backup charts for cassandra

Issue-ID: OOM-2089

Signed-off-by: Akansha Dua <akansha.dua@amdocs.com>
Change-Id: Ia1086deda37ba6e613afcc6bd064e7bf4ee692b9

1 files changed, 119 insertions, 0 deletions

diff --git a/kubernetes/common/cassandra/resources/restore.sh b/kubernetes/common/cassandra/resources/restore.sh
new file mode 100644
index 0000000000..b9deb32316
--- /dev/null
+++ b/kubernetes/common/cassandra/resources/restore.sh
@@ -0,0 +1,119 @@
+#!/bin/bash
+
+# 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