1 # amf_controller is a semi-standalone API for Flash clients, particularly
2 # Potlatch. All interaction between Potlatch (as a .SWF application) and the
3 # OSM database takes place using this controller. Messages are
4 # encoded in the Actionscript Message Format (AMF).
6 # Helper functions are in /lib/potlatch.rb
8 # Author:: editions Systeme D / Richard Fairhurst 2004-2008
9 # Licence:: public domain.
11 # == General structure
13 # Apart from the amf_read and amf_write methods (which distribute the requests
14 # from the AMF message), each method generally takes arguments in the order
15 # they were sent by the Potlatch SWF. Do not assume typing has been preserved.
16 # Methods all return an array to the SWF.
20 # Note that this requires a patched version of composite_primary_keys 1.1.0
21 # (see http://groups.google.com/group/compositekeys/t/a00e7562b677e193)
22 # if you are to run with POTLATCH_USE_SQL=false .
26 # Any method that returns a status code (0 for ok) can also send:
27 # return(-1,"message") <-- just puts up a dialogue
28 # return(-2,"message") <-- also asks the user to e-mail me
29 # return(-3,'type',id) <-- version conflict
31 # To write to the Rails log, use logger.info("message").
34 # * version conflict when POIs and ways are reverted
36 class AmfController < ApplicationController
41 # Help methods for checking boundary sanity and area size
45 before_filter :check_api_writable
47 # Main AMF handlers: process the raw AMF string (using AMF library) and
48 # calls each action (private method) accordingly.
49 # ** FIXME: refactor to reduce duplication of code across read/write
53 req=StringIO.new(request.raw_post+0.chr)# Get POST data as request
54 # (cf http://www.ruby-forum.com/topic/122163)
55 req.read(2) # Skip version indicator and client ID
56 results={} # Results of each body
60 headers=AMF.getint(req) # Read number of headers
62 headers.times do # Read each header
63 name=AMF.getstring(req) # |
64 req.getc # | skip boolean
65 value=AMF.getvalue(req) # |
66 header["name"]=value # |
69 bodies=AMF.getint(req) # Read number of bodies
70 bodies.times do # Read each body
71 message=AMF.getstring(req) # | get message name
72 index=AMF.getstring(req) # | get index in response sequence
73 bytes=AMF.getlong(req) # | get total size in bytes
74 args=AMF.getvalue(req) # | get response (probably an array)
75 logger.info("Executing AMF #{message}:#{index}")
78 when 'getpresets'; results[index]=AMF.putdata(index,getpresets())
79 when 'whichways'; results[index]=AMF.putdata(index,whichways(*args))
80 when 'whichways_deleted'; results[index]=AMF.putdata(index,whichways_deleted(*args))
81 when 'getway'; r=AMF.putdata(index,getway(args[0].to_i))
83 when 'getrelation'; results[index]=AMF.putdata(index,getrelation(args[0].to_i))
84 when 'getway_old'; results[index]=AMF.putdata(index,getway_old(args[0].to_i,args[1]))
85 when 'getway_history'; results[index]=AMF.putdata(index,getway_history(args[0].to_i))
86 when 'getnode_history'; results[index]=AMF.putdata(index,getnode_history(args[0].to_i))
87 when 'findgpx'; results[index]=AMF.putdata(index,findgpx(*args))
88 when 'findrelations'; results[index]=AMF.putdata(index,findrelations(*args))
89 when 'getpoi'; results[index]=AMF.putdata(index,getpoi(*args))
92 logger.info("encoding AMF results")
95 render :nothing => true, :status => :method_not_allowed
101 req=StringIO.new(request.raw_post+0.chr)
104 renumberednodes={} # Shared across repeated putways
105 renumberedways={} # Shared across repeated putways
107 headers=AMF.getint(req) # Read number of headers
108 headers.times do # Read each header
109 name=AMF.getstring(req) # |
110 req.getc # | skip boolean
111 value=AMF.getvalue(req) # |
112 header["name"]=value # |
115 bodies=AMF.getint(req) # Read number of bodies
116 bodies.times do # Read each body
117 message=AMF.getstring(req) # | get message name
118 index=AMF.getstring(req) # | get index in response sequence
119 bytes=AMF.getlong(req) # | get total size in bytes
120 args=AMF.getvalue(req) # | get response (probably an array)
122 logger.info("Executing AMF #{message}:#{index}")
124 when 'putway'; r=putway(renumberednodes,*args)
126 if r[1] != r[2] then renumberedways[r[1]] = r[2] end
127 results[index]=AMF.putdata(index,r)
128 when 'putrelation'; results[index]=AMF.putdata(index,putrelation(renumberednodes, renumberedways, *args))
129 when 'deleteway'; results[index]=AMF.putdata(index,deleteway(*args))
130 when 'putpoi'; r=putpoi(*args)
131 if r[1] != r[2] then renumberednodes[r[1]] = r[2] end
132 results[index]=AMF.putdata(index,r)
133 when 'startchangeset'; results[index]=AMF.putdata(index,startchangeset(*args))
136 logger.info("encoding AMF results")
137 sendresponse(results)
139 render :nothing => true, :status => :method_not_allowed
145 # Start new changeset
147 def startchangeset(usertoken, cstags, closeid, closecomment)
148 user = getuser(usertoken)
149 if !user then return -1,"You are not logged in, so Potlatch can't write any changes to the database." end
151 # close previous changeset and add comment
153 cs = Changeset.find(closeid)
154 cs.set_closed_time_now
155 if cs.user_id!=user.id
156 return -2,"You cannot close that changeset because you're not the person who opened it."
157 elsif closecomment.empty?
160 cs.tags['comment']=closecomment
165 # open a new changeset
169 # smsm1 doesn't like the next two lines and thinks they need to be abstracted to the model more/better
170 cs.created_at = Time.now.getutc
171 cs.closed_at = cs.created_at + Changeset::IDLE_TIMEOUT
176 # Return presets (default tags, localisation etc.):
177 # uses POTLATCH_PRESETS global, set up in OSM::Potlatch.
179 def getpresets() #:doc:
180 return POTLATCH_PRESETS
184 # Find all the ways, POI nodes (i.e. not part of ways), and relations
185 # in a given bounding box. Nodes are returned in full; ways and relations
188 # return is of the form:
190 # [[way_id, way_version], ...],
191 # [[node_id, lat, lon, [tags, ...], node_version], ...],
192 # [[rel_id, rel_version], ...]]
193 # where the ways are any visible ways which refer to any visible
194 # nodes in the bbox, nodes are any visible nodes in the bbox but not
195 # used in any way, rel is any relation which refers to either a way
196 # or node that we're returning.
197 def whichways(xmin, ymin, xmax, ymax) #:doc:
198 enlarge = [(xmax-xmin)/8,0.01].min
199 xmin -= enlarge; ymin -= enlarge
200 xmax += enlarge; ymax += enlarge
202 # check boundary is sane and area within defined
203 # see /config/application.yml
204 check_boundaries(xmin, ymin, xmax, ymax)
206 if POTLATCH_USE_SQL then
207 ways = sql_find_ways_in_area(xmin, ymin, xmax, ymax)
208 points = sql_find_pois_in_area(xmin, ymin, xmax, ymax)
209 relations = sql_find_relations_in_area_and_ways(xmin, ymin, xmax, ymax, ways.collect {|x| x[0]})
211 # find the way ids in an area
212 nodes_in_area = Node.find_by_area(ymin, xmin, ymax, xmax, :conditions => ["current_nodes.visible = ?", true], :include => :ways)
213 ways = nodes_in_area.inject([]) { |sum, node|
214 visible_ways = node.ways.select { |w| w.visible? }
215 sum + visible_ways.collect { |w| [w.id,w.version] }
219 # find the node ids in an area that aren't part of ways
220 nodes_not_used_in_area = nodes_in_area.select { |node| node.ways.empty? }
221 points = nodes_not_used_in_area.collect { |n| [n.id, n.lon, n.lat, n.tags, n.version] }.uniq
223 # find the relations used by those nodes and ways
224 relations = Relation.find_for_nodes(nodes_in_area.collect { |n| n.id }, :conditions => {:visible => true}) +
225 Relation.find_for_ways(ways.collect { |w| w[0] }, :conditions => {:visible => true})
226 relations = relations.collect { |relation| [relation.id,relation.version] }.uniq
229 [0, ways, points, relations]
231 rescue Exception => err
232 [-2,"Sorry - I can't get the map for that area. The server said: #{err}"]
235 # Find deleted ways in current bounding box (similar to whichways, but ways
236 # with a deleted node only - not POIs or relations).
238 def whichways_deleted(xmin, ymin, xmax, ymax) #:doc:
239 enlarge = [(xmax-xmin)/8,0.01].min
240 xmin -= enlarge; ymin -= enlarge
241 xmax += enlarge; ymax += enlarge
243 # check boundary is sane and area within defined
244 # see /config/application.yml
246 check_boundaries(xmin, ymin, xmax, ymax)
247 rescue Exception => err
248 return [-2,"Sorry - I can't get the map for that area. The server said: #{err}"]
251 nodes_in_area = Node.find_by_area(ymin, xmin, ymax, xmax, :conditions => ["current_ways.visible = ?", false], :include => :ways_via_history)
252 way_ids = nodes_in_area.collect { |node| node.ways_via_history_ids }.flatten.uniq
257 # Get a way including nodes and tags.
258 # Returns the way id, a Potlatch-style array of points, a hash of tags, and the version number.
260 def getway(wayid) #:doc:
261 if POTLATCH_USE_SQL then
262 points = sql_get_nodes_in_way(wayid)
263 tags = sql_get_tags_in_way(wayid)
264 version = sql_get_way_version(wayid)
266 # Ideally we would do ":include => :nodes" here but if we do that
267 # then rails only seems to return the first copy of a node when a
268 # way includes a node more than once
270 way = Way.find(wayid, :include => { :nodes => :node_tags })
271 rescue ActiveRecord::RecordNotFound
275 # check case where way has been deleted or doesn't exist
276 return [wayid,[],{}] if way.nil? or !way.visible
278 points = way.nodes.collect do |node|
280 nodetags.delete('created_by')
281 [node.lon, node.lat, node.id, nodetags, node.version]
284 version = way.version
287 [wayid, points, tags, version]
290 # Get an old version of a way, and all constituent nodes.
292 # For undelete (version<0), always uses the most recent version of each node,
293 # even if it's moved. For revert (version >= 0), uses the node in existence
294 # at the time, generating a new id if it's still visible and has been moved/
300 # 2. array of points,
303 # 5. is this the current, visible version? (boolean)
305 def getway_old(id, timestamp) #:doc:
308 old_way = OldWay.find(:first, :conditions => ['visible = ? AND id = ?', true, id], :order => 'version DESC')
309 points = old_way.get_nodes_undelete unless old_way.nil?
313 timestamp = DateTime.strptime(timestamp.to_s, "%d %b %Y, %H:%M:%S")
314 old_way = OldWay.find(:first, :conditions => ['id = ? AND timestamp <= ?', id, timestamp], :order => 'timestamp DESC')
316 points = old_way.get_nodes_revert(timestamp)
318 return [-1, "Sorry, the way was deleted at that time - please revert to a previous version."]
322 # thrown by date parsing method. leave old_way as nil for
323 # the superb error handler below.
328 # *** FIXME: shouldn't this be returning an error?
329 return [-1, id, [], {}, -1,0]
332 old_way.tags['history'] = "Retrieved from v#{old_way.version}"
333 return [0, id, points, old_way.tags, curway.version, (curway.version==old_way.version and curway.visible)]
337 # Find history of a way.
338 # Returns 'way', id, and an array of previous versions:
339 # - formerly [old_way.version, old_way.timestamp.strftime("%d %b %Y, %H:%M"), old_way.visible ? 1 : 0, user, uid]
340 # - now [timestamp,user,uid]
342 # Heuristic: Find all nodes that have ever been part of the way;
343 # get a list of their revision dates; add revision dates of the way;
344 # sort and collapse list (to within 2 seconds); trim all dates before the
345 # start date of the way.
347 def getway_history(wayid) #:doc:
350 # Find list of revision dates for way and all constituent nodes
353 Way.find(wayid).old_ways.collect do |a|
354 revdates.push(a.timestamp)
355 unless revusers.has_key?(a.timestamp.to_i) then revusers[a.timestamp.to_i]=change_user(a) end
357 Node.find(n).old_nodes.collect do |o|
358 revdates.push(o.timestamp)
359 unless revusers.has_key?(o.timestamp.to_i) then revusers[o.timestamp.to_i]=change_user(o) end
363 waycreated=revdates[0]
368 # Remove any dates (from nodes) before first revision date of way
369 revdates.delete_if { |d| d<waycreated }
370 # Remove any elements where 2 seconds doesn't elapse before next one
371 revdates.delete_if { |d| revdates.include?(d+1) or revdates.include?(d+2) }
372 # Collect all in one nested array
373 revdates.collect! {|d| [d.strftime("%d %b %Y, %H:%M:%S")] + revusers[d.to_i] }
375 return ['way',wayid,revdates]
376 rescue ActiveRecord::RecordNotFound
377 return ['way', wayid, []]
381 # Find history of a node. Returns 'node', id, and an array of previous versions as above.
383 def getnode_history(nodeid) #:doc:
385 history = Node.find(nodeid).old_nodes.reverse.collect do |old_node|
386 [old_node.timestamp.strftime("%d %b %Y, %H:%M:%S")] + change_user(old_node)
388 return ['node', nodeid, history]
389 rescue ActiveRecord::RecordNotFound
390 return ['node', nodeid, []]
395 user_object = obj.changeset.user
396 user = user_object.data_public? ? user_object.display_name : 'anonymous'
397 uid = user_object.data_public? ? user_object.id : 0
401 # Find GPS traces with specified name/id.
402 # Returns array listing GPXs, each one comprising id, name and description.
404 def findgpx(searchterm, usertoken)
405 user = getuser(usertoken)
406 if !uid then return -1,"You must be logged in to search for GPX traces." end
409 if searchterm.to_i>0 then
410 gpx = Trace.find(searchterm.to_i, :conditions => ["visible=? AND (public=? OR user_id=?)",true,true,user.id] )
412 gpxs.push([gpx.id, gpx.name, gpx.description])
415 Trace.find(:all, :limit => 21, :conditions => ["visible=? AND (public=? OR user_id=?) AND MATCH(name) AGAINST (?)",true,true,user.id,searchterm] ).each do |gpx|
416 gpxs.push([gpx.id, gpx.name, gpx.description])
422 # Get a relation with all tags and members.
426 # 2. list of members,
429 def getrelation(relid) #:doc:
431 rel = Relation.find(relid)
432 rescue ActiveRecord::RecordNotFound
433 return [relid, {}, []]
436 return [relid, {}, [], nil] if rel.nil? or !rel.visible
437 [relid, rel.tags, rel.members, rel.version]
440 # Find relations with specified name/id.
441 # Returns array of relations, each in same form as getrelation.
443 def findrelations(searchterm)
445 if searchterm.to_i>0 then
446 rel = Relation.find(searchterm.to_i)
447 if rel and rel.visible then
448 rels.push([rel.id, rel.tags, rel.members, rel.version])
451 RelationTag.find(:all, :limit => 11, :conditions => ["match(v) against (?)", searchterm] ).each do |t|
452 if t.relation.visible then
453 rels.push([t.relation.id, t.relation.tags, t.relation.members, t.relation.version])
463 # 1. original relation id (unchanged),
464 # 2. new relation id,
467 def putrelation(renumberednodes, renumberedways, usertoken, changeset_id, version, relid, tags, members, visible) #:doc:
468 user = getuser(usertoken)
469 if !user then return -1,"You are not logged in, so the relation could not be saved." end
472 visible = (visible.to_i != 0)
476 Relation.transaction do
477 # create a new relation, or find the existing one
479 relation = Relation.find(relid)
481 # We always need a new node, based on the data that has been sent to us
482 new_relation = Relation.new
484 # check the members are all positive, and correctly type
489 mid = renumberednodes[mid] if m[0] == 'Node'
490 mid = renumberedways[mid] if m[0] == 'Way'
493 typedmembers << [m[0], mid, m[2]]
497 # assign new contents
498 new_relation.members = typedmembers
499 new_relation.tags = tags
500 new_relation.visible = visible
501 new_relation.changeset_id = changeset_id
502 new_relation.version = version
505 # We're creating the relation
506 new_relation.create_with_history(user)
508 # We're updating the relation
509 new_relation.id = relid
510 relation.update_from(new_relation, user)
512 # We're deleting the relation
513 new_relation.id = relid
514 relation.delete_with_history!(new_relation, user)
519 return [0, relid, new_relation.id, new_relation.version]
521 return [0, relid, relid, relation.version]
523 rescue OSM::APIChangesetAlreadyClosedError => ex
524 return [-1, "The changeset #{ex.changeset.id} was closed at #{ex.changeset.closed_at}."]
525 rescue OSM::APIVersionMismatchError => ex
526 return [-3, "Sorry, someone else has changed this relation since you started editing. Please click the 'Edit' tab to reload the area. The server said: #{ex}"]
527 rescue OSM::APIAlreadyDeletedError => ex
528 return [-1, "The relation has already been deleted."]
529 rescue OSM::APIError => ex
530 # Some error that we don't specifically catch
531 return [-2, "An unusual error happened (in 'putrelation' #{relid}). The server said: #{ex}"]
534 # Save a way to the database, including all nodes. Any nodes in the previous
535 # version and no longer used are deleted.
538 # 0. hash of renumbered nodes (added by amf_controller)
539 # 1. current user token (for authentication)
540 # 2. current changeset
543 # 5. list of nodes in way
544 # 6. hash of way tags
545 # 7. array of nodes to change (each one is [lon,lat,id,version,tags]),
546 # 8. hash of nodes to delete (id->version).
549 # 0. '0' (code for success),
550 # 1. original way id (unchanged),
552 # 3. hash of renumbered nodes (old id=>new id),
554 # 5. hash of node versions (node=>version)
556 def putway(renumberednodes, usertoken, changeset_id, wayversion, originalway, pointlist, attributes, nodes, deletednodes) #:doc:
560 user = getuser(usertoken)
561 if !user then return -1,"You are not logged in, so the way could not be saved." end
562 if pointlist.length < 2 then return -2,"Server error - way is only #{points.length} points long." end
564 originalway = originalway.to_i
565 pointlist.collect! {|a| a.to_i }
567 way=nil # this is returned, so scope it outside the transaction
571 # -- Update each changed node
578 if id == 0 then return -2,"Server error - node with id 0 found in way #{originalway}." end
579 if lat== 90 then return -2,"Server error - node with latitude -90 found in way #{originalway}." end
580 if renumberednodes[id] then id = renumberednodes[id] end
583 node.changeset_id = changeset_id
587 node.tags.delete('created_by')
588 node.version = version
590 # We're creating the node
591 node.create_with_history(user)
592 renumberednodes[id] = node.id
593 nodeversions[node.id] = node.version
595 # We're updating an existing node
596 previous=Node.find(id)
598 previous.update_from(node, user)
599 nodeversions[previous.id] = previous.version
603 # -- Save revised way
605 pointlist.collect! {|a|
606 renumberednodes[a] ? renumberednodes[a]:a
609 new_way.tags = attributes
610 new_way.nds = pointlist
611 new_way.changeset_id = changeset_id
612 new_way.version = wayversion
614 new_way.create_with_history(user)
615 way=new_way # so we can get way.id and way.version
617 way = Way.find(originalway)
618 if way.tags!=attributes or way.nds!=pointlist or !way.visible?
619 new_way.id=originalway
620 way.update_from(new_way, user)
624 # -- Delete unwanted nodes
626 deletednodes.each do |id,v|
627 node = Node.find(id.to_i)
629 new_node.changeset_id = changeset_id
630 new_node.version = v.to_i
631 new_node.id = id.to_i
633 node.delete_with_history!(new_node, user)
634 rescue OSM::APIPreconditionFailedError => ex
635 # We don't do anything here as the node is being used elsewhere
636 # and we don't want to delete it
642 [0, originalway, way.id, renumberednodes, way.version, nodeversions, deletednodes]
643 rescue OSM::APIChangesetAlreadyClosedError => ex
644 return [-2, "Sorry, your changeset #{ex.changeset.id} has been closed (at #{ex.changeset.closed_at})."]
645 rescue OSM::APIVersionMismatchError => ex
646 return [-3, "Sorry, someone else has changed this way since you started editing. Click the 'Edit' tab to reload the area. The server said: #{ex}"]
647 rescue OSM::APITooManyWayNodesError => ex
648 return [-1, "You have tried to upload a really long way with #{ex.provided} points: only #{ex.max} are allowed."]
649 rescue OSM::APIAlreadyDeletedError => ex
650 return [-1, "The point has already been deleted."]
651 rescue OSM::APIError => ex
652 # Some error that we don't specifically catch
653 return [-2, "An unusual error happened (in 'putway' #{originalway}). The server said: #{ex}"]
656 # Save POI to the database.
657 # Refuses save if the node has since become part of a way.
658 # Returns array with:
660 # 1. original node id (unchanged),
664 def putpoi(usertoken, changeset_id, version, id, lon, lat, tags, visible) #:doc:
665 user = getuser(usertoken)
666 if !user then return -1,"You are not logged in, so the point could not be saved." end
669 visible = (visible.to_i == 1)
677 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
680 # We always need a new node, based on the data that has been sent to us
683 new_node.changeset_id = changeset_id
684 new_node.version = version
689 # We're creating the node
690 new_node.create_with_history(user)
692 # We're updating the node
694 node.update_from(new_node, user)
696 # We're deleting the node
698 node.delete_with_history!(new_node, user)
704 return [0, id, new_node.id, new_node.version]
706 return [0, id, node.id, node.version]
708 rescue OSM::APIChangesetAlreadyClosedError => ex
709 return [-1, "The changeset #{ex.changeset.id} was closed at #{ex.changeset.closed_at}"]
710 rescue OSM::APIVersionMismatchError => ex
711 return [-3, "Sorry, someone else has changed this point since you started editing. Please click the 'Edit' tab to reload the area. The server said: #{ex}"]
712 rescue OSM::APIAlreadyDeletedError => ex
713 return [-1, "The point has already been deleted"]
714 rescue OSM::APIError => ex
715 # Some error that we don't specifically catch
716 return [-2, "An unusual error happened (in 'putpoi' #{id}). The server said: #{ex}"]
719 # Read POI from database
720 # (only called on revert: POIs are usually read by whichways).
722 # Returns array of id, long, lat, hash of tags, (current) version.
724 def getpoi(id,timestamp) #:doc:
727 unless timestamp == ''
728 n = OldNode.find(id, :conditions=>['timestamp=?',DateTime.strptime(timestamp, "%d %b %Y, %H:%M:%S")])
732 return [n.id, n.lon, n.lat, n.tags, v]
734 return [nil, nil, nil, {}, nil]
738 # Delete way and all constituent nodes. Also removes from any relations.
742 # * the id of the way to change
743 # * the version of the way that was downloaded
744 # * a hash of the id and versions of all the nodes that are in the way, if any
745 # of the nodes have been changed by someone else then, there is a problem!
746 # Returns 0 (success), unchanged way id.
748 def deleteway(usertoken, changeset_id, way_id, way_version, deletednodes) #:doc:
749 user = getuser(usertoken)
750 unless user then return -1,"You are not logged in, so the way could not be deleted." end
753 # Need a transaction so that if one item fails to delete, the whole delete fails.
758 old_way = Way.find(way_id)
760 delete_way.version = way_version
761 delete_way.changeset_id = changeset_id
762 delete_way.id = way_id
763 old_way.delete_with_history!(delete_way, user)
765 # -- Delete unwanted nodes
767 deletednodes.each do |id,v|
768 node = Node.find(id.to_i)
770 new_node.changeset_id = changeset_id
771 new_node.version = v.to_i
772 new_node.id = id.to_i
774 node.delete_with_history!(new_node, user)
775 rescue OSM::APIPreconditionFailedError => ex
776 # We don't do anything with the exception as the node is in use
777 # elsewhere and we don't want to delete it
783 rescue OSM::APIChangesetAlreadyClosedError => ex
784 return [-1, "The changeset #{ex.changeset.id} was closed at #{ex.changeset.closed_at}"]
785 rescue OSM::APIVersionMismatchError => ex
786 # Really need to check to see whether this is a server load issue, and the
787 # last version was in the same changeset, or belongs to the same user, then
788 # we can return something different
789 return [-3, "Sorry, someone else has changed this way since you started editing. Please click the 'Edit' tab to reload the area."]
790 rescue OSM::APIAlreadyDeletedError => ex
791 return [-1, "The way has already been deleted."]
792 rescue OSM::APIError => ex
793 # Some error that we don't specifically catch
794 return [-2, "An unusual error happened (in 'deleteway' #{way_id}). The server said: #{ex}"]
798 # ====================================================================
802 # (can also be of form user:pass)
803 # When we are writing to the api, we need the actual user model,
804 # not just the id, hence this abstraction
806 def getuser(token) #:doc:
807 if (token =~ /^(.+)\:(.+)$/) then
808 user = User.authenticate(:username => $1, :password => $2)
810 user = User.authenticate(:token => token)
817 def sendresponse(results)
818 a,b=results.length.divmod(256)
819 render :content_type => "application/x-amf", :text => proc { |response, output|
820 # ** move amf writing loop into here -
821 # basically we read the messages in first (into an array of some sort),
822 # then iterate through that array within here, and do all the AMF writing
823 output.write 0.chr+0.chr+0.chr+0.chr+a.chr+b.chr
824 results.each do |k,v|
831 # ====================================================================
832 # Alternative SQL queries for getway/whichways
834 def sql_find_ways_in_area(xmin,ymin,xmax,ymax)
836 SELECT DISTINCT current_ways.id AS wayid,current_ways.version AS version
837 FROM current_way_nodes
838 INNER JOIN current_nodes ON current_nodes.id=current_way_nodes.node_id
839 INNER JOIN current_ways ON current_ways.id =current_way_nodes.id
840 WHERE current_nodes.visible=TRUE
841 AND current_ways.visible=TRUE
842 AND #{OSM.sql_for_area(ymin, xmin, ymax, xmax, "current_nodes.")}
844 return ActiveRecord::Base.connection.select_all(sql).collect { |a| [a['wayid'].to_i,a['version'].to_i] }
847 def sql_find_pois_in_area(xmin,ymin,xmax,ymax)
850 SELECT current_nodes.id,current_nodes.latitude*0.0000001 AS lat,current_nodes.longitude*0.0000001 AS lon,current_nodes.version
852 LEFT OUTER JOIN current_way_nodes cwn ON cwn.node_id=current_nodes.id
853 WHERE current_nodes.visible=TRUE
855 AND #{OSM.sql_for_area(ymin, xmin, ymax, xmax, "current_nodes.")}
857 ActiveRecord::Base.connection.select_all(sql).each do |row|
859 ActiveRecord::Base.connection.select_all("SELECT k,v FROM current_node_tags WHERE id=#{row['id']}").each do |n|
860 poitags[n['k']]=n['v']
862 pois << [row['id'].to_i, row['lon'].to_f, row['lat'].to_f, poitags, row['version'].to_i]
867 def sql_find_relations_in_area_and_ways(xmin,ymin,xmax,ymax,way_ids)
868 # ** It would be more Potlatchy to get relations for nodes within ways
869 # during 'getway', not here
871 SELECT DISTINCT cr.id AS relid,cr.version AS version
872 FROM current_relations cr
873 INNER JOIN current_relation_members crm ON crm.id=cr.id
874 INNER JOIN current_nodes cn ON crm.member_id=cn.id AND crm.member_type='Node'
875 WHERE #{OSM.sql_for_area(ymin, xmin, ymax, xmax, "cn.")}
877 unless way_ids.empty?
880 SELECT DISTINCT cr.id AS relid,cr.version AS version
881 FROM current_relations cr
882 INNER JOIN current_relation_members crm ON crm.id=cr.id
883 WHERE crm.member_type='Way'
884 AND crm.member_id IN (#{way_ids.join(',')})
887 ActiveRecord::Base.connection.select_all(sql).collect { |a| [a['relid'].to_i,a['version'].to_i] }
890 def sql_get_nodes_in_way(wayid)
893 SELECT latitude*0.0000001 AS lat,longitude*0.0000001 AS lon,current_nodes.id,current_nodes.version
894 FROM current_way_nodes,current_nodes
895 WHERE current_way_nodes.id=#{wayid.to_i}
896 AND current_way_nodes.node_id=current_nodes.id
897 AND current_nodes.visible=TRUE
900 ActiveRecord::Base.connection.select_all(sql).each do |row|
902 ActiveRecord::Base.connection.select_all("SELECT k,v FROM current_node_tags WHERE id=#{row['id']}").each do |n|
903 nodetags[n['k']]=n['v']
905 nodetags.delete('created_by')
906 points << [row['lon'].to_f,row['lat'].to_f,row['id'].to_i,nodetags,row['version'].to_i]
911 def sql_get_tags_in_way(wayid)
913 ActiveRecord::Base.connection.select_all("SELECT k,v FROM current_way_tags WHERE id=#{wayid.to_i}").each do |row|
914 tags[row['k']]=row['v']
919 def sql_get_way_version(wayid)
920 ActiveRecord::Base.connection.select_one("SELECT version FROM current_ways WHERE id=#{wayid.to_i}")