# OSM database takes place using this controller. Messages are
# encoded in the Actionscript Message Format (AMF).
#
-# Helper functions are in /lib/potlatch.
+# Helper functions are in /lib/potlatch.rb
#
# Author:: editions Systeme D / Richard Fairhurst 2004-2008
# Licence:: public domain.
args=AMF.getvalue(req) # | get response (probably an array)
case message
- when 'putway';
- r=putway(renumberednodes,*args)
- renumberednodes=r[3]
- if r[1] != r[2]
- renumberedways[r[1]] = r[2]
- end
- results[index]=AMF.putdata(index,r)
+ when 'putway'; r=putway(renumberednodes,*args)
+ renumberednodes=r[3]
+ if r[1] != r[2] then renumberedways[r[1]] = r[2] end
+ results[index]=AMF.putdata(index,r)
when 'putrelation'; results[index]=AMF.putdata(index,putrelation(renumberednodes, renumberedways, *args))
when 'deleteway'; results[index]=AMF.putdata(index,deleteway(*args))
- when 'putpoi'; results[index]=AMF.putdata(index,putpoi(*args))
+ when 'putpoi'; r=putpoi(*args)
+ if r[1] != r[2] then renumberednodes[r[1]] = r[2] end
+ results[index]=AMF.putdata(index,r)
when 'startchangeset'; results[index]=AMF.putdata(index,startchangeset(*args))
end
end
# Start new changeset
def startchangeset(usertoken, cstags, closeid, closecomment)
- uid = getuserid(usertoken)
- if !uid then return -1,"You are not logged in, so Potlatch can't write any changes to the database." end
+ user = getuser(usertoken)
+ if !user then return -1,"You are not logged in, so Potlatch can't write any changes to the database." end
# close previous changeset and add comment
if closeid
cs = Changeset.find(closeid)
cs.set_closed_time_now
- if closecomment.empty?
+ if cs.user_id!=user.id
+ return -2,"You cannot close that changeset because you're not the person who opened it."
+ elsif closecomment.empty?
cs.save!
else
cs.tags['comment']=closecomment
# open a new changeset
cs = Changeset.new
cs.tags = cstags
- cs.user_id = uid
- # Don't like the next two lines. These need to be abstracted to the model more/better
+ cs.user_id = user.id
+ # smsm1 doesn't like the next two lines and thinks they need to be abstracted to the model more/better
cs.created_at = Time.now
- cs.closed_at = Time.new + Changeset::IDLE_TIMEOUT
+ cs.closed_at = cs.created_at + Changeset::IDLE_TIMEOUT
cs.save_with_tags!
return [0,cs.id]
end
return POTLATCH_PRESETS
end
+ ##
# Find all the ways, POI nodes (i.e. not part of ways), and relations
# in a given bounding box. Nodes are returned in full; ways and relations
# are IDs only.
-
+ #
+ # return is of the form:
+ # [error_code,
+ # [[way_id, way_version], ...],
+ # [[node_id, lat, lon, [tags, ...], node_version], ...],
+ # [[rel_id, rel_version], ...]]
+ # where the ways are any visible ways which refer to any visible
+ # nodes in the bbox, nodes are any visible nodes in the bbox but not
+ # used in any way, rel is any relation which refers to either a way
+ # or node that we're returning.
def whichways(xmin, ymin, xmax, ymax) #:doc:
xmin -= 0.01; ymin -= 0.01
xmax += 0.01; ymax += 0.01
# check boundary is sane and area within defined
# see /config/application.yml
- begin
- check_boundaries(xmin, ymin, xmax, ymax)
- rescue Exception => err
- return [-2,"Sorry - I can't get the map for that area."]
- end
+ check_boundaries(xmin, ymin, xmax, ymax)
if POTLATCH_USE_SQL then
ways = sql_find_ways_in_area(xmin, ymin, xmax, ymax)
else
# find the way ids in an area
nodes_in_area = Node.find_by_area(ymin, xmin, ymax, xmax, :conditions => ["current_nodes.visible = ?", true], :include => :ways)
- ways = nodes_in_area.collect { |node|
- node.ways.collect { |w| [w.id,w.version] }.flatten
+ ways = nodes_in_area.inject([]) { |sum, node|
+ visible_ways = node.ways.select { |w| w.visible? }
+ sum + visible_ways.collect { |w| [w.id,w.version] }
}.uniq
ways.delete([])
# find the node ids in an area that aren't part of ways
nodes_not_used_in_area = nodes_in_area.select { |node| node.ways.empty? }
- points = nodes_not_used_in_area.collect { |n| [n.id, n.lon, n.lat, n.tags] }
+ points = nodes_not_used_in_area.collect { |n| [n.id, n.lon, n.lat, n.tags, n.version] }
# find the relations used by those nodes and ways
relations = Relation.find_for_nodes(nodes_in_area.collect { |n| n.id }, :conditions => {:visible => true}) +
end
[0,ways, points, relations]
+
+ rescue Exception => err
+ [-2,"Sorry - I can't get the map for that area."]
end
# Find deleted ways in current bounding box (similar to whichways, but ways
points = way.nodes.collect do |node|
nodetags=node.tags
nodetags.delete('created_by')
- [node.lon, node.lat, node.id, nodetags]
+ [node.lon, node.lat, node.id, nodetags, node.version]
end
tags = way.tags
version = way.version
# an array of previous versions.
def getnode_history(nodeid) #:doc:
- begin
- history = Node.find(nodeid).old_nodes.reverse.collect do |old_node|
- user_object = old_node.changeset.user
- user = user_object.data_public? ? user_object.display_name : 'anonymous'
- uid = user_object.data_public? ? user_object.id : 0
- [old_node.version, old_node.timestamp.strftime("%d %b %Y, %H:%M"), old_node.visible ? 1 : 0, user, uid]
- end
-
- return ['node',nodeid,history]
- rescue ActiveRecord::RecordNotFound
- return ['node', nodeid, []]
+ history = Node.find(nodeid).old_nodes.reverse.collect do |old_node|
+ user_object = old_node.changeset.user
+ user = user_object.data_public? ? user_object.display_name : 'anonymous'
+ uid = user_object.data_public? ? user_object.id : 0
+ [old_node.version, old_node.timestamp.strftime("%d %b %Y, %H:%M"), old_node.visible ? 1 : 0, user, uid]
end
+
+ return ['node',nodeid,history]
+ rescue ActiveRecord::RecordNotFound
+ return ['node', nodeid, []]
end
# Find GPS traces with specified name/id.
# Returns array listing GPXs, each one comprising id, name and description.
def findgpx(searchterm, usertoken)
- uid = getuserid(usertoken)
+ user = getuser(usertoken)
if !uid then return -1,"You must be logged in to search for GPX traces." end
gpxs = []
if searchterm.to_i>0 then
- gpx = Trace.find(searchterm.to_i, :conditions => ["visible=? AND (public=? OR user_id=?)",true,true,uid] )
+ gpx = Trace.find(searchterm.to_i, :conditions => ["visible=? AND (public=? OR user_id=?)",true,true,user.id] )
if gpx then
gpxs.push([gpx.id, gpx.name, gpx.description])
end
else
- Trace.find(:all, :limit => 21, :conditions => ["visible=? AND (public=? OR user_id=?) AND MATCH(name) AGAINST (?)",true,true,uid,searchterm] ).each do |gpx|
+ Trace.find(:all, :limit => 21, :conditions => ["visible=? AND (public=? OR user_id=?) AND MATCH(name) AGAINST (?)",true,true,user.id,searchterm] ).each do |gpx|
gpxs.push([gpx.id, gpx.name, gpx.description])
end
end
# 1. original relation id (unchanged),
# 2. new relation id.
- def putrelation(renumberednodes, renumberedways, usertoken, changeset, relid, tags, members, visible) #:doc:
- uid = getuserid(usertoken)
- if !uid then return -1,"You are not logged in, so the relation could not be saved." end
+ def putrelation(renumberednodes, renumberedways, usertoken, changeset, version, relid, tags, members, visible) #:doc:
+ user = getuser(usertoken)
+ if !user then return -1,"You are not logged in, so the relation could not be saved." end
relid = relid.to_i
visible = (visible.to_i != 0)
- # create a new relation, or find the existing one
- if relid <= 0
- rel = Relation.new
- rel.version = 0
- else
- rel = Relation.find(relid)
- end
-
- # check the members are all positive, and correctly type
- typedmembers = []
- members.each do |m|
- mid = m[1].to_i
- if mid < 0
- mid = renumberednodes[mid] if m[0] == 'node'
- mid = renumberedways[mid] if m[0] == 'way'
+ new_relation = nil
+ relation = nil
+ Relation.transaction do
+ # create a new relation, or find the existing one
+ if relid > 0
+ relation = Relation.find(relid)
end
- if mid
- typedmembers << [m[0], mid, m[2]]
+ # We always need a new node, based on the data that has been sent to us
+ new_relation = Relation.new
+
+ # check the members are all positive, and correctly type
+ typedmembers = []
+ members.each do |m|
+ mid = m[1].to_i
+ if mid < 0
+ mid = renumberednodes[mid] if m[0] == 'node'
+ mid = renumberedways[mid] if m[0] == 'way'
+ end
+ if mid
+ typedmembers << [m[0], mid, m[2]]
+ end
end
- end
- # assign new contents
- rel.members = typedmembers
- rel.tags = tags
- rel.visible = visible
- rel.changeset_id = changeset
+ # assign new contents
+ new_relation.members = typedmembers
+ new_relation.tags = tags
+ new_relation.visible = visible
+ new_relation.changeset_id = changeset
+ new_relation.version = version
- # check it then save it
- # BUG: the following is commented out because it always fails on my
- # install. I think it's a Rails bug.
- #if !rel.preconditions_ok?
- # return -2, "Relation preconditions failed"
- #else
- rel.save_with_history!
- #end
-
- [0, relid, rel.id]
+ if id <= 0
+ # We're creating the node
+ new_relation.create_with_history(user)
+ elsif visible
+ # We're updating the node
+ relation.update_from(new_relation, user)
+ else
+ # We're deleting the node
+ relation.delete_with_history!(new_relation, user)
+ end
+ end # transaction
+
+ if id <= 0
+ return [0, relid, new_relation.id, new_relation.version]
+ else
+ return [0, relid, relation.id, relation.version]
+ end
+ rescue OSM::APIChangesetAlreadyClosedError => ex
+ return [-1, "The changeset #{ex.changeset.id} was closed at #{ex.changeset.closed_at}."]
+ rescue OSM::APIVersionMismatchError => ex
+ # Really need to check to see whether this is a server load issue, and the
+ # last version was in the same changeset, or belongs to the same user, then
+ # we can return something different
+ return [-3, "You have taken too long to edit, please reload the area."]
+ rescue OSM::APIAlreadyDeletedError => ex
+ return [-1, "The object has already been deleted"]
+ rescue OSM::APIError => ex
+ # Some error that we don't specifically catch
+ return [-2, "Something really bad happened :-()"]
end
# Save a way to the database, including all nodes. Any nodes in the previous
# version and no longer used are deleted.
#
+ # Parameters:
+ # 0. hash of renumbered nodes (added by amf_controller)
+ # 1. current user token (for authentication)
+ # 2. current changeset
+ # 3. new way version
+ # 4. way ID
+ # 5. list of nodes in way
+ # 6. hash of way tags
+ # 7. array of nodes to change (each one is [lon,lat,id,version,tags])
+ #
# Returns:
# 0. '0' (code for success),
# 1. original way id (unchanged),
# 2. new way id,
# 3. hash of renumbered nodes (old id=>new id),
- # 4. version
+ # 4. way version,
+ # 5. hash of node versions (node=>version)
- def putway(renumberednodes, usertoken, changeset, originalway, points, attributes) #:doc:
+ def putway(renumberednodes, usertoken, changeset, version, originalway, pointlist, attributes, nodes) #:doc:
- # -- Initialise and carry out checks
+ # -- Initialise
- uid = getuserid(usertoken)
- if !uid then return -1,"You are not logged in, so the way could not be saved." end
+ user = getuser(usertoken)
+ if !user then return -1,"You are not logged in, so the way could not be saved." end
+ if pointlist.length < 2 then return -2,"Server error - way is only #{points.length} points long." end
originalway = originalway.to_i
+ pointlist.collect! {|a| a.to_i }
- points.each do |a|
- if a[2] == 0 or a[2].nil? then return -2,"Server error - node with id 0 found in way #{originalway}." end
- if a[1] == 90 then return -2,"Server error - node with lat -90 found in way #{originalway}." end
- end
-
- if points.length < 2 then return -2,"Server error - way is only #{points.length} points long." end
+ way=nil # this is returned, so scope it outside the transaction
+ nodeversions = {}
+ Way.transaction do
- # -- Get unique nodes
+ # -- Get unique nodes
- if originalway < 0
- way = Way.new
- way.version = 0 # otherwise +=1 breaks
- uniques = []
- else
- way = Way.find(originalway)
- uniques = way.unshared_node_ids
- end
-
- # -- Compare nodes and save changes to any that have changed
+ if originalway <= 0
+ uniques = []
+ else
+ way = Way.find(originalway)
+ uniques = way.unshared_node_ids
+ end
- nodes = []
+ #-- Update each changed node
- points.each do |n|
- lon = n[0].to_f
- lat = n[1].to_f
- id = n[2].to_i
- savenode = false
+ nodes.each do |a|
+ lon = a[0].to_f
+ lat = a[1].to_f
+ id = a[2].to_i
+ version = a[3].to_i
+ if id == 0 then return -2,"Server error - node with id 0 found in way #{originalway}." end
+ if lat== 90 then return -2,"Server error - node with latitude -90 found in way #{originalway}." end
+ if renumberednodes[id] then id = renumberednodes[id] end
- if renumberednodes[id]
- id = renumberednodes[id]
- elsif id < 0
- # Create new node
node = Node.new
- node.version = 0 # otherwise +=1 breaks
- savenode = true
- else
- node = Node.find(id)
- nodetags=node.tags
- nodetags.delete('created_by')
- if !fpcomp(lat, node.lat) or !fpcomp(lon, node.lon) or
- n[4] != nodetags or !node.visible?
- savenode = true
- end
- end
-
- if savenode
node.changeset_id = changeset
node.lat = lat
node.lon = lon
- node.tags = n[4]
- node.visible = true
- node.save_with_history!
-
- if id != node.id
+ node.tags = a[4]
+ node.tags.delete('created_by')
+ node.version = version
+ if id <= 0
+ # We're creating the node
+ node.create_with_history(user)
renumberednodes[id] = node.id
- id = node.id
+ nodeversions[node.id] = node.version
+ else
+ # We're updating an existing node
+ previous=Node.find(id)
+ previous.update_from(node, user)
+ nodeversions[previous.id] = previous.version
end
end
- uniques = uniques - [id]
- nodes.push(id)
- end
-
- # -- Delete any unique nodes
-
- uniques.each do |n|
- deleteitemrelations(n, 'node')
-
- node = Node.find(n)
- node.changeset_id = changeset
- node.visible = false
- node.save_with_history!
- end
-
- # -- Save revised way
+ # -- Delete any unique nodes no longer used
- if way.tags!=attributes or way.nds!=nodes or !way.visible?
- way.tags = attributes
- way.nds = nodes
- way.changeset_id = changeset
- way.visible = true
- way.save_with_history!
- end
+ uniques=uniques-pointlist
+ uniques.each do |n|
+ node = Node.find(n)
+ new_node = Node.new
+ new_node.changeset_id = changeset
+ new_node.version = version
+ node.delete_with_history!(new_node, user)
+ end
- [0, originalway, way.id, renumberednodes, way.version]
+ # -- Save revised way
+
+ pointlist.collect! {|a|
+ renumberednodes[a] ? renumberednodes[a]:a
+ } # renumber nodes
+ new_way = Way.new
+ new_way.tags = attributes
+ new_way.nds = pointlist
+ new_way.changeset_id = changeset
+ new_way.version = version
+ if originalway <= 0
+ new_way.create_with_history(user)
+ way=new_way # so we can get way.id and way.version
+ elsif way.tags!=attributes or way.nds!=pointlist or !way.visible?
+ way.update_from(new_way, user)
+ end
+ end # transaction
+
+ [0, originalway, way.id, renumberednodes, way.version, nodeversions]
+ rescue OSM::APIChangesetAlreadyClosedError => ex
+ return [-2, "Sorry, your changeset #{ex.changeset.id} has been closed (at #{ex.changeset.closed_at})."]
+ rescue OSM::APIVersionMismatchError => ex
+ # Really need to check to see whether this is a server load issue, and the
+ # last version was in the same changeset, or belongs to the same user, then
+ # we can return something different
+ return [-3, "Sorry, someone else has changed this way since you started editing - please reload the area"]
+ rescue OSM::APITooManyWayNodesError => ex
+ return [-1, "You have tried to upload a really long way with #{ex.provided} points: only #{ex.max} are allowed."]
+ rescue OSM::APIAlreadyDeletedError => ex
+ return [-1, "The object has already been deleted."]
+ rescue OSM::APIError => ex
+ # Some error that we don't specifically catch
+ return [-2, "Something really bad happened :-(."]
end
# Save POI to the database.
# Refuses save if the node has since become part of a way.
- # Returns:
+ # Returns array with:
# 0. 0 (success),
# 1. original node id (unchanged),
# 2. new node id,
# 3. version.
- def putpoi(usertoken, changeset, id, lon, lat, tags, visible) #:doc:
- uid = getuserid(usertoken)
- if !uid then return -1,"You are not logged in, so the point could not be saved." end
+ def putpoi(usertoken, changeset, version, id, lon, lat, tags, visible) #:doc:
+ user = getuser(usertoken)
+ if !user then return -1,"You are not logged in, so the point could not be saved." end
id = id.to_i
visible = (visible.to_i == 1)
+ node = nil
+ new_node = nil
+ Node.transaction do
+ if id > 0 then
+ node = Node.find(id)
- if id > 0 then
- node = Node.find(id)
-
- if !visible then
- unless node.ways.empty? then return -1,"The point has since become part of a way, so you cannot save it as a POI." end
- deleteitemrelations(id, 'node')
+ if !visible then
+ unless node.ways.empty? then return -1,"The point has since become part of a way, so you cannot save it as a POI." end
+ deleteitemrelations(id, 'node')
+ end
end
- else
- node = Node.new
- node.version = 0
- end
-
- node.changeset_id = changeset
- node.lat = lat
- node.lon = lon
- node.tags = tags
- node.visible = visible
- node.save_with_history!
+ # We always need a new node, based on the data that has been sent to us
+ new_node = Node.new
+
+ new_node.changeset_id = changeset
+ new_node.version = version
+ new_node.lat = lat
+ new_node.lon = lon
+ new_node.tags = tags
+ if id <= 0
+ # We're creating the node
+ new_node.create_with_history(user)
+ elsif visible
+ # We're updating the node
+ node.update_from(new_node, user)
+ else
+ # We're deleting the node
+ node.delete_with_history!(new_node, user)
+ end
+ end # transaction
- [0, id, node.id, node.version]
+ if id <= 0
+ return [0, id, new_node.id, new_node.version]
+ else
+ return [0, id, node.id, node.version]
+ end
+ rescue OSM::APIChangesetAlreadyClosedError => ex
+ return [-1, "The changeset #{ex.changeset.id} was closed at #{ex.changeset.closed_at}"]
+ rescue OSM::APIVersionMismatchError => ex
+ # Really need to check to see whether this is a server load issue, and the
+ # last version was in the same changeset, or belongs to the same user, then
+ # we can return something different
+ return [-3, "You have taken too long to edit, please reload the area"]
+ rescue OSM::APIAlreadyDeletedError => ex
+ return [-1, "The object has already been deleted"]
+ rescue OSM::APIError => ex
+ # Some error that we don't specifically catch
+ return [-2, "Something really bad happened :-()"]
end
# Read POI from database
end
# Delete way and all constituent nodes. Also removes from any relations.
+ # Params:
+ # * The user token
+ # * the changeset id
+ # * the id of the way to change
+ # * the version of the way that was downloaded
+ # * a hash of the id and versions of all the nodes that are in the way, if any
+ # of the nodes have been changed by someone else then, there is a problem!
# Returns 0 (success), unchanged way id.
- def deleteway(usertoken, changeset_id, way_id) #:doc:
- if !getuserid(usertoken) then return -1,"You are not logged in, so the way could not be deleted." end
-
+ def deleteway(usertoken, changeset_id, way_id, way_version, node_id_version) #:doc:
+ user = getuser(usertoken)
+ unless user then return -1,"You are not logged in, so the way could not be deleted." end
+
way_id = way_id.to_i
-
- # FIXME: would be good not to make two history entries when removing
- # two nodes from the same relation
- way = Way.find(way_id)
- way.unshared_node_ids.each do |n|
- deleteitemrelations(n, 'node')
- end
- deleteitemrelations(way_id, 'way')
-
- way.delete_with_relations_and_nodes_and_history(changeset_id.to_i)
-
+ # Need a transaction so that if one item fails to delete, the whole delete fails.
+ Way.transaction do
+
+ # FIXME: would be good not to make two history entries when removing
+ # two nodes from the same relation
+ old_way = Way.find(way_id)
+ #old_way.unshared_node_ids.each do |n|
+ # deleteitemrelations(n, 'node')
+ #end
+ #deleteitemrelations(way_id, 'way')
+
+
+ #way.delete_with_relations_and_nodes_and_history(changeset_id.to_i)
+ old_way.unshared_node_ids.each do |node_id|
+ # delete the node
+ node = Node.find(node_id)
+ delete_node = Node.new
+ delete_node.version = node_id_version[node_id]
+ node.delete_with_history!(delete_node, user)
+ end
+ # delete the way
+ delete_way = Way.new
+ delete_way.version = way_version
+ old_way.delete_with_history!(delete_way, user)
+ end # transaction
[0, way_id]
+ rescue OSM::APIChangesetAlreadyClosedError => ex
+ return [-1, "The changeset #{ex.changeset.id} was closed at #{ex.changeset.closed_at}"]
+ rescue OSM::APIVersionMismatchError => ex
+ # Really need to check to see whether this is a server load issue, and the
+ # last version was in the same changeset, or belongs to the same user, then
+ # we can return something different
+ return [-3, "You have taken too long to edit, please reload the area"]
+ rescue OSM::APIAlreadyDeletedError => ex
+ return [-1, "The object has already been deleted"]
+ rescue OSM::APIError => ex
+ # Some error that we don't specifically catch
+ return [-2, "Something really bad happened :-()"]
end
# ====================================================================
# Support functions
+ # delete a way and its nodes that aren't part of other ways
+ # this functionality used to be in the model, however it is specific to amf
+ # controller
+ #def delete_unshared_nodes(changeset_id, way_id)
+
# Remove a node or way from all relations
-
- def deleteitemrelations(objid, type) #:doc:
+ # FIXME needs version, changeset, and user
+ # Fixme make sure this doesn't depend on anything and delete this, as potlatch
+ # itself should remove the relations first
+ def deleteitemrelations(objid, type, version) #:doc:
relations = RelationMember.find(:all,
:conditions => ['member_type = ? and member_id = ?', type, objid],
:include => :relation).collect { |rm| rm.relation }.uniq
relations.each do |rel|
rel.members.delete_if { |x| x[0] == type and x[1] == objid }
- rel.save_with_history!
+ # FIXME need to create the new relation
+ new_rel = Relation.new
+ new_rel.version = version
+ new_rel.members = members
+ new_rel.changeset = changeset
+ rel.delete_with_history(new_rel, user)
end
end
# Authenticate token
# (can also be of form user:pass)
+ # When we are writing to the api, we need the actual user model,
+ # not just the id, hence this abstraction
- def getuserid(token) #:doc:
+ def getuser(token) #:doc:
if (token =~ /^(.+)\:(.+)$/) then
user = User.authenticate(:username => $1, :password => $2)
else
user = User.authenticate(:token => token)
end
-
- return user ? user.id : nil;
- end
-
- # Compare two floating-point numbers to within 0.0000001
-
- def fpcomp(a,b) #:doc:
- return ((a/0.0000001).round==(b/0.0000001).round)
+ return user
end
# Send AMF response
projects / rails.git / blobdiff