Merge branch 'cherry-pick-74517831' into 'v9.0'

Virtual PC for Hackfest

See merge request !130

hackfest_virtual-pc_vnfd/charms/virtual-pc/venv/PyYAML-5.4.1.dist-info/RECORD

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hackfest_virtual-pc_vnfd/charms/virtual-pc/venv/PyYAML-5.4.1.dist-info/WHEEL

+Wheel-Version: 1.0
+Generator: bdist_wheel (0.36.2)
+Root-Is-Purelib: false
+Tag: cp38-cp38-manylinux1_x86_64
+

hackfest_virtual-pc_vnfd/charms/virtual-pc/venv/PyYAML-5.4.1.dist-info/top_level.txt

+_yaml
+yaml

hackfest_virtual-pc_vnfd/charms/virtual-pc/venv/_yaml/__init__.py

+# This is a stub package designed to roughly emulate the _yaml
+# extension module, which previously existed as a standalone module
+# and has been moved into the `yaml` package namespace.
+# It does not perfectly mimic its old counterpart, but should get
+# close enough for anyone who's relying on it even when they shouldn't.
+import yaml
+
+# in some circumstances, the yaml module we imoprted may be from a different version, so we need
+# to tread carefully when poking at it here (it may not have the attributes we expect)
+if not getattr(yaml, '__with_libyaml__', False):
+    from sys import version_info
+
+    exc = ModuleNotFoundError if version_info >= (3, 6) else ImportError
+    raise exc("No module named '_yaml'")
+else:
+    from yaml._yaml import *
+    import warnings
+    warnings.warn(
+        'The _yaml extension module is now located at yaml._yaml'
+        ' and its location is subject to change.  To use the'
+        ' LibYAML-based parser and emitter, import from `yaml`:'
+        ' `from yaml import CLoader as Loader, CDumper as Dumper`.',
+        DeprecationWarning
+    )
+    del warnings
+    # Don't `del yaml` here because yaml is actually an existing
+    # namespace member of _yaml.
+
+__name__ = '_yaml'
+# If the module is top-level (i.e. not a part of any specific package)
+# then the attribute should be set to ''.
+# https://docs.python.org/3.8/library/types.html
+__package__ = ''

hackfest_virtual-pc_vnfd/charms/virtual-pc/venv/ops-1.1.0.dist-info/INSTALLER

+pip

hackfest_virtual-pc_vnfd/charms/virtual-pc/venv/ops-1.1.0.dist-info/LICENSE.txt

+
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+      on Your own behalf and on Your sole responsibility, not on behalf
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hackfest_virtual-pc_vnfd/charms/virtual-pc/venv/ops-1.1.0.dist-info/METADATA

+Metadata-Version: 2.1
+Name: ops
+Version: 1.1.0
+Summary: The Python library behind great charms
+Home-page: https://github.com/canonical/operator
+Author: The Charmcraft team at Canonical Ltd.
+Author-email: charmcraft@lists.launchpad.net
+License: Apache-2.0
+Platform: UNKNOWN
+Classifier: Programming Language :: Python :: 3
+Classifier: License :: OSI Approved :: Apache Software License
+Classifier: Development Status :: 4 - Beta
+Classifier: Intended Audience :: Developers
+Classifier: Intended Audience :: System Administrators
+Classifier: Operating System :: MacOS :: MacOS X
+Classifier: Operating System :: POSIX :: Linux
+Requires-Python: >=3.5
+Description-Content-Type: text/markdown
+Requires-Dist: PyYAML
+
+# The Operator Framework
+
+This Operator Framework simplifies [Kubernetes
+operator](https://charmhub.io/about) development for 
+[model-driven application
+management](https://juju.is/model-driven-operations).
+
+A Kubernetes operator is a container that drives lifecycle management,
+configuration, integration and daily actions for an application.
+Operators simplify software management and operations. They capture
+reusable app domain knowledge from experts in a software component that
+can be shared.
+
+This project extends the operator pattern to enable 
+[universal operators](https://juju.is/universal-operators), not just
+for Kubernetes but also operators for traditional Linux or Windows
+application management.
+
+Operators use an [Operator Lifecycle Manager
+(OLM)](https://juju.is/operator-lifecycle-manager) to coordinate their
+work in a cluster. The system uses Golang for concurrent event
+processing under the hood, but enables the operators to be written in
+Python.
+
+## Simple, composable operators
+
+Operators should 'do one thing and do it well'. Each operator drives a
+single microservice and can be [composed with other 
+operators](https://juju.is/integration) to deliver a complex application.
+
+It is better to have small, reusable operators that each drive a single
+microservice very well. The operator handles instantiation, scaling,
+configuration, optimisation, networking, service mesh, observability,
+and day-2 operations specific to that microservice.
+
+Operator composition takes place through declarative integration in
+the OLM. Operators declare integration endpoints, and discover lines of
+integration between those endpoints dynamically at runtime.
+
+## Pure Python operators
+
+The framework provides a standard Python library and object model that
+represents the application graph, and an event distribution mechanism for
+distributed system coordination and communication.
+
+The OLM is written in Golang for efficient concurrency in event handling
+and distribution. Operators can be written in any language. We recommend
+this Python framework for ease of design, development and collaboration.
+
+## Better collaboration
+
+Operator developers publish Python libraries that make it easy to integrate
+your operator with their operator. The framework includes standard tools
+to distribute these integration libraries and keep them up to date.
+
+Development collaboration happens at [Charmhub.io](https://charmhub.io/) where
+operators are published along with integration libraries. Design and
+code review discussions are hosted in the
+[Charmhub forum](https://discourse.charmhub.io/). We recommend the
+[Open Operator Manifesto](https://charmhub.io/manifesto) as a guideline for
+high quality operator engineering.
+
+## Event serialization and operator services
+
+Distributed systems can be hard! So this framework exists to make it much
+simpler to reason about operator behaviour, especially in complex deployments.
+The OLM provides [operator services](https://juju.is/operator-services) such
+as provisioning, event delivery, leader election and model management.
+
+Coordination between operators is provided by a cluster-wide event
+distribution system. Events are serialized to avoid race conditions in any
+given container or machine. This greatly simplifies the development of
+operators for high availability, scale-out and integrated applications.
+
+## Model-driven Operator Lifecycle Manager
+
+A key goal of the project is to improve the user experience for admins
+working with multiple different operators.
+
+We embrace [model-driven operations](https://juju.is/model-driven-operations)
+in the Operator Lifecycle Manager. The model encompasses capacity,
+storage, networking, the application graph and administrative access.
+
+Admins describe the application graph of integrated microservices, and
+the OLM then drives instantiation. A change in the model is propagated
+to all affected operators, reducing the duplication of effort and
+repetition normally found in operating a complex topology of services.
+
+Administrative actions, updates, configuration and integration are all
+driven through the OLM.
+
+# Getting started
+
+A package of operator code is called a charm. You will use `charmcraft`
+to register your operator name, and publish it when you are ready.
+
+```
+$ sudo snap install charmcraft --beta
+charmcraft (beta) 0.6.0 from John Lenton (chipaca) installed
+```
+
+Charms written using the operator framework are just Python code. The goal
+is to feel natural for somebody used to coding in Python, and reasonably
+easy to learn for somebody who is not a pythonista.
+
+The dependencies of the operator framework are kept as minimal as possible;
+currently that's Python 3.5 or greater, and `PyYAML` (both are included by
+default in Ubuntu's cloud images from 16.04 on).
+
+# A quick introduction
+
+Make an empty directory `my-charm` and cd into it. Then start a new charm
+with:
+
+```
+$ charmcraft init
+All done.
+There are some notes about things we think you should do.
+These are marked with ‘TODO:’, as is customary. Namely:
+      README.md: fill out the description
+      README.md: explain how to use the charm
+  metadata.yaml: fill out the charm's description
+  metadata.yaml: fill out the charm's summary
+```
+
+Charmed operators are just Python code. The entry point to your charm can
+be any filename, by default this is `src/charm.py` which must be executable
+(and probably have `#!/usr/bin/env python3` on the first line).
+
+You need a `metadata.yaml` to describe your charm, and if you will support
+configuration of your charm then `config.yaml` files is required too. The
+`requirements.txt` specifies any Python dependencies.
+
+```
+$ tree my-charm/
+my-charm/
+├── actions.yaml
+├── config.yaml
+├── LICENSE
+├── metadata.yaml
+├── README.md
+├── requirements-dev.txt
+├── requirements.txt
+├── run_tests
+├── src
+│   └── charm.py
+├── tests
+│   ├── __init__.py
+│   └── my_charm.py
+```
+
+`src/charm.py` here is the entry point to your charm code. At a minimum, it
+needs to define a subclass of `CharmBase` and pass that into the framework
+`main` function:
+
+```python
+from ops.charm import CharmBase
+from ops.main import main
+
+class MyCharm(CharmBase):
+    def __init__(self, *args):
+        super().__init__(*args)
+        self.framework.observe(self.on.start, self.on_start)
+
+    def on_start(self, event):
+        # Handle the start event here.
+
+if __name__ == "__main__":
+    main(MyCharm)
+```
+
+That should be enough for you to be able to run
+
+```
+$ charmcraft build
+Done, charm left in 'my-charm.charm'
+$ juju deploy ./my-charm.charm
+```
+
+> 🛈 More information on [`charmcraft`](https://pypi.org/project/charmcraft/) can
+> also be found on its [github page](https://github.com/canonical/charmcraft).
+
+Happy charming!
+
+# Testing your charms
+
+The operator framework provides a testing harness, so you can check your
+charm does the right thing in different scenarios, without having to create
+a full deployment. `pydoc3 ops.testing` has the details, including this
+example:
+
+```python
+harness = Harness(MyCharm)
+# Do initial setup here
+relation_id = harness.add_relation('db', 'postgresql')
+# Now instantiate the charm to see events as the model changes
+harness.begin()
+harness.add_relation_unit(relation_id, 'postgresql/0')
+harness.update_relation_data(relation_id, 'postgresql/0', {'key': 'val'})
+# Check that charm has properly handled the relation_joined event for postgresql/0
+self.assertEqual(harness.charm. ...)
+```
+
+## Talk to us
+
+If you need help, have ideas, or would just like to chat with us, reach out on
+IRC: we're in [#smooth-operator] on freenode (or try the [webchat]).
+
+We also pay attention to [Charmhub discourse](https://discourse.charmhub.io/)
+
+You can also deep dive into the [API docs] if that's your thing.
+
+[webchat]: https://webchat.freenode.net/#smooth-operator
+[#smooth-operator]: irc://chat.freenode.net/%23smooth-operator
+[discourse]: https://discourse.juju.is/c/charming
+[API docs]: https://ops.rtfd.io/
+
+## Operator Framework development
+
+To work in the framework itself you will need Python >= 3.5 and the
+dependencies in `requirements-dev.txt` installed in your system, or a
+virtualenv:
+
+    virtualenv --python=python3 env
+    source env/bin/activate
+    pip install -r requirements-dev.txt
+
+Then you can try `./run_tests`, it should all go green.
+
+For improved performance on the tests, ensure that you have PyYAML
+installed with the correct extensions:
+
+    apt-get install libyaml-dev
+    pip install --force-reinstall --no-cache-dir pyyaml
+
+If you want to build the documentation you'll need the requirements from
+`docs/requirements.txt`, or in your virtualenv
+
+    pip install -r docs/requirements.txt
+
+and then you can run `./build_docs`.
+
+

hackfest_virtual-pc_vnfd/charms/virtual-pc/venv/ops-1.1.0.dist-info/RECORD

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hackfest_virtual-pc_vnfd/charms/virtual-pc/venv/ops-1.1.0.dist-info/WHEEL

+Wheel-Version: 1.0
+Generator: bdist_wheel (0.34.2)
+Root-Is-Purelib: true
+Tag: py3-none-any
+

hackfest_virtual-pc_vnfd/charms/virtual-pc/venv/ops-1.1.0.dist-info/top_level.txt

+ops

hackfest_virtual-pc_vnfd/charms/virtual-pc/venv/ops/__init__.py

+# Copyright 2020 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.
+
+"""The Operator Framework."""
+
+from .version import version as __version__  # noqa: F401 (imported but unused)
+
+# Import here the bare minimum to break the circular import between modules
+from . import charm  # noqa: F401 (imported but unused)

hackfest_virtual-pc_vnfd/charms/virtual-pc/venv/ops/log.py

+# Copyright 2020 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.
+
+"""Interface to emit messages to the Juju logging system."""
+
+import sys
+import logging
+
+
+class JujuLogHandler(logging.Handler):
+    """A handler for sending logs to Juju via juju-log."""
+
+    def __init__(self, model_backend, level=logging.DEBUG):
+        super().__init__(level)
+        self.model_backend = model_backend
+
+    def emit(self, record):
+        """Send the specified logging record to the Juju backend.
+
+        This method is not used directly by the Operator Framework code, but by
+        :class:`logging.Handler` itself as part of the logging machinery.
+        """
+        self.model_backend.juju_log(record.levelname, self.format(record))
+
+
+def setup_root_logging(model_backend, debug=False):
+    """Setup python logging to forward messages to juju-log.
+
+    By default, logging is set to DEBUG level, and messages will be filtered by Juju.
+    Charmers can also set their own default log level with::
+
+      logging.getLogger().setLevel(logging.INFO)
+
+    model_backend -- a ModelBackend to use for juju-log
+    debug -- if True, write logs to stderr as well as to juju-log.
+    """
+    logger = logging.getLogger()
+    logger.setLevel(logging.DEBUG)
+    logger.addHandler(JujuLogHandler(model_backend))
+    if debug:
+        handler = logging.StreamHandler()
+        formatter = logging.Formatter('%(asctime)s %(levelname)-8s %(message)s')
+        handler.setFormatter(formatter)
+        logger.addHandler(handler)
+
+    sys.excepthook = lambda etype, value, tb: logger.error(
+        "Uncaught exception while in charm code:", exc_info=(etype, value, tb))