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[rails.git] / app / controllers / api / changesets_controller.rb

diff --git a/app/controllers/api/changesets_controller.rb b/app/controllers/api/changesets_controller.rb
index 853ee389f087a24a2ef8fdde3ddd1c38662344c9..c9c806de6ecc4a7e19d2d345180c87ea3d643493 100644 (file)
--- a/app/controllers/api/changesets_controller.rb
+++ b/app/controllers/api/changesets_controller.rb
@@ -1,31 +1,43 @@
 # The ChangesetController is the RESTful interface to Changeset objects
 
 module Api
 # The ChangesetController is the RESTful interface to Changeset objects
 
 module Api

-  class ChangesetsController < ApplicationController
-    layout "site"
+  class ChangesetsController < ApiController

     require "xml/libxml"
 
     require "xml/libxml"
 

-    skip_before_action :verify_authenticity_token
+    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]
     before_action :authorize, :only => [:create, :update, :upload, :close, :subscribe, :unsubscribe]

-    before_action :api_deny_access_handler, :only => [:create, :update, :upload, :close, :subscribe, :unsubscribe, :expand_bbox]

 
     authorize_resource
 
     before_action :require_public_data, :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(:only => [:index, :feed]) { |c| c.check_database_readable(true) }
+    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
 
     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
 
     # 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
 
       # Assume that Changeset.from_xml has thrown an exception if there is an error parsing the xml
       cs.user = current_user


@@ -37,15 +49,6 @@ module Api
       render :plain => cs.id.to_s
     end
 
       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])
-
-      render :xml => changeset.to_xml(params[:include_discussion].presence).to_s
-    end
-

     ##
     # marks a changeset as closed. this may be called multiple times
     # on the same changeset, so is idempotent.
     ##
     # marks a changeset as closed. this may be called multiple times
     # on the same changeset, so is idempotent.


@@ -64,49 +67,6 @@ module Api
       head :ok
     end
 
       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!
-      render :xml => cs.to_xml.to_s
-    end
-

     ##
     # Upload a diff in a single transaction.
     #
     ##
     # Upload a diff in a single transaction.
     #


@@ -132,6 +92,10 @@ module Api
       diff_reader = DiffReader.new(request.raw_post, changeset)
       Changeset.transaction do
         result = diff_reader.commit
       diff_reader = DiffReader.new(request.raw_post, changeset)
       Changeset.transaction do
         result = diff_reader.commit

+        # the number of changes in this changeset has already been
+        # updated and is visible in this transaction so we don't need
+        # to allow for any more when checking the limit
+        check_rate_limit(0)

         render :xml => result.to_s
       end
     end
         render :xml => result.to_s
       end
     end


@@ -169,40 +133,36 @@ module Api
         end
       end
 
         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.
       # 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|
       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
 
       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
     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"]
 
       # find any bounding box
       bbox = BoundingBox.from_bbox_params(params) if params["bbox"]
 


@@ -212,25 +172,29 @@ module Api
       changesets = conditions_bbox(changesets, bbox)
       changesets = conditions_user(changesets, params["user"], params["display_name"])
       changesets = conditions_time(changesets, params["time"])
       changesets = conditions_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"])
 
       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

 
 

-      # preload users, tags and comments
-      changesets = changesets.preload(:user, :changeset_tags, :comments)
+      # limit the result
+      changesets = changesets.limit(result_limit)

 
 

-      # create the results document
-      results = OSM::API.new.get_xml_doc
+      # preload users, tags and comments, and render result
+      @changesets = changesets.preload(:user, :changeset_tags, :comments)
+      render "changesets"

 
 

-      # add all matching changesets to the XML results document
-      changesets.order("created_at DESC").limit(100).each do |cs|
-        results.root << cs.to_xml_node
+      respond_to do |format|
+        format.xml
+        format.json

       end
       end

-
-      render :xml => results.to_s

     end
 
     ##
     end
 
     ##


@@ -245,12 +209,17 @@ module Api
       # request *must* be a PUT.
       assert_method :put
 
       # request *must* be a PUT.
       assert_method :put
 

-      changeset = Changeset.find(params[:id])
+      @changeset = Changeset.find(params[:id])

       new_changeset = Changeset.from_xml(request.raw_post)
 
       new_changeset = Changeset.from_xml(request.raw_post)
 

-      check_changeset_consistency(changeset, current_user)
-      changeset.update_from(new_changeset, current_user)
-      render :xml => changeset.to_xml.to_s
+      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
 
     ##
     end
 
     ##


@@ -270,7 +239,13 @@ module Api
       changeset.subscribers << current_user
 
       # Return a copy of the updated changeset
       changeset.subscribers << current_user
 
       # Return a copy of the updated changeset

-      render :xml => changeset.to_xml.to_s
+      @changeset = changeset
+      render "changeset"
+
+      respond_to do |format|
+        format.xml
+        format.json
+      end

     end
 
     ##
     end
 
     ##


@@ -290,7 +265,13 @@ module Api
       changeset.subscribers.delete(current_user)
 
       # Return a copy of the updated changeset
       changeset.subscribers.delete(current_user)
 
       # Return a copy of the updated changeset

-      render :xml => changeset.to_xml.to_s
+      @changeset = changeset
+      render "changeset"
+
+      respond_to do |format|
+        format.xml
+        format.json
+      end

     end
 
     private
     end
 
     private


@@ -302,7 +283,6 @@ module Api
     ##
     # if a bounding box was specified do some sanity checks.
     # restrict changesets to those enclosed by a bounding box
     ##
     # if a bounding box was specified do some sanity checks.
     # restrict changesets to those enclosed by a bounding box

-    # we need to return both the changesets and the bounding box

     def conditions_bbox(changesets, bbox)
       if bbox
         bbox.check_boundaries
     def conditions_bbox(changesets, bbox)
       if bbox
         bbox.check_boundaries


@@ -330,7 +310,7 @@ module Api
               # user input checking, we don't have any UIDs < 1
               raise OSM::APIBadUserInput, "invalid user ID" if user.to_i < 1
 
               # user input checking, we don't have any UIDs < 1
               raise OSM::APIBadUserInput, "invalid user ID" if user.to_i < 1
 

-              u = User.find(user.to_i)
+              u = User.find_by(:id => user.to_i)

             else
               u = User.find_by(:display_name => name)
             end
             else
               u = User.find_by(:display_name => name)
             end


@@ -348,12 +328,12 @@ module Api
           raise OSM::APINotFoundError if current_user.nil? || current_user != u
         end
 
           raise OSM::APINotFoundError if current_user.nil? || current_user != u
         end
 

-        changesets.where(:user_id => u.id)
+        changesets.where(:user => u)

       end
     end
 
     ##
       end
     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
     def conditions_time(changesets, time)
       if time.nil?
         changesets


@@ -362,21 +342,46 @@ module Api
         # low, second is high - same as with bounding boxes.
 
         # check that we actually have 2 elements in the array
         # 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
 
         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 >= ? 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.
       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
+
+    ##
+    # 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
 
     ##
     end
 
     ##


@@ -389,7 +394,7 @@ module Api
         changesets
       else
         changesets.where("closed_at >= ? and num_changes <= ?",
         changesets
       else
         changesets.where("closed_at >= ? and num_changes <= ?",

-                         Time.now.getutc, Changeset::MAX_ELEMENTS)
+                         Time.now.utc, Changeset::MAX_ELEMENTS)

       end
     end
 
       end
     end
 


@@ -401,7 +406,7 @@ module Api
         changesets
       else
         changesets.where("closed_at < ? or num_changes > ?",
         changesets
       else
         changesets.where("closed_at < ? or num_changes > ?",

-                         Time.now.getutc, Changeset::MAX_ELEMENTS)
+                         Time.now.utc, Changeset::MAX_ELEMENTS)

       end
     end
 
       end
     end
 


@@ -418,5 +423,19 @@ module Api
         changesets.where(:id => ids)
       end
     end
         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
   end
 end