Add tool to remove grouping from report results

tools/remove_grouping_from_report_results.rb

@@ -0,0 +1,63 @@
+#!/usr/bin/env ruby
+require 'trollop'
+
+opts = Trollop.options do
+  banner "Remove extras[:grouping] from MiqReportResult#report column.\n\nUsage: ruby #{$PROGRAM_NAME} [options]\n\nOptions:\n\t"
+  opt :dry_run,    "For testing, rollback any changes when the script exits.", :short => :none, :default => false
+  opt :batch_size, "Limit memory usage by process this number of report results at a time.",    :default => 50
+  opt :count,      "Stop checking after this number of report results.",                        :default => 0
+end
+
+puts "Using options: #{opts.inspect}\n\n"
+
+if defined?(Rails)
+  puts "Warning: Rails is already loaded!  Please do not invoke using rails runner. Exiting with help text.\n\n"
+  Trollop.educate
+end
+
+# Load rails after trollop options are set.  No one wants to wait for -h.
+require File.expand_path('../config/environment', __dir__)
+
+# Wrap all changes in a transaction and roll them back if dry-run or an error occurs.
+ActiveRecord::Base.connection.begin_transaction(:joinable => false)
+
+if opts[:dry_run]
+  puts "Running in dry-run, all changes will be rolled back when complete."
+
+  at_exit do
+    ActiveRecord::Base.connection.rollback_transaction
+  end
+end
+
+start = Time.now.utc
+total = 0
+fixed = 0
+
+MiqReportResult.find_each(:batch_size => opts[:batch_size]).with_index do |rr, i|
+  begin
+    break if opts[:count].positive? && i == opts[:count]
+    total += 1
+
+    next if rr.report.nil? || rr.report.extras.nil?
+
+    if rr.report.extras.key?(:grouping)
+      rr.report.extras.except!(:grouping)
+      rr.save!
+      if rr.reload.report.extras.key?(:grouping)
+        puts "MiqReportResult: #{rr.id} could NOT be fixed"
+      else
+        puts "MiqReportResult: #{rr.id} fixed"
+        fixed += 1
+      end
+    else
+      puts "MiqReportResult: #{rr.id} doesn't need fixing"
+    end
+  rescue => err
+    puts "\nWarning: Rolling back all changes since an error occurred on MiqReportResult with id: #{rr.try(:id)}: #{err.message}"
+    ActiveRecord::Base.connection.rollback_transaction unless opts[:dry_run]
+    exit 1
+  end
+end
+
+ActiveRecord::Base.connection.commit_transaction unless opts[:dry_run]
+puts "\nProcessed #{total} rows. #{fixed} were fixed. #{Time.now.utc - start} seconds"