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package com.demo.app;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import com.codahale.metrics.MetricRegistry;

import io.micrometer.core.instrument.Clock;
import io.micrometer.core.instrument.MeterRegistry;
import io.micrometer.core.instrument.config.NamingConvention;
import io.micrometer.core.instrument.dropwizard.DropwizardConfig;
import io.micrometer.core.instrument.dropwizard.DropwizardMeterRegistry;
import io.micrometer.core.instrument.util.HierarchicalNameMapper;

@Configuration
public class MetricsConfig {

    @Bean
    public MetricRegistry dropwizardRegistry() {
        return new MetricRegistry();
    }

    @Bean
    public MeterRegistry consoleLoggingRegistry(MetricRegistry dropwizardRegistry) {
        DropwizardConfig consoleConfig = new DropwizardConfig() {

            @Override
            public String prefix() {
                return "console";
            }

            @Override
            public String get(String key) {
                return null;
            }

        };

        DropwizardMeterRegistry reg = new DropwizardMeterRegistry(consoleConfig, dropwizardRegistry, HierarchicalNameMapper.DEFAULT,
                Clock.SYSTEM) {
            @Override
            protected Double nullGaugeValue() {
                return null;
            }
        };

        reg.config().namingConvention(NamingConvention.dot);

        return reg;
    }
}