#!/sbin/sh
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
# Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
#

. /lib/svc/share/smf_include.sh

# SMF_FMRI is the name of the target service. This allows multiple instances 
# to use the same script.

if [ -z $SMF_FMRI ]; then
        echo "SMF framework variables are not initialized."
        exit $SMF_EXIT_ERR
fi

getproparg() {
	val=`svcprop -p $1 $SMF_FMRI`
	[ -n "$val" ] && echo $val
}

MYSQLCNF=`getproparg mysql/cnf`
MYSQLBIN=`getproparg mysql/bin`
MYSQLDATA=`getproparg mysql/data`
LOG_ERROR=${MYSQLDATA}/`/usr/bin/uname -n`.err
STARTTIMEOUT=180

if [ -z "${MYSQLCNF}" ]; then
        echo "mysql/cnf property not set"
        exit $SMF_EXIT_ERR_CONFIG
fi

if [ -z "${MYSQLBIN}" ]; then
        echo "mysql/bin property not set"
        exit $SMF_EXIT_ERR_CONFIG
fi

if [ -z "${MYSQLDATA}" ]; then
	echo "mysql/data property not set"
	exit $SMF_EXIT_ERR_CONFIG
fi

if [ ! -d "${MYSQLDATA}" ]; then
	echo "mysql/data directory ${MYSQLDATA} is not a valid MySQL data directory"
	exit $SMF_EXIT_ERR_CONFIG
fi

if [ ! -d "${MYSQLDATA}"/mysql ]; then
	(
	exec 2>&1
	set -x
	"${MYSQLBIN}"/mysqld --initialize --user=mysql --datadir="${MYSQLDATA}" --log-error="${LOG_ERROR}"
	)
fi

getpidfile() {
 ret=$(${MYSQLBIN}/my_print_defaults --defaults-file=${MYSQLCNF} \
 mysqld | grep '^--pid-file=' | cut -d= -f2- | tail -1)
 [ -z "$ret" ] && ret="${MYSQLDATA}/$(/usr/bin/uname -n).pid"
 echo $ret
}

getsockfile() {
 ret=$(${MYSQLBIN}/my_print_defaults --defaults-file=${MYSQLCNF} \
 mysqld | grep '^--socket=' | cut -d= -f2- | tail -1)
 [ -z "$ret" ] && ret="/tmp/mysql.sock"
 echo $ret
}

PIDFILE=$(getpidfile)
SOCKFILE=$(getsockfile)

# ping function which return success when mysqld starts accepting connections
# or return failure in case of timeout after $STARTTIMEOUT seconds.
# using this function in mysql_start(), method waits/blocks to mysqld is really ready,
# which might take some time in case of recovery.

mysql_pinger() {    
    mysqld_safe_pid=$1
    timer=$STARTTIMEOUT
    ret=0
    while [ $timer -gt 0 ]; do
        sleep 1
        "${MYSQLBIN}"/mysqladmin --no-defaults --socket=${SOCKFILE} --user=UNKNOWN_MYSQL_USER ping >/dev/null 2>&1 && break
	timer=$(expr $timer - 1)

	# Check if mysqld_safe is still alive, if not there is no hope
	if ! kill -0 $mysqld_safe_pid >/dev/null 2>&1 ; then
	    ret=1
	    break
	fi
    done
    
    # Did we timeout?
    if [ $timer = 0 ]; then
	echo "MySQL Database start up timeout after ${STARTTIMEOUT}s"
	ret=1
    fi
    return $ret
}

# refresh method for this service is not defined because mysqld by itself
# cannot accept a HUP signal to reload the configuration file my.cnf

mysql_start() 	{
	(
	exec 2>&1
	set -x
	"${MYSQLBIN}"/mysqld_safe --defaults-file="${MYSQLCNF}" --user=mysql --datadir="${MYSQLDATA}" --pid-file="${PIDFILE}" > /dev/null &
	
	if mysql_pinger $! ; then
            echo "Starting service MySQL"
        else
            echo "Failed to start service MySQL"
            exit $SMF_EXIT_ERR
        fi
	
	)
}

case "$1" in
'start')
	mysql_start 
	;;

*)
	echo "Usage: $0 start"
	exit 1
	;;

esac
exit $SMF_EXIT_OK