#!/bin/bash

export ENABLE_REPLICATION=true

set -eu
export_vars=$(cgroup-limits) ; export $export_vars

source "$CONTAINER_SCRIPTS_PATH"/common.sh

set_pgdata

function initialize_replica() {
  echo "Initializing PostgreSQL slave ..."
  # TODO: Validate and reuse existing data?
  rm -rf $PGDATA
  PGPASSWORD="${POSTGRESQL_MASTER_PASSWORD}" pg_basebackup -x --no-password --pgdata ${PGDATA} --host=${MASTER_FQDN} --port=5432 -U "${POSTGRESQL_MASTER_USER}"

  # PostgreSQL recovery configuration.
  generate_postgresql_recovery_config
  cat >> "$PGDATA/recovery.conf" <<EOF

# Custom OpenShift recovery configuration:
include '${POSTGRESQL_RECOVERY_FILE}'
EOF
}

check_env_vars
generate_passwd_file
generate_postgresql_config

wait_for_postgresql_master
export MASTER_FQDN=$(postgresql_master_addr)
initialize_replica

unset_env_vars
exec postgres "$@"