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+# 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.
+
+"""
+Description:
+ Test Glusterfind when brick is down
+"""
+
+from random import choice
+from time import sleep
+from glusto.core import Glusto as g
+from glustolibs.gluster.exceptions import ExecutionError
+from glustolibs.gluster.gluster_base_class import GlusterBaseClass, runs_on
+from glustolibs.gluster.volume_ops import set_volume_options
+from glustolibs.gluster.peer_ops import wait_for_peers_to_connect
+from glustolibs.gluster.lib_utils import list_files
+from glustolibs.gluster.volume_libs import volume_start
+from glustolibs.gluster.glusterfile import (
+ file_exists,
+ remove_file,
+ check_if_pattern_in_file)
+from glustolibs.gluster.glusterfind_ops import (
+ gfind_create,
+ gfind_list,
+ gfind_pre,
+ gfind_post,
+ gfind_delete)
+from glustolibs.gluster.brick_libs import (
+ get_all_bricks,
+ bring_bricks_offline)
+
+
+@runs_on([["replicated", "distributed-replicated", "dispersed",
+ "distributed", "distributed-dispersed"],
+ ["glusterfs"]])
+class TestGlusterFindBrickDown(GlusterBaseClass):
+ """
+ Test glusterfind operation when a brick is down.
+ """
+
+ def setUp(self):
+ """
+ setup volume and mount volume
+ Initiate necessary variables
+ """
+
+ # calling GlusterBaseClass setUp
+ self.get_super_method(self, 'setUp')()
+
+ self.file_limit = 0
+
+ # Setup Volume and Mount 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("Successful in Setup Volume %s", self.volname)
+ self.session = "test-session-%s" % self.volname
+ self.outfiles = [("/tmp/test-outfile-%s-%s.txt"
+ % (self.volname, i))for i in range(0, 2)]
+
+ # Set the changelog rollover-time to 1 second
+ # This needs to be done in order for glusterfind to keep checking
+ # for changes in the mount point
+ option = {'changelog.rollover-time': '1'}
+ ret = set_volume_options(self.mnode, self.volname, option)
+ if not ret:
+ raise ExecutionError("Failed to set the volume option %s for %s"
+ % (option, self.volname))
+ g.log.info("Successfully set the volume option for the volume %s",
+ self.volname)
+
+ def _perform_io_and_validate_presence_of_files(self):
+ """
+ Function to perform the IO and validate the presence of files.
+ """
+ self.file_limit += 10
+ # Starting IO on the mounts
+ cmd = ("cd %s ; touch file{%d..%d}" % (self.mounts[0].mountpoint,
+ self.file_limit-10,
+ self.file_limit))
+
+ ret, _, _ = g.run(self.mounts[0].client_system, cmd)
+ self.assertEqual(ret, 0, "Failed to create files on mountpoint")
+ g.log.info("Files created successfully on mountpoint")
+
+ # Gather the list of files from the mount point
+ files = list_files(self.mounts[0].client_system,
+ self.mounts[0].mountpoint)
+ self.assertIsNotNone(files, "Failed to get the list of files")
+ g.log.info("Successfully gathered the list of files from mount point")
+
+ # Check if the files exist
+ for filename in files:
+ ret = file_exists(self.mounts[0].client_system, filename)
+ self.assertTrue(ret, ("Unexpected: File '%s' does not exist"
+ % filename))
+ g.log.info("Successfully validated existence of '%s'", filename)
+
+ def _perform_glusterfind_pre_and_validate_outfile(self):
+ """
+ Function to perform glusterfind pre and validate outfile
+ """
+ # Perform glusterfind pre for the session
+ ret, _, _ = gfind_pre(self.mnode, self.volname, self.session,
+ self.outfiles[0], full=True, noencode=True,
+ debug=True)
+ self.assertEqual(ret, 0, ("Failed to perform glusterfind pre"))
+ g.log.info("Successfully performed glusterfind pre")
+
+ # Check if the outfile exists
+ ret = file_exists(self.mnode, self.outfiles[0])
+ self.assertTrue(ret, ("Unexpected: File '%s' does not exist"
+ % self.outfiles[0]))
+ g.log.info("Successfully validated existence of '%s'",
+ self.outfiles[0])
+
+ # Check if all the files are listed in the outfile
+ for i in range(1, self.file_limit+1):
+ ret = check_if_pattern_in_file(self.mnode, "file%s" % i,
+ self.outfiles[0])
+ self.assertEqual(ret, 0, ("File 'file%s' not listed in %s"
+ % (i, self.outfiles[0])))
+ g.log.info("File 'file%s' listed in %s", i, self.outfiles[0])
+
+ def test_gfind_when_brick_down(self):
+ """
+ Verifying the glusterfind functionality when a brick is down.
+
+ 1. Create a volume
+ 2. Create a session on the volume
+ 3. Create various files from mount point
+ 4. Bring down brick process on one of the node
+ 5. Perform glusterfind pre
+ 6. Perform glusterfind post
+ 7. Check the contents of outfile
+ """
+
+ # pylint: disable=too-many-statements
+ # Create a session for the volume
+ ret, _, _ = gfind_create(self.mnode, self.volname, self.session)
+ self.assertEqual(ret, 0, ("Unexpected: Creation of a session for the "
+ "volume %s failed" % self.volname))
+ g.log.info("Successfully created a session for the volume %s",
+ self.volname)
+
+ # Perform glusterfind list to check if session exists
+ _, out, _ = gfind_list(self.mnode, volname=self.volname,
+ sessname=self.session)
+ self.assertNotEqual(out, "No sessions found.",
+ "Failed to list the glusterfind session")
+ g.log.info("Successfully listed the glusterfind session")
+
+ self._perform_io_and_validate_presence_of_files()
+
+ # Wait for changelog to get updated
+ sleep(2)
+
+ # Bring one of the brick down.
+ brick_list = get_all_bricks(self.mnode, self.volname)
+ ret = bring_bricks_offline(self.volname, choice(brick_list))
+ self.assertTrue(ret, "Failed to bring down the brick.")
+ g.log.info("Succesfully brought down one brick.")
+
+ self._perform_glusterfind_pre_and_validate_outfile()
+
+ # Perform glusterfind post for the session
+ ret, _, _ = gfind_post(self.mnode, self.volname, self.session)
+ self.assertEqual(ret, 0, ("Failed to perform glusterfind post"))
+ g.log.info("Successfully performed glusterfind post")
+
+ # Bring the brick process up.
+ ret = volume_start(self.mnode, self.volname, force=True)
+ self.assertTrue(ret, "Failed to start the volume.")
+ g.log.info("Successfully started the volume.")
+
+ def tearDown(self):
+ """
+ tearDown for every test
+ Clean up and unmount the volume
+ """
+ # calling GlusterBaseClass tearDown
+ self.get_super_method(self, 'tearDown')()
+
+ # Delete the glusterfind sessions
+ ret, _, _ = gfind_delete(self.mnode, self.volname, self.session)
+ if ret:
+ raise ExecutionError("Failed to delete session %s" % self.session)
+ g.log.info("Successfully deleted session %s", self.session)
+
+ # Remove the outfiles created during 'glusterfind pre'
+ for out in self.outfiles:
+ ret = remove_file(self.mnode, out, force=True)
+ if not ret:
+ raise ExecutionError("Failed to remove the outfile %s" % out)
+ g.log.info("Successfully removed the outfiles")
+
+ # Wait for the peers to be connected.
+ ret = wait_for_peers_to_connect(self.mnode, self.servers, 100)
+ if not ret:
+ raise ExecutionError("Peers are not in connected state.")
+
+ # Cleanup the volume
+ ret = self.unmount_volume_and_cleanup_volume(mounts=self.mounts)
+ if not ret:
+ raise ExecutionError("Failed to Cleanup Volume")
+ g.log.info("Successful in Cleanup Volume")