function volinfo_field()
{
    local vol=$1;
    local field=$2;

    $CLI volume info $vol | grep "^$field: " | sed 's/.*: //';
}


function brick_count()
{
    local vol=$1;

    $CLI volume info $vol | egrep "^Brick[0-9]+: " | wc -l;
}

function online_brick_count ()
{
    pgrep glusterfsd | wc -l
}

function volume_option()
{
        local vol=$1
        local key=$2
        $CLI volume info $vol | egrep "^$key: " | cut -f2 -d' ';
}

function rebalance_status_field {
        #The rebalance status can be upto 3 words, (ex:'fix-layout in progress'), hence the awk-print $7 thru $9.
        #But if the status is less than 3 words, it also prints the next field i.e the run_time_in_secs.(ex:'completed 3.00').
        #So we trim the numbers out with  `tr`. Finally remove the trailing white spaces with sed. What we get is one of the
        #strings in the 'cli_vol_task_status_str' char array of cli-rpc-ops.c

        $CLI volume rebalance $1 status | awk '{print $7,$8,$9}' |sed -n 3p |tr -d '[^0-9+\.]'|sed 's/ *$//g'
}

function remove_brick_status_completed_field {
        local vol=$1
        local brick_list=$2
        $CLI volume remove-brick $vol $brick_list status | awk '{print $7}' | sed -n 3p
}

function get_mount_process_pid {
        local vol=$1
        ps auxww | grep glusterfs | grep -E "volfile-id[ =]/?$vol " | awk '{print $2}' | head -1
}

function get_nfs_pid ()
{
        ps auxww | grep "volfile-id\ gluster\/nfs" | awk '{print $2}' | head -1
}

function read_nfs_pidfile ()
{
        echo `cat $GLUSTERD_WORKDIR/nfs/run/nfs.pid`
}

function cleanup_statedump {
       pid=$1
       rm -f $statedumpdir/*$pid.dump.*
       #.vimrc friendly comment */
}

function generate_statedump {
        local fpath=""
        pid=$1
        #remove old stale statedumps
        cleanup_statedump $pid
        kill -USR1 $pid
        #Wait till the statedump is generated
        sleep 1
        fname=$(ls $statedumpdir | grep -E "\.$pid\.dump\.")
        echo $statedumpdir/$fname
}

function generate_mount_statedump {
        local vol=$1
        generate_statedump $(get_mount_process_pid $vol)
}

function cleanup_mount_statedump {
        local vol=$1
        cleanup_statedump $(get_mount_process_pid $vol)
}

function snap_client_connected_status {
         local vol=$1
         local fpath=$(generate_mount_statedump $vol)
         up=$(grep -a -A2 xlator.protocol.client.$vol-snapd-client.priv $fpath | tail -1 | cut -f 2 -d'=')
         rm -f $fpath
         echo "$up"
}

function _afr_child_up_status {
        local vol=$1
        #brick_id is (brick-num in volume info - 1)
        local brick_id=$2
        local gen_state_dump=$3
        local fpath=$($gen_state_dump $vol)
        up=$(grep -a -B1 trusted.afr.$vol-client-$brick_id $fpath | head -1 | cut -f2 -d'=')
        rm -f $fpath
        echo "$up"
}

function afr_child_up_status_meta {
        local mnt=$1
        local repl=$2
        local child=$3
        grep "child_up\[$child\]" $mnt/.meta/graphs/active/$repl/private | awk '{print $3}'
}

function afr_child_up_status {
        local vol=$1
        #brick_id is (brick-num in volume info - 1)
        local brick_id=$2
        _afr_child_up_status $vol $brick_id generate_mount_statedump
}

function ec_get_info {
        local vol=$1
        local dist_id=$2
        local key=$3
        local fpath=$(generate_mount_statedump $vol)
        local value=$(sed -n "/^\[cluster\/disperse\.$vol-disperse-$dist_id\]/,/^\[/{s/^$key=\(.*\)/\1/p;}" $fpath | head -1)
        rm -f $fpath
        echo "$value"
}

function ec_child_up_status {
        local vol=$1
        local dist_id=$2
        local brick_id=$(($3 + 1))
        local mask=$(ec_get_info $vol $dist_id "childs_up_mask")
        echo "${mask: -$brick_id:1}"
}

function ec_child_up_count {
        local vol=$1
        local dist_id=$2
        ec_get_info $vol $dist_id "childs_up"
}

function get_shd_process_pid {
        ps auxww | grep glusterfs | grep -E "glustershd/run/glustershd.pid" | awk '{print $2}' | head -1
}

function generate_shd_statedump {
        generate_statedump $(get_shd_process_pid)
}

function generate_nfs_statedump {
        generate_statedump $(get_nfs_pid)
}

function generate_brick_statedump {
        local vol=$1
        local host=$2
        local brick=$3
        generate_statedump $(get_brick_pid $vol $host $brick)
}

function afr_child_up_status_in_shd {
        local vol=$1
        #brick_id is (brick-num in volume info - 1)
        local brick_id=$2
        _afr_child_up_status $vol $brick_id generate_shd_statedump
}

function afr_child_up_status_in_nfs {
        local vol=$1
        #brick_id is (brick-num in volume info - 1)
        local brick_id=$2
        _afr_child_up_status $vol $brick_id generate_nfs_statedump
}

function nfs_up_status {
        gluster volume status | grep "NFS Server" | awk '{print $7}'
}

function glustershd_up_status {
        gluster volume status | grep "Self-heal Daemon" | awk '{print $7}'
}

function quotad_up_status {
        gluster volume status | grep "Quota Daemon" | awk '{print $7}'
}

function get_brick_pid {
        local vol=$1
        local host=$2
        local brick=$3
        local brick_hiphenated=$(echo $brick | tr '/' '-')
        echo `cat $GLUSTERD_WORKDIR/vols/$vol/run/${host}${brick_hiphenated}.pid`
}

function kill_brick {
        local vol=$1
        local host=$2
        local brick=$3
        kill -9 $(get_brick_pid $vol $host $brick)
}

function check_option_help_presence {
        local option=$1
        $CLI volume set help | grep "^Option:" | grep -w $option
}

function afr_get_changelog_xattr {
        local file=$1
        local xkey=$2
        local xval=$(getfattr -n $xkey -e hex $file 2>/dev/null | grep "$xkey" | cut -f2 -d'=')
        if [ -z $xval ]; then
                xval="0x000000000000000000000000"
        fi
        echo $xval
}

function get_pending_heal_count {
        local vol=$1
        gluster volume heal $vol info | grep "Number of entries" | awk '{ sum+=$4} END {print sum}'
}

function afr_get_split_brain_count {
        local vol=$1
        gluster volume heal $vol info split-brain | grep "Number of entries in split-brain" | awk '{ sum+=$6} END {print sum}'
}

function afr_get_index_path {
        local brick_path=$1
        echo "$brick_path/.glusterfs/indices/xattrop"
}

function afr_get_num_indices_in_brick {
        local brick_path=$1
        echo $(ls $(afr_get_index_path $brick_path) | grep -v xattrop | wc -l)
}

function gf_get_gfid_xattr {
        file=$1
        getfattr -n trusted.gfid -e hex $file 2>/dev/null | grep "trusted.gfid" | cut -f2 -d'='
}

function gf_gfid_xattr_to_str {
        xval=$1
        echo "${xval:2:8}-${xval:10:4}-${xval:14:4}-${xval:18:4}-${xval:22:12}"
}

function get_text_xattr {
        local key=$1
        local path=$2
        getfattr -d -m. -e text $path 2>/dev/null | grep -a $key | cut -f2 -d'='
}

function gf_check_file_opened_in_brick {
        vol=$1
        host=$2
        brick=$3
        realpath=$4
        ls -l /proc/$(get_brick_pid $vol $host $brick)/fd | grep "${realpath}$" 2>&1 > /dev/null
        if [ $? -eq 0 ]; then
                echo "Y"
        else
                echo "N"
        fi
}

function gf_get_gfid_backend_file_path {
        brickpath=$1
        filepath_in_brick=$2
        gfid=$(gf_get_gfid_xattr "$brickpath/$filepath_in_brick")
        gfidstr=$(gf_gfid_xattr_to_str $gfid)
        echo "$brickpath/.glusterfs/${gfidstr:0:2}/${gfidstr:2:2}/$gfidstr"
}

function gf_rm_file_and_gfid_link {
        brickpath=$1
        filepath_in_brick=$2
        rm -f $(gf_get_gfid_backend_file_path $brickpath $filepath_in_brick)
        rm -f "$brickpath/$filepath_in_brick"
}


function gd_is_replace_brick_completed {
        local host=$1
        local vol=$2
        local src_brick=$3
        local dst_brick=$4
        $CLI volume replace-brick $vol $src_brick $dst_brick status | grep -i "Migration complete"
        if [ $? -eq 0 ]; then
                echo "Y"
        else
                echo "N"
        fi
}

function dht_get_layout {
        local my_xa=trusted.glusterfs.dht
        getfattr -d -e hex -n $my_xa $1 2> /dev/null | grep "$my_xa=" | cut -d= -f2
}

function afr_get_specific_changelog_xattr ()
{
        local path=$1
        local key=$2
        local type=$3
        local specific_changelog=""

        changelog_xattr=$(afr_get_changelog_xattr "$path" "$key")
        if [ "$type" == "data" ]; then
                specific_changelog=${changelog_xattr:2:8}
        elif [ "$type" == "metadata" ]; then
                specific_changelog=${changelog_xattr:10:8}
        elif [ "$type" == "entry" ]; then
                specific_changelog=${changelog_xattr:18:8}
        else
                specific_changlog="error"
        fi

        echo $specific_changelog
}
##
 # query pathinfo xattr and extract POSIX pathname(s)
 ##
function get_backend_paths {
       local path=$1

       getfattr -m . -n trusted.glusterfs.pathinfo $path | tr ' ' '\n' | sed -n 's/<POSIX.*:.*:\(.*\)>.*/\1/p'
}

#Gets the xattr value in hex, also removed 0x in front of the value
function get_hex_xattr {
        local key=$1
        local path=$2
        getfattr -d -m. -e hex $2 2>/dev/null | grep $1 | cut -f2 -d'=' | cut -f2 -d'x'
}

function cumulative_stat_count {
    echo "$1" | grep "Cumulative Stats:" | wc -l
}

function incremental_stat_count {
    echo "$1" | grep "Interval$2Stats:" | wc -l
}

function cleared_stat_count {
    echo "$1" | grep "Cleared stats." | wc -l
}

function data_read_count {
    echo "$1" | grep "Data Read:$2bytes" | wc -l
}

function data_written_count {
    echo "$1" | grep "Data Written:$2bytes" | wc -l
}

function has_holes {
        if [ $((`stat -c '%b*%B-%s' $1`)) -lt 0 ];
        then
                echo "1"
        else
                echo "0"
        fi
}

function do_volume_operations() {
        local operation=$1
        local count=$2
        local force=$3

        local pids=()
        local cli
        local v

         for i in `seq 1 $count`; do
                cli="CLI_$i"
                v="V`expr $i - 1`"
                ${!cli} volume $operation ${!v} $force &
                pids[$i]=$!
        done

        for i in `seq 1 $count`; do
                wait ${pids[$i]}
        done
}

function start_volumes() {
        do_volume_operations start $1
}

function stop_volumes() {
        do_volume_operations stop $1
}

function start_force_volumes() {
        do_volume_operations start $1 force
}

function stop_force_volumes() {
        do_volume_operations stop $1 force
}

function delete_volumes() {
        do_volume_operations delete $1
}

function volume_exists() {
        $CLI volume info $1 > /dev/null 2>&1
	if [ $? -eq 0 ]; then
		echo "Y"
	else
		echo "N"
	fi
}

function killall_gluster() {
        pkill gluster
        sleep 1
}

function afr_get_index_count {
        local brick=$1
        ls $1/.glusterfs/indices/xattrop | grep -v xattrop | wc -l
}

function landfill_entry_count {
        local brick=$1
        ls $brick/.glusterfs/landfill | wc -l
}

function path_exists {
        stat $1
        if [ $? -eq 0 ]; then echo "Y"; else echo "N"; fi
}

function force_umount {
        ${UMOUNT_F} $*
        if [ $? -eq 0 ]; then echo "Y"; else echo "N"; fi
}

function assign_gfid {
        local gfid=$1
        local file=$2
        setfattr -n trusted.gfid -v $1 $2
}

function get_random_gfid {
        echo "0x"$(uuidgen | awk -F '-' 'BEGIN {OFS=""} {print $1,$2,$3,$4,$5}')
}

function volgen_volume_exists {
        local volfile="$1"
        local xl_vol="$2"
        local xl_type="$3"
        local xl_feature="$4"
        xl=$(sed -e "/./{H;\$!d;}" -e "x;/volume $xl_vol/!d;/type $xl_type\/$xl_feature/!d" $volfile)
        if [ -z "$xl" ];
        then
                echo "N"
        else
                echo "Y"
        fi
}

function volgen_volume_option {
        local volfile="$1"
        local xl_vol="$2"
        local xl_type="$3"
        local xl_feature="$4"
        local xl_option="$5"
        sed -e "/./{H;\$!d;}" -e "x;/volume $xl_vol/!d;/type $xl_type\/$xl_feature/!d;/option $xl_option/!d" $volfile | grep " $xl_option " | awk '{print $3}'
}

function mount_get_option_value {
        local m=$1
        local subvol=$2
        local key=$3

        grep -w "$3" $m/.meta/graphs/active/$subvol/private | awk '{print $3}'
}

function get_volume_mark {
        getfattr -n trusted.glusterfs.volume-mark -ehex $1 | sed -n 's/^trusted.glusterfs.volume-mark=0x//p' | cut -b5-36 | sed 's/\([a-f0-9]\{8\}\)\([a-f0-9]\{4\}\)\([a-f0-9]\{4\}\)\([a-f0-9]\{4\}\)/\1-\2-\3-\4-/'
}

# setup geo-rep in a single a node.

function setup_georep {

    $CLI volume create $GMV0 replica 2  $H0:$B0/${GMV0}{1,2,3,4};

    $CLI volume start $GMV0

    $CLI volume create $GSV0 replica 2  $H0:$B0/${GSV0}{1,2,3,4};

    $CLI volume start $GSV0

    $CLI system:: execute gsec_create

    $CLI volume geo-rep $GMV0 $H0::$GSV0 create push-pem

    $CLI volume geo-rep $GMV0 $H0::$GSV0 start

    sleep 80 # after start geo-rep takes a minute to get stable

}


# stop and delete geo-rep session

function cleanup_georep {

    $CLI volume geo-rep $GMV0 $H0::$GSV0 stop

    $CLI volume geo-rep $GMV0 $H0::$GSV0 delete
}

function num_graphs
{
    local mountpoint=$1
    echo `ls $mountpoint/.meta/graphs/ | grep -v active | wc -l`
}

function get_aux()
{
##Check if a auxiliary mount is there
df -h 2>&1 | grep "/var/run/gluster/$V0" -

if [ $? -eq 0 ]
then
        echo "0"
else
        echo "1"
fi
}

function get_bitd_count {
        ps auxww | grep glusterfs | grep bitd.pid | grep -v grep | wc -l
}

function get_scrubd_count {
        ps auxww | grep glusterfs | grep scrub.pid | grep -v grep | wc -l
}

function get_quotad_count {
        ps auxww | grep glusterfs | grep quotad.pid | grep -v grep | wc -l
}

function drop_cache() {
	case $OSTYPE in
	Linux)
		echo 3 > /proc/sys/vm/drop_caches
		;;
	*)
		# fail but flush caches
		( cd $1 && umount $1 2>/dev/null )
		;;
	esac
}

function quota_list_field () {
        local QUOTA_PATH=$1
        local FIELD=$2
        local awk_arg="{print \$$FIELD}"

        $CLI volume quota $V0 list $QUOTA_PATH | grep $QUOTA_PATH | awk "$awk_arg"
}

function quota_object_list_field () {
        local QUOTA_PATH=$1
        local FIELD=$2
        local awk_arg="{print \$$FIELD}"

        $CLI volume quota $V0 list-objects $QUOTA_PATH | grep $QUOTA_PATH | awk "$awk_arg"
}

function quotausage()
{
        quota_list_field $1 4
}

function quota_hard_limit()
{
        quota_list_field $1 2
}

function quota_soft_limit()
{
        quota_list_field $1 3
}

function quota_sl_exceeded()
{
        quota_list_field $1 6
}

function quota_hl_exceeded()
{
        quota_list_field $1 7

}

function get_nfs_count {
        ps auxww | grep glusterfs | grep nfs.pid | grep -v grep | wc -l
}

function get_snapd_count {
        ps auxww | grep glusterfs | grep snapd.pid | grep -v grep | wc -l
}