Question

我使用Spring Boot 2.2.5 +千分尺1.3.5 + starter-data-mongodb

在“ io.micrometer.core.instrument.binder.mongodb”下，我可以看到2个类CommandListener和ConnectionPoolListener。我想知道这些服务的目的是什么？

在执行器指标端点中，mongo指标不可用。

如何在执行器中启用mongodb的指标？例如，执行器自动显示RabbitMQ的多个指标。我在MongoDB的情况下也期待类似的事情。我应该创建自己的指标吗？

Answer 1

添加这些侦听器并不像我想的那样简单，这完全取决于您用于配置Spring Data MongoDB的属性。

集成的关键是自定义用于创建MongoClient的com.mongodb.MongoClientSettings实例。 Connecting to MongoDB with Spring

中记录了这样做的多种可能性

以下是一个基于Spring Boot 2.3的工作示例（从我们的应用程序简化），假定您正在使用 spring.data.mongodb.uri 在应用程序中指定连接字符串。属性。

package com.example.demo;

import com.mongodb.ConnectionString;
import com.mongodb.MongoClientSettings;
import io.micrometer.core.instrument.MeterRegistry;
import io.micrometer.core.instrument.binder.mongodb.MongoMetricsCommandListener;
import io.micrometer.core.instrument.binder.mongodb.MongoMetricsConnectionPoolListener;
import org.springframework.boot.autoconfigure.mongo.MongoProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.mongodb.core.MongoClientFactoryBean;

@Configuration
public class MongoConfiguration {

    @Bean
    public MongoClientFactoryBean mongoClientFactoryBean(MongoProperties properties, MeterRegistry meterRegistry) {
        MongoClientFactoryBean mongoClientFactoryBean = new MongoClientFactoryBean();

        mongoClientFactoryBean.setConnectionString(new ConnectionString(properties.getUri()));

        MongoClientSettings settings = MongoClientSettings.builder()
                .addCommandListener(new MongoMetricsCommandListener(meterRegistry))
                .applyToConnectionPoolSettings(builder ->
                        builder.addConnectionPoolListener(new MongoMetricsConnectionPoolListener(meterRegistry)))
                .build();
        mongoClientFactoryBean.setMongoClientSettings(settings);

        return mongoClientFactoryBean;
    }

}

不幸的是，configuring MongoDB from Spring Boot 2.2 to 2.3中有很多地方。如果您无法使用Spring Boot 2.3，并且无法将其反向移植到2.2，请告诉我。

Answer 2

为了使Spring Boot应用其自动配置，我建议使用定制器模式：

@Configuration
public class MongoConfiguration {

   @Bean
   public MongoClientSettingsBuilderCustomizer mongoClientSettingsBuilderCustomizer(MeterRegistry meterRegistry) {
        return builder -> builder.addCommandListener(new MongoMetricsCommandListener(meterRegistry));
   }

}

请注意，您目前不会在指标中看到与spring数据存储库或mongo集合的关系。 see open issue

Answer 3

简答

用 MongoClientOptions 创建一个 addCommandListener bean，一切顺利。

@Configuration
public class MongoConfiguration {
    @Autowired
    private MeterRegistry meterRegistry;

    @Bean
    public MongoClientOptions myMongoClientOptions() {
        return MongoClientOptions.builder()
.addCommandListener(new MongoMetricsCommandListener(meterRegistry)).build();
    }

}

@chargue 的回答不适用于特定版本的 spring-data-mongodb。因为 org.springframework.boot.autoconfigure.mongo.MongoAutoConfiguration 用 MongoClient 初始化 MongoClientOptions，而不是 MongoClientSettings。它可能适用于较新版本的 spring-data-mongodb 因为根据 mongodb 的文档，MongoClientSettings 是推荐的方式。

    @Bean
    @ConditionalOnMissingBean(type = { "com.mongodb.MongoClient", "com.mongodb.client.MongoClient" })
    public MongoClient mongo(MongoProperties properties, ObjectProvider<MongoClientOptions> options,
            Environment environment) {
        return new MongoClientFactory(properties, environment).createMongoClient(options.getIfAvailable());
    }

确保 prometheus 和千分尺设置正确。您应该在 prometheus 端点中看到 mongo 指标，如下所示：

# HELP process_cpu_usage The "recent cpu usage" for the Java Virtual Machine process
# TYPE process_cpu_usage gauge
process_cpu_usage{application="",} 0.004362672325272289
# HELP mongodb_driver_commands_seconds_max Timer of mongodb commands
# TYPE mongodb_driver_commands_seconds_max gauge
mongodb_driver_commands_seconds_max{application="",cluster_id="60b0d12d73b6df671cb4d882",command="find",server_address="",status="SUCCESS",} 34.684200332
mongodb_driver_commands_seconds_max{application="",cluster_id="60b0d12d73b6df671cb4d882",command="buildInfo",server_address="",status="SUCCESS",} 0.263514375
# HELP mongodb_driver_commands_seconds Timer of mongodb commands
# TYPE mongodb_driver_commands_seconds summary
mongodb_driver_commands_seconds_count{application="",cluster_id="60b0d12d73b6df671cb4d882",command="find",server_address="",status="SUCCESS",} 1.0
mongodb_driver_commands_seconds_sum{application="",cluster_id="60b0d12d73b6df671cb4d882",command="find",server_address="",status="SUCCESS",} 34.684200332
mongodb_driver_commands_seconds_count{application="",cluster_id="60b0d12d73b6df671cb4d882",command="buildInfo",server_address="",status="SUCCESS",} 1.0
mongodb_driver_commands_seconds_sum{application="",cluster_id="60b0d12d73b6df671cb4d882",command="buildInfo",server_address="",status="SUCCESS",} 0.263514375

MongoDB的Spring Boot千分尺指标

3 个答案: