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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.metrics.spi;

import io.opentelemetry.metrics.MeterProvider;
import javax.annotation.concurrent.ThreadSafe;

/**
 * MeterProviderFactory is a service provider for {@link MeterProvider}. Fully qualified class name
 * of the implementation should be registered in {@code
 * META-INF/services/io.opentelemetry.metrics.spi.MeterProviderFactory}. 

 * 

 * A specific implementation can be selected by a system property {@code
 * io.opentelemetry.metrics.spi.MeterProviderFactory} with value of fully qualified class name.
 *
 * @see io.opentelemetry.OpenTelemetry
 */
@ThreadSafe
public interface MeterProviderFactory {

  /**
   * Creates a new meter registry instance.
   *
   * @return a meter factory instance.
   * @since 0.1.0
   */
  MeterProvider create();
}