Fix bug 1987

nscharm_policy_vnf/charms/layers/vnf-policy/README.md

-# Overview
-
-This is an example of an Open Source Mano (OSM) charm used with the Network Service (ns) example. 
-
-# Usage
-
-
-## Known Limitations and Issues
-
-Network Service charms are an **experimental** feature, expected to be released with OSM R6 in the spring of 2019.
-
-
-# Configuration
-
-None
-
-# Contact Information
-## Open Source Mano (OSM)
-
-  - [OSM website](https://osm.etsi.org/)
-  - [OSM bug tracker](https://osm.etsi.org/bugzilla/)
-  - [OSM_TECH](mailto:OSM_TECH@list.etsi.org) mailing list
-  - [Slack](https://join.slack.com/t/opensourcemano/shared_invite/enQtMzQ3MzYzNTQ0NDIyLWJkMzRjNDM0MjFjODYzMGQ3ODIzMzJlNTg2ZGI5OTdiZjFiNDMyMzYxMjRjNDU4N2FmNjRjNzY5NTE1MjgzOTQ)
-

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nscharm_policy_vnf/charms/layers/vnf-policy/layer.yaml

-includes:
-    - 'layer:basic'
-    - 'layer:vnfproxy'
-    - 'layer:sshproxy'
-options:
-    basic:
-        use_venv: false
-

nscharm_policy_vnf/charms/layers/vnf-policy/metadata.yaml

-name: vnf-policy
-summary: <Fill in summary here>
-maintainer: Adam Israel <Adam.Israel@maidalchini>
-description: |
-  <Multi-line description here>
-tags:
-  # Replace "misc" with one or more whitelisted tags from this list:
-  # https://jujucharms.com/docs/stable/authors-charm-metadata
-  - misc
-series:
-  - xenial
-  - bionic
-subordinate: false

nscharm_policy_vnf/charms/layers/vnf-policy/reactive/vnf_policy.py

-from charmhelpers.core.hookenv import (
-    action_get,
-    action_fail,
-    action_set,
-    status_set,
-    log,
-)
-
-from charms.reactive import (
-    clear_flag,
-    set_flag,
-    when,
-    when_not,
-)
-
-
-@when('sshproxy.configured')
-@when_not('vnf-policy.installed')
-def install_vnf_b():
-    set_flag('vnf-policy.installed')
-    status_set('active', 'Ready!')
-
-
-@when('actions.set-policy')
-def action_set_policy():
-    """Set the policy for a given user.
-
-    Sets the policy (bw and qos) for the specified user_id
-    """
-    err = ''
-    updated = False
-    try:
-        user_id = action_get('user_id')
-        bw = action_get('bw')
-        qos = action_get('qos')
-
-        # If this were a functional vnf, you would perform your operation here
-        # and may return a value to indicate success or failure.
-        updated = True
-
-    except Exception as err:
-        action_fail(str(err))
-    else:
-        action_set({'updated': updated})
-    finally:
-        clear_flag('actions.set-policy')

nscharm_policy_vnf/charms/layers/vnf-policy/tests/00-setup

-#!/bin/bash
-
-sudo add-apt-repository ppa:juju/stable -y
-sudo apt-get update
-sudo apt-get install amulet python-requests -y

nscharm_policy_vnf/charms/layers/vnf-policy/tests/10-deploy

-#!/usr/bin/python3
-
-import amulet
-import requests
-import unittest
-
-
-class TestCharm(unittest.TestCase):
-    def setUp(self):
-        self.d = amulet.Deployment()
-
-        self.d.add('vnf-b')
-        self.d.expose('vnf-b')
-
-        self.d.setup(timeout=900)
-        self.d.sentry.wait()
-
-        self.unit = self.d.sentry['vnf-b'][0]
-
-    def test_service(self):
-        # test we can access over http
-        page = requests.get('http://{}'.format(self.unit.info['public-address']))
-        self.assertEqual(page.status_code, 200)
-        # Now you can use self.d.sentry[SERVICE][UNIT] to address each of the units and perform
-        # more in-depth steps. Each self.d.sentry[SERVICE][UNIT] has the following methods:
-        # - .info - An array of the information of that unit from Juju
-        # - .file(PATH) - Get the details of a file on that unit
-        # - .file_contents(PATH) - Get plain text output of PATH file from that unit
-        # - .directory(PATH) - Get details of directory
-        # - .directory_contents(PATH) - List files and folders in PATH on that unit
-        # - .relation(relation, service:rel) - Get relation data from return service
-
-        
-if __name__ == '__main__':
-    unittest.main()

nscharm_policy_vnf/charms/ops/vnf-policy-operator/.gitignore

+# Copyright 2020 David Garcia
+# See LICENSE file for licensing details.
+
+__pycache__
+*.pyc
+.vscode
+venv
+.charm
+build
+__pycache__
\ No newline at end of file

nscharm_policy_vnf/charms/ops/vnf-policy-operator/.jujuignore

+/venv
+*.py[cod]
+*.charm

nscharm_policy_vnf/charms/ops/vnf-policy-operator/README.md

+# sshproxy
+
+## Description
+
+SSHProxy Charm example for Open Source MANO.
+
+The purpose of this charm is to operate a VNF via SSH. For this, the charm should know the hostname of the VNF (ip address), and the username. The charm will be in a blocked state until it has the hostname, username, and the credentials for SSH-ing to the VNF. Both hostname and username are set via config, with `ssh-hostname` and `ssh-username` respectively.
+
+There are two ways of specifying the credentials: password, keys. (See next section)
+
+
+## Usage
+
+This charm works for both LXD and K8s. By default, it will work on LXD. To make it work in K8s, just change the following in the `metadata.yaml`
+
+```yaml
+series:
+# - focal
+# - bionic
+# - xenial
+ - kubernetes
+ deployment:
+    mode: operator
+```
+
+### Prepare the environment:
+
+- LXD:
+
+```bash
+sudo snap install juju --classic
+juju bootstrap lxd
+juju add-model test
+```
+
+- K8s:
+
+```bash
+sudo snap install juju --classic
+sudo snap install microk8s --classic
+sudo microk8s.status --wait-ready
+sudo microk8s.enable storage dns
+juju bootstrap microk8s
+juju add-model test
+```
+
+### Deploying charm:
+
+```bash
+charmcraft build
+juju deploy ./sshproxy.charm
+```
+
+### Configuring the charm:
+
+First of all, set the username and hostname of the VNF:
+
+```bash
+juju config sshproxy ssh-hostname=<hostname> \
+                     ssh-username=<username>
+```
+
+#### Mirrors
+
+To workaround this [bug](https://bugs.launchpad.net/juju/+bug/1929399), use the following configurations of the charm to specify the urls of apt and security mirrors.
+
+```bash
+juju config sshproxy apt-mirror=<apt-mirror> \
+                     security-apt-mirror=<security-apt-mirror>
+```
+
+### Credentials
+
+There are two ways to set up the credentials for the charm to be able to SSH the VNF.
+
+With password:
+
+```bash
+juju config sshproxy ssh-password=<password>
+```
+
+With public keys:
+
+1. First get the public key from the charm
+
+```bash
+$ juju run-action sshproxy/0 get-ssh-public-key --wait
+unit-sshproxy-0:
+  UnitId: sshproxy/0
+  id: "12"
+  results:
+    pubkey: |
+      ssh-rsa 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 root@juju-73fac6-2
+  status: completed
+  timing:
+    completed: 2020-11-18 15:42:03 +0000 UTC
+    enqueued: 2020-11-18 15:42:00 +0000 UTC
+    started: 2020-11-18 15:42:03 +0000 UTC
+```
+2. Inject that key in `~/.ssh/authorized_keys` at the VNF
+3. Verify the ssh credentials
+
+```bash
+$ juju run-action sshproxy/0 verify-ssh-credentials --wait
+unit-sshproxy-0:
+  UnitId: sshproxy/0
+  id: "14"
+  results:
+    verified: "True"
+  status: completed
+  timing:
+    completed: 2020-11-18 15:39:30 +0000 UTC
+    enqueued: 2020-11-18 15:39:29 +0000 UTC
+    started: 2020-11-18 15:39:29 +0000 UTC
+```
+
+
+## Developing
+
+Create and activate a virtualenv with the development requirements:
+
+    virtualenv -p python3 venv
+    source venv/bin/activate
+    pip install -r requirements-dev.txt
+
+## Testing
+
+The Python operator framework includes a very nice harness for testing
+operator behaviour without full deployment. Just `run_tests`:
+
+    ./run_tests

nscharm_policy_vnf/charms/layers/vnf-policy/actions/set-policy → nscharm_policy_vnf/charms/ops/vnf-policy-operator/charmcraft.yaml

-#!/usr/bin/env python3
-##
-# Copyright 2016 Canonical Ltd.
-# All rights reserved.
+# 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
@@ -14,20 +11,22 @@
 # 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
 ##
-import sys
-sys.path.append('lib')
-
-from charms.reactive import main, set_flag
-from charmhelpers.core.hookenv import action_fail, action_name
-
-"""
-`set_state` only works here because it's flushed to disk inside the `main()`
-loop. remove_state will need to be called inside the action method.
-"""
-set_flag('actions.{}'.format(action_name()))
 
-try:
-    main()
-except Exception as e:
-    action_fail(repr(e))
+type: charm
+bases:
+  - build-on:
+      - name: ubuntu
+        channel: "20.04"
+        architectures: ["amd64"]
+    run-on:
+      - name: ubuntu
+        channel: "20.04"
+        architectures:
+          - amd64

nscharm_policy_vnf/charms/ops/vnf-policy-operator/config.yaml

+# Copyright 2022 David Garcia
+# See LICENSE file for licensing details.
+options:
+  ssh-hostname:
+    type: string
+    default: ""
+    description: "Mock config"
+  ssh-username:
+    type: string
+    default: ""
+    description: "Mock config"
+  ssh-password:
+    type: string
+    default: ""
+    description: "Mock config"

nscharm_policy_vnf/charms/ops/vnf-policy-operator/metadata.yaml

+# Copyright 2020 David Garcia
+# See LICENSE file for licensing details.
+name: vnf-policy
+description: |
+  This is a basic example of charm that emulates a Proxy Charm
+  creating a policy for a user in a remote VNF. The action
+  `set-policy` implemented by the charm just returns a True,
+  doesn't really do anything.
+summary: VNF policy operator
+series:
+  - focal
+  - bionic
+  - xenial

nscharm_policy_vnf/charms/ops/vnf-policy-operator/requirements.txt

+ops

nscharm_policy_vnf/charms/ops/vnf-policy-operator/src/charm.py

+#!/usr/bin/env python3
+# Copyright 2020 David Garcia
+# See LICENSE file for licensing details.
+
+from ops.main import main
+from ops.charm import CharmBase
+from ops.model import ActiveStatus
+
+
+class VnfPolicyCharm(CharmBase):
+    def __init__(self, *args):
+        super().__init__(*args)
+
+        # Charm events
+        self.framework.observe(self.on.install, self._on_install)
+        self.framework.observe(self.on.set_policy_action, self._on_set_policy_action)
+
+    def _on_install(self, _):
+        self.unit.status = ActiveStatus()
+
+    def _on_set_policy_action(self, event):
+        """Set policy action."""
+        event.set_results({"updated": True})
+
+
+if __name__ == "__main__":
+    main(VnfPolicyCharm)

nscharm_policy_vnf/nscharm_policy_vnfd.yaml

@@ -17,7 +17,7 @@ vnfd:
           execution-environment-list:
           - id: vnf-policy-ee
             juju:
-              charm: vnf-policy
+              charm: vnf-policy_ubuntu-20.04-amd64.charm
               proxy: true
           initial-config-primitive:
           - name: config

nscharm_user_vnf/charms/layers/vnf-user/README.md

-# Overview
-
-This is an example of an Open Source Mano (OSM) charm used with the Network Service (ns) example. 
-
-Network Service charms are an **experimental** feature, expected to be released with OSM R6 in the spring of 2019.
-
-# Usage
-
-
-## Known Limitations and Issues
-
-This not only helps users but gives people a place to start if they want to help
-you add features to your charm.
-
-# Configuration
-
-None
-
-# Contact Information
-## Open Source Mano (OSM)
-
-  - [OSM website](https://osm.etsi.org/)
-  - [OSM bug tracker](https://osm.etsi.org/bugzilla/)
-  - [OSM_TECH](mailto:OSM_TECH@list.etsi.org) mailing list
-  - [Slack](https://join.slack.com/t/opensourcemano/shared_invite/enQtMzQ3MzYzNTQ0NDIyLWJkMzRjNDM0MjFjODYzMGQ3ODIzMzJlNTg2ZGI5OTdiZjFiNDMyMzYxMjRjNDU4N2FmNjRjNzY5NTE1MjgzOTQ)
-