Question

我为数据库测试创建了弹簧启动执行器的示例项目。我点击网址后运行应用程序

当Mongo DB正在运行时
网址：http://localhost:8080/health
回应： `{ “状态”： “UP”， “磁盘空间”：{ “状态”： “UP”， “总”：493767094272， “免费”：404928278528， “阈值”：10485760}， “蒙戈”：{ “状态” ： “UP”， “版本”： “3.0.2”}}

`

当Mongo DB未运行时
URL： http://localhost:8080/health
响应：

{ “状态”： “DOWN”， “磁盘空间”：{ “状态”： “UP”， “总”：493767094272， “免费”：404929720320， “阈值”：10485760}， “蒙戈”：{” status“：”DOWN“，”error“：”org.springframework.dao.DataAccessResourceFailureException：在等待与ReadPreferenceServerSelector {readPreference = primary}匹配的服务器后30000 ms后超时。群集状态的客户端视图为{type = UNKNOWN， servers = [{address = localhost：27017，type = UNKNOWN，state = CONNECTING，exception = {com.mongodb.MongoSocketOpenException：Exception opening socket}，由{java.net.ConnectException：Connection refused：connect}}]引起;嵌套异常是com.mongodb.MongoTimeoutException：在等待与ReadPreferenceServerSelector {readPreference = primary}匹配的服务器后30000毫秒后超时。集群状态的客户端视图是{type = UNKNOWN，servers = [{address = localhost：27017，type = UNKNOWN，state = CONNECTING，exception = {com.mongodb.MongoSocketOpenException：异常打开套接字}，由{java.net.ConnectException：Connection refu引起sed：connect}}]“}}

问题：当我的mongodb未运行时，为什么应用程序状态为“DOWN”。我希望我的申请状态“UP”天气mongodb是“DOWN”或“UP”。

以下是我的春季启动应用程序的主类。

package com.company.testing;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

的pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <artifactId>SpringBootSample</artifactId>
    <version>0.0.1</version>
    <name>Spring Boot Sample</name>
    <description>Spring Boot Sample for spring boot actuator</description>
    <groupId>com.company.testing</groupId>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.4.3.RELEASE</version>
    </parent>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-mongodb</artifactId>
        </dependency>


    </dependencies>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

Answer 1

Spring Boot Actuator使用HealthIndicatorAutoconfiguration配置各种与健康相关的bean。其中一个bean称为healthAggregator，它使用实现或OrderedHealthAggregator。它将使用所有健康指标的最低状态来提供整体应用程序状态（这就是为什么您为整体应用程序获得DOWN的原因。

您可以关闭MongoDb监控（management.health.mongo.enabled=false）或编写自己的AbstractHealthAggregator实现，例如忽略MongoDb并将其提供给您的配置：

    @Bean
    public MyHealthAggregator healthAggregator() {
        return new MyHealthAggregator();
    }

Answer 2

<强> application.properties

management.health.mongo.enabled=false
endpoints.mongo.enabled=true

<强> MongoDBHealthCheckEndPoint.java

@ConfigurationProperties(prefix = "endpoints.mongo", ignoreUnknownFields =     true)
@Component
public class MongoDBHealthCheckEndPoint extends    AbstractEndpoint<Map<String, String>> 
 {

@Inject
MongoTemplate mongoTemplate;


private static final Logger log = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());

private static final Map<String, String> UP = new HashMap<String, String>() {{
    put("mongo.status", "UP");
}};

private static final Map<String, String> DOWN = new HashMap<String, String>() {{
    put("mongo.status", "DOWN");
}};


public MongoDBHealthCheckEndPoint() {
    super("mongo", false);
}

public MongoDBHealthCheckEndPoint(Map<String, ? extends Object> mongo) {
    super("mongo", false);
}

public Map<String, String> invoke() {
    try {
        return (new MongoHealthIndicator(mongoTemplate).health().getStatus().equals(Status.UP)) ? UP : DOWN;
    } catch (Exception e) {
        log.error("mongo database is down", e);
        return DOWN;
    }
}

弹簧启动执行器mongo关闭时应用程序状态下降

2 个答案: