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#  Copyright (C) 2017-2018  Red Hat, Inc. <http://www.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
#  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.

"""
Description:

Test Cases in this module tests the
snapshot information commands.

"""
from glusto.core import Glusto as g
from glustolibs.gluster.exceptions import ExecutionError
from glustolibs.gluster.gluster_base_class import GlusterBaseClass
from glustolibs.gluster.gluster_base_class import runs_on
from glustolibs.gluster.snap_ops import (snap_create,
                                         get_snap_info,
                                         get_snap_info_by_volname,
                                         get_snap_info_by_snapname)


@runs_on([['replicated', 'distributed-replicated', 'dispersed',
           'distributed', 'distributed-dispersed'],
          ['glusterfs', 'nfs', 'cifs']])
class SnapshotInfo(GlusterBaseClass):

    @classmethod
    def setUpClass(cls):
        GlusterBaseClass.setUpClass.im_func(cls)
        cls.snap1 = "snap1"
        cls.snap2 = "snap2"

    def setUp(self):

        # SettingUp volume and Mounting the volume
        GlusterBaseClass.setUpClass.im_func(self)
        g.log.info("Starting to SetUp Volume")
        ret = self.setup_volume_and_mount_volume(mounts=self.mounts)
        if not ret:
            raise ExecutionError("Failed to setup volume %s" % self.volname)
        g.log.info("Volume %s has been setup successfully", self.volname)

    def test_snap_info(self):
        """
        1. Create volumes
        2. create multiple snapshots
        3. Check snapshot info for snapshots created
           using snap name, using volume name and
           without using snap name and volume name
        """
        # pylint: disable=too-many-statements
        # Creating snapshot with description
        g.log.info("Starting to Create snapshot")
        for count in range(0, 2):
            self.snap = "snap%s" % count
            ret, _, _ = snap_create(self.mnode, self.volname,
                                    self.snap,
                                    description='$p3C!@l C#@R@cT#R$')
            self.assertEqual(ret, 0, ("Failed to create snapshot for volume %s"
                                      % self.volname))
        g.log.info("Snapshot %s created successfully"
                   " for volume %s", self.snap, self.volname)

        # Check snapshot info using snap name
        g.log.info("Checking snapshot info using snap name")
        snap_info_chk = get_snap_info_by_snapname(self.mnode,
                                                  self.snap1)
        self.assertIsNotNone(snap_info_chk, "Failed to get snap info")
        self.assertEqual(snap_info_chk['name'], "%s" % self.snap1, "Failed "
                         "to show snapshot info for %s"
                         % self.snap1)
        g.log.info("Successfully checked snapshot info for %s", self.snap1)

        # Check snapshot info using volname
        g.log.info("Checking snapshot info using volname")
        snap_vol_info = get_snap_info_by_volname(self.mnode, self.volname)
        self.assertIsNotNone(snap_vol_info, "Failed to get snap info")
        self.assertEqual(snap_vol_info['originVolume']['name'], "%s"
                         % self.volname,
                         "Failed to show snapshot info for %s"
                         % self.volname)
        g.log.info("Successfully checked snapshot info for %s", self.volname)

        # Validate snapshot information
        g.log.info("Validating snapshot information")
        info_snaps = get_snap_info(self.mnode)
        self.assertIsNotNone(info_snaps, "Failed to get snap info")
        for snap in range(0, 2):
            self.assertEqual(info_snaps[snap]['name'], "snap%s" % snap,
                             "Failed to validate"
                             "snap information")
        g.log.info("Successfully Validated snap Information")

    def tearDown(self):

        # Unmount and cleanup original volume
        g.log.info("Starting to Unmount Volume and Cleanup Volume")
        ret = self.unmount_volume_and_cleanup_volume(mounts=self.mounts)
        if not ret:
            raise ExecutionError("Failed to umount the vol & cleanup Volume")
        g.log.info("Successful in umounting the volume and Cleanup")