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https://github.com/apache/cloudstack.git
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144 lines
3.5 KiB
Bash
144 lines
3.5 KiB
Bash
#!/bin/bash
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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# Only one lock is allowed: biglock
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# getLockFile() parameters
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# $1 lock filename
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# $2 timeout seconds
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#set -x
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getCurrLock() {
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result=`ls $__LOCKDIR/*-$1.lock 2>/dev/null | head -n1`
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while [ $? -ne 0 ]
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do
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result=`ls $__LOCKDIR/*-$1.lock 2>/dev/null| head -n1`
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done
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echo $result
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}
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getLockFile() {
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lock=$1
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__locked=0
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__TS=`date +%s%N`
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__LOCKDIR="/tmp"
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__LOCKFILE="$__LOCKDIR/$__TS-$$-$lock.lock"
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if [ $2 ]
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then
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__TIMEOUT=$2
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else
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__TIMEOUT=30
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fi
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if [ -e $__LOCKFILE ]
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then
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logger -t cloud "Process $0 pid $$ want to get ECLUSIVE LOCK $lock RECURSIVELY!"
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psline=`ps u $$`
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logger -t cloud "Failed job detail: $psline"
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echo 0
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return
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fi
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psline=`ps u $$`
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echo $psline > $__LOCKFILE
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if [ ! -e $__LOCKFILE ]
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then
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return
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fi
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for i in `seq 1 $(($__TIMEOUT * 10))`
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do
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currlock=$(getCurrLock $lock)
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if [ $currlock -ef $__LOCKFILE ]
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then
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__locked=1
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break
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fi
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sleep 0.1
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if [ $((i % 10)) -eq 0 ]
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then
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logger -t cloud "Process $0 pid $$ waiting for the lock $lock for another 1 second"
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fi
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done
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if [ $__locked -ne 1 ]
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then
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logger -t cloud "fail to acquire the lock $lock for process $0 pid $$ after $__TIMEOUT seconds time out!"
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cmd=`cat $currlock 2>/dev/null`
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if [ $? -eq 0 ]
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then
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logger -t cloud "waiting for process: $cmd"
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else
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logger -t cloud "didn't get info about process who we're waiting for"
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fi
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psline=`ps u $$`
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logger -t cloud "Failed job detail: $psline"
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rm $__LOCKFILE
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fi
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echo $__locked
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}
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# releaseLockFile() parameters
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# $1 lock filename
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# $2 locked(1) or not(0)
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releaseLockFile() {
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__LOCKDIR="/tmp"
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__LOCKFILE="$__LOCKDIR/*-$$-$1.lock"
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__locked=$2
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if [ "$__locked" == "1" ]
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then
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rm $__LOCKFILE
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fi
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}
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# releaseLockFile() parameters
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# $1 exit value
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# $2 lock filename
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# $3 locked(1) or not(0)
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unlock_exit() {
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releaseLockFile $2 $3
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exit $1
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}
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# calculate the ip & network mask
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rangecalc(){
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local IFS='.'
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local -a oct mask ip
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read -ra oct <<<"$1"
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read -ra mask <<<"$2"
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for i in {0..3}
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do
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ip+=( "$(( oct[i] & mask[i] ))" )
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done
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echo "${ip[*]}"
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}
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#get cidr of the nic
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getcidr(){
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local dev=$1
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local mask=`ifconfig $dev|grep "Mask"|cut -d ":" -f 4`
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local cidrsize=`ip addr show $dev|grep inet|head -n 1|awk '{print $2}'|cut -d '/' -f 2`
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local ipaddr=`ip addr show $dev|grep inet|head -n 1|awk '{print $2}'|cut -d '/' -f 1`
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local base=$(rangecalc $ipaddr $mask)
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echo $base/$cidrsize
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}
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