```
public class OpenCensusUtil
extends Object
```
Utilities for propagating OpenCensus TagContext and SpanContext from publishers to subscribers.

Nested Classes
Modifier and Type	Class	Description
`static class`	`OpenCensusUtil.OpenCensusMessageReceiver`	Wrapper class for `MessageReceiver` that decodes any received trace and tag contexts and puts them in scope.

Fields
Modifier and Type	Field	Description
`static com.google.api.core.ApiFunction<PubsubMessage,PubsubMessage>`	`OPEN_CENSUS_MESSAGE_TRANSFORM`	Propagates active OpenCensus trace and tag contexts from the Publisher by adding them as attributes to the `PubsubMessage`.
`static String`	`TAG_CONTEXT_KEY`
`static String`	`TRACE_CONTEXT_KEY`

Method Summary
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Class OpenCensusUtil