prometheus-aioexporter 0.2.0

# prometheus-aioexporter - Asyncio library for creating Prometheus exporters

[](https://pypi-hypernode.com/pypi/prometheus-aioexporter)
[](https://travis-ci.org/albertodonato/prometheus-aioexporter)
[](https://codecov.io/gh/albertodonato/prometheus-aioexporter)

prometheus-aioexporter is an aysncio-powered library that provides a few
utilities to build [Prometheus](https://prometheus.io/) exporters.


## Install

The library can be installed from pip:

```bash
pip install prometheus-aioexporter
```

## Usage

The library provides a `PrometheusExporterScript` class that serves as an entry
point to create services that export Prometheus metrics via an HTTP endpoint.

An example usage is the following:

```python
from prometheus_aioexporter.script import PrometheusExporterScript


class MyExporter(PrometheusExporterScript):
'''My Prometheus exporter.'''

def configure_argument_parser(self, parser):
# Additional arguments to the script
parser.add_argument('an-option', help='an option')
...

def configure(self, args):
# Save attributes that are needed for later
self.data = do_stuff()
...

def on_application_startup(self, application):
# Start other asyncio tasks at application startup
use(self.data)
...

def on_application_shutdown(self, application):
# Stop other asyncio tasks at application shutdown
use(self.data)
...


script = MyExporter()
```

The `script` variable can be referenced in `setup.py` to generate the script, like

```python
setup(
...,
entry_points={'console_scripts': [script = path.to.script:script']},
...)
```

`PrometheusExporterScript` provides the following arguments by default, which can be
exended by implementing `configure_argument_parser()`:


```
optional arguments:
-h, --help show this help message and exit
-H HOST, --host HOST host address to bind (default: localhost)
-p PORT, --port PORT port to run the webserver on (default: 9090)
-L {CRITICAL,ERROR,WARNING,INFO,DEBUG}, --log-level {CRITICAL,ERROR,WARNING,INFO,DEBUG}
minimum level for log messages (default: WARNING)
--process-stats include process stats in metrics (default: False)
```