org.springframework.cloud.gcp.autoconfigure.logging.extractors

Class XCloudTraceIdExtractor

java.lang.Object

org.springframework.cloud.gcp.autoconfigure.logging.extractors.XCloudTraceIdExtractor

All Implemented Interfaces:

TraceIdExtractor

public class XCloudTraceIdExtractor
extends Object
implements TraceIdExtractor

Extracts trace IDs from HTTP requests using the x-cloud-trace-context header.

Author:

Chengyuan Zhao

Field Summary

Fields

Modifier and Type	Field and Description
static String	X_CLOUD_TRACE_HEADER

Constructor Summary

Constructors

Constructor and Description
XCloudTraceIdExtractor()

Method Summary

Modifier and Type	Method and Description
String	extractTraceIdFromRequest(HttpServletRequest req) Extract trace ID from the HTTP request.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

X_CLOUD_TRACE_HEADER

public static final String X_CLOUD_TRACE_HEADER

See Also:

Constant Field Values

Constructor Detail

XCloudTraceIdExtractor

public XCloudTraceIdExtractor()

Method Detail

extractTraceIdFromRequest

public String extractTraceIdFromRequest(HttpServletRequest req)

Description copied from interface: TraceIdExtractor

Extract trace ID from the HTTP request.

Specified by:

extractTraceIdFromRequest in interface TraceIdExtractor

Parameters:

req - The HTTP servlet request.

Returns:

The trace ID or null, if none found.