59 lines
2.0 KiB
Python
59 lines
2.0 KiB
Python
# Copyright 2014-2015 Canonical Limited.
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#
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# This file is part of charm-helpers.
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#
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# charm-helpers is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License version 3 as
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# published by the Free Software Foundation.
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#
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# charm-helpers is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
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"""Remote Python Debugger (pdb wrapper)."""
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import pdb
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import socket
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import sys
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__author__ = "Bertrand Janin <b@janin.com>"
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__version__ = "0.1.3"
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class Rpdb(pdb.Pdb):
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def __init__(self, addr="127.0.0.1", port=4444):
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"""Initialize the socket and initialize pdb."""
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# Backup stdin and stdout before replacing them by the socket handle
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self.old_stdout = sys.stdout
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self.old_stdin = sys.stdin
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# Open a 'reusable' socket to let the webapp reload on the same port
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self.skt = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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self.skt.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, True)
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self.skt.bind((addr, port))
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self.skt.listen(1)
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(clientsocket, address) = self.skt.accept()
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handle = clientsocket.makefile('rw')
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pdb.Pdb.__init__(self, completekey='tab', stdin=handle, stdout=handle)
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sys.stdout = sys.stdin = handle
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def shutdown(self):
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"""Revert stdin and stdout, close the socket."""
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sys.stdout = self.old_stdout
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sys.stdin = self.old_stdin
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self.skt.close()
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self.set_continue()
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def do_continue(self, arg):
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"""Stop all operation on ``continue``."""
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self.shutdown()
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return 1
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do_EOF = do_quit = do_exit = do_c = do_cont = do_continue
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