class ApiController < ApplicationController
-
- session :off
- before_filter :check_read_availability, :except => [:capabilities]
- after_filter :compress_output
-
- #COUNT is the number of map requests to allow before exiting and starting a new process
- @@count = COUNT
-
- # The maximum area you're allowed to request, in square degrees
- MAX_REQUEST_AREA = 0.25
-
-
- # Number of GPS trace/trackpoints returned per-page
- TRACEPOINTS_PER_PAGE = 5000
-
- def trackpoints
- @@count+=1
- #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
- 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
-
- # 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
-
- # 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" )
-
- 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
-
- track = XML::Node.new 'trk'
- doc.root << track
-
- 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
-
+ skip_before_action :verify_authenticity_token
+ before_action :api_deny_access_handler
+
+ authorize_resource :class => false
+
+ before_action :check_api_readable
+ around_action :api_call_handle_error, :api_call_timeout
+
+ # This is probably the most common call of all. It is used for getting the
+ # OSM data for a specified bounding box, usually for editing. First the
+ # bounding box (bbox) is checked to make sure that it is sane. All nodes
+ # are searched, then all the ways that reference those nodes are found.
+ # All Nodes that are referenced by those ways are fetched and added to the list
+ # of nodes.
+ # Then all the relations that reference the already found nodes and ways are
+ # fetched. All the nodes and ways that are referenced by those ways are then
+ # fetched. Finally all the xml is returned.
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")
+ # check boundary is sane and area within defined
+ # see /config/application.yml
+ begin
+ bbox = BoundingBox.from_bbox_params(params)
+ bbox.check_boundaries
+ bbox.check_size
+ rescue StandardError => err
+ report_error(err.message)
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
+ nodes = Node.bbox(bbox).where(:visible => true).includes(:node_tags).limit(MAX_NUMBER_OF_NODES + 1)
- # 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")
+ node_ids = nodes.collect(&:id)
+ if node_ids.length > MAX_NUMBER_OF_NODES
+ report_error("You requested too many nodes (limit is #{MAX_NUMBER_OF_NODES}). Either request a smaller area, or use planet.osm")
return
end
- # 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
-
- # get all the nodes
- nodes = Node.find_by_area(min_lat, min_lon, max_lat, max_lon, :conditions => "visible = 1")
-
- 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 => "<osm version='0.5'></osm>", :content_type => "text/xml"
- return
- end
-
- relations = Array.new
-
doc = OSM::API.new.get_xml_doc
+ # add bounds
+ doc.root << bbox.add_bounds_to(XML::Node.new("bounds"))
+
# get ways
# find which ways are needed
- ways = Array.new
- 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[0] }
- ways = Way.find(way_ids)
+ ways = []
+ if node_ids.empty?
+ list_of_way_nodes = []
+ else
+ way_nodes = WayNode.where(:node_id => node_ids)
+ way_ids = way_nodes.collect { |way_node| way_node.id[0] }
+ ways = Way.preload(:way_nodes, :way_tags).find(way_ids)
- list_of_way_nodes = ways.collect { |way|
- way.way_nodes.collect { |way_node| way_node.node_id }
- }
+ list_of_way_nodes = ways.collect do |way|
+ way.way_nodes.collect(&:node_id)
+ end
list_of_way_nodes.flatten!
-
- else
- list_of_way_nodes = Array.new
end
# - [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
+ nodes += Node.includes(:node_tags).find(nodes_to_fetch) unless nodes_to_fetch.empty?
visible_nodes = {}
+ changeset_cache = {}
user_display_name_cache = {}
nodes.each do |node|
if node.visible?
- doc.root << node.to_xml_node(user_display_name_cache)
+ doc.root << node.to_xml_node(changeset_cache, user_display_name_cache)
visible_nodes[node.id] = node
end
end
- way_ids = Array.new
+ way_ids = []
ways.each do |way|
if way.visible?
- doc.root << way.to_xml_node(visible_nodes, user_display_name_cache)
+ doc.root << way.to_xml_node(visible_nodes, changeset_cache, 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*;
+
+ relations = Relation.nodes(visible_nodes.keys).visible +
+ Relation.ways(way_ids).visible
+
+ # 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
+ relations += Relation.relations(relations.collect(&:id)).visible
# 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)
+ doc.root << relation.to_xml_node(changeset_cache, 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
- @@count = COUNT
-
- 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
-
- 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
+ response.headers["Content-Disposition"] = "attachment; filename=\"map.osm\""
- render :text => doc.to_s, :content_type => "text/xml"
+ render :xml => doc.to_s
end
end
projects / rails.git / blobdiff