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#!/bin/bash
#
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
#
#
#
# This script starts a broker and then starts additional logging as required.
# *.pid files are generated in the LOG_DIR for later use by the stop-monitored-broker
# script.
#
# Currently this process starts:
# - The broker with additional QPID_OPTS for gc logging
# - Top to monitoring the CPU usage
#
# Additional processes can be started and as long as they write a PID into LOG_DIR/*.pid
# it will be shutdown with the stop script
#
#
# Output the broker log file to aid problem diagnosis
# then exit.
#
brokerFailExit()
{
echo "Broker failed to start up."
cat $BROKER_LOG
exit 1
}
showUsageExit()
{
echo "Usage $0 <Path to Test Broker> <LOG DIR> <CPU Monitor Rate (s)> [Additional options to
pass to Qpid broker startup]"
exit 1
}
#
# Perform 3 attempts to get the broker PID via ps and grep
# if unable the output broker log and exit
#
getBrokerPID()
{
attempts=3
ready=0
while [ $ready == 0 ] ; do
PID=`ps auxwww| grep java | grep Xloggc | awk '{print $2}'`
if [ ! $PID == 0 ] ; then
ready=1
else
attempts=$[ $attempts - 1 ]
if [ $attempts == 0 ] ; then
brokerFailExit
fi
sleep 1
fi
done
}
#
# Additional Check to ensure that the broker process
# has correctly written 'Ready' to the log file.
#
checkBrokerStarted()
{
attempts=3
ready=0
while [ $ready == 0 ] ; do
grep Ready $BROKER_LOG > /dev/null
if [ $? == 0 ] ; then
ready=1
else
attempts=$[ $attempts - 1 ]
if [ $attempts == 0 ] ; then
brokerFailExit
fi
echo "Broker not ready sleeping 1s"
sleep 1
fi
done
}
#
# Command Line setup
#
# Ensure we have minimum of three arguments
if [[ $# > 2 ]] ; then
BROKER_VERSION=$1
LOG_DIR=$2
CPU_MONITOR_RATE=$3
# Remove these arguments from the $@ variable
shift
shift
shift
else
# If we have no arguments then use these as the default
CPU_MONITOR_RATE=0.5
LOG_DIR=$QPID_WORK/logging
BROKER_VERSION=qpid-0.5
fi
#
# Check the specified broker is reachable
# it it is not the log and show usage
#
if [ ! -d $BROKER_VERSION ] ; then
echo "Broker not available at: $BROKER_VERSION"
showUsageExit
fi
#
# Check to see if we have an absolute path for logging
#
logStart=`echo $LOG_DIR|cut -c 1`
#
# If we don't have an absolute path then add the current
# directory path to the start.
#
if [[ $logStart != '/' ]] ; then
echo -n "$LOG_DIR is not absolute, using "
LOG_DIR=`pwd`/$LOG_DIR
echo $LOG_DIR
fi
#
# Validate that the directory does not exist
# - this is so we can guarrantee a clean run.
# If it does exit then log and show usage
#
if [ -d $LOG_DIR ] ; then
echo "Log directory already exists : $LOG_DIR"
showUsageExit
fi
#
# Create the logging directory
#
mkdir -p $LOG_DIR
#
# Variable for broker log
#
BROKER_LOG=$LOG_DIR/broker.log
# Variable to hold broker PID
PID=0
export QPID_OPTS="-Xloggc:$LOG_DIR/gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCTimeStamps"
#
# Start Qpid Broker
#
echo "Starting Broker : $BROKER_VERSION"
pushd $BROKER_VERSION/bin > /dev/null
./qpid-server $@ 2> $BROKER_LOG >&2 &
popd > /dev/null
# Wait and check startup was ok
echo "Waiting for broker startup"
getBrokerPID
checkBrokerStarted
echo $PID > $LOG_DIR/broker.pid
#
# Start CPU Monitoring via TOP
#
echo "Starting CPU Monitor at RATE:$CPU_MONITOR_RATE on $SERVER1"
pushd $LOG_DIR > /dev/null
echo $CPU_MONITOR_RATE > top.rate
top -d $CPU_MONITOR_RATE -S -c -p $PID -b > broker_cpu.log &
#
# Get top pid using $!
#
echo $! > $LOG_DIR/top.pid
popd > /dev/null
#
# Generate Stat files
#
echo "Generating Stat data"
stat $BROKER_LOG > $BROKER_LOG.stat
stat $LOG_DIR/broker_cpu.log > $LOG_DIR/broker_cpu.log.stat
stat $LOG_DIR/gc.log > $LOG_DIR/gc.log.stat
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