#!/bin/bash
# Online recovery 2nd stage script
#
MASTER_DATA_BASE_DIR={{ psql_data_dir }}
MASTER_DATA=${1}
RECOVERY_TARGET=${2}
RECOVERY_DATA_BASE_DIR={{ psql_data_dir }}
RECOVERY_DATA=${3}
port={{ psql_db_port }}        # PostgreSQL port number

archive_dir={{ psql_wal_archiving_log_dir }}

logger "pgpool_recovery_2: MASTER_DATA=$MASTER_DATA"
logger "pgpool_recovery_2: RECOVERY_DATA=$RECOVERY_DATA"
logger "pgpool_recovery_2: archive_dir=$archive_dir"


# Force to flush current value of sequences to xlog
psql -p $port -t -c 'SELECT datname FROM pg_database WHERE NOT datistemplate AND datallowconn' template1|
while read i
do
  if [ "$i" != "" ];then
    psql -p $port -c "SELECT setval(oid, nextval(oid)) FROM pg_class WHERE relkind = 'S'" $i
  fi
done

# Flush all transactions to disk. Since pgpool stopped all connections,
# there cannot be any data that does not reside on disk until the
# to-be-recovered host is back on line.
psql -p $port -c "SELECT pgpool_switch_xlog('$archive_dir')" template1

# Copy over all archive logs at once.
rsync -avx --delete $archive_dir/ \
    $RECOVERY_TARGET:$archive_dir/

# Delete the flag file to disable WAL archiving again.
rm $archive_dir/backup_in_progress