Spring cloud -- springbootadmin monitor

osc_eoqljui5 2020-11-10 08:52:15
spring cloud springbootadmin monitor


brief introduction

Spring Boot Admin It's an open source community project , For management and monitoring SpringBoot Applications . Application as Spring Boot Admin Client for Spring Boot Admin Server register ( adopt HTTP) Or use SpringCloud Registry Center ( for example Eureka,Consul) Find out . UI Yes AngularJs Applications , Exhibition Spring Boot Admin Client Of Actuator Some monitoring on the endpoint . Common features or monitoring are as follows :

  • Display health status
  • Show details , for example
    JVM And memory metrics
    micrometer.io indicators
    Data source indicator
    Cache indicators



  • Displays the build information number
  • Watch and download the log files
  • see jvm System and environment properties
  • see Spring Boot Configuration properties
  • Support Spring Cloud Of postable / env- and / refresh-endpoint
  • Easy log-level management
  • And JMX-beans Interaction
  • View the thread dump
  • see http track
  • see auditevents
  • see http-endpoints
  • View scheduled tasks
  • View and delete the active session ( Use spring-session)
  • see Flyway / Liquibase Database migration
  • download heapdump
  • Status change notification ( By E-mail ,Slack,Hipchat,…)
  • Event log for status changes ( non-persistent )

quote Pom


<!-- Send E-mail -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mail</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- Exposure to indicators -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<!-- SpringBootAdmin -->
<dependency>
<groupId>de.codecentric</groupId>
<artifactId>spring-boot-admin-starter-server</artifactId>
<version>2.2.3</version>
</dependency>
<!-- Service registration -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-consul-discovery</artifactId>
<version>2.2.3.RELEASE</version>
</dependency>
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Yml file

spring:
application:
name: spring-boot-admin
main:
allow-bean-definition-overriding: true
boot:
admin:
discovery:
ignored-services: consul
# Monitoring notification email 
notify:
mail:
from:  Email account 
to:  Receiving email account number 
# Configure mailbox 
mail:
host: smtp.163.com
username:  Email account 
password:  Authorization code 
properties:
mail:
smtp:
auth: true
starttls:
enable: true
required: true
#QQ The mailbox must be filled with 
ssl:
enable: true
cloud:
consul:
# To configure consul Server's host
host: localhost
# configure port 
port: 8500
discovery:
# Configure health check intervals 
health-check-interval: 15s
# Configure the instance id
instance-id: ${
spring.application.name}:${
vcap.application.instance_id:${
spring.application.instance_id:${
random.value}}}
# Configure service registration 
register: true
# Indicates to use... When registering ip instead of hostname
prefer-ip-address: true
# How long does a health check fail to cancel registration 
health-check-critical-timeout: 30s

Global configuration

Create a new global configuration class :MonkeyConfiguration

package com.admin.admin;
import de.codecentric.boot.admin.server.domain.entities.InstanceRepository;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.mail.javamail.JavaMailSender;
/**
* @Author: LailaiMonkey
* @Description:
* @Date:Created in 2020-09-29 15:03
* @Modified By:
*/
@Configuration
public class MonkeyConfiguration {

@Bean
public MonkeyCompositeNotifier monkeyCompositeNotifier(InstanceRepository instanceRepository,
JavaMailSender mailSender) {

return new MonkeyCompositeNotifier(instanceRepository, mailSender);
}
}
New message model :MessageBody
```java
package com.admin.admin.sendMessage.model;
/**
* @Author: LailaiMonkey
* @Description:
* @Date:Created in 2020-11-06 15:48
* @Modified By:
*/
public class MessageBody {

/**
* Content
*/
private String text;
/**
* title
*/
private String title;
public String getText() {

return text;
}
public void setText(String text) {

this.text = text;
}
public String getTitle() {

return title;
}
public void setTitle(String title) {

this.title = title;
}
}

New send message class :MonkeyCompositeNotifier

package com.admin.admin;
import com.admin.admin.sendMessage.SendAllMessage;
import com.admin.admin.sendMessage.model.MessageBody;
import de.codecentric.boot.admin.server.domain.entities.Instance;
import de.codecentric.boot.admin.server.domain.entities.InstanceRepository;
import de.codecentric.boot.admin.server.domain.events.InstanceDeregisteredEvent;
import de.codecentric.boot.admin.server.domain.events.InstanceEvent;
import de.codecentric.boot.admin.server.domain.events.InstanceRegisteredEvent;
import de.codecentric.boot.admin.server.domain.events.InstanceStatusChangedEvent;
import de.codecentric.boot.admin.server.domain.values.Registration;
import de.codecentric.boot.admin.server.domain.values.StatusInfo;
import de.codecentric.boot.admin.server.notify.AbstractEventNotifier;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
import reactor.core.publisher.Mono;
import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;
import java.nio.charset.StandardCharsets;
import java.util.HashMap;
import java.util.Map;
import java.util.function.BiFunction;
/**
* @Author: LailaiMonkey
* @Description:
* @Date:Created in 2020-09-29 15:07
* @Modified By:
*/
public class MonkeyCompositeNotifier extends AbstractEventNotifier {

private static final Logger logger = LoggerFactory.getLogger(MonkeyCompositeNotifier.class);
private JavaMailSender mailSender;
@Value("${spring.boot.admin.notify.mail.from}")
private String from;
@Value("${spring.boot.admin.notify.mail.to}")
private String to;
private final static Map<Class<?>, BiFunction<InstanceEvent, Instance, MessageBody>> cacheMap = new HashMap<>();
static {

// register 
cacheMap.put(InstanceRegisteredEvent.class, MonkeyCompositeNotifier::register);
// Cancellation 
cacheMap.put(InstanceDeregisteredEvent.class, MonkeyCompositeNotifier::deRegistered);
// Change of state 
cacheMap.put(InstanceStatusChangedEvent.class, MonkeyCompositeNotifier::statusChanged);
}
public MonkeyCompositeNotifier(InstanceRepository repository, JavaMailSender mailSender) {

super(repository);
this.mailSender = mailSender;
}
@Override
protected Mono<Void> doNotify(InstanceEvent event, Instance instance) {

return Mono.fromRunnable(() -> {

BiFunction<InstanceEvent, Instance, MessageBody> messageBiFunction = cacheMap.get(event.getClass());
if (messageBiFunction != null) {

MessageBody messageBody = messageBiFunction.apply(event, instance);
MimeMessage mimeMessage = mailSender.createMimeMessage();
MimeMessageHelper message = new MimeMessageHelper(mimeMessage, StandardCharsets.UTF_8.name());
try {

message.setText(messageBody.getText());
message.setSubject(messageBody.getTitle());
message.setTo(to);
message.setFrom(from);
mailSender.send(mimeMessage);
} catch (MessagingException e) {

e.printStackTrace();
logger.error(" Send mail exception !", e);
}
}
});
}
/**
* Registration notice
*
* @param event
* @param instance
* @return
*/
private static MessageBody register(InstanceEvent event, Instance instance) {

Registration registration = instance.getRegistration();
MessageBody body = new MessageBody();
body.setText(" The service name :" + registration.getName() + " Service address :" + registration.getServiceUrl());
body.setTitle(" Service launch notification !");
return body;
}
/**
* Cancellation notice
*
* @param event
* @param instance
* @return
*/
private static MessageBody deRegistered(InstanceEvent event, Instance instance) {

Registration registration = instance.getRegistration();
MessageBody body = new MessageBody();
body.setText(" The service name :" + registration.getName() + " Service address :" + registration.getServiceUrl());
body.setTitle(" Service offline notice !");
return body;
}
/**
* Status change notification
*
* @param event
* @param instance
* @return
*/
private static MessageBody statusChanged(InstanceEvent event, Instance instance) {

StatusInfo statusInfo = ((InstanceStatusChangedEvent) event).getStatusInfo();
Registration registration = instance.getRegistration();
MessageBody body = new MessageBody();
body.setText(" The service name :" + registration.getName() + " Service address :" + registration.getServiceUrl() + " state :" + statusInfo.getStatus());
body.setTitle(" Service state variable notification !");
return body;
}
}

If you've seen the source code, you know , Self delivered mail service inheritance AbstractStatusChangeNotifier, And we need to rewrite his method to be unable to receive messages , Why is that ?
It has one shouldNotify Method , Filter out some methods . So we inherit AbstractEventNotifier.

 @Override
protected boolean shouldNotify(InstanceEvent event, Instance instance) {

if (event instanceof InstanceStatusChangedEvent) {

InstanceStatusChangedEvent statusChange = (InstanceStatusChangedEvent) event;
String from = getLastStatus(event.getInstance());
String to = statusChange.getStatusInfo().getStatus();
return Arrays.binarySearch(ignoreChanges, from + ":" + to) < 0
&& Arrays.binarySearch(ignoreChanges, "*:" + to) < 0
&& Arrays.binarySearch(ignoreChanges, from + ":*") < 0;
}
return false;
}

And his own email notification only supports InstanceStatusChangedEvent( Status change notification ), Not registered 、 Online and offline notification , So we rewrite it .

visit :http://localhost:8080 The management interface appears

Permission access configuration

  • add to Pom file
 <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
  • The configuration file
spring:
security:
user:
name: "admin"
password: "admin"

The login interface will pop up when you visit the page .

版权声明
本文为[osc_eoqljui5]所创,转载请带上原文链接,感谢

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