X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/dad36f2fca68142c53875cdacc55192d1561effd..28b00b85da663c161803897f6a54550597ed82c1:/app/controllers/api/changesets_controller.rb

diff --git a/app/controllers/api/changesets_controller.rb b/app/controllers/api/changesets_controller.rb
index fb6523f4e..0a49a95f4 100644
--- a/app/controllers/api/changesets_controller.rb
+++ b/app/controllers/api/changesets_controller.rb
@@ -2,27 +2,42 @@
 
 module Api
   class ChangesetsController < ApiController
-    layout "site"
     require "xml/libxml"
 
+    before_action :check_api_writable, :only => [:create, :update, :upload, :subscribe, :unsubscribe]
+    before_action :check_api_readable, :except => [:create, :update, :upload, :download, :query, :subscribe, :unsubscribe]
     before_action :authorize, :only => [:create, :update, :upload, :close, :subscribe, :unsubscribe]
 
     authorize_resource
 
     before_action :require_public_data, :only => [:create, :update, :upload, :close, :subscribe, :unsubscribe]
-    before_action :check_api_writable, :only => [:create, :update, :upload, :subscribe, :unsubscribe]
-    before_action :check_api_readable, :except => [:create, :update, :upload, :download, :query, :subscribe, :unsubscribe]
+    before_action :set_request_formats, :except => [:create, :close, :upload]
+
     around_action :api_call_handle_error
     around_action :api_call_timeout, :except => [:upload]
 
     # Helper methods for checking consistency
     include ConsistencyValidations
 
+    ##
+    # Return XML giving the basic info about the changeset. Does not
+    # return anything about the nodes, ways and relations in the changeset.
+    def show
+      @changeset = Changeset.find(params[:id])
+      @include_discussion = params[:include_discussion].presence
+      render "changeset"
+
+      respond_to do |format|
+        format.xml
+        format.json
+      end
+    end
+
     # Create a changeset from XML.
     def create
       assert_method :put
 
-      cs = Changeset.from_xml(request.raw_post, true)
+      cs = Changeset.from_xml(request.raw_post, :create => true)
 
       # Assume that Changeset.from_xml has thrown an exception if there is an error parsing the xml
       cs.user = current_user
@@ -34,15 +49,6 @@ module Api
       render :plain => cs.id.to_s
     end
 
-    ##
-    # Return XML giving the basic info about the changeset. Does not
-    # return anything about the nodes, ways and relations in the changeset.
-    def show
-      @changeset = Changeset.find(params[:id])
-      @include_discussion = params[:include_discussion].presence
-      render "changeset"
-    end
-
     ##
     # marks a changeset as closed. this may be called multiple times
     # on the same changeset, so is idempotent.
@@ -61,50 +67,6 @@ module Api
       head :ok
     end
 
-    ##
-    # insert a (set of) points into a changeset bounding box. this can only
-    # increase the size of the bounding box. this is a hint that clients can
-    # set either before uploading a large number of changes, or changes that
-    # the client (but not the server) knows will affect areas further away.
-    def expand_bbox
-      # only allow POST requests, because although this method is
-      # idempotent, there is no "document" to PUT really...
-      assert_method :post
-
-      cs = Changeset.find(params[:id])
-      check_changeset_consistency(cs, current_user)
-
-      # keep an array of lons and lats
-      lon = []
-      lat = []
-
-      # the request is in pseudo-osm format... this is kind-of an
-      # abuse, maybe should change to some other format?
-      doc = XML::Parser.string(request.raw_post, :options => XML::Parser::Options::NOERROR).parse
-      doc.find("//osm/node").each do |n|
-        lon << n["lon"].to_f * GeoRecord::SCALE
-        lat << n["lat"].to_f * GeoRecord::SCALE
-      end
-
-      # add the existing bounding box to the lon-lat array
-      lon << cs.min_lon unless cs.min_lon.nil?
-      lat << cs.min_lat unless cs.min_lat.nil?
-      lon << cs.max_lon unless cs.max_lon.nil?
-      lat << cs.max_lat unless cs.max_lat.nil?
-
-      # collapse the arrays to minimum and maximum
-      cs.min_lon = lon.min
-      cs.min_lat = lat.min
-      cs.max_lon = lon.max
-      cs.max_lat = lat.max
-
-      # save the larger bounding box and return the changeset, which
-      # will include the bigger bounding box.
-      cs.save!
-      @changeset = cs
-      render "changeset"
-    end
-
     ##
     # Upload a diff in a single transaction.
     #
@@ -167,35 +129,29 @@ module Api
         end
       end
 
-      # create changeset and user caches
-      changeset_cache = {}
-      user_display_name_cache = {}
-
-      # create an osmChange document for the output
-      result = OSM::API.new.get_xml_doc
-      result.root.name = "osmChange"
-
       # generate an output element for each operation. note: we avoid looking
       # at the history because it is simpler - but it would be more correct to
       # check these assertions.
+      @created = []
+      @modified = []
+      @deleted = []
+
       elements.each do |elt|
-        result.root <<
-          if elt.version == 1
-            # first version, so it must be newly-created.
-            created = XML::Node.new "create"
-            created << elt.to_xml_node(changeset_cache, user_display_name_cache)
-          elsif elt.visible
-            # must be a modify
-            modified = XML::Node.new "modify"
-            modified << elt.to_xml_node(changeset_cache, user_display_name_cache)
-          else
-            # if the element isn't visible then it must have been deleted
-            deleted = XML::Node.new "delete"
-            deleted << elt.to_xml_node(changeset_cache, user_display_name_cache)
-          end
+        if elt.version == 1
+          # first version, so it must be newly-created.
+          @created << elt
+        elsif elt.visible
+          # must be a modify
+          @modified << elt
+        else
+          # if the element isn't visible then it must have been deleted
+          @deleted << elt
+        end
       end
 
-      render :xml => result.to_s
+      respond_to do |format|
+        format.xml
+      end
     end
 
     ##
@@ -214,12 +170,24 @@ module Api
       changesets = conditions_closed(changesets, params["closed"])
       changesets = conditions_ids(changesets, params["changesets"])
 
-      # sort and limit the changesets
-      changesets = changesets.order("created_at DESC").limit(100)
+      # sort the changesets
+      changesets = if params[:order] == "oldest"
+                     changesets.order(:closed_at => :asc)
+                   else
+                     changesets.order(:closed_at => :desc)
+                   end
+
+      # limit the result
+      changesets = changesets.limit(result_limit)
 
       # preload users, tags and comments, and render result
       @changesets = changesets.preload(:user, :changeset_tags, :comments)
       render "changesets"
+
+      respond_to do |format|
+        format.xml
+        format.json
+      end
     end
 
     ##
@@ -240,6 +208,11 @@ module Api
       check_changeset_consistency(@changeset, current_user)
       @changeset.update_from(new_changeset, current_user)
       render "changeset"
+
+      respond_to do |format|
+        format.xml
+        format.json
+      end
     end
 
     ##
@@ -261,6 +234,11 @@ module Api
       # Return a copy of the updated changeset
       @changeset = changeset
       render "changeset"
+
+      respond_to do |format|
+        format.xml
+        format.json
+      end
     end
 
     ##
@@ -282,6 +260,11 @@ module Api
       # Return a copy of the updated changeset
       @changeset = changeset
       render "changeset"
+
+      respond_to do |format|
+        format.xml
+        format.json
+      end
     end
 
     private
@@ -353,21 +336,19 @@ module Api
         # low, second is high - same as with bounding boxes.
 
         # check that we actually have 2 elements in the array
-        times = time.split(/,/)
+        times = time.split(",")
         raise OSM::APIBadUserInput, "bad time range" if times.size != 2
 
-        from, to = times.collect { |t| Time.parse(t) }
+        from, to = times.collect { |t| Time.parse(t).utc }
         changesets.where("closed_at >= ? and created_at <= ?", from, to)
       else
         # if there is no comma, assume its a lower limit on time
-        changesets.where("closed_at >= ?", Time.parse(time))
+        changesets.where("closed_at >= ?", Time.parse(time).utc)
       end
       # stupid Time seems to throw both of these for bad parsing, so
       # we have to catch both and ensure the correct code path is taken.
-    rescue ArgumentError => ex
-      raise OSM::APIBadUserInput, ex.message.to_s
-    rescue RuntimeError => ex
-      raise OSM::APIBadUserInput, ex.message.to_s
+    rescue ArgumentError, RuntimeError => e
+      raise OSM::APIBadUserInput, e.message.to_s
     end
 
     ##
@@ -380,7 +361,7 @@ module Api
         changesets
       else
         changesets.where("closed_at >= ? and num_changes <= ?",
-                         Time.now.getutc, Changeset::MAX_ELEMENTS)
+                         Time.now.utc, Changeset::MAX_ELEMENTS)
       end
     end
 
@@ -392,7 +373,7 @@ module Api
         changesets
       else
         changesets.where("closed_at < ? or num_changes > ?",
-                         Time.now.getutc, Changeset::MAX_ELEMENTS)
+                         Time.now.utc, Changeset::MAX_ELEMENTS)
       end
     end
 
@@ -409,5 +390,19 @@ module Api
         changesets.where(:id => ids)
       end
     end
+
+    ##
+    # Get the maximum number of results to return
+    def result_limit
+      if params[:limit]
+        if params[:limit].to_i.positive? && params[:limit].to_i <= Settings.max_changeset_query_limit
+          params[:limit].to_i
+        else
+          raise OSM::APIBadUserInput, "Changeset limit must be between 1 and #{Settings.max_changeset_query_limit}"
+        end
+      else
+        Settings.default_changeset_query_limit
+      end
+    end
   end
 end