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/*
 * Copyright 2019, OpenTelemetry Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.opentelemetry.sdk.trace;

final class NoopSpanProcessor implements SpanProcessor {
  private static final NoopSpanProcessor INSTANCE = new NoopSpanProcessor();

  static SpanProcessor getInstance() {
    return INSTANCE;
  }

  @Override
  public void onStart(ReadableSpan span) {}

  @Override
  public boolean isStartRequired() {
    return false;
  }

  @Override
  public void onEnd(ReadableSpan span) {}

  @Override
  public boolean isEndRequired() {
    return false;
  }

  @Override
  public void shutdown() {}

  @Override
  public void forceFlush() {}

  private NoopSpanProcessor() {}
}