Package io.opencensus.trace

API for distributed tracing.

See: Description

Class Summary

Class	Description
Annotation	A text annotation with a set of attributes.
AttributeValue	A class that represents all the possible values for an attribute.
BaseMessageEvent	Deprecated This class is for internal use only.
BlankSpan	The BlankSpan is a singleton class, which is the default Span that is used when no Span implementation is available.
EndSpanOptions	A class that enables overriding the default values used when ending a Span.
EndSpanOptions.Builder	Builder class for EndSpanOptions.
Link	A link to a Span from a different trace.
MessageEvent	A class that represents a generic messaging event.
MessageEvent.Builder	Builder class for MessageEvent.
NetworkEvent	Deprecated Use MessageEvent.
NetworkEvent.Builder	Deprecated NetworkEvent is deprecated.
Sampler	Sampler is used to make decisions on Span sampling.
Span	An abstract class that represents a span.
SpanBuilder	SpanBuilder is used to construct Span instances which define arbitrary scopes of code that are sampled for distributed tracing as a single atomic unit.
SpanContext	A class that represents a span context.
SpanId	A class that represents a span identifier.
Status	Defines the status of a Span by providing a standard Status.CanonicalCode in conjunction with an optional descriptive message.
TraceComponent	Class that holds the implementation instances for Tracer, PropagationComponent, Clock, ExportComponent and TraceConfig.
TraceId	A class that represents a trace identifier.
TraceOptions	A class that represents global trace options.
TraceOptions.Builder	Builder class for TraceOptions.
Tracer	Tracer is a simple, thin class for Span creation and in-process context interaction.
Tracestate	Carries tracing-system specific context in a list of key-value pairs.
Tracestate.Builder	Builder class for MessageEvent.
Tracestate.Entry	Immutable key-value pair for Tracestate.
Tracing	Class that manages a global instance of the TraceComponent.

Enum Summary

Enum	Description
Link.Type	The relationship with the linked Span relative to the current Span.
MessageEvent.Type	Available types for a MessageEvent.
NetworkEvent.Type	Available types for a NetworkEvent.
Span.Kind	Type of span.
Span.Options	Span options.
Status.CanonicalCode	The set of canonical status codes.

Package io.opencensus.trace Description

API for distributed tracing.

Distributed tracing, also called distributed request tracing, is a technique that helps debugging distributed applications.

Trace represents a tree of spans. A trace has a root span that encapsulates all the spans from start to end, and the children spans being the distinct calls invoked in between.

Span represents a single operation within a trace.

Spans are propagated in-process in the io.grpc.Context and between process using one of the wire propagation formats supported in the io.opencensus.trace.propagation package.