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step_flow
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1.4.1-rc1
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0.0.1
Step flow manager for Elixir applications
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Files
lib/step_flow/metrics/workflow_collector.ex
defmodule StepFlow.Metrics.WorkflowCollector do
@moduledoc """
Prometheus metrics collector for workflow duration
"""
use Prometheus.Collector
alias StepFlow.Configuration
alias StepFlow.Workflows
require Logger
def collect_mf(_registry, callback) do
scale = Configuration.get_var_value(StepFlow.Metrics, :scale, "day")
delta = Configuration.get_var_value(StepFlow.Metrics, :delta, -1)
completed_statistics = Workflows.get_completed_statistics(scale, delta)
callback.(
create_gauge(
:step_flow_workflows_duration,
"Average durations of workflows since #{delta} #{scale}(s).",
completed_statistics
)
)
:ok
end
def collect_metrics(:step_flow_workflows_duration, statistics) do
Prometheus.Model.gauge_metrics(
Enum.map(statistics, fn %{duration: duration, identifier: identifier} ->
{[identifier: identifier], duration}
end)
)
end
defp create_gauge(name, help, data) do
Prometheus.Model.create_mf(name, help, :gauge, __MODULE__, data)
end
end