Class: GitLab::Exporter::Database::TuplesProber

Inherits:
Object
  • Object
show all
Defined in:
lib/gitlab_exporter/database/tuple_stats.rb

Overview

Probes the DB specified by opts for tuple stats, then converts them to metrics

Instance Method Summary collapse

Constructor Details

#initialize(metrics: PrometheusMetrics.new, **opts) ⇒ TuplesProber

Returns a new instance of TuplesProber.



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# File 'lib/gitlab_exporter/database/tuple_stats.rb', line 28

def initialize(metrics: PrometheusMetrics.new, **opts)
  @metrics   = metrics
  @collector = TupleStatsCollector.new(**opts)
end

Instance Method Details

#probe_db ⇒ Object 



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# File 'lib/gitlab_exporter/database/tuple_stats.rb', line 33

def probe_db
  result = @collector.run

  result.each do |table_name, tuple_stats|
    tuple_stats.each do |column_name, value|
      next if value.is_a?(Numeric)

      @metrics.add("gitlab_database_stat_table_#{column_name}",
                   value.to_f,
                   table_name: table_name)
    end
  end

  self
rescue PG::ConnectionBad
  self
end

#write_to(target) ⇒ Object 



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# File 'lib/gitlab_exporter/database/tuple_stats.rb', line 51

def write_to(target)
  target.write(@metrics.to_s)
end