SOFATracer 集成 Dubbo 后输出请求的链路数据格式，默认为 JSON 数据格式。
Dubbo 服务消费方摘要日志（dubbo-client-digest.log）
以 JSON 格式输出的数据，相应 key 的含义解释如下：
| key | 表达含义 |
|---|---|
| time | 日志打印时间 |
| local.app | 当前应用名 |
| traceId | TraceId |
| spanId | SpanId |
| span.kind | Span 类型 |
| result.code | 状态码 |
| current.thread.name | 当前线程名 |
| time.cost.milliseconds | span 耗时 |
| protocol | 协议 |
| service | 服务接口 |
| method | 调用方法 |
| invoke.type | 调用类型 |
| remote.host | 目标主机 |
| remote.port | 目标端口 |
| local.host | 本地主机 |
| client.serialize.time | 请求序列化时间 |
| client.deserialize.time | 响应反序列化时间 |
| req.size.bytes | Request Body 大小 |
| resp.size.bytes | Response Body 大小 |
| error | 错误信息 |
| sys.baggage | 系统透传的 baggage 数据 |
| biz.baggage | 业务透传的 baggage 数据 |
样例：
{"time":"2019-09-02 23:36:08.250","local.app":"dubbo-consumer","traceId":"1e27a79c156743856804410019644","spanId":"0","span.kind":"client","result.code":"00","current.thread.name":"http-nio-8080-exec-2","time.cost.milliseconds":"205ms","protocol":"dubbo","service":"com.glmapper.bridge.boot.service.HelloService","method":"SayHello","invoke.type":"sync","remote.host":"192.168.2.103","remote.port":"20880","local.host":"192.168.2.103","client.serialize.time":35,"client.deserialize.time":5,"req.size.bytes":336,"resp.size.bytes":48,"error":"","sys.baggage":"","biz.baggage":""}
Dubbo 服务提供方摘要日志（dubbo-server-digest.log）
以 JSON 格式输出的数据，相应 key 的含义解释如下：
| key | 表达含义 |
|---|---|
| time | 日志打印时间 |
| local.app | 当前应用名 |
| traceId | TraceId |
| spanId | SpanId |
| span.kind | Span 类型 |
| result.code | 状态码 |
| current.thread.name | 当前线程名 |
| time.cost.milliseconds | span 耗时 |
| protocol | 协议 |
| service | 服务接口 |
| method | 调用方法 |
| invoke.type | 调用类型 |
| local.host | 本地主机 |
| local.port | 本地端口 |
| server.serialize.time | 响应序列化时间 |
| server.deserialize.time | 请求反序列化时间 |
| req.size.bytes | Request Body 大小 |
| resp.size.bytes | Response Body 大小 |
| error | 错误信息 |
| sys.baggage | 系统透传的 baggage 数据 |
| biz.baggage | 业务透传的 baggage 数据 |
样例：
{"time":"2019-09-02 23:36:08.219","local.app":"dubbo-provider","traceId":"1e27a79c156743856804410019644","spanId":"0","span.kind":"server","result.code":"00","current.thread.name":"DubboServerHandler-192.168.2.103:20880-thread-2","time.cost.milliseconds":"9ms","protocol":"dubbo","service":"com.glmapper.bridge.boot.service.HelloService","method":"SayHello","local.host":"192.168.2.103","local.port":"62443","server.serialize.time":0,"server.deserialize.time":27,"req.size.bytes":336,"resp.size.bytes":0,"error":"","sys.baggage":"","biz.baggage":""}
Dubbo 统计日志
stat.key 即本段时间内的统计关键字集合，统一关键字集合唯一确定一组统计数据，包含local.app、service、和 method 字段.
| key | 表达含义 | |
| time | 日志打印时间 | |
| stat.key | local.app | 当前应用名 |
| method | 调用方法 | |
| service | 服务名 | |
| count | 本段时间内请求次数 | |
| total.cost.milliseconds | 本段时间内的请求总耗时（ms） | |
| success | 请求结果：Y 表示成功；N 表示失败 | |
| load.test | 压测标记：T 是压测；F 不是压测 | |
样例：
dubbo-client-stat.log
{"time":"2019-09-02 23:36:13.040","stat.key":{"method":"SayHello","local.app":"dubbo-consumer","service":"com.glmapper.bridge.boot.service.HelloService"},"count":1,"total.cost.milliseconds":205,"success":"true","load.test":"F"}- dubbo-server-stat.log
json {"time":"2019-09-02 23:36:13.208","stat.key":{"method":"SayHello","local.app":"dubbo-provider","service":"com.glmapper.bridge.boot.service.HelloService"},"count":1,"total.cost.milliseconds":9,"success":"true","load.test":"F"}
- dubbo-server-stat.log