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#!/bin/sh
#
# Copyright (c) 2014 Eric Radman <ericshane@eradman.com>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
usage() {
>&2 echo "release: ${release}"
>&2 echo "usage: pg_tmp [-t [-p port]] [-w timeout] [-o extra-options] [-d datadir]"
exit 1
}
trap 'printf "$0: exit code $? on line $LINENO\n" >&2; exit 1' ERR \
2> /dev/null || exec bash $0 "$@"
trap '' HUP
set +o posix
USER_OPTS=""
>/dev/null getopt tp:w:o:d: "$@" || usage
while [ $# -gt 0 ]; do
case "$1" in
-t) LISTENTO="127.0.0.1" ;;
-p) PGPORT="$2"; shift ;;
-w) TIMEOUT="$2"; shift ;;
-o) USER_OPTS="$2"; shift ;;
-d) TD="$2"; shift ;;
*) CMD=$1 ;;
esac
shift
done
# bnewbold: hack this in to "make it work" on debian/ubuntu
export PATH="$PATH:/usr/lib/postgresql/9.6/bin:/usr/lib/postgresql/11/bin"
initdb -V > /dev/null || exit 1
PGVER=$(psql -V | awk '{print $NF}')
[ -n "$LISTENTO" ] && [ -z "$PGPORT" ] && {
PGPORT="$(getsocket)"
}
case ${CMD:-start} in
initdb)
[ -z $TD ] || mkdir -p $TD
[ -z $TD ] && TD="$(mktemp -d ${SYSTMP:-/tmp}/ephemeralpg.XXXXXX)"
initdb --nosync -D $TD/$PGVER -E UNICODE -A trust > $TD/initdb.out
cat <<-EOF >> $TD/$PGVER/postgresql.conf
unix_socket_directories = '$TD'
listen_addresses = ''
shared_buffers = 12MB
fsync = off
synchronous_commit = off
full_page_writes = off
log_min_duration_statement = 0
log_connections = on
log_disconnections = on
EOF
touch $TD/NEW
echo $TD
;;
start)
# 1. Find a temporary database directory owned by the current user
# 2. Create a new datadir if nothing was found
# 3. Launch a background task to create a datadir for future invocations
if [ -z $TD ]; then
for d in $(ls -d ${SYSTMP:-/tmp}/ephemeralpg.*/$PGVER 2> /dev/null); do
td=$(dirname "$d")
test -O $td/NEW && rm $td/NEW 2> /dev/null && { TD=$td; break; }
done
[ -z $TD ] && { TD=$($0 initdb); rm $TD/NEW; }
nice -n 19 $0 initdb > /dev/null &
else
[ -O $TD/$PGVER ] || TD=$($0 initdb -d $TD)
fi
nice -n 19 $0 -w ${TIMEOUT:-60} -d $TD -p ${PGPORT:-5432} stop > $TD/stop.log 2>&1 &
[ -n "$PGPORT" ] && OPTS="-c listen_addresses='$LISTENTO' -c port=$PGPORT"
LOGFILE="$TD/$PGVER/postgres.log"
pg_ctl -W -o "$OPTS $USER_OPTS" -s -D $TD/$PGVER -l $LOGFILE start
PGHOST=$TD
export PGPORT PGHOST
if [ -n "$PGPORT" ]; then
url="postgresql://$(whoami)@$LISTENTO:$PGPORT/test"
else
url="postgresql:///test?host=$(echo $PGHOST | sed 's:/:%2F:g')"
fi
for n in 1 2 3 4 5; do
sleep 0.1
createdb -E UNICODE test > /dev/null 2>&1 && break
done
[ $? != 0 ] && { >&2 cat $LOGFILE; exit 1; }
[ -t 1 ] && echo "$url" || echo -n "$url"
;;
stop)
[ -O $TD/$PGVER/postgresql.conf ] || {
>&2 echo "Please specify a PostgreSQL data directory using -d"
exit 1
}
trap "rm -r $TD" EXIT
PGHOST=$TD
export PGHOST PGPORT
q="SELECT count(*) FROM pg_stat_activity WHERE datname='test';"
until [ "${count:-2}" -lt "2" ]; do
sleep ${TIMEOUT:-0}
count=$(psql test --no-psqlrc -At -c "$q" || echo 0)
done
pg_ctl -W -D $TD/$PGVER stop
sleep 1
;;
selftest)
export SYSTMP=$(mktemp -d /tmp/ephemeralpg-selftest.XXXXXX)
trap "rm -r $SYSTMP" EXIT
printf "Running: "
printf "initdb "; dir=$($0 initdb)
printf "start " ; url=$($0 -w 3 -o '-c log_temp_files=100' start)
printf "psql " ; [ "$(psql --no-psqlrc -At -c 'select 5' $url)" == "5" ]
printf "stop " ; sleep 10
printf "verify "; ! [ -d dir ]
echo; echo "OK"
;;
*)
usage
;;
esac
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