initial commit

.gitignore

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+# Idea
+.idea
+*.iml
+
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+env/
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+bin/
+*.zip
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+.hypothesis/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# pyenv
+.python-version
+
+# celery beat schedule file
+celerybeat-schedule
+
+# SageMath parsed files
+*.sage.py
+
+# dotenv
+.env
+
+# virtualenv
+.venv
+venv/
+ENV/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/

LICENSE.md

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+Copyright (c) 2017 Dennis Webb
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

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+# OpenVPN DataDog Agent
+
+Adds OpenVPN licensing stats to DataDog.
+
+![](../master/screenshot.png)
+
+## Installation
+
+### Automated
+
+The included [install.sh](install.sh) script will copy the files to the correct locations, give `dd-agent` permissions to interact with OpenVPN, and restart the agent.
+
+### Manual
+
+1. Copy [openvpn.py](openvpn.py) to `/etc/dd-agent/checks.d`
+2. Copy [openvpn.yaml](openvpn.yaml) to `/etc/dd-agent/conf.d`
+3. Add `dd-agent ALL=NOPASSWD: /usr/local/openvpn_as/scripts/sacli` to `/etc/sudoers` using `visudo`
+4. Restart the agent with `/etc/init.d/datadog-agent restart`

build_release.sh

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+#!/usr/bin/env bash
+zip datadog-openvpn.zip *.py *.yaml *.md install.sh

install.sh

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+cp openvpn.py /etc/dd-agent/checks.d/openvpn.py
+cp openvpn.yaml /etc/dd-agent/conf.d/openvpn.yaml
+
+echo 'dd-agent ALL=NOPASSWD: /usr/local/openvpn_as/scripts/sacli' | sudo EDITOR='tee -a' visudo
+
+/etc/init.d/datadog-agent restart

openvpn.py

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+import ast
+from checks import AgentCheck
+from subprocess import check_output
+
+
+class OpenVPN(AgentCheck):
+
+
+    def check(self, instance):
+        metric_prefix = self.init_config.get('metric_prefix', 'openvpn')
+        license_usage = self.get_license_usage()
+        self.gauge('%s.licenses_used' % metric_prefix, license_usage['used'])
+        self.gauge('%s.licenses_available' % metric_prefix, license_usage['available'])
+        self.gauge('%s.licenses_total' % metric_prefix, license_usage['total'])
+
+
+    def get_license_usage(self):
+        sacli_path = self.init_config.get('sacli_path', '/usr/local/openvpn_as/scripts/sacli')
+        lic_usage = ast.literal_eval(check_output(["sudo", sacli_path, "LicUsage"]))
+        return {
+                    'used': lic_usage[0],
+                    'total': lic_usage[1],
+                    'available': lic_usage[1] - lic_usage[0]
+                }
+
+
+if __name__ == '__main__':
+    check.check(instance)

openvpn.yaml

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+init_config:
+  metric_prefix: openvpn
+  sacli_path: /usr/local/openvpn_as/scripts/sacli
+
+instances:
+    [{}]
+