zipkin2.internal

Class DependencyLinker

java.lang.Object

zipkin2.internal.DependencyLinker

public final class DependencyLinker
extends Object

This parses a span tree into dependency links used by Web UI. Ex. http://zipkin/dependency

This implementation traverses the tree, and only creates links between server spans. One exception is at the bottom of the trace tree. client spans that record their Span.remoteEndpoint() are included, as this accounts for uninstrumented services. Spans with Span.kind() unset, but Span.remoteEndpoint() set are treated the same as client spans.

Constructor Summary

Constructors

Constructor and Description
DependencyLinker()

Method Summary

Modifier and Type	Method and Description
List<DependencyLink>	link()
static List<DependencyLink>	merge(Iterable<DependencyLink> in) links are merged by mapping to parent/child and summing corresponding links
DependencyLinker	putTrace(Iterator<Span> spans)

Methods inherited from class java.lang.Object

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

Constructor Detail

DependencyLinker

public DependencyLinker()

Method Detail

putTrace

public DependencyLinker putTrace(Iterator<Span> spans)

Parameters:

spans - spans where all spans have the same trace id

link

public List<DependencyLink> link()

merge

public static List<DependencyLink> merge(Iterable<DependencyLink> in)

links are merged by mapping to parent/child and summing corresponding links