Retrospring/config/initializers/prometheus.rb

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# frozen_string_literal: true
return if Rails.env.test? # no need for the direct file store in testing
require "prometheus/client/data_stores/direct_file_store"
Rails.application.config.before_configuration do
dir = Rails.root.join("tmp/prometheus_metrics")
FileUtils.mkdir_p dir
Prometheus::Client.config.data_store = Prometheus::Client::DataStores::DirectFileStore.new(dir:)
end
Rails.application.config.after_initialize do
# ensure the version metric is populated
Retrospring::Metrics::VERSION_INFO
end