#!/bin/bash

# `pg_dumpall|psql` pipeline called from `pg_upgradecluster -m dump`

set -eu
set -o pipefail # needs dash >= 0.5.12-7

# all these options are mandatory
while getopts "A:h:H:p:P:Q:U:" opt ; do
    case $opt in
        A) PG_DUMPALL="$OPTARG" ;;
        h) OLDHOST="$OPTARG" ;;
        H) NEWHOST="$OPTARG" ;;
        p) OLDPORT="$OPTARG" ;;
        P) NEWPORT="$OPTARG" ;;
        Q) PSQL="$OPTARG" ;;
        U) NEWUSER="$OPTARG" ;;
        *) exit 5 ;;
    esac
done

"$PG_DUMPALL" --quote-all-identifiers -h "$OLDHOST" -p "$OLDPORT" |
    LC_ALL=C grep --text -v "^CREATE ROLE \"$NEWUSER\";$" | # force text mode; avoid error on existing role
    "$PSQL" --no-psqlrc --echo-queries --output /dev/null -vON_ERROR_STOP=on -h "$NEWHOST" -p "$NEWPORT" postgres |
    cut -c 1-${COLUMNS:-80} # avoid overly long output (lowrite)