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#!/bin/sh
# Initialize variables
ss_dir=""
base_db_dir=""
ss_name=""
ss="snapshots"
me=`basename $0`
function find_target_table_name()
{
dest_path=$1
keyspace_name=$2
src_table_name=$3
find_in_dir=$dest_path/$keyspace_name
tname_without_uuid=$(echo $src_table_name | cut -d '-' -f 1)
dest_table_name=$(ls -td -- $find_in_dir/$tname_without_uuid-* | head -n 1 | rev | cut -d'/' -f1 | rev)
printf $dest_table_name
}
function print_usage()
{
echo "NAME"
echo " Script to restore Cassandra database from Nuvo/Cain snapshot"
echo "SYNOPSIS"
echo " $me [--help|-h] [--base_db_dir|-b] [--snapshot_dir|-s] [--keyspace|-k] [--tag|-t]"
echo " MUST OPTIONS: base_db_dir, snapshot_dir, keyspace_name"
echo "DESCRIPTION"
echo " --base_db_dir, -b"
echo " Location of running Cassandra database"
echo " --snapshot_dir, -s"
echo " Snapshot location of Cassandra database taken by Nuvo/Cain"
echo " --keyspace, -k"
echo " Name of the keyspace to restore"
echo "EXAMPLE"
echo " $me -b /var/lib/cassandra/data -s /root/data.ss -k DISCOVERY_SERVER -t 1234567"
exit
}
if [ $# -eq 0 ]
then
print_usage
fi
while [[ $# -gt 0 ]]
do
key="$1"
shift
case $key in
-h|--help)
print_usage
;;
-b|--base_db_dir)
base_db_dir="$1"
shift
;;
-s|--snapshot_dir)
ss_dir="$1"
shift
;;
-k|--keyspace)
keyspace_name="$1"
;;
-t|--tag)
tag_name="$1"
;;
--default)
DEFAULT=YES
shift
;;
*)
# unknown option
;;
esac
done
# Validate inputs
if [ "$base_db_dir" = "" ] || [ "$ss_dir" = "" ] || [ "$keyspace_name" = "" ]
then
echo ""
echo ">>>>>>>>>>Not all inputs provided, please check usage >>>>>>>>>>"
echo ""
print_usage
fi
# Remove commit logs from current data dir
#/var/lib/cassandra/commitlog/CommitLog*.log
find $base_db_dir/../ -name "CommitLog*.log" -delete
# Remove *.db from current data dir excluding skipped keyspaces
find $base_db_dir/$keyspace_name -name "*.db" -delete
# Copy snapshots to data dir
echo "----------db files in snapshots--------------"
dirs_to_be_restored=`ls $ss_dir`
for i in ${dirs_to_be_restored}
do
src_path=$ss_dir/$i/snapshots/$tag_name
# Find the destination
table_name=$i
dest_table=$(find_target_table_name $base_db_dir $keyspace_name $table_name)
dest_path=$base_db_dir/$keyspace_name/$dest_table
# Create keyspace/table directory if not exists
#if [ ! -d "$dest_path" ]; then
# mkdir -p $dest_path
#fi
db_files=$(ls $src_path/*.db 2> /dev/null | wc -l)
if [ $db_files -ne 0 ]
then
cp $src_path/*.db $dest_path
if [ $? -ne 0 ]
then
echo "=====ERROR: Unable to restore $src_path/*.db to $dest_path====="
exit 1
fi
echo "=======check $dest_path ==============="
ls $dest_path
fi
done
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