139 lines
3.3 KiB
Ruby
139 lines
3.3 KiB
Ruby
require 'net/http'
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HOST = "http://localhost:#{OSRM_PORT}"
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REQUEST_TIMEOUT = 1
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DESTINATION_REACHED = 15 #OSRM instruction code
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class Hash
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def to_param(namespace = nil)
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collect do |key, value|
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"#{key}=#{value}"
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end.sort
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end
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end
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def request_path path, waypoints=[], options={}
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locs = waypoints.compact.map { |w| "loc=#{w.lat},#{w.lon}" }
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params = (locs + options.to_param).join('&')
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params = nil if params==""
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uri = URI.parse ["#{HOST}/#{path}", params].compact.join('?')
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Timeout.timeout(REQUEST_TIMEOUT) do
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Net::HTTP.get_response uri
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end
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rescue Errno::ECONNREFUSED => e
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raise "*** osrm-routed is not running."
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rescue Timeout::Error
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raise "*** osrm-routed did not respond."
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end
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def request_route waypoints, params={}
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defaults = { 'output' => 'json', 'instructions' => true, 'alt' => false }
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request_path "viaroute", waypoints, defaults.merge(params)
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end
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def parse_response response
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if response.code == "200" && response.body.empty? == false
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json = JSON.parse response.body
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if json['status'] == 0
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route = way_list json['route_instructions']
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if route.empty?
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"Empty route: #{json['route_instructions']}"
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else
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"Route: #{route}"
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end
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elsif json['status'] == 207
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"No route"
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else
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"Status: #{json['status']}"
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end
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else
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"HTTP: #{response.code}"
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end
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end
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def got_route? response
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if response.code == "200" && !response.body.empty?
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json = JSON.parse response.body
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if json['status'] == 0
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return way_list( json['route_instructions']).empty? == false
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end
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end
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false
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end
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def route_status response
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if response.code == "200" && !response.body.empty?
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json = JSON.parse response.body
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if json['status'] == 0
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if way_list( json['route_instructions']).empty?
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return 'Empty route'
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else
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return 'x'
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end
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elsif json['status'] == 207
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''
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else
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"Status #{json['status']}"
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end
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else
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"HTTP #{response.code}"
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end
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end
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def way_list instructions
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instructions.reject { |r| r[0].to_s=="#{DESTINATION_REACHED}" }.
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map { |r| r[1] }.
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map { |r| r=="" ? '""' : r }.
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join(',')
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end
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def compass_list instructions
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instructions.reject { |r| r[0].to_s=="#{DESTINATION_REACHED}" }.
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map { |r| r[6] }.
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map { |r| r=="" ? '""' : r }.
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join(',')
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end
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def bearing_list instructions
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instructions.reject { |r| r[0].to_s=="#{DESTINATION_REACHED}" }.
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map { |r| r[7] }.
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map { |r| r=="" ? '""' : r }.
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join(',')
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end
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def turn_list instructions
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types = {
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0 => :none,
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1 => :straight,
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2 => :slight_right,
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3 => :right,
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4 => :sharp_right,
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5 => :u_turn,
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6 => :sharp_left,
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7 => :left,
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8 => :slight_left,
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9 => :via,
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10 => :head,
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11 => :enter_roundabout,
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12 => :leave_roundabout,
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13 => :stay_roundabout,
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14 => :start_end_of_street,
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15 => :destination,
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16 => :enter_contraflow,
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17 => :leave_contraflow
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}
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# replace instructions codes with strings
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# "11-3" (enter roundabout and leave a 3rd exit) gets converted to "enter_roundabout-3"
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instructions.map do |r|
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r[0].to_s.gsub!(/^\d*/) do |match|
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types[match.to_i].to_s
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end
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end.join(',')
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end
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def mode_list instructions
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instructions.reject { |r| r[0].to_s=="#{DESTINATION_REACHED}" }.
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map { |r| r[8] }.
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map { |r| (r=="" || r==nil) ? '""' : r }.
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join(',')
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end |