/usr/share/pyshared/oneconf/networksync/__init__.py is in oneconf 0.2.8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# -*- coding: utf-8 -*-
# Copyright (C) 2011 Canonical
#
# Authors:
# Didier Roche
#
# 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; version 3.
#
# 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.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
from gi.repository import GObject
import json
import logging
import os
import time
from oneconf.enums import MIN_TIME_WITHOUT_ACTIVITY
import utils
from netstatus import NetworkStatusWatcher
from ssohandler import LoginBackendDbusSSO
from paths import (ONECONF_CACHE_DIR, OTHER_HOST_FILENAME, HOST_DATA_FILENAME, PENDING_UPLOAD_FILENAME,
PACKAGE_LIST_PREFIX, LOGO_PREFIX, LAST_SYNC_DATE_FILENAME, WEBCATALOG_SILO_SOURCE)
from piston_mini_client.failhandlers import APIError
from httplib import BadStatusLine
from httplib2 import socket, ServerNotFoundError, RedirectLimit
LOG = logging.getLogger(__name__)
class SyncHandler(GObject.GObject):
'''Handle sync request with the server from the dbus service'''
def __init__(self, hosts, package_handler=None, infraclient=None, dbusemitter=None):
GObject.GObject.__init__(self)
self._netstate = NetworkStatusWatcher()
self._sso_login = LoginBackendDbusSSO()
self._can_sync = False
self.credential = None
self.hosts = hosts
self.infraclient = infraclient
self.package_handler = package_handler
if dbusemitter:
self.emit_new_hostlist = dbusemitter.hostlist_changed
self.emit_new_packagelist = dbusemitter.packagelist_changed
self.emit_new_logo = dbusemitter.logo_changed
self.emit_new_latestsync = dbusemitter.latestsync_changed
self._netstate.connect("changed", self._network_state_changed)
self._sso_login.connect("login-result", self._sso_login_result)
def _refresh_can_sync(self):
'''compute current syncable state before asking for refresh the value'''
new_can_sync = (self.credential is not None) and self._netstate.connected
if self._can_sync == new_can_sync:
return
self._can_sync = new_can_sync
# we can now start syncing (as it's a new status), adding the timeout
if self._can_sync:
self.process_sync()
# adding the timeout only if we are not on a single sync
if not "ONECONF_SINGLE_SYNC" in os.environ or not os.environ["ONECONF_SINGLE_SYNC"]:
GObject.timeout_add_seconds(MIN_TIME_WITHOUT_ACTIVITY, self.process_sync)
def _sso_login_result(self, sso_login, credential):
if credential == self.credential:
return
self.credential = credential
# Prepare the authenticated infraclient
if self.credential and not self.infraclient:
from piston_mini_client.auth import OAuthAuthorizer
from infraclient_pristine import WebCatalogAPI
from oneconf.distributor import get_distro
service_root = get_distro().ONECONF_SERVER
authorizer = OAuthAuthorizer(token_key=credential['token'],
token_secret=credential['token_secret'],
consumer_key=credential['consumer_key'],
consumer_secret=credential['consumer_secret'],
oauth_realm='Ubuntu Software Center')
self.infraclient = WebCatalogAPI(service_root=service_root,
auth=authorizer)
self._refresh_can_sync()
def _network_state_changed(self, netstate, connected):
self._refresh_can_sync()
def check_if_refresh_needed(self, old_data, new_data, hostid, key):
'''Return if data dictionnary needs to be refreshed'''
need_refresh = False
LOG.debug("Check if %s needs to be refreshed for %s" % (key, hostid))
try:
if old_data[hostid]['%s_checksum' % key] != new_data[hostid]['%s_checksum' % key]:
need_refresh = True
except KeyError:
# there was no old_data, if the new ones are not none, refresh
if new_data[hostid]['%s_checksum' % key]:
need_refresh = True
if need_refresh:
LOG.debug("Refresh new %s" % key)
return need_refresh
def check_if_push_needed(self, local_data, distant_data, key):
'''Return if data dictionnary needs to be refreshed
Contrary to refresh needed, we are sure that the host is registered.
However the local checksum can be null, telling that no refresh is needed'''
LOG.debug("Check if %s for current host need to be pushed to infra" % key)
try:
need_push = (local_data['%s_checksum' % key] and (local_data['%s_checksum' % key] != distant_data['%s_checksum' % key]))
except KeyError:
need_push = True
if need_push:
LOG.debug("Push new %s" % key)
return need_push
def emit_new_hostlist(self):
'''this signal will be bound at init time'''
LOG.warning("emit_new_hostlist not bound to anything")
def emit_new_packagelist(self, hostid):
'''this signal will be bound at init time'''
LOG.warning("emit_new_packagelist(%s) not bound to anything" % hostid)
def emit_new_logo(self, hostid):
'''this signal will be bound at init time'''
LOG.warning("emit_new_logo(%s) not bound to anything" % hostid)
def emit_new_latestsync(self, timestamp):
'''this signal will be bound at init time'''
LOG.warning("emit_new_lastestsync(%s) not bound to anything" % timestamp)
def process_sync(self):
'''start syncing what's needed if can sync
process sync can be either started directly, or when can_sync changed'''
# we can't no more sync, removing the timeout
if not self._can_sync:
return False
LOG.debug("Start processing sync")
# Check server connection
try:
if self.infraclient.server_status() != 'ok':
LOG.error("WebClient server answering but not available")
return True
except (APIError, socket.error, ValueError, ServerNotFoundError, BadStatusLine, RedirectLimit), e:
LOG.error ("WebClient server answer error: %s", e)
return True
# Try to do every other hosts pending changes first (we will get fresh
# data then)
try:
pending_upload_filename = os.path.join(self.hosts.get_currenthost_dir(), PENDING_UPLOAD_FILENAME)
with open(pending_upload_filename, 'r') as f:
pending_changes = json.load(f)
for hostid in pending_changes.keys():
# now do action depending on what needs to be refreshed
try:
# we can only remove distant machines for now, not register new ones
try:
if not pending_changes[hostid].pop('share_inventory'):
LOG.debug("Removing machine %s requested as a pending change" % hostid)
self.infraclient.delete_machine(machine_uuid=hostid)
except APIError, e:
LOG.error("WebClient server doesn't want to remove hostid (%s): %s" % (hostid, e))
pending_changes[hostid]['share_inventory'] = False # append it again to be done
except KeyError:
pass
# after all changes, is hostid still relevant?
if not pending_changes[hostid]:
pending_changes.pop(hostid)
# no more change, remove the file
if not pending_changes:
LOG.debug("No more pending changes remaining, removing the file")
os.remove(pending_upload_filename)
# update the remaining tasks
else:
utils.save_json_file_update(pending_upload_filename, pending_changes)
except IOError:
pass
except ValueError:
LOG.warning("The pending file is broken, ignoring")
current_hostid = self.hosts.current_host['hostid']
old_hosts = self.hosts.other_hosts
hostlist_changed = None
packagelist_changed = []
logo_changed = []
# Get all machines
try:
full_hosts_list = self.infraclient.list_machines()
except APIError, e:
LOG.error ("Invalid machine list from server, stopping sync: %s" % e)
return True
other_hosts = {}
distant_current_host = {}
for machine in full_hosts_list:
hostid = machine.pop("uuid")
if hostid != current_hostid:
other_hosts[hostid] = machine
else:
distant_current_host = machine
# now refresh packages list for every hosts
for hostid in other_hosts:
# init the list as the infra can not send it
if not "packages_checksum" in other_hosts[hostid]:
other_hosts[hostid]["packages_checksum"] = None
packagelist_filename = os.path.join(self.hosts.get_currenthost_dir(), '%s_%s' % (PACKAGE_LIST_PREFIX, hostid))
if self.check_if_refresh_needed(old_hosts, other_hosts, hostid, 'packages'):
try:
new_package_list = self.infraclient.list_packages(machine_uuid=hostid)
utils.save_json_file_update(packagelist_filename, new_package_list)
# if already loaded, unload the package cache
if self.package_handler:
try:
self.package_handler.package_list[hostid]['valid'] = False
except KeyError:
pass
packagelist_changed.append(hostid)
except APIError, e:
LOG.error ("Invalid package data from server: %s", e)
try:
old_checksum = old_hosts[hostid]['packages_checksum']
except KeyError:
old_checksum = None
other_hosts[hostid]['packages_checksum'] = old_checksum
# refresh the logo for every hosts as well
# WORKING but not wanted on the isd side for now
#if self.check_if_refresh_needed(old_hosts, other_hosts, hostid, 'logo'):
# try:
# logo_content = self.infraclient.get_machine_logo(machine_uuid=hostid)
# logo_file = open(os.path.join(self.hosts.get_currenthost_dir(), "%s_%s.png" % (LOGO_PREFIX, hostid)), 'wb+')
# logo_file.write(self.infraclient.get_machine_logo(machine_uuid=hostid))
# logo_file.close()
# logo_changed.append(hostid)
# except APIError, e:
# LOG.error ("Invalid data from server: %s", e)
# try:
# old_checksum = old_hosts[hostid]['logo_checksum']
# except KeyError:
# old_checksum = None
# other_hosts[hostid]['logo_checksum'] = old_checksum
# Now that the package list and logo are successfully downloaded, save
# the hosts metadata there. This removes as well the remaining package list and logo
LOG.debug("Check if other hosts metadata needs to be refreshed")
if other_hosts != old_hosts:
LOG.debug("Refresh new host")
hostlist_changed = True
other_host_filename = os.path.join(ONECONF_CACHE_DIR, current_hostid, OTHER_HOST_FILENAME)
utils.save_json_file_update(other_host_filename, other_hosts)
self.hosts.update_other_hosts()
# now push current host
if not self.hosts.current_host['share_inventory']:
LOG.debug("Ensure that current host is not shared")
try:
self.infraclient.delete_machine(machine_uuid=current_hostid)
except APIError, e:
# just a debug message as it can be already not shared
LOG.debug ("Can't delete current host from infra: %s" % e)
else:
LOG.debug("Push current host to infra now")
# check if current host changed
try:
if self.hosts.current_host['hostname'] != distant_current_host['hostname']:
try:
self.infraclient.update_machine(machine_uuid=current_hostid, hostname=self.hosts.current_host['hostname'])
LOG.debug ("Host data refreshed")
except APIError, e:
LOG.error ("Can't update machine: %s", e)
except KeyError:
try:
self.infraclient.update_machine(machine_uuid=current_hostid, hostname=self.hosts.current_host['hostname'])
LOG.debug ("New host registered done")
distant_current_host = {'packages_checksum': None, 'logo_checksum': None}
except APIError, e:
LOG.error ("Can't register new host: %s", e)
# local package list
if self.check_if_push_needed(self.hosts.current_host, distant_current_host, 'packages'):
local_packagelist_filename = os.path.join(self.hosts.get_currenthost_dir(), '%s_%s' % (PACKAGE_LIST_PREFIX, current_hostid))
try:
with open(local_packagelist_filename, 'r') as f:
self.infraclient.update_packages(machine_uuid=current_hostid, packages_checksum=self.hosts.current_host['packages_checksum'], package_list=json.load(f))
except (APIError, IOError), e:
LOG.error ("Can't push current package list: %s", e)
# local logo
# WORKING but not wanted on the isd side for now
#if self.check_if_push_needed(self.hosts.current_host, distant_current_host, 'logo'):
# logo_file = open(os.path.join(self.hosts.get_currenthost_dir(), "%s_%s.png" % (LOGO_PREFIX, current_hostid))).read()
# try:
# self.infraclient.update_machine_logo(machine_uuid=current_hostid, logo_checksum=self.hosts.current_host['logo_checksum'], logo_content=logo_file)
# LOG.debug ("refresh done")
# except APIError, e:
# LOG.error ("Error while pushing current logo: %s", e)
# write the last sync date
timestamp = str(time.time())
content = {"last_sync": timestamp}
utils.save_json_file_update(os.path.join(self.hosts.get_currenthost_dir(), LAST_SYNC_DATE_FILENAME), content)
# send dbus signal if needed events (just now so that we don't block on remaining operations)
if hostlist_changed:
self.emit_new_hostlist()
for hostid in packagelist_changed:
self.emit_new_packagelist(hostid)
for hostid in logo_changed:
self.emit_new_logo(hostid)
self.emit_new_latestsync(timestamp)
# continue syncing in the main loop
return True
if __name__ == '__main__':
logging.basicConfig(level=logging.DEBUG)
from dbus.mainloop.glib import DBusGMainLoop
DBusGMainLoop(set_as_default=True)
from hosts import Hosts
import sys
from infraclient_fake import WebCatalogAPI
os.environ["ONECONF_SINGLE_SYNC"] = "True"
sync_handler = SyncHandler(Hosts(), infraclient=WebCatalogAPI(WEBCATALOG_SILO_SOURCE))
loop = GObject.MainLoop()
GObject.timeout_add_seconds(15, loop.quit)
loop.run()
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