Module: ApplyMTA

Included in:
PEngine
Defined in:
lib/bizLogic/applymta.rb

Overview

Copyright © 2007-2008 Orangery Technology Limited You can redistribute it and/or modify it under the same terms as Ruby.

Instance Method Summary collapse

Instance Method Details

#applyMTA(startDateTime, endDateTime, policyKey, origImage, newImage) ⇒ Object 



5
6
7
8
9
10
11
12
13
14
15
16
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
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
 
# File 'lib/bizLogic/applymta.rb', line 5

def applyMTA(startDateTime,endDateTime,policyKey,origImage,newImage)     
  appliedDateTime = Time.now.strftime('%Y-%m-%d') #TODO: add time into this
  appliedDateTimeEpoch = Time.now.to_i
  
  xmldiff = determineDiff(origImage,newImage)

  doc = REXML::Document.new xmldiff

  #remove the diff records of no interest to us
  doc.elements.delete_all('//xupdate:append')
  doc.elements.delete_all('//xupdate:remove')
  doc.elements.delete_all('//xupdate:insert-after')
  doc.elements.delete_all('//xupdate:insert-before')
  doc.elements.delete_all('//xupdate:rename')

  #the reduced doc
  #puts doc.to_s

  persist = Persist.instance
  #add the MTA diff doc to the data store
  key = persist.put('UUID',doc.to_s)
  #puts "MTA diff doc key is #{key}"

  #get the doc that holds the relationship between the policy and
  #any MTA diff docs
  #if it does not exist then get! will create it
  mtas = persist.get!("#{policyKey}MTAS","<MTAS></MTAS>")
  doc = REXML::Document.new mtas
  mtasNode = REXML::XPath.first(doc, '//MTAS')
  
  #check to see if any MTAs exist that start later than this one
  #if so mark them as rolled back and store them in a
  #reapply->hash
  reapply = []
  
  elems = doc.root.get_elements('//MTAS/MTA[@startDateTime]')
  sorted = elems.map { |s| s.attributes["startDateTime"].to_s}.sort
  #puts "This new MTA starting on #{startDateTime} yields out-of-sequence node(s):"
  count = 0
  sorted.each do |sd|
    if (sd > startDateTime)
      #roll these back
      xpath = '//MTAS/MTA[@startDateTime = '+'"'+sd+'"]'
      node = REXML::XPath.first(doc, xpath)
      #puts node
      #put into reapply-array providing of course not already rolled back
      rb = node.attributes["rolledBack"]
      if (rb != "true") then
        reapply[count] = node.deep_clone
        count = count + 1
        #set current node to rolledBack
        node.attributes["rolledBack"] = true
      end
    end
  end
  #puts "No nodes qualified." unless count > 0
  #puts "\n"

  #get first node and add element with meta data relating to the MTA diff doc added above
  #meta data includes the key of the diff doc
  mtasNode.add_element('MTA',{'key' => key , 'appliedDateTimeEpoch' => appliedDateTimeEpoch, 'appliedDateTime' => appliedDateTime, 'startDateTime' => startDateTime, 'endDateTime' => endDateTime, 'rolledBack' => false})

  #check the reapply->array
  #create new entries for any in the reapply->hash with new appliedDateTime attribute values      appliedDateTime = Time.now.strftime('%Y-%m-%d') #TODO: add time into this
  reapply.each do |n|
    appliedDateTimeEpoch = appliedDateTimeEpoch + 1
    n.attributes["appliedDateTime"] = appliedDateTime
    n.attributes["appliedDateTimeEpoch"] = appliedDateTimeEpoch
    n.attributes["rolledBack"] = false
    mtasNode.add_element(n)
  end
  #puts "Final state of MTA meta data doc:"+doc.to_s

  mtaKey = persist.put("#{policyKey}MTAS",doc.to_s)
  #puts "MTAS key is still:#{mtaKey}"
  doc.to_s
end