+# AMF Controller is a semi-standalone API for Flash clients, particularly Potlatch
+# All interaction between Potlatch (as a .SWF application) and the
+# OSM database takes place using this controller. Messages are
+# encoded in the Actionscript Message Format (AMF).
+#
+# Public domain.
+# editions Systeme D / Richard Fairhurst 2004-2008
+#
+# All in/out parameters are floats unless explicitly stated.
+#
+# to trap errors (getway_old,putway,putpoi,deleteway only):
+# return(-1,"message") <-- just puts up a dialogue
+# return(-2,"message") <-- also asks the user to e-mail me
+# to log:
+# RAILS_DEFAULT_LOGGER.error("Args: #{args[0]}, #{args[1]}, #{args[2]}, #{args[3]}")
+
class AmfController < ApplicationController
require 'stringio'
session :off
before_filter :check_write_availability
- # AMF controller for Potlatch
- # ---------------------------
- # All interaction between Potlatch (as a .SWF application) and the
- # OSM database takes place using this controller. Messages are
- # encoded in the Actionscript Message Format (AMF).
- #
- # Public domain. Set your tab width to 4 to read this document. :)
- # editions Systeme D / Richard Fairhurst 2004-2008
- #
- # All in/out parameters are floats unless explicitly stated.
- #
- # to trap errors (getway_old,putway,putpoi,deleteway only):
- # return(-1,"message") <-- just puts up a dialogue
- # return(-2,"message") <-- also asks the user to e-mail me
- # to log:
- # RAILS_DEFAULT_LOGGER.error("Args: #{args[0]}, #{args[1]}, #{args[2]}, #{args[3]}")
-
- # ====================================================================
- # Main AMF handler
-
- # ---- talk process AMF request
-
+ # Main AMF handler. Tha talk method takes in AMF, figures out what to do and dispatched to the appropriate private method
def talk
req=StringIO.new(request.raw_post+0.chr) # Get POST data as request
# (cf http://www.ruby-forum.com/topic/122163)
when 'getway_old'; results[index]=putdata(index,getway_old(args))
when 'getway_history'; results[index]=putdata(index,getway_history(args))
when 'putway'; r=putway(args,renumberednodes)
- renumberednodes=r[3]
- results[index]=putdata(index,r)
+ renumberednodes=r[3]
+ results[index]=putdata(index,r)
when 'deleteway'; results[index]=putdata(index,deleteway(args))
when 'putpoi'; results[index]=putdata(index,putpoi(args))
when 'getpoi'; results[index]=putdata(index,getpoi(args))
# ====================================================================
# Remote calls
-
-
# ----- whichways
-
# Find all the way ids and nodes (including tags and projected lat/lng) which aren't part of those ways in an are
#
# The argument is an array containing the following, in order:
# 2. maximum longitude
# 3. maximum latitude
# 4. baselong, 5. basey, 6. masterscale as above
-
def whichways(args)
xmin = args[0].to_f-0.01
ymin = args[1].to_f-0.01
# in: as whichways
# does: finds all deleted ways with a deleted node in bounding box
# out: [0] array of way ids
-
def whichways_deleted(args)
xmin = args[0].to_f-0.01
ymin = args[1].to_f-0.01
basey = args[5]
masterscale = args[6]
-
-
sql=<<-EOF
SELECT DISTINCT current_ways.id
FROM current_nodes,way_nodes,current_ways
[ways]
end
-
# ----- getway
-
# Get a way with all of it's nodes and tags
# The input is an array with the following components, in order:
# 0. wayid - the ID of the way to get
projected_latitude = node.lat_potlatch(basey,masterscale)
id = node.id
tags_hash = node.tags_as_hash
-
+
points << [projected_longitude, projected_latitude, id, nil, tags_hash]
long_array << projected_longitude
lat_array << projected_latitude
# ----- getway_old
# returns old version of way
-
# in: [0] way id,
# [1] way version to get (or -1 for "last deleted version")
# [2] baselong, [3] basey, [4] masterscale
# [2] array of points (as getway _except_ [3] is node.visible?, 0 or 1),
# [4] xmin, [5] xmax, [6] ymin, [7] ymax (unprojected bbox),
# [8] way version
-
def getway_old(args)
RAILS_DEFAULT_LOGGER.info(" Message: getway_old (server is #{SERVER_URL})")
# if SERVER_URL=="www.openstreetmap.org" then return -1,"Revert is not currently enabled on the OpenStreetMap server." end
# ----- getway_history
# find history of a way
-
# in: [0] way id
# does: finds history of a way
# out: [0] array of previous versions (where each is
# [0] version, [1] db timestamp (string),
# [2] visible 0 or 1,
# [3] username or 'anonymous' (string))
-
def getway_history(args)
wayid=args[0]
history=[]
# ----- putway
# saves a way to the database
-
# in: [0] user token (string),
# [1] original way id (may be negative),
# [2] array of points (as getway/getway_old),
# out: [0] 0 (code for success), [1] original way id (unchanged),
# [2] new way id, [3] hash of renumbered nodes (old id=>new id),
# [4] xmin, [5] xmax, [6] ymin, [7] ymax (unprojected bbox)
-
def putway(args,renumberednodes)
RAILS_DEFAULT_LOGGER.info(" putway started")
usertoken,originalway,points,attributes,oldversion,baselong,basey,masterscale=args
end
end
-
# -- 6a. delete any nodes not in modified way
createuniquenodes(way,db_uqn,nodelist) # nodes which appear in this way but no other
# ----- putpoi
# save POI to the database
-
# in: [0] user token (string),
# [1] original node id (may be negative),
# [2] projected longitude, [3] projected latitude,
# refuses save if the node has since become part of a way
# out: [0] 0 (success), [1] original node id (unchanged),
# [2] new node id
-
def putpoi(args)
usertoken,id,x,y,tags,visible,baselong,basey,masterscale=args
uid=getuserid(usertoken)
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