com.github.kristofa.brave

Class IdConversion

java.lang.Object

com.github.kristofa.brave.IdConversion

public class IdConversion
extends Object

Contains conversion utilities for converting trace and span ids from long to string and vice versa.

The string representation is used when transferring trace context from client to server as http headers.

This implementation is expected to be compatible with Zipkin. This is important in case you mix brave services with zipkin / finagle services.

The only difference between the zipkin implementation and this implementation is that zipkin prepends '0' characters in case String does not contain 16 characters. For example instead of generating String "0" for long id 0 it generates "0000000000000000". But zipkin will properly convert String representations in case they are not prepended with 0's.

Author:

kristof

Constructor Summary

Constructors

Constructor and Description
IdConversion()

Method Summary

Modifier and Type	Method and Description
static long	convertToLong(String id) Converts String trace or span id to long.
static String	convertToString(long id) Converts long trace or span id to String.

Methods inherited from class java.lang.Object

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

Constructor Detail

IdConversion

public IdConversion()

Method Detail

convertToString

public static String convertToString(long id)

Converts long trace or span id to String.

Parameters:

id - trace, span or parent span id.

Returns:

String representation.

convertToLong

public static long convertToLong(String id)

Converts String trace or span id to long.

Parameters:

id - trace, span or parent span id.

Returns:

Long representation.