1 # Copyright (C) 2008-2010 Fabrizio Benedetti
2 # Massimo Sandal <devicerandom@gmail.com>
3 # Rolf Schmidt <rschmidt@alcor.concordia.ca>
4 # W. Trevor King <wking@drexel.edu>
6 # This file is part of Hooke.
8 # Hooke is free software: you can redistribute it and/or modify it
9 # under the terms of the GNU Lesser General Public License as
10 # published by the Free Software Foundation, either version 3 of the
11 # License, or (at your option) any later version.
13 # Hooke is distributed in the hope that it will be useful, but WITHOUT
14 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 # or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
16 # Public License for more details.
18 # You should have received a copy of the GNU Lesser General Public
19 # License along with Hooke. If not, see
20 # <http://www.gnu.org/licenses/>.
22 """Hooke - A force spectroscopy review & analysis tool.
25 if False: # Queue pickle error debugging code
26 """The Hooke class is passed back from the CommandEngine process
27 to the main process via a :class:`multiprocessing.queues.Queue`,
28 which uses :mod:`pickle` for serialization. There are a number of
29 objects that are unpicklable, and the error messages are not
30 always helpful. This block of code hooks you into the Queue's
31 _feed method so you can print out useful tidbits to help find the
32 particular object that is gumming up the pickle works.
34 import multiprocessing.queues
36 feed = multiprocessing.queues.Queue._feed
37 def new_feed (buffer, notempty, send, writelock, close):
39 print 'SEND:', obj, dir(obj)
41 attr = getattr(obj, a)
42 #print ' ', a, attr, type(attr)
43 if obj.__class__.__name__ == 'Hooke':
44 # Set suspect attributes to None until you resolve the
45 # PicklingError. Then fix whatever is breaking the
54 feed(buffer, notempty, s, writelock, close)
55 multiprocessing.queues.Queue._feed = staticmethod(new_feed)
59 import multiprocessing
67 from . import engine as engine
68 from . import config as config_mod
69 from . import playlist as playlist
70 from . import plugin as plugin_mod
71 from . import driver as driver_mod
72 from . import ui as ui
76 def __init__(self, config=None, debug=0):
78 default_settings = (config_mod.DEFAULT_SETTINGS
79 + plugin_mod.default_settings()
80 + driver_mod.default_settings()
81 + ui.default_settings())
83 config = config_mod.HookeConfigParser(
84 paths=config_mod.DEFAULT_PATHS,
85 default_settings=default_settings)
92 self.command = engine.CommandEngine()
93 self.playlists = playlist.NoteIndexList()
96 config_file = StringIO.StringIO()
97 self.config.write(config_file)
98 logging.config.fileConfig(StringIO.StringIO(config_file.getvalue()))
99 # Don't attach the logger because it contains an unpicklable
100 # thread.lock. Instead, grab it directly every time you need it.
101 #self.log = logging.getLogger('hooke')
103 def load_plugins(self):
104 self.plugins = plugin_mod.load_graph(
105 plugin_mod.PLUGIN_GRAPH, self.config, include_section='plugins')
107 for plugin in self.plugins:
108 self.commands.extend(plugin.commands())
110 def load_drivers(self):
111 self.drivers = plugin_mod.load_graph(
112 driver_mod.DRIVER_GRAPH, self.config, include_section='drivers')
115 self.ui = ui.load_ui(self.config)
118 self.config.write() # Does not preserve original comments
120 class HookeRunner (object):
121 def run(self, hooke):
122 """Run Hooke's main execution loop.
124 Spawns a :class:`hooke.engine.CommandEngine` subprocess and
125 then runs the UI, rejoining the `CommandEngine` process after
128 ui_to_command,command_to_ui,command = self._setup_run(hooke)
130 hooke.ui.run(hooke.commands, ui_to_command, command_to_ui)
132 hooke = self._cleanup_run(ui_to_command, command_to_ui, command)
135 def run_lines(self, hooke, lines):
136 """Run the pre-set commands `lines` with the "command line" UI.
138 Allows for non-interactive sessions that are otherwise
139 equivalent to :meth:'.run'.
141 cmdline = ui.load_ui(hooke.config, 'command line')
142 ui_to_command,command_to_ui,command = self._setup_run(hooke)
145 hooke.commands, ui_to_command, command_to_ui, lines)
147 hooke = self._cleanup_run(ui_to_command, command_to_ui, command)
150 def _setup_run(self, hooke):
151 ui_to_command = multiprocessing.Queue()
152 command_to_ui = multiprocessing.Queue()
153 manager = multiprocessing.Manager()
154 command = multiprocessing.Process(name='command engine',
155 target=hooke.command.run, args=(hooke, ui_to_command, command_to_ui))
157 return (ui_to_command, command_to_ui, command)
159 def _cleanup_run(self, ui_to_command, command_to_ui, command):
160 log = logging.getLogger('hooke')
161 log.debug('cleanup sending CloseEngine')
162 ui_to_command.put(ui.CloseEngine())
164 while not isinstance(hooke, Hooke):
165 log.debug('cleanup waiting for Hooke instance from the engine.')
166 hooke = command_to_ui.get(block=True)
167 log.debug('cleanup got %s instance' % type(hooke))
173 p = optparse.OptionParser()
175 '-s', '--script', dest='script', metavar='FILE',
176 help='Script of command line Hooke commands to run.')
178 '-c', '--command', dest='commands', metavar='COMMAND',
179 action='append', default=[],
180 help='Add a command line Hooke command to run.')
181 options,arguments = p.parse_args()
182 if len(arguments) > 0:
183 print >> sys.stderr, 'More than 0 arguments to %s: %s' \
184 % (sys.argv[0], arguments)
185 p.print_help(sys.stderr)
188 hooke = Hooke(debug=__debug__)
189 runner = HookeRunner()
191 if options.script != None:
192 f = open(os.path.expanduser(options.script), 'r')
193 options.commands.extend(f.readlines())
195 if len(options.commands) > 0:
197 hooke = runner.run_lines(hooke, options.commands)
203 hooke = runner.run(hooke)