| Class | DRb::DRbObject |
| In: |
lib/drb/eq.rb
lib/drb/gw.rb lib/drb/drb.rb |
| Parent: | Object |
Unmarshall a marshalled DRbObject.
If the referenced object is located within the local server, then the object itself is returned. Otherwise, a new DRbObject is created to act as a stub for the remote referenced object.
# File lib/drb/drb.rb, line 1003
1003: def self._load(s)
1004: uri, ref = Marshal.load(s)
1005:
1006: if DRb.here?(uri)
1007: obj = DRb.to_obj(ref)
1008: if ((! obj.tainted?) && Thread.current[:drb_untaint])
1009: Thread.current[:drb_untaint].push(obj)
1010: end
1011: return obj
1012: end
1013:
1014: self.new_with(uri, ref)
1015: end
# File lib/drb/gw.rb, line 35
35: def self._load(s)
36: uri, ref = Marshal.load(s)
37: if DRb.uri == uri
38: return ref ? DRb.to_obj(ref) : DRb.front
39: end
40:
41: self.new_with(DRb.uri, [:DRbObject, uri, ref])
42: end
Create a new remote object stub.
obj is the (local) object we want to create a stub for. Normally this is nil. uri is the URI of the remote object that this will be a stub for.
# File lib/drb/drb.rb, line 1041
1041: def initialize(obj, uri=nil)
1042: @uri = nil
1043: @ref = nil
1044: if obj.nil?
1045: return if uri.nil?
1046: @uri, option = DRbProtocol.uri_option(uri, DRb.config)
1047: @ref = DRbURIOption.new(option) unless option.nil?
1048: else
1049: @uri = uri ? uri : (DRb.uri rescue nil)
1050: @ref = obj ? DRb.to_id(obj) : nil
1051: end
1052: end
# File lib/drb/drb.rb, line 1017
1017: def self.new_with(uri, ref)
1018: it = self.allocate
1019: it.instance_variable_set('@uri', uri)
1020: it.instance_variable_set('@ref', ref)
1021: it
1022: end
# File lib/drb/drb.rb, line 1114
1114: def self.prepare_backtrace(uri, result)
1115: prefix = "(#{uri}) "
1116: bt = []
1117: result.backtrace.each do |x|
1118: break if /`__send__'$/ =~ x
1119: if /^\(druby:\/\// =~ x
1120: bt.push(x)
1121: else
1122: bt.push(prefix + x)
1123: end
1124: end
1125: bt
1126: end
# File lib/drb/drb.rb, line 1103
1103: def self.with_friend(uri)
1104: friend = DRb.fetch_server(uri)
1105: return yield() unless friend
1106:
1107: save = Thread.current['DRb']
1108: Thread.current['DRb'] = { 'server' => friend }
1109: return yield
1110: ensure
1111: Thread.current['DRb'] = save if friend
1112: end
# File lib/drb/eq.rb, line 5 5: def ==(other) 6: return false unless DRbObject === other 7: (@ref == other.__drbref) && (@uri == other.__drburi) 8: end
Get the reference of the object, if local.
# File lib/drb/drb.rb, line 1060
1060: def __drbref
1061: @ref
1062: end
# File lib/drb/gw.rb, line 44
44: def _dump(lv)
45: if DRb.uri == @uri
46: if Array === @ref && @ref[0] == :DRbObject
47: Marshal.dump([@ref[1], @ref[2]])
48: else
49: Marshal.dump([@uri, @ref]) # ??
50: end
51: else
52: Marshal.dump([DRb.uri, [:DRbObject, @uri, @ref]])
53: end
54: end
Routes method calls to the referenced object.
# File lib/drb/drb.rb, line 1079
1079: def method_missing(msg_id, *a, &b)
1080: if DRb.here?(@uri)
1081: obj = DRb.to_obj(@ref)
1082: DRb.current_server.check_insecure_method(obj, msg_id)
1083: return obj.__send__(msg_id, *a, &b)
1084: end
1085:
1086: succ, result = self.class.with_friend(@uri) do
1087: DRbConn.open(@uri) do |conn|
1088: conn.send_message(self, msg_id, a, b)
1089: end
1090: end
1091:
1092: if succ
1093: return result
1094: elsif DRbUnknown === result
1095: raise result
1096: else
1097: bt = self.class.prepare_backtrace(@uri, result)
1098: result.set_backtrace(bt + caller)
1099: raise result
1100: end
1101: end