Module: TraceView::Inst::RailsBase

Included in:
ActionController3, ActionController4
Defined in:
lib/traceview/frameworks/rails/inst/action_controller.rb

Overview

RailsBase

This module contains the instrumentation code common to many Rails versions.

Instance Method Summary collapse

Instance Method Details

#has_handler?(exception) ⇒ Boolean

has_handler?

Determins if exception has a registered handler via rescue_from

Returns:

  • (Boolean) 


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# File 'lib/traceview/frameworks/rails/inst/action_controller.rb', line 19

def has_handler?(exception)
  # Don't log exceptions if they have a rescue handler set
  has_handler = false
  rescue_handlers.detect { | 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
    has_handler = exception.is_a?(klass) if klass
  }
  has_handler
rescue => e
  TraceView.logger.debug "[traceview/debug] Error searching Rails handlers: #{e.message}"
  return false
end

#log_rails_error?(exception) ⇒ Boolean

log_rails_error?

Determins whether we should log a raised exception to the TraceView dashboard. This is determined by whether the exception has a rescue handler setup and the value of TraceView::Config

Returns:

  • (Boolean) 


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# File 'lib/traceview/frameworks/rails/inst/action_controller.rb', line 42

def log_rails_error?(exception)
  # As it's perculating up through the layers...  make sure that
  # we only report it once.
  return false if exception.instance_variable_get(:@traceview_logged)

  has_handler = has_handler?(exception)

  if !has_handler || (has_handler && TraceView::Config[:report_rescued_errors])
    return true
  end
  false
end

#render_with_traceview(*args, &blk) ⇒ Object

render_with_traceview

Our render wrapper that just times and conditionally reports raised exceptions



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# File 'lib/traceview/frameworks/rails/inst/action_controller.rb', line 61

def render_with_traceview(*args, &blk)
  TraceView::API.log_entry('actionview')
  render_without_traceview(*args, &blk)

rescue Exception => e
  TraceView::API.log_exception(nil, e) if log_rails_error?(e)
  raise
ensure
  TraceView::API.log_exit('actionview')
end