blob: 82ebd27439c445f6d15cdf72b927233c11bbfcfc [file] [log] [blame]
#!/usr/bin/python
#
# 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.
#
from __future__ import print_function
import sys, os
from proton.reactor import Reactor
class Echo:
def __init__(self, source):
self.source = source
def on_selectable_init(self, event):
sel = event.context # XXX: no selectable property yet
# We can configure a selectable with any file descriptor we want.
sel.fileno(self.source.fileno())
# Ask to be notified when the file is readable.
sel.reading = True
event.reactor.update(sel)
def on_selectable_readable(self, event):
sel = event.context
# The on_selectable_readable event tells us that there is data
# to be read, or the end of stream has been reached.
data = os.read(sel.fileno(), 1024)
if data:
print(data, end=' ')
else:
sel.terminate()
event.reactor.update(sel)
class Program:
def on_reactor_init(self, event):
event.reactor.selectable(Echo(open(sys.argv[1])))
r = Reactor(Program())
r.run()