io.opencensus.trace

Class Link

java.lang.Object

io.opencensus.trace.Link

@Immutable
public abstract class Link
extends Object

A link to a Span from a different trace.

It requires a Link.Type which describes the relationship with the linked Span and the identifiers of the linked Span.

Used (for example) in batching operations, where a single batch handler processes multiple requests from different traces.

Since:

0.5

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Link.Type The relationship with the linked Span relative to the current Span.

Method Summary

Modifier and Type	Method and Description
static Link	fromSpanContext(SpanContext context, Link.Type type) Returns a new Link.
static Link	fromSpanContext(SpanContext context, Link.Type type, Map<String,AttributeValue> attributes) Returns a new Link.
abstract Map<String,AttributeValue>	getAttributes() Returns the set of attributes.
abstract SpanId	getSpanId() Returns the SpanId.
abstract TraceId	getTraceId() Returns the TraceId.
abstract Link.Type	getType() Returns the Type.

Methods inherited from class java.lang.Object

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

Method Detail

fromSpanContext

public static Link fromSpanContext(SpanContext context,
                                   Link.Type type)

Returns a new Link.

Parameters:

context - the context of the linked Span.

type - the type of the relationship with the linked Span.

Returns:

a new Link.

Since:

0.5

fromSpanContext

public static Link fromSpanContext(SpanContext context,
                                   Link.Type type,
                                   Map<String,AttributeValue> attributes)

Returns a new Link.

Parameters:

context - the context of the linked Span.

type - the type of the relationship with the linked Span.

attributes - the attributes of the Link.

Returns:

a new Link.

Since:

0.5

getTraceId

public abstract TraceId getTraceId()

Returns the TraceId.

Returns:

the TraceId.

Since:

0.5

getSpanId

public abstract SpanId getSpanId()

Returns the SpanId.

Returns:

the SpanId

Since:

0.5

getType

public abstract Link.Type getType()

Returns the Type.

Returns:

the Type.

Since:

0.5

getAttributes

public abstract Map<String,AttributeValue> getAttributes()

Returns the set of attributes.

Returns:

the set of attributes.

Since:

0.5