org.apache.rocketmq.shaded.io.opentelemetry.sdk.metrics.internal.state.MeterProviderSharedState 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.state;

import org.apache.rocketmq.shaded.com.google.auto.value.AutoValue;
import org.apache.rocketmq.shaded.io.opentelemetry.sdk.common.Clock;
import org.apache.rocketmq.shaded.io.opentelemetry.sdk.metrics.internal.exemplar.ExemplarFilter;
import org.apache.rocketmq.shaded.io.opentelemetry.sdk.metrics.internal.view.ViewRegistry;
import org.apache.rocketmq.shaded.io.opentelemetry.sdk.resources.Resource;
import javax.annotation.concurrent.Immutable;

/**
 * State for a {@code MeterProvider}.
 *
 * This class is internal and is hence not for public use. Its APIs are unstable and can change
 * at any time.
 */
@AutoValue
@Immutable
public abstract class MeterProviderSharedState {
  public static MeterProviderSharedState create(
      Clock clock, Resource resource, ViewRegistry viewRegistry, ExemplarFilter exemplarFilter) {
    return new AutoValue_MeterProviderSharedState(
        clock, resource, viewRegistry, clock.now(), exemplarFilter);
  }

  MeterProviderSharedState() {}

  /** Returns the clock used for measurements. */
  public abstract Clock getClock();

  /** Returns the {@link Resource} to attach telemetry to. */
  abstract Resource getResource();

  /** Returns the {@link ViewRegistry} for custom aggregation and metric definitions. */
  abstract ViewRegistry getViewRegistry();

  /**
   * Returns the timestamp when this {@code MeterProvider} was started, in nanoseconds since Unix
   * epoch time.
   */
  abstract long getStartEpochNanos();

  /** Returns the {@link ExemplarFilter} for remembering synchronous measurements. */
  abstract ExemplarFilter getExemplarFilter();
}