pg_ctl

#!/bin/bash
#
# This script is required because of CloudMan - CloudMan's path resolution
# code would result in using the latest version of PostgreSQL installed via
# a package manager. However, if a user switches images, the database data
# may not match the version of PostgreSQL being invoked so this script
# is used to differentiate which PostgreSQL version is actually invoked.
# This had to be done here because it was the only variable for old
# clusters being invoked with a new image. Also note that this script
# is image dependent (because PostgreSQL v9.1 will be the default version).

# Recompose args so pg_ctl will work
args=""

# If an argument contains whitespace, add double quotes around it
whitespace="[[:space:]]"
for arg in "$@"; do
    if [[ $arg =~ $whitespace ]]; then
        arg=\"$arg\"
    fi
    args="$args $arg"
done

# If the -D option is specified (path to data dir), extract PG_VERSION from the data dir
while getopts ":D:" opt; do
  case $opt in
    D)
      # Get current Postgres DB version
      PG_VERSION=`cat "$OPTARG"/PG_VERSION`
      ;;
  esac
done

if [ "$PG_VERSION" == "8.4" ]; then
    CMD="/usr/lib/postgresql/8.4/bin/pg_ctl $args"
else
    CMD="/usr/lib/postgresql/9.1/bin/pg_ctl_orig $args"
fi
# Must eval here; otherwise quotes in the args don’t get passed through properly
eval $CMD