module Api
class ChangesetsController < ApiController
- layout "site"
- require "xml/libxml"
-
+ before_action :check_api_writable, :only => [:create, :update, :upload, :subscribe, :unsubscribe]
+ before_action :setup_user_auth, :only => [:show]
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]
- 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) }
- around_action :api_call_handle_error
- around_action :api_call_timeout, :except => [:upload]
+ before_action :set_request_formats, :except => [:create, :close, :upload]
+
+ skip_around_action :api_call_timeout, :only => [:upload]
# Helper methods for checking consistency
include ConsistencyValidations
- # Create a changeset from XML.
- def create
- assert_method :put
+ ##
+ # query changesets by bounding box, time, user or open/closed status.
+ def index
+ raise OSM::APIBadUserInput, "cannot use order=oldest with time" if params[:time] && params[:order] == "oldest"
- cs = Changeset.from_xml(request.raw_post, true)
+ # find any bounding box
+ bbox = BoundingBox.from_bbox_params(params) if params["bbox"]
- # Assume that Changeset.from_xml has thrown an exception if there is an error parsing the xml
- cs.user = current_user
- cs.save_with_tags!
+ # create the conditions that the user asked for. some or all of
+ # these may be nil.
+ changesets = Changeset.all
+ 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"])
- # Subscribe user to changeset comments
- cs.subscribers << current_user
+ # sort the changesets
+ changesets = if params[:order] == "oldest"
+ changesets.order(:created_at => :asc)
+ else
+ changesets.order(:created_at => :desc)
+ end
- render :plain => cs.id.to_s
+ # limit the result
+ changesets = changesets.limit(result_limit)
+
+ # preload users, tags and comments, and render result
+ @changesets = changesets.preload(:user, :changeset_tags, :comments)
+
+ respond_to do |format|
+ format.xml
+ format.json
+ end
end
##
# 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"
+ if params[:include_discussion].presence
+ @comments = @changeset.comments
+ @comments = @comments.unscope(:where => :visible) if params[:show_hidden_comments].presence && can?(:restore, ChangesetComment)
+ @comments = @comments.includes(:author)
+ end
+
+ respond_to do |format|
+ format.xml
+ format.json
+ end
+ end
+
+ # Create a changeset from XML.
+ def create
+ 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
+ cs.save_with_tags!
+
+ # Subscribe user to changeset comments
+ cs.subscribe(current_user)
+
+ render :plain => cs.id.to_s
end
##
# marks a changeset as closed. this may be called multiple times
# on the same changeset, so is idempotent.
def close
- assert_method :put
-
changeset = Changeset.find(params[:id])
check_changeset_consistency(changeset, current_user)
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.
#
# Returns: a diffResult document, as described in
# http://wiki.openstreetmap.org/wiki/OSM_Protocol_Version_0.6
def upload
- # only allow POST requests, as the upload method is most definitely
- # not idempotent, as several uploads with placeholder IDs will have
- # different side-effects.
- # see http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9.1.2
- assert_method :post
-
changeset = Changeset.find(params[:id])
check_changeset_consistency(changeset, current_user)
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
# almost sensible ordering available. this would be much nicer if
# global (SVN-style) versioning were used - then that would be
# unambiguous.
- elements.sort! do |a, b|
- if a.timestamp == b.timestamp
- a.version <=> b.version
- else
- a.timestamp <=> b.timestamp
- 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"
+ elements.sort_by! { |e| [e.timestamp, e.version] }
# 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
- end
-
- ##
- # query changesets by bounding box, time, user or open/closed status.
- def query
- # find any bounding box
- bbox = BoundingBox.from_bbox_params(params) if params["bbox"]
-
- # create the conditions that the user asked for. some or all of
- # these may be nil.
- changesets = Changeset.all
- changesets = conditions_bbox(changesets, bbox)
- changesets = conditions_user(changesets, params["user"], params["display_name"])
- changesets = conditions_time(changesets, params["time"])
- 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)
-
- # preload users, tags and comments, and render result
- @changesets = changesets.preload(:user, :changeset_tags, :comments)
- render "changesets"
+ respond_to do |format|
+ format.xml
+ end
end
##
#
# after succesful update, returns the XML of the changeset.
def update
- # request *must* be a PUT.
- assert_method :put
-
@changeset = Changeset.find(params[:id])
new_changeset = Changeset.from_xml(request.raw_post)
check_changeset_consistency(@changeset, current_user)
@changeset.update_from(new_changeset, current_user)
- render "changeset"
+ render "show"
+
+ respond_to do |format|
+ format.xml
+ format.json
+ end
end
##
# Find the changeset and check it is valid
changeset = Changeset.find(id)
- raise OSM::APIChangesetAlreadySubscribedError, changeset if changeset.subscribers.exists?(current_user.id)
+ raise OSM::APIChangesetAlreadySubscribedError, changeset if changeset.subscribed?(current_user)
# Add the subscriber
- changeset.subscribers << current_user
+ changeset.subscribe(current_user)
# Return a copy of the updated changeset
@changeset = changeset
- render "changeset"
+ render "show"
+
+ respond_to do |format|
+ format.xml
+ format.json
+ end
end
##
# Find the changeset and check it is valid
changeset = Changeset.find(id)
- raise OSM::APIChangesetNotSubscribedError, changeset unless changeset.subscribers.exists?(current_user.id)
+ raise OSM::APIChangesetNotSubscribedError, changeset unless changeset.subscribed?(current_user)
# Remove the subscriber
- changeset.subscribers.delete(current_user)
+ changeset.unsubscribe(current_user)
# Return a copy of the updated changeset
@changeset = changeset
- render "changeset"
+ render "show"
+
+ respond_to do |format|
+ format.xml
+ format.json
+ end
end
private
##
# 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
# 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
raise OSM::APINotFoundError if current_user.nil? || current_user != u
end
- changesets.where(:user_id => u.id)
+ changesets.where(:user => u)
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
# 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
+
+ ##
+ # 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
##
changesets
else
changesets.where("closed_at >= ? and num_changes <= ?",
- Time.now.getutc, Changeset::MAX_ELEMENTS)
+ Time.now.utc, Changeset::MAX_ELEMENTS)
end
end
changesets
else
changesets.where("closed_at < ? or num_changes > ?",
- Time.now.getutc, Changeset::MAX_ELEMENTS)
+ Time.now.utc, Changeset::MAX_ELEMENTS)
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
projects / rails.git / blobdiff