pre-start.sh.erb

#!/bin/bash -eu

pidnum=$$
pname=$(basename $0)

set +u
source /var/vcap/packages/postgres-common/utils.sh
set -u
source /var/vcap/jobs/postgres/bin/pgconfig.sh
source /var/vcap/jobs/postgres/bin/utils.sh

tee_output_to_sys_log "${LOG_DIR}" "${pname}" "${LOG_FORMAT}" "${pname}.stdout.log" "${pname}.stderr.log" "${pidnum}"

function upgrade(){
  if [ -d $DATA_DIR -a -f $POSTGRES_UPGRADE_LOCK ]; then
    echo "FAIL: DB upgrade stopped in the middle, manual intervention required, quitting..."
    exit 1
  fi

  if [ -d "${DATA_DIR_OLD}" -a -f "${DATA_DIR_OLD}/postgresql.conf" ]; then
    if [ ${pgversion_upgrade_from} != ${pgversion_current} ]; then
      # UPGRADING
      if is_major; then
        run_major_upgrade
      else
        run_minor_upgrade
      fi
    fi
  else
    init_data_dir
  fi
  echo ${pgversion_current} > ${VERSION_FILE}
  chown -R vcap:vcap "${VERSION_FILE}"
  chmod 700 "${VERSION_FILE}"
}

function main() {
  echo "Checking PostgreSQL is stopped"
  check_pidfile "${PIDFILE}" 30
  mkdir -p "${PG_STORE_DIR}"
  chown -R vcap:vcap "${PG_STORE_DIR}"
  chmod 700 "${PG_STORE_DIR}"

  if [ ! -f ${VERSION_FILE} ]; then
    existing_data_dirs=$(compgen -G "${PG_STORE_DIR}/postgres-*" || echo "")

    if [ -n "${existing_data_dirs}" ]; then
      echo "Found existing data dirs that we cannot upgrade from in this release. Upgrade to and older version first."
      exit 1
    fi
  fi

  mkdir -p "${LOG_DIR}"
  chown -R vcap:vcap "${LOG_DIR}"

  mkdir -p "${RUN_DIR}"
  chown -R vcap:vcap "${RUN_DIR}"

  PG_CERTS_DIR=${JOB_DIR}/config/certificates
  chmod -R 600 ${PG_CERTS_DIR}/*
  chown -R vcap:vcap ${PG_CERTS_DIR}/*

  sysctl -w "kernel.shmmax=284934144"
}

main
upgrade