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/*
 * Copyright 2012-2020 the original author or 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
 *
 *      https://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 org.springframework.boot.actuate.autoconfigure.metrics.export.newrelic;

import io.micrometer.core.instrument.Clock;
import io.micrometer.newrelic.NewRelicClientProvider;
import io.micrometer.newrelic.NewRelicConfig;
import io.micrometer.newrelic.NewRelicMeterRegistry;
import io.micrometer.newrelic.NewRelicMeterRegistry.Builder;

import org.springframework.beans.factory.ObjectProvider;
import org.springframework.boot.actuate.autoconfigure.metrics.CompositeMeterRegistryAutoConfiguration;
import org.springframework.boot.actuate.autoconfigure.metrics.MetricsAutoConfiguration;
import org.springframework.boot.actuate.autoconfigure.metrics.export.simple.SimpleMetricsExportAutoConfiguration;
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
import org.springframework.boot.autoconfigure.AutoConfigureBefore;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * {@link EnableAutoConfiguration Auto-configuration} for exporting metrics to New Relic.
 *
 * @author Jon Schneider
 * @author Andy Wilkinson
 * @author Artsiom Yudovin
 * @since 2.0.0
 */
@Configuration(proxyBeanMethods = false)
@AutoConfigureBefore({ CompositeMeterRegistryAutoConfiguration.class, SimpleMetricsExportAutoConfiguration.class })
@AutoConfigureAfter(MetricsAutoConfiguration.class)
@ConditionalOnBean(Clock.class)
@ConditionalOnClass(NewRelicMeterRegistry.class)
@ConditionalOnProperty(prefix = "management.metrics.export.newrelic", name = "enabled", havingValue = "true",
		matchIfMissing = true)
@EnableConfigurationProperties(NewRelicProperties.class)
public class NewRelicMetricsExportAutoConfiguration {

	private final NewRelicProperties properties;

	public NewRelicMetricsExportAutoConfiguration(NewRelicProperties properties) {
		this.properties = properties;
	}

	@Bean
	@ConditionalOnMissingBean
	public NewRelicConfig newRelicConfig() {
		return new NewRelicPropertiesConfigAdapter(this.properties);
	}

	@Bean
	@ConditionalOnMissingBean
	public NewRelicMeterRegistry newRelicMeterRegistry(NewRelicConfig newRelicConfig, Clock clock,
			ObjectProvider newRelicClientProvider) {
		Builder builder = NewRelicMeterRegistry.builder(newRelicConfig).clock(clock);
		newRelicClientProvider.ifUnique(builder::clientProvider);
		return builder.build();
	}

}