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#!/bin/sh
# 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.
# Backup postgresql data directory
here=`echo "import os; print os.path.realpath('$0')" | python`; here=`dirname $here`
root=`echo "import os; print os.path.realpath('$1')" | python`
if [ "$2" = "" ]; then
host="localhost"
port="6432"
else
host="$2"
port="$3"
fi
pgsql_prefix=`cat $here/pgsql.prefix`
if [ -f "$root/sqldb/log.conf" ]; then
pgsql_log=`cat $root/sqldb/log.conf`
else
mkdir -p $root/logs
pgsql_log="cat >>$root/logs/postgresql"
fi
mkdir -p $root/sqldb
echo $pgsql_log >$root/sqldb/logger
mkdir -p $root/sqldb/backup
mkdir -p $root/sqldb/archive
# Make sure that only one backup is in progress at a time
if [ -f $root/sqldb/backup/inprogress ]; then
exit 0
fi
touch $root/sqldb/backup/inprogress
# Backup
stamp=`date +%Y%m%d%H%M%S`
$pgsql_prefix/bin/psql -h $host -p $port -c "SELECT pg_start_backup('$stamp', true)" db 2>&1 | sh $root/sqldb/logger
uname=`uname -s`
if [ $uname = "Darwin" ]; then
tar=gnutar
else
tar=tar
fi
$tar -C $root/sqldb --exclude data/postmaster.pid --exclude data/postmaster.opts --exclude data/pg_xlog --ignore-failed-read -czf $root/sqldb/backup/$stamp.backup.tar.gz data
rc=$?
if [ "$rc" = "0" ]; then
mv $root/sqldb/backup/$stamp.backup.tar.gz $root/sqldb/archive/$stamp.backup.tar.gz
fi
$pgsql_prefix/bin/psql -h $host -p $port -c "SELECT pg_stop_backup()" db 2>&1 | sh $root/sqldb/logger
if [ "$rc" != "0" ]; then
rm -f $root/sqldb/backup/inprogress
exit $rc
fi
# Clean obsolete backup and WAL files
$here/pgsql-clean-archive $root
rm -f $root/sqldb/backup/inprogress
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