2:21 p.m.
From: Aline Manera <alinefm(a)br.ibm.com>
The model implementation for storage volume and its sub-resources were added to
model_/storagevolumes.py
Signed-off-by: Aline Manera <alinefm(a)br.ibm.com>
---
src/kimchi/model_/storagevolumes.py | 176 +++++++++++++++++++++++++++++++++++
1 file changed, 176 insertions(+)
create mode 100644 src/kimchi/model_/storagevolumes.py
diff --git a/src/kimchi/model_/storagevolumes.py b/src/kimchi/model_/storagevolumes.py
new file mode 100644
index 0000000..0edac52
--- /dev/null
+++ b/src/kimchi/model_/storagevolumes.py
@@ -0,0 +1,176 @@
+#
+# Project Kimchi
+#
+# Copyright IBM, Corp. 2013
+#
+# Authors:
+# Aline Manera <alinefm(a)linux.vnet.ibm.com>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+
+import os
+
+import libvirt
+
+from kimchi import xmlutils
+from kimchi.exception import InvalidOperation, IsoFormatError
+from kimchi.exception import MissingParameter, NotFoundError, OperationFailed
+from kimchi.isoinfo import IsoImage
+from kimchi.model_.storagepools import StoragePoolModel
+
+
+VOLUME_TYPE_MAP = {0: 'file',
+ 1: 'block',
+ 2: 'directory',
+ 3: 'network'}
+
+
+class StorageVolumesModel(object):
+ def __init__(self, **kargs):
+ self.conn = kargs['conn']
+
+ def create(self, pool, params):
+ vol_xml = """
+ <volume>
+ <name>%(name)s</name>
+ <allocation unit="MiB">%(allocation)s</allocation>
+ <capacity unit="MiB">%(capacity)s</capacity>
+ <source>
+ </source>
+ <target>
+ <format type='%(format)s'/>
+ </target>
+ </volume>
+ """
+ params.setdefault('allocation', 0)
+ params.setdefault('format', 'qcow2')
+
+ try:
+ pool = StoragePoolModel.get_storagepool(pool, self.conn)
+ name = params['name']
+ xml = vol_xml % params
+ except KeyError, key:
+ raise MissingParameter(key)
+
+ try:
+ pool.createXML(xml, 0)
+ except libvirt.libvirtError as e:
+ raise OperationFailed(e.get_error_message())
+ return name
+
+ def get_list(self, pool):
+ pool = StoragePoolModel.get_storagepool(pool, self.conn)
+ if not pool.isActive():
+ err = "Unable to list volumes in inactive storagepool %s"
+ raise InvalidOperation(err % pool.name())
+ try:
+ pool.refresh(0)
+ return pool.listVolumes()
+ except libvirt.libvirtError as e:
+ raise OperationFailed(e.get_error_message())
+
+
+class StorageVolumeModel(object):
+ def __init__(self, **kargs):
+ self.conn = kargs['conn']
+
+ def _get_storagevolume(self, pool, name):
+ pool = StoragePoolModel.get_storagepool(pool, self.conn)
+ if not pool.isActive():
+ err = "Unable to list volumes in inactive storagepool %s"
+ raise InvalidOperation(err % pool.name())
+ try:
+ return pool.storageVolLookupByName(name)
+ except libvirt.libvirtError as e:
+ if e.get_error_code() == libvirt.VIR_ERR_NO_STORAGE_VOL:
+ raise NotFoundError("Storage Volume '%s' not found" %
name)
+ else:
+ raise
+
+ def lookup(self, pool, name):
+ vol = self._get_storagevolume(pool, name)
+ path = vol.path()
+ info = vol.info()
+ xml = vol.XMLDesc(0)
+ fmt = xmlutils.xpath_get_text(xml, "/volume/target/format/@type")[0]
+ res = dict(type=VOLUME_TYPE_MAP[info[0]],
+ capacity=info[1],
+ allocation=info[2],
+ path=path,
+ format=fmt)
+ if fmt == 'iso':
+ if os.path.islink(path):
+ path = os.path.join(os.path.dirname(path), os.readlink(path))
+ os_distro = os_version = 'unknown'
+ try:
+ iso_img = IsoImage(path)
+ os_distro, os_version = iso_img.probe()
+ bootable = True
+ except IsoFormatError:
+ bootable = False
+ res.update(
+ dict(os_distro=os_distro, os_version=os_version, path=path,
+ bootable=bootable))
+
+ return res
+
+ def wipe(self, pool, name):
+ volume = self._get_storagevolume(pool, name)
+ try:
+ volume.wipePattern(libvirt.VIR_STORAGE_VOL_WIPE_ALG_ZERO, 0)
+ except libvirt.libvirtError as e:
+ raise OperationFailed(e.get_error_message())
+
+ def delete(self, pool, name):
+ volume = self._get_storagevolume(pool, name)
+ try:
+ volume.delete(0)
+ except libvirt.libvirtError as e:
+ raise OperationFailed(e.get_error_message())
+
+ def resize(self, pool, name, size):
+ size = size << 20
+ volume = self._get_storagevolume(pool, name)
+ try:
+ volume.resize(size, 0)
+ except libvirt.libvirtError as e:
+ raise OperationFailed(e.get_error_message())
+
+
+class IsoVolumesModel(object):
+ def __init__(self, **kargs):
+ self.conn = kargs['conn']
+ self.storagevolume = StorageVolumeModel(**kargs)
+
+ def get_list(self):
+ iso_volumes = []
+ conn = self.conn.get()
+ pools = conn.listStoragePools()
+ pools += conn.listDefinedStoragePools()
+
+ for pool in pools:
+ try:
+ pool.refresh(0)
+ volumes = pool.listVolumes()
+ except InvalidOperation:
+ # Skip inactive pools
+ continue
+
+ for volume in volumes:
+ res = self.storagevolume.lookup(pool, volume)
+ if res['format'] == 'iso':
+ res['name'] = '%s' % volume
+ iso_volumes.append(res)
+ return iso_volumes
--
1.7.10.4