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# Copyright 2011-2013 Amazon.com, Inc. or its affiliates. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"). You
# may not use this file except in compliance with the License. A copy of
# the License is located at
#
# http://aws.amazon.com/apache2.0/
#
# or in the "license" file accompanying this file. This file 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.
module AWS
module Core
module Http
# @api private
class Handler
attr_reader :base
def initialize(base, &block)
@base = base
if base.respond_to?(:handle)
unless [2,3].include?(block.arity)
raise ArgumentError, 'passed block must accept 2 or 3 arguments'
end
MetaUtils.extend_method(self, :handle, &block)
if block.arity == 3
m = Module.new do
eval(<<-DEF)
def handle req, resp, &read_block
super(req, resp, read_block)
end
DEF
end
self.extend(m)
end
elsif base.respond_to?(:handle_async)
unless block.arity == 3
raise ArgumentError, 'passed block must accept 3 arguments'
end
MetaUtils.extend_method(self, :handle_async) do |req, resp, handle|
@base.handle_async(req, resp, handle)
end
MetaUtils.extend(self) do
define_method(:handle) do |req, resp|
raise "attempted to call #handle on an async handler"
end
define_method(:handle_async, &block)
end
else
raise ArgumentError, 'base must respond to #handle or #handle_async'
end
end
def handle(request, http_response, &read_block)
@base.handle(request, http_response, &read_block)
end
def handle_async(request, http_response, handle)
Thread.new do
begin
self.handle(request, http_response)
rescue => e
handle.signal_failure
else
handle.signal_success
end
end
end
def sleep_with_callback seconds, &block
Kernel.sleep(seconds)
yield
end
end
end
end
end
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