在SOFARPC(5.4.0及之后的版本) 后的版本中，我们集成了SOFATracer的功能，默认开启，可以输出链路中的数据信息。

默认为 JSON 数据格式，具体的字段含义解释如下：

RPC 客户端 摘要日志（ rpc-client-digest.log）

• 日志打印时间
• TraceId
• SpanId
• Span 类型
• 当前 appName
• 协议类型
• 服务接口信息
• 方法名
• 当前线程名
• 调用类型
• 路由记录
• 目标ip
• 本机ip
• 返回码
• 请求序列化时间
• 响应反序列化时间
• 响应大小(单位Byte)
• 请求大小(单位Byte)
• 客户端连接耗时
• 调用总耗时
• 本地客户端端口
• 透传的 baggage 数据 (kv 格式)

样例：

{"timestamp":"2018-05-20 17:03:20.708","tracerId":"1e27326d1526807000498100185597","spanId":"0","span.kind":"client","local.app":"SOFATracerRPC","protocol":"bolt","service":"com.alipay.sofa.tracer.examples.sofarpc.direct.DirectService:1.0","method":"sayDirect","current.thread.name":"main","invoke.type":"sync","router.record":"DIRECT","remote.ip":"127.0.0.1:12200","local.client.ip":"127.0.0.1","result.code":"00","req.serialize.time":"33","resp.deserialize.time":"39","resp.size":"170","req.size":"582","client.conn.time":"0","client.elapse.time":"155","local.client.port":"59774","baggage":""}

RPC 服务端 摘要日志（ rpc-server-digest.log）

• 日志打印时间
• TraceId
• SpanId
• Span 类型
• 服务接口信息
• 方法名
• 来源ip
• 来源 appName
• 协议
• 本应用 appName
• 当前线程名
• 返回码
• 服务端线程池等待时间
• 业务处理耗时
• 响应序列化时间
• 请求反序列化时间
• 响应大小(单位Byte)
• 请求大小(单位Byte)
• 透传的 baggage 数据 (kv 格式)

样例：

{"timestamp":"2018-05-20 17:00:53.312","tracerId":"1e27326d1526806853032100185011","spanId":"0","span.kind":"server","service":"com.alipay.sofa.tracer.examples.sofarpc.direct.DirectService:1.0","method":"sayDirect","remote.ip":"127.0.0.1","remote.app":"SOFATracerRPC","protocol":"bolt","local.app":"SOFATracerRPC","current.thread.name":"SOFA-BOLT-BIZ-12200-5-T1","result.code":"00","server.pool.wait.time":"3","biz.impl.time":"0","resp.serialize.time":"4","req.deserialize.time":"38","resp.size":"170","req.size":"582","baggage":"",{"timestamp":"2018-05-20 17:03:05.646","tracerId":"1e27326d1526806985394100185589","spanId":"0","span.kind":"server","service":"com.alipay.sofa.tracer.examples.sofarpc.direct.DirectService:1.0","method":"sayDirect","remote.ip":"127.0.0.1","remote.app":"SOFATracerRPC","protocol":"bolt","local.app":"SOFATracerRPC","current.thread.name":"SOFA-BOLT-BIZ-12200-5-T1","result.code":"00","server.pool.wait.time":"2","biz.impl.time":"1","resp.serialize.time":"1","req.deserialize.time":"6","resp.size":"170","req.size":"582","baggage":"",{"timestamp":"2018-05-20 17:03:20.701","tracerId":"1e27326d1526807000498100185597","spanId":"0","span.kind":"server","service":"com.alipay.sofa.tracer.examples.sofarpc.direct.DirectService:1.0","method":"sayDirect","remote.ip":"127.0.0.1","remote.app":"SOFATracerRPC","protocol":"bolt","local.app":"SOFATracerRPC","current.thread.name":"SOFA-BOLT-BIZ-12200-5-T1","result.code":"00","server.pool.wait.time":"2","biz.impl.time":"0","resp.serialize.time":"1","req.deserialize.time":"4","resp.size":"170","req.size":"582","baggage":"",{"timestamp":"2018-05-20 17:04:19.966","tracerId":"1e27326d1526807046606100185635","spanId":"0","span.kind":"server","service":"com.alipay.sofa.tracer.examples.sofarpc.direct.DirectService:1.0","method":"sayDirect","remote.ip":"127.0.0.1","remote.app":"SOFATracerRPC","protocol":"bolt","local.app":"SOFATracerRPC","current.thread.name":"SOFA-BOLT-BIZ-12200-5-T1","result.code":"00","server.pool.wait.time":"2","biz.impl.time":"0","resp.serialize.time":"1","req.deserialize.time":"4","resp.size":"170","req.size":"582","baggage":""}

RPC 客户端 统计日志（ rpc-client-stat.log）

• 日志打印时间
• 日志关键key
• 方法信息
• 客户端 appName
• 服务接口信息
• 调用次数
• 总耗时
• 调用结果

样例：

{"time":"2018-05-18 07:02:19.717","stat.key":{"method":"method","local.app":"client","service":"app.service:1.0"},"count":10,"total.cost.milliseconds":17,"success":"Y"}

RPC 服务端 统计日志（ rpc-server-stat.log）

• 日志打印时间
• 日志关键key
• 方法信息
• 客户端 appName
• 服务接口信息
• 调用次数
• 总耗时
• 调用结果

样例：

{"time":"2018-05-18 07:02:19.717","stat.key":{"method":"method","local.app":"client","service":"app.service:1.0"},"count":10,"total.cost.milliseconds":17,"success":"Y"}