#!/usr/bin/env python
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import argparse
import locale
import logging
import os
import sys
from os import path, sep, getcwd, access, W_OK
from platform import system
import ast
from errbot.logs import root_logger
from errbot.plugin_wizard import new_plugin_wizard
from errbot.version import VERSION
log = logging.getLogger(__name__)
if locale.getpreferredencoding().lower() != 'utf-8':
log.warning('Starting errbot with a default system encoding other than \'utf-8\''
' might cause you a heap of troubles.'
' Your current encoding is set at \'%s\'' % locale.getpreferredencoding().lower())
# noinspection PyUnusedLocal
[docs]def debug(sig, frame):
"""Interrupt running process, and provide a python prompt for
interactive debugging."""
d = {'_frame': frame} # Allow access to frame object.
d.update(frame.f_globals) # Unless shadowed by global
d.update(frame.f_locals)
i = code.InteractiveConsole(d)
message = "Signal received : entering python shell.\nTraceback:\n"
message += ''.join(traceback.format_stack(frame))
i.interact(message)
ON_WINDOWS = system() == 'Windows'
if not ON_WINDOWS:
from daemonize import Daemonize
import code
import traceback
import signal
signal.signal(signal.SIGUSR1, debug) # Register handler for debugging
[docs]def get_config(config_path):
config_fullpath = config_path
if not path.exists(config_fullpath):
log.error(
'I cannot find the config file %s \n'
'(You can change this path with the -c parameter see --help)' % config_path
)
log.info(
'You can use the template %s as a base and copy it to %s. \nYou can then customize it.' % (
os.path.realpath(os.path.join(__file__, os.pardir, 'config-template.py')), config_path)
)
exit(-1)
try:
config = __import__(path.splitext(path.basename(config_fullpath))[0])
log.info('Config check passed...')
return config
except Exception:
log.exception('I could not import your config from %s, please check the error below...' % config_fullpath)
exit(-1)
def _read_dict():
import collections
new_dict = ast.literal_eval(sys.stdin.read())
if not isinstance(new_dict, collections.Mapping):
raise ValueError("A dictionary written in python is needed from stdin. Type=%s, Value = %s" % (type(new_dict),
repr(new_dict)))
return new_dict
[docs]def main():
execution_dir = getcwd()
# By default insert the execution path (useful to be able to execute Errbot from
# the source tree directly without installing it.
sys.path.insert(0, execution_dir)
parser = argparse.ArgumentParser(description='The main entry point of the errbot.')
parser.add_argument('-c', '--config', default=None,
help='Full path to your config.py (default: config.py in current working directory).')
mode_selection = parser.add_mutually_exclusive_group()
mode_selection.add_argument('-v', '--version', action='version', version='Errbot version {}'.format(VERSION))
mode_selection.add_argument('-r', '--restore', nargs='?', default=None, const='default',
help='restore a bot from backup.py (default: backup.py from the bot data directory)')
mode_selection.add_argument('-l', '--list', action='store_true', help='list all available backends')
mode_selection.add_argument('--new-plugin', nargs='?', default=None, const='current_dir',
help='create a new plugin in the specified directory')
mode_selection.add_argument('-i', '--init',
nargs='?',
default=None,
const='.',
help='Initialize a simple bot minimal configuration in the optionally '
'given directory (otherwise it will be the working directory). '
'This will create a data subdirectory for the bot data dir and a plugins directory'
' for your plugin development with an example in it to get you started.')
# storage manipulation
mode_selection.add_argument('--storage-set', nargs=1, help='DANGER: Delete the given storage namespace '
'and set the python dictionary expression '
'passed on stdin.')
mode_selection.add_argument('--storage-merge', nargs=1, help='DANGER: Merge in the python dictionary expression '
'passed on stdin into the given storage namespace.')
mode_selection.add_argument('--storage-get', nargs=1, help='Dump the given storage namespace in a '
'format compatible for --storage-set and '
'--storage-merge.')
mode_selection.add_argument('-T', '--text', dest="backend", action='store_const', const="Text",
help='force local text backend')
mode_selection.add_argument('-G', '--graphic', dest="backend", action='store_const', const="Graphic",
help='force local graphical backend')
if not ON_WINDOWS:
option_group = parser.add_argument_group('optional daemonization arguments')
option_group.add_argument('-d', '--daemon', action='store_true', help='Detach the process from the console')
option_group.add_argument('-p', '--pidfile', default=None,
help='Specify the pid file for the daemon (default: current bot data directory)')
args = vars(parser.parse_args()) # create a dictionary of args
if args['init']:
try:
import jinja2
import shutil
base_dir = os.getcwd() if args['init'] == '.' else args['init']
if not os.path.isdir(base_dir):
print('Target directory %s must exist. Please create it.' % base_dir)
base_dir = os.path.abspath(base_dir)
data_dir = os.path.join(base_dir, 'data')
extra_plugin_dir = os.path.join(base_dir, 'plugins')
example_plugin_dir = os.path.join(extra_plugin_dir, 'err-example')
log_path = os.path.join(base_dir, 'errbot.log')
templates_dir = os.path.join(os.path.dirname(__file__), 'templates', 'initdir')
env = jinja2.Environment(loader=jinja2.FileSystemLoader(templates_dir), autoescape=True)
config_template = env.get_template('config.py.tmpl')
os.mkdir(data_dir)
os.mkdir(extra_plugin_dir)
os.mkdir(example_plugin_dir)
with open(os.path.join(base_dir, 'config.py'), 'w') as f:
f.write(config_template.render(data_dir=data_dir,
extra_plugin_dir=extra_plugin_dir,
log_path=log_path))
shutil.copyfile(os.path.join(templates_dir, 'example.plug'),
os.path.join(example_plugin_dir, 'example.plug'))
shutil.copyfile(os.path.join(templates_dir, 'example.py'), os.path.join(example_plugin_dir, 'example.py'))
print('Your Errbot directory has been correctly initialized !')
if base_dir == os.getcwd():
print('Just do "errbot" and it should start in text/development mode.')
else:
print('Just do "cd %s" then "errbot" and it should start in text/development mode.' % args['init'])
sys.exit(0)
except Exception as e:
print('The initialization of your errbot directory failed: %s' % e)
sys.exit(1)
# This must come BEFORE the config is loaded below, to avoid printing
# logs as a side effect of config loading.
if args['new_plugin']:
directory = os.getcwd() if args['new_plugin'] == "current_dir" else args['new_plugin']
for handler in logging.getLogger().handlers:
root_logger.removeHandler(handler)
try:
new_plugin_wizard(directory)
except KeyboardInterrupt:
sys.exit(1)
except Exception as e:
sys.stderr.write(str(e) + "\n")
sys.exit(1)
finally:
sys.exit(0)
config_path = args['config']
# setup the environment to be able to import the config.py
if config_path:
# appends the current config in order to find config.py
sys.path.insert(0, path.dirname(path.abspath(config_path)))
else:
config_path = execution_dir + sep + 'config.py'
config = get_config(config_path) # will exit if load fails
if args['list']:
from errbot.bootstrap import enumerate_backends
print('Available backends:')
for backend_name in enumerate_backends(config):
print('\t\t%s' % backend_name)
sys.exit(0)
def storage_action(namespace, fn):
# Used to defer imports until it is really necessary during the loading time.
from errbot.bootstrap import get_storage_plugin
from errbot.storage import StoreMixin
try:
with StoreMixin() as sdm:
sdm.open_storage(get_storage_plugin(config), namespace)
fn(sdm)
return 0
except Exception as e:
print(str(e), file=sys.stderr)
return -3
if args['storage_get']:
def p(sdm):
print(repr(dict(sdm)))
err_value = storage_action(args['storage_get'][0], p)
sys.exit(err_value)
if args['storage_set']:
def replace(sdm):
new_dict = _read_dict() # fail early and don't erase the storage if the input is invalid.
sdm.clear()
sdm.update(new_dict)
err_value = storage_action(args['storage_set'][0], replace)
sys.exit(err_value)
if args['storage_merge']:
def merge(sdm):
new_dict = _read_dict()
sdm.update(new_dict)
err_value = storage_action(args['storage_merge'][0], merge)
sys.exit(err_value)
if args['restore']:
backend = 'Null' # we don't want any backend when we restore
elif args['backend'] is None:
if not hasattr(config, 'BACKEND'):
log.fatal("The BACKEND configuration option is missing in config.py")
sys.exit(1)
backend = config.BACKEND
else:
backend = args['backend']
log.info("Selected backend '%s'." % backend)
# Check if at least we can start to log something before trying to start
# the bot (esp. daemonize it).
log.info("Checking for '%s'..." % config.BOT_DATA_DIR)
if not path.exists(config.BOT_DATA_DIR):
raise Exception("The data directory '%s' for the bot does not exist" % config.BOT_DATA_DIR)
if not access(config.BOT_DATA_DIR, W_OK):
raise Exception("The data directory '%s' should be writable for the bot" % config.BOT_DATA_DIR)
if (not ON_WINDOWS) and args['daemon']:
if args['backend'] == "Text":
raise Exception('You cannot run in text and daemon mode at the same time')
if args['restore']:
raise Exception('You cannot restore a backup in daemon mode.')
if args['pidfile']:
pid = args['pidfile']
else:
pid = config.BOT_DATA_DIR + sep + 'err.pid'
# noinspection PyBroadException
try:
def action():
from errbot.bootstrap import bootstrap
bootstrap(backend, root_logger, config)
daemon = Daemonize(app="err", pid=pid, action=action, chdir=os.getcwd())
log.info("Daemonizing")
daemon.start()
except Exception:
log.exception('Failed to daemonize the process')
exit(0)
from errbot.bootstrap import bootstrap
restore = args['restore']
if restore == 'default': # restore with no argument, get the default location
restore = path.join(config.BOT_DATA_DIR, 'backup.py')
bootstrap(backend, root_logger, config, restore)
log.info('Process exiting')
if __name__ == "__main__":
main()
