#!/bin/bash
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# Shell script to take a snapshot of a Solr Lucene collection.
orig_dir=$(pwd)
cd ${0%/*}/..
solr_root=$(pwd)
cd ${orig_dir}
unset data_dir user verbose debug
. ${solr_root}/bin/scripts-util
# set up variables
prog=${0##*/}
log=${solr_root}/logs/${prog}.log
# define usage string
USAGE="\
usage: $prog [-d dir] [-u username] [-v] [-V] [-c]
-d specify directory holding index data
-u specify user to sudo to before running script
-v increase verbosity
-V output debugging info
-c only take snapshot if different than previous
"
# parse args
while getopts d:u:vVc OPTION
do
case $OPTION in
d)
data_dir="$OPTARG"
;;
u)
user="$OPTARG"
;;
v)
verbose="v"
;;
V)
debug="V"
;;
c)
check=1
;;
*)
echo "$USAGE"
exit 1
esac
done
[[ -n $debug ]] && set -x
fixUser "$@"
dataDir
setStartTime
logMessage started by $oldwhoami
logMessage command: $0 $@
snap_name=snapshot.`date +"%Y%m%d%H%M%S"`
name=${data_dir}/${snap_name}
temp=${data_dir}/temp-${snap_name}
if [[ -d ${name} ]]
then
logMessage snapshot directory ${name} already exists
logExit aborted 1
fi
if [[ -d ${temp} ]]
then
logMessage snapshoting of ${name} in progress
logExit aborted 1
fi
if [[ ${check} ]]
then
previous=`find ${data_dir} -name snapshot.\* | sort -r | head -1`
if [[ -d ${previous} ]]
then
differences=`diff -q ${data_dir}/index ${previous} | wc -l`
if [[ ${differences} -lt 1 ]]
then
logMessage Snap would be same as last, exiting
logExit aborted 1
fi
fi
fi
# clean up after INT/TERM
trap 'echo cleaning up, please wait ...;/bin/rm -rf ${name} ${temp};logExit aborted 13' INT TERM
logMessage taking snapshot ${name}
# take a snapshot using hard links into temporary location
# then move it into place atomically
if [[ "${OS}" == "SunOS" || "${OS}" == "Darwin" || "${OS}" == "FreeBSD" ]]
then
orig_dir=$(pwd)
mkdir ${temp}
cd ${data_dir}/index
find . -print|cpio -pdlmu ${temp} 1>/dev/null 2>&1
cd ${orig_dir}
else
cp -lr ${data_dir}/index ${temp}
fi
mv ${temp} ${name}
logExit ended 0