skywalking代码常用配置

• 自定义链路追踪：@Trace

• 上报方法的请求和返回的参数:

1. @Tag(key = "listAll.a", value = "arg[0]")
2. @Tag(key = "listAll.b", value = "arg[1]")
3. @Tag(key = "listAll.return", value = "returnedObj")

• 日志配置

  详见logback.xml

         日志增加traceId，以及上报skywalking

<configuration scan="true" scanPeriod=" 5 seconds">

    <appender name="stdout" class="ch.qos.logback.core.ConsoleAppender">
        <encoder class="ch.qos.logback.core.encoder.LayoutWrappingEncoder">
            <layout class="org.apache.skywalking.apm.toolkit.log.logback.v1.x.mdc.TraceIdMDCPatternLogbackLayout">
                <Pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%X{tid}] [%thread] %-5level %logger{36} -%msg%n</Pattern>
            </layout>
        </encoder>
    </appender>

    <appender name="grpc-log" class="org.apache.skywalking.apm.toolkit.log.logback.v1.x.log.GRPCLogClientAppender">
        <encoder class="ch.qos.logback.core.encoder.LayoutWrappingEncoder">
            <layout class="org.apache.skywalking.apm.toolkit.log.logback.v1.x.mdc.TraceIdMDCPatternLogbackLayout">
                <Pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%X{tid}] [%thread] %-5level %logger{36} -%msg%n</Pattern>
            </layout>
        </encoder>
    </appender>

    <appender name="fileAppender" class="ch.qos.logback.core.FileAppender">
        <file>/tmp/skywalking-logs/logback/e2e-service-provider.log</file>
        <encoder class="ch.qos.logback.core.encoder.LayoutWrappingEncoder">
            <layout class="org.apache.skywalking.apm.toolkit.log.logback.v1.x.TraceIdPatternLogbackLayout">
                <Pattern>[%sw_ctx] [%level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %logger:%line - %msg%n</Pattern>
            </layout>
        </encoder>
    </appender>

    <root level="INFO">
        <appender-ref ref="grpc-log"/>
        <appender-ref ref="stdout"/>
    </root>
    <logger name="fileLogger" level="INFO">
        <appender-ref ref="fileAppender"/>
    </logger>
</configuration>

• 如果是LogstashEncoder可以在<encoder>下面加<provider>来追加traceId在日志信息里面，如下

 <encoder class="net.logstash.logback.encoder.LogstashEncoder">
                <provider class="org.apache.skywalking.apm.toolkit.log.logback.v1.x.logstash.TraceIdJsonProvider"/>
 </encoder>

 详见 skywalking-LogstashEncoder