getdevicedata.sh.in

Network Administration Visualized 网络管理可视化源码

#!/usr/bin/env bash

prefix=@prefix@
exec_prefix=@exec_prefix@
bindir=@bindir@
localstatedir=@localstatedir@
sysconfdir=@sysconfdir@
libdir=@libdir@
javalibdir=@javalibdir@

NAV_CONF="${sysconfdir}/nav.conf"

function getopt() {
  awk -F= "/$1/"' && $1!~/#.*/{gsub("^[\t ]+", "", $2); gsub("[\t ]+$", "", $2); print $2}' $NAV_CONF
}

if test -z "$JAVA_HOME"; then 
    JAVA_HOME=`getopt JAVA_HOME`
fi

if test -z "$JAVA_HOME"; then
    JAVA=`which java`
else
    JAVA="$JAVA_HOME/bin/java"
fi

if ! test -x "$JAVA"; then
    echo "Could not find a suitable Java environment." >&2
    echo "Maybe you should set the JAVA_HOME variable?" >&2
    exit 1
fi

JVM_OPTS=`getopt JVM_OPTS_GETDEVICEDATA`
if test -z "$JVM_OPTS"; then
  JVM_OPTS="-Xmx512m"
fi
JVM_OPTS="$JVM_OPTS -Djava.ext.dirs=${javalibdir}"

CUR_DIR=${javalibdir}/getDeviceData
LOG_DIR="${localstatedir}/log/getDeviceData"
PIDFILE=${localstatedir}/run/getDeviceData.pid
OUTLOG=${LOG_DIR}/getDeviceData-stdout.log
ERRLOG=${LOG_DIR}/getDeviceData-stderr.log

if test -f $PIDFILE; then
    pidnum=`cat $PIDFILE`
    if (ps -p "${pidnum}" >/dev/null); then
	echo "getDeviceData already running!" >&2
	exit 1
    fi
fi

# If error log exists and has content, we rename it before creating a
# new one
if test -s "${ERRLOG}"; then
    newname="${ERRLOG}.`date +'%Y-%m-%d-%H%M'`.log"
    mv ${ERRLOG} ${newname}
fi

cd $CUR_DIR
# Run program
$JAVA $JVM_OPTS -jar getDeviceData.jar $* >> ${OUTLOG} 2> ${ERRLOG} < /dev/null & 
pidno="$!"
echo $pidno > $PIDFILE

# Check whether it exited immediately
sleep 1
if ! ps -p $pidno >/dev/null; then
    cat $ERRLOG >&2
    exit 1
fi