#!/bin/sh

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#  to you under the Apache License, Version 2.0 (the
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#  
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# PostgreSQL archive command
here=`echo "import os; print os.path.realpath('$0')" | python`; here=`dirname $here`
root=`echo "import os; print os.path.realpath('$1')" | python`

host=$2
port=$3
walp=$4
walf=$5

# Copy WAL to archive directory
if [ ! -f $root/sqldb/archive/$walf ]; then
    cp $walp $root/sqldb/archive/$walf
    rc=$?
    if [ "$rc" != "0" ]; then
        exit $rc
    fi
fi

# Trigger a backup if we have 10 WAL files archived since the last backup
lastbak=`ls $root/sqldb/archive | sort -r | grep "\.backup$" | head -1`
if [ "$lastbak" = "" ]; then
    exit 0
fi
wals=`ls $root/sqldb/archive | sort -r | grep -v "\.backup\.tar\.gz$"`

w=0
for f in $wals; do
    if [ "$f" = "$lastbak" ]; then
        break
    fi
    w=$((w+1))

    if [ "$w" = "10" ]; then
        nohup /bin/sh -c "$here/pgsql-backup $root $host $port" 1>/dev/null 2>/dev/null &
        break
    fi
done

exit 0