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The first issue was how to save the state to disk. I decided to go with marshalling and saving the part of the [nested hash structure |http://users.telenet.be/jurgen.kobierczynski/jkflow/mylist.pdf] containing the current scoreboard to disk. Specifically, mylist \{direction\}\{$direction\} \{scoreboard\} \{aggregate\} \{report\} points to an array of nested hashes , one for each type of report defined (as shown highlighted in the thumbnail below). ( let $ref = mylist \{direction\}\{$direction\} \{scoreboard\} \{aggregate\} \{report\}\[$i\] for the $ith report type ). Then $ref->\{aggdata\}\{tuplevalues\} contains a nested hash containing the current counters for the flows/packets/bytes both inward and outward for a particular 'direction'(Such as ATLAS BNL to CERN' ) specified by the $direction variable in mylist.!datastructure.JPG|thumbnail! |
I create a temporary data strcuture ,each time the scoreboarding function is called in JKFlow.pm , and store the values of $ref->{aggdata}{tuplevalues} as well as certain other important variables representing the state
I am using a module written