/usr/share/pyshared/gluon/debug.py is in python-gluon 2.12.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 | #!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
| This file is part of the web2py Web Framework
| Developed by Massimo Di Pierro <mdipierro@cs.depaul.edu>,
| limodou <limodou@gmail.com> and srackham <srackham@gmail.com>.
| License: LGPLv3 (http://www.gnu.org/licenses/lgpl.html)
Debugger support classes
------------------------
"""
import logging
import pdb
import Queue
import sys
logger = logging.getLogger("web2py")
class Pipe(Queue.Queue):
def __init__(self, name, mode='r', *args, **kwargs):
self.__name = name
Queue.Queue.__init__(self, *args, **kwargs)
def write(self, data):
logger.debug("debug %s writing %s" % (self.__name, data))
self.put(data)
def flush(self):
# mark checkpoint (complete message)
logger.debug("debug %s flushing..." % self.__name)
self.put(None)
# wait until it is processed
self.join()
logger.debug("debug %s flush done" % self.__name)
def read(self, count=None, timeout=None):
logger.debug("debug %s reading..." % (self.__name, ))
data = self.get(block=True, timeout=timeout)
# signal that we are ready
self.task_done()
logger.debug("debug %s read %s" % (self.__name, data))
return data
def readline(self):
logger.debug("debug %s readline..." % (self.__name, ))
return self.read()
pipe_in = Pipe('in')
pipe_out = Pipe('out')
debugger = pdb.Pdb(completekey=None, stdin=pipe_in, stdout=pipe_out,)
def set_trace():
"""breakpoint shortcut (like pdb)"""
logger.info("DEBUG: set_trace!")
debugger.set_trace(sys._getframe().f_back)
def stop_trace():
"""stop waiting for the debugger (called atexit)"""
# this should prevent communicate is wait forever a command result
# and the main thread has finished
logger.info("DEBUG: stop_trace!")
pipe_out.write("debug finished!")
pipe_out.write(None)
#pipe_out.flush()
def communicate(command=None):
"""send command to debbuger, wait result"""
if command is not None:
logger.info("DEBUG: sending command %s" % command)
pipe_in.write(command)
#pipe_in.flush()
result = []
while True:
data = pipe_out.read()
if data is None:
break
result.append(data)
logger.info("DEBUG: result %s" % repr(result))
return ''.join(result)
# New debugger implementation using qdb and a web UI
import gluon.contrib.qdb as qdb
from threading import RLock
interact_lock = RLock()
run_lock = RLock()
def check_interaction(fn):
"""Decorator to clean and prevent interaction when not available"""
def check_fn(self, *args, **kwargs):
interact_lock.acquire()
try:
if self.filename:
self.clear_interaction()
return fn(self, *args, **kwargs)
finally:
interact_lock.release()
return check_fn
class WebDebugger(qdb.Frontend):
"""Qdb web2py interface"""
def __init__(self, pipe, completekey='tab', stdin=None, stdout=None):
qdb.Frontend.__init__(self, pipe)
self.clear_interaction()
def clear_interaction(self):
self.filename = None
self.lineno = None
self.exception_info = None
self.context = None
# redefine Frontend methods:
def run(self):
run_lock.acquire()
try:
while self.pipe.poll():
qdb.Frontend.run(self)
finally:
run_lock.release()
def interaction(self, filename, lineno, line, **context):
# store current status
interact_lock.acquire()
try:
self.filename = filename
self.lineno = lineno
self.context = context
finally:
interact_lock.release()
def exception(self, title, extype, exvalue, trace, request):
self.exception_info = {'title': title,
'extype': extype, 'exvalue': exvalue,
'trace': trace, 'request': request}
@check_interaction
def do_continue(self):
qdb.Frontend.do_continue(self)
@check_interaction
def do_step(self):
qdb.Frontend.do_step(self)
@check_interaction
def do_return(self):
qdb.Frontend.do_return(self)
@check_interaction
def do_next(self):
qdb.Frontend.do_next(self)
@check_interaction
def do_quit(self):
qdb.Frontend.do_quit(self)
def do_exec(self, statement):
interact_lock.acquire()
try:
# check to see if we're inside interaction
if self.filename:
# avoid spurious interaction notifications:
self.set_burst(2)
# execute the statement in the remote debugger:
return qdb.Frontend.do_exec(self, statement)
finally:
interact_lock.release()
# create the connection between threads:
parent_queue, child_queue = Queue.Queue(), Queue.Queue()
front_conn = qdb.QueuePipe("parent", parent_queue, child_queue)
child_conn = qdb.QueuePipe("child", child_queue, parent_queue)
web_debugger = WebDebugger(front_conn) # frontend
qdb_debugger = qdb.Qdb(pipe=child_conn, redirect_stdio=False, skip=None) # backend
dbg = qdb_debugger
# enable getting context (stack, globals/locals) at interaction
qdb_debugger.set_params(dict(call_stack=True, environment=True))
import gluon.main
gluon.main.global_settings.debugging = True
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