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GREYS PROTOCOL
oldmanpushcart@gmail.com edited this page Oct 6, 2015
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GREYS-PROTOCOL（以下简称GP协议）定义了一套用于GREYS软件C/S模型的通讯协议，利用这套协议客户端和服务端能正常的完成交互，从达到操作GREYS的目的。
本协议在设计过程中得到了以下网友的支持
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###请求报文标准结构###
字段说明 字段长度 协议版本 2 Byte 请求序列 4 Byte 请求类型 2 Byte 长度 4 Byte 数据 n Byte -
###应答报文标准结构###
字段说明 字段长度 请求序列 4 Byte 应答序列 4 Byte 返回码 4 Byte 长度 4 Byte 数据 n Byte -
###协议交互流程###
+--------+ +--------+ | Client | | Server | +--------+ +--------+ | | | | + > > > > > > > > > > > > > > > > + | [REQ.send_id=1] | | [REQ.exec_type='monitor'] | | | | | | | + < < < < < < < < < < < < < < < < + | [RSP.send_id=1] | | [RSP.resp_id=1] | | [RSP.resp_type=/CONTINUE/] | | [RSP.resp_data=/DATA/] | | | | | | | + > > > > > > > > > > > > > > > > + | [REQ.send_id=2] | | [REQ.exec_type='version'] | | | | | | | + < < < < < < < < < < < < < < < < + | [RSP.send_id=1] | | [RSP.resp_id=2] | | [RSP.resp_type=/CONTINUE/] | | [RSP.resp_data=/DATA/] | | | | | | | + < < < < < < < < < < < < < < < < + | [RSP.send_id=1] | | [RSP.resp_id=3] | | [RSP.resp_type=/END/] | | [RSP.resp_data=/DATA/] | | | | | | | + < < < < < < < < < < < < < < < < + | [RSP.send_id=2] | | [RSP.resp_id=4] | | [RSP.resp_type=/END/] | | [RSP.resp_data=/DATA/] | | | | | | | - - -
###协议版本###
GP协议要求能做到向下版本的兼容，表达当前请求的协议版本号。
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###关键字段解释###
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请求序列
GP协议采用多路复用的方式来完成协议通讯，所以使用
应答报文.请求序列==请求报文.请求序列来完成请求报文和应答报文的关联。GP协议对请求序列有以下的约定
- 请求序列由请求端发起，服务端在应答该请求的时候必须将该对应请求的序列ID返回
- 请求序列在协议中定义为INT(4B)，允许溢出成负数
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应答序列
GREYS命令中有很多异步命令，比如
watch/tt/monitor，当客户端请求发出后，后续的数据推送将由服务端发送多个应答报文来完成。GP协议对应答序列有以下的约定
- 应答序列由服务端发起
- 应答序列在协议中定义为INT(4B)，允许溢出成负数
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请求类型
服务端根据不同的请求类型，从而决定执行操作和返回对应的响应报文。
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###请求类型###
类型值 类型说明 0x01 心跳 0x02 获取服务端版本 0x03 监控方法调用 0x04 重置增强类 0x05 搜索已加载类 0x06 搜索已经加载类方法 -
###返回码###
标记应答协议的状态。
返回码 成功 结束 码值说明 0x00 Y Y 全部成功 0x01 Y N 部分成功，有后续应答 0x10 N Y 发生未知错误 0x11 N Y 请求协议版本不支持 0x12 N Y 请求类型不支持
心跳协议主要用于维持服务端的会话链接，如果客户端没有在指定的时间发起心跳包，则服务端有权主动断开客户端当前链接，同时中止当前链接上所关联的所有任务。
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请求
心跳请求无需数据内容
{} -
应答
心跳应答无需数据内容
{}
返回当前服务端软件版本。
对应
version命令
-
请求
版本请求无请求数据内容
{} -
应答
版本应答返回当前服务器版本
{ "version": "1.8.0.0" }
对应
monitor命令
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请求
{ "class-pattern":"com.taobao.*", "method-pattern":"query*", "cycle":"120", "is-regex":"false" } -
应答
{ "affect": { "class-count":"100", "method-count":"50" }, "items": [ { "timestamp":"1443108198994", "class":"org.apache.commons.lang3.StringUtils", "method":"isNotBlank", "total":"100", "success":"90", "fail":"10", "rt":"500", "fail-rate":"0.1" } ] }
对应
reset命令
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请求
{ "class-pattern":"com.taobao.*", "is-regex":"false" } -
应答
{ "affect": { "row-count":"100" } }
对应
sc命令
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请求
{ "class-pattern":"com.alibaba.AgentTest", "is-regex":"false", "is-display-fields":"true", "is-display-detail":"true" } -
应答
{ "items": [ { "classname":"com.alibaba.AgentTest", "detail": { "code-source":"/Users/vlinux/temp/agent-test/target/", "is-interface":"false", "is-annotation":"false", "is-enum":"false", "is-anonymous-class":"false", "is-array":"false", "is-local-class":"false", "is-member-class":"false", "is-primitive":"false", "is-synthetic":"false", "modifier":"1", "annotations": [ "com.github.ompc.greys.core.command.annotation.Cmd" ], "interfaces": [ "com.github.ompc.greys.core.command.Command" ], "super-class":"java.lang.Object", "class-loader": [ "com.github.ompc.greys.agent.GreysClassLoader@7d64a7f2", "sun.misc.Launcher$AppClassLoader@58644d46", "sun.misc.Launcher$ExtClassLoader@7ea987ac" ] }, "fields": [ { "modifier":"5", "type":"java.lang.String", "name":"DEFAULT_PROMPT", "value":"ga?>" }, { "modifier":"5", "type":"java.lang.String", "name":"ABORT_MSG", "value":"Press Ctrl+D to abort." }, { "modifier":"5", "type":"java.lang.String", "name":"SPY_CLASSNAME", "value":"com.github.ompc.greys.agent.Spy" } ] }, ] }
对应
sm命令
-
请求
{ "class-pattern":"com.github.ompc.greys.core.util.GaStringUtils", "method-pattern":"*", "is-regex":"false", "is-display-fields":"true", "is-display-detail":"true" } -
应答
{ "items": [ { "classname":"com.github.ompc.greys.core.util.GaStringUtils", "methods": [ { "method-name":"tranModifier", "modifier":"5", "annotation":[], "exception":[], "parameters": [ "int" ], "return":"java.lang.String" }, { "method-name":"getLogo", "modifier":"5", "annotation":[], "exception": [ "java.io.IOException" ], "parameters":[], "return":"java.lang.String" } ] } ] }
返回服务端所有会话状态
对应
session命令
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请求
{} -
应答
{ "pid":"79321", "items": [ { "session-id":"1", "duration":"300000", "charset":"utf-8", "client-address":"127.0.0.1:64702", "server-address":"127.0.0.1:3658" } ] }
返回指定方法调用堆栈
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请求
{ "class-pattern":"com.github.ompc.greys.core.util.GaStringUtils", "method-pattern":"*", "condition-express":"true", "is-regex":"false", "limit":"-1" } -
应答
{ "thread-name":"main", "thread-id":"0x1", "is-daemon":"false", "priority":"5", "items": [ { "classname":"com.alibaba.AgentTest", "method-name":"print", "filename":"AgentTest.java", "line-number":"-1" }, { "classname":"sun.reflect.NativeConstructorAccessorImpl", "method-name":"newInstance0", "filename":"NativeConstructorAccessorImpl.java", "line-number":"-2" }, { "classname":"sun.reflect.NativeConstructorAccessorImpl", "method-name":"newInstance", "filename":"NativeConstructorAccessorImpl.java", "line-number":"62" }, { "classname":"sun.reflect.DelegatingConstructorAccessorImpl", "method-name":"newInstance", "filename":"DelegatingConstructorAccessorImpl.java", "line-number":"45" }, { "classname":"java.lang.reflect.Constructor", "method-name":"newInstance", "filename":"Constructor.java", "line-number":"408" }, { "classname":"java.lang.Class", "method-name":"newInstance", "filename":"Class.java", "line-number":"438" }, { "classname":"com.alibaba.AgentTest", "method-name":"main", "filename":"AgentTest.java", "line-number":"122" } ] }
对应
tt -l和tt -s命令
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请求
{ "condition-express":"true" } -
应答
{ "items": [ { "index":"1000", "timestamp":"2015-09-27 10:17:25", "cost":"1", "is-return":"true", "is-exception":"false", "object":"0x4b1210ee", "classname":"com.alibaba.AgentTest", "method-name":"print" }, { "index":"1001", "timestamp":"2015-09-27 10:17:26", "cost":"2", "is-return":"true", "is-exception":"false", "object":"0x4b1210ee", "classname":"com.alibaba.AgentTest", "method-name":"print" } ] }
对应
tt -i命令
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请求
{ "index":"1003", "expend": { "level":"1", "format":"json" } } -
应答
{ "index":"1003", "timestamp":"2015-09-27 22:22:56", "cost":"1", "object":"0x4b1210ee", "classname":"com.alibaba.AgentTest", "method-name":"printAddress", "is-return":"false", "is-exception":"true", "parameters": [ '{"addressId":20808,"addressName":"ADDRESS","avg":2.0}', "null" ], "exception":'{"detailMessage":"test","stackTrace":[{"declaringClass":"com.alibaba.AgentTest","methodName":"printAddress","fileName":"AgentTest.java","lineNumber":86},{"declaringClass":"com.alibaba.AgentTest","methodName":"\u003cinit\u003e","fileName":"AgentTest.java","lineNumber":68},{"declaringClass":"sun.reflect.NativeConstructorAccessorImpl","methodName":"newInstance0","fileName":"NativeConstructorAccessorImpl.java","lineNumber":-2},{"declaringClass":"sun.reflect.NativeConstructorAccessorImpl","methodName":"newInstance","fileName":"NativeConstructorAccessorImpl.java","lineNumber":62},{"declaringClass":"sun.reflect.DelegatingConstructorAccessorImpl","methodName":"newInstance","fileName":"DelegatingConstructorAccessorImpl.java","lineNumber":45},{"declaringClass":"java.lang.reflect.Constructor","methodName":"newInstance","fileName":"Constructor.java","lineNumber":408},{"declaringClass":"java.lang.Class","methodName":"newInstance","fileName":"Class.java","lineNumber":438},{"declaringClass":"com.alibaba.AgentTest","methodName":"main","fileName":"AgentTest.java","lineNumber":122}],"suppressedExceptions":[]}' }