maven打包dubbo接口之最佳实践

之前刚开始学习dubbo的时候，曾写过一个入门的小例子，当时生产者也是用tomcat去跑的，其实dubbo只需要提供service层接口就好了，并不需要和http相关的东西，所以其实并不需要用tomcat去跑，我们完全打成其他的包直接去跑，这样dubbo接口也不会tomcat性能的限制，而打包可以说是maven最擅长的事情之一，今天就记录一下我们公司的实际项目中使用maven-assembly-plugin打包的方法。

1. 首先在pom文件中，添加maven-assembly-plugin插件

<plugin>  <artifactId>maven-assembly-plugin</artifactId>  <configuration>    <descriptor>src/main/assembly/assembly.xml</descriptor>  </configuration>  <executions>    <execution>      <id>make-assembly</id>      <phase>package</phase>      <goals>        <goal>single </goal>      </goals>    </execution>  </executions></plugin>

在该插件的第四行我们指定了一个assembly.xml文件，下面我们就看看assembly.xml的内容

2. assembly.xml文件

<assembly>  <id>assembly</id>  <formats>    <format>tar.gz</format>  </formats>  <includeBaseDirectory>true</includeBaseDirectory>  <fileSets>    <fileSet>      <outputDirectory>/</outputDirectory>      <includes>        <include>README.txt</include>      </includes>    </fileSet>    <fileSet>      <directory>src/main/scripts</directory>      <outputDirectory>/bin</outputDirectory>    </fileSet>  </fileSets>  <dependencySets>    <dependencySet>      <useProjectArtifact>true</useProjectArtifact>      <outputDirectory>lib</outputDirectory>    </dependencySet>  </dependencySets></assembly>

该文件的第四行中的tar.gz指的就是打包的文件格式，对于Linux用户，对这个格式一定非常熟悉，当然大家也可以指定为zip格式，另外在该文件的第十五行，指定了一个scripts文件夹，那么这里面放的又是什么呢？我们知道打包之后的系统我们要跑起来才能用，那么这里面放的就是对我们的系统操作的一些脚本，打包之后，我们的系统都是一些jar文件，放在了倒数第四行指定的lib文件中，而这些脚本则放在了和lib同级的bin文件中，下面就让我们一一看看scripts中几个文件的内容

3. scripts文件夹

①. start.bat

@echo off & setlocal enabledelayedexpansionset LIB_JARS=""cd ..\libfor %%i in (*) do set LIB_JARS=!LIB_JARS!;..\lib\%%icd ..\binif ""%1"" == ""debug"" goto debugif ""%1"" == ""jmx"" goto jmxjava -Xms64m -Xmx1024m -XX:MaxPermSize=64M -classpath ..\conf;%LIB_JARS% com.alibaba.dubbo.container.Maingoto end:debugjava -Xms64m -Xmx1024m -XX:MaxPermSize=64M -Xdebug -Xnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket,address=8000,server=y,suspend=n -classpath ..\conf;%LIB_JARS% com.alibaba.dubbo.container.Maingoto end:jmxjava -Xms64m -Xmx1024m -XX:MaxPermSize=64M -Dcom.sun.management.jmxremote.port=1099 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false -classpath ..\conf;%LIB_JARS% com.alibaba.dubbo.container.Main:endpause

②. start.sh

#!/bin/bashcd `dirname $0`BIN_DIR=`pwd`cd ..DEPLOY_DIR=`pwd`CONF_DIR=$DEPLOY_DIR/confUSER=wwwGROUP=www#SERVER_NAME=`sed '/dubbo.application.name/!d;s/.*=//' conf/dubbo.properties | tr -d '\r'`#SERVER_PROTOCOL=`sed '/dubbo.protocol.name/!d;s/.*=//' conf/dubbo.properties | tr -d '\r'`#SERVER_PORT=`sed '/dubbo.protocol.port/!d;s/.*=//' conf/dubbo.properties | tr -d '\r'`#LOGS_FILE=`sed '/dubbo.log4j.file/!d;s/.*=//' conf/dubbo.properties | tr -d '\r'`SERVER_NAME=""SERVER_PROTOCOL=""SERVER_PORT=""LOGS_FILE=""if [ -z "$SERVER_NAME" ]; then    SERVER_NAME=`hostname`fiPIDS=`ps -f | grep java | grep "$CONF_DIR" |awk '{print $2}'`if [ -n "$PIDS" ]; then    echo "ERROR: The $SERVER_NAME already started!"    echo "PID: $PIDS"    exit 1fiif [ -n "$SERVER_PORT" ]; then    SERVER_PORT_COUNT=`netstat -tln | grep $SERVER_PORT | wc -l`    if [ $SERVER_PORT_COUNT -gt 0 ]; then        echo "ERROR: The $SERVER_NAME port $SERVER_PORT already used!"        exit 1    fifiLOGS_DIR="/data/logs/`basename $DEPLOY_DIR`"if [ ! -d $LOGS_DIR ]; then    mkdir -p $LOGS_DIR    chown -R $USER.$GROUP $LOGS_DIRfiSTDOUT_FILE=$LOGS_DIR/`basename $DEPLOY_DIR`.logLIB_DIR=$DEPLOY_DIR/libLIB_JARS=`ls $LIB_DIR|grep .jar|awk '{print "'$LIB_DIR'/"$0}'|tr "\n" ":"`JAVA_OPTS=" -Djava.awt.headless=true -Djava.net.preferIPv4Stack=true "JAVA_DEBUG_OPTS=""if [ "$1" = "debug" ]; then    JAVA_DEBUG_OPTS=" -Xdebug -Xnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket,address=8000,server=y,suspend=n "fiJAVA_JMX_OPTS=""if [ "$1" = "jmx" ]; then    JAVA_JMX_OPTS=" -Dcom.sun.management.jmxremote.port=1099 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false "fiJAVA_MEM_OPTS=""BITS=`java -version 2>&1 | grep -i 64-bit`if [ -n "$BITS" ]; then    JAVA_MEM_OPTS=" -server -Xmx2g -Xms2g -Xmn720m -XX:PermSize=128m -Xss256k -XX:+DisableExplicitGC -XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEnabled -XX:+UseCMSCompactAtFullCollection -XX:LargePageSizeInBytes=128m -XX:+UseFastAccessorMethods -XX:+UseCMSInitiatingOccupancyOnly -XX:CMSInitiatingOccupancyFraction=70 "else    JAVA_MEM_OPTS=" -server -Xms2g -Xmx2g -XX:PermSize=128m -XX:SurvivorRatio=2 -XX:+UseParallelGC "fiecho -e "Starting the $SERVER_NAME ...\c"nohup java $JAVA_OPTS $JAVA_MEM_OPTS $JAVA_DEBUG_OPTS $JAVA_JMX_OPTS -classpath $CONF_DIR:$LIB_JARS com.alibaba.dubbo.container.Main > $STDOUT_FILE 2>&1 &COUNT=0while [ $COUNT -lt 1 ]; do        echo -e ".\c"    sleep 1     if [ -n "$SERVER_PORT" ]; then        if [ "$SERVER_PROTOCOL" == "dubbo" ]; then        COUNT=`echo status | nc -i 1 127.0.0.1 $SERVER_PORT | grep -c OK`        else            COUNT=`netstat -an | grep $SERVER_PORT | wc -l`        fi    else    COUNT=`ps -f | grep java | grep "$DEPLOY_DIR" | awk '{print $2}' | wc -l`    fi    if [ $COUNT -gt 0 ]; then        break    fidoneecho "OK!"PIDS=`ps -f | grep java | grep "$DEPLOY_DIR" | awk '{print $2}'`echo "PID: $PIDS"echo "STDOUT: $STDOUT_FILE"

③. stop.sh

#!/bin/bashcd `dirname $0`BIN_DIR=`pwd`cd ..DEPLOY_DIR=`pwd`CONF_DIR=$DEPLOY_DIR/confSERVER_NAME=`sed '/dubbo.application.name/!d;s/.*=//' conf/dubbo.properties | tr -d '\r'`if [ -z "$SERVER_NAME" ]; then    SERVER_NAME=`hostname`fiPIDS=`ps -f | grep java | grep "$CONF_DIR" |awk '{print $2}'`if [ -z "$PIDS" ]; then    echo "ERROR: The $SERVER_NAME does not started!"    exit 1fiif [ "$1" != "skip" ]; then    $BIN_DIR/dump.shfiecho -e "Stopping the $SERVER_NAME ...\c"for PID in $PIDS ; do    kill $PID > /dev/null 2>&1doneCOUNT=0while [ $COUNT -lt 1 ]; do        echo -e ".\c"    sleep 1    COUNT=1    for PID in $PIDS ; do        PID_EXIST=`ps -f -p $PID | grep java`        if [ -n "$PID_EXIST" ]; then            COUNT=0            break        fi    donedoneecho "OK!"echo "PID: $PIDS"

④. restart.sh

#!/bin/bashcd `dirname $0`./stop.sh./start.sh

⑤. server.sh

#!/bin/bashcd `dirname $0`if [ "$1" = "start" ]; then  ./start.shelse  if [ "$1" = "stop" ]; then    ./stop.sh  else    if [ "$1" = "debug" ]; then      ./start.sh debug    else      if [ "$1" = "restart" ]; then        ./restart.sh      else        if [ "$1" = "dump" ]; then          ./dump.sh        else          echo "ERROR: Please input argument: start or stop or debug or restart or dump"            exit 1        fi      fi    fi  fifi

⑥. dump.sh

#!/bin/bashcd `dirname $0`BIN_DIR=`pwd`cd ..DEPLOY_DIR=`pwd`CONF_DIR=$DEPLOY_DIR/confSERVER_NAME=`sed '/dubbo.application.name/!d;s/.*=//' conf/dubbo.properties | tr -d '\r'`LOGS_FILE=`sed '/dubbo.log4j.file/!d;s/.*=//' conf/dubbo.properties | tr -d '\r'`if [ -z "$SERVER_NAME" ]; then  SERVER_NAME=`hostname`fiPIDS=`ps -f | grep java | grep "$CONF_DIR" |awk '{print $2}'`if [ -z "$PIDS" ]; then    echo "ERROR: The $SERVER_NAME does not started!"    exit 1fiLOGS_DIR=""if [ -n "$LOGS_FILE" ]; then  LOGS_DIR=`dirname $LOGS_FILE`else  LOGS_DIR=$DEPLOY_DIR/logsfiif [ ! -d $LOGS_DIR ]; then  mkdir $LOGS_DIRfiDUMP_DIR=$LOGS_DIR/dumpif [ ! -d $DUMP_DIR ]; then  mkdir $DUMP_DIRfiDUMP_DATE=`date +%Y%m%d%H%M%S`DATE_DIR=$DUMP_DIR/$DUMP_DATEif [ ! -d $DATE_DIR ]; then  mkdir $DATE_DIRfiecho -e "Dumping the $SERVER_NAME ...\c"for PID in $PIDS ; do  jstack $PID > $DATE_DIR/jstack-$PID.dump 2>&1  echo -e ".\c"  jinfo $PID > $DATE_DIR/jinfo-$PID.dump 2>&1  echo -e ".\c"  jstat -gcutil $PID > $DATE_DIR/jstat-gcutil-$PID.dump 2>&1  echo -e ".\c"  jstat -gccapacity $PID > $DATE_DIR/jstat-gccapacity-$PID.dump 2>&1  echo -e ".\c"  jmap $PID > $DATE_DIR/jmap-$PID.dump 2>&1  echo -e ".\c"  jmap -heap $PID > $DATE_DIR/jmap-heap-$PID.dump 2>&1  echo -e ".\c"  jmap -histo $PID > $DATE_DIR/jmap-histo-$PID.dump 2>&1  echo -e ".\c"  if [ -r /usr/sbin/lsof ]; then  /usr/sbin/lsof -p $PID > $DATE_DIR/lsof-$PID.dump  echo -e ".\c"  fidoneif [ -r /bin/netstat ]; then/bin/netstat -an > $DATE_DIR/netstat.dump 2>&1echo -e ".\c"fiif [ -r /usr/bin/iostat ]; then/usr/bin/iostat > $DATE_DIR/iostat.dump 2>&1echo -e ".\c"fiif [ -r /usr/bin/mpstat ]; then/usr/bin/mpstat > $DATE_DIR/mpstat.dump 2>&1echo -e ".\c"fiif [ -r /usr/bin/vmstat ]; then/usr/bin/vmstat > $DATE_DIR/vmstat.dump 2>&1echo -e ".\c"fiif [ -r /usr/bin/free ]; then/usr/bin/free -t > $DATE_DIR/free.dump 2>&1echo -e ".\c"fiif [ -r /usr/bin/sar ]; then/usr/bin/sar > $DATE_DIR/sar.dump 2>&1echo -e ".\c"fiif [ -r /usr/bin/uptime ]; then/usr/bin/uptime > $DATE_DIR/uptime.dump 2>&1echo -e ".\c"fiecho "OK!"echo "DUMP: $DATE_DIR"

至于这些文件是干嘛的，相信作为一个程序猿不用老夫一一解释了，聪明如您，一定一眼就能看出来了，如果您的shell水平目前还不够，可以先看看老夫的这篇文章，看完之后再看这几个脚本可以说完全无压力。

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作 者： Bridge Li，http://www.bridgeli.cn

原文链接： http://www.bridgeli.cn/archives/236

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