Greys是一个JVM进程执行过程中的异常诊断神器。 在不中断程序执行的情况下轻松完成JVM相关问题排查工作。目前Greys仅支持Linux/Unix/Mac上的Java6+，Windows暂时无法支持。
使用场景
例如打logger，开发环境一般有五种情况：
1、异常情况，打error
2、警告情况，打warm
3、非本系统调用入口、任务等，logger入参和结果
4、本系统调用，debug入参和结果
5、必要信息，info一下
而在生产环境，一般不会开启debug日志。这时，出现问题如何debug？没错，用debug诊断神器Greys完美解决。
安装Greys
[root@mvxl52738 tmp]# curl -sLk http://ompc.oss.aliyuncs.com/greys/install.sh|bash
# or
[root@mvxl52738 tmp]# wget http://ompc.oss.aliyuncs.com/greys/release/greys-stable-bin.zip
[root@mvxl52738 tmp]# unzip greys-stable-bin.zip
[root@mvxl52738 tmp]# cd greys
[root@mvxl52738 tmp]# sh ./install-local.sh
启动关闭Greys
# ./greys.sh <PID>[@IP:PORT]
[root@mvxl52738 ]# greys.sh 57951
_
____ ____ _____ _ _ ___ _____ _____ ____ _____ _| |_ ___ ____ _ _
/ _ |/ ___) ___ | | | |/___|_____|____ | _ \(____ (_ _) _ \| \| | | |
( (_| | | | ____| |_| |___ | / ___ | | | / ___ | | || |_| | | | | |_| |
\___ |_| |_____)\__ (___/ \_____|_| |_\_____| \__)___/|_|_|_|\__ |
(_____| (____/ (____/
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|v|e|r|s|i|o|n|:|1|.|7|.|6|.|6|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
ga?>help
# 查看帮助文档
ga?>shutdown
Greys Server is shut down.
远程连接Greys
远程连接，当然也是可以的。配置对应的ip和端口，就能远程协助了。
[root@mvxl52740 greys]# ./greys.sh @10.18.40.183:3658
_
____ ____ _____ _ _ ___ _____ _____ ____ _____ _| |_ ___ ____ _ _
/ _ |/ ___) ___ | | | |/___|_____|____ | _ \(____ (_ _) _ \| \| | | |
( (_| | | | ____| |_| |___ | / ___ | | | / ___ | | || |_| | | | | |_| |
\___ |_| |_____)\__ (___/ \_____|_| |_\_____| \__)___/|_|_|_|\__ |
(_____| (____/ (____/
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|v|e|r|s|i|o|n|:|1|.|7|.|6|.|6|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
ga?>
ga?>tt -t -n 3 *OrderReportFacadeImpl *
Press Ctrl+D to abort.
Affect(class-cnt:1 , method-cnt:12) cost in 68 ms.
+----------+------------+----------------------+------------+----------+----------+-----------------+--------------------------------+--------------------------------+
| INDEX | PROCESS-ID | TIMESTAMP | COST(ms) | IS-RET | IS-EXP | OBJECT | CLASS | METHOD |
+----------+------------+----------------------+------------+----------+----------+-----------------+--------------------------------+--------------------------------+
| 1003 | 1003 | 2018-09-15 17:40:24 | 14 | true | false | 0x68d36ec | OrderReportFacadeImpl | lambda$selectItem$3 |
+----------+------------+----------------------+------------+----------+----------+-----------------+--------------------------------+--------------------------------+
| 1004 | 1004 | 2018-09-15 17:40:24 | 15 | true | false | 0x68d36ec | OrderReportFacadeImpl | selectItem |
常见用法
monitor命令
对匹配class-pattern／method-pattern的类.方法的调用进行监控。
ga?>monitor -c 5 *OrderReportFacadeImpl selectItem
+---------------------+------------------------------------------------------------+------------+-------+---------+------+-----------+------------+------------+------------+
| TIMESTAMP | CLASS | METHOD | TOTAL | SUCCESS | FAIL | FAIL-RATE | AVG-RT(ms) | MIN-RT(ms) | MAX-RT(ms) |
+---------------------+------------------------------------------------------------+------------+-------+---------+------+-----------+------------+------------+------------+
| 2018-09-15 14:55:08 | com.meicloud.ecu.fc.impl.facade.impl.OrderReportFacadeImpl | selectItem | 1 | 1 | 0 | 00.00% | 22.00 | 22 | 22 |
+---------------------+------------------------------------------------------------+------------+-------+---------+------+-----------+------------+------------+------------+
+---------------------+------------------------------------------------------------+------------+-------+---------+------+-----------+------------+------------+------------+
| TIMESTAMP | CLASS | METHOD | TOTAL | SUCCESS | FAIL | FAIL-RATE | AVG-RT(ms) | MIN-RT(ms) | MAX-RT(ms) |
+---------------------+------------------------------------------------------------+------------+-------+---------+------+-----------+------------+------------+------------+
| 2018-09-15 14:55:13 | com.meicloud.ecu.fc.impl.facade.impl.OrderReportFacadeImpl | selectItem | 3 | 3 | 0 | 00.00% | 11.67 | 11 | 13 |
+---------------------+------------------------------------------------------------+------------+-------+---------+------+-----------+------------+------------+------------+
trace和ptrace命令
渲染和统计整个调用链路上的所有性能开销和追踪调用链路。但是，动态代理好像追不进去。所以，Spring注入的调用追踪不了。
ga?>ptrace -t *OrderReportFacadeImpl *
Press Ctrl+D to abort.
Affect(class-cnt:1 , method-cnt:12) cost in 47 ms.
`---+pTracing for : thread_name="DubboServerHandler-10.18.40.183:20888-thread-21" thread_id=0x21e;is_daemon=true;priority=5;process=1003;
`---+[36,36ms]com.meicloud.ecu.fc.impl.facade.impl.OrderReportFacadeImpl:selectLog(); index=1006;
`---[33,17ms]com.meicloud.ecu.fc.impl.facade.impl.OrderReportFacadeImpl:lambda$selectLog$5(); index=1005;
+----------+------------+----------------------+------------+----------+----------+-----------------+--------------------------------+--------------------------------+
| INDEX | PROCESS-ID | TIMESTAMP | COST(ms) | IS-RET | IS-EXP | OBJECT | CLASS | METHOD |
+----------+------------+----------------------+------------+----------+----------+-----------------+--------------------------------+--------------------------------+
| 1005 | 1003 | 2018-09-15 15:03:54 | 16 | true | false | 0x68d36ec | OrderReportFacadeImpl | lambda$selectLog$5 |
+----------+------------+----------------------+------------+----------+----------+-----------------+--------------------------------+--------------------------------+
| 1006 | 1003 | 2018-09-15 15:03:54 | 20 | true | false | 0x68d36ec | OrderReportFacadeImpl | selectLog |
+----------+------------+----------------------+------------+----------+----------+-----------------+--------------------------------+--------------------------------+
tt命令（重点掌握）
时间隧道命令记录下当时方法调用的所有入参和返回值、抛出的异常
# 记录下当前方法的每次调用环境现场
ga?>tt -t -n 3 *OrderReportFacadeImpl *
Press Ctrl+D to abort.
Affect(class-cnt:1 , method-cnt:12) cost in 70 ms.
+----------+------------+----------------------+------------+----------+----------+-----------------+--------------------------------+--------------------------------+
| INDEX | PROCESS-ID | TIMESTAMP | COST(ms) | IS-RET | IS-EXP | OBJECT | CLASS | METHOD |
+----------+------------+----------------------+------------+----------+----------+-----------------+--------------------------------+--------------------------------+
| 1008 | 1005 | 2018-09-15 16:49:28 | 189 | false | true | 0x68d36ec | OrderReportFacadeImpl | lambda$selectItem$3 |
+----------+------------+----------------------+------------+----------+----------+-----------------+--------------------------------+--------------------------------+
| 1009 | 1006 | 2018-09-15 16:49:28 | 192 | true | false | 0x68d36ec | OrderReportFacadeImpl | selectItem |
ga?>tt -l
+----------+------------+----------------------+------------+----------+----------+-----------------+--------------------------------+--------------------------------+
| INDEX | PROCESS-ID | TIMESTAMP | COST(ms) | IS-RET | IS-EXP | OBJECT | CLASS | METHOD |
+----------+------------+----------------------+------------+----------+----------+-----------------+--------------------------------+--------------------------------+
| 1001 | 1001 | 2018-09-15 15:02:10 | 15 | true | false | 0x68d36ec | OrderReportFacadeImpl | lambda$selectItem$3 |
+----------+------------+----------------------+------------+----------+----------+-----------------+--------------------------------+--------------------------------+
| 1002 | 1001 | 2018-09-15 15:02:10 | 17 | true | false | 0x68d36ec | OrderReportFacadeImpl | selectItem |
+----------+------------+----------------------+------------+----------+----------+-----------------+--------------------------------+--------------------------------+
| 1003 | 1002 | 2018-09-15 15:02:46 | 13 | true | false | 0x68d36ec | OrderReportFacadeImpl | lambda$selectItem$3 |
+----------+------------+----------------------+------------+----------+----------+-----------------+--------------------------------+--------------------------------+
| 1004 | 1002 | 2018-09-15 15:02:46 | 14 | true | false | 0x68d36ec | OrderReportFacadeImpl | selectItem |
+----------+------------+----------------------+------------+----------+----------+-----------------+--------------------------------+--------------------------------+
| 1005 | 1003 | 2018-09-15 15:03:54 | 16 | true | false | 0x68d36ec | OrderReportFacadeImpl | lambda$selectLog$5 |
+----------+------------+----------------------+------------+----------+----------+-----------------+--------------------------------+--------------------------------+
| 1006 | 1003 | 2018-09-15 15:03:54 | 20 | true | false | 0x68d36ec | OrderReportFacadeImpl | selectLog |
+----------+------------+----------------------+------------+----------+----------+-----------------+--------------------------------+--------------------------------+
| 1007 | 1004 | 2018-09-15 16:44:45 | 14 | true | false | 0x68d36ec | OrderReportFacadeImpl | sendItem2SAP |
+----------+------------+----------------------+------------+----------+----------+-----------------+--------------------------------+--------------------------------+
| 1008 | 1005 | 2018-09-15 16:49:28 | 189 | false | true | 0x68d36ec | OrderReportFacadeImpl | lambda$selectItem$3 |
+----------+------------+----------------------+------------+----------+----------+-----------------+--------------------------------+--------------------------------+
| 1009 | 1006 | 2018-09-15 16:49:28 | 192 | true | false | 0x68d36ec | OrderReportFacadeImpl | selectItem |
+----------+------------+----------------------+------------+----------+----------+-----------------+--------------------------------+--------------------------------+
# 查看调用信息
ga?>tt -i 1006 -x 3
# 查看异常信息
ga?>tt -i 1008 -x 3
+-----------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+
| INDEX | 1008 |
+-----------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+
| PROCESS-ID | 1005 |
+-----------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+
| GMT-CREATE | 2018-09-15 16:49:28 |
+-----------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+
| COST(ms) | 189 |
+-----------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+
| OBJECT | 0x68d36ec |
+-----------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+
| CLASS | com.meicloud.ecu.fc.impl.facade.impl.OrderReportFacadeImpl |
+-----------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+
| METHOD | lambda$selectItem$3 |
+-----------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+
| IS-RETURN | false |
+-----------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+
| IS-EXCEPTION | true |
+-----------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+
| PARAMETERS[0] | OrderReportRequest(reportId=null, reportIdList=null, orderSubId=null, orderId=null, shopIdList=[1], startTime=Mon Sep 03 16:49:15 CST 2018, endTime=Sa |
| | t Sep 15 16:49:20 CST 2018, clientIdList=null, skuTypeList=null, packingId=null, companyCodeList=null, salesTypeList=[], statusList=[], applyId=null, |
| | exceptionType=0) |
+-----------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+
| PARAMETERS[1] | 0 |
+-----------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+
| PARAMETERS[2] | 10 |
+-----------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+
| PARAMETERS[3] | CommonResponse(result=null) |
+-----------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+
| THROW-EXCEPTION | org.springframework.jdbc.BadSqlGrammarException: |
| | ### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'shop_id' in 'where clause' |
| | ### The error may exist in file [/apps/zoomlion/ecu-fc-sales/tomcat-9008/webapps/fc-sales/WEB-INF/classes/sqlmaps/fcsqlmaps/custom/CustomOrderReportMa |
| | pper.xml] |
| | ### The error may involve com.meicloud.ecu.fc.impl.model.dao.fc.custom.CustomOrderReportMapper.selectByEntity-Inline |
| | ### The error occurred while setting parameters |
| | ### SQL: SELECT count(*) FROM f_order_report AS item LEFT OUTER JOIN f_order_report_extend AS extend ON (item.report_id = extend.report_id) WHERE (( |
| | (1 = 1) AND (shop_id IN ( ? ))) AND (consign_time >= ( ? ))) AND (consign_time < ( ? )) |
| | ### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'shop_id' in 'where clause' |
| | ; bad SQL grammar []; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'shop_id' in 'where clause' |
| | at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.doTranslate(SQLErrorCodeSQLExceptionTranslator.java:237) |
| | at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:72) |
| | at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:73) |
| | at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:371) |
| | at com.sun.proxy.$Proxy22.selectList(Unknown Source) |
| | at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:198) |
| | at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:119) |
| | at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:63) |
| | at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:52) |
| | at com.sun.proxy.$Proxy23.selectByEntity(Unknown Source) |
| | at com.meicloud.ecu.fc.impl.service.impl.OrderReportServiceImpl.selectItem(OrderReportServiceImpl.java:224) |
| | at com.meicloud.ecu.fc.impl.service.impl.OrderReportServiceImpl$$FastClassBySpringCGLIB$$60343937.invoke(<generated>) |
| | at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) |
| | at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:629) |
| | at com.meicloud.ecu.fc.impl.service.impl.OrderReportServiceImpl$$EnhancerBySpringCGLIB$$9a3e9305.selectItem(<generated>) |
| | at com.meicloud.ecu.fc.impl.facade.impl.OrderReportFacadeImpl.lambda$selectItem$3(OrderReportFacadeImpl.java:122) |
| | at com.meicloud.ecu.fc.impl.utils.RespPackUtil.execInvokeService(RespPackUtil.java:31) |
| | at com.meicloud.ecu.fc.impl.facade.impl.OrderReportFacadeImpl.selectItem(OrderReportFacadeImpl.java:121) |
| | at com.alibaba.dubbo.common.bytecode.Wrapper4.invokeMethod(Wrapper4.java) |
| | at com.alibaba.dubbo.rpc.proxy.javassist.JavassistProxyFactory$1.doInvoke(JavassistProxyFactory.java:46) |
| | at com.alibaba.dubbo.rpc.proxy.AbstractProxyInvoker.invoke(AbstractProxyInvoker.java:72) |
| | at com.alibaba.dubbo.config.invoker.DelegateProviderMetaDataInvoker.invoke(DelegateProviderMetaDataInvoker.java:36) |
| | at com.alibaba.dubbo.rpc.protocol.InvokerWrapper.invoke(InvokerWrapper.java:53) |
| | at com.alibaba.dubbo.rpc.filter.ExceptionFilter.invoke(ExceptionFilter.java:64) |
| | at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:69) |
| | at com.alibaba.dubbo.monitor.support.MonitorFilter.invoke(MonitorFilter.java:75) |
| | at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:69) |
| | at com.alibaba.dubbo.rpc.filter.TimeoutFilter.invoke(TimeoutFilter.java:42) |
| | at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:69) |
| | at com.alibaba.dubbo.rpc.protocol.dubbo.filter.TraceFilter.invoke(TraceFilter.java:78) |
| | at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:69) |
| | at com.alibaba.dubbo.rpc.filter.ContextFilter.invoke(ContextFilter.java:61) |
| | at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:69) |
| | at com.alibaba.dubbo.rpc.filter.GenericFilter.invoke(GenericFilter.java:132) |
| | at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:69) |
| | at com.alibaba.dubbo.rpc.filter.ClassLoaderFilter.invoke(ClassLoaderFilter.java:38) |
| | at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:69) |
| | at com.alibaba.dubbo.rpc.filter.EchoFilter.invoke(EchoFilter.java:38) |
| | at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:69) |
| | at com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol$1.reply(DubboProtocol.java:98) |
| | at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.handleRequest(HeaderExchangeHandler.java:98) |
| | at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.received(HeaderExchangeHandler.java:170) |
| | at com.alibaba.dubbo.remoting.transport.DecodeHandler.received(DecodeHandler.java:52) |
| | at com.alibaba.dubbo.remoting.transport.dispatcher.ChannelEventRunnable.run(ChannelEventRunnable.java:81) |
| | at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) |
| | at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) |
| | at java.lang.Thread.run(Thread.java:748) |
| | Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'shop_id' in 'where clause' |
| | at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) |
| | at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) |
| | at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) |
| | at java.lang.reflect.Constructor.newInstance(Constructor.java:423) |
| | at com.mysql.jdbc.Util.handleNewInstance(Util.java:409) |
| | at com.mysql.jdbc.Util.getInstance(Util.java:384) |
| | at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1052) |
| | at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4232) |
| | at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4164) |
| | at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2615) |
| | at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2776) |
| | at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2838) |
| | at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2082) |
| | at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:1307) |
| | at sun.reflect.GeneratedMethodAccessor99.invoke(Unknown Source) |
| | at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) |
| | at java.lang.reflect.Method.invoke(Method.java:498) |
| | at org.apache.ibatis.logging.jdbc.PreparedStatementLogger.invoke(PreparedStatementLogger.java:62) |
| | at com.sun.proxy.$Proxy59.execute(Unknown Source) |
| | at org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:59) |
| | at org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:73) |
| | at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:60) |
| | at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:267) |
| | at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:137) |
| | at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:96) |
| | at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:77) |
| | at sun.reflect.GeneratedMethodAccessor97.invoke(Unknown Source) |
| | at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) |
| | at java.lang.reflect.Method.invoke(Method.java:498) |
| | at org.apache.ibatis.plugin.Invocation.proceed(Invocation.java:49) |
| | at com.github.pagehelper.PageHelper.intercept(PageHelper.java:211) |
| | at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:60) |
| | at com.sun.proxy.$Proxy56.query(Unknown Source) |
| | at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:108) |
| | at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:102) |
| | at sun.reflect.GeneratedMethodAccessor163.invoke(Unknown Source) |
| | at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) |
| | at java.lang.reflect.Method.invoke(Method.java:498) |
| | at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:358) |
| | ... 43 more |
+-----------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+
| STACK | thread_name="DubboServerHandler-10.18.40.183:20888-thread-39" thread_id=0x239;is_daemon=true;priority=5; |
| | @com.meicloud.ecu.fc.impl.facade.impl.OrderReportFacadeImpl.lambda$selectItem$3(OrderReportFacadeImpl.java:124) |
| | at com.meicloud.ecu.fc.impl.utils.RespPackUtil.execInvokeService(RespPackUtil.java:31) |
| | at com.meicloud.ecu.fc.impl.facade.impl.OrderReportFacadeImpl.selectItem(OrderReportFacadeImpl.java:121) |
| | at com.alibaba.dubbo.common.bytecode.Wrapper4.invokeMethod(Wrapper4.java:-1) |
| | at com.alibaba.dubbo.rpc.proxy.javassist.JavassistProxyFactory$1.doInvoke(JavassistProxyFactory.java:46) |
| | at com.alibaba.dubbo.rpc.proxy.AbstractProxyInvoker.invoke(AbstractProxyInvoker.java:72) |
| | at com.alibaba.dubbo.config.invoker.DelegateProviderMetaDataInvoker.invoke(DelegateProviderMetaDataInvoker.java:36) |
| | at com.alibaba.dubbo.rpc.protocol.InvokerWrapper.invoke(InvokerWrapper.java:53) |
| | at com.alibaba.dubbo.rpc.filter.ExceptionFilter.invoke(ExceptionFilter.java:64) |
| | at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:69) |
| | at com.alibaba.dubbo.monitor.support.MonitorFilter.invoke(MonitorFilter.java:75) |
| | at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:69) |
| | at com.alibaba.dubbo.rpc.filter.TimeoutFilter.invoke(TimeoutFilter.java:42) |
| | at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:69) |
| | at com.alibaba.dubbo.rpc.protocol.dubbo.filter.TraceFilter.invoke(TraceFilter.java:78) |
| | at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:69) |
| | at com.alibaba.dubbo.rpc.filter.ContextFilter.invoke(ContextFilter.java:61) |
| | at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:69) |
| | at com.alibaba.dubbo.rpc.filter.GenericFilter.invoke(GenericFilter.java:132) |
| | at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:69) |
| | at com.alibaba.dubbo.rpc.filter.ClassLoaderFilter.invoke(ClassLoaderFilter.java:38) |
| | at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:69) |
| | at com.alibaba.dubbo.rpc.filter.EchoFilter.invoke(EchoFilter.java:38) |
| | at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:69) |
| | at com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol$1.reply(DubboProtocol.java:98) |
| | at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.handleRequest(HeaderExchangeHandler.java:98) |
| | at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.received(HeaderExchangeHandler.java:170) |
| | at com.alibaba.dubbo.remoting.transport.DecodeHandler.received(DecodeHandler.java:52) |
| | at com.alibaba.dubbo.remoting.transport.dispatcher.ChannelEventRunnable.run(ChannelEventRunnable.java:81) |
| | at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) |
| | at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) |
| | at java.lang.Thread.run(Thread.java:748) |
+-----------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+
# 重跑一次。
# 当你少少做了一些调整之后，你可能需要前端系统重新触发一次你的调用，此时得求爷爷告奶奶的需要前端配合联调的同学再次发起一次调用。而有些场景下，这个调用不是这么好触发的。
# tt命令由于保存了当时调用的所有现场信息，所以我们可以自己主动对一个INDEX编号的时间片自主发起一次调用，从而解放你的沟通成本。此时你需要-p参数。
ga?>tt -i 1006 -p
watch命令（tt命令已经包含了它）
能方便的让你观察到指定方法的调用情况。能观察到的范围为：返回值、抛出异常、入参，通过编写OGNL表达式进行对应变量的查看。
表达式核心变量
public class Advice {
// 本次调用类所在的ClassLoader
private final ClassLoader loader;
// 本次调用类的Class引用
private final Class<?> clazz;
// 本次调用方法反射引用
private final GaMethod method;
// 本次调用类的实例
private final Object target;
// 本次调用参数列表，这是一个数组，如果方法是无参方法则为空数组
private final Object[] params;
// 本次调用返回的对象。当且仅当isReturn==true成立时候有效，
// 表明方法调用是以正常返回的方式结束。
// 如果当前方法无返回值void，则值为null
private final Object returnObj;
// 本次调用抛出的异常。当且仅当isThrow==true成立时有效，
// 表明方法调用是以抛出异常的方式结束。
private final Throwable throwExp;
private final boolean isBefore;
private final boolean isThrow;
private final boolean isReturn;
// getter/setter
}
stack命令 （tt命令已经包含了它）
很多时候我们都知道一个方法被执行，但这个方法被执行的路径非常多。或者你根本就不知道这个方法是从那里被执行了，正在郁闷，正在彷徨。此时你需要的是stack命令。