[톰캣 구현하기 - 3, 4 단계] - 제나(위예나) 미션 제출합니다

README.md

@@ -15,3 +15,14 @@
 - [x] Login 도 POST 로 변경
 - [x] Cookie에 JSESSIONID 값 저장하기
 - [x] Session 구현하기
+
+### 3단계 - 리팩터링
+
+- [x] HttpRequest 클래스 구현하기
+- [x] HttpResponse 클래스 구현하기
+- [x] Controller 인터페이스 추가하기
+
+### 4단계 - 동시성 확장하기
+
+- [x] Executors로 Thread Pool 적용
+- [x] 동시성 컬렉션 사용하기

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

@@ -0,0 +1,37 @@
+package nextstep.jwp.controller;
+
+import org.apache.coyote.Controller;
+import org.apache.coyote.request.HttpRequest;
+import org.apache.coyote.response.HttpResponse;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import static org.apache.coyote.common.ContentType.HTML;
+import static org.apache.coyote.common.Headers.LOCATION;
+import static org.apache.coyote.response.HttpStatus.FOUND;
+
+public class AbstractController implements Controller {
+
+    protected static final Logger log = LoggerFactory.getLogger(AbstractController.class);
+
+    @Override
+    public void service(HttpRequest request, HttpResponse response) throws Exception {
+
+        try {
+            if (request.getRequestLine().isGetMethod()) {
+                doGet(request, response);
+            }
+            if (request.getRequestLine().isPostMethod()) {
+                doPost(request, response);
+            }
+        } catch (Exception e) {
+            response.setStatus(FOUND);
+            response.setContentType(HTML);
+            response.addHeader(LOCATION, "/500.html");
+        }
+    }
+
+    protected void doPost(HttpRequest request, HttpResponse response) throws Exception { /* NOOP */ }
+
+    protected void doGet(HttpRequest request, HttpResponse response) throws Exception { /* NOOP */ }
+}

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

@@ -0,0 +1,37 @@
+package nextstep.jwp.controller;
+
+import org.apache.coyote.Controller;
+import org.apache.coyote.common.ContentType;
+import org.apache.coyote.request.HttpRequest;
+import org.apache.coyote.request.RequestUri;
+import org.apache.coyote.response.HttpResponse;
+import org.apache.coyote.utils.FileUtils;
+
+import static org.apache.coyote.common.ContentType.HTML;
+import static org.apache.coyote.common.Headers.LOCATION;
+import static org.apache.coyote.response.HttpStatus.FOUND;
+
+public class DefaultController extends AbstractController {
+
+    private static final Controller INSTANCE = new DefaultController();
+
+    public static Controller getInstance() {
+        return INSTANCE;
+    }
+
+    @Override
+    protected void doGet(HttpRequest request, HttpResponse response) throws Exception {
+        RequestUri requestUri = request.getRequestLine().getRequestUri();
+
+
+        try {
+            FileUtils.readFile(requestUri.getPath());
+            response.setContentType(ContentType.from(requestUri.getExtension()));
+            response.setBody(FileUtils.readFile(requestUri.getPath()));
+        } catch (NullPointerException e) {
+            response.setStatus(FOUND);
+            response.setContentType(HTML);
+            response.addHeader(LOCATION, "/404.html");
+        }
+    }
+}

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

@@ -0,0 +1,93 @@
+package nextstep.jwp.controller;
+
+import nextstep.jwp.db.InMemoryUserRepository;
+import nextstep.jwp.model.User;
+import org.apache.catalina.manager.SessionManager;
+import org.apache.coyote.Controller;
+import org.apache.coyote.common.HttpCookie;
+import org.apache.coyote.common.Session;
+import org.apache.coyote.request.HttpRequest;
+import org.apache.coyote.request.HttpRequestBody;
+import org.apache.coyote.response.HttpResponse;
+import org.apache.coyote.utils.FileUtils;
+
+import java.util.Optional;
+
+import static org.apache.coyote.common.ContentType.HTML;
+import static org.apache.coyote.common.Headers.JSESSIONID;
+import static org.apache.coyote.common.Headers.LOCATION;
+import static org.apache.coyote.response.HttpStatus.FOUND;
+import static org.apache.coyote.response.HttpStatus.OK;
+
+public class LoginController extends AbstractController {
+
+    private static final Controller INSTANCE = new LoginController();
+
+    public static Controller getInstance() {
+        return INSTANCE;
+    }
+
+    @Override
+    protected void doPost(HttpRequest request, HttpResponse response) throws Exception {
+        HttpRequestBody httpRequestBody = request.getRequestBody();
+        String account = httpRequestBody.getValue("account");
+        String password = httpRequestBody.getValue("password");
+
+        Optional<User> user = InMemoryUserRepository.findByAccount(account);
+
+        if (user.isPresent() && user.get().checkPassword(password)) {
+            log.info(user.toString());
+
+            loginSuccess(user, response);
+
+        } else if (user.isPresent()) {
+            log.warn("비밀번호가 틀렸습니다");
+
+            loginFail(response);
+
+        } else {
+            log.warn("미가입회원입니다");
+
+            loginFail(response);
+        }
+    }
+
+    private void loginSuccess(Optional<User> user, HttpResponse response) {
+        Session session = new Session();
+        session.setAttribute("user", user);
+        SessionManager.add(session);
+
+        HttpCookie cookie = HttpCookie.of(JSESSIONID + "=" + session.getId());
+
+        response.setStatus(FOUND);
+        response.setContentType(HTML);
+        response.addHeader(LOCATION, "/index.html");
+        response.setCookie(cookie);
+    }
+
+    private void loginFail(HttpResponse response) {
+        response.setStatus(FOUND);
+        response.setContentType(HTML);
+        response.addHeader(LOCATION, "/401.html");
+    }
+
+
+    @Override
+    protected void doGet(HttpRequest request, HttpResponse response) throws Exception {
+        HttpCookie cookie = request.getRequestHeader().getCookie();
+
+        String jsessionid = cookie.getValue(JSESSIONID);
+        Optional<Session> session = SessionManager.findSession(jsessionid);
+
+        if (session.isPresent()) {
+            response.setStatus(FOUND);
+            response.addHeader(LOCATION, "/index.html");
+            response.setContentType(HTML);
+            return;
+        }
+
+        response.setStatus(OK);
+        response.setContentType(HTML);
+        response.setBody(FileUtils.readFile("/login.html"));
+    }
+}

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

@@ -0,0 +1,51 @@
+package nextstep.jwp.controller;
+
+import nextstep.jwp.db.InMemoryUserRepository;
+import nextstep.jwp.model.User;
+import org.apache.coyote.Controller;
+import org.apache.coyote.common.ContentType;
+import org.apache.coyote.request.HttpRequest;
+import org.apache.coyote.request.HttpRequestBody;
+import org.apache.coyote.request.RequestUri;
+import org.apache.coyote.response.HttpResponse;
+import org.apache.coyote.utils.FileUtils;
+
+import static org.apache.coyote.common.ContentType.HTML;
+import static org.apache.coyote.common.Headers.LOCATION;
+import static org.apache.coyote.response.HttpStatus.FOUND;
+
+public class RegisterController extends AbstractController {
+
+    private static final Controller INSTANCE = new RegisterController();
+
+    public static Controller getInstance() {
+        return INSTANCE;
+    }
+
+    @Override
+    protected void doPost(HttpRequest request, HttpResponse response) throws Exception {
+        HttpRequestBody httpRequestBody = request.getRequestBody();
+
+        String account = httpRequestBody.getValue("account");
+        String password = httpRequestBody.getValue("password");
+        String email = httpRequestBody.getValue("email");
+
+        if (InMemoryUserRepository.findByAccount(account).isPresent()) {
+            throw new IllegalArgumentException("중복 ID 입니다");
+        }
+
+        InMemoryUserRepository.save(new User(account, password, email));
+
+        response.setStatus(FOUND);
+        response.setContentType(HTML);
+        response.addHeader(LOCATION, "/index.html");
+    }
+
+    @Override
+    protected void doGet(HttpRequest request, HttpResponse response) throws Exception {
+        RequestUri requestUri = request.getRequestLine().getRequestUri();
+
+        response.setContentType(ContentType.from(requestUri.getExtension()));
+        response.setBody(FileUtils.readFile("/register.html"));
+    }
+}

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

@@ -0,0 +1,22 @@
+package nextstep.jwp.controller;
+
+import org.apache.coyote.Controller;
+import org.apache.coyote.request.HttpRequest;
+import org.apache.coyote.response.HttpResponse;
+
+import static org.apache.coyote.common.ContentType.HTML;
+
+public class RootController extends AbstractController {
+
+    private static final Controller INSTANCE = new RootController();
+
+    public static Controller getInstance() {
+        return INSTANCE;
+    }
+
+    @Override
+    protected void doGet(HttpRequest request, HttpResponse response) throws Exception {
+        response.setContentType(HTML);
+        response.setBody("Hello world!");
+    }
+}

tomcat/src/main/java/org/apache/catalina/connector/Connector.java

@@ -4,19 +4,25 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.awt.*;
 import java.io.IOException;
 import java.io.UncheckedIOException;
 import java.net.ServerSocket;
 import java.net.Socket;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
 
 public class Connector implements Runnable {
 
     private static final Logger log = LoggerFactory.getLogger(Connector.class);
 
     private static final int DEFAULT_PORT = 8080;
     private static final int DEFAULT_ACCEPT_COUNT = 100;
+    private static final int DEFAULT_MAX_THREADS = 250;
 
     private final ServerSocket serverSocket;
+    private final ExecutorService executorService;
+
     private boolean stopped;
 
     public Connector() {
@@ -26,6 +32,13 @@ public Connector() {
     public Connector(final int port, final int acceptCount) {
         this.serverSocket = createServerSocket(port, acceptCount);
         this.stopped = false;
+        this.executorService = Executors.newFixedThreadPool(DEFAULT_MAX_THREADS);
+    }
+
+    public Connector(final Container container, final int port, final int acceptCount, final int maxThreads) {
+        this.serverSocket = createServerSocket(port, acceptCount);
+        this.stopped = false;
+        this.executorService = Executors.newFixedThreadPool(maxThreads);
     }
 
     private ServerSocket createServerSocket(final int port, final int acceptCount) {
@@ -67,13 +80,14 @@ private void process(final Socket connection) {
             return;
         }
         var processor = new Http11Processor(connection);
-        new Thread(processor).start();
+        executorService.execute(processor);
     }
 
     public void stop() {
         stopped = true;
         try {
             serverSocket.close();
+            executorService.shutdown();
         } catch (IOException e) {
             log.error(e.getMessage(), e);
         }

tomcat/src/main/java/org/apache/catalina/manager/SessionManager.java

@@ -2,12 +2,13 @@
 
 import org.apache.coyote.common.Session;
 
-import java.util.HashMap;
 import java.util.Map;
+import java.util.Optional;
+import java.util.concurrent.ConcurrentHashMap;
 
 public class SessionManager {
 
-    private static final Map<String, Session> SESSIONS = new HashMap<>();
+    private static final Map<String, Session> SESSIONS = new ConcurrentHashMap<>();
 
     private SessionManager() {
     }
@@ -16,8 +17,11 @@ public static void add(final Session session) {
         SESSIONS.put(session.getId(), session);
     }
 
-    public static Session findSession(final String id) {
-        return SESSIONS.get(id);
+    public static Optional<Session> findSession(final String id) {
+        if (id == null) {
+            return Optional.empty();
+        }
+        return Optional.ofNullable(SESSIONS.get(id));
     }
 
     public void remove(final String id) {

tomcat/src/main/java/org/apache/coyote/Controller.java

@@ -0,0 +1,8 @@
+package org.apache.coyote;
+
+import org.apache.coyote.request.HttpRequest;
+import org.apache.coyote.response.HttpResponse;
+
+public interface Controller {
+    void service(HttpRequest request, HttpResponse response) throws Exception;
+}

tomcat/src/main/java/org/apache/coyote/RequestMapping.java

@@ -0,0 +1,36 @@
+package org.apache.coyote;
+
+import nextstep.jwp.controller.DefaultController;
+import nextstep.jwp.controller.LoginController;
+import nextstep.jwp.controller.RegisterController;
+import nextstep.jwp.controller.RootController;
+import org.apache.coyote.request.HttpRequest;
+import org.apache.coyote.request.RequestUri;
+
+import java.util.Map;
+
+public class RequestMapping {
+
+    private static final Map<String, Controller> mappers;
+
+    static {
+        mappers = Map.of(
+                "/", RootController.getInstance(),
+                "/login", LoginController.getInstance(),
+                "/register", RegisterController.getInstance());
+    }
+
+
+    public Controller getController(HttpRequest request) {
+        RequestUri requestUri = request.getRequestLine().getRequestUri();
+
+        String path = requestUri.getPath();
+
+        return mappers.entrySet()
+                .stream()
+                .filter(entry -> path.equals(entry.getKey()))
+                .map(Map.Entry::getValue)
+                .findFirst()
+                .orElse(DefaultController.getInstance());
+    }
+}