org.hawkular.apm.server.api.utils.zipkin

Class SpanUniqueIdGenerator

java.lang.Object

org.hawkular.apm.server.api.utils.zipkin.SpanUniqueIdGenerator

public class SpanUniqueIdGenerator
extends Object

Spans generally have an unique id, except when there are two spans representing the client and server side of a communication, in which case they share the same span id. Therefore, it is necessary to provide an utility class for changing the id to avoid overriding entities in a database, cache... To the id of the client spans is added a string suffix.

Author:

Pavol Loffay

Field Summary

Fields

Modifier and Type	Field and Description
protected static String	CLIENT_ID_SUFFIX

Constructor Summary

Constructors

Constructor and Description
SpanUniqueIdGenerator()

Method Summary

Modifier and Type	Method and Description
static String	getClientId(String id)
static String	toOriginal(Span span) Reverse method to the toUnique(Span) to generate original id from the unique id.
static String	toUnique(Span span) Utility method to get unique id of the span.

Methods inherited from class java.lang.Object

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

Field Detail

CLIENT_ID_SUFFIX

protected static final String CLIENT_ID_SUFFIX

See Also:

Constant Field Values

Constructor Detail

SpanUniqueIdGenerator

public SpanUniqueIdGenerator()

Method Detail

toUnique

public static String toUnique(Span span)

Utility method to get unique id of the span. Note that method does not change the span id.

Parameters:

span - Span.

Returns:

Unique id of the span.

toOriginal

public static String toOriginal(Span span)

Reverse method to the toUnique(Span) to generate original id from the unique id.

Parameters:

span - Span with unique id.

Returns:

Original id of the span.

getClientId

public static String getClientId(String id)