lib/daemons/gpx_import.rb

   1 #!/usr/bin/env ruby
   2
   3 #You might want to change this
   4 ENV["RAILS_ENV"] ||= "development"
   5
   6 require File.dirname(__FILE__) + "/../../config/environment"
   7
   8 $running = true;
   9 Signal.trap("TERM") do
  10   $running = false
  11 end
  12
  13 logger = ActiveRecord::Base.logger
  14
  15 while($running) do
  16
  17   ActiveRecord::Base.logger.info("GPX Import daemon wake @ #{Time.now}.")
  18
  19   traces = Trace.find(:all, :conditions => ['inserted = ?', false])
  20
  21   if traces and traces.length > 0
  22     traces.each do |trace|
  23       begin
  24
  25         logger.info("GPX Import importing #{trace.name} from #{trace.user.email}")
  26 \r
  27         # TODO *nix specific, could do to work on windows... would be functionally inferior though - check for '.gz'
  28         gzipped = `file -b /tmp/#{trace.id}.gpx`.chomp =~/^gzip/\r
  29
  30         if gzipped
  31           logger.info("gzipped")
  32         else
  33           logger.info("not gzipped")
  34         end
  35         gpx = OSM::GPXImporter.new("/tmp/#{trace.id}.gpx")
  36
  37         f_lat = 0
  38         l_lon = 0
  39         first = true
  40
  41         gpx.points do |point|
  42           if first
  43             f_lat = point['latitude']
  44             f_lon = point['longitude']
  45           end
  46
  47           tp = Tracepoint.new
  48           tp.latitude = point['latitude']
  49           tp.longitude = point['longitude']
  50           tp.altitude = point['altitude']
  51           tp.user_id = trace.user.id
  52           tp.gpx_id = trace.id
  53           tp.trackid = point['segment']
  54           tp.save!
  55         end
  56
  57         if gpx.actual_points > 0
  58           max_lat = Tracepoint.maximum('latitude', :conditions => ['gpx_id = ?', trace.id])
  59           min_lat = Tracepoint.minimum('latitude', :conditions => ['gpx_id = ?', trace.id])
  60           max_lon = Tracepoint.maximum('longitude', :conditions => ['gpx_id = ?', trace.id])
  61           min_lon = Tracepoint.minimum('longitude', :conditions => ['gpx_id = ?', trace.id])
  62
  63           trace.latitude = f_lat
  64           trace.longitude = f_lon
  65           trace.large_picture = gpx.get_picture(min_lat, min_lon, max_lat, max_lon, gpx.actual_points)
  66           trace.icon_picture = gpx.get_icon(min_lat, min_lon, max_lat, max_lon)
  67           trace.size = gpx.actual_points
  68           trace.inserted = true
  69           trace.save
  70           Notifier::deliver_gpx_success(trace, gpx.possible_points)
  71         else
  72           #trace.destroy
  73           Notifier::deliver_gpx_failure(trace, '0 points parsed ok. Do they all have lat,lng,alt,timestamp?')
  74         end
  75
  76       rescue Exception => ex
  77         #trace.destroy
  78         Notifier::deliver_gpx_failure(trace, ex.to_s + ex.backtrace.join("\n") )
  79       end
  80     end
  81   end
  82   sleep 15.minutes
  83 end