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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.
#++
class Selectable
attr_reader :transport
def initialize(transport, socket)
@transport = transport
@socket = socket
@socket.autoclose = true
@write_done = false
@read_done = false
end
def closed?
return true if @socket.closed?
return false if !@read_done && !@write_done
@socket.close
true
end
def fileno
@socket.fileno unless @socket.closed?
end
def to_io
@socket
end
def reading?
return false if @read_done
c = @transport.capacity
if c > 0
return true
elsif c < 0
@read_done = true
return false
else
return false
end
end
def writing?
return false if @write_done
begin
p = @transport.pending
if p > 0
return true
elsif p < 0
@write_done = true
return false
else
return false
end
rescue Qpid::Proton::TransportError => error
@write_done = true
return false
end
end
def readable
c = @transport.capacity
if c > 0
begin
data = @socket.recv(c)
if data
@transport.push(data)
else
@transport.close_tail
end
rescue Exception => error
puts "read error; #{error}"
@transport.close_tail
@read_done = true
end
elsif c < 0
@read_done = true
end
end
def writable
begin
p = @transport.pending
if p > 0
data = @transport.peek(p)
n = @socket.send(data, 0)
@transport.pop(n)
elsif p < 0
@write_done = true
end
rescue Exception => error
puts "write error: #{error}"
puts error.backtrace.join("\n")
@transport.close_head
@write_done = true
end
end
def tick(now)
@transport.tick(now)
end
end
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