69 lines
1.4 KiB
Ruby
69 lines
1.4 KiB
Ruby
require 'mongo/util/bson'
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require 'mongo/util/byte_buffer'
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module XGen
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module Mongo
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module Driver
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class Message
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HEADER_SIZE = 16 # size, id, response_to, opcode
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@@class_req_id = 0
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attr_reader :buf # for testing
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def initialize(op)
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@op = op
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@message_length = HEADER_SIZE
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@data_length = 0
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@request_id = (@@class_req_id += 1)
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@response_id = 0
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@buf = ByteBuffer.new
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@buf.put_int(16) # holder for length
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@buf.put_int(@@class_req_id += 1)
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@buf.put_int(0) # response_to
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@buf.put_int(op)
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end
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def write_int(i)
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@buf.put_int(i)
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update_message_length
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end
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def write_long(i)
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@buf.put_long(i)
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update_message_length
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end
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def write_string(s)
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BSON.serialize_cstr(@buf, s)
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update_message_length
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end
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def write_doc(hash)
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@buf.put_array(BSON.new.serialize(hash).to_a)
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update_message_length
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end
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def to_a
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@buf.to_a
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end
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def dump
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@buf.dump
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end
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# Do not call. Private, but kept public for testing.
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def update_message_length
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pos = @buf.position
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@buf.put_int(@buf.size, 0)
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@buf.position = pos
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end
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end
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end
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end
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end
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