Class TraceContextInterceptor (6.119.0)

public class TraceContextInterceptor implements ClientInterceptor

Intercepts all gRPC calls and injects trace context related headers to propagate trace context to Spanner. This class takes reference from OpenTelemetry's JAVA instrumentation library for gRPC. https://github.com/open-telemetry/opentelemetry-java-instrumentation/blob/9ecf7965aa455d41ea8cc0761b6c6b6eeb106324/instrumentation/grpc-1.6/library/src/main/java/io/opentelemetry/instrumentation/grpc/v1_6/TracingClientInterceptor.java#L27

Inheritance

java.lang.Object > TraceContextInterceptor

Implements

io.grpc.ClientInterceptor

Inherited Members

Object.equals(Object)

Object.finalize()

Object.getClass()

Object.hashCode()

Object.notify()

Object.notifyAll()

Object.toString()

Object.wait(long)

Object.wait(long,int)

Constructors

TraceContextInterceptor(OpenTelemetry openTelemetry)

public TraceContextInterceptor(OpenTelemetry openTelemetry)

Parameter
Name	Description
`openTelemetry`	`io.opentelemetry.api.OpenTelemetry`

Methods

<ReqT,RespT>interceptCall(MethodDescriptor<ReqT,RespT> method, CallOptions callOptions, Channel next)

public ClientCall<ReqT,RespT> <ReqT,RespT>interceptCall(MethodDescriptor<ReqT,RespT> method, CallOptions callOptions, Channel next)

Parameters
Name	Description
`method`	`io.grpc.MethodDescriptor<ReqT,RespT>`
`callOptions`	`io.grpc.CallOptions`
`next`	`io.grpc.Channel`

Returns
Type	Description
`io.grpc.ClientCall<ReqT,RespT>`

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Last updated 2026-07-31 UTC.