#!/bin/bash
# parameter 1: schema
# parameter 2: database host
# parameter 3: database port
# parameter 4: max check times

if [ $# -ge 4 ]; then
	check_time=$4
else
	check_time=60
fi

i=0
while [ $i -lt $check_time ]; do
	mysql -h$2 -P$3 -uroot -e "show create database $1" >/dev/null 2>&1
	ret=$?
	if [ "$ret" == 0 ]; then
		echo "database $1 exists"
		break
	fi
	((i++))
	echo "database $1 not exists for $i-th check, retry later"
	sleep 2
done

if [ $i -ge $check_time ]; then
	echo "database $1 not exists at last check"
	exit 1
fi