PrometheusPhoenix

Metrics

• phoenix_controller_call_duration_microseconds - Whole controller pipeline execution time.

  Labels:

  • :controller
  • :action
  • :method
  • :scheme
  • :host
  • :port

Configuration

This integartion is configured via PhoenixInstrumenter :prometheus app env key

Default configuration:

config :prometheus, PhoenixInstrumenter,
  labels: [:controller, :action],
  duration_buckets: [10, 100, 1_000, 10_000, 100_000, 300_000,
                     500_000, 750_000, 1_000_000, 1_500_000,
                     2_000_000, 3_000_000]

Duration units are microseconds. You can find more on what stages are available and their description here.

With this configuration scrape will look like this:

# TYPE phoenix_controller_call_duration_microseconds histogram
# HELP phoenix_controller_call_duration_microseconds Whole controller pipeline execution time.
phoenix_controller_call_duration_microseconds_bucket{controller="Controller1",action="index",le="10"} 0
phoenix_controller_call_duration_microseconds_bucket{controller="Controller1",action="index",le="100"} 0
phoenix_controller_call_duration_microseconds_bucket{controller="Controller1",action="index",le="1000"} 0
phoenix_controller_call_duration_microseconds_bucket{controller="Controller1",action="index",le="10000"} 1
phoenix_controller_call_duration_microseconds_bucket{controller="Controller1",action="index",le="100000"} 1
phoenix_controller_call_duration_microseconds_bucket{controller="Controller1",action="index",le="300000"} 1
phoenix_controller_call_duration_microseconds_bucket{controller="Controller1",action="index",le="500000"} 1
phoenix_controller_call_duration_microseconds_bucket{controller="Controller1",action="index",le="750000"} 1
phoenix_controller_call_duration_microseconds_bucket{controller="Controller1",action="index",le="1000000"} 1
phoenix_controller_call_duration_microseconds_bucket{controller="Controller1",action="index",le="1500000"} 1
phoenix_controller_call_duration_microseconds_bucket{controller="Controller1",action="index",le="2000000"} 1
phoenix_controller_call_duration_microseconds_bucket{controller="Controller1",action="index",le="3000000"} 1
phoenix_controller_call_duration_microseconds_bucket{controller="Controller1",action="index",le="+Inf"} 1
phoenix_controller_call_duration_microseconds_count{controller="Controller1",action="index"} 1
phoenix_controller_call_duration_microseconds_sum{controller="Controller1",action="index"} 7823

Installation

Available in Hex, the package can be installed as:

1. Add prometheus_phoenix to your list of dependencies in mix.exs:

```elixir
def deps do
  [{:prometheus_phoenix, "~> 0.0.4"}]
end
```

1. Ensure prometheus_phoenix is started before your application:

```elixir
def application do
  [applications: [:prometheus_phoenix]]
end
```