#
# This file is part of Hooke.
#
-# Hooke is free software: you can redistribute it and/or
-# modify it under the terms of the GNU Lesser General Public
-# License as published by the Free Software Foundation, either
-# version 3 of the License, or (at your option) any later version.
+# Hooke is free software: you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
#
-# Hooke is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU Lesser General Public License for more details.
+# Hooke is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
+# Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with Hooke. If not, see
"""Hooke - A force spectroscopy review & analysis tool.
"""
+if False: # Queue pickle error debugging code
+ """The Hooke class is passed back from the CommandEngine process
+ to the main process via a :class:`multiprocessing.queues.Queue`,
+ which uses :mod:`pickle` for serialization. There are a number of
+ objects that are unpicklable, and the error messages are not
+ always helpful. This block of code hooks you into the Queue's
+ _feed method so you can print out useful tidbits to help find the
+ particular object that is gumming up the pickle works.
+ """
+ import multiprocessing.queues
+ import sys
+ feed = multiprocessing.queues.Queue._feed
+ def new_feed (buffer, notempty, send, writelock, close):
+ def s(obj):
+ print 'SEND:', obj, dir(obj)
+ for a in dir(obj):
+ attr = getattr(obj, a)
+ #print ' ', a, attr, type(attr)
+ if obj.__class__.__name__ == 'Hooke':
+ # Set suspect attributes to None until you resolve the
+ # PicklingError. Then fix whatever is breaking the
+ # pickling.
+ #obj.commands = None
+ #obj.drivers = None
+ #obj.plugins = None
+ #obj.ui = None
+ pass
+ sys.stdout.flush()
+ send(obj)
+ feed(buffer, notempty, s, writelock, close)
+ multiprocessing.queues.Queue._feed = staticmethod(new_feed)
+
+import logging
+import logging.config
import multiprocessing
import optparse
import os.path
+import Queue
import unittest
+import StringIO
import sys
-from . import engine as engine
+from . import version
+from . import engine
from . import config as config_mod
-from . import playlist as playlist
+from . import playlist
from . import plugin as plugin_mod
from . import driver as driver_mod
-from . import ui as ui
+from . import ui
class Hooke (object):
default_settings=default_settings)
config.read()
self.config = config
+ self.load_log()
self.load_plugins()
self.load_drivers()
self.load_ui()
self.command = engine.CommandEngine()
-
self.playlists = playlist.NoteIndexList()
+ def load_log(self):
+ config_file = StringIO.StringIO()
+ self.config.write(config_file)
+ logging.config.fileConfig(StringIO.StringIO(config_file.getvalue()))
+ # Don't attach the logger because it contains an unpicklable
+ # thread.lock. Instead, grab it directly every time you need it.
+ #self.log = logging.getLogger('hooke')
+
def load_plugins(self):
self.plugins = plugin_mod.load_graph(
plugin_mod.PLUGIN_GRAPH, self.config, include_section='plugins')
def close(self):
self.config.write() # Does not preserve original comments
- def run(self):
+class HookeRunner (object):
+ def run(self, hooke):
"""Run Hooke's main execution loop.
Spawns a :class:`hooke.engine.CommandEngine` subprocess and
then runs the UI, rejoining the `CommandEngine` process after
the UI exits.
"""
- ui_to_command,command_to_ui,command = self._setup_run()
+ ui_to_command,command_to_ui,command = self._setup_run(hooke)
try:
- self.ui.run(self.commands, ui_to_command, command_to_ui)
+ hooke.ui.run(hooke.commands, ui_to_command, command_to_ui)
finally:
- self._cleanup_command(ui_to_command, command_to_ui, command)
+ hooke = self._cleanup_run(ui_to_command, command_to_ui, command)
+ return hooke
- def run_lines(self, lines):
+ def run_lines(self, hooke, lines):
"""Run the pre-set commands `lines` with the "command line" UI.
Allows for non-interactive sessions that are otherwise
equivalent to :meth:'.run'.
"""
- cmdline = ui.load_ui(self.config, 'command line')
- ui_to_command,command_to_ui,command = self._setup_run()
+ cmdline = ui.load_ui(hooke.config, 'command line')
+ ui_to_command,command_to_ui,command = self._setup_run(hooke)
try:
cmdline.run_lines(
- self.commands, ui_to_command, command_to_ui, lines)
+ hooke.commands, ui_to_command, command_to_ui, lines)
finally:
- self._cleanup_command(ui_to_command, command_to_ui, command)
+ hooke = self._cleanup_run(ui_to_command, command_to_ui, command)
+ return hooke
- def _setup_run(self):
+ def _setup_run(self, hooke):
ui_to_command = multiprocessing.Queue()
command_to_ui = multiprocessing.Queue()
+ manager = multiprocessing.Manager()
command = multiprocessing.Process(name='command engine',
- target=self.command.run, args=(self, ui_to_command, command_to_ui))
+ target=hooke.command.run, args=(hooke, ui_to_command, command_to_ui))
command.start()
return (ui_to_command, command_to_ui, command)
def _cleanup_run(self, ui_to_command, command_to_ui, command):
+ log = logging.getLogger('hooke')
+ log.debug('cleanup sending CloseEngine')
ui_to_command.put(ui.CloseEngine())
+ hooke = None
+ while not isinstance(hooke, Hooke):
+ log.debug('cleanup waiting for Hooke instance from the engine.')
+ hooke = command_to_ui.get(block=True)
+ log.debug('cleanup got %s instance' % type(hooke))
command.join()
+ return hooke
def main():
p = optparse.OptionParser()
+ p.add_option(
+ '--version', dest='version', default=False, action='store_true',
+ help="Print Hooke's version information and exit.")
p.add_option(
'-s', '--script', dest='script', metavar='FILE',
help='Script of command line Hooke commands to run.')
'-c', '--command', dest='commands', metavar='COMMAND',
action='append', default=[],
help='Add a command line Hooke command to run.')
+ p.add_option(
+ '--command-no-exit', dest='command_exit',
+ action='store_false', default=True,
+ help="Don't exit after running a script or commands.")
options,arguments = p.parse_args()
if len(arguments) > 0:
- print >> sys.stderr, 'Too many arguments to %s: %d > 0' \
- % (sys.argv[0], len(arguments))
- print >> sys.stderr, p.help()
+ print >> sys.stderr, 'More than 0 arguments to %s: %s' \
+ % (sys.argv[0], arguments)
+ p.print_help(sys.stderr)
sys.exit(1)
- app = Hooke(debug=__debug__)
+ hooke = Hooke(debug=__debug__)
+ runner = HookeRunner()
+ if options.version == True:
+ print version()
+ sys.exit(0)
if options.script != None:
- f = open(os.path.expanduser(options.script), 'r')
- options.commands.extend(f.readlines())
- f.close
+ with open(os.path.expanduser(options.script), 'r') as f:
+ options.commands.extend(f.readlines())
if len(options.commands) > 0:
- app.run_lines(options.commands)
- sys.exit(0)
+ try:
+ hooke = runner.run_lines(hooke, options.commands)
+ finally:
+ if options.command_exit == True:
+ hooke.close()
+ sys.exit(0)
try:
- app.run()
+ hooke = runner.run(hooke)
finally:
- app.close()
-
-if __name__ == '__main__':
- main()
+ hooke.close()