Class: ARII::ExcelDetector

Inherits:
Detector show all
Defined in:
lib/arii/exceldetector.rb

Overview

ExcelDetector

Detect changes in excel files .

Instance Attribute Summary

Attributes inherited from Detector

#agent, #content, #identifier, #objects, #payloads, #templates

Instance Method Summary collapse

Methods inherited from Detector

#checkup, #initialize

Constructor Details

This class inherits a constructor from ARII::Detector

Instance Method Details

#detect(object) ⇒ Object

Detect the changes



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# File 'lib/arii/exceldetector.rb', line 18

def detect object

  ARII::Config.log.debug(self.class.name) { "Monitoring #{object[:uri]}" }

  # update headers default behaviour
  begin
    if object[:headers] == ''
      object[:headers] = 0
    end
  rescue Exception => e
    ARII::Config.log.error(self.class.name) { "Processing error on errors: #{e}" }
  end



  # different gems and implementation for XLSX and XLS
  if object[:uri].end_with? 'xlsx'
    ARII::Config.log.debug(self.class.name) { "Loading RubyXL for #{object[:uri]}" }
    book = RubyXL::Parser.parse(open(object[:uri]))


    begin
      if object[:sheet] != ''
        sheet = book[object[:sheet]]
      else
        sheet = book[0]
      end
    rescue Exception => e
      ARII::Config.log.error(self.class.name) { "Processing error on sheet selection: #{e}" }
    end

    ARII::Config.log.debug(self.class.name) { "Initiating data extraction" }
    sheet.extract_data.drop(object[:headers].to_i).each do |row|


      begin
        unless object[:cache].nil?
          @response = Cashier.verify row[object[:cache].to_i], object, row, object[:seed]
        else
          @response = Cashier.verify row[0], object, row, object[:seed]
        end
      rescue Exception => e
        ARII::Config.log.error(self.class.name) { "Processing error on cache verification: #{e}" }
      end
      begin

        # Process ARIIcache response
        @cache = JSON.parse(@response, {:symbolize_names => true})

        unless @cache[:templates].nil? then
          @cache[:templates].each do |t|
            @templates.push t
          end
        end

        # The actual processing
        #
        if @cache[:cache][:status] == 100 then
          ARII::Config.log.info(self.class.name) { "Not on cache, generating payload" }

          payload = Hash.new

          object[:selectors].each do |selector|
            selector.each do |k, v|
              payload[k] = row[v.to_i]
            end
          end

          # add payload object to payloads list
          @payloads.push payload
        end

      rescue Exception => e
        ARII::Config.log.error(self.class.name) { "Processing error: #{e}\n#{e.backtrace}" }
      end
    end
  end


  if object[:uri].end_with? 'xls'
    Spreadsheet.client_encoding = 'UTF-8'
    book = Spreadsheet.open(open(object[:uri]))

    if object[:sheet] != ''
      sheet = book.worksheet [object[:sheet]]
    else
      sheet = book.worksheet 0
    end



    sheet.each object[:headers].to_i do |row|
      unless object[:cache].nil?
        @response = Cashier.verify row[object[:cache].to_i], object, row, object[:seed]
      else
        @response = Cashier.verify row[0], object, row, object[:seed]
      end


      begin

        # Process ARIIcache response
        @cache = JSON.parse(@response, {:symbolize_names => true})
        unless @cache[:templates].nil? then
          @cache[:templates].each do |t|
            @templates.push t
          end
        end

        # The actual processing
        #
        if @cache[:cache][:status] == 100 then
          ARII::Config.log.info(self.class.name) { "Not on cache, generating payload" }

          payload = Hash.new

          object[:selectors].each do |selector|
            selector.each do |k, v|
              payload[k] = row[v.to_i]
            end
          end

          # add payload object to payloads list
          @payloads.push payload
        end

      rescue Exception => e
        ARII::Config.log.error(self.class.name) { "Processing error: #{e}\n#{e.backtrace}" }
      end


    end
  end

  @cache[:templates]
end