Class: I2X::CSVDetector

Inherits:
Detector show all
Defined in:
lib/i2x/csvdetector.rb

Overview

CSVDetector

Detect changes in CSV files (using column numbers).

Instance Attribute Summary

Attributes inherited from Detector

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

Instance Method Summary collapse

Methods inherited from Detector

#checkup, #initialize

Constructor Details

This class inherits a constructor from I2X::Detector

Instance Method Details

#detect(object) ⇒ Object

Detect the changes



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# File 'lib/i2x/csvdetector.rb', line 23

def detect object
  begin
    CSV.new(open(object[:uri]), :headers => :first_row).each do |row|
      unless object[:cache].nil? then
        @cache = Cashier.verify row[object[:cache].to_i], object, row, object[:seed]
      else
        @cache = Cashier.verify row[0], object, row, object[:seed]
      end
      # The actual processing
      #
      if @cache[:status] == 100 then

        # add row data to payload from selectors (key => key, value => column name)
        payload = Hash.new
        JSON.parse(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
    end
  rescue Exception => e
    I2X::Slog.exception e
  end
end