X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/bbbf2569865bad3198c05587083e670bdba8b592..ebbead9701d91ba5499b816aab2614bdf53fa8e3:/app/models/changeset.rb diff --git a/app/models/changeset.rb b/app/models/changeset.rb index 9dc60de48..4efd4f9e7 100644 --- a/app/models/changeset.rb +++ b/app/models/changeset.rb @@ -17,7 +17,7 @@ class Changeset < ActiveRecord::Base validates_uniqueness_of :id validates_numericality_of :id, :on => :update, :integer_only => true validates_numericality_of :min_lat, :max_lat, :min_lon, :max_lat, :allow_nil => true, :integer_only => true - validates_numericality_of :user_id, :integer_only => true, :greater_than_or_equal_to => 1 + validates_numericality_of :user_id, :integer_only => true validates_numericality_of :num_changes, :integer_only => true, :greater_than_or_equal_to => 0 validates_associated :user @@ -27,15 +27,11 @@ class Changeset < ActiveRecord::Base # maximum number of elements allowed in a changeset MAX_ELEMENTS = 50000 - # maximum time a changeset is allowed to be open for (note that this - # is in days - so one hour is Rational(1,24)). - MAX_TIME_OPEN = 1 + # maximum time a changeset is allowed to be open for. + MAX_TIME_OPEN = 1.day - # idle timeout increment, one hour as a rational number of days. - # NOTE: DO NOT CHANGE THIS TO 1.hour! when this was done the idle - # timeout changed to 1 second, which meant all changesets closed - # almost immediately. - IDLE_TIMEOUT = Rational(1,24) + # idle timeout increment, one hour seems reasonable. + IDLE_TIMEOUT = 1.hour # Use a method like this, so that we can easily change how we # determine whether a changeset is open, without breaking code in at @@ -46,27 +42,28 @@ class Changeset < ActiveRecord::Base # note that this may not be a hard limit - due to timing changes and # concurrency it is possible that some changesets may be slightly # longer than strictly allowed or have slightly more changes in them. - return ((closed_at > DateTime.now) and (num_changes <= MAX_ELEMENTS)) + return ((closed_at > Time.now.getutc) and (num_changes <= MAX_ELEMENTS)) end def set_closed_time_now - self.closed_at = DateTime.now + if is_open? + self.closed_at = Time.now.getutc + end end def self.from_xml(xml, create=false) begin - p = XML::Parser.new - p.string = xml + p = XML::Parser.string(xml) doc = p.parse cs = Changeset.new doc.find('//osm/changeset').each do |pt| if create - cs.created_at = Time.now + cs.created_at = Time.now.getutc # initial close time is 1h ahead, but will be increased on each # modification. - cs.closed_at = Time.now + IDLE_TIMEOUT + cs.closed_at = cs.created_at + IDLE_TIMEOUT # initially we have no changes in a changeset cs.num_changes = 0 end @@ -88,6 +85,20 @@ class Changeset < ActiveRecord::Base def bbox @bbox ||= [ min_lon, min_lat, max_lon, max_lat ] end + + def has_valid_bbox? + not bbox.include? nil + end + + ## + # returns area of the changset bbox as a rough comparitive quantity for use of changset displays + def area + if has_valid_bbox? + (max_lon - min_lon) * (max_lat - min_lat) + else + 0 + end + end ## # expand the bounding box to include the given bounding box. also, @@ -101,10 +112,10 @@ class Changeset < ActiveRecord::Base # FIXME - this looks nasty and violates DRY... is there any prettier # way to do this? - @bbox[0] = array[0] + EXPAND * (@bbox[0] - @bbox[2]) if array[0] < @bbox[0] - @bbox[1] = array[1] + EXPAND * (@bbox[1] - @bbox[3]) if array[1] < @bbox[1] - @bbox[2] = array[2] + EXPAND * (@bbox[2] - @bbox[0]) if array[2] > @bbox[2] - @bbox[3] = array[3] + EXPAND * (@bbox[3] - @bbox[1]) if array[3] > @bbox[3] + @bbox[0] = [-180 * GeoRecord::SCALE, array[0] + EXPAND * (@bbox[0] - @bbox[2])].max if array[0] < @bbox[0] + @bbox[1] = [ -90 * GeoRecord::SCALE, array[1] + EXPAND * (@bbox[1] - @bbox[3])].max if array[1] < @bbox[1] + @bbox[2] = [ 180 * GeoRecord::SCALE, array[2] + EXPAND * (@bbox[2] - @bbox[0])].min if array[2] > @bbox[2] + @bbox[3] = [ 90 * GeoRecord::SCALE, array[3] + EXPAND * (@bbox[3] - @bbox[1])].min if array[3] > @bbox[3] # update active record. rails 2.1's dirty handling should take care of # whether this object needs saving or not. @@ -143,19 +154,9 @@ class Changeset < ActiveRecord::Base end def save_with_tags! - t = Time.now - # do the changeset update and the changeset tags update in the # same transaction to ensure consistency. Changeset.transaction do - # set the auto-close time to be one hour in the future unless - # that would make it more than 24h long, in which case clip to - # 24h, as this has been decided is a reasonable time limit. - if (closed_at - created_at) > (MAX_TIME_OPEN - IDLE_TIMEOUT) - self.closed_at = created_at + MAX_TIME_OPEN - else - self.closed_at = DateTime.now + IDLE_TIMEOUT - end self.save! tags = self.tags @@ -170,6 +171,20 @@ class Changeset < ActiveRecord::Base end end end + + ## + # set the auto-close time to be one hour in the future unless + # that would make it more than 24h long, in which case clip to + # 24h, as this has been decided is a reasonable time limit. + def before_save + if self.is_open? + if (closed_at - created_at) > (MAX_TIME_OPEN - IDLE_TIMEOUT) + self.closed_at = created_at + MAX_TIME_OPEN + else + self.closed_at = Time.now.getutc + IDLE_TIMEOUT + end + end + end def to_xml doc = OSM::API.new.get_xml_doc @@ -224,7 +239,7 @@ class Changeset < ActiveRecord::Base def update_from(other, user) # ensure that only the user who opened the changeset may modify it. unless user.id == self.user_id - raise OSM::APIUserChangesetMismatchError + raise OSM::APIUserChangesetMismatchError.new end # can't change a closed changeset