mtric 第一篇

一、使用spring-boot進行管理：

1、需要一個服務端：

服務端配置：

1）需要的依賴包：

<dependencies>
        <dependency>
            <groupId>de.codecentric</groupId>
            <artifactId>spring-boot-admin-starter-server</artifactId>
        </dependency>
        <dependency>
            <groupId>de.codecentric</groupId>
            <artifactId>spring-boot-admin-server-ui</artifactId>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>

    </dependencies>

2）啓動類增加標籤

@SpringBootApplication
@EnableAdminServer
public class SpringbtAdminServerApplication {

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

3）配置文件application.properties：

server.port=19669
spring.application.name=Spring Boot Admin Web

4）啓動服務，訪問地址可見：

2、客戶端（被監控端配置）

1）web端需要添加對應的依賴，並修改對應的配置，使得對應的endpoint暴露出來。

需要依賴的包

<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
            <version>2.1.7.RELEASE</version>
        </dependency>

2）application.properties添加對應的配置，需要配置springadmin 的地址並暴露需要的endpoints

#關於向springadmin監控註冊的配置 start
spring.boot.admin.client.url=http://172.xxx.xxx.96:19669
#關於向springadmin監控註冊的配置 end

#開放所有的web Endpoints
management.endpoints.web.exposure.include= *
management.endpoint.metrics.enabled=true
management.endpoint.health.show-details=always
#exposes management endpoints as JMX MBeans

就可通過訪問地址訪問到已經暴露的endpoints

二、自定義endpoint

通過使用標籤@Endpoint，並且注入該bean，默認自定義的endpoint是暴露的

@Configuration
@Endpoint(id="endpoint-test")
public class PlatformEndpoint {
    @ReadOperation
    public Map<String, Object> endpoint() {
        Map<String, Object> map = new HashMap<>(16);
        map.put("message", "this is my endpoint");
        return map;
    }

}

自定義metric：

1）方法一：加標籤

關於web應用，需要在方法名稱上加上

@Timed(value = "testonexxx",description = "testxxx")
 @RequestMapping(path = "/test1")
    @ResponseBody
    public ResBaseDTO<String> test1(){
        ResBaseDTO<String> res = new ResBaseDTO<>();
        res.setSuccess();
        return res;
    }

2）方法二：實現MeterBinder，spring會自動注入該Metric

public class DemoMetrics implements MeterBinder {
    AtomicInteger count = new AtomicInteger(0);

    @Override
    public void bindTo(MeterRegistry meterRegistry) {
        Gauge.builder("demo.count", count, c -> c.incrementAndGet())
                .tags("host", "localhost")
                .description("demo of custom meter binder")
                .register(meterRegistry);
    }
}

三、查看

訪問：http://localhost:19667/actuator/metrics 可以查看系統註冊了的所有metrics

{
    "names": [
        "jvm.memory.max",
        "tomcat.threads.busy",
        "jvm.threads.states",
        "jvm.gc.memory.promoted",
        "http.client.requests",
        "jvm.memory.used",
        "jvm.gc.max.data.size",
        "jvm.gc.pause",
        "jvm.memory.committed",
        "system.cpu.count",
        "logback.events",
        "okhttp.request",
        "testone",
        "jvm.buffer.memory.used",
        "tomcat.sessions.created",
        "jvm.threads.daemon",
        "system.cpu.usage",
        "jvm.gc.memory.allocated",
        "tomcat.global.sent",
        "dc-platform-metric",
        "tomcat.sessions.expired",
        "tomcat.global.request.max",
        "jvm.threads.live",
        "jvm.threads.peak",
        "tomcat.global.request",
        "process.uptime",
        "tomcat.sessions.rejected",
        "tomcat.global.received",
        "process.cpu.usage",
        "http.server.requests",
        "jvm.classes.loaded",
        "jvm.classes.unloaded",
        "tomcat.sessions.active.current",
        "tomcat.threads.config.max",
        "tomcat.sessions.alive.max",
        "jvm.gc.live.data.size",
        "tomcat.global.error",
        "jvm.buffer.count",
        "tomcat.threads.current",
        "jvm.buffer.total.capacity",
        "tomcat.sessions.active.max",
        "process.start.time"
    ]
}

訪問對應的metric地址，查看具體metric信息：http://localhost:19667/actuator/metrics/dc-platform-metric

{
    "name": "dc-platform-metric",
    "description": "Timer of http request",
    "baseUnit": "seconds",
    "measurements": [
        {
            "statistic": "COUNT",
            "value": 2.0
        },
        {
            "statistic": "TOTAL_TIME",
            "value": 12.7515112
        },
        {
            "statistic": "MAX",
            "value": 12.747449
        }
    ],
    "availableTags": [
        {
            "tag": "method",
            "values": [
                "POST"
            ]
        },
        {
            "tag": "clientName",
            "values": [
                "172.16.117.96"
            ]
        },
        {
            "tag": "uri",
            "values": [
                "/jingwei/dm/analyzeSql"
            ]
        },
        {
            "tag": "status",
            "values": [
                "200"
            ]
        }
    ]
}