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/*-
 * -\-\-
 * github-client
 * --
 * Copyright (C) 2016 - 2021 Spotify AB
 * --
 * 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 com.spotify.github.tracing;

import static java.util.Objects.requireNonNull;

import com.spotify.github.http.HttpRequest;
import java.util.concurrent.CompletionStage;

public abstract class BaseTracer implements Tracer {
  @Override
  public Span span(final String name, final String method, final CompletionStage future) {
    return internalSpan(name, method, future);
  }

  @Override
  public Span span(final String path, final String method) {
    return internalSpan(path, method, null);
  }

  @Override
  public Span span(final HttpRequest request) {
    requireNonNull(request);
    return internalSpan(request, null);
  }

  @Override
  public Span span(final HttpRequest request, final CompletionStage future) {
    return internalSpan(request, future);
  }

  protected abstract Span internalSpan(String path, String method, CompletionStage future);

  protected abstract Span internalSpan(HttpRequest request, CompletionStage future);

  @Override
  public void attachSpanToFuture(final Span span, final CompletionStage future) {
    future
        .whenComplete(
            (result, t) -> {
              if (t == null) {
                span.success();
              } else {
                span.failure(t);
              }
              span.close();
            })
        .exceptionally(
            t -> {
              span.failure(t);
              span.close();
              return null;
            });
  }
}