X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/8c326a6c1fcea02c2937579524c30b5c77c4d8eb..5016defff0e6c5220c4b58ffabcf7113473b5e5f:/app/controllers/api/changesets_controller.rb

diff --git a/app/controllers/api/changesets_controller.rb b/app/controllers/api/changesets_controller.rb
index a5a37b485..84f1ccdb5 100644
--- a/app/controllers/api/changesets_controller.rb
+++ b/app/controllers/api/changesets_controller.rb
@@ -4,24 +4,40 @@ module Api
   class ChangesetsController < ApiController
     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
@@ -33,15 +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.
@@ -122,40 +129,36 @@ 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
 
     ##
     # query changesets by bounding box, time, user or open/closed status.
     def query
+      raise OSM::APIBadUserInput, "cannot use order=oldest with time" if params[:time] && params[:order] == "oldest"
+
       # find any bounding box
       bbox = BoundingBox.from_bbox_params(params) if params["bbox"]
 
@@ -165,16 +168,29 @@ module Api
       changesets = conditions_bbox(changesets, bbox)
       changesets = conditions_user(changesets, params["user"], params["display_name"])
       changesets = conditions_time(changesets, params["time"])
+      changesets = conditions_from_to(changesets, params["from"], params["to"])
       changesets = conditions_open(changesets, params["open"])
       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(:created_at => :asc)
+                   else
+                     changesets.order(:created_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
 
     ##
@@ -195,6 +211,11 @@ 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
 
     ##
@@ -216,6 +237,11 @@ module Api
       # Return a copy of the updated changeset
       @changeset = changeset
       render "changeset"
+
+      respond_to do |format|
+        format.xml
+        format.json
+      end
     end
 
     ##
@@ -237,6 +263,11 @@ module Api
       # Return a copy of the updated changeset
       @changeset = changeset
       render "changeset"
+
+      respond_to do |format|
+        format.xml
+        format.json
+      end
     end
 
     private
@@ -299,7 +330,7 @@ module Api
     end
 
     ##
-    # restrict changes to those closed during a particular time period
+    # restrict changesets to those during a particular time period
     def conditions_time(changesets, time)
       if time.nil?
         changesets
@@ -308,23 +339,48 @@ 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 => e
-      raise OSM::APIBadUserInput, e.message.to_s
-    rescue RuntimeError => e
+    rescue ArgumentError, RuntimeError => e
       raise OSM::APIBadUserInput, e.message.to_s
     end
 
+    ##
+    # restrict changesets to those opened during a particular time period
+    # works similar to from..to of notes controller, including the requirement of 'from' when specifying 'to'
+    def conditions_from_to(changesets, from, to)
+      if from
+        begin
+          from = Time.parse(from).utc
+        rescue ArgumentError
+          raise OSM::APIBadUserInput, "Date #{from} is in a wrong format"
+        end
+
+        begin
+          to = if to
+                 Time.parse(to).utc
+               else
+                 Time.now.utc
+               end
+        rescue ArgumentError
+          raise OSM::APIBadUserInput, "Date #{to} is in a wrong format"
+        end
+
+        changesets.where(:created_at => from..to)
+      else
+        changesets
+      end
+    end
+
     ##
     # return changesets which are open (haven't been closed yet)
     # we do this by seeing if the 'closed at' time is in the future. Also if we've
@@ -335,7 +391,7 @@ 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
 
@@ -347,7 +403,7 @@ 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
 
@@ -364,5 +420,19 @@ 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