[Test] Add test to nuke happy path

Test case:
1. Create a distributed volume, start and mount it
2. Create 1000 dirs and 1000 files under a directory say 'dir1'
3. Set xattr glusterfs.dht.nuke to "test" for dir1
4. Validate dir-1 is not seen from mount point
5. Validate if the entry is moved to '/brickpath/.glusterfs/landfill'
   and deleted eventually.

Change-Id: I6359ee3c39df4e9e024a1536c95d861966f78ce5
Signed-off-by: kshithijiyer <kshithij.ki@gmail.com>

1 files changed, 95 insertions, 0 deletions

diff --git a/tests/functional/dht/test_nuke_happy_path.py b/tests/functional/dht/test_nuke_happy_path.py
new file mode 100644
index 000000000..e2e040e60
--- /dev/null
+++ b/tests/functional/dht/test_nuke_happy_path.py
@@ -0,0 +1,95 @@
+#  Copyright (C) 2020 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.
+
+from glusto.core import Glusto as g
+from glustolibs.gluster.gluster_base_class import GlusterBaseClass, runs_on
+from glustolibs.gluster.exceptions import ExecutionError
+from glustolibs.gluster.glusterdir import mkdir, get_dir_contents
+from glustolibs.gluster.glusterfile import set_fattr
+from glustolibs.gluster.brick_libs import get_all_bricks
+
+
+@runs_on([['distributed-replicated', 'distributed-arbiter',
+           'distributed-dispersed', 'distributed'], ['glusterfs']])
+class TestNukeHappyPath(GlusterBaseClass):
+
+    def setUp(self):
+
+        self.get_super_method(self, 'setUp')()
+
+        # Creating Volume and mounting the volume
+        ret = self.setup_volume_and_mount_volume([self.mounts[0]])
+        if not ret:
+            raise ExecutionError("Volume creation or mount failed: %s"
+                                 % self.volname)
+
+        # Assign a variable for the first_client
+        self.first_client = self.mounts[0].client_system
+
+    def tearDown(self):
+
+        # Unmounting and cleaning volume
+        ret = self.unmount_volume_and_cleanup_volume([self.mounts[0]])
+        if not ret:
+            raise ExecutionError("Unable to delete volume %s" % self.volname)
+
+        self.get_super_method(self, 'tearDown')()
+
+    def test_nuke_happy_path(self):
+        """
+        Test case:
+        1. Create a distributed volume, start and mount it
+        2. Create 1000 dirs and 1000 files under a directory say 'dir1'
+        3. Set xattr glusterfs.dht.nuke to "test" for dir1
+        4. Validate dir-1 is not seen from mount point
+        5. Validate if the entry is moved to '/brickpath/.glusterfs/landfill'
+           and deleted eventually.
+        """
+        # Create 1000 dirs and 1000 files under a directory say 'dir1'
+        self.dir_1_path = "{}/dir1/".format(self.mounts[0].mountpoint)
+        ret = mkdir(self.first_client, self.dir_1_path)
+        self.assertTrue(ret, "Failed to create dir1 on mount point")
+        cmd = ("cd {};for i in `seq 1 1000`;do mkdir dir$i;touch file$i;done"
+               .format(self.dir_1_path))
+        ret, _, _ = g.run(self.first_client, cmd)
+        self.assertFalse(ret, "I/O failed at dir1 on mount point")
+
+        # Set xattr glusterfs.dht.nuke to "test" for dir1
+        ret = set_fattr(self.first_client, self.dir_1_path,
+                        'glusterfs.dht.nuke', 'test')
+        self.assertTrue(ret, "Failed to set xattr glusterfs.dht.nuke")
+
+        # Validate dir-1 is not seen from mount point
+        ret = get_dir_contents(self.first_client, self.mounts[0].mountpoint)
+        self.assertEqual([], ret,
+                         "UNEXPECTED: Mount point has files ideally it should "
+                         "be empty.")
+
+        # Validate if the entry is moved to '/brickpath/.glusterfs/landfill'
+        # and deleted eventually
+        for brick_path in get_all_bricks(self.mnode, self.volname):
+            node, path = brick_path.split(":")
+            path = "{}/.glusterfs/landfill/*/".format(path)
+            ret = get_dir_contents(node, path)
+            # In case if landfile is already cleaned before checking
+            # stop execution of the loop.
+            if ret is None:
+                g.log.info("Bricks have been already cleaned up.")
+                break
+            self.assertIsNotNone(ret,
+                                 "Files not present in /.glusterfs/landfill"
+                                 " dir")
+        g.log.info("Successully nuked dir1.")