCH version before using `charmcraft publish-lib` or reset # to 0 if you are raising the major API version -LIBPATCH = 1 +LIBPATCH = 2 logger = logging.getLogger(__name__) @@ -164,14 +164,14 @@ def check_container_ready(container: Container) -> None: def check_service_active(container: Container, service_name: str) -> None: - """Check if the nbi service is running. + """Check if the service is running. Args: container (Container): Container to be checked. service_name (str): Name of the service to check. Raises: - CharmError: if nbi service is not running. + CharmError: if the service is not running. """ if service_name not in container.get_plan().services: raise CharmError(f"{service_name} service not configured yet", WaitingStatus) @@ -510,7 +510,7 @@ class DebugMode(Object): pod_ip: str, user: str = "root", workspace_path: str = "/debug.code-workspace", - ) -> None: + ) -> str: return f"code --remote ssh-remote+{user}@{pod_ip} {workspace_path}" def _restart(self): diff --git a/installers/charm/osm-nbi/lib/charms/osm_nbi/v0/nbi.py b/installers/charm/osm-nbi/lib/charms/osm_nbi/v0/nbi.py index 2def702a..130b6faa 100644 --- a/installers/charm/osm-nbi/lib/charms/osm_nbi/v0/nbi.py +++ b/installers/charm/osm-nbi/lib/charms/osm_nbi/v0/nbi.py @@ -119,13 +119,6 @@ class NbiRequires(Object): # pragma: no cover self.charm = charm self._endpoint_name = endpoint_name - # Observe relation events - event_observe_mapping = { - charm.on[self._endpoint_name].relation_changed: self._on_relation_changed, - } - for event, observer in event_observe_mapping.items(): - self.framework.observe(event, observer) - @property def host(self) -> str: """Get nbi hostname.""" diff --git a/installers/charm/osm-nbi/metadata.yaml b/installers/charm/osm-nbi/metadata.yaml index 2c8ce50e..7da2b4b6 100644 --- a/installers/charm/osm-nbi/metadata.yaml +++ b/installers/charm/osm-nbi/metadata.yaml @@ -76,4 +76,4 @@ requires: provides: nbi: - interface: http + interface: nbi diff --git a/installers/charm/osm-ng-ui/.gitignore b/installers/charm/osm-ng-ui/.gitignore new file mode 100644 index 00000000..87d0a587 --- /dev/null +++ b/installers/charm/osm-ng-ui/.gitignore @@ -0,0 +1,29 @@ +#!/usr/bin/env python3 +# Copyright 2022 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 +venv/ +build/ +*.charm +.tox/ +.coverage +coverage.xml +__pycache__/ +*.py[cod] +.vscode \ No newline at end of file diff --git a/installers/charm/osm-ng-ui/.jujuignore b/installers/charm/osm-ng-ui/.jujuignore new file mode 100644 index 00000000..17c7a8bb --- /dev/null +++ b/installers/charm/osm-ng-ui/.jujuignore @@ -0,0 +1,23 @@ +#!/usr/bin/env python3 +# Copyright 2022 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 +/venv +*.py[cod] +*.charm diff --git a/installers/charm/osm-ng-ui/CONTRIBUTING.md b/installers/charm/osm-ng-ui/CONTRIBUTING.md new file mode 100644 index 00000000..c08f76ae --- /dev/null +++ b/installers/charm/osm-ng-ui/CONTRIBUTING.md @@ -0,0 +1,78 @@ + + +# Contributing + +## Overview + +This documents explains the processes and practices recommended for contributing enhancements to +this operator. + +- Generally, before developing enhancements to this charm, you should consider [opening an issue + ](https://osm.etsi.org/bugzilla/enter_bug.cgi?product=OSM) explaining your use case. (Component=devops, version=master) +- If you would like to chat with us about your use-cases or proposed implementation, you can reach + us at [OSM Juju public channel](https://opensourcemano.slack.com/archives/C027KJGPECA). +- Familiarising yourself with the [Charmed Operator Framework](https://juju.is/docs/sdk) library + will help you a lot when working on new features or bug fixes. +- All enhancements require review before being merged. Code review typically examines + - code quality + - test coverage + - user experience for Juju administrators this charm. +- Please help us out in ensuring easy to review branches by rebasing your gerrit patch onto + the `master` branch. + +## Developing + +You can use the environments created by `tox` for development: + +```shell +tox --notest -e unit +source .tox/unit/bin/activate +``` + +### Testing + +```shell +tox -e fmt # update your code according to linting rules +tox -e lint # code style +tox -e unit # unit tests +tox -e integration # integration tests +tox # runs 'lint' and 'unit' environments +``` + +## Build charm + +Build the charm in this git repository using: + +```shell +charmcraft pack +``` + +### Deploy + +```bash +# Create a model +juju add-model dev +# Enable DEBUG logging +juju model-config logging-config="=INFO;unit=DEBUG" +# Deploy the charm +juju deploy ./osm-ng-ui_ubuntu-20.04-amd64.charm \ + --resource ng-ui-image=opensourcemano/ng-ui:testing-daily +``` diff --git a/installers/charm/osm-ng-ui/LICENSE b/installers/charm/osm-ng-ui/LICENSE new file mode 100644 index 00000000..7e9d5046 --- /dev/null +++ b/installers/charm/osm-ng-ui/LICENSE @@ -0,0 +1,202 @@ + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. 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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright 2022 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. diff --git a/installers/charm/osm-ng-ui/README.md b/installers/charm/osm-ng-ui/README.md new file mode 100644 index 00000000..20a6f767 --- /dev/null +++ b/installers/charm/osm-ng-ui/README.md @@ -0,0 +1,43 @@ + + + + +# OSM NBI + +Charmhub package name: osm-ng-ui +More information: https://charmhub.io/osm-ng-ui + +## Other resources + +* [Read more](https://osm.etsi.org/docs/user-guide/latest/) + +* [Contributing](https://osm.etsi.org/gitweb/?p=osm/devops.git;a=blob;f=installers/charm/osm-ng-ui/CONTRIBUTING.md) + +* See the [Juju SDK documentation](https://juju.is/docs/sdk) for more information about developing and improving charms. + diff --git a/installers/charm/osm-ng-ui/actions.yaml b/installers/charm/osm-ng-ui/actions.yaml new file mode 100644 index 00000000..6d52c053 --- /dev/null +++ b/installers/charm/osm-ng-ui/actions.yaml @@ -0,0 +1,23 @@ +# Copyright 2022 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 +# +# +# This file populates the Actions tab on Charmhub. +# See https://juju.is/docs/some-url-to-be-determined/ for a checklist and guidance. diff --git a/installers/charm/osm-ng-ui/charmcraft.yaml b/installers/charm/osm-ng-ui/charmcraft.yaml new file mode 100644 index 00000000..25ff5906 --- /dev/null +++ b/installers/charm/osm-ng-ui/charmcraft.yaml @@ -0,0 +1,34 @@ +# Copyright 2022 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 +# + +type: charm +bases: + - build-on: + - name: "ubuntu" + channel: "20.04" + run-on: + - name: "ubuntu" + channel: "20.04" + +parts: + charm: + build-packages: + - git diff --git a/installers/charm/osm-ng-ui/config.yaml b/installers/charm/osm-ng-ui/config.yaml new file mode 100644 index 00000000..31ffd845 --- /dev/null +++ b/installers/charm/osm-ng-ui/config.yaml @@ -0,0 +1,50 @@ +# Copyright 2022 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 +# +# +# This file populates the Configure tab on Charmhub. +# See https://juju.is/docs/some-url-to-be-determined/ for a checklist and guidance. + +options: + # Ingress options + external-hostname: + default: "" + description: | + The url that will be configured in the Kubernetes ingress. + + The easiest way of configuring the external-hostname without having the DNS setup is by using + a Wildcard DNS like nip.io constructing the url like so: + - ng-ui.127.0.0.1.nip.io (valid within the K8s cluster node) + - ng-ui..nip.io (valid from outside the K8s cluster node) + + This option is only applicable when the Kubernetes cluster has nginx ingress configured + and the charm is related to the nginx-ingress-integrator. + See more: https://charmhub.io/nginx-ingress-integrator + type: string + max-body-size: + default: 20 + description: Max allowed body-size (for file uploads) in megabytes, set to 0 to + disable limits. + source: default + type: int + value: 20 + tls-secret-name: + description: TLS secret name to use for ingress. + type: string diff --git a/installers/charm/osm-ng-ui/lib/charms/nginx_ingress_integrator/v0/ingress.py b/installers/charm/osm-ng-ui/lib/charms/nginx_ingress_integrator/v0/ingress.py new file mode 100644 index 00000000..be2d762b --- /dev/null +++ b/installers/charm/osm-ng-ui/lib/charms/nginx_ingress_integrator/v0/ingress.py @@ -0,0 +1,229 @@ +# See LICENSE file for licensing details. +# http://www.apache.org/licenses/LICENSE-2.0 +"""Library for the ingress relation. + +This library contains the Requires and Provides classes for handling +the ingress interface. + +Import `IngressRequires` in your charm, with two required options: + - "self" (the charm itself) + - config_dict + +`config_dict` accepts the following keys: + - service-hostname (required) + - service-name (required) + - service-port (required) + - additional-hostnames + - limit-rps + - limit-whitelist + - max-body-size + - owasp-modsecurity-crs + - path-routes + - retry-errors + - rewrite-enabled + - rewrite-target + - service-namespace + - session-cookie-max-age + - tls-secret-name + +See [the config section](https://charmhub.io/nginx-ingress-integrator/configure) for descriptions +of each, along with the required type. + +As an example, add the following to `src/charm.py`: +``` +from charms.nginx_ingress_integrator.v0.ingress import IngressRequires + +# In your charm's `__init__` method. +self.ingress = IngressRequires(self, {"service-hostname": self.config["external_hostname"], + "service-name": self.app.name, + "service-port": 80}) + +# In your charm's `config-changed` handler. +self.ingress.update_config({"service-hostname": self.config["external_hostname"]}) +``` +And then add the following to `metadata.yaml`: +``` +requires: + ingress: + interface: ingress +``` +You _must_ register the IngressRequires class as part of the `__init__` method +rather than, for instance, a config-changed event handler. This is because +doing so won't get the current relation changed event, because it wasn't +registered to handle the event (because it wasn't created in `__init__` when +the event was fired). +""" + +import logging + +from ops.charm import CharmEvents +from ops.framework import EventBase, EventSource, Object +from ops.model import BlockedStatus + +# The unique Charmhub library identifier, never change it +LIBID = "db0af4367506491c91663468fb5caa4c" + +# Increment this major API version when introducing breaking changes +LIBAPI = 0 + +# Increment this PATCH version before using `charmcraft publish-lib` or reset +# to 0 if you are raising the major API version +LIBPATCH = 10 + +logger = logging.getLogger(__name__) + +REQUIRED_INGRESS_RELATION_FIELDS = { + "service-hostname", + "service-name", + "service-port", +} + +OPTIONAL_INGRESS_RELATION_FIELDS = { + "additional-hostnames", + "limit-rps", + "limit-whitelist", + "max-body-size", + "owasp-modsecurity-crs", + "path-routes", + "retry-errors", + "rewrite-target", + "rewrite-enabled", + "service-namespace", + "session-cookie-max-age", + "tls-secret-name", +} + + +class IngressAvailableEvent(EventBase): + pass + + +class IngressBrokenEvent(EventBase): + pass + + +class IngressCharmEvents(CharmEvents): + """Custom charm events.""" + + ingress_available = EventSource(IngressAvailableEvent) + ingress_broken = EventSource(IngressBrokenEvent) + + +class IngressRequires(Object): + """This class defines the functionality for the 'requires' side of the 'ingress' relation. + + Hook events observed: + - relation-changed + """ + + def __init__(self, charm, config_dict): + super().__init__(charm, "ingress") + + self.framework.observe(charm.on["ingress"].relation_changed, self._on_relation_changed) + + self.config_dict = config_dict + + def _config_dict_errors(self, update_only=False): + """Check our config dict for errors.""" + blocked_message = "Error in ingress relation, check `juju debug-log`" + unknown = [ + x + for x in self.config_dict + if x not in REQUIRED_INGRESS_RELATION_FIELDS | OPTIONAL_INGRESS_RELATION_FIELDS + ] + if unknown: + logger.error( + "Ingress relation error, unknown key(s) in config dictionary found: %s", + ", ".join(unknown), + ) + self.model.unit.status = BlockedStatus(blocked_message) + return True + if not update_only: + missing = [x for x in REQUIRED_INGRESS_RELATION_FIELDS if x not in self.config_dict] + if missing: + logger.error( + "Ingress relation error, missing required key(s) in config dictionary: %s", + ", ".join(sorted(missing)), + ) + self.model.unit.status = BlockedStatus(blocked_message) + return True + return False + + def _on_relation_changed(self, event): + """Handle the relation-changed event.""" + # `self.unit` isn't available here, so use `self.model.unit`. + if self.model.unit.is_leader(): + if self._config_dict_errors(): + return + for key in self.config_dict: + event.relation.data[self.model.app][key] = str(self.config_dict[key]) + + def update_config(self, config_dict): + """Allow for updates to relation.""" + if self.model.unit.is_leader(): + self.config_dict = config_dict + if self._config_dict_errors(update_only=True): + return + relation = self.model.get_relation("ingress") + if relation: + for key in self.config_dict: + relation.data[self.model.app][key] = str(self.config_dict[key]) + + +class IngressProvides(Object): + """This class defines the functionality for the 'provides' side of the 'ingress' relation. + + Hook events observed: + - relation-changed + """ + + def __init__(self, charm): + super().__init__(charm, "ingress") + # Observe the relation-changed hook event and bind + # self.on_relation_changed() to handle the event. + self.framework.observe(charm.on["ingress"].relation_changed, self._on_relation_changed) + self.framework.observe(charm.on["ingress"].relation_broken, self._on_relation_broken) + self.charm = charm + + def _on_relation_changed(self, event): + """Handle a change to the ingress relation. + + Confirm we have the fields we expect to receive.""" + # `self.unit` isn't available here, so use `self.model.unit`. + if not self.model.unit.is_leader(): + return + + ingress_data = { + field: event.relation.data[event.app].get(field) + for field in REQUIRED_INGRESS_RELATION_FIELDS | OPTIONAL_INGRESS_RELATION_FIELDS + } + + missing_fields = sorted( + [ + field + for field in REQUIRED_INGRESS_RELATION_FIELDS + if ingress_data.get(field) is None + ] + ) + + if missing_fields: + logger.error( + "Missing required data fields for ingress relation: {}".format( + ", ".join(missing_fields) + ) + ) + self.model.unit.status = BlockedStatus( + "Missing fields for ingress: {}".format(", ".join(missing_fields)) + ) + + # Create an event that our charm can use to decide it's okay to + # configure the ingress. + self.charm.on.ingress_available.emit() + + def _on_relation_broken(self, _): + """Handle a relation-broken event in the ingress relation.""" + if not self.model.unit.is_leader(): + return + + # Create an event that our charm can use to remove the ingress resource. + self.charm.on.ingress_broken.emit() diff --git a/installers/charm/osm-ng-ui/lib/charms/observability_libs/v1/kubernetes_service_patch.py b/installers/charm/osm-ng-ui/lib/charms/observability_libs/v1/kubernetes_service_patch.py new file mode 100644 index 00000000..506dbf03 --- /dev/null +++ b/installers/charm/osm-ng-ui/lib/charms/observability_libs/v1/kubernetes_service_patch.py @@ -0,0 +1,291 @@ +# Copyright 2021 Canonical Ltd. +# See LICENSE file for licensing details. +# http://www.apache.org/licenses/LICENSE-2.0 + +"""# KubernetesServicePatch Library. + +This library is designed to enable developers to more simply patch the Kubernetes Service created +by Juju during the deployment of a sidecar charm. When sidecar charms are deployed, Juju creates a +service named after the application in the namespace (named after the Juju model). This service by +default contains a "placeholder" port, which is 65536/TCP. + +When modifying the default set of resources managed by Juju, one must consider the lifecycle of the +charm. In this case, any modifications to the default service (created during deployment), will be +overwritten during a charm upgrade. + +When initialised, this library binds a handler to the parent charm's `install` and `upgrade_charm` +events which applies the patch to the cluster. This should ensure that the service ports are +correct throughout the charm's life. + +The constructor simply takes a reference to the parent charm, and a list of +[`lightkube`](https://github.com/gtsystem/lightkube) ServicePorts that each define a port for the +service. For information regarding the `lightkube` `ServicePort` model, please visit the +`lightkube` [docs](https://gtsystem.github.io/lightkube-models/1.23/models/core_v1/#serviceport). + +Optionally, a name of the service (in case service name needs to be patched as well), labels, +selectors, and annotations can be provided as keyword arguments. + +## Getting Started + +To get started using the library, you just need to fetch the library using `charmcraft`. **Note +that you also need to add `lightkube` and `lightkube-models` to your charm's `requirements.txt`.** + +```shell +cd some-charm +charmcraft fetch-lib charms.observability_libs.v0.kubernetes_service_patch +echo <<-EOF >> requirements.txt +lightkube +lightkube-models +EOF +``` + +Then, to initialise the library: + +For `ClusterIP` services: + +```python +# ... +from charms.observability_libs.v0.kubernetes_service_patch import KubernetesServicePatch +from lightkube.models.core_v1 import ServicePort + +class SomeCharm(CharmBase): + def __init__(self, *args): + # ... + port = ServicePort(443, name=f"{self.app.name}") + self.service_patcher = KubernetesServicePatch(self, [port]) + # ... +``` + +For `LoadBalancer`/`NodePort` services: + +```python +# ... +from charms.observability_libs.v0.kubernetes_service_patch import KubernetesServicePatch +from lightkube.models.core_v1 import ServicePort + +class SomeCharm(CharmBase): + def __init__(self, *args): + # ... + port = ServicePort(443, name=f"{self.app.name}", targetPort=443, nodePort=30666) + self.service_patcher = KubernetesServicePatch( + self, [port], "LoadBalancer" + ) + # ... +``` + +Port protocols can also be specified. Valid protocols are `"TCP"`, `"UDP"`, and `"SCTP"` + +```python +# ... +from charms.observability_libs.v0.kubernetes_service_patch import KubernetesServicePatch +from lightkube.models.core_v1 import ServicePort + +class SomeCharm(CharmBase): + def __init__(self, *args): + # ... + tcp = ServicePort(443, name=f"{self.app.name}-tcp", protocol="TCP") + udp = ServicePort(443, name=f"{self.app.name}-udp", protocol="UDP") + sctp = ServicePort(443, name=f"{self.app.name}-sctp", protocol="SCTP") + self.service_patcher = KubernetesServicePatch(self, [tcp, udp, sctp]) + # ... +``` + +Additionally, you may wish to use mocks in your charm's unit testing to ensure that the library +does not try to make any API calls, or open any files during testing that are unlikely to be +present, and could break your tests. The easiest way to do this is during your test `setUp`: + +```python +# ... + +@patch("charm.KubernetesServicePatch", lambda x, y: None) +def setUp(self, *unused): + self.harness = Harness(SomeCharm) + # ... +``` +""" + +import logging +from types import MethodType +from typing import List, Literal + +from lightkube import ApiError, Client +from lightkube.models.core_v1 import ServicePort, ServiceSpec +from lightkube.models.meta_v1 import ObjectMeta +from lightkube.resources.core_v1 import Service +from lightkube.types import PatchType +from ops.charm import CharmBase +from ops.framework import Object + +logger = logging.getLogger(__name__) + +# The unique Charmhub library identifier, never change it +LIBID = "0042f86d0a874435adef581806cddbbb" + +# Increment this major API version when introducing breaking changes +LIBAPI = 1 + +# Increment this PATCH version before using `charmcraft publish-lib` or reset +# to 0 if you are raising the major API version +LIBPATCH = 1 + +ServiceType = Literal["ClusterIP", "LoadBalancer"] + + +class KubernetesServicePatch(Object): + """A utility for patching the Kubernetes service set up by Juju.""" + + def __init__( + self, + charm: CharmBase, + ports: List[ServicePort], + service_name: str = None, + service_type: ServiceType = "ClusterIP", + additional_labels: dict = None, + additional_selectors: dict = None, + additional_annotations: dict = None, + ): + """Constructor for KubernetesServicePatch. + + Args: + charm: the charm that is instantiating the library. + ports: a list of ServicePorts + service_name: allows setting custom name to the patched service. If none given, + application name will be used. + service_type: desired type of K8s service. Default value is in line with ServiceSpec's + default value. + additional_labels: Labels to be added to the kubernetes service (by default only + "app.kubernetes.io/name" is set to the service name) + additional_selectors: Selectors to be added to the kubernetes service (by default only + "app.kubernetes.io/name" is set to the service name) + additional_annotations: Annotations to be added to the kubernetes service. + """ + super().__init__(charm, "kubernetes-service-patch") + self.charm = charm + self.service_name = service_name if service_name else self._app + self.service = self._service_object( + ports, + service_name, + service_type, + additional_labels, + additional_selectors, + additional_annotations, + ) + + # Make mypy type checking happy that self._patch is a method + assert isinstance(self._patch, MethodType) + # Ensure this patch is applied during the 'install' and 'upgrade-charm' events + self.framework.observe(charm.on.install, self._patch) + self.framework.observe(charm.on.upgrade_charm, self._patch) + + def _service_object( + self, + ports: List[ServicePort], + service_name: str = None, + service_type: ServiceType = "ClusterIP", + additional_labels: dict = None, + additional_selectors: dict = None, + additional_annotations: dict = None, + ) -> Service: + """Creates a valid Service representation. + + Args: + ports: a list of ServicePorts + service_name: allows setting custom name to the patched service. If none given, + application name will be used. + service_type: desired type of K8s service. Default value is in line with ServiceSpec's + default value. + additional_labels: Labels to be added to the kubernetes service (by default only + "app.kubernetes.io/name" is set to the service name) + additional_selectors: Selectors to be added to the kubernetes service (by default only + "app.kubernetes.io/name" is set to the service name) + additional_annotations: Annotations to be added to the kubernetes service. + + Returns: + Service: A valid representation of a Kubernetes Service with the correct ports. + """ + if not service_name: + service_name = self._app + labels = {"app.kubernetes.io/name": self._app} + if additional_labels: + labels.update(additional_labels) + selector = {"app.kubernetes.io/name": self._app} + if additional_selectors: + selector.update(additional_selectors) + return Service( + apiVersion="v1", + kind="Service", + metadata=ObjectMeta( + namespace=self._namespace, + name=service_name, + labels=labels, + annotations=additional_annotations, # type: ignore[arg-type] + ), + spec=ServiceSpec( + selector=selector, + ports=ports, + type=service_type, + ), + ) + + def _patch(self, _) -> None: + """Patch the Kubernetes service created by Juju to map the correct port. + + Raises: + PatchFailed: if patching fails due to lack of permissions, or otherwise. + """ + if not self.charm.unit.is_leader(): + return + + client = Client() + try: + if self.service_name != self._app: + self._delete_and_create_service(client) + client.patch(Service, self.service_name, self.service, patch_type=PatchType.MERGE) + except ApiError as e: + if e.status.code == 403: + logger.error("Kubernetes service patch failed: `juju trust` this application.") + else: + logger.error("Kubernetes service patch failed: %s", str(e)) + else: + logger.info("Kubernetes service '%s' patched successfully", self._app) + + def _delete_and_create_service(self, client: Client): + service = client.get(Service, self._app, namespace=self._namespace) + service.metadata.name = self.service_name # type: ignore[attr-defined] + service.metadata.resourceVersion = service.metadata.uid = None # type: ignore[attr-defined] # noqa: E501 + client.delete(Service, self._app, namespace=self._namespace) + client.create(service) + + def is_patched(self) -> bool: + """Reports if the service patch has been applied. + + Returns: + bool: A boolean indicating if the service patch has been applied. + """ + client = Client() + # Get the relevant service from the cluster + service = client.get(Service, name=self.service_name, namespace=self._namespace) + # Construct a list of expected ports, should the patch be applied + expected_ports = [(p.port, p.targetPort) for p in self.service.spec.ports] + # Construct a list in the same manner, using the fetched service + fetched_ports = [(p.port, p.targetPort) for p in service.spec.ports] # type: ignore[attr-defined] # noqa: E501 + return expected_ports == fetched_ports + + @property + def _app(self) -> str: + """Name of the current Juju application. + + Returns: + str: A string containing the name of the current Juju application. + """ + return self.charm.app.name + + @property + def _namespace(self) -> str: + """The Kubernetes namespace we're running in. + + Returns: + str: A string containing the name of the current Kubernetes namespace. + """ + with open("/var/run/secrets/kubernetes.io/serviceaccount/namespace", "r") as f: + return f.read().strip() diff --git a/installers/charm/osm-ng-ui/lib/charms/osm_libs/v0/utils.py b/installers/charm/osm-ng-ui/lib/charms/osm_libs/v0/utils.py new file mode 100644 index 00000000..3feed7d7 --- /dev/null +++ b/installers/charm/osm-ng-ui/lib/charms/osm_libs/v0/utils.py @@ -0,0 +1,517 @@ +#!/usr/bin/env python3 +# Copyright 2022 Canonical Ltd. +# See LICENSE file for licensing details. +# http://www.apache.org/licenses/LICENSE-2.0 +"""OSM Utils Library. + +This library offers some utilities made for but not limited to Charmed OSM. + +# Getting started + +Execute the following command inside your Charmed Operator folder to fetch the library. + +```shell +charmcraft fetch-lib charms.osm_libs.v0.utils +``` + +# CharmError Exception + +An exception that takes to arguments, the message and the StatusBase class, which are useful +to set the status of the charm when the exception raises. + +Example: +```shell +from charms.osm_libs.v0.utils import CharmError + +class MyCharm(CharmBase): + def _on_config_changed(self, _): + try: + if not self.config.get("some-option"): + raise CharmError("need some-option", BlockedStatus) + + if not self.mysql_ready: + raise CharmError("waiting for mysql", WaitingStatus) + + # Do stuff... + + exception CharmError as e: + self.unit.status = e.status +``` + +# Pebble validations + +The `check_container_ready` function checks that a container is ready, +and therefore Pebble is ready. + +The `check_service_active` function checks that a service in a container is running. + +Both functions raise a CharmError if the validations fail. + +Example: +```shell +from charms.osm_libs.v0.utils import check_container_ready, check_service_active + +class MyCharm(CharmBase): + def _on_config_changed(self, _): + try: + container: Container = self.unit.get_container("my-container") + check_container_ready(container) + check_service_active(container, "my-service") + # Do stuff... + + exception CharmError as e: + self.unit.status = e.status +``` + +# Debug-mode + +The debug-mode allows OSM developers to easily debug OSM modules. + +Example: +```shell +from charms.osm_libs.v0.utils import DebugMode + +class MyCharm(CharmBase): + _stored = StoredState() + + def __init__(self, _): + # ... + container: Container = self.unit.get_container("my-container") + hostpaths = [ + HostPath( + config="module-hostpath", + container_path="/usr/lib/python3/dist-packages/module" + ), + ] + vscode_workspace_path = "files/vscode-workspace.json" + self.debug_mode = DebugMode( + self, + self._stored, + container, + hostpaths, + vscode_workspace_path, + ) + + def _on_update_status(self, _): + if self.debug_mode.started: + return + # ... + + def _get_debug_mode_information(self): + command = self.debug_mode.command + password = self.debug_mode.password + return command, password +``` + +# More + +- Get pod IP with `get_pod_ip()` +""" +import logging +import secrets +import socket +from pathlib import Path +from typing import List + +from lightkube import Client +from lightkube.models.core_v1 import HostPathVolumeSource, Volume, VolumeMount +from lightkube.resources.apps_v1 import StatefulSet +from ops.charm import CharmBase +from ops.framework import Object, StoredState +from ops.model import ( + ActiveStatus, + BlockedStatus, + Container, + MaintenanceStatus, + StatusBase, + WaitingStatus, +) +from ops.pebble import ServiceStatus + +# The unique Charmhub library identifier, never change it +LIBID = "e915908eebee4cdd972d484728adf984" + +# Increment this major API version when introducing breaking changes +LIBAPI = 0 + +# Increment this PATCH version before using `charmcraft publish-lib` or reset +# to 0 if you are raising the major API version +LIBPATCH = 1 + +logger = logging.getLogger(__name__) + + +class CharmError(Exception): + """Charm Error Exception.""" + + def __init__(self, message: str, status_class: StatusBase = BlockedStatus) -> None: + self.message = message + self.status_class = status_class + self.status = status_class(message) + + +def check_container_ready(container: Container) -> None: + """Check Pebble has started in the container. + + Args: + container (Container): Container to be checked. + + Raises: + CharmError: if container is not ready. + """ + if not container.can_connect(): + raise CharmError("waiting for pebble to start", MaintenanceStatus) + + +def check_service_active(container: Container, service_name: str) -> None: + """Check if the service is running. + + Args: + container (Container): Container to be checked. + service_name (str): Name of the service to check. + + Raises: + CharmError: if the service is not running. + """ + if service_name not in container.get_plan().services: + raise CharmError(f"{service_name} service not configured yet", WaitingStatus) + + if container.get_service(service_name).current != ServiceStatus.ACTIVE: + raise CharmError(f"{service_name} service is not running") + + +def get_pod_ip() -> str: + """Get Kubernetes Pod IP. + + Returns: + str: The IP of the Pod. + """ + return socket.gethostbyname(socket.gethostname()) + + +_DEBUG_SCRIPT = r"""#!/bin/bash +# Install SSH + +function download_code(){{ + wget https://go.microsoft.com/fwlink/?LinkID=760868 -O code.deb +}} + +function setup_envs(){{ + grep "source /debug.envs" /root/.bashrc || echo "source /debug.envs" | tee -a /root/.bashrc +}} +function setup_ssh(){{ + apt install ssh -y + cat /etc/ssh/sshd_config | + grep -E '^PermitRootLogin yes$$' || ( + echo PermitRootLogin yes | + tee -a /etc/ssh/sshd_config + ) + service ssh stop + sleep 3 + service ssh start + usermod --password $(echo {} | openssl passwd -1 -stdin) root +}} + +function setup_code(){{ + apt install libasound2 -y + (dpkg -i code.deb || apt-get install -f -y || apt-get install -f -y) && echo Code installed successfully + code --install-extension ms-python.python --user-data-dir /root + mkdir -p /root/.vscode-server + cp -R /root/.vscode/extensions /root/.vscode-server/extensions +}} + +export DEBIAN_FRONTEND=noninteractive +apt update && apt install wget -y +download_code & +setup_ssh & +setup_envs +wait +setup_code & +wait +""" + + +class HostPath: + """Represents a hostpath.""" + + def __init__(self, config: str, container_path: str) -> None: + mount_path_items = config.split("-") + mount_path_items.reverse() + self.mount_path = "/" + "/".join(mount_path_items) + self.config = config + self.container_path = container_path + self.module_name = container_path.split("/")[-1] + + +class DebugMode(Object): + """Class to handle the debug-mode.""" + + def __init__( + self, + charm: CharmBase, + stored: StoredState, + container: Container, + hostpaths: List[HostPath] = [], + vscode_workspace_path: str = "files/vscode-workspace.json", + ) -> None: + super().__init__(charm, "debug-mode") + + self.charm = charm + self._stored = stored + self.hostpaths = hostpaths + self.vscode_workspace = Path(vscode_workspace_path).read_text() + self.container = container + + self._stored.set_default( + debug_mode_started=False, + debug_mode_vscode_command=None, + debug_mode_password=None, + ) + + self.framework.observe(self.charm.on.config_changed, self._on_config_changed) + self.framework.observe(self.charm.on[container.name].pebble_ready, self._on_config_changed) + self.framework.observe(self.charm.on.update_status, self._on_update_status) + + def _on_config_changed(self, _) -> None: + """Handler for the config-changed event.""" + if not self.charm.unit.is_leader(): + return + + debug_mode_enabled = self.charm.config.get("debug-mode", False) + action = self.enable if debug_mode_enabled else self.disable + action() + + def _on_update_status(self, _) -> None: + """Handler for the update-status event.""" + if not self.charm.unit.is_leader() or not self.started: + return + + self.charm.unit.status = ActiveStatus("debug-mode: ready") + + @property + def started(self) -> bool: + """Indicates whether the debug-mode has started or not.""" + return self._stored.debug_mode_started + + @property + def command(self) -> str: + """Command to launch vscode.""" + return self._stored.debug_mode_vscode_command + + @property + def password(self) -> str: + """SSH password.""" + return self._stored.debug_mode_password + + def enable(self, service_name: str = None) -> None: + """Enable debug-mode. + + This function mounts hostpaths of the OSM modules (if set), and + configures the container so it can be easily debugged. The setup + includes the configuration of SSH, environment variables, and + VSCode workspace and plugins. + + Args: + service_name (str, optional): Pebble service name which has the desired environment + variables. Mandatory if there is more than one Pebble service configured. + """ + hostpaths_to_reconfigure = self._hostpaths_to_reconfigure() + if self.started and not hostpaths_to_reconfigure: + self.charm.unit.status = ActiveStatus("debug-mode: ready") + return + + logger.debug("enabling debug-mode") + + # Mount hostpaths if set. + # If hostpaths are mounted, the statefulset will be restarted, + # and for that reason we return immediately. On restart, the hostpaths + # won't be mounted and then we can continue and setup the debug-mode. + if hostpaths_to_reconfigure: + self.charm.unit.status = MaintenanceStatus("debug-mode: configuring hostpaths") + self._configure_hostpaths(hostpaths_to_reconfigure) + return + + self.charm.unit.status = MaintenanceStatus("debug-mode: starting") + password = secrets.token_hex(8) + self._setup_debug_mode( + password, + service_name, + mounted_hostpaths=[hp for hp in self.hostpaths if self.charm.config.get(hp.config)], + ) + + self._stored.debug_mode_vscode_command = self._get_vscode_command(get_pod_ip()) + self._stored.debug_mode_password = password + self._stored.debug_mode_started = True + logger.info("debug-mode is ready") + self.charm.unit.status = ActiveStatus("debug-mode: ready") + + def disable(self) -> None: + """Disable debug-mode.""" + logger.debug("disabling debug-mode") + current_status = self.charm.unit.status + hostpaths_unmounted = self._unmount_hostpaths() + + if not self._stored.debug_mode_started: + return + self._stored.debug_mode_started = False + self._stored.debug_mode_vscode_command = None + self._stored.debug_mode_password = None + + if not hostpaths_unmounted: + self.charm.unit.status = current_status + self._restart() + + def _hostpaths_to_reconfigure(self) -> List[HostPath]: + hostpaths_to_reconfigure: List[HostPath] = [] + client = Client() + statefulset = client.get(StatefulSet, self.charm.app.name, namespace=self.charm.model.name) + volumes = statefulset.spec.template.spec.volumes + + for hostpath in self.hostpaths: + hostpath_is_set = True if self.charm.config.get(hostpath.config) else False + hostpath_already_configured = next( + (True for volume in volumes if volume.name == hostpath.config), False + ) + if hostpath_is_set != hostpath_already_configured: + hostpaths_to_reconfigure.append(hostpath) + + return hostpaths_to_reconfigure + + def _setup_debug_mode( + self, + password: str, + service_name: str = None, + mounted_hostpaths: List[HostPath] = [], + ) -> None: + services = self.container.get_plan().services + if not service_name and len(services) != 1: + raise Exception("Cannot start debug-mode: please set the service_name") + + service = None + if not service_name: + service_name, service = services.popitem() + if not service: + service = services.get(service_name) + + logger.debug(f"getting environment variables from service {service_name}") + environment = service.environment + environment_file_content = "\n".join( + [f'export {key}="{value}"' for key, value in environment.items()] + ) + logger.debug(f"pushing environment file to {self.container.name} container") + self.container.push("/debug.envs", environment_file_content) + + # Push VSCode workspace + logger.debug(f"pushing vscode workspace to {self.container.name} container") + self.container.push("/debug.code-workspace", self.vscode_workspace) + + # Execute debugging script + logger.debug(f"pushing debug-mode setup script to {self.container.name} container") + self.container.push("/debug.sh", _DEBUG_SCRIPT.format(password), permissions=0o777) + logger.debug(f"executing debug-mode setup script in {self.container.name} container") + self.container.exec(["/debug.sh"]).wait_output() + logger.debug(f"stopping service {service_name} in {self.container.name} container") + self.container.stop(service_name) + + # Add symlinks to mounted hostpaths + for hostpath in mounted_hostpaths: + logger.debug(f"adding symlink for {hostpath.config}") + self.container.exec(["rm", "-rf", hostpath.container_path]).wait_output() + self.container.exec( + [ + "ln", + "-s", + f"{hostpath.mount_path}/{hostpath.module_name}", + hostpath.container_path, + ] + ) + + def _configure_hostpaths(self, hostpaths: List[HostPath]): + client = Client() + statefulset = client.get(StatefulSet, self.charm.app.name, namespace=self.charm.model.name) + + for hostpath in hostpaths: + if self.charm.config.get(hostpath.config): + self._add_hostpath_to_statefulset(hostpath, statefulset) + else: + self._delete_hostpath_from_statefulset(hostpath, statefulset) + + client.replace(statefulset) + + def _unmount_hostpaths(self) -> bool: + client = Client() + hostpath_unmounted = False + statefulset = client.get(StatefulSet, self.charm.app.name, namespace=self.charm.model.name) + + for hostpath in self.hostpaths: + if self._delete_hostpath_from_statefulset(hostpath, statefulset): + hostpath_unmounted = True + + if hostpath_unmounted: + client.replace(statefulset) + + return hostpath_unmounted + + def _add_hostpath_to_statefulset(self, hostpath: HostPath, statefulset: StatefulSet): + # Add volume + logger.debug(f"adding volume {hostpath.config} to {self.charm.app.name} statefulset") + volume = Volume( + hostpath.config, + hostPath=HostPathVolumeSource( + path=self.charm.config[hostpath.config], + type="Directory", + ), + ) + statefulset.spec.template.spec.volumes.append(volume) + + # Add volumeMount + for statefulset_container in statefulset.spec.template.spec.containers: + if statefulset_container.name != self.container.name: + continue + + logger.debug( + f"adding volumeMount {hostpath.config} to {self.container.name} container" + ) + statefulset_container.volumeMounts.append( + VolumeMount(mountPath=hostpath.mount_path, name=hostpath.config) + ) + + def _delete_hostpath_from_statefulset(self, hostpath: HostPath, statefulset: StatefulSet): + hostpath_unmounted = False + for volume in statefulset.spec.template.spec.volumes: + + if hostpath.config != volume.name: + continue + + # Remove volumeMount + for statefulset_container in statefulset.spec.template.spec.containers: + if statefulset_container.name != self.container.name: + continue + for volume_mount in statefulset_container.volumeMounts: + if volume_mount.name != hostpath.config: + continue + + logger.debug( + f"removing volumeMount {hostpath.config} from {self.container.name} container" + ) + statefulset_container.volumeMounts.remove(volume_mount) + + # Remove volume + logger.debug( + f"removing volume {hostpath.config} from {self.charm.app.name} statefulset" + ) + statefulset.spec.template.spec.volumes.remove(volume) + + hostpath_unmounted = True + return hostpath_unmounted + + def _get_vscode_command( + self, + pod_ip: str, + user: str = "root", + workspace_path: str = "/debug.code-workspace", + ) -> None: + return f"code --remote ssh-remote+{user}@{pod_ip} {workspace_path}" + + def _restart(self): + self.container.exec(["kill", "-HUP", "1"]) diff --git a/installers/charm/osm-ng-ui/lib/charms/osm_nbi/v0/nbi.py b/installers/charm/osm-ng-ui/lib/charms/osm_nbi/v0/nbi.py new file mode 100644 index 00000000..130b6faa --- /dev/null +++ b/installers/charm/osm-ng-ui/lib/charms/osm_nbi/v0/nbi.py @@ -0,0 +1,178 @@ +#!/usr/bin/env python3 +# Copyright 2022 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 +# +# +# Learn more at: https://juju.is/docs/sdk + +"""Nbi library. + +This [library](https://juju.is/docs/sdk/libraries) implements both sides of the +`nbi` [interface](https://juju.is/docs/sdk/relations). + +The *provider* side of this interface is implemented by the +[osm-nbi Charmed Operator](https://charmhub.io/osm-nbi). + +Any Charmed Operator that *requires* NBI for providing its +service should implement the *requirer* side of this interface. + +In a nutshell using this library to implement a Charmed Operator *requiring* +NBI would look like + +``` +$ charmcraft fetch-lib charms.osm_nbi.v0.nbi +``` + +`metadata.yaml`: + +``` +requires: + nbi: + interface: nbi + limit: 1 +``` + +`src/charm.py`: + +``` +from charms.osm_nbi.v0.nbi import NbiRequires +from ops.charm import CharmBase + + +class MyCharm(CharmBase): + + def __init__(self, *args): + super().__init__(*args) + self.nbi = NbiRequires(self) + self.framework.observe( + self.on["nbi"].relation_changed, + self._on_nbi_relation_changed, + ) + self.framework.observe( + self.on["nbi"].relation_broken, + self._on_nbi_relation_broken, + ) + self.framework.observe( + self.on["nbi"].relation_broken, + self._on_nbi_broken, + ) + + def _on_nbi_relation_broken(self, event): + # Get NBI host and port + host: str = self.nbi.host + port: int = self.nbi.port + # host => "osm-nbi" + # port => 9999 + + def _on_nbi_broken(self, event): + # Stop service + # ... + self.unit.status = BlockedStatus("need nbi relation") +``` + +You can file bugs +[here](https://osm.etsi.org/bugzilla/enter_bug.cgi), selecting the `devops` module! +""" +from typing import Optional + +from ops.charm import CharmBase, CharmEvents +from ops.framework import EventBase, EventSource, Object +from ops.model import Relation + + +# The unique Charmhub library identifier, never change it +LIBID = "8c888f7c869949409e12c16d78ec068b" + +# Increment this major API version when introducing breaking changes +LIBAPI = 0 + +# Increment this PATCH version before using `charmcraft publish-lib` or reset +# to 0 if you are raising the major API version +LIBPATCH = 1 + +NBI_HOST_APP_KEY = "host" +NBI_PORT_APP_KEY = "port" + + +class NbiRequires(Object): # pragma: no cover + """Requires-side of the Nbi relation.""" + + def __init__(self, charm: CharmBase, endpoint_name: str = "nbi") -> None: + super().__init__(charm, endpoint_name) + self.charm = charm + self._endpoint_name = endpoint_name + + @property + def host(self) -> str: + """Get nbi hostname.""" + relation: Relation = self.model.get_relation(self._endpoint_name) + return ( + relation.data[relation.app].get(NBI_HOST_APP_KEY) + if relation and relation.app + else None + ) + + @property + def port(self) -> int: + """Get nbi port number.""" + relation: Relation = self.model.get_relation(self._endpoint_name) + return ( + int(relation.data[relation.app].get(NBI_PORT_APP_KEY)) + if relation and relation.app + else None + ) + + +class NbiProvides(Object): + """Provides-side of the Nbi relation.""" + + def __init__(self, charm: CharmBase, endpoint_name: str = "nbi") -> None: + super().__init__(charm, endpoint_name) + self._endpoint_name = endpoint_name + + def set_host_info(self, host: str, port: int, relation: Optional[Relation] = None) -> None: + """Set Nbi host and port. + + This function writes in the application data of the relation, therefore, + only the unit leader can call it. + + Args: + host (str): Nbi hostname or IP address. + port (int): Nbi port. + relation (Optional[Relation]): Relation to update. + If not specified, all relations will be updated. + + Raises: + Exception: if a non-leader unit calls this function. + """ + if not self.model.unit.is_leader(): + raise Exception("only the leader set host information.") + + if relation: + self._update_relation_data(host, port, relation) + return + + for relation in self.model.relations[self._endpoint_name]: + self._update_relation_data(host, port, relation) + + def _update_relation_data(self, host: str, port: int, relation: Relation) -> None: + """Update data in relation if needed.""" + relation.data[self.model.app][NBI_HOST_APP_KEY] = host + relation.data[self.model.app][NBI_PORT_APP_KEY] = str(port) diff --git a/installers/charm/osm-ng-ui/metadata.yaml b/installers/charm/osm-ng-ui/metadata.yaml new file mode 100644 index 00000000..be03f247 --- /dev/null +++ b/installers/charm/osm-ng-ui/metadata.yaml @@ -0,0 +1,57 @@ +# Copyright 2022 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 +# +# +# This file populates the Overview on Charmhub. +# See https://juju.is/docs/some-url-to-be-determined/ for a checklist and guidance. + +name: osm-ng-ui + +# The following metadata are human-readable and will be published prominently on Charmhub. + +display-name: OSM NG-UI + +summary: OSM Next-generation User Interface (NG-UI) + +description: | + A Kubernetes operator that deploys the Next-generation User Interface of OSM. + + This charm doesn't make sense on its own. + See more: + - https://charmhub.io/osm + +containers: + ng-ui: + resource: ng-ui-image + +# This file populates the Resources tab on Charmhub. + +resources: + ng-ui-image: + type: oci-image + description: OCI image for ng-ui + upstream-source: opensourcemano/ng-ui + +requires: + ingress: + interface: ingress + limit: 1 + nbi: + interface: nbi diff --git a/installers/charm/osm-ng-ui/pyproject.toml b/installers/charm/osm-ng-ui/pyproject.toml new file mode 100644 index 00000000..d0d4a5bc --- /dev/null +++ b/installers/charm/osm-ng-ui/pyproject.toml @@ -0,0 +1,56 @@ +# Copyright 2022 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 + +# Testing tools configuration +[tool.coverage.run] +branch = true + +[tool.coverage.report] +show_missing = true + +[tool.pytest.ini_options] +minversion = "6.0" +log_cli_level = "INFO" + +# Formatting tools configuration +[tool.black] +line-length = 99 +target-version = ["py38"] + +[tool.isort] +profile = "black" + +# Linting tools configuration +[tool.flake8] +max-line-length = 99 +max-doc-length = 99 +max-complexity = 10 +exclude = [".git", "__pycache__", ".tox", "build", "dist", "*.egg_info", "venv"] +select = ["E", "W", "F", "C", "N", "R", "D", "H"] +# Ignore W503, E501 because using black creates errors with this +# Ignore D107 Missing docstring in __init__ +ignore = ["W503", "E501", "D107"] +# D100, D101, D102, D103: Ignore missing docstrings in tests +per-file-ignores = ["tests/*:D100,D101,D102,D103,D104"] +docstring-convention = "google" +# Check for properly formatted copyright header in each file +copyright-check = "True" +copyright-author = "Canonical Ltd." +copyright-regexp = "Copyright\\s\\d{4}([-,]\\d{4})*\\s+%(author)s" diff --git a/installers/charm/osm-ng-ui/requirements.txt b/installers/charm/osm-ng-ui/requirements.txt new file mode 100644 index 00000000..5ee9d5cf --- /dev/null +++ b/installers/charm/osm-ng-ui/requirements.txt @@ -0,0 +1,23 @@ +# Copyright 2022 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 +ops >= 1.2.0 +lightkube +lightkube-models +git+https://github.com/charmed-osm/config-validator/ diff --git a/installers/charm/osm-ng-ui/src/charm.py b/installers/charm/osm-ng-ui/src/charm.py new file mode 100755 index 00000000..f74fe0b2 --- /dev/null +++ b/installers/charm/osm-ng-ui/src/charm.py @@ -0,0 +1,226 @@ +#!/usr/bin/env python3 +# Copyright 2022 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 +# +# +# Learn more at: https://juju.is/docs/sdk + +"""OSM NG-UI charm. + +See more: https://charmhub.io/osm +""" + +import logging +import re +from typing import Any, Dict + +from charms.nginx_ingress_integrator.v0.ingress import IngressRequires +from charms.observability_libs.v1.kubernetes_service_patch import KubernetesServicePatch +from charms.osm_libs.v0.utils import ( + CharmError, + check_container_ready, + check_service_active, +) +from charms.osm_nbi.v0.nbi import NbiRequires +from lightkube.models.core_v1 import ServicePort +from ops.charm import CharmBase +from ops.framework import StoredState +from ops.main import main +from ops.model import ActiveStatus, Container + +SERVICE_PORT = 80 + +logger = logging.getLogger(__name__) + + +class OsmNgUiCharm(CharmBase): + """OSM NG-UI Kubernetes sidecar charm.""" + + _stored = StoredState() + + def __init__(self, *args): + super().__init__(*args) + self.ingress = IngressRequires( + self, + { + "service-hostname": self.external_hostname, + "service-name": self.app.name, + "service-port": SERVICE_PORT, + }, + ) + self._observe_charm_events() + self._patch_k8s_service() + self._stored.set_default(default_site_patched=False) + self.nbi = NbiRequires(self) + self.container: Container = self.unit.get_container("ng-ui") + + @property + def external_hostname(self) -> str: + """External hostname property. + + Returns: + str: the external hostname from config. + If not set, return the ClusterIP service name. + """ + return self.config.get("external-hostname") or self.app.name + + # --------------------------------------------------------------------------- + # Handlers for Charm Events + # --------------------------------------------------------------------------- + + def _on_config_changed(self, _) -> None: + """Handler for the config-changed event.""" + try: + self._validate_config() + self._check_relations() + # Check if the container is ready. + # Eventually it will become ready after the first pebble-ready event. + check_container_ready(self.container) + + self._configure_service(self.container) + self._update_ingress_config() + # Update charm status + self._on_update_status() + except CharmError as e: + logger.debug(e.message) + self.unit.status = e.status + + def _on_update_status(self, _=None) -> None: + """Handler for the update-status event.""" + try: + self._check_relations() + check_container_ready(self.container) + check_service_active(self.container, "ng-ui") + self.unit.status = ActiveStatus() + except CharmError as e: + logger.debug(e.message) + self.unit.status = e.status + + def _on_required_relation_broken(self, _) -> None: + """Handler for the kafka-broken event.""" + # Check Pebble has started in the container + try: + check_container_ready(self.container) + check_service_active(self.container, "ng-ui") + self.container.stop("ng-ui") + self._stored.default_site_patched = False + except CharmError: + pass + finally: + self._on_update_status() + + # --------------------------------------------------------------------------- + # Validation and configuration and more + # --------------------------------------------------------------------------- + + def _patch_k8s_service(self) -> None: + port = ServicePort(SERVICE_PORT, name=f"{self.app.name}") + self.service_patcher = KubernetesServicePatch(self, [port]) + + def _observe_charm_events(self) -> None: + event_handler_mapping = { + # Core lifecycle events + self.on.ng_ui_pebble_ready: self._on_config_changed, + self.on.config_changed: self._on_config_changed, + self.on.update_status: self._on_update_status, + # Relation events + self.on["nbi"].relation_changed: self._on_config_changed, + self.on["nbi"].relation_broken: self._on_required_relation_broken, + } + for event, handler in event_handler_mapping.items(): + self.framework.observe(event, handler) + + def _validate_config(self) -> None: + """Validate charm configuration. + + Raises: + CharmError: if charm configuration is invalid. + """ + logger.debug("validating charm config") + + def _check_relations(self) -> None: + """Validate charm relations. + + Raises: + CharmError: if charm configuration is invalid. + """ + logger.debug("check for missing relations") + + if not self.nbi.host or not self.nbi.port: + raise CharmError("need nbi relation") + + def _update_ingress_config(self) -> None: + """Update ingress config in relation.""" + ingress_config = { + "service-hostname": self.external_hostname, + "max-body-size": self.config["max-body-size"], + } + if "tls-secret-name" in self.config: + ingress_config["tls-secret-name"] = self.config["tls-secret-name"] + logger.debug(f"updating ingress-config: {ingress_config}") + self.ingress.update_config(ingress_config) + + def _configure_service(self, container: Container) -> None: + """Add Pebble layer with the ng-ui service.""" + logger.debug(f"configuring {self.app.name} service") + self._patch_default_site(container) + container.add_layer("ng-ui", self._get_layer(), combine=True) + container.replan() + + def _get_layer(self) -> Dict[str, Any]: + """Get layer for Pebble.""" + return { + "summary": "ng-ui layer", + "description": "pebble config layer for ng-ui", + "services": { + "ng-ui": { + "override": "replace", + "summary": "ng-ui service", + "command": 'nginx -g "daemon off;"', + "startup": "enabled", + } + }, + } + + def _patch_default_site(self, container: Container) -> None: + max_body_size = self.config.get("max-body-size") + if ( + self._stored.default_site_patched + and max_body_size == self._stored.default_site_max_body_size + ): + return + default_site_config = container.pull("/etc/nginx/sites-available/default").read() + default_site_config = re.sub( + "client_max_body_size .*\n", + f"client_max_body_size {max_body_size}M;\n", + default_site_config, + ) + default_site_config = re.sub( + "proxy_pass .*\n", + f"proxy_pass https://{self.nbi.host}:{self.nbi.port};\n", + default_site_config, + ) + container.push("/etc/nginx/sites-available/default", default_site_config) + self._stored.default_site_patched = True + self._stored.default_site_max_body_size = max_body_size + + +if __name__ == "__main__": # pragma: no cover + main(OsmNgUiCharm) diff --git a/installers/charm/osm-ng-ui/tests/unit/test_charm.py b/installers/charm/osm-ng-ui/tests/unit/test_charm.py new file mode 100644 index 00000000..006da99e --- /dev/null +++ b/installers/charm/osm-ng-ui/tests/unit/test_charm.py @@ -0,0 +1,93 @@ +#!/usr/bin/env python3 +# Copyright 2022 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 +# +# Learn more about testing at: https://juju.is/docs/sdk/testing + +import pytest +from ops.model import ActiveStatus, BlockedStatus +from ops.testing import Harness +from pytest_mock import MockerFixture + +from charm import CharmError, OsmNgUiCharm, check_service_active + +container_name = "ng-ui" +service_name = "ng-ui" + +sites_default = """ +server { + listen 80; + server_name localhost; + root /usr/share/nginx/html; + index index.html index.htm; + client_max_body_size 50M; + + location /osm { + proxy_pass https://nbi:9999; + proxy_next_upstream error timeout invalid_header http_500 http_502 http_503 http_504; + proxy_set_header Accept-Encoding ""; + } + + location / { + try_files $uri $uri/ /index.html; + } +} +""" + + +@pytest.fixture +def harness(mocker: MockerFixture): + mocker.patch("charm.KubernetesServicePatch", lambda x, y: None) + harness = Harness(OsmNgUiCharm) + harness.begin() + harness.charm.unit.get_container("ng-ui").push( + "/etc/nginx/sites-available/default", sites_default, make_dirs=True + ) + yield harness + harness.cleanup() + + +def test_missing_relations(harness: Harness): + harness.charm.on.config_changed.emit() + assert type(harness.charm.unit.status) == BlockedStatus + assert harness.charm.unit.status.message == "need nbi relation" + + +def test_ready(harness: Harness): + _add_relation(harness) + assert harness.charm.unit.status == ActiveStatus() + + +def test_container_stops_after_relation_broken(harness: Harness): + harness.charm.on[container_name].pebble_ready.emit(container_name) + container = harness.charm.unit.get_container(container_name) + relation_id = _add_relation(harness) + check_service_active(container, service_name) + harness.remove_relation(relation_id) + with pytest.raises(CharmError): + check_service_active(container, service_name) + + +def _add_relation(harness: Harness): + # Add nbi relation + relation_id = harness.add_relation("nbi", "nbi") + harness.add_relation_unit(relation_id, "nbi/0") + harness.update_relation_data(relation_id, "nbi", {"host": "nbi", "port": 9999}) + return relation_id diff --git a/installers/charm/osm-ng-ui/tox.ini b/installers/charm/osm-ng-ui/tox.ini new file mode 100644 index 00000000..13c97358 --- /dev/null +++ b/installers/charm/osm-ng-ui/tox.ini @@ -0,0 +1,95 @@ +# Copyright 2022 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 + +[tox] +skipsdist=True +skip_missing_interpreters = True +envlist = lint, unit + +[vars] +src_path = {toxinidir}/src/ +tst_path = {toxinidir}/tests/ +lib_path = {toxinidir}/lib/charms/osm_ng_ui +all_path = {[vars]src_path} {[vars]tst_path} + +[testenv] +setenv = + PYTHONPATH = {toxinidir}:{toxinidir}/lib:{[vars]src_path} + PYTHONBREAKPOINT=ipdb.set_trace + PY_COLORS=1 +passenv = + PYTHONPATH + CHARM_BUILD_DIR + MODEL_SETTINGS + +[testenv:fmt] +description = Apply coding style standards to code +deps = + black + isort +commands = + isort {[vars]all_path} + black {[vars]all_path} + +[testenv:lint] +description = Check code against coding style standards +deps = + black + flake8 + flake8-docstrings + flake8-copyright + flake8-builtins + pyproject-flake8 + pep8-naming + isort + codespell +commands = + # uncomment the following line if this charm owns a lib + codespell {[vars]lib_path} + codespell {toxinidir}/. --skip {toxinidir}/.git --skip {toxinidir}/.tox \ + --skip {toxinidir}/build --skip {toxinidir}/lib --skip {toxinidir}/venv \ + --skip {toxinidir}/.mypy_cache --skip {toxinidir}/icon.svg + # pflake8 wrapper supports config from pyproject.toml + pflake8 {[vars]all_path} + isort --check-only --diff {[vars]all_path} + black --check --diff {[vars]all_path} + +[testenv:unit] +description = Run unit tests +deps = + pytest + pytest-mock + coverage[toml] + -r{toxinidir}/requirements.txt +commands = + coverage run --source={[vars]src_path},{[vars]lib_path} \ + -m pytest --ignore={[vars]tst_path}integration -v --tb native -s {posargs} + coverage report + coverage xml + +[testenv:integration] +description = Run integration tests +deps = + pytest + juju + pytest-operator + -r{toxinidir}/requirements.txt +commands = + pytest -v --tb native --ignore={[vars]tst_path}unit --log-cli-level=INFO -s {posargs}