114 lines
3.4 KiB
Ruby
114 lines
3.4 KiB
Ruby
# The ChangesetController is the RESTful interface to Changeset objects
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class ChangesetController < ApplicationController
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require 'xml/libxml'
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before_filter :authorize, :only => [:create, :update, :delete, :upload]
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before_filter :check_write_availability, :only => [:create, :update, :delete, :upload]
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before_filter :check_read_availability, :except => [:create, :update, :delete, :upload]
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after_filter :compress_output
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# Create a changeset from XML.
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def create
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if request.put?
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cs = Changeset.from_xml(request.raw_post, true)
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if cs
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cs.user_id = @user.id
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cs.save_with_tags!
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render :text => cs.id.to_s, :content_type => "text/plain"
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else
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render :nothing => true, :status => :bad_request
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end
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else
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render :nothing => true, :status => :method_not_allowed
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end
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end
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def create_prim(ids, prim, nd)
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prim.version = 0
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prim.user_id = @user.id
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prim.visible = true
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prim.save_with_history!
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ids[nd['id'].to_i] = prim.id
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end
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def fix_way(w, node_ids)
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w.nds = w.instance_eval { @nds }.
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map { |nd| node_ids[nd] || nd }
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return w
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end
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def fix_rel(r, ids)
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r.members = r.instance_eval { @members }.
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map { |memb| [memb[0], ids[memb[0]][memb[1].to_i] || memb[1], memb[2]] }
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return r
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end
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def upload
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if not request.put?
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render :nothing => true, :status => :method_not_allowed
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return
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end
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# FIXME: this should really be done without loading the whole XML file
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# into memory.
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p = XML::Parser.new
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p.string = request.raw_post
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doc = p.parse
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node_ids, way_ids, rel_ids = {}, {}, {}
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ids = {"node"=>node_ids, "way"=>way_ids, "relation"=>rel_ids}
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Changeset.transaction do
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doc.find('//osm/create/node').each do |nd|
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create_prim node_ids, Node.from_xml_node(nd, true), nd
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end
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doc.find('//osm/create/way').each do |nd|
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way = Way.from_xml_node(nd, true)
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fix_way(way, node_ids)
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raise OSM::APIPreconditionFailedError.new if !way.preconditions_ok?
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create_prim way_ids, way, nd
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end
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doc.find('//osm/create/relation').each do |nd|
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relation = Relation.from_xml_node(nd, true)
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fix_rel(relation, ids)
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raise OSM::APIPreconditionFailedError.new if !relation.preconditions_ok?
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create_prim rel_ids, relation, nd
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end
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doc.find('//osm/modify/node').each do |nd|
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unless NodeController.new.update_internal nil, Node.from_xml_node(nd)
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raise OSM::APIPreconditionFailedError.new
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end
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end
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doc.find('//osm/modify/way').each do |nd|
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unless WayController.update_internal nil, fix_way(Way.from_xml_node(nd), node_ids)
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raise OSM::APIPreconditionFailedError.new
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end
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end
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doc.find('//osm/modify/relation').each do |nd|
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unless RelationController.update_internal nil, fix_rel(Relation.from_xml_node(nd), ids)
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raise OSM::APIPreconditionFailedError.new
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end
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end
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doc.find('//osm/delete/node').each do |nd|
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unless NodeController.delete_internal nil, Node.from_xml_node(n)
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raise OSM::APIPreconditionFailedError.new
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end
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end
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doc.find('//osm/delete/way').each do |nd|
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Way.from_xml_node(nd).delete_with_relations_and_history(@user)
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end
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doc.find('//osm/delete/relation').each do |nd|
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unless RelationController.delete_internal nil, fix_rel(Relation.from_xml_node(nd), ids)
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raise OSM::APIPreconditionFailedError.new
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end
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end
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end
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render :text => "Ok, Fine. Upload worked without errors.\n", :status => 200
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end
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end
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