Added MDC to logs to be able track specific error logs in Stackdriver Dashboard and Logging Console. Current implementation is working fine on local machine but on cloud it is not - just don't include my MDC to log entry. The problem is that I cannot figure out what might be a problem at all.
Local logs output(contains "contextKey": "someValue"):
{"traceId":"615b35dc7f639027","spanId":"615b35dc7f639027","spanExportable":"false","contextKey":"someValue","timestampSeconds":1552311117,"timestampNanos":665000000,"severity":"ERROR","thread":"reactor-http-nio-3","logger":"com.example.someservice.controller.MyController", ...}
Kubernetes container log of the same service(no "contextKey": "someValue" in this log entry):
{"traceId":"8d7287fa0ebdacfce9b88097e290ecbf","spanId":"96967afbe05dbf0e","spanExportable":"false","X-B3-ParentSpanId":"224dcb9869488858","parentId":"224dcb9869488858","timestampSeconds":1552312549,"timestampNanos":752000000,"severity":"ERROR","thread":"reactor-http-epoll-2","logger":"com.example.someservice.controller.MyController","message":"Something went wrong","context":"default","logging.googleapis.com/trace":"projects/my-project/traces/8d7287fa0ebdacfce9b88097e290ecbf","logging.googleapis.com/spanId":"96967afbe05dbf0e"}
My logback.xml:
<configuration>
<appender name="CONSOLE_JSON" class="ch.qos.logback.core.ConsoleAppender">
<encoder class="ch.qos.logback.core.encoder.LayoutWrappingEncoder">
<layout class="org.springframework.cloud.gcp.autoconfigure.logging.StackdriverJsonLayout">
<projectId>${projectId}</projectId>
</layout>
</encoder>
</appender>
<springProfile name="local,dev,test">
<root level="INFO">
<appender-ref ref="CONSOLE_JSON"/>
</root>
</springProfile>
</configuration>
Controller which trigger log creation with defined MDC:
@RestController
@RequestMapping("v1/my-way")
@Slf4j
public class MyController {
@GetMapping
public void read() {
MDC.put("contextKey", "someValue");
log.error("Something went wrong");
MDC.remove("contextKey")
}
}