Refactor repo to not use builds/ directory for compiled charms due to licensing conflicts. See README.md for instructions on how to build a layer
Signed-off-by: Adam Israel <adam.israel@canonical.com>
diff --git a/layers/vyos-proxy/Makefile b/layers/vyos-proxy/Makefile
new file mode 100644
index 0000000..a1ad3a5
--- /dev/null
+++ b/layers/vyos-proxy/Makefile
@@ -0,0 +1,24 @@
+#!/usr/bin/make
+
+all: lint unit_test
+
+
+.PHONY: clean
+clean:
+ @rm -rf .tox
+
+.PHONY: apt_prereqs
+apt_prereqs:
+ @# Need tox, but don't install the apt version unless we have to (don't want to conflict with pip)
+ @which tox >/dev/null || (sudo apt-get install -y python-pip && sudo pip install tox)
+
+.PHONY: lint
+lint: apt_prereqs
+ @tox --notest
+ @PATH=.tox/py34/bin:.tox/py35/bin flake8 $(wildcard hooks reactive lib unit_tests tests)
+ @charm proof
+
+.PHONY: unit_test
+unit_test: apt_prereqs
+ @echo Starting tests...
+ tox
diff --git a/layers/vyos-proxy/README.md b/layers/vyos-proxy/README.md
new file mode 100644
index 0000000..0337c83
--- /dev/null
+++ b/layers/vyos-proxy/README.md
@@ -0,0 +1,221 @@
+# Overview
+
+This is the base layer for all charms [built using layers][building]. It
+provides all of the standard Juju hooks and runs the
+[charms.reactive.main][charms.reactive] loop for them. It also bootstraps the
+[charm-helpers][] and [charms.reactive][] libraries and all of their
+dependencies for use by the charm.
+
+# Usage
+
+To create a charm layer using this base layer, you need only include it in
+a `layer.yaml` file:
+
+```yaml
+includes: ['layer:basic']
+```
+
+This will fetch this layer from [interfaces.juju.solutions][] and incorporate
+it into your charm layer. You can then add handlers under the `reactive/`
+directory. Note that **any** file under `reactive/` will be expected to
+contain handlers, whether as Python decorated functions or [executables][non-python]
+using the [external handler protocol][].
+
+### Charm Dependencies
+
+Each layer can include a `wheelhouse.txt` file with Python requirement lines.
+For example, this layer's `wheelhouse.txt` includes:
+
+```
+pip>=7.0.0,<8.0.0
+charmhelpers>=0.4.0,<1.0.0
+charms.reactive>=0.1.0,<2.0.0
+```
+
+All of these dependencies from each layer will be fetched (and updated) at build
+time and will be automatically installed by this base layer before any reactive
+handlers are run.
+
+Note that the `wheelhouse.txt` file is intended for **charm** dependencies only.
+That is, for libraries that the charm code itself needs to do its job of deploying
+and configuring the payload. If the payload itself has Python dependencies, those
+should be handled separately, by the charm.
+
+See [PyPI][pypi charms.X] for packages under the `charms.` namespace which might
+be useful for your charm.
+
+### Layer Namespace
+
+Each layer has a reserved section in the `charms.layer.` Python package namespace,
+which it can populate by including a `lib/charms/layer/<layer-name>.py` file or
+by placing files under `lib/charms/layer/<layer-name>/`. (If the layer name
+includes hyphens, replace them with underscores.) These can be helpers that the
+layer uses internally, or it can expose classes or functions to be used by other
+layers to interact with that layer.
+
+For example, a layer named `foo` could include a `lib/charms/layer/foo.py` file
+with some helper functions that other layers could access using:
+
+```python
+from charms.layer.foo import my_helper
+```
+
+### Layer Options
+
+Any layer can define options in its `layer.yaml`. Those options can then be set
+by other layers to change the behavior of your layer. The options are defined
+using [jsonschema][], which is the same way that [action paramters][] are defined.
+
+For example, the `foo` layer could include the following option definitons:
+
+```yaml
+includes: ['layer:basic']
+defines: # define some options for this layer (the layer "foo")
+ enable-bar: # define an "enable-bar" option for this layer
+ description: If true, enable support for "bar".
+ type: boolean
+ default: false
+```
+
+A layer using `foo` could then set it:
+
+```yaml
+includes: ['layer:foo']
+options:
+ foo: # setting options for the "foo" layer
+ enable-bar: true # set the "enable-bar" option to true
+```
+
+The `foo` layer can then use the `charms.layer.options` helper to load the values
+for the options that it defined. For example:
+
+```python
+from charms import layer
+
+@when('state')
+def do_thing():
+ layer_opts = layer.options('foo') # load all of the options for the "foo" layer
+ if layer_opts['enable-bar']: # check the value of the "enable-bar" option
+ hookenv.log("Bar is enabled")
+```
+
+You can also access layer options in other handlers, such as Bash, using
+the command-line interface:
+
+```bash
+. charms.reactive.sh
+
+@when 'state'
+function do_thing() {
+ if layer_option foo enable-bar; then
+ juju-log "Bar is enabled"
+ juju-log "bar-value is: $(layer_option foo bar-value)"
+ fi
+}
+
+reactive_handler_main
+```
+
+Note that options of type `boolean` will set the exit code, while other types
+will be printed out.
+
+# Hooks
+
+This layer provides hooks that other layers can react to using the decorators
+of the [charms.reactive][] library:
+
+ * `config-changed`
+ * `install`
+ * `leader-elected`
+ * `leader-settings-changed`
+ * `start`
+ * `stop`
+ * `upgrade-charm`
+ * `update-status`
+
+Other hooks are not implemented at this time. A new layer can implement storage
+or relation hooks in their own layer by putting them in the `hooks` directory.
+
+**Note:** Because `update-status` is invoked every 5 minutes, you should take
+care to ensure that your reactive handlers only invoke expensive operations
+when absolutely necessary. It is recommended that you use helpers like
+[`@only_once`][], [`@when_file_changed`][], and [`data_changed`][] to ensure
+that handlers run only when necessary.
+
+# Layer Configuration
+
+This layer supports the following options, which can be set in `layer.yaml`:
+
+ * **packages** A list of system packages to be installed before the reactive
+ handlers are invoked.
+
+ * **use_venv** If set to true, the charm dependencies from the various
+ layers' `wheelhouse.txt` files will be installed in a Python virtualenv
+ located at `$CHARM_DIR/../.venv`. This keeps charm dependencies from
+ conflicting with payload dependencies, but you must take care to preserve
+ the environment and interpreter if using `execl` or `subprocess`.
+
+ * **include_system_packages** If set to true and using a venv, include
+ the `--system-site-packages` options to make system Python libraries
+ visible within the venv.
+
+An example `layer.yaml` using these options might be:
+
+```yaml
+includes: ['layer:basic']
+options:
+ basic:
+ packages: ['git']
+ use_venv: true
+ include_system_packages: true
+```
+
+
+# Reactive States
+
+This layer will set the following states:
+
+ * **`config.changed`** Any config option has changed from its previous value.
+ This state is cleared automatically at the end of each hook invocation.
+
+ * **`config.changed.<option>`** A specific config option has changed.
+ **`<option>`** will be replaced by the config option name from `config.yaml`.
+ This state is cleared automatically at the end of each hook invocation.
+
+ * **`config.set.<option>`** A specific config option has a True or non-empty
+ value set. **`<option>`** will be replaced by the config option name from
+ `config.yaml`. This state is cleared automatically at the end of each hook
+ invocation.
+
+ * **`config.default.<option>`** A specific config option is set to its
+ default value. **`<option>`** will be replaced by the config option name
+ from `config.yaml`. This state is cleared automatically at the end of
+ each hook invocation.
+
+An example using the config states would be:
+
+```python
+@when('config.changed.my-opt')
+def my_opt_changed():
+ update_config()
+ restart_service()
+```
+
+
+# Actions
+
+This layer currently does not define any actions.
+
+
+[building]: https://jujucharms.com/docs/devel/authors-charm-building
+[charm-helpers]: https://pythonhosted.org/charmhelpers/
+[charms.reactive]: https://pythonhosted.org/charms.reactive/
+[interfaces.juju.solutions]: http://interfaces.juju.solutions/
+[non-python]: https://pythonhosted.org/charms.reactive/#non-python-reactive-handlers
+[external handler protocol]: https://pythonhosted.org/charms.reactive/charms.reactive.bus.html#charms.reactive.bus.ExternalHandler
+[jsonschema]: http://json-schema.org/
+[action paramters]: https://jujucharms.com/docs/stable/authors-charm-actions
+[pypi charms.X]: https://pypi.python.org/pypi?%3Aaction=search&term=charms.&submit=search
+[`@only_once`]: https://pythonhosted.org/charms.reactive/charms.reactive.decorators.html#charms.reactive.decorators.only_once
+[`@when_file_changed`]: https://pythonhosted.org/charms.reactive/charms.reactive.decorators.html#charms.reactive.decorators.when_file_changed
+[`data_changed`]: https://pythonhosted.org/charms.reactive/charms.reactive.helpers.html#charms.reactive.helpers.data_changed
diff --git a/layers/vyos-proxy/actions.yaml b/layers/vyos-proxy/actions.yaml
new file mode 100644
index 0000000..2acc33d
--- /dev/null
+++ b/layers/vyos-proxy/actions.yaml
@@ -0,0 +1,12 @@
+"ping":
+ "description": "ping a thing!"
+ "params":
+ "count":
+ "description": "Stop after sending count ECHO_REQUEST packets"
+ "type": "integer"
+ "default": !!int "30"
+ "destination":
+ "description": "destination of ping request"
+ "type": "string"
+ "required":
+ - "destination"
diff --git a/layers/vyos-proxy/actions/ping b/layers/vyos-proxy/actions/ping
new file mode 100755
index 0000000..9850fe7
--- /dev/null
+++ b/layers/vyos-proxy/actions/ping
@@ -0,0 +1,18 @@
+#!/usr/bin/env python3
+import sys
+sys.path.append('lib')
+
+from charms.reactive import main
+from charms.reactive import set_state
+from charmhelpers.core.hookenv import action_fail
+
+"""
+`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_state('actions.ping')
+
+try:
+ main()
+except Exception as e:
+ action_fail(repr(e))
diff --git a/layers/vyos-proxy/config.yaml b/layers/vyos-proxy/config.yaml
new file mode 100644
index 0000000..0780d5f
--- /dev/null
+++ b/layers/vyos-proxy/config.yaml
@@ -0,0 +1,13 @@
+"options":
+ "hostname":
+ "default": !!null ""
+ "type": "string"
+ "description": "Hostname or IP of the VyOS"
+ "user":
+ "type": "string"
+ "default": "vyos"
+ "description": "Username for VyOS"
+ "pass":
+ "type": "string"
+ "default": !!null ""
+ "description": "Password for VyOS"
diff --git a/layers/vyos-proxy/copyright b/layers/vyos-proxy/copyright
new file mode 100644
index 0000000..afa853f
--- /dev/null
+++ b/layers/vyos-proxy/copyright
@@ -0,0 +1,9 @@
+Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0
+
+Files: *
+Copyright: 2015, Canonical Ltd.
+License: GPL-3
+
+License: GPL-3
+ On Debian GNU/Linux system you can find the complete text of the
+ GPL-3 license in '/usr/share/common-licenses/GPL-3'
diff --git a/layers/vyos-proxy/icon.svg b/layers/vyos-proxy/icon.svg
new file mode 100644
index 0000000..e092eef
--- /dev/null
+++ b/layers/vyos-proxy/icon.svg
@@ -0,0 +1,279 @@
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+
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+ width="96"
+ height="96"
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diff --git a/layers/vyos-proxy/layer.yaml b/layers/vyos-proxy/layer.yaml
new file mode 100644
index 0000000..16ac9ce
--- /dev/null
+++ b/layers/vyos-proxy/layer.yaml
@@ -0,0 +1,12 @@
+"options":
+ "basic":
+ "packages":
+ - "python-dev"
+ - "libffi-dev"
+ - "libssl-dev"
+ "use_venv": !!bool "false"
+ "include_system_packages": !!bool "false"
+ "vyos-proxy": {}
+"includes":
+- "layer:basic"
+"is": "vyos-proxy"
diff --git a/layers/vyos-proxy/metadata.yaml b/layers/vyos-proxy/metadata.yaml
new file mode 100644
index 0000000..1d29b37
--- /dev/null
+++ b/layers/vyos-proxy/metadata.yaml
@@ -0,0 +1,12 @@
+"name": "vyos-proxy"
+"summary": "VyOS Proxy charm for ping"
+"description": |
+ VyOS Proxy charm
+"tags":
+- "vnf"
+- "network"
+"maintainers":
+- "Marco Ceppi <marco.ceppi@canonical.com>"
+"series":
+- "xenial"
+- "trusty"
diff --git a/layers/vyos-proxy/reactive/__init__.py b/layers/vyos-proxy/reactive/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/layers/vyos-proxy/reactive/__init__.py
diff --git a/layers/vyos-proxy/reactive/vyos_proxy.py b/layers/vyos-proxy/reactive/vyos_proxy.py
new file mode 100644
index 0000000..a8fd5e0
--- /dev/null
+++ b/layers/vyos-proxy/reactive/vyos_proxy.py
@@ -0,0 +1,99 @@
+
+import subprocess
+import paramiko
+
+from charmhelpers.core.hookenv import (
+ config,
+ status_set,
+ action_get,
+ action_set,
+ action_fail,
+)
+
+from charms.reactive import (
+ when,
+ when_not,
+ set_state as set_flag,
+ remove_state as remove_flag,
+)
+
+
+@when('config.changed')
+def test_connection():
+ status_set('maintenance', 'configuring ssh connection')
+ remove_flag('vyos-proxy.ready')
+ try:
+ who, _ = run('whoami')
+ except MgmtNotConfigured as e:
+ remove_flag('vyos-proxy.configured')
+ status_set('blocked', str(e))
+ except subprocess.CalledProcessError as e:
+ remove_flag('vyos-proxy.configured')
+ status_set('blocked', e.output)
+ else:
+ set_flag('vyos-proxy.configured')
+
+
+@when('vyos-proxy.configured')
+@when_not('vyos-proxy.ready')
+def vyos_proxy_ready():
+ status_set('active', 'ready')
+ set_flag('vyos-proxy.ready')
+
+
+@when('actions.ping')
+@when_not('vyos-proxy.configured')
+def pingme():
+ action_fail('proxy is not ready')
+
+
+@when('actions.ping')
+@when('vyos-proxy.configured')
+def pingme_forreal():
+ try:
+ result, err = run('ping -qc {} {}'.format(action_get('count'), action_get('destination')))
+ except:
+ action_fail('ping command failed')
+ finally:
+ remove_flag('actions.ping')
+
+ # Here you can send results back from ping, if you had time to parse it
+ action_set({'output': result})
+
+
+
+class MgmtNotConfigured(Exception):
+ pass
+
+
+def run(cmd):
+ ''' Suddenly this project needs to SSH to something. So we replicate what
+ _run was doing with subprocess using the Paramiko library. This is
+ temporary until this charm /is/ the VPE Router '''
+
+ cfg = config()
+
+ hostname = cfg.get('hostname')
+ password = cfg.get('pass')
+ username = cfg.get('user')
+
+ if not (username and password and hostname):
+ raise MgmtNotConfigured('incomplete remote credentials')
+
+ client = paramiko.SSHClient()
+ client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
+
+ try:
+ client.connect(cfg.get('hostname'), port=22,
+ username=cfg.get('user'), password=cfg.get('pass'))
+ except paramiko.ssh_exception.AuthenticationException:
+ raise MgmtNotConfigured('invalid credentials')
+
+ stdin, stdout, stderr = client.exec_command(cmd)
+ retcode = stdout.channel.recv_exit_status()
+ client.close() # @TODO re-use connections
+ if retcode > 0:
+ output = stderr.read().strip()
+ raise subprocess.CalledProcessError(returncode=retcode, cmd=cmd,
+ output=output)
+ return (''.join(stdout), ''.join(stderr))
diff --git a/layers/vyos-proxy/requirements.txt b/layers/vyos-proxy/requirements.txt
new file mode 100644
index 0000000..28ecaca
--- /dev/null
+++ b/layers/vyos-proxy/requirements.txt
@@ -0,0 +1,2 @@
+flake8
+pytest
diff --git a/layers/vyos-proxy/revision b/layers/vyos-proxy/revision
new file mode 100644
index 0000000..c227083
--- /dev/null
+++ b/layers/vyos-proxy/revision
@@ -0,0 +1 @@
+0
\ No newline at end of file
diff --git a/layers/vyos-proxy/tox.ini b/layers/vyos-proxy/tox.ini
new file mode 100644
index 0000000..0b8b27a
--- /dev/null
+++ b/layers/vyos-proxy/tox.ini
@@ -0,0 +1,12 @@
+[tox]
+skipsdist=True
+envlist = py34, py35
+skip_missing_interpreters = True
+
+[testenv]
+commands = py.test -v
+deps =
+ -r{toxinidir}/requirements.txt
+
+[flake8]
+exclude=docs
diff --git a/layers/vyos-proxy/wheelhouse.txt b/layers/vyos-proxy/wheelhouse.txt
new file mode 100644
index 0000000..24d2c9c
--- /dev/null
+++ b/layers/vyos-proxy/wheelhouse.txt
@@ -0,0 +1 @@
+paramiko==2.0.1
