/
base_protocol.rb
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/
base_protocol.rb
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#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
#
# this require is to make generated struct definitions happy
require 'set'
module Thrift
class ProtocolException < Exception
UNKNOWN = 0
INVALID_DATA = 1
NEGATIVE_SIZE = 2
SIZE_LIMIT = 3
BAD_VERSION = 4
attr_reader :type
def initialize(type=UNKNOWN, message=nil)
super(message)
@type = type
end
end
class BaseProtocol
attr_reader :trans
def initialize(trans)
@trans = trans
end
def native?
puts "wrong method is being called!"
false
end
def write_message_begin(name, type, seqid)
raise NotImplementedError
end
def write_message_end; nil; end
def write_struct_begin(name)
raise NotImplementedError
end
def write_struct_end; nil; end
def write_field_begin(name, type, id)
raise NotImplementedError
end
def write_field_end; nil; end
def write_field_stop
raise NotImplementedError
end
def write_map_begin(ktype, vtype, size)
raise NotImplementedError
end
def write_map_end; nil; end
def write_list_begin(etype, size)
raise NotImplementedError
end
def write_list_end; nil; end
def write_set_begin(etype, size)
raise NotImplementedError
end
def write_set_end; nil; end
def write_bool(bool)
raise NotImplementedError
end
def write_byte(byte)
raise NotImplementedError
end
def write_i16(i16)
raise NotImplementedError
end
def write_i32(i32)
raise NotImplementedError
end
def write_i64(i64)
raise NotImplementedError
end
def write_double(dub)
raise NotImplementedError
end
# Writes a Thrift String. In Ruby 1.9+, the String passed will be transcoded to UTF-8.
#
# str - The String to write.
#
# Raises EncodingError if the transcoding to UTF-8 fails.
#
# Returns nothing.
def write_string(str)
raise NotImplementedError
end
def read_message_begin
raise NotImplementedError
end
def read_message_end; nil; end
def read_struct_begin
raise NotImplementedError
end
def read_struct_end; nil; end
def read_field_begin
raise NotImplementedError
end
def read_field_end; nil; end
def read_map_begin
raise NotImplementedError
end
def read_map_end; nil; end
def read_list_begin
raise NotImplementedError
end
def read_list_end; nil; end
def read_set_begin
raise NotImplementedError
end
def read_set_end; nil; end
def read_bool
raise NotImplementedError
end
def read_byte
raise NotImplementedError
end
def read_i16
raise NotImplementedError
end
def read_i32
raise NotImplementedError
end
def read_i64
raise NotImplementedError
end
def read_double
raise NotImplementedError
end
# Reads a Thrift String. In Ruby 1.9+, all String will be returned with an Encoding of UTF-8.
#
# Returns a String.
def read_string
raise NotImplementedError
end
def write_field(name, type, fid, value)
write_field_begin(name, type, fid)
write_type(type, value)
write_field_end
end
def write_type(type, value)
case type
when Types::BOOL
write_bool(value)
when Types::BYTE
write_byte(value)
when Types::DOUBLE
write_double(value)
when Types::I16
write_i16(value)
when Types::I32
write_i32(value)
when Types::I64
write_i64(value)
when Types::STRING
write_string(value)
when Types::STRUCT
value.write(self)
else
raise NotImplementedError
end
end
def read_type(type)
case type
when Types::BOOL
read_bool
when Types::BYTE
read_byte
when Types::DOUBLE
read_double
when Types::I16
read_i16
when Types::I32
read_i32
when Types::I64
read_i64
when Types::STRING
read_string
else
raise NotImplementedError
end
end
def skip(type)
case type
when Types::STOP
nil
when Types::BOOL
read_bool
when Types::BYTE
read_byte
when Types::I16
read_i16
when Types::I32
read_i32
when Types::I64
read_i64
when Types::DOUBLE
read_double
when Types::STRING
read_string
when Types::STRUCT
read_struct_begin
while true
name, type, id = read_field_begin
break if type == Types::STOP
skip(type)
read_field_end
end
read_struct_end
when Types::MAP
ktype, vtype, size = read_map_begin
size.times do
skip(ktype)
skip(vtype)
end
read_map_end
when Types::SET
etype, size = read_set_begin
size.times do
skip(etype)
end
read_set_end
when Types::LIST
etype, size = read_list_begin
size.times do
skip(etype)
end
read_list_end
end
end
end
class BaseProtocolFactory
def get_protocol(trans)
raise NotImplementedError
end
end
end