Module: GlobalErrorHandler::Server

Defined in:
lib/global_error_handler/server.rb

Overview

:nodoc:

Constant Summary collapse

GEH_VIEW_PATH = 
File.join(File.dirname(__FILE__), 'server', 'views')
GEH_PUBLIC_PATH = 
File.join(File.dirname(__FILE__), 'server', 'public')

Class Method Summary collapse

Class Method Details

.registered(app) ⇒ Object 



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# File 'lib/global_error_handler/server.rb', line 6

def self.registered(app)
  app.get '/exceptions' do
    key = params.keys.first
    if %w(js css).include? key
      geh_public_view params[key], key
    else
      prepare_and_show_index_action
    end
  end

  app.get '/exceptions/filter/:filter_by/:filter' do
    prepare_and_show_index_action
  end

  app.get '/exceptions/:id' do
    @app_exception = AppException.find(params[:id])
    show_view :show
  end

  app.delete '/exceptions/filter/:filter_by/:filter/truncate' do
    truncate_and_redirect_to_exceptions
  end

  app.delete '/exceptions/truncate' do
    truncate_and_redirect_to_exceptions
  end

  app.delete '/exceptions/delete' do
    AppException.delete_all(params[:app_exception_delete_ids])
    redirect_to_exceptions
  end

  app.delete '/exceptions/:id' do
    AppException.delete(params[:id])
    redirect_to_exceptions
  end

  app.tabs << 'Exceptions'

  require 'action_view'
  app.helpers do
    include ActionView::Helpers::TextHelper # link_to
    include ActionView::Helpers::UrlHelper # simple_format
    include ActionView::Helpers::FormHelper # select_tag check_box_tag
    include ActionView::Helpers::FormOptionsHelper # options_for_select
    include ActionView::Helpers::OutputSafetyHelper # delete via ajax

    def prepare_and_show_index_action
      @app_exceptions = AppException.all(params[:start], params[:filter_by], fetch_filter)
      @all_classes = AppException.filters_for('class')
      @all_messages = AppException.filters_for('message')
      show_view :index
    end

    def truncate_and_redirect_to_exceptions
      AppException.truncate(fetch_filter, field: params[:filter_by], total: apps_size)
      redirect exceptions_path
    end

    def redirect_to_exceptions
      redirect exceptions_path(params[:start], params[:filter_by], params[:filter])
    end

    def show_view(filename = :index)
      erb haml(File.read(File.join(GEH_VIEW_PATH, "#{filename}.html.haml")))
    end

    def geh_public_view(filename, dir = '')
      file = File.join(GEH_PUBLIC_PATH, dir, filename)
      begin
        cache_control :public, max_age: 1800
        send_file file
      rescue Errno::ENOENT
        404
      end
    end

    def exceptions_path(start = nil, filter_by = nil, filter = nil)
      path = '/resque/exceptions'
      path += "/filter/#{filter_by}/#{URI.escape(filter)}" if filter_by && filter
      path += "?start=#{start}" if start
      path
    end

    def exception_path(id, start = nil, filter_by = nil, filter = nil)
      path = "/resque/exceptions/#{id}"
      path_params = []
      path_params.push "start=#{start}" if start
      path_params.push "filter_by=#{filter_by}&filter=#{URI.escape(filter)}" if filter_by && filter
      path += '?' + path_params.join('&') if path_params.size > 0
      path
    end

    def apps_size
      @apps_size ||= AppException.count(params[:filter_by], fetch_filter).to_i
    end

    def apps_start_at
      return 0 if apps_size < 1
      params[:start].to_i + 1
    end

    def apps_per_page
      10
    end

    def apps_end_at
      if apps_start_at + apps_per_page > apps_size
        apps_size
      else
        apps_start_at + apps_per_page - 1
      end
    end

    def each_app_exception
      return unless block_given?
      @app_exceptions.try(:each) do |app_exception|
        yield app_exception
      end
    end

    def pagination(options = {})
      start    = options[:start] || 0
      per_page = apps_per_page
      total    = options[:total] || 0
      return if total < per_page

      markup = ''
      if start - per_page >= 0
        markup << link_to(raw('&laquo; less'), exceptions_path(start - per_page), class: 'btn less')
      elsif start > 0 && start < per_page
        markup << link_to(raw('&laquo; less'), exceptions_path(0), class: 'btn less')
      end

      markup << pages_markup(start, per_page, total)

      if start + per_page < total
        markup << link_to(raw('more &raquo;'), exceptions_path(start + per_page), class: 'btn more')
      end
      markup
    end

    def pages_markup(start, per_page, total)
      pages_count = ((total - 1) / per_page).ceil
      return '' if pages_count < 1

      left_ind = start / per_page
      markups = [left_ind.to_s]
      while (left_ind -= 1) >= 0 && (start / per_page - left_ind <= max_side_links || pages_count < max_links)
        markups.unshift link_to(left_ind, exceptions_path(left_ind * per_page, params[:filter_by], params[:filter]), class: 'btn pages')
      end
      right_ind = start / per_page
      if right_ind > max_side_links && pages_count >= max_links
        markups.unshift '...' if right_ind - max_side_links > 1
        markups.unshift link_to(0, exceptions_path(0, params[:filter_by], params[:filter]), class: 'btn pages')
      end
      while (right_ind += 1) * per_page < total && (right_ind - start / per_page <= max_side_links || pages_count < max_links)
        markups.push link_to(right_ind, exceptions_path(per_page * right_ind, params[:filter_by], params[:filter]), class: 'btn pages')
      end
      if pages_count >= max_links && pages_count >= right_ind
        markups.push '...' if pages_count - right_ind >= 1
        markups.push link_to(pages_count, exceptions_path(pages_count * per_page, params[:filter_by], params[:filter]), class: 'btn pages')
      end
      markups.join(' ')
    end

    def max_side_links
      4
    end

    def max_links
      max_side_links * 2 + 1
    end

    def fetch_filter
      URI.unescape(params[:filter]) if params[:filter]
    end
  end
end