add reactive/webflux/java folder

reactive/webflux/java/authentication/username-password/form/src/integTest/java/example/WebfluxFormApplicationITests.java

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+/*
+ * Copyright 2020 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package example;
+
+import com.gargoylesoftware.htmlunit.BrowserVersion;
+import example.pages.IndexPage;
+import example.pages.LoginPage;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.openqa.selenium.WebDriver;
+import org.openqa.selenium.htmlunit.HtmlUnitDriver;
+
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.web.server.LocalServerPort;
+
+/**
+ * Integration tests for WebFlux based form log in sample.
+ *
+ * @author Rob Winch
+ * @since 5.0
+ */
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
+public class WebfluxFormApplicationITests {
+
+	WebDriver driver;
+
+	@LocalServerPort
+	int port;
+
+	@BeforeEach
+	void setup() {
+		this.driver = new HtmlUnitDriver(BrowserVersion.CHROME);
+	}
+
+	@Test
+	void loginWhenInvalidUsernameThenError() {
+		LoginPage login = IndexPage.to(this.driver, this.port, LoginPage.class);
+		login.assertAt();
+
+		login.loginForm().username("invalid").password("password").submit(LoginPage.class).assertError();
+	}
+
+	@Test
+	void loginAndLogout() {
+		LoginPage login = IndexPage.to(this.driver, this.port, LoginPage.class);
+		login.assertAt();
+
+		IndexPage index = login.loginForm().username("user").password("password").submit(IndexPage.class);
+		index.assertAt();
+
+		login = index.logout();
+		login.assertAt().assertLogout();
+	}
+
+}

reactive/webflux/java/authentication/username-password/form/src/integTest/java/example/pages/IndexPage.java

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+/*
+ * Copyright 2020 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package example.pages;
+
+import org.openqa.selenium.WebDriver;
+import org.openqa.selenium.WebElement;
+import org.openqa.selenium.support.PageFactory;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * The index page.
+ *
+ * @author Rob Winch
+ * @since 5.0
+ */
+public class IndexPage {
+
+	private WebDriver driver;
+
+	private WebElement logout;
+
+	public IndexPage(WebDriver webDriver) {
+		this.driver = webDriver;
+	}
+
+	public static <T> T to(WebDriver driver, int port, Class<T> page) {
+		driver.get("http://localhost:" + port + "/");
+		return PageFactory.initElements(driver, page);
+	}
+
+	public IndexPage assertAt() {
+		assertThat(this.driver.getTitle()).isEqualTo("Secured");
+		return this;
+	}
+
+	public LoginPage logout() {
+		this.logout.click();
+		return LoginPage.create(this.driver);
+	}
+
+}

reactive/webflux/java/authentication/username-password/form/src/integTest/java/example/pages/LoginPage.java

@@ -0,0 +1,101 @@
+/*
+ * Copyright 2020 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package example.pages;
+
+import org.openqa.selenium.WebDriver;
+import org.openqa.selenium.WebElement;
+import org.openqa.selenium.support.FindBy;
+import org.openqa.selenium.support.PageFactory;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * The custom log in page.
+ *
+ * @author Rob Winch
+ * @since 5.0
+ */
+public class LoginPage {
+
+	private WebDriver driver;
+
+	@FindBy(css = "div[role=alert]")
+	private WebElement alert;
+
+	private LoginForm loginForm;
+
+	public LoginPage(WebDriver webDriver) {
+		this.driver = webDriver;
+		this.loginForm = PageFactory.initElements(webDriver, LoginForm.class);
+	}
+
+	static LoginPage create(WebDriver driver) {
+		return PageFactory.initElements(driver, LoginPage.class);
+	}
+
+	public LoginPage assertAt() {
+		assertThat(this.driver.getTitle()).isEqualTo("Please Log In");
+		return this;
+	}
+
+	public LoginPage assertError() {
+		assertThat(this.alert.getText()).isEqualTo("Invalid username and password.");
+		return this;
+	}
+
+	public LoginPage assertLogout() {
+		assertThat(this.alert.getText()).isEqualTo("You have been logged out.");
+		return this;
+	}
+
+	public LoginForm loginForm() {
+		return this.loginForm;
+	}
+
+	public static class LoginForm {
+
+		private WebDriver driver;
+
+		private WebElement username;
+
+		private WebElement password;
+
+		@FindBy(css = "button[type=submit]")
+		private WebElement submit;
+
+		public LoginForm(WebDriver driver) {
+			this.driver = driver;
+		}
+
+		public LoginForm username(String username) {
+			this.username.sendKeys(username);
+			return this;
+		}
+
+		public LoginForm password(String password) {
+			this.password.sendKeys(password);
+			return this;
+		}
+
+		public <T> T submit(Class<T> page) {
+			this.submit.click();
+			return PageFactory.initElements(this.driver, page);
+		}
+
+	}
+
+}

reactive/webflux/java/authentication/username-password/form/src/main/java/example/IndexController.java

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+/*
+ * Copyright 2020 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package example;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+
+/**
+ * Sends the user to the views.
+ *
+ * @author Rob Winch
+ * @since 5.0
+ */
+@Controller
+public class IndexController {
+
+	@GetMapping("/")
+	public String index() {
+		return "index";
+	}
+
+	@GetMapping("/login")
+	public String login() {
+		return "login";
+	}
+
+}

reactive/webflux/java/authentication/username-password/form/src/main/java/example/WebfluxFormApplication.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2020 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package example;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+/**
+ * Demonstrates how to make a webflux based application with a custom form log in.
+ *
+ * @author Rob Winch
+ * @since 5.0
+ */
+@SpringBootApplication
+public class WebfluxFormApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(WebfluxFormApplication.class, args);
+	}
+
+}

reactive/webflux/java/authentication/username-password/form/src/main/java/example/WebfluxFormSecurityConfiguration.java

@@ -0,0 +1,68 @@
+/*
+ * Copyright 2020 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package example;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.config.annotation.web.reactive.EnableWebFluxSecurity;
+import org.springframework.security.config.web.server.ServerHttpSecurity;
+import org.springframework.security.core.userdetails.MapReactiveUserDetailsService;
+import org.springframework.security.core.userdetails.User;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.security.web.server.SecurityWebFilterChain;
+
+import static org.springframework.security.config.Customizer.withDefaults;
+
+/**
+ * WebFlux configuration for custom log in page.
+ *
+ * @author Rob Winch
+ * @since 5.0
+ */
+@Configuration
+@EnableWebFluxSecurity
+public class WebfluxFormSecurityConfiguration {
+
+	@Bean
+	public MapReactiveUserDetailsService userDetailsService() {
+		// @formatter:off
+		UserDetails user = User.withDefaultPasswordEncoder()
+			.username("user")
+			.password("password")
+			.roles("USER")
+			.build();
+		// @formatter:on
+		return new MapReactiveUserDetailsService(user);
+	}
+
+	@Bean
+	SecurityWebFilterChain springSecurityFilterChain(ServerHttpSecurity http) {
+		// @formatter:off
+		http
+			.authorizeExchange((exchanges) -> exchanges
+				.pathMatchers("/login").permitAll()
+				.anyExchange().authenticated()
+			)
+			.httpBasic(withDefaults())
+			.formLogin((form) -> form
+				.loginPage("/login")
+			);
+		// @formatter:on
+		return http.build();
+	}
+
+}

reactive/webflux/java/authentication/username-password/form/src/main/resources/logback.xml

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+<configuration>
+	<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+	<encoder>
+		<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
+	</encoder>
+	</appender>
+
+	<root level="WARN">
+		<appender-ref ref="STDOUT" />
+	</root>
+
+</configuration>

reactive/webflux/java/authentication/username-password/form/src/main/resources/templates/index.html

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+<!DOCTYPE html>
+<html>
+
+<head>
+	<title>Secured</title>
+	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
+</head>
+<body>
+<div class="container">
+	<h1>Secured</h1>
+
+	<form th:action="@{/logout}" method="post">
+		<input id="logout" type="submit" value="Log Out"/>
+	</form>
+</div>
+</body>
+</html>

reactive/webflux/java/authentication/username-password/form/src/main/resources/templates/login.html

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+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<meta charset="utf-8">
+	<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+	<meta name="description" content="">
+	<meta name="author" content="">
+	<title>Please Log In</title>
+	<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-/Y6pD6FV/Vv2HJnA6t+vslU6fwYXjCFtcEpHbNJ0lyAFsXTsjBbfaDjzALeQsN6M" crossorigin="anonymous">
+	<link href="https://getbootstrap.com/docs/4.0/examples/signin/signin.css" rel="stylesheet" crossorigin="anonymous"/>
+</head>
+<body>
+<div class="container">
+	<form class="form-signin" method="post" th:action="@{/login}">
+		<h2 class="form-signin-heading">Please Log In</h2>
+		<div th:if="${param.error}" class="alert alert-danger" role="alert">Invalid
+			username and password.</div>
+		<div th:if="${param.logout}" class="alert alert-success" role="alert">You
+			have been logged out.</div>
+		<p>
+			<label for="username" class="sr-only">Username</label>
+			<input type="text" id="username" name="username" class="form-control" placeholder="Username" required autofocus>
+		</p>
+		<p>
+			<label for="password" class="sr-only">Password</label>
+			<input type="password" id="password" name="password" class="form-control" placeholder="Password" required>
+		</p>
+		<button class="btn btn-lg btn-primary btn-block" type="submit">Sign in</button>
+	</form>
+</div>
+</body>
+</html>