LaravelPrometheusExporter

A laravel and lumen service provider to export metrics for prometheus.

Supported laravel versions

Supported lumen versions

Main features

• Metrics with APC
• Metrics with Redis
• Metrics with InMemory
• Metrics with the push gateway
• Request per route middleware (total and duration metrics)

Installation

Composer

composer require triadev/laravel-prometheus-exporter

Application

The package is registered through the package discovery of laravel and Composer.

https://laravel.com/docs/5.8/packages

Once installed you can now publish your config file and set your correct configuration for using the package.

php artisan vendor:publish --provider="Triadev\PrometheusExporter\Provider\PrometheusExporterServiceProvider" --tag="config"

This will create a file config/prometheus-exporter.php.

Configuration

Key	Env	Value	Description	Default
adapter	PROMETHEUS_ADAPTER	STRING	apc, redis, inmemory or push	apc
namespace	---	STRING	default: app	app
namespace_http	---	STRING	namespace for "RequestPerRoute-Middleware metrics"	http
redis.host	PROMETHEUS_REDIS_HOST, REDIS_HOST	STRING	redis host	127.0.0.1
redis.port	PROMETHEUS_REDIS_PORT, REDIS_PORT	INTEGER	redis port	6379
redis.password	PROMETHEUS_REDIS_PASSWORD, REDIS_PASSWORD	STRING	redis password	null
redis.timeout	---	FLOAT	redis timeout	0.1
redis.read_timeout	---	INTEGER	redis read timeout	10
push_gateway.address	PROMETHEUS_PUSH_GATEWAY_ADDRESS	STRING	push gateway address	localhost:9091
buckets_per_route	---	STRING	histogram buckets for "RequestPerRoute-Middleware"	---

buckets_per_route

'buckets_per_route' => [
    ROUTE-NAME => [10,20,50,100,200],
    ...
]

Usage

Get metrics

Laravel

When you are using laravel you can use the default http endpoint:

triadev/pe/metrics

Of course you can also register your own route. Here is an example:

Route::get(
    ROUTE,
    \Triadev\PrometheusExporter\Controller\LaravelController::class . '@metrics'
);

Lumen

When you are using lumen you must register the route on your own. Here is an example:

Route::get(
    ROUTE,
    \Triadev\PrometheusExporter\Controller\LumenController::class . '@metrics'
);

Middleware

RequestPerRoute

A middleware to build metrics for "request_total" and "requests_latency_milliseconds" per route.

Alias

lpe.requestPerRoute

Metrics

1. requests_total (inc)
2. requests_latency_milliseconds (histogram)

Example

$router->get('/test/route', function () {
    return 'valid';
})->middleware('lpe.requestPerRoute');

app_requests_latency_milliseconds_bucket{route="/test/route",method="GET",status_code="200",le="0.005"} 0 ... app_requests_latency_milliseconds_count{route="/test/route",method="GET",status_code="200"} 1 app_requests_latency_milliseconds_sum{route="/test/route",method="GET",status_code="200"} 6 app_requests_total{route="/test/route",method="GET",status_code="200"} 1

Roadmap

• histogram buckets per route (RequestPerRoute)

Reporting Issues

If you do find an issue, please feel free to report it with GitHub's bug tracker for this project.

Alternatively, fork the project and make a pull request. :)

Testing

1. docker-compose up
2. docker exec fpm ./vendor/phpunit/phpunit/phpunit

Contributing

Please see CONTRIBUTING for details.

Credits

• Christopher Lorke
• All Contributors

Other

Project related links

• Wiki
• Issue tracker

Author

• Christopher Lorke

License

The code for LaravelPrometheusExporter is distributed under the terms of the MIT license (see LICENSE).