#!/bin/bash

make_master_backup() {
    rm -f $work_dir/omnipitr/tmp/omnipitr-helper-dst-pipe.out
    $omnipitr_dir/bin/omnipitr-backup-master -dg MD5,SHA-1 -p 54001 -t $work_dir/omnipitr/tmp/backup-master/ -D $work_dir/data-master/ -x $work_dir/omnipitr/backup-archive/ -dp gzip=$test_dir/test-lib/helper-dst-pipe.sh -dl gzip=$work_dir/omnipitr/backup/ -f "master-__FILETYPE__.tar__CEXT__" -l $work_dir/omnipitr/log -v

    if [[ ! -e $work_dir/omnipitr/backup/master-data.tar.gz ]]
    then
        echo "$work_dir/omnipitr/backup/master-data.tar.gz does not exist?!" >&2
        exit 1
    fi

    if [[ ! -e $work_dir/omnipitr/backup/master-xlog.tar.gz ]]
    then
        echo "$work_dir/omnipitr/backup/master-xlog.tar.gz does not exist?!" >&2
        exit 1
    fi

    data_size="$( du -k $work_dir/omnipitr/backup/master-data.tar.gz | awk '{print $1}')"
    xlog_size="$( du -k $work_dir/omnipitr/backup/master-xlog.tar.gz | awk '{print $1}')"

    if (( $data_size < 1024 ))
    then
        echo "$work_dir/omnipitr/backup/master-data.tar.gz exists but looks too small to be sensible!" >&2
        exit 1
    fi
    if (( $xlog_size < 8 ))
    then
        echo "$work_dir/omnipitr/backup/master-xlog.tar.gz exists but looks too small to be sensible!" >&2
        exit 1
    fi

    different_md5s="$( cat $work_dir/omnipitr/tmp/omnipitr-helper-dst-pipe.out $work_dir/omnipitr/backup/master-MD5.tar.gz | awk '$2~/data|xlog/' | tr '*' ' ' | sort | uniq  | wc -l )"
    if (( $different_md5s != 2 ))
    then
        echo "MD5s are not the same in checksum file, and in file generated by dst-pipe?!" >&2
        exit 1
    fi

    # Rotate xlog to make sure there is something in replication archive.
    echo "create table xxx_tmp as select generate_series(1,10) as i;
        checkpoint;
        select pg_switch_xlog();
        drop table xxx_tmp;
        checkpoint;
    " | psql -p 54001 &> /dev/null

}