스프링 부트 2.4 살펴보기

build.gradle

@@ -1,5 +1,5 @@
 plugins {
-    id 'org.springframework.boot' version '2.5.2'
+    id 'org.springframework.boot' version '2.4.1'
     id 'io.spring.dependency-management' version '1.0.11.RELEASE'
     id 'java'
 }
@@ -13,8 +13,11 @@ repositories {
 }
 
 dependencies {
+    implementation 'org.springframework.boot:spring-boot-starter-actuator'
+    implementation 'org.springframework.boot:spring-boot-properties-migrator'
     implementation 'org.springframework.boot:spring-boot-starter-web'
     testImplementation 'org.springframework.boot:spring-boot-starter-test'
+    annotationProcessor 'org.springframework.boot:spring-boot-configuration-processor'
 }
 
 test {

src/main/java/com/fastcampus/springbootpractice/FastcampusSpringBootPracticeApplication.java

@@ -2,12 +2,19 @@
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.context.metrics.buffering.BufferingApplicationStartup;
+import org.springframework.boot.context.properties.ConfigurationPropertiesScan;
+import org.springframework.core.metrics.jfr.FlightRecorderApplicationStartup;
 
+@ConfigurationPropertiesScan
 @SpringBootApplication
 public class FastcampusSpringBootPracticeApplication {
 
     public static void main(String[] args) {
-        SpringApplication.run(FastcampusSpringBootPracticeApplication.class, args);
+        SpringApplication application = new SpringApplication(FastcampusSpringBootPracticeApplication.class);
+//        application.setApplicationStartup(new FlightRecorderApplicationStartup());
+        application.setApplicationStartup(new BufferingApplicationStartup(1000));
+        application.run(args);
     }
 
 }

src/main/java/com/fastcampus/springbootpractice/properties/CustomProperties.java

@@ -0,0 +1,29 @@
+package com.fastcampus.springbootpractice.properties;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.boot.context.properties.ConstructorBinding;
+import org.springframework.boot.context.properties.bind.DefaultValue;
+import org.springframework.boot.context.properties.bind.Name;
+import org.springframework.boot.convert.DurationUnit;
+
+import java.time.Duration;
+import java.time.temporal.ChronoUnit;
+
+@ConstructorBinding
+@ConfigurationProperties("iam")
+public class CustomProperties {
+
+    /**
+     * 와아 이건 configuration processor 테스트
+     */
+    private final Duration duration;
+
+    public CustomProperties(@DefaultValue("1") @DurationUnit(ChronoUnit.MILLIS) @Name("duration") Duration duration) {
+        this.duration = duration;
+    }
+
+    public Duration getDuration() {
+        return duration;
+    }
+
+}

src/main/java/com/fastcampus/springbootpractice/service/SortService.java

@@ -1,6 +1,7 @@
 package com.fastcampus.springbootpractice.service;
 
 import com.fastcampus.springbootpractice.logic.Sort;
+import com.fastcampus.springbootpractice.properties.CustomProperties;
 import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.stereotype.Service;
 
@@ -12,9 +13,10 @@ public class SortService {
     private final Sort<String> sort;
 
 
-    public SortService(@Qualifier("bubbleSort") Sort<String> sort) {
-        this.sort = sort;
+    public SortService(@Qualifier("bubbleSort") Sort<String> sort, CustomProperties customProperties) {
+        System.out.println("프로퍼티: " + customProperties.getDuration().toMillis() + " ms");
         System.out.println("구현체: " + sort.getClass().getName());
+        this.sort = sort;
     }
 
     public List<String> doSort(List<String> list) {

src/main/resources/application.properties

@@ -1 +1,9 @@
+logging.logback.rollingpolicy.file-name-pattern=rolling.txt
+management.endpoints.web.exposure.include=*
+spring.config.import=classpath:my[.properties],configtree:/Users/Uno/Documents/github/fastcampus-spring-boot-practice/src/main/resources/tree/
+spring.profiles.active=test
 
+#---
+
+spring.config.activate.on-profile=fastcampus | test
+iam.duration=5s

src/main/resources/my

@@ -0,0 +1 @@
+iam.duration=10s

src/main/resources/tree/iam/duration

@@ -0,0 +1 @@
+12s