[톰캣 구현하기 3, 4단계] 토리(천은정) 미션 제출합니다. (#491)

* feat: GreetingControllerTest 변경

* refactor: HttpRequest 클래스 구현

- HttpRequest 클래스 구조 분리 및 역할 세분화
    - HttpRequestLine
        - HttpMethod
        - HttpPath
        - HttpProtocol
    - HttpRequestHeaders
    - HttpRequestBody
- HttpProtocol enum 클래스 추가

* refactor: Controller 인터페이스 추가

- HttpResponse 구조 변경
- HttpRequest 객체의 요청을 처리할 FrontController 추가
- Http11Processor 내부 HttpRequest path로 인한 분기 로직 책임 분리

* feat: 동시성 확장

* refactor: 의존 관계 분리

* fix: 로그인 문제 해결

Author: cheon-eunjeong

study/src/main/java/cache/com/example/cachecontrol/CacheWebConfig.java

@@ -1,13 +1,21 @@
 package cache.com.example.cachecontrol;
 
 import org.springframework.context.annotation.Configuration;
+import org.springframework.http.CacheControl;
 import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+import org.springframework.web.servlet.mvc.WebContentInterceptor;
 
 @Configuration
 public class CacheWebConfig implements WebMvcConfigurer {
 
     @Override
     public void addInterceptors(final InterceptorRegistry registry) {
+        final WebContentInterceptor webContentInterceptor = new WebContentInterceptor();
+        final CacheControl cacheControl = CacheControl
+                .noCache()
+                .cachePrivate();
+        webContentInterceptor.addCacheMapping(cacheControl, "/**");
+        registry.addInterceptor(webContentInterceptor);
     }
 }

study/src/main/java/cache/com/example/etag/EtagFilterConfiguration.java

@@ -1,12 +1,19 @@
 package cache.com.example.etag;
 
+import org.springframework.boot.web.servlet.FilterRegistrationBean;
+import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.web.filter.ShallowEtagHeaderFilter;
+
+import static cache.com.example.version.CacheBustingWebConfig.PREFIX_STATIC_RESOURCES;
 
 @Configuration
 public class EtagFilterConfiguration {
-
-//    @Bean
-//    public FilterRegistrationBean<ShallowEtagHeaderFilter> shallowEtagHeaderFilter() {
-//        return null;
-//    }
+    @Bean
+    public FilterRegistrationBean<ShallowEtagHeaderFilter> shallowEtagHeaderFilter() {
+        FilterRegistrationBean<ShallowEtagHeaderFilter> filterFilterRegistrationBean
+                = new FilterRegistrationBean<>(new ShallowEtagHeaderFilter());
+        filterFilterRegistrationBean.addUrlPatterns("/etag", PREFIX_STATIC_RESOURCES + "/*");
+        return filterFilterRegistrationBean;
+    }
 }

study/src/main/java/cache/com/example/version/CacheBustingWebConfig.java

@@ -2,9 +2,12 @@
 
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.http.CacheControl;
 import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 
+import java.time.Duration;
+
 @Configuration
 public class CacheBustingWebConfig implements WebMvcConfigurer {
 
@@ -20,6 +23,7 @@ public CacheBustingWebConfig(ResourceVersion version) {
     @Override
     public void addResourceHandlers(final ResourceHandlerRegistry registry) {
         registry.addResourceHandler(PREFIX_STATIC_RESOURCES + "/" + version.getVersion() + "/**")
-                .addResourceLocations("classpath:/static/");
+                .addResourceLocations("classpath:/static/")
+                .setCacheControl(CacheControl.maxAge(Duration.ofDays(365)).cachePublic());
     }
 }

study/src/main/resources/application.yml

@@ -2,6 +2,9 @@ handlebars:
   suffix: .html
 
 server:
+  compression:
+    enabled: true
+    min-response-size: 10
   tomcat:
     accept-count: 1
     max-connections: 1

study/src/test/java/thread/stage0/SynchronizationTest.java

@@ -12,7 +12,7 @@
  * 다중 스레드 환경에서 두 개 이상의 스레드가 변경 가능한(mutable) 공유 데이터를 동시에 업데이트하면 경쟁 조건(race condition)이 발생한다.
  * 자바는 공유 데이터에 대한 스레드 접근을 동기화(synchronization)하여 경쟁 조건을 방지한다.
  * 동기화된 블록은 하나의 스레드만 접근하여 실행할 수 있다.
- *
+ * <p>
  * Synchronization
  * https://docs.oracle.com/javase/tutorial/essential/concurrency/sync.html
  */
@@ -21,7 +21,7 @@ class SynchronizationTest {
     /**
      * 테스트가 성공하도록 SynchronizedMethods 클래스에 동기화를 적용해보자.
      * synchronized 키워드에 대하여 찾아보고 적용하면 된다.
-     *
+     * <p>
      * Guide to the Synchronized Keyword in Java
      * https://www.baeldung.com/java-synchronized
      */
@@ -41,7 +41,7 @@ private static final class SynchronizedMethods {
 
         private int sum = 0;
 
-        public void calculate() {
+        public synchronized void calculate() {
             setSum(getSum() + 1);
         }
 

study/src/test/java/thread/stage0/ThreadPoolsTest.java

@@ -12,10 +12,10 @@
 /**
  * 스레드 풀은 무엇이고 어떻게 동작할까?
  * 테스트를 통과시키고 왜 해당 결과가 나왔는지 생각해보자.
- *
+ * <p>
  * Thread Pools
  * https://docs.oracle.com/javase/tutorial/essential/concurrency/pools.html
- *
+ * <p>
  * Introduction to Thread Pools in Java
  * https://www.baeldung.com/thread-pool-java-and-guava
  */
@@ -31,8 +31,8 @@ void testNewFixedThreadPool() {
         executor.submit(logWithSleep("hello fixed thread pools"));
 
         // 올바른 값으로 바꿔서 테스트를 통과시키자.
-        final int expectedPoolSize = 0;
-        final int expectedQueueSize = 0;
+        final int expectedPoolSize = 2;
+        final int expectedQueueSize = 1;
 
         assertThat(expectedPoolSize).isEqualTo(executor.getPoolSize());
         assertThat(expectedQueueSize).isEqualTo(executor.getQueue().size());
@@ -46,7 +46,7 @@ void testNewCachedThreadPool() {
         executor.submit(logWithSleep("hello cached thread pools"));
 
         // 올바른 값으로 바꿔서 테스트를 통과시키자.
-        final int expectedPoolSize = 0;
+        final int expectedPoolSize = 3;
         final int expectedQueueSize = 0;
 
         assertThat(expectedPoolSize).isEqualTo(executor.getPoolSize());

tomcat/src/main/java/nextstep/Application.java

@@ -1,11 +1,17 @@
 package nextstep;
 
+import nextstep.jwp.controller.HomeController;
+import nextstep.jwp.controller.LoginController;
+import nextstep.jwp.controller.RegisterController;
 import org.apache.catalina.startup.Tomcat;
 
 public class Application {
 
     public static void main(String[] args) {
         final var tomcat = new Tomcat();
+        tomcat.addController("/", new HomeController());
+        tomcat.addController("/login", new LoginController());
+        tomcat.addController("/register", new RegisterController());
         tomcat.start();
     }
 }

tomcat/src/main/java/nextstep/jwp/controller/HomeController.java

@@ -0,0 +1,17 @@
+package nextstep.jwp.controller;
+
+import org.apache.coyote.http11.controller.AbstractController;
+import org.apache.coyote.http11.request.HttpRequest;
+import org.apache.coyote.http11.response.HttpResponse;
+
+public class HomeController extends AbstractController {
+    @Override
+    protected void doPost(final HttpRequest request, final HttpResponse response) throws Exception {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    protected void doGet(final HttpRequest request, final HttpResponse response) throws Exception {
+        response.home("Hello world!");
+    }
+}

tomcat/src/main/java/nextstep/jwp/controller/LoginController.java

@@ -0,0 +1,57 @@
+package nextstep.jwp.controller;
+
+import nextstep.jwp.db.InMemoryUserRepository;
+import nextstep.jwp.model.User;
+import org.apache.coyote.http11.common.HttpUri;
+import org.apache.coyote.http11.controller.AbstractController;
+import org.apache.coyote.http11.cookie.HttpCookie;
+import org.apache.coyote.http11.request.HttpRequest;
+import org.apache.coyote.http11.response.HttpResponse;
+import org.apache.coyote.http11.session.HttpSession;
+import org.apache.coyote.http11.session.SessionManager;
+
+import java.util.Map;
+import java.util.Objects;
+
+public class LoginController extends AbstractController {
+    private static final SessionManager sessionManager = SessionManager.create();
+    private static final String USER = "user";
+    private static final String PASSWORD = "password";
+
+    @Override
+    protected void doPost(final HttpRequest request, final HttpResponse response) throws Exception {
+        final Map<String, String> loginData = request.getBody();
+        final User user = InMemoryUserRepository.findByAccount(loginData.get("account"))
+                .orElse(null);
+        if (!Objects.isNull(user) && user.checkPassword(loginData.get(PASSWORD))) {
+            final HttpCookie newCookie = HttpCookie.create();
+            saveSession(newCookie, user);
+            response.found(HttpUri.INDEX_HTML.getUri());
+            response.setCookie(newCookie.getJSESSIONID());
+            return;
+        }
+        response.ok(HttpUri.UNAUTHORIZED_HTML.getUri());
+    }
+
+    @Override
+    protected void doGet(final HttpRequest request, final HttpResponse response) {
+        final HttpCookie cookie = makeHttpCookie(request);
+        if (cookie.hasJSESSIONID()) {
+            final String jsessionid = cookie.getJSESSIONID();
+            final HttpSession httpSession = sessionManager.findSession(jsessionid);
+            if (Objects.isNull(httpSession)) {
+                response.ok(HttpUri.LOGIN_HTML.getUri());
+                return;
+            }
+            response.found(HttpUri.INDEX_HTML.getUri());
+            return;
+        }
+        response.ok(HttpUri.LOGIN_HTML.getUri());
+    }
+
+    private void saveSession(final HttpCookie newCookie, final User user) {
+        final HttpSession httpSession = new HttpSession(newCookie.getJSESSIONID());
+        httpSession.setAttribute(USER, user);
+        sessionManager.add(httpSession);
+    }
+}

tomcat/src/main/java/nextstep/jwp/controller/RegisterController.java

@@ -0,0 +1,24 @@
+package nextstep.jwp.controller;
+
+import nextstep.jwp.db.InMemoryUserRepository;
+import nextstep.jwp.model.User;
+import org.apache.coyote.http11.common.HttpUri;
+import org.apache.coyote.http11.controller.AbstractController;
+import org.apache.coyote.http11.request.HttpRequest;
+import org.apache.coyote.http11.response.HttpResponse;
+
+import java.util.Map;
+
+public class RegisterController extends AbstractController {
+    @Override
+    protected void doPost(final HttpRequest request, final HttpResponse response) throws Exception {
+        final Map<String, String> registerData = request.getBody();
+        InMemoryUserRepository.save(new User(registerData.get("account"), registerData.get("password"), registerData.get("email")));
+        response.ok(HttpUri.INDEX_HTML.getUri());
+    }
+
+    @Override
+    protected void doGet(final HttpRequest request, final HttpResponse response) throws Exception {
+        response.ok(HttpUri.REGISTER.getUri());
+    }
+}