#!/bin/bash

# wait for Postgres to start
function postgres_ready() {
    python << END
        import sys
        import psycopg2
        try:
            conn = psycopg2.connect(dbname="postgres", user="postgres", password="postgres", host="postgres")
        except psycopg2.OperationalError:
            sys.exit(-1)
        sys.exit(0)
    END
}

until postgres_ready; do
  >&2 echo "Postgres is unavailable - sleeping"
  sleep 1
done