Class: Puma::Kubernetes::App

Inherits:
Object
  • Object
show all
Defined in:
lib/puma/kubernetes/app.rb

Instance Method Summary collapse

Constructor Details

#initialize(launcher) ⇒ App

Returns a new instance of App.



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# File 'lib/puma/kubernetes/app.rb', line 9

def initialize(launcher)
  @launcher = launcher
  clustered = (@launcher.options[:workers] || 0) > 0
  @parser = Parser.new clustered
end

Instance Method Details

#call(_env) ⇒ Object 



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# File 'lib/puma/kubernetes/app.rb', line 15

def call(_env)
  begin
    req = ::Rack::Request.new(_env)
    type = {}
    content = ''
    type = ::Kubernetes::Health::Config.response_format == 'json' ? { 'Content-Type' => 'application/json' } : { 'Content-Type' => 'text/plain' }
    case req.path_info
    when ::Kubernetes::Health::Config.route_liveness
      i_am_live = ::Kubernetes::Health::Config.live_if.arity == 0 ? ::Kubernetes::Health::Config.live_if.call : ::Kubernetes::Health::Config.live_if.call(req.params)
      http_code = i_am_live ? 200 : 503
    when ::Kubernetes::Health::Config.route_readiness
      i_am_ready = ::Kubernetes::Health::Config.ready_if.arity == 0 ? ::Kubernetes::Health::Config.ready_if.call : ::Kubernetes::Health::Config.ready_if.call(req.params)
      http_code = i_am_ready ? 200 : 503
    when ::Kubernetes::Health::Config.route_metrics
      http_code = 200
      if ::Kubernetes::Health::Config.response_format == 'json'
        content = include_puma_key_prefix(include_usage(JSON.parse(@launcher.stats))).to_json
      else
        @parser.parse include_usage(JSON.parse(@launcher.stats))
        content = Prometheus::Client::Formats::Text.marshal(Prometheus::Client.registry)
      end
    else
      http_code = 404
    end
  rescue
    http_code = 500
    content = ''
  end
  ::Kubernetes::Health::Config.request_log_callback.call(req, http_code, content)
  [http_code, type, [content]]
end

#include_puma_key_prefix(stats) ⇒ Object 



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# File 'lib/puma/kubernetes/app.rb', line 51

def include_puma_key_prefix(stats)
  result = {}
  stats.each do |k,v|
    result["puma_#{k}"] = v
  end
  result
end

#include_usage(stats) ⇒ Object 



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# File 'lib/puma/kubernetes/app.rb', line 47

def include_usage(stats)
  stats['usage'] = (1 - stats['pool_capacity'].to_f / stats['max_threads']).round(2)
  stats
end