Suggestions on generating dynamic form data

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For Robert Settlage from OOD Open Office Hours:

require 'json'
require 'open3' # Required for capture3 command line call

class CustomQueues ### GET PARTITIONS FOR THIS USER ###
  def self.queues
    @queues ||= begin
        #puts("Grabbing partitions for user.")
        sinfo_cmd = "/opt/apps/slurm/prod/bin/sinfo"
        args = ["--noheader","-o=\"%R\""]
        @partitions_available = []
        o, e, s = Open3.capture3(sinfo_cmd , *args) 
        o.each_line do |v|
          #v.gsub(/=\"(\S+)\"|=\"(\S+_p)\"/, '\1')
          @partitions_available.append(v.gsub(/=\"(\S+)\"|=\"(\S+_p)\"/, '\1'))
        end
      @partitions_available
    end
  end
end


class LmodSpiderData ### GET LMOD Spider info for interactive apps ###
    def self.spider_data
      puts("Grabbing Spider Data.")
        @spider_data ||= begin
            spider_data_file = File.open "/opt/ood_data/daily-lmod.json"
            @sd = JSON.load spider_data_file
            spider_data_file.close
            @sd
        end
    end
    def self.returnAppVersions(app_name)
      puts("Grabbed Versions for: " + app_name)
      begin
        _app_hash = spider_data[app_name]
        _app_hash.map {|k,v|  v["fullName"]}
      end
    end
end

# call these once during the initiazlier so that it'll be cached for later.
CustomQueues.queues
LmodSpiderData.spider_data

And here is the script that I run as a cronjob to generate the json data:

#!/bin/bash

# Runs LMOD Spider and generates the json file OOD needs to display modules in interactive apps.
/apps/lmod/lmod/libexec/spider -o spider-json /apps/mf/gb:/apps/mf/eb/all:/apps/easybuild/modules/all | python -mjson.tool > /opt/ood_data/daily-lmod.json