#
# Copyright (C) 2008 Red Hat, Inc.
# Copyright (C) 2008 Cole Robinson <crobinso@redhat.com>
#
# 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.
#

import logging

import libvirt

import virtinst

DEFAULT_POOL_NAME = "default"
DEFAULT_POOL_PATH = "/var/lib/libvirt/images"

def build_default_pool(conn):
    """Helper to build the 'default' storage pool"""
    if not virtinst.util.is_storage_capable(conn):
        # VirtualDisk will raise an error for us
        return
    pool = None
    try:
        pool = conn.storagePoolLookupByName(DEFAULT_POOL_NAME)
    except libvirt.libvirtError:
        pass

    if pool:
        return

    try:
        logging.debug("Attempting to build default pool with target '%s'" %
                      DEFAULT_POOL_PATH)
        defpool = virtinst.Storage.DirectoryPool(conn=conn,
                                                 name=DEFAULT_POOL_NAME,
                                                 target_path=DEFAULT_POOL_PATH)
        newpool = defpool.install(build=True, create=True)
        newpool.setAutostart(True)
    except Exception, e:
        raise RuntimeError(_("Couldn't create default storage pool '%s': %s") %
                             (DEFAULT_POOL_PATH, str(e)))