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, #templates

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



17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
 
# File 'lib/i2x/csvdetector.rb', line 17

def detect object

  p "[i2x][CSV] Testing #{object[:uri]}"
  CSV.new(open(object[:uri]), :headers => :first_row).each do |row|
    begin
      unless object[:cache].nil? then
        p "[i2x][CSV] with cache, verifying"
        @response = Cashier.verify row[object[:cache].to_i], object, row, object[:seed]
        
      else
        p "[i2x][CSV] no cache, verifying"
        @cache = Cashier.verify row[0], object, row, object[:seed]
        
      end
    rescue Exception => e
      p "[i2x][CSVDetector] loading error: #{e.inspect}"
    end

    begin

      @cache = JSON.parse(@response, {:symbolize_names => true})
      @cache[:templates].each do |t|
        @templates.push t
      end
      # The actual processing
      #
      if @cache[:cache][:status] == 100 then

        # add row data to payload from selectors (key => key, value => column name)
        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
      p "[i2x][CSVDetector] processing error: #{e.inspect}"
    end
    @cache[:templates]
  end
end