neomigrate 2.52 KB
Newer Older
1
#! /usr/bin/python2.4
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
#
# neomaster - run a master node of NEO
#
# Copyright (C) 2006  Nexedi SA
# 
# 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 2
# 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

from optparse import OptionParser
import logging
import time
import os

26
from neo import setupLog
27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

# register options
parser = OptionParser()
parser.add_option('-v', '--verbose', action = 'store_true', 
                  help = 'print verbose messages')
parser.add_option('-s', '--source', help = 'the source database')
parser.add_option('-d', '--destination', help = 'the destination database')
parser.add_option('-c', '--connector', help = 'the NEO connector')
parser.add_option('-n', '--name', help = 'the NEO cluster name')

# parse options
(options, args) = parser.parse_args()
source = options.source or None
destination = options.destination or None
name = options.name or None
connector = options.connector or 'SocketConnector'

# check options
if source is None or destination is None:
    raise RuntimeError('Source and destination databases must be supplied')
if name is None:
    raise RuntimeError('The NEO cluster name must be supplied')

# set up logging
51
setupLog('neomigrate', None, options.verbose or False)
52 53

# open storages
54 55 56
from ZODB.FileStorage import FileStorage
#from ZEO.ClientStorage import ClientStorage as ZEOStorage
from neo.client.Storage import Storage as NEOStorage
57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73
neo_args = { 'connector': connector, 'name': name, }
if os.path.exists(source):
    src = FileStorage(file_name=source)
    dst = NEOStorage(master_nodes=destination, **neo_args)
else:
    src = NEOStorage(master_nodes=source, **neo_args)
    dst = FileStorage(file_name=destination)

# do the job
print "Migrating from %s to %s" % (source, destination)
start = time.time()
dst.copyTransactionsFrom(src, verbose=0)
elapsed = time.time() - start
print "Migration done in %3.5f" % (elapsed, )
if isinstance(dst, NEOStorage):
    print "Don't forget to restart the whole NEO cluster."