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} (#{trace.id}) 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
  36         gpx = OSM::GPXImporter.new("/home/osm/gpx/#{trace.id}.gpx")
  37
  38         f_lat = 0
  39         f_lon = 0
  40         first = true
  41
  42         gpx.points do |point|
  43           if first
  44             f_lat = point['latitude']
  45             f_lon = point['longitude']
  46           end
  47
  48           tp = Tracepoint.new
  49           tp.lat = point['latitude'].to_f
  50           tp.lng = point['longitude'].to_f
  51           tp.altitude = point['altitude'].to_f
  52           tp.user_id = trace.user.id
  53           tp.gpx_id = trace.id
  54           tp.trackid = point['segment'].to_i
  55           tp.save!
  56         end
  57
  58         if gpx.actual_points > 0
  59           max_lat = Tracepoint.maximum('latitude', :conditions => ['gpx_id = ?', trace.id])
  60           min_lat = Tracepoint.minimum('latitude', :conditions => ['gpx_id = ?', trace.id])
  61           max_lon = Tracepoint.maximum('longitude', :conditions => ['gpx_id = ?', trace.id])
  62           min_lon = Tracepoint.minimum('longitude', :conditions => ['gpx_id = ?', trace.id])
  63
  64           max_lat = max_lat.to_f / 1000000
  65           min_lat = min_lat.to_f / 1000000
  66           max_lon = max_lon.to_f / 1000000
  67           min_lon = min_lon.to_f / 1000000
  68
  69           trace.latitude = f_lat
  70           trace.longitude = f_lon
  71           trace.large_picture = gpx.get_picture(min_lat, min_lon, max_lat, max_lon, gpx.actual_points)
  72           trace.icon_picture = gpx.get_icon(min_lat, min_lon, max_lat, max_lon)
  73           trace.size = gpx.actual_points
  74           trace.inserted = true
  75           trace.save
  76
  77           logger.info "done trace #{trace.id} -------------------------------------------------------------------------------"
  78     #      Notifier::deliver_gpx_success(trace, gpx.possible_points)
  79         else
  80           #trace.destroy
  81 #          Notifier::deliver_gpx_failure(trace, '0 points parsed ok. Do they all have lat,lng,alt,timestamp?')
  82         end
  83
  84       rescue Exception => ex
  85         logger.info ex
  86         ex.backtrace.each {|l| logger.info l }
  87         #trace.destroy
  88  #       Notifier::deliver_gpx_failure(trace, ex.to_s + ex.backtrace.join("\n") )
  89       end
  90     end
  91   end
  92   sleep 15.minutes
  93 end