#!/bin/sh
# restart,v 2.5 1993/12/16 18:46:37 dmoore Exp

GAMEDIR=$HOME/tmuck2.3/minimal-db
PORT=2180
NAME=minimal-db
MAILTO=dmoore

PATH=$PATH:$GAMEDIR

# On smart systems this will give it a directory to save gmon.out files
# for later perusal (if you compiled with -pg).
PROFDIR=$GAMEDIR/prof
export PROFDIR


# Routine to die and remove lock file.
die() {
    echo $*
    rm restart.lock
    exit 1
}

# Routine to check that the last line of the db seems fine and if so
# sanity check it.
check_db() {
    if [ -r $1 ] && [ "`tail -1 $1`" = "***END OF DUMP***" ]; then
        echo "Sanity checking: $1"
	echo "Output will also be saved in the file $GAMEDIR/saneout."
        status=`(((sanity < $1 2>&1); echo $? 1>&3) | (tee $GAMEDIR/saneout > /dev/tty 3>&-)) 3>&1`
        return $status
    else
        return 1
    fi
}


# Go to the right directory.
cd $GAMEDIR

# Check for someone already starting the muck, and exit if they have.
if [ -f restart.lock ]; then
    echo "Restart already in progress."
    exit 1
fi

# Lock file to prevent multiple starts.
touch restart.lock

# Make sure that a muck with this port # isn't already running
if [ `ps uww | egrep netmuck | egrep $PORT | wc -l` -gt 1 ]; then
    die "Not restarting, process already exists."
fi

# Try to find a valid database.  First try the PANIC, then fall back
# to the in.$NAME.new file.  If we can't find one, then die.
if check_db data/in.$NAME.new.PANIC; then
    mv data/in.$NAME.new.PANIC data/in.$NAME.new
    echo "Moving in.$NAME.new.PANIC to in.$NAME.new"
else
    # Either no panic dump, or it's corrupted.
    if [ -r data/in.$NAME.new.PANIC ]; then
        echo "Warning: PANIC dump failed on "`date` | mail $MAILTO
        echo "Warning: PANIC dump failed trying other means to start."
    fi
    if check_db data/in.$NAME.new; then : ;
    else
        # None of the dumps are ok, bail.
        die "Fatal: in.$NAME.new incomplete or corrupted."
    fi
fi

# If it makes it this far then we definitely have a valid db: in.$NAME.new
# So save the old db, if there was one, and then start it up.
echo "Moving in.$NAME in.$NAME.old"
mv -f data/in.$NAME data/in.$NAME.old
echo "Copying in.$NAME.new to in.$NAME"
cp data/in.$NAME.new data/in.$NAME


# Start up the muck
mv -f newnetmuck netmuck
date >> logs/stderr
 
./netmuck data/in.$NAME data/in.$NAME.new $PORT 2>> logs/stderr &
echo "Muck pid: $!"

# Remove the lock after the db has a chance to load.
(sleep 10; rm restart.lock) &