JVM bootstrap script

jvm-bootstrap.sh

#!/bin/bash

# The MIT License (MIT)

# Copyright (c) 2014 Ivan Prisyazhniy <john.koepi@gmail.com>

# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:

# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

# Helpers
die() { echo "ERR: $@" 1>&2 ; exit 1; }
warn() { echo "WARN: $@" 1>&2 ; }
dir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )" && cd $dir/..
argv=("$@") 

# Validate params
[ `ulimit -n` -lt 10000 ] && warn "Process have very low file max limit = $(ulimit -n)"

# HOSTNAME=<full hostname of the server>
[ -z "${HOSTNAME}" ] && HOSTNAME=`hostname -f`
# INTERNAL_IP=internal ip address for binding api handlers to
if [ -z "${INTERNAL_IP}" ] ; then
    warn "If you are in production INTERNAL_IP=0.0.0.0 var must be explicitly set"
    INTERNAL_IP="0.0.0.0"
fi

[ -z "${MEMORY_START}" ] && MEMORY_START="2048M"
[ -z "${MEMORY_MAX}" ] && MEMORY_MAX="4096M"

# MASTER="{0/1}" is master server
[ -z "${MASTER}" ] && MASTER="0"
# Allow login to master???
[ -z "${MASTER_NO_LOGIN}" ] && MASTER_NO_LOGIN="1"

# NODE="{1,2,}" unique game server node index per physical server
[ -z "${NODE}" ] && NODE="1"
[ 1 -gt "${NODE}" ] && die "Node id must be greater than 0"
# Start chat service
[ -z "${CHAT}" ] && CHAT="${MASTER}"

# GAME_PLATFORM={web/...}
[ -z "${GAME_PLATFORM}" ] && GAME_PLATFORM=""
# HOST_ALIAS=${GAME_PLATFORM}[INDEX]
[ -z "${HOST_ALIAS}" ] && [ ! -z "${GAME_PLATFORM}" ] && HOST_ALIAS="${GAME_PLATFORM}"

[ -z "${JMXRMI_ENABLED}" ] && JMXRMI_ENABLED="1"
[ -z "${JMXRMI_PORT_BASE}" ] && JMXRMI_PORT_BASE=5000
[ -z "${JMXRMI_PORT}" ] && JMXRMI_PORT=$((${JMXRMI_PORT_BASE}+${NODE}-1))

[ -z "${DEBUG_ENABLED}" ] && DEBUG_ENABLED="0"
[ -z "${DEBUG_PORT_BASE}" ] && DEBUG_PORT_BASE=5005
[ -z "${DEBUG_PORT}" ] && DEBUG_PORT=$((${DEBUG_PORT_BASE}+${NODE}-1))

[ -z "${CLASS}" ] && CLASS="your.java.main.Class.by.default"
[ -z "${SERVER_PORT_BASE}" ] && SERVER_PORT_BASE=9339
[ -z "${SERVER_PORT}" ] && SERVER_PORT=$((${SERVER_PORT_BASE}+${NODE}-1))

# JVM configuration
jvm_param_common=(
    -Dfile.encoding=UTF-8
    -Djava.net.preferIPv4Stack=true
)

jvm_param_log=(
    -Dnet.spy.log.LoggerImpl=net.spy.memcached.compat.log.SunLogger
)
if [ -z "${JVM_LOG_PROPS}" ] ; then
    JVM_LOG_PROPS="etc/logging_${GAME_PLATFORM}.properties"
    [ ! -f "${JVM_LOG_PROPS}" ] && JVM_LOG_PROPS="etc/logging.properties"
    [ ! -f "${JVM_LOG_PROPS}" ] && die "Can't find log configuration for jvm at etc/logging.properties or etc/logging_${GAME_PLATFORM}.properties"
else
    [ ! -f "${JVM_LOG_PROPS}" ] && die "Can't find log configuration for jvm at ${JVM_LOG_PROPS}"
fi
[ ! -z "${JVM_LOG_PROPS}" ] && jvm_param_log+=(
    -Djava.util.logging.config.file="${JVM_LOG_PROPS}"
)

jvm_param_cpu=(
    -d64
    -server
)

jvm_param_memory=(
    -Xms"${MEMORY_START}"
    -Xmx"${MEMORY_MAX}"

    -XX:+AlwaysPreTouch

    -XX:MaxPermSize=160m
    -XX:PermSize=160m

    -XX:NewSize=256m
    -XX:MaxTenuringThreshold=0
    -XX:SurvivorRatio=16
)

jvm_param_gc=(
    #  -XX:+UseG1GC
    #  -XX:MaxGCPauseMillis=100
    #   http://docs.oracle.com/cd/E13209_01/wlcp/wlss30/configwlss/jvmgc.html
    -XX:+UseParNewGC
    -XX:+UseConcMarkSweepGC
    -XX:+CMSScavengeBeforeRemark
    -XX:+CMSParallelRemarkEnabled
    -XX:+UseTLAB
    -XX:+CMSClassUnloadingEnabled
    -XX:+CMSPermGenSweepingEnabled

    -XX:-UseGCOverheadLimit
    -XX:+ExplicitGCInvokesConcurrent
)

jvm_param_debug_print=(
    -verbose:gc
    -verbose:sizes

    -XX:+PrintGCDetails
    -XX:+PrintGCDateStamps
    -XX:+PrintTenuringDistribution

    -XX:-PrintCompilation
    -XX:-TraceClassLoading
    -XX:-TraceClassUnloading

    -Xloggc:log/${GAME_SERVER_ALIAS}-gc.log
)

jvm_param_ops=(
    -XX:+AggressiveOpts
    -XX:-OmitStackTraceInFastThrow
#   http://bugs.java.com/view_bug.do?bug_id=6385687
    -XX:-UseFastEmptyMethods
    -XX:-UseFastAccessorMethods
#   PermGen issue: do not make it less than the default value
#  -XX:CompileThreshold=10000
#  -XX:ReservedCodeCacheSize=64m
#   http://www.ibm.com/developerworks/aix/library/j-nativememory-aix/index.html?ca=dat
#   http://anshuiitk.blogspot.ru/2010/11/excessive-full-garbage-collection.html
#  -Dsun.reflect.inflationThreshold=15
#  -Dsun.reflect.noInflation=false
)

jvm_param_jmxrmi=()
if [ "${JMXRMI_ENABLED}" -eq 1 ] ; then
    jvm_param_jmxrmi+=(
        -javaagent:lib/jmxrmiagent.jar
        -Djava.rmi.server.hostname="${HOSTNAME}"
        -Dcom.sun.management.jmxremote.authenticate=false
        -Dcom.sun.management.jmxremote.ssl=false
        -Dcom.sun.management.jmxrmi.port="${JMXRMI_PORT}"
        -Dcom.sun.management.jmxrmi.host="${HOSTNAME}"
    )
fi

jvm_param_game_bootstrap=()

jvm_param_game_hibernate=(
    -Dhibernate.bytecode.use_reflection_optimizer=true
    -Dhibernate.bytecode.provider=javassist
)

jvm_param_game_node=()

if [ "${DEBUG_ENABLED}" -eq 1 ] ; then
    jvm_param_debug=(
        -Xdebug
        -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address="${DEBUG_PORT}"
        #   "-agentlib:jdwp=transport=dt_socket,server=n,address=192.168.1.1:${DEBUG_PORT},suspend=y"
    )
fi

jvm_classpath=(
    etc
    lib
)

# Build JVM configuration set
# $1 - jvm array name
# $2 - lines to add
# $3 - lines to remove before
function extend_jvm() {
    local jvmRef=$1[@]
    [ ! -z "$3" ] && eval "local _$1=\${$jvmRef/*$3*/};$1=(\"\${_$1[@]}\")"
    [ ! -z "$2" ] && eval "$1+=(\"\$2\")"
}

# Delele conf line from conf set
# $1 - jvm array name
# $2 - lines to remove before
function disable_jvm() {
    local jvmRef=$1[@]
    [ ! -z "$2" ] && eval "local _$1=\${$jvmRef/*$2*/};$1=(\"\${_$1[@]}\")"
}

# Build jvm_params
# [$1] optional - array list of config sets
function set_jvm_params {
    if [ -z "$1" ]; then
        local jvm_params_list=(`( set -o posix ; set ) | grep -E 'jvm_param_.*=\(' | sed 's/=.*//'`)
    else
        local ref=$1[@]
        local jvm_params_list=("${!ref}")
    fi

    jvm_params=()
    for pset in ${jvm_params_list[@]}; do
        local jvm_ref=${pset}[@]
        jvm_params+=("${!jvm_ref}")
    done
}

# $1 - jvm params array
# $2 - jvm classpath array
function set_game_cmd {
    local paramsRef=$1[@]
    local cpRef=$2[@]
    cmd="java ${!paramsRef} -cp ."
    for cp in ${!cpRef} ; do
        cmd="${cmd}:${cp}"
    done
    cmd="${cmd} ${CLASS} ServerPort=${SERVER_PORT}"
}

# $1 - jvm params array
# $2 - jvm classpath array
function set_tool_cmd {
    disable_jvm $2 game-server-base
    local paramsRef=$1[@]
    local cpRef=$2[@]
    cmd="java ${!paramsRef} -cp ."
    for cp in ${!cpRef} ; do
        cmd="${cmd}:${cp}"
    done
    cmd="${cmd} ${CLASS}"
    [ "${AUTO_CONFIG_ARGV}" == "1" ] && cmd="${cmd} etc/game_${GAME_PLATFORM}.xml"
    cmd="${cmd} ${argv[@]}"
}

function game_start {
    set_jvm_params
    set_game_cmd jvm_params jvm_classpath
    echo ${cmd}
    exec ${cmd}
}

function tool_start {
    # disabled:
    # jvm_param_debug jvm_param_debug_print jvm_param_game_bootstrap
    # jvm_param_game_hibernate jvm_param_game_node jvm_param_jmxrmi
    local jvm_params_list=(
        jvm_param_common jvm_param_cpu jvm_param_gc jvm_param_log jvm_param_memory jvm_param_ops jvm_param_debug
    )
    set_jvm_params jvm_params_list
    set_tool_cmd jvm_params jvm_classpath
    echo ${cmd}
    exec ${cmd}
}