prometheus-flask-exporter 0.0.2

Prometheus metrics exporter for Flask

# Prometheus Flask exporter

[](https://travis-ci.org/rycus86/prometheus_flask_exporter)
[](https://pypi.python.org/pypi/prometheus-flask-exporter)
[](https://pypi.python.org/pypi/prometheus-flask-exporter)
[](https://coveralls.io/github/rycus86/prometheus_flask_exporter?branch=master)
[](https://codeclimate.com/github/rycus86/prometheus_flask_exporter)

This library provides HTTP request metrics to export into
[Prometheus](https://prometheus.io/).
It can also track method invocations using convenient functions.

## Usage

```python
from flask import Flask, request
from prometheus_flask_exporter import PrometheusMetrics

app = Flask(__name__)
metrics = PrometheusMetrics(app)

@app.route('/')
def main():
pass # requests tracked by default

@app.route('/skip')
@metrics.do_not_track()
def skip():
pass # default metrics are not collected

@app.route('/<item_type>')
@metrics.do_not_track()
@metrics.counter('invocation_by_type', 'Number of invocations by type',
labels={'item_type': lambda: request.view_args['type']})
def by_type(item_type):
pass # only the counter is collected, not the default metrics

@app.route('/long-running')
@metrics.gauge('in_progress', 'Long running requests in progress')
def long_running():
pass

@app.route('/status/<int:status>')
@metrics.do_not_track()
@metrics.summary('requests_by_status', 'Request latencies by status',
labels={'status': lambda r: r.status_code})
@metrics.histogram('requests_by_status_and_path', 'Request latencies by status and path',
labels={'status': lambda r: r.status_code, 'path': lambda: request.path})
def echo_status(status):
return 'Status: %s' % status, status
```

## License

MIT