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#!/usr/bin/env python
# Copyright (C) 2012 Aleksey Lim
#
# 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, see <http://www.gnu.org/licenses/>.
import os
import sys
import errno
import signal
import locale
import logging
from os.path import join, abspath, exists
import active_document as ad
import sugar_network_webui as webui
from sugar_network import toolkit, local, node
from sugar_network.toolkit import sugar, sneakernet
from sugar_network.toolkit import dbus_thread, mounts_monitor
from sugar_network.local import activities, datastore
from sugar_network.local.dbus_datastore import Datastore
from sugar_network.local.dbus_network import Network
from sugar_network.local.mounts import HomeMount, RemoteMount
from sugar_network.local.mountset import Mountset
from sugar_network.local.ipc_client import Router
from sugar_network.node import stats
from sugar_network.resources.volume import Volume
from active_toolkit.options import Option
from active_toolkit import util, printf, application, coroutine, enforce
VERSION = '0.4'
class NullHandler(logging.Handler):
def emit(self, record):
pass
class Application(application.Application):
_ipc_server = None
def __init__(self, **kwargs):
application.Application.__init__(self, **kwargs)
if application.debug.value < 3:
for log_name in (
'requests.packages.urllib3.connectionpool',
'requests.packages.urllib3.poolmanager',
'requests.packages.urllib3.response',
'requests.packages.urllib3',
'inotify',
'netlink',
'sneakernet',
'toolkit',
):
logger = logging.getLogger(log_name)
logger.propagate = False
logger.addHandler(NullHandler())
new_root = (local.local_root.value != local.local_root.default)
local.local_root.value = abspath(local.local_root.value)
if new_root:
application.logdir.value = join(local.local_root.value, 'log')
else:
application.logdir.value = sugar.profile_path('logs')
application.rundir.value = join(local.local_root.value, 'run')
if not exists(toolkit.tmpdir.value):
os.makedirs(toolkit.tmpdir.value)
coroutine.signal(signal.SIGCHLD, self.__SIGCHLD_cb)
@application.command(
'index local Sugar Network database')
def index(self):
if self.check_for_instance():
printf.info('%s already started, no need in index', self.name)
return
if not exists(sugar.profile_path('owner.key')):
# Command was launched in foreign environment
sugar.uid = lambda: 'index'
sugar.nickname = lambda: 'index'
printf.info('Index database in %r', local.local_root.value)
volume = Volume(local.db_path())
try:
volume.populate()
datastore.populate(volume['artifact'])
self._sync(volume)
activities.populate(volume['context'], local.activity_dirs.value)
finally:
volume.close()
@application.command(
'start service and log to standard output')
def debug(self):
self.start_service()
@application.command(
'start service and log to files',
name='start', keep_stdout=True)
def start_service(self):
if self.check_for_instance():
printf.info('%s is already run', self.name)
exit(1)
jobs = coroutine.Pool()
toolkit.ensure_dsa_pubkey(sugar.profile_path('owner.key'))
volume = Volume(local.db_path(), lazy_open=local.lazy_open.value)
mountset = Mountset(volume)
mountset['~'] = HomeMount(volume)
mountset['/'] = RemoteMount(volume)
def delayed_start(event=None):
logging.info('Proceed delayed start')
mountset.disconnect(delayed_start)
self._sync(mountset.volume)
logging.info('Listening for IPC requests on %s port',
local.ipc_port.value)
server = coroutine.WSGIServer(('localhost', local.ipc_port.value),
Router(mountset))
jobs.spawn(server.serve_forever)
jobs.spawn(activities.monitor, mountset.volume['context'],
local.activity_dirs.value)
if webui.webui.value:
host = (webui.webui_host.value, webui.webui_port.value)
logging.info('Start Web server on %s:%s', *host)
server = coroutine.WSGIServer(host, webui.get_app(mountset))
jobs.spawn(server.serve_forever)
if local.mounts_root.value:
mounts_monitor.start(abspath(local.mounts_root.value))
if local.delayed_start.value:
mountset.connect(delayed_start, event='delayed-start')
else:
delayed_start()
dbus_thread.spawn_service(Datastore)
dbus_thread.spawn_service(Network)
pid_path = self.new_instance()
try:
mountset.open()
dbus_thread.start(mountset)
except KeyboardInterrupt:
util.exception('%s interrupted', self.name)
except Exception:
util.exception('%s aborted', self.name)
finally:
mounts_monitor.stop()
jobs.kill()
mountset.close()
os.unlink(pid_path)
def __SIGCHLD_cb(self):
while True:
try:
pid, __ = os.waitpid(-1, os.WNOHANG)
if pid:
continue
except OSError, error:
if error.errno != errno.ECHILD:
raise
break
def _sync(self, volume):
contexts = volume['context']
docs, __ = contexts.find(limit=ad.MAX_LIMIT, keep_impl=[1, 2])
for context in docs:
if not activities.ensure_checkins(context.guid):
contexts.update(context.guid, keep_impl=0)
locale.setlocale(locale.LC_ALL, '')
# New defaults
application.debug.value = sugar.logger_level()
# It seems to be that most of users (on XO at least) don't have recent SSH
node.trust_users.value = True
# If tmpfs is mounted to /tmp, `os.fstat()` will return 0 free space
# and will brake offline synchronization logic
toolkit.tmpdir.value = sugar.profile_path('tmp')
Option.seek('main', [application.debug])
Option.seek('webui', webui)
Option.seek('local', local)
Option.seek('local', [sugar.keyfile, toolkit.tmpdir])
Option.seek('node', [node.port, node.sync_dirs])
Option.seek('stats', stats)
Option.seek('active-document', ad)
app = Application(
name='sugar-network',
description='Sugar Network service.',
epilog='See http://wiki.sugarlabs.org/go/Sugar_Network ' \
'for details.',
version=VERSION,
config_files=[
'/etc/sweets.conf',
'~/.config/sweets/config',
sugar.profile_path('sweets.conf'),
])
app.start()
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