ApplicationMonitoring

dependencies.gradle

dependencies {
    implementation(
      "io.micrometer:micrometer-core:${micrometerVersion}",
      "io.micrometer:micrometer-registry-prometheus:${micrometerVersion}",
      
      "org.springframework.boot:spring-boot-starter-actuator:${spring_boot_version}"   
    )
}

HubMetricsConfiguration.java

@Configuration
@EnableConfigurationProperties(CommonTags.class)
public class HubMetricsConfiguration {

    @Bean
    public MeterRegistryCustomizer<MeterRegistry> meterRegistryCustomizer( CommonTags tags ) {

        return registry -> registry.config()
            .commonTags("applicationInstance", tags.getInstanceId(),
                "applicationName", tags.getApplicationName(),
                "productGroup", tags.getProductGroup(),
                "productName", tags.getProductName(),
                "environment", tags.getServicedEnvironment());
    }

    @Bean
    public TimedAspect timedAspect(MeterRegistry registry) {
        return new TimedAspect(registry);
    }
}

metric.html

# HELP hub_task_seconds  
# TYPE hub_task_seconds summary

hub_task_seconds_count{ applicationInstance="25005",applicationName="Hub",num_executions="0",
productGroup="integration",productName="Hub",servicedEnvironment="dev",type="OrderAssignedToLager",action="SyncBack" } 1.0

hub_task_seconds_sum {
applicationInstance="25005",
applicationName="Hub",
num_executions="0",
productGroup="integration",
productName="Hub",
servicedEnvironment="dev",
type="X"
action="SyncBack" } 1.786964501

metric.java

    private final MeterRegistry meterRegistry;

    @Timed(
        value = "hub.task.histo",
        histogram = true,
        percentiles = {0.5, 0.90, 0.95},
        extraTags = {
            "type", "all",
            "action", "all"
        }
    )
    public TaskExecution execute(Task task) {

        task.setUuid(UUID.randomUUID());
        TaskEntity domain = mapper.mapToDomain(task);

        return meterRegistry.timer("hub.task",
            "type", api.getType(),
            "action", api.getAction(),
            "num_executions", String.valueOf(domain.getNumExecutions()))
            .record(() -> execute(task, domain.asRunning()));
    }


    private TaskExecution execute(Task api, TaskEntity domain) {
        //Make your BL magic here 
    }

metricConfig.yml

spring:
  application:
    name: Sync-Hub
    
management:
  endpoints:
    web:
      exposure:
        include: health,status,info,metrics,prometheus
  metrics:
    tags:
      application: ${spring.application.name}
      productGroup: integration
      productName: Hub
      servicedEnvironment: dev
    enable:
      tomcat: true
      hikaricp: true
      jvm: true
      jvm.memory: true
      jvm.gc.pause: true
      jdbc: true

prometheus.yml

scrape_configs:
- job_name: Hub
  honor_timestamps: true
  scrape_interval: 5s
  scrape_timeout: 5s
  metrics_path: actuator/prometheus
  scheme: http
  static_configs:
  - targets:
    - localhost:25005