X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/c5d1f3381dfa81b4aac2d24dd057143bafbf661c..24ac6b49f76d91722f26a095e7c27df49df26a0a:/app/controllers/api_controller.rb?ds=sidebyside diff --git a/app/controllers/api_controller.rb b/app/controllers/api_controller.rb index 8261e56aa..a17e630c2 100644 --- a/app/controllers/api_controller.rb +++ b/app/controllers/api_controller.rb @@ -1,24 +1,34 @@ class ApiController < ApplicationController - before_filter :authorize + session :off + before_filter :check_read_availability, :except => [:capabilities] after_filter :compress_output - helper :user - model :user - - #COUNT is the number of map requests to allow before exiting and stating a new process + #COUNT is the number of map requests to allow before exiting and starting a new process @@count = COUNT - def authorize_web - @current_user = User.find_by_token(session[:token]) - end - # The maximum area you're allowed to request, in square degrees MAX_REQUEST_AREA = 0.25 - def map + + # Number of GPS trace/trackpoints returned per-page + TRACEPOINTS_PER_PAGE = 5000 + + def trackpoints @@count+=1 - response.headers["Content-Type"] = 'text/xml' + #retrieve the page number + page = params['page'].to_i + unless page + page = 0; + end + + unless page >= 0 + report_error("Page number must be greater than or equal to 0") + return + end + + offset = page * TRACEPOINTS_PER_PAGE + # Figure out the bbox bbox = params['bbox'] unless bbox and bbox.count(',') == 3 @@ -54,63 +64,241 @@ class ApiController < ApplicationController return end - # get all the nodes - nodes = Node.find(:all, :conditions => ['latitude > ? AND longitude > ? AND latitude < ? AND longitude < ? AND visible = 1', min_lat, min_lon, max_lat, max_lon]) + # get all the points + points = Tracepoint.find_by_area(min_lat, min_lon, max_lat, max_lon, :offset => offset, :limit => TRACEPOINTS_PER_PAGE, :order => "timestamp DESC" ) - node_ids = nodes.collect {|node| node.id } + doc = XML::Document.new + doc.encoding = 'UTF-8' + root = XML::Node.new 'gpx' + root['version'] = '1.0' + root['creator'] = 'OpenStreetMap.org' + root['xmlns'] = "http://www.topografix.com/GPX/1/0/" + + doc.root = root - # (in the future, we may wish to abort here if we found too many nodes) + track = XML::Node.new 'trk' + doc.root << track - # grab the segments - segments = Array.new - if node_ids.length > 0 - node_ids_sql = "(#{node_ids.join(',')})" - # get the referenced segments - segments = Segment.find_by_sql "select * from current_segments where visible = 1 and (node_a in #{node_ids_sql} or node_b in #{node_ids_sql})" + trkseg = XML::Node.new 'trkseg' + track << trkseg + + points.each do |point| + trkseg << point.to_xml_node() + end + + #exit when we have too many requests + if @@count > MAX_COUNT + render :text => doc.to_s, :content_type => "text/xml" + @@count = COUNT + exit! + end + + render :text => doc.to_s, :content_type => "text/xml" + + end + + def map + GC.start + @@count+=1 + + # Figure out the bbox + bbox = params['bbox'] + unless bbox and bbox.count(',') == 3 + report_error("The parameter bbox is required, and must be of the form min_lon,min_lat,max_lon,max_lat") + return + end + + bbox = bbox.split(',') + + min_lon = bbox[0].to_f + min_lat = bbox[1].to_f + max_lon = bbox[2].to_f + max_lat = bbox[3].to_f + + # check the bbox is sane + unless min_lon <= max_lon + report_error("The minimum longitude must be less than the maximum longitude, but it wasn't") + return + end + unless min_lat <= max_lat + report_error("The minimum latitude must be less than the maximum latitude, but it wasn't") + return + end + unless min_lon >= -180 && min_lat >= -90 && max_lon <= 180 && max_lat <= 90 + report_error("The latitudes must be between -90 and 90, and longitudes between -180 and 180") + return end - # see if we have any missing nodes - segments_nodes = segments.collect {|segment| segment.node_a } - segments_nodes += segments.collect {|segment| segment.node_b } - segments_nodes.uniq! + # check the bbox isn't too large + requested_area = (max_lat-min_lat)*(max_lon-min_lon) + if requested_area > MAX_REQUEST_AREA + report_error("The maximum bbox size is " + MAX_REQUEST_AREA.to_s + + ", and your request was too large. Either request a smaller area, or use planet.osm") + return + end - missing_nodes = segments_nodes - node_ids + # get all the nodes + nodes = Node.find_by_area(min_lat, min_lon, max_lat, max_lon, :conditions => "visible = 1") - # get missing nodes if there are any - nodes += Node.find(missing_nodes) if missing_nodes.length > 0 + node_ids = nodes.collect {|node| node.id } + + if node_ids.length > 50_000 + report_error("You requested too many nodes (limit is 50,000). Either request a smaller area, or use planet.osm") + return + end + + if node_ids.length == 0 + render :text => "", :content_type => "text/xml" + return + end + + relations = Array.new doc = OSM::API.new.get_xml_doc # get ways # find which ways are needed - segment_ids = segments.collect {|segment| segment.id } ways = Array.new - if segment_ids.length > 0 - way_segments = WaySegment.find_all_by_segment_id(segment_ids) - way_ids = way_segments.collect {|way_segment| way_segment.id } - ways = Way.find(way_ids) # NB: doesn't pick up segments, tags from db until accessed via way.way_segments etc. + if node_ids.length > 0 + way_nodes = WayNode.find_all_by_node_id(node_ids) + way_ids = way_nodes.collect {|way_node| way_node.id } + ways = Way.find(way_ids) + + list_of_way_nodes = ways.collect { |way| + way.way_nodes.collect { |way_node| way_node.node_id } + } + list_of_way_nodes.flatten! + + else + list_of_way_nodes = Array.new end - nodes.each do |node| - doc.root << node.to_xml_node() + # - [0] in case some thing links to node 0 which doesn't exist. Shouldn't actually ever happen but it does. FIXME: file a ticket for this + nodes_to_fetch = (list_of_way_nodes.uniq - node_ids) - [0] + + if nodes_to_fetch.length > 0 + nodes += Node.find(nodes_to_fetch) end - segments.each do |segment| - doc.root << segment.to_xml_node() - end + visible_nodes = {} + user_display_name_cache = {} + nodes.each do |node| + if node.visible? + doc.root << node.to_xml_node(user_display_name_cache) + visible_nodes[node.id] = node + end + end + + way_ids = Array.new ways.each do |way| - doc.root << way.to_xml_node() + if way.visible? + doc.root << way.to_xml_node(visible_nodes, user_display_name_cache) + way_ids << way.id + end end + # collect relationships. currently done in one big block at the end; + # may need to move this upwards if people want automatic completion of + # relationships, i.e. deliver referenced objects like we do with ways... + relations = Array.new + if visible_nodes.length > 0 + relations += Relation.find_by_sql("select e.* from current_relations e,current_relation_members em where " + + "e.visible=1 and " + + "em.id = e.id and em.member_type='node' and em.member_id in (#{visible_nodes.keys.join(',')})") + end + if way_ids.length > 0 + relations += Relation.find_by_sql("select e.* from current_relations e,current_relation_members em where " + + "e.visible=1 and " + + "em.id = e.id and em.member_type='way' and em.member_id in (#{way_ids.join(',')})") + end + # we do not normally return the "other" partners referenced by an relation, + # e.g. if we return a way A that is referenced by relation X, and there's + # another way B also referenced, that is not returned. But we do make + # an exception for cases where an relation references another *relation*; + # in that case we return that as well (but we don't go recursive here) + relation_ids = relations.collect { |relation| relation.id } + if relation_ids.length > 0 + relations += Relation.find_by_sql("select e.* from current_relations e,current_relation_members em where " + + "e.visible=1 and " + + "em.id = e.id and em.member_type='relation' and em.member_id in (#{relation_ids.join(',')})") + end + + # this "uniq" may be slightly inefficient; it may be better to first collect and output + # all node-related relations, then find the *not yet covered* way-related ones etc. + relations.uniq.each do |relation| + doc.root << relation.to_xml_node(user_display_name_cache) + end + + render :text => doc.to_s, :content_type => "text/xml" + #exit when we have too many requests if @@count > MAX_COUNT - render :text => doc.to_s @@count = COUNT - exit + + exit! + end + end + + def changes + zoom = (params[:zoom] || '12').to_i + + if params.include?(:start) and params.include?(:end) + starttime = Time.parse(params[:start]) + endtime = Time.parse(params[:end]) + else + hours = (params[:hours] || '1').to_i.hours + endtime = Time.now + starttime = endtime - hours end - render :text => doc.to_s + if zoom >= 1 and zoom <= 16 and + endtime >= starttime and endtime - starttime <= 24.hours + mask = (1 << zoom) - 1 + + tiles = Node.count(:conditions => ["timestamp BETWEEN ? AND ?", starttime, endtime], + :group => "maptile_for_point(latitude, longitude, #{zoom})") + + doc = OSM::API.new.get_xml_doc + changes = XML::Node.new 'changes' + changes["starttime"] = starttime.xmlschema + changes["endtime"] = endtime.xmlschema + + tiles.each do |tile, count| + x = (tile.to_i >> zoom) & mask + y = tile.to_i & mask + + t = XML::Node.new 'tile' + t["x"] = x.to_s + t["y"] = y.to_s + t["z"] = zoom.to_s + t["changes"] = count.to_s + + changes << t + end + + doc.root << changes + + render :text => doc.to_s, :content_type => "text/xml" + else + render :nothing => true, :status => :bad_request + end + end + + def capabilities + doc = OSM::API.new.get_xml_doc + + api = XML::Node.new 'api' + version = XML::Node.new 'version' + version['minimum'] = '0.5'; + version['maximum'] = '0.5'; + api << version + area = XML::Node.new 'area' + area['maximum'] = MAX_REQUEST_AREA.to_s; + api << area + + doc.root << api + render :text => doc.to_s, :content_type => "text/xml" end end