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#!/usr/bin/env python
# Copyright (C) 2012-2013 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 locale
import logging
from os.path import exists, join
from gevent import monkey
import sugar_network_webui as webui
from sugar_network import db, node, client, toolkit
from sugar_network.node import stats_node, stats_user, obs
from sugar_network.node.master import MasterRoutes
from sugar_network.node.slave import SlaveRoutes
from sugar_network.model import RESOURCES
from sugar_network.toolkit.http import Connection
from sugar_network.toolkit.router import Router, Request, Response
from sugar_network.toolkit import coroutine, application, Option, enforce
class Application(application.Daemon):
jobs = coroutine.Pool()
node = None
def ensure_run(self):
if toolkit.cachedir.value and not exists(toolkit.cachedir.value):
os.makedirs(toolkit.cachedir.value)
if not exists(node.data_root.value):
os.makedirs(node.data_root.value)
enforce(os.access(node.data_root.value, os.W_OK),
'No write access to %r directory', node.data_root.value)
def run(self):
ssl_args = {}
if node.keyfile.value:
ssl_args['keyfile'] = node.keyfile.value
if node.certfile.value:
ssl_args['certfile'] = node.certfile.value
volume = db.Volume(node.data_root.value, RESOURCES)
self.jobs.spawn(volume.populate)
master_path = join(node.data_root.value, 'master')
if exists(master_path):
with file(master_path) as f:
guid = f.read().strip()
logging.info('Start %s node in master mode', guid)
cp = MasterRoutes(guid, volume)
else:
logging.info('Start slave node')
cp = SlaveRoutes(join(node.data_root.value, 'node.key'), volume)
logging.info('Listening for requests on %s:%s',
node.host.value, node.port.value)
server = coroutine.WSGIServer((node.host.value, node.port.value),
Router(cp), **ssl_args)
self.jobs.spawn(server.serve_forever)
self.accept()
if webui.webui.value:
# XXX Until implementing regular web users
from sugar_network.client.routes import ClientRoutes
client.login.value = 'demo'
# Point client API to volume directly
client.mounts_root.value = None
home = db.Volume(join(application.rundir.value, 'db'), RESOURCES)
client_routes = ClientRoutes(home,
api_url='http://localhost:%s' % node.port.value)
client_app = Router(client_routes)
host = (node.host.value, webui.webui_port.value)
logging.info('Start Web server on %s:%s port', *host)
server = coroutine.WSGIServer(host,
webui.get_app(
lambda **kwargs: client_app.call(Request(**kwargs),
Response()),
client.api_url.value, True))
self.jobs.spawn(server.serve_forever)
try:
self.jobs.join()
finally:
cp.close()
volume.close()
def shutdown(self):
self.jobs.kill()
@application.command(
'direct synchronization with master node',
name='online-sync')
def online_sync(self):
self._ensure_instance().post(cmd='online-sync')
@application.command(
'sneakernet synchronization with other nodes using files '
'placed to the specified directory',
args='PATH', name='offline-sync')
def offline_sync(self):
enforce(self.args, 'PATH was not specified')
path = self.args.pop(0)
self._ensure_instance().post(cmd='offline-sync', path=path)
def _ensure_instance(self):
enforce(self.check_for_instance(), 'Node is not started')
return Connection('http://localhost:%s' %
node.port.value, trust_env=False)
# Let toolkit.http work in concurrence
monkey.patch_socket()
monkey.patch_select()
monkey.patch_ssl()
monkey.patch_time()
locale.setlocale(locale.LC_ALL, '')
Option.seek('main', application)
Option.seek('main', [toolkit.cachedir])
Option.seek('webui', webui)
Option.seek('client', [client.api_url])
Option.seek('node', node)
Option.seek('node-stats', stats_node)
Option.seek('user-stats', stats_user)
Option.seek('obs', obs)
Option.seek('db', db)
app = Application(
name='sugar-network-node',
description='Sugar Network node server',
epilog='See http://wiki.sugarlabs.org/go/Sugar_Network '
'for details.',
config_files=[
'/etc/sugar-network.d',
'/etc/sugar-network.conf',
'~/.config/sugar-network/config',
])
app.start()
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