#35 springboot: custom metric - counter

springboot/actuator/src/main/java/hello/ActuatorApplication.java

@@ -1,13 +1,15 @@
 package hello;
 
 import hello.order.v0.OrderConfigV0;
+import hello.order.v1.OrderConfigV1;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.actuate.web.exchanges.InMemoryHttpExchangeRepository;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Import;
 
-@Import(OrderConfigV0.class)
+//@Import(OrderConfigV0.class)
+@Import(OrderConfigV1.class)
 @SpringBootApplication(scanBasePackages = "hello.controller")
 public class ActuatorApplication {
 

springboot/actuator/src/main/java/hello/order/v0/OrderServiceV0.java

@@ -19,7 +19,7 @@ public class OrderServiceV0 implements OrderService {
     @Override
     public void cancel() {
         log.info("취소");
-        stock.decrementAndGet();
+        stock.incrementAndGet();
     }
 
     @Override

springboot/actuator/src/main/java/hello/order/v1/OrderConfigV1.java

@@ -0,0 +1,16 @@
+package hello.order.v1;
+
+import hello.order.OrderService;
+import hello.order.v0.OrderServiceV0;
+import io.micrometer.core.instrument.MeterRegistry;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class OrderConfigV1 {
+
+    @Bean
+    OrderService orderService(MeterRegistry registry) {
+        return new OrderServiceV1(registry);
+    }
+}

springboot/actuator/src/main/java/hello/order/v1/OrderServiceV1.java

@@ -0,0 +1,49 @@
+package hello.order.v1;
+
+import hello.order.OrderService;
+import io.micrometer.core.instrument.Counter;
+import io.micrometer.core.instrument.MeterRegistry;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+
+import java.util.concurrent.atomic.AtomicInteger;
+
+@Slf4j
+@RequiredArgsConstructor
+public class OrderServiceV1 implements OrderService {
+
+    private final MeterRegistry registry;
+
+    private final AtomicInteger stock = new AtomicInteger(100);
+
+    @Override
+    public void order() {
+        log.info("주문");
+        stock.decrementAndGet();
+
+        Counter.builder("my.order")
+                .tag("class", this.getClass().getName())
+                .tag("method", "order")
+                .description("order")
+                .register(registry)
+                .increment();
+    }
+
+    @Override
+    public void cancel() {
+        log.info("취소");
+        stock.incrementAndGet();
+
+        Counter.builder("my.order")
+                .tag("class", this.getClass().getName())
+                .tag("method", "cancel")
+                .description("order")
+                .register(registry)
+                .increment();
+    }
+
+    @Override
+    public AtomicInteger getStock() {
+        return stock;
+    }
+}