charm-glance/charmhelpers/fetch/python/rpdb.py
David Ames 211ac1ec6e Update charm-helpers-hooks.yaml and sync ch
Using the new version of the sync tool which removes the charmhelpers
directory before syncing, run charm helpers sync to find any unexpected
missing dependencies.

Change-Id: I8feaef641fc9c22ed47529ce91b011db5694a6f7
2019-02-12 15:56:37 -08:00

57 lines
1.9 KiB
Python

# Copyright 2014-2015 Canonical Limited.
#
# Licensed 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.
"""Remote Python Debugger (pdb wrapper)."""
import pdb
import socket
import sys
__author__ = "Bertrand Janin <b@janin.com>"
__version__ = "0.1.3"
class Rpdb(pdb.Pdb):
def __init__(self, addr="127.0.0.1", port=4444):
"""Initialize the socket and initialize pdb."""
# Backup stdin and stdout before replacing them by the socket handle
self.old_stdout = sys.stdout
self.old_stdin = sys.stdin
# Open a 'reusable' socket to let the webapp reload on the same port
self.skt = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.skt.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, True)
self.skt.bind((addr, port))
self.skt.listen(1)
(clientsocket, address) = self.skt.accept()
handle = clientsocket.makefile('rw')
pdb.Pdb.__init__(self, completekey='tab', stdin=handle, stdout=handle)
sys.stdout = sys.stdin = handle
def shutdown(self):
"""Revert stdin and stdout, close the socket."""
sys.stdout = self.old_stdout
sys.stdin = self.old_stdin
self.skt.close()
self.set_continue()
def do_continue(self, arg):
"""Stop all operation on ``continue``."""
self.shutdown()
return 1
do_EOF = do_quit = do_exit = do_c = do_cont = do_continue