"""cubicweb-ctl commands and command handlers specific to the server.serverconfig
:organization: Logilab
:copyright: 2001-2008 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
"""
__docformat__ = "restructuredtext en"
import os
from logilab.common.configuration import REQUIRED, Configuration, ini_format_section
from cubicweb import AuthenticationError, ExecutionError, ConfigurationError
from cubicweb.toolsutils import Command, CommandHandler, pop_arg, cmd_run, \
register_commands, confirm, restrict_perms_to_user
from cubicweb.server.serverconfig import ServerConfiguration
# utility functions ###########################################################
def source_cnx(source, dbname=None, special_privs=False, verbose=True):
"""open and return a connection to the system database defined in the
given server.serverconfig
"""
from getpass import getpass
from logilab.common.db import get_connection
dbhost = source['db-host']
if dbname is None:
dbname = source['db-name']
driver = source['db-driver']
print '**** connecting to %s database %s@%s' % (driver, dbname, dbhost),
if not verbose or (not special_privs and source.get('db-user')):
user = source['db-user']
print 'as', user
if source.get('db-password'):
password = source['db-password']
else:
password = getpass('password: ')
else:
print
if special_privs:
print 'WARNING'
print 'the user will need the following special access rights on the database:'
print special_privs
print
default_user = source.get('db-user', os.environ.get('USER', ''))
user = raw_input('user (%r by default): ' % default_user)
user = user or default_user
if user == source.get('db-user') and source.get('db-password'):
password = source['db-password']
else:
password = getpass('password: ')
return get_connection(driver, dbhost, dbname, user, password=password,
port=source.get('db-port'))
def system_source_cnx(source, dbms_system_base=False,
special_privs='CREATE/DROP DATABASE', verbose=True):
"""shortcut to get a connextion to the application system database
defined in the given config. If <dbms_system_base> is True,
connect to the dbms system database instead (for task such as
create/drop the application database)
"""
if dbms_system_base:
from logilab.common.adbh import get_adv_func_helper
system_db = get_adv_func_helper(source['db-driver']).system_database()
return source_cnx(source, system_db, special_privs=special_privs, verbose=verbose)
return source_cnx(source, special_privs=special_privs, verbose=verbose)
def _db_sys_cnx(source, what, db=None, user=None, verbose=True):
"""return a connection on the RDMS system table (to create/drop a user
or a database
"""
from logilab.common.adbh import get_adv_func_helper
special_privs = ''
driver = source['db-driver']
helper = get_adv_func_helper(driver)
if user is not None and helper.users_support:
special_privs += '%s USER' % what
if db is not None:
special_privs += ' %s DATABASE' % what
# connect on the dbms system base to create our base
cnx = system_source_cnx(source, True, special_privs=special_privs, verbose=verbose)
# disable autocommit (isolation_level(1)) because DROP and
# CREATE DATABASE can't be executed in a transaction
try:
cnx.set_isolation_level(0)
except AttributeError:
# set_isolation_level() is psycopg specific
pass
return cnx
def generate_sources_file(sourcesfile, sourcescfg, keys=None):
"""serialize repository'sources configuration into a INI like file
the `keys` parameter may be used to sort sections
"""
from cubicweb.server.sources import SOURCE_TYPES
if keys is None:
keys = sourcescfg.keys()
else:
for key in sourcescfg:
if not key in keys:
keys.append(key)
stream = open(sourcesfile, 'w')
for uri in keys:
sconfig = sourcescfg[uri]
if isinstance(sconfig, dict):
# get a Configuration object
_sconfig = Configuration(options=SOURCE_TYPES[sconfig['adapter']].options)
for attr, val in sconfig.items():
if attr == 'uri':
continue
if attr == 'adapter':
_sconfig.adapter = val
else:
_sconfig.set_option(attr, val)
sconfig = _sconfig
optsbysect = list(sconfig.options_by_section())
assert len(optsbysect) == 1
ini_format_section(stream, uri, optsbysect[0][1])
if hasattr(sconfig, 'adapter'):
print >> stream
print >> stream, '# adapter for this source (YOU SHOULD NOT CHANGE THIS)'
print >> stream, 'adapter=%s' % sconfig.adapter
print >> stream
def repo_cnx(config):
"""return a in-memory repository and a db api connection it"""
from cubicweb.dbapi import in_memory_cnx
from cubicweb.server.utils import manager_userpasswd
try:
login = config.sources()['admin']['login']
pwd = config.sources()['admin']['password']
except KeyError:
login, pwd = manager_userpasswd()
while True:
try:
return in_memory_cnx(config, login, pwd)
except AuthenticationError:
print 'wrong user/password'
login, pwd = manager_userpasswd()
# repository specific command handlers ########################################
class RepositoryCreateHandler(CommandHandler):
cmdname = 'create'
cfgname = 'repository'
def bootstrap(self, cubes, inputlevel=0):
"""create an application by copying files from the given cube and by
asking information necessary to build required configuration files
"""
from cubicweb.server.sources import SOURCE_TYPES
config = self.config
print 'application\'s repository configuration'
print '-' * 72
config.input_config('email', inputlevel)
if config.pyro_enabled():
config.input_config('pyro-server', inputlevel)
print
print 'repository sources configuration'
print '-' * 72
sourcesfile = config.sources_file()
sconfig = Configuration(options=SOURCE_TYPES['native'].options)
sconfig.adapter = 'native'
sconfig.input_config(inputlevel=inputlevel)
sourcescfg = {'system': sconfig}
while raw_input('enter another source [y/N]: ').strip().lower() == 'y':
sourcetype = raw_input('source type (%s): ' % ', '.join(SOURCE_TYPES.keys()))
sconfig = Configuration(options=SOURCE_TYPES[sourcetype].options)
sconfig.adapter = sourcetype
sourceuri = raw_input('source uri: ').strip()
assert not sourceuri in sourcescfg
sconfig.input_config(inputlevel=inputlevel)
sourcescfg[sourceuri] = sconfig
# module names look like cubes.mycube.themodule
sourcecube = SOURCE_TYPES[sourcetype].module.split('.', 2)[1]
# if the source adapter is coming from an external component, ensure
# it's specified in used cubes
if sourcecube != 'cubicweb' and not sourcecube in cubes:
cubes.append(sourcecube)
sconfig = Configuration(options=USER_OPTIONS)
sconfig.input_config(inputlevel=inputlevel)
sourcescfg['admin'] = sconfig
generate_sources_file(sourcesfile, sourcescfg, ['admin', 'system'])
restrict_perms_to_user(sourcesfile)
# remember selected cubes for later initialization of the database
config.write_bootstrap_cubes_file(cubes)
def postcreate(self):
if confirm('do you want to create repository\'s system database?'):
verbosity = (self.config.mode == 'installed') and 'y' or 'n'
cmd_run('db-create', self.config.appid, '--verbose=%s' % verbosity)
else:
print 'nevermind, you can do it later using the db-create command'
USER_OPTIONS = (
('login', {'type' : 'string',
'default': REQUIRED,
'help': "cubicweb manager account's login "
'(this user will be created)',
'inputlevel': 0,
}),
('password', {'type' : 'password',
'help': "cubicweb manager account's password",
'inputlevel': 0,
}),
)
class RepositoryDeleteHandler(CommandHandler):
cmdname = 'delete'
cfgname = 'repository'
def cleanup(self):
"""remove application's configuration and database"""
from logilab.common.adbh import get_adv_func_helper
source = self.config.sources()['system']
dbname = source['db-name']
helper = get_adv_func_helper(source['db-driver'])
if confirm('delete database %s ?' % dbname):
user = source['db-user'] or None
cnx = _db_sys_cnx(source, 'DROP DATABASE', user=user)
cursor = cnx.cursor()
try:
cursor.execute('DROP DATABASE %s' % dbname)
print 'database %s dropped' % dbname
# XXX should check we are not connected as user
if user and helper.users_support and \
confirm('delete user %s ?' % user, default_is_yes=False):
cursor.execute('DROP USER %s' % user)
print 'user %s dropped' % user
cnx.commit()
except:
cnx.rollback()
raise
class RepositoryStartHandler(CommandHandler):
cmdname = 'start'
cfgname = 'repository'
def start_command(self, ctlconf, debug):
command = ['cubicweb-ctl start-repository ']
if debug:
command.append('--debug')
command.append(self.config.appid)
return ' '.join(command)
class RepositoryStopHandler(CommandHandler):
cmdname = 'stop'
cfgname = 'repository'
def poststop(self):
"""if pyro is enabled, ensure the repository is correctly
unregistered
"""
if self.config.pyro_enabled():
from cubicweb.server.repository import pyro_unregister
pyro_unregister(self.config)
# repository specific commands ################################################
class CreateApplicationDBCommand(Command):
"""Create the system database of an application (run after 'create').
You will be prompted for a login / password to use to connect to
the system database. The given user should have almost all rights
on the database (ie a super user on the dbms allowed to create
database, users, languages...).
<application>
the identifier of the application to initialize.
"""
name = 'db-create'
arguments = '<application>'
options = (
("create-db",
{'short': 'c', 'type': "yn", 'metavar': '<y or n>',
'default': True,
'help': 'create the database (yes by default)'}),
("verbose",
{'short': 'v', 'type' : 'yn', 'metavar': '<verbose>',
'default': 'n',
'help': 'verbose mode: will ask all possible configuration questions',
}
),
)
def run(self, args):
"""run the command with its specific arguments"""
from logilab.common.adbh import get_adv_func_helper
from indexer import get_indexer
verbose = self.get('verbose')
appid = pop_arg(args, msg="No application specified !")
config = ServerConfiguration.config_for(appid)
create_db = self.config.create_db
source = config.sources()['system']
driver = source['db-driver']
helper = get_adv_func_helper(driver)
if create_db:
# connect on the dbms system base to create our base
dbcnx = _db_sys_cnx(source, 'CREATE DATABASE and / or USER', verbose=verbose)
cursor = dbcnx.cursor()
try:
if helper.users_support:
user = source['db-user']
if not helper.user_exists(cursor, user) and \
confirm('create db user %s ?' % user, default_is_yes=False):
helper.create_user(source['db-user'], source['db-password'])
print 'user %s created' % user
dbname = source['db-name']
if dbname in helper.list_databases(cursor):
if confirm('DB %s already exists -- do you want to drop it ?' % dbname):
cursor.execute('DROP DATABASE %s' % dbname)
else:
return
if dbcnx.logged_user != source['db-user']:
helper.create_database(cursor, dbname, source['db-user'],
source['db-encoding'])
else:
helper.create_database(cursor, dbname,
encoding=source['db-encoding'])
dbcnx.commit()
print 'database %s created' % source['db-name']
except:
dbcnx.rollback()
raise
cnx = system_source_cnx(source, special_privs='LANGUAGE C', verbose=verbose)
cursor = cnx.cursor()
indexer = get_indexer(driver)
indexer.init_extensions(cursor)
# postgres specific stuff
if driver == 'postgres':
# install plpythonu/plpgsql language if not installed by the cube
for extlang in ('plpythonu', 'plpgsql'):
helper.create_language(cursor, extlang)
cursor.close()
cnx.commit()
print 'database for application %s created and necessary extensions installed' % appid
print
if confirm('do you want to initialize the system database?'):
cmd_run('db-init', config.appid)
else:
print 'nevermind, you can do it later using the db-init command'
class InitApplicationCommand(Command):
"""Initialize the system database of an application (run after 'db-create').
You will be prompted for a login / password to use to connect to
the system database. The given user should have the create tables,
and grant permissions.
<application>
the identifier of the application to initialize.
"""
name = 'db-init'
arguments = '<application>'
options = (
("drop",
{'short': 'd', 'action': 'store_true',
'default': False,
'help': 'insert drop statements to remove previously existant \
tables, indexes... (no by default)'}),
)
def run(self, args):
from cubicweb.server import init_repository
appid = pop_arg(args, msg="No application specified !")
config = ServerConfiguration.config_for(appid)
init_repository(config, drop=self.config.drop)
class GrantUserOnApplicationCommand(Command):
"""Grant a database user on a repository system database.
<application>
the identifier of the application
<user>
the database's user requiring grant access
"""
name = 'db-grant-user'
arguments = '<application> <user>'
options = (
("set-owner",
{'short': 'o', 'type' : "yn", 'metavar' : '<yes or no>',
'default' : False,
'help': 'Set the user as tables owner if yes (no by default).'}
),
)
def run(self, args):
"""run the command with its specific arguments"""
from cubicweb.server.sqlutils import sqlexec, sqlgrants
appid = pop_arg(args, 1, msg="No application specified !")
user = pop_arg(args, msg="No user specified !")
config = ServerConfiguration.config_for(appid)
source = config.sources()['system']
set_owner = self.config.set_owner
cnx = system_source_cnx(source, special_privs='GRANT')
cursor = cnx.cursor()
schema = config.load_schema()
try:
sqlexec(sqlgrants(schema, source['db-driver'], user,
set_owner=set_owner), cursor)
except Exception, ex:
cnx.rollback()
import traceback
traceback.print_exc()
print 'An error occured:', ex
else:
cnx.commit()
print 'grants given to %s on application %s' % (appid, user)
class StartRepositoryCommand(Command):
"""Start an CubicWeb RQL server for a given application.
The server will be accessible through pyro
<application>
the identifier of the application to initialize.
"""
name = 'start-repository'
arguments = '<application>'
options = (
("debug",
{'short': 'D', 'action' : 'store_true',
'help': 'start server in debug mode.'}),
)
def run(self, args):
from cubicweb.server.server import RepositoryServer
appid = pop_arg(args, msg="No application specified !")
config = ServerConfiguration.config_for(appid)
debug = self.config.debug
# create the server
server = RepositoryServer(config, debug)
# go ! (don't daemonize in debug mode)
if not debug and server.daemonize(config['pid-file']) == -1:
return
uid = config['uid']
if uid is not None:
try:
uid = int(uid)
except ValueError:
from pwd import getpwnam
uid = getpwnam(uid).pw_uid
os.setuid(uid)
server.install_sig_handlers()
server.connect(config['host'], 0)
server.run()
def _remote_dump(host, appid, output, sudo=False):
dmpcmd = 'cubicweb-ctl db-dump -o /tmp/%s.dump %s' % (appid, appid)
if sudo:
dmpcmd = 'sudo %s' % (dmpcmd)
dmpcmd = 'ssh -t %s "%s"' % (host, dmpcmd)
print dmpcmd
if os.system(dmpcmd):
raise ExecutionError('Error while dumping the database')
if output is None:
from mx.DateTime import today
date = today().strftime('%Y-%m-%d')
output = '%s-%s.dump' % (appid, date)
cmd = 'scp %s:/tmp/%s.dump %s' % (host, appid, output)
print cmd
if os.system(cmd):
raise ExecutionError('Error while retrieving the dump')
rmcmd = 'ssh -t %s "rm -f /tmp/%s.dump"' % (host, appid)
print rmcmd
if os.system(rmcmd) and not confirm('an error occured while deleting remote dump. Continue anyway?'):
raise ExecutionError('Error while deleting remote dump')
def _local_dump(appid, output):
config = ServerConfiguration.config_for(appid)
# schema=1 to avoid unnecessary schema loading
mih = config.migration_handler(connect=False, schema=1)
mih.backup_database(output, askconfirm=False)
def _local_restore(appid, backupfile, drop):
config = ServerConfiguration.config_for(appid)
# schema=1 to avoid unnecessary schema loading
mih = config.migration_handler(connect=False, schema=1)
mih.restore_database(backupfile, drop)
repo = mih.repo_connect()
# version of the database
dbversions = repo.get_versions()
mih.shutdown()
if not dbversions:
print "bad or missing version information in the database, don't upgrade file system"
return
# version of installed software
eversion = dbversions['cubicweb']
status = application_status(config, eversion, dbversions)
# * database version > installed software
if status == 'needsoftupgrade':
print "database is using some earlier version than installed software!"
print "please upgrade your software and then upgrade the instance"
print "using command 'cubicweb-ctl upgrade %s'" % config.appid
return
# * database version < installed software, an upgrade will be necessary
# anyway, just rewrite vc.conf and warn user he has to upgrade
if status == 'needapplupgrade':
print "database is using some older version than installed software."
print "You'll have to upgrade the instance using command"
print "'cubicweb-ctl upgrade %s'" % config.appid
return
# * database version = installed software, database version = instance fs version
# ok!
def application_status(config, cubicwebapplversion, vcconf):
cubicwebversion = config.cubicweb_version()
if cubicwebapplversion > cubicwebversion:
return 'needsoftupgrade'
if cubicwebapplversion < cubicwebversion:
return 'needapplupgrade'
for cube in config.cubes():
try:
softversion = config.cube_version(cube)
except ConfigurationError:
print "no cube version information for %s, is the cube installed?" % cube
continue
try:
applversion = vcconf[cube]
except KeyError:
print "no cube version information for %s in version configuration" % cube
continue
if softversion == applversion:
continue
if softversion > applversion:
return 'needsoftupgrade'
elif softversion < applversion:
return 'needapplupgrade'
return None
class DBDumpCommand(Command):
"""Backup the system database of an application.
<application>
the identifier of the application to backup
format [[user@]host:]appname
"""
name = 'db-dump'
arguments = '<application>'
options = (
("output",
{'short': 'o', 'type' : "string", 'metavar' : '<file>',
'default' : None,
'help': 'Specify the backup file where the backup will be stored.'}
),
('sudo',
{'short': 's', 'action' : 'store_true',
'default' : False,
'help': 'Use sudo on the remote host.'}
),
)
def run(self, args):
appid = pop_arg(args, 1, msg="No application specified !")
if ':' in appid:
host, appid = appid.split(':')
_remote_dump(host, appid, self.config.output, self.config.sudo)
else:
_local_dump(appid, self.config.output)
class DBRestoreCommand(Command):
"""Restore the system database of an application.
<application>
the identifier of the application to restore
"""
name = 'db-restore'
arguments = '<application> <backupfile>'
options = (
("no-drop",
{'short': 'n', 'action' : 'store_true',
'default' : False,
'help': 'for some reason the database doesn\'t exist and so '
'should not be dropped.'}
),
)
def run(self, args):
appid = pop_arg(args, 1, msg="No application specified !")
backupfile = pop_arg(args, msg="No backup file specified !")
_local_restore(appid, backupfile, not self.config.no_drop)
class DBCopyCommand(Command):
"""Copy the system database of an application (backup and restore).
<src-application>
the identifier of the application to backup
format [[user@]host:]appname
<dest-application>
the identifier of the application to restore
"""
name = 'db-copy'
arguments = '<src-application> <dest-application>'
options = (
("no-drop",
{'short': 'n', 'action' : 'store_true',
'default' : False,
'help': 'For some reason the database doesn\'t exist and so '
'should not be dropped.'}
),
("keep-dump",
{'short': 'k', 'action' : 'store_true',
'default' : False,
'help': 'Specify that the dump file should not be automatically removed.'}
),
('sudo',
{'short': 's', 'action' : 'store_true',
'default' : False,
'help': 'Use sudo on the remote host.'}
),
)
def run(self, args):
import tempfile
srcappid = pop_arg(args, 1, msg="No source application specified !")
destappid = pop_arg(args, msg="No destination application specified !")
output = tempfile.mktemp()
if ':' in srcappid:
host, srcappid = srcappid.split(':')
_remote_dump(host, srcappid, output, self.config.sudo)
else:
_local_dump(srcappid, output)
_local_restore(destappid, output, not self.config.no_drop)
if self.config.keep_dump:
print 'you can get the dump file at', output
else:
os.remove(output)
class CheckRepositoryCommand(Command):
"""Check integrity of the system database of an application.
<application>
the identifier of the application to check
"""
name = 'db-check'
arguments = '<application>'
options = (
("checks",
{'short': 'c', 'type' : "csv", 'metavar' : '<check list>',
'default' : ('entities', 'relations', 'metadata', 'schema', 'text_index'),
'help': 'Comma separated list of check to run. By default run all \
checks, i.e. entities, relations, text_index and metadata.'}
),
("autofix",
{'short': 'a', 'type' : "yn", 'metavar' : '<yes or no>',
'default' : False,
'help': 'Automatically correct integrity problems if this option \
is set to "y" or "yes", else only display them'}
),
("reindex",
{'short': 'r', 'type' : "yn", 'metavar' : '<yes or no>',
'default' : False,
'help': 're-indexes the database for full text search if this \
option is set to "y" or "yes" (may be long for large database).'}
),
)
def run(self, args):
from cubicweb.server.checkintegrity import check
appid = pop_arg(args, 1, msg="No application specified !")
config = ServerConfiguration.config_for(appid)
repo, cnx = repo_cnx(config)
check(repo, cnx,
self.config.checks, self.config.reindex, self.config.autofix)
class RebuildFTICommand(Command):
"""Rebuild the full-text index of the system database of an application.
<application>
the identifier of the application to rebuild
"""
name = 'db-rebuild-fti'
arguments = '<application>'
options = ()
def run(self, args):
from cubicweb.server.checkintegrity import reindex_entities
appid = pop_arg(args, 1, msg="No application specified !")
config = ServerConfiguration.config_for(appid)
repo, cnx = repo_cnx(config)
session = repo._get_session(cnx.sessionid, setpool=True)
reindex_entities(repo.schema, session)
cnx.commit()
class SynchronizeApplicationSchemaCommand(Command):
"""Synchronize persistent schema with cube schema.
Will synchronize common stuff between the cube schema and the
actual persistent schema, but will not add/remove any entity or relation.
<application>
the identifier of the application to synchronize.
"""
name = 'schema-sync'
arguments = '<application>'
def run(self, args):
appid = pop_arg(args, msg="No application specified !")
config = ServerConfiguration.config_for(appid)
mih = config.migration_handler()
mih.cmd_synchronize_schema()
register_commands( (CreateApplicationDBCommand,
InitApplicationCommand,
GrantUserOnApplicationCommand,
StartRepositoryCommand,
DBDumpCommand,
DBRestoreCommand,
DBCopyCommand,
CheckRepositoryCommand,
RebuildFTICommand,
SynchronizeApplicationSchemaCommand,
) )