Solr4.8.0源码分析(4)之Eclipse Solr调试环境搭建
由于公司里的Solr调试都是用远程jpda进行的，但是家里只有一台电脑所以不能jpda进行调试，这是因为jpda的端口冲突。所以只能在Eclipse 搭建Solr的环境，折腾了一小时终于完成了。
1. JDPA远程调试
搭建换完成Solr环境后，对${TOMCAT_HOME}/bin/startup.sh 最后一行进行修改，如下所示:
set JPDA_ADDRESS=
exec "$PRGDIR"/"$EXECUTABLE" jpda start "$@"
后在eclipse新建debug配置，这样就可以远程调试solr了，要注意服务器端Solr.war包的代码与eclipse的Solr代码一致。
二.Eclipse 的Solr环境搭建
2.1 Solr的编译
进入solr的目录，运行ant：
:solr-4.8. rcf$ ant
Buildfile: /Users/rcf/workspace/java/solr/solr-4.8./build.xml -projecthelp:
[-] Buildfile: /Users/rcf/workspace/java/solr/solr-4.8./build.xml Main targets: check-svn-working-copy Checks the status of the SVN working copy
clean Clean Lucene and Solr build dirs
clean-eclipse Removes all Eclipse configuration files
clean-idea Removes all IntelliJ IDEA configuration files
clean-jars Remove all JAR files from lib folders in the checkout
clean-maven-build Clean up Maven POMs in working copy
clean-netbeans Removes all Netbeans configuration files
compile Compile Lucene and Solr
compile-test Compile Lucene and Solr tests and test-frameworks
documentation Generate Lucene and Solr Documentation
documentation-lint Validates the generated documentation (HTML errors, broken links,...)
eclipse Setup Eclipse configuration
generate-maven-artifacts Generate Maven Artifacts for Lucene and Solr
get-maven-poms Copy Maven POMs from dev-tools/maven/ to maven-build/
idea Setup IntelliJ IDEA configuration
ivy-bootstrap Download and install Ivy in the users ant lib dir
jar Build Lucene and Solr Jar files
jar-checksums Recompute SHA1 checksums for all JAR files.
jar-src Build Lucene and Solr Source Jar files
netbeans Setup Netbeans configuration
nightly-smoke Builds an unsigned release and smoke tests it
pitest Run PITest on both Lucene and Solr
precommit Run basic checks before committing
rat-sources Runs rat across all sources and tests
regenerate Runs all code regenerators
remove-maven-artifacts Removes all Lucene/Solr Maven artifacts from the local repository
resolve Resolves all dependencies
run-clover Runs all tests to measure coverage and generates report (pass "ANT_OPTS=-Xmx1536M" as environment)
run-maven-build Runs the Maven build using automatically generated POMs
test Test both Lucene and Solr
test-help Test runner help
test-with-heapdumps Runs tests with heap dumps on OOM enabled (if VM supports this)
validate Validate dependencies, licenses, etc.
validate-maven-dependencies Validates maven dependencies, licenses, etc.
Default target: -projecthelp BUILD SUCCESSFUL
Total time: seconds
运行 ant eclipse就可以对solr源码进行编译成eclipse工程。在编译ant eclipse时候可能会失败，这是可以运行 ant ivy-bootstrap
2.2 将eclipse工程转换成WEB工程
将编译好的solr工程导入eclipse，后右键点击Properties，选中Project Facets,如图所示
选择OK后，就转换Solr的WEB工程了，这是有些xml文件会出现错误的红叉叉，不用管它。
2.3 solr.war包生成
进入solr/solr目录，运行ant dist,如下图所示
:~ rcf$ cd /Users/rcf/workspace/java/solr/solr-4.8./solr
:solr rcf$ ls
CHANGES.txt README.txt build.xml contrib docs package solrj
LICENSE.txt SYSTEM_REQUIREMENTS.txt cloud-dev core example scripts test-framework
NOTICE.txt build common-build.xml dist licenses site webapp
:solr rcf$ ant dist
Buildfile: /Users/rcf/workspace/java/solr/solr-4.8./solr/build.xml
[echo] Building solr... init-dist: dist-solrj:
[echo] Building solr-solrj... check-lucene-core-uptodate: jar-lucene-core:
编译完成后会再dist目录下生产solr.war包
2.4 solr配置
1. 将solr.war copy到solr/WebContent目录下并进行解压。
2. 在WebRoot/META-INF目下创建context.xml 文件，配置solr/home。
<?xml version='1.0' encoding='utf-8'?>
<Context>
<Environment name="solr/home" type="java.lang.String" value="/Users/rcf/workspace/java/solr/Solr" override="true" />
</Context>
3. 创建solr/home,在里面放入solr.xml
<?xml version="1.0" encoding="UTF-8" ?>
<solr>
<solrcloud>
<str name="host">${host:}</str>
<int name="hostPort">${jetty.port:}</int>
<str name="hostContext">${hostContext:solr}</str>
<int name="zkClientTimeout">${zkClientTimeout:}</int>
<bool name="genericCoreNodeNames">${genericCoreNodeNames:true}</bool>
</solrcloud>
<shardHandlerFactory name="shardHandlerFactory" class="HttpShardHandlerFactory">
<int name="socketTimeout">${socketTimeout:}</int>
<int name="connTimeout">${connTimeout:}</int>
</shardHandlerFactory>
</solr>
4.这样就可以进行调试solr了。
三.Solr环境搭建
真实的solr环境搭建，跟eclipse的环境搭建类似，主要分为以下几步：
1. 对solr源码进行编译，ant dist生成solr.war
2. 下载tomcat并进行安装(tomcat的配置并不需要修改)
3. 将solr.war 复制到 ${TOMCAT_HOME}/wepapps目录下并将solr.war包解压成solr目录
4. 将solr/dist目录下的jar包全部拷贝到${TOMCAT_HOME}/wepapps/solr/lib目录下
5. 在${TOMCAT_HOME}/conf/Catalina/localhost/创建solr.xml,里面设置了solr/home
<Context docBase="/Users/rcf/workspace/java/tomcat/apache-tomcat-8.0.9/webapps/solr.war" debug="" crossContext="true" >
<Environment name="solr/home" type="java.lang.String" value="/Users/rcf/workspace/java/solr/Solr" override="true" />
</Context>
6. 创建solr/home，也创建solr.xml
<?xml version="1.0" encoding="UTF-8" ?>
<solr>
<solrcloud>
<str name="host">${host:}</str>
<int name="hostPort">${jetty.port:}</int>
<str name="hostContext">${hostContext:solr}</str>
<int name="zkClientTimeout">${zkClientTimeout:}</int>
<bool name="genericCoreNodeNames">${genericCoreNodeNames:true}</bool>
</solrcloud>
<shardHandlerFactory name="shardHandlerFactory" class="HttpShardHandlerFactory">
<int name="socketTimeout">${socketTimeout:}</int>
<int name="connTimeout">${connTimeout:}</int>
</shardHandlerFactory>
</solr>
7. 在将solr源码包里的log4j.properties 拷贝到${TOMCAT_HOME}/lib目录下，并修改log文件路径
# Logging level
solr.log=/Users/rcf/workspace/java/tomcat/apache-tomcat-8.0./logs
log4j.rootLogger=INFO, file, CONSOLE log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%-4r [%t] %-5p %c %x \u2013 %m%n #- size rotation with log cleanup.
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.MaxFileSize=4MB
log4j.appender.file.MaxBackupIndex= #- File to log to and log format
log4j.appender.file.File=${solr.log}/solr.log
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%-5p - %d{yyyy-MM-dd HH:mm:ss.SSS}; %C; %m\n log4j.logger.org.apache.zookeeper=WARN
log4j.logger.org.apache.hadoop=WARN # set to INFO to enable infostream log messages
log4j.logger.org.apache.solr.update.LoggingInfoStream=OFF