org.apache.rocketmq.shaded.io.opentelemetry.sdk.metrics.internal.view.ViewRegistryBuilder Maven / Gradle / Ivy

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/*
 * Copyright The OpenTelemetry Authors
 * SPDX-License-Identifier: Apache-2.0
 */

package org.apache.rocketmq.shaded.io.opentelemetry.sdk.metrics.internal.view;

import org.apache.rocketmq.shaded.io.opentelemetry.sdk.metrics.InstrumentSelector;
import org.apache.rocketmq.shaded.io.opentelemetry.sdk.metrics.View;
import org.apache.rocketmq.shaded.io.opentelemetry.sdk.metrics.internal.debug.SourceInfo;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
 * Builder for {@link ViewRegistry}.
 *
 * This class is internal and is hence not for public use. Its APIs are unstable and can change
 * at any time.
 */
public class ViewRegistryBuilder {
  private final List orderedViews = new ArrayList<>();

  ViewRegistryBuilder() {}

  /** Returns the {@link ViewRegistry}. */
  public ViewRegistry build() {
    return new ViewRegistry(Collections.unmodifiableList(orderedViews));
  }

  /**
   * Adds a new view to the registry.
   *
   * @param selector The instruments that should have their defaults altered.
   * @param view The {@link View} metric definition.
   * @param viewSourceInfo The {@link SourceInfo} from where the source was registered.
   * @return this
   */
  public ViewRegistryBuilder addView(
      InstrumentSelector selector,
      View view,
      AttributesProcessor viewAttributeProcessor,
      SourceInfo viewSourceInfo) {
    orderedViews.add(RegisteredView.create(selector, view, viewAttributeProcessor, viewSourceInfo));
    return this;
  }
}