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
  27         gzipped = `file -b /tmp/#{trace.id}.gpx`.chomp =~/^gzip/
  28
  29         if gzipped
  30           logger.info("gzipped")
  31         else
  32           logger.info("not gzipped")
  33         end
  34         gpx = OSM::GPXImporter.new("/tmp/#{trace.id}.gpx")
  35
  36         f_lat = 0
  37         l_lon = 0
  38         first = true
  39
  40         gpx.points do |point|
  41           if first
  42             f_lat = point['latitude']
  43             f_lon = point['longitude']
  44           end
  45
  46           tp = Tracepoint.new
  47           tp.latitude = point['latitude']
  48           tp.longitude = point['longitude']
  49           tp.altitude = point['altitude']
  50           tp.user_id = trace.user.id
  51           tp.gpx_id = trace.id
  52           tp.trackid = point['segment']
  53           tp.save!
  54         end
  55
  56         if gpx.actual_points > 0
  57           max_lat = Tracepoint.maximum('latitude', :conditions => ['gpx_id = ?', trace.id])
  58           min_lat = Tracepoint.minimum('latitude', :conditions => ['gpx_id = ?', trace.id])
  59           max_lon = Tracepoint.maximum('longitude', :conditions => ['gpx_id = ?', trace.id])
  60           min_lon = Tracepoint.minimum('longitude', :conditions => ['gpx_id = ?', trace.id])
  61
  62           trace.latitude = f_lat
  63           trace.longitude = f_lat
  64           trace.large_picture = gpx.get_picture(min_lat, min_lon, max_lat, max_lon, gpx.actual_points)
  65           trace.icon_picture = gpx.get_icon(min_lat, min_lon, max_lat, max_lon)
  66           trace.size = gpx.actual_points
  67           trace.inserted = true
  68           trace.save
  69           Notifier::deliver_gpx_success(trace, gpx.possible_points)
  70         else
  71           #trace.destroy
  72           Notifier::deliver_gpx_failure(trace, '0 points parsed ok. Do they all have lat,lng,alt,timestamp?')
  73         end
  74
  75       rescue Exception => ex
  76         #trace.destroy
  77         Notifier::deliver_gpx_failure(trace, ex.to_s + ex.backtrace.join("\n") )
  78       end
  79     end
  80   end
  81   sleep 15.minutes
  82 end