#!/bin/bash 
#ver 1.2 by gavin 
#need inotify-tools.x86_64 && inotify-tools-devel.x86_64 package  
#yum -y install inotify-tools.x86_64 inotify-tools-devel.x86_64 
 
usage_info () { 
    echo "Usage: $0 optstring parameters" 
    echo "      --verbose       increase verbosity info" 
} 
 
install_package () { 
    echo "need inotify-tools.x86_64 && inotify-tools-devel.x86_64 package" 
    echo "" 
    echo "rpm --import http://dag.wieers.com/rpm/packages/RPM-GPG-KEY.dag.txt" 
    echo "rpm -Uvh http://apt.sw.be/redhat/el5/en/i386/RPMS.dag/rpmforge-release-0.3.6-1.el5.rf.i386.rpm" 
    echo "rpm -Uvh http://apt.sw.be/redhat/el5/en/x86_64/RPMS.dag/rpmforge-release-0.3.6-1.el5.rf.x86_64.rpm" 
    echo "yum -y install inotify-tools.x86_64 inotify-tools-devel.x86_64" 
    echo "" 
} 
 
MONITOR_DIR=/home/atlantis/monitor 
LOG_DIR=/home/atlantis/logs 
LOG_FILE=$LOG_DIR/monitor.log 
#TRANS_DIR=/hdfs2 
EVENTS=(-e CREATE,MODIFY,MOVED_TO,DELETE) 
PID=/tmp/monitor_file.pid 
 
check () { 
if [ ! -d $MONITOR_DIR ]  
then 
  mkdir -p $MONITOR_DIR 
fi 
 
if [ ! -d $LOG_DIR ]  
then 
  mkdir -p $LOG_DIR 
fi 
echo $EOF > $LOG_FILE 
} 
 
monitor_file () { 
while inotifywait ${EVENTS[@]} $MONITOR_DIR; do 
    HOST=`ls -rt $MONITOR_DIR |tail -n1` 
#    DIR=`cat $MONITOR_DIR/$HOST` 
    echo "<-- active ftp get $HOST log files `date +%Y%m%d%H%M%S`-->" 
#    echo "`dirname %0`/get_log.sh $HOST" 
    /home/atlantis/scripts/get_log.sh $HOST & 
    echo "" 
done 
} 
 
main () { 
check 
[ ! -x /usr/bin/inotifywait ] && install_package 
 
[ -e $PID ] && ps -ef |awk '{print $2}' |grep `cat $PID`|grep -v grep &>/dev/null 
if [ `echo $?` -eq 0 ]  
then  
    echo "$0 can not run : process is already running in `cat $PID` pid" 
    exit 1 
fi 
 
if [ $# -eq 0 ] 
then 
    monitor_file &> $LOG_FILE & 
    echo $! > $PID 
elif [ "$1" ==  "--verbose" ] 
then  
    monitor_file   
else 
    usage_info 
    exit 1 
fi 
} 
 
#monitor_file 
main $@ 
 
exit 0