Cassandra snapshot to S3

#!/bin/bash

#This will lead to the script stopping when the first command fails.
set -eux

# Cassandra snapshot to S3
# author: clj@leicht-thruesen.com
# date: 19.01.2016
# updated: 21.01.2016

TODAYS_DATE=`date "+%d%m%Y"`
PATH_TO_CASSANDRA_DATA="/var/lib/cassandra/data"
PATH_TO_TEMPORAL_DIRECTORY="/tmp/cassandra_snapshots" 

#remove old snapshot
clearSnapshot() {
    nodetool clearsnapshot

	if [ "$(ls -A ${PATH_TO_TEMPORAL_DIRECTORY}/)" ]; then
		echo "Not Empty"
		rm -r --preserve-root ${PATH_TO_TEMPORAL_DIRECTORY}/*
	else
		echo "Empty"
	fi
}

#create backup
takeSnapshot() {
	clearSnapshot
	
    nodetool snapshot -t backup_$TODAYS_DATE keyspace

	_SNAPSHOT_DIR_LIST=`find $PATH_TO_CASSANDRA_DATA -type d -name snapshots|awk '{gsub("'$PATH_TO_CASSANDRA_DATA'", "");print}' > snapshot_dir_list`

	for i in `cat snapshot_dir_list`
	do
		if [ -d $PATH_TO_TEMPORAL_DIRECTORY/$i ]
		then
			echo "$i directory exist"
		else
			mkdir -p $PATH_TO_TEMPORAL_DIRECTORY/$i
		fi
	done

	for SNP_VAR in `find $PATH_TO_CASSANDRA_DATA -name "backup_$TODAYS_DATE"`; do
		## Triming _DATA_DIR
		_SNP_PATH_TRIM=`echo $SNP_VAR|awk '{gsub("'$PATH_TO_CASSANDRA_DATA'", "");print}'`
		mv -v "$SNP_VAR" "$PATH_TO_TEMPORAL_DIRECTORY/$_SNP_PATH_TRIM";
	done
     
	#Compress the backup directory
    tar -cvzf ${PATH_TO_TEMPORAL_DIRECTORY}/backup_$TODAYS_DATE.tar.gz ${PATH_TO_TEMPORAL_DIRECTORY}/keyspace

	copySnapshotToS3
	backupSucceeded
	clearSnapshot
}

copySnapshotToS3() {
	s3cmd sync ${PATH_TO_TEMPORAL_DIRECTORY}/backup_$TODAYS_DATE.tar.gz s3://node_name
}

backupSucceeded() {
	wget --spider --no-check-certificate url
}

takeSnapshot