NoopSpan.java

package brave;

import brave.propagation.TraceContext;
import com.google.auto.value.AutoValue;
import zipkin.Endpoint;

@AutoValue
abstract class NoopSpan extends Span {

  static NoopSpan create(TraceContext context) {
    return new AutoValue_NoopSpan(context);
  }

  @Override public boolean isNoop() {
    return true;
  }

  @Override public Span start() {
    return this;
  }

  @Override public Span start(long timestamp) {
    return this;
  }

  @Override public Span name(String name) {
    return this;
  }

  @Override public Span kind(Kind kind) {
    return this;
  }

  @Override public Span annotate(String value) {
    return this;
  }

  @Override public Span annotate(long timestamp, String value) {
    return this;
  }

  @Override public Span remoteEndpoint(Endpoint endpoint) {
    return this;
  }

  @Override public Span tag(String key, String value) {
    return this;
  }

  @Override public void finish() {
  }

  @Override public void finish(long timestamp) {
  }

  @Override public void flush() {
  }
}