-# 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
+# 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).
#
# Helper functions are in /lib/potlatch.rb
# == General structure
#
# Apart from the amf_read and amf_write methods (which distribute the requests
-# from the AMF message), each method generally takes arguments in the order
-# they were sent by the Potlatch SWF. Do not assume typing has been preserved.
+# from the AMF message), each method generally takes arguments in the order
+# they were sent by the Potlatch SWF. Do not assume typing has been preserved.
# Methods all return an array to the SWF.
#
# == API 0.6
#
# Note that this requires a patched version of composite_primary_keys 1.1.0
-# (see http://groups.google.com/group/compositekeys/t/a00e7562b677e193)
+# (see http://groups.google.com/group/compositekeys/t/a00e7562b677e193)
# if you are to run with POTLATCH_USE_SQL=false .
-#
+#
# == Debugging
-#
+#
# Any method that returns a status code (0 for ok) can also send:
# return(-1,"message") <-- just puts up a dialogue
# return(-2,"message") <-- also asks the user to e-mail me
# return(-3,["type",v],id) <-- version conflict
# return(-4,"type",id) <-- object not found
# -5 indicates the method wasn't called (due to a previous error)
-#
+#
# To write to the Rails log, use logger.info("message").
# Remaining issues:
# Main AMF handlers: process the raw AMF string (using AMF library) and
# calls each action (private method) accordingly.
-
+
def amf_read
self.status = :ok
self.content_type = Mime::AMF
when 'findrelations'; result = findrelations(*args)
when 'getpoi'; result = getpoi(*args)
end
-
+
result
end
end
# Start new changeset
# Returns success_code,success_message,changeset id
-
+
def startchangeset(usertoken, cstags, closeid, closecomment, opennew)
amf_handle_error("'startchangeset'",nil,nil) do
user = getuser(usertoken)
cs.save_with_tags!
end
end
-
+
# open a new changeset
if opennew!=0
cs = Changeset.new
cs.tags = cstags
cs.user_id = user.id
- if !closecomment.empty?
- cs.tags['comment']=closecomment
+ if !closecomment.empty?
+ cs.tags['comment']=closecomment
# in case closecomment has chars not allowed in xml
cs.tags = strip_non_xml_chars cs.tags
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.
+ # in a given bounding box. Nodes are returned in full; ways and relations
+ # are IDs only.
#
- # return is of the form:
+ # return is of the form:
# [success_code, success_message,
# [[way_id, way_version], ...],
# [[node_id, lat, lon, [tags, ...], node_version], ...],
else
# find the way ids in an area
nodes_in_area = Node.bbox(bbox).visible.includes(:ways)
- ways = nodes_in_area.inject([]) { |sum, node|
+ 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
# Ideally we would do ":include => :nodes" here but if we do that
# then rails only seems to return the first copy of a node when a
# way includes a node more than once
- way = Way.where(:id => wayid).preload(:nodes => :node_tags).first
+ way = Way.where(:id => wayid).first
# check case where way has been deleted or doesn't exist
return [-4, 'way', wayid] if way.nil? or !way.visible
- points = way.nodes.collect do |node|
+ points = way.nodes.preload(:node_tags).collect do |node|
nodetags=node.tags
nodetags.delete('created_by')
[node.lon, node.lat, node.id, nodetags, node.version]
[0, '', wayid, points, tags, version, uid]
end
end
-
+
# Get an old version of a way, and all constituent nodes.
#
- # For undelete (version<0), always uses the most recent version of each node,
- # even if it's moved. For revert (version >= 0), uses the node in existence
+ # For undelete (version<0), always uses the most recent version of each node,
+ # even if it's moved. For revert (version >= 0), uses the node in existence
# at the time, generating a new id if it's still visible and has been moved/
# retagged.
#
# Returns:
- # 0. success code,
- # 1. id,
- # 2. array of points,
- # 3. hash of tags,
- # 4. version,
+ # 0. success code,
+ # 1. id,
+ # 2. array of points,
+ # 3. hash of tags,
+ # 4. version,
# 5. is this the current, visible version? (boolean)
-
+
def getway_old(id, timestamp) #:doc:
amf_handle_error_with_timeout("'getway_old' #{id}, #{timestamp}", 'way',id) do
if timestamp == ''
end
end
end
-
+
# Find history of a way.
# Returns 'way', id, and an array of previous versions:
# - formerly [old_way.version, old_way.timestamp.strftime("%d %b %Y, %H:%M"), old_way.visible ? 1 : 0, user, uid]
# - now [timestamp,user,uid]
#
- # Heuristic: Find all nodes that have ever been part of the way;
+ # Heuristic: Find all nodes that have ever been part of the way;
# get a list of their revision dates; add revision dates of the way;
- # sort and collapse list (to within 2 seconds); trim all dates before the
+ # sort and collapse list (to within 2 seconds); trim all dates before the
# start date of the way.
def getway_history(wayid) #:doc:
return ['way', wayid, []]
end
end
-
+
# Find history of a node. Returns 'node', id, and an array of previous versions as above.
def getnode_history(nodeid) #:doc:
- begin
+ begin
history = Node.find(nodeid).old_nodes.unredacted.reverse.collect do |old_node|
[(old_node.timestamp + 1).strftime("%d %b %Y, %H:%M:%S")] + change_user(old_node)
end
# Find GPS traces with specified name/id.
# Returns array listing GPXs, each one comprising id, name and description.
-
+
def findgpx(searchterm, usertoken)
amf_handle_error_with_timeout("'findgpx'" ,nil,nil) do
user = getuser(usertoken)
# 3. hash of tags,
# 4. list of members,
# 5. version.
-
+
def getrelation(relid) #:doc:
amf_handle_error("'getrelation' #{relid}" ,'relation',relid) do
rel = Relation.where(:id => relid).first
# Find relations with specified name/id.
# Returns array of relations, each in same form as getrelation.
-
+
def findrelations(searchterm)
rels = []
if searchterm.to_i>0 then
relation.delete_with_history!(new_relation, user)
end
end # transaction
-
+
if relid <= 0
return [0, '', relid, new_relation.id, new_relation.version]
else
# 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)
# 6. hash of way tags
# 7. array of nodes to change (each one is [lon,lat,id,version,tags]),
# 8. hash of nodes to delete (id->version).
- #
+ #
# Returns:
# 0. '0' (code for success),
# 1. message,
def putway(renumberednodes, usertoken, changeset_id, wayversion, originalway, pointlist, attributes, nodes, deletednodes) #:doc:
amf_handle_error("'putway' #{originalway}" ,'way',originalway) do
# -- Initialise
-
+
user = getuser(usertoken)
if !user then return -1,"You are not logged in, so the way could not be saved." end
if user.blocks.active.exists? then return -1,t('application.setup_user_auth.blocked') end
new_node.lat = lat
new_node.lon = lon
new_node.tags = tags
- if id <= 0
+ if id <= 0
# We're creating the node
new_node.create_with_history(user)
elsif visible
return [0, '', id, new_node.id, new_node.version]
else
return [0, '', id, node.id, node.version]
- end
+ end
end
end
# * 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
+ # * 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, new way version, new node versions.
unless user then return -1,"You are not logged in, so the way could not be deleted." end
if user.blocks.active.exists? then return -1,t('application.setup_user_auth.blocked') end
if REQUIRE_TERMS_AGREED and user.terms_agreed.nil? then return -1,"You must accept the contributor terms before you can edit." end
-
+
way_id = way_id.to_i
nodeversions = {}
old_way=nil # returned, so scope it outside the transaction
# Authenticate token
# (can also be of form user:pass)
- # When we are writing to the api, we need the actual user model,
+ # When we are writing to the api, we need the actual user model,
# not just the id, hence this abstraction
def getuser(token) #:doc:
def getlocales
Dir.glob("#{Rails.root}/config/potlatch/locales/*").collect { |f| File.basename(f, ".yml") }
end
-
+
##
# check that all key-value pairs are valid UTF-8.
def tags_ok(tags)
FROM current_way_nodes
INNER JOIN current_nodes ON current_nodes.id=current_way_nodes.node_id
INNER JOIN current_ways ON current_ways.id =current_way_nodes.id
- WHERE current_nodes.visible=TRUE
- AND current_ways.visible=TRUE
+ WHERE current_nodes.visible=TRUE
+ AND current_ways.visible=TRUE
AND #{OSM.sql_for_area(bbox, "current_nodes.")}
EOF
return ActiveRecord::Base.connection.select_all(sql).collect { |a| [a['wayid'].to_i,a['version'].to_i] }
end
-
+
def sql_find_pois_in_area(bbox)
pois=[]
sql=<<-EOF
- SELECT current_nodes.id,current_nodes.latitude*0.0000001 AS lat,current_nodes.longitude*0.0000001 AS lon,current_nodes.version
- FROM current_nodes
- LEFT OUTER JOIN current_way_nodes cwn ON cwn.node_id=current_nodes.id
+ SELECT current_nodes.id,current_nodes.latitude*0.0000001 AS lat,current_nodes.longitude*0.0000001 AS lon,current_nodes.version
+ FROM current_nodes
+ LEFT OUTER JOIN current_way_nodes cwn ON cwn.node_id=current_nodes.id
WHERE current_nodes.visible=TRUE
AND cwn.id IS NULL
AND #{OSM.sql_for_area(bbox, "current_nodes.")}
end
pois
end
-
+
def sql_find_relations_in_area_and_ways(bbox,way_ids)
# ** It would be more Potlatchy to get relations for nodes within ways
# during 'getway', not here
sql=<<-EOF
- SELECT DISTINCT cr.id AS relid,cr.version AS version
+ SELECT DISTINCT cr.id AS relid,cr.version AS version
FROM current_relations cr
- INNER JOIN current_relation_members crm ON crm.id=cr.id
- INNER JOIN current_nodes cn ON crm.member_id=cn.id AND crm.member_type='Node'
+ INNER JOIN current_relation_members crm ON crm.id=cr.id
+ INNER JOIN current_nodes cn ON crm.member_id=cn.id AND crm.member_type='Node'
WHERE #{OSM.sql_for_area(bbox, "cn.")}
EOF
unless way_ids.empty?
SELECT DISTINCT cr.id AS relid,cr.version AS version
FROM current_relations cr
INNER JOIN current_relation_members crm ON crm.id=cr.id
- WHERE crm.member_type='Way'
+ WHERE crm.member_type='Way'
AND crm.member_id IN (#{way_ids.join(',')})
EOF
end
ActiveRecord::Base.connection.select_all(sql).collect { |a| [a['relid'].to_i,a['version'].to_i] }
end
-
+
def sql_get_nodes_in_way(wayid)
points=[]
sql=<<-EOF
- SELECT latitude*0.0000001 AS lat,longitude*0.0000001 AS lon,current_nodes.id,current_nodes.version
- FROM current_way_nodes,current_nodes
- WHERE current_way_nodes.id=#{wayid.to_i}
- AND current_way_nodes.node_id=current_nodes.id
+ SELECT latitude*0.0000001 AS lat,longitude*0.0000001 AS lon,current_nodes.id,current_nodes.version
+ FROM current_way_nodes,current_nodes
+ WHERE current_way_nodes.id=#{wayid.to_i}
+ AND current_way_nodes.node_id=current_nodes.id
AND current_nodes.visible=TRUE
ORDER BY sequence_id
EOF
end
points
end
-
+
def sql_get_tags_in_way(wayid)
tags={}
ActiveRecord::Base.connection.select_all("SELECT k,v FROM current_way_tags WHERE id=#{wayid.to_i}").each do |row|
ActiveRecord::Base.connection.select_one("SELECT user FROM current_ways,changesets WHERE current_ways.id=#{wayid.to_i} AND current_ways.changeset=changesets.id")['user']
end
end
-
projects / rails.git / blobdiff