Class: HealthCheck::HealthCheckController

Inherits:

ActionController::Base

• Object
• ActionController::Base
• HealthCheck::HealthCheckController

Defined in:

lib/health_check/health_check_controller.rb

Instance Method Summary

• #index ⇒ Object

Instance Method Details

#index ⇒ Object

# File 'lib/health_check/health_check_controller.rb', line 12

def index
  last_modified = Time.now.utc
  max_age = HealthCheck.max_age
  if max_age > 1
    last_modified = Time.at((last_modified.to_f / max_age).floor * max_age).utc
  end
  is_public = (max_age > 1) && ! HealthCheck.basic_auth_username
  if stale?(last_modified: last_modified, public: is_public)
    checks = params[:checks] ? params[:checks].split('_') : ['standard']
    checks -= HealthCheck.middleware_checks if HealthCheck.installed_as_middleware
    begin
      errors = HealthCheck::Utils.process_checks(checks)
    rescue Exception => e
      errors = e.message.blank? ? e.class.to_s : e.message.to_s
    end
    response.headers['Cache-Control'] = "must-revalidate, max-age=#{max_age}"
    if errors.blank?
      send_response true, nil, :ok, :ok
      if HealthCheck.success_callbacks
        HealthCheck.success_callbacks.each do |callback|
          callback.call(checks)
        end 
      end
    else
      msg = HealthCheck.include_error_in_response_body ? "#{HealthCheck.failure}: #{errors}" : nil
      send_response false, msg, HealthCheck.http_status_for_error_text, HealthCheck.http_status_for_error_object
      
      # Log a single line as some uptime checkers only record that it failed, not the text returned
      msg = "#{HealthCheck.failure}: #{errors}"
      logger.send(HealthCheck.log_level, msg) if logger && HealthCheck.log_level
      if HealthCheck.failure_callbacks
        HealthCheck.failure_callbacks.each do |callback|
          callback.call(checks, msg)
        end
      end
    end
  end
end