debian-mirror-gitlab/lib/gitlab/prometheus/additional_metrics_parser.rb

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module Gitlab
module Prometheus
module AdditionalMetricsParser
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CONFIG_ROOT = 'config/prometheus'.freeze
MUTEX = Mutex.new
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extend self
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def load_groups_from_yaml(file_name = 'additional_metrics.yml')
yaml_metrics_raw(file_name).map(&method(:group_from_entry))
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end
private
def validate!(obj)
raise ParsingError.new(obj.errors.full_messages.join('\n')) unless obj.valid?
end
def group_from_entry(entry)
entry[:name] = entry.delete(:group)
entry[:metrics]&.map! do |entry|
Metric.new(entry).tap(&method(:validate!))
end
MetricGroup.new(entry).tap(&method(:validate!))
end
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def yaml_metrics_raw(file_name)
load_yaml_file(file_name)&.map(&:deep_symbolize_keys).freeze
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end
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# rubocop:disable Gitlab/ModuleWithInstanceVariables
def load_yaml_file(file_name)
return YAML.load_file(Rails.root.join(CONFIG_ROOT, file_name)) if Rails.env.development?
MUTEX.synchronize do
@loaded_yaml_cache ||= {}
@loaded_yaml_cache[file_name] ||= YAML.load_file(Rails.root.join(CONFIG_ROOT, file_name))
end
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end
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# rubocop:enable Gitlab/ModuleWithInstanceVariables
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end
end
end