Module: Instana::Instrumentation::ActionControllerCommon

Included in:
ActionController, ActionControllerLegacy
Defined in:
lib/instana/frameworks/instrumentation/action_controller.rb

Overview

Contains the methods common to both ::Instana::Instrumentation::ActionController and ::Instana::Instrumentation::ActionControllerLegacy

Instance Method Summary collapse

Instance Method Details

#get_render_topic(opts) ⇒ Object

Render can be called with many options across the various supported versions of Rails. This method attempts to make sense and provide insight into what is happening (rendering a layout, file, nothing, plaintext etc.)



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# File 'lib/instana/frameworks/instrumentation/action_controller.rb', line 32

def get_render_topic(opts)
  if opts.key?(:layout)
    case opts[:layout]
    when FalseClass
      name = "Without layout"
    when String
      name = opts[:layout]
    when Proc
      name = "Proc"
    else
      name = "Default"
    end
  end
  name ||= opts[:template]
  name ||= opts[:file]
  name = "Nothing" if opts[:nothing]
  name = "Plaintext" if opts[:plain]
  name = "JSON" if opts[:json]
  name = "XML" if opts[:xml]
  name = "Raw" if opts[:body]
  name = "Javascript" if opts[:js]
  name
end

#has_rails_handler? ⇒ Boolean

Indicates whether a Controller rescue handler is in place. If so, this affects error logging and reporting. (Hence the need for this method).

Returns:

  • (Boolean) 


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# File 'lib/instana/frameworks/instrumentation/action_controller.rb', line 14

def has_rails_handler?
  found = false
  rescue_handlers.detect do |klass_name, _handler|
    # Rescue handlers can be specified as strings or constant names
    klass = self.class.const_get(klass_name) rescue nil
    klass ||= klass_name.constantize rescue nil
    found = exception.is_a?(klass) if klass
  end
  found
rescue => e
  ::Instana.logger.debug "#{__method__}:#{File.basename(__FILE__)}:#{__LINE__}: #{e.message}"
  return false
end