Create gitolite repos snapshots

backup_repos.sh

#!/bin/bash

DATE=$(date +%Y-%m-%d)
DEST_BACKUP_PREFIX="repositories"
BACKUP_NAME="${DEST_BACKUP_PREFIX}_${DATE}.tar"

#echo $DATE $DEST_BACKUP_PREFIX 
#echo $BACKUP_NAME

SOURCE="/home/git/repositories"

BACKUP_PATH="/mnt/ainas.iscsi-storage.GIT-Backup-01/backups"
BACKUP_PATH_DAILY="$BACKUP_PATH/daily"
BACKUP_PATH_WEEKLY="$BACKUP_PATH/weekly"
BACKUP_PATH_MONTHLY="$BACKUP_PATH/monthly"

#echo $BACKUP_PATH_DAILY $BACKUP_PATH_WEEKLY $BACKUP_PATH_MONTHLY

MAX_DAILY_BACKUPS=5
MAX_MONTHLY_BACKUPS=12
MAX_WEEKLY_BACKUPS=4

#echo $MAX_DAILY_BACKUPS $MAX_MONTHLY_BACKUPS $MAX_WEEKLY_BACKUPS

GITOLITE="/home/git/gitolite/src/gitolite"


mkdir -p "$BACKUP_PATH_DAILY"
mkdir -p "$BACKUP_PATH_WEEKLY"
mkdir -p "$BACKUP_PATH_MONTHLY"



function cleanup_daily {
	# 2>/dev/null will supress stderr on no matches
	DAILY_COUNT=$(ls ${BACKUP_PATH_DAILY}/${DEST_BACKUP_PREFIX}_* 2>/dev/null | wc -l)
	let "TO_DELETE = $DAILY_COUNT - $MAX_DAILY_BACKUPS"
	#echo $TO_DELETE
	if [ "$TO_DELETE" -gt 0 ]
	then		
		#ls ${BACKUP_PATH_DAILY}/${DEST_BACKUP_PREFIX}_* 2>/dev/null | sort -r | tail -n ${TO_DELETE}	
		TO_DELETE_FILES=$(ls ${BACKUP_PATH_DAILY}/${DEST_BACKUP_PREFIX}_* 2>/dev/null | sort -r | tail -n ${TO_DELETE})
		echo deleting files... $TO_DELETE_FILES
		echo $TO_DELETE_FILES | xargs rm		
	fi
}

function backup_daily {
	$GITOLITE writable @all off "Git backup in progress, try later"
	echo creating "$BACKUP_PATH_DAILY/$BACKUP_NAME" from "$SOURCE"
	tar -cf "$BACKUP_PATH_DAILY/$BACKUP_NAME" "$SOURCE"
	$GITOLITE writable @all on
	cleanup_daily
}


function cleanup_weekly {
	# 2>/dev/null will supress stderr on no matches
	WEEKLY_COUNT=$(ls ${BACKUP_PATH_WEEKLY}/${DEST_BACKUP_PREFIX}_* 2>/dev/null | wc -l)
	let "TO_DELETE = $WEEKLY_COUNT - $MAX_WEEKLY_BACKUPS"
	#echo $TO_DELETE
	if [ "$TO_DELETE" -gt 0 ]
	then		
		TO_DELETE_FILES=$(ls ${BACKUP_PATH_WEEKLY}/${DEST_BACKUP_PREFIX}_* 2>/dev/null | sort -r | tail -n ${TO_DELETE})
		echo deleting files... $TO_DELETE_FILES
		echo $TO_DELETE_FILES | xargs rm		
	fi
}

function backup_weekly {

	if ! [[ $(date +%d) = "01" || $(date +%d) = "08" || $(date +%d) = "15" || $(date +%d) = "22" ]]
	then
		return
	fi
	
	$GITOLITE writable @all off "Git backup in progress, try later"
	echo creating "$BACKUP_PATH_WEEKLY/$BACKUP_NAME" from "$SOURCE"
	tar -cf "$BACKUP_PATH_WEEKLY/$BACKUP_NAME" "$SOURCE"
	$GITOLITE writable @all on
	cleanup_weekly
}

function cleanup_monthly {
	# 2>/dev/null will supress stderr on no matches
	MONTHLY_COUNT=$(ls ${BACKUP_PATH_MONTHLY}/${DEST_BACKUP_PREFIX}_* 2>/dev/null | wc -l)
	let "TO_DELETE = $MONTHLY_COUNT - $MAX_MONTHLY_BACKUPS"
	#echo $TO_DELETE
	if [ "$TO_DELETE" -gt 0 ]
	then		
		TO_DELETE_FILES=$(ls ${BACKUP_PATH_MONTHLY}/${DEST_BACKUP_PREFIX}_* 2>/dev/null | sort -r | tail -n ${TO_DELETE})
		echo deleting files... $TO_DELETE_FILES
		#echo $TO_DELETE_FILES | xargs rm		
	fi
}

function backup_monthly {
	
	if ! [[ $(date +%d) = "05" ]]
	then
		return
	fi
	
	$GITOLITE writable @all off "Git backup in progress, try later"
	echo creating "$BACKUP_PATH_MONTHLY/$BACKUP_NAME" from "$SOURCE"
	tar -cf "$BACKUP_PATH_MONTHLY/$BACKUP_NAME" "$SOURCE"
	$GITOLITE writable @all on
	cleanup_monthly
}

backup_daily
backup_weekly
backup_monthly