Add AuthenticationFailureHandler

Fixes gh-4533

webflux/src/main/java/org/springframework/security/web/server/authentication/AuthenticationEntryPointFailureHandler.java

@@ -0,0 +1,45 @@
+/*
+ *
+ *  * Copyright 2002-2017 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
+ *  *
+ *  *      http://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 org.springframework.security.web.server.authentication;
+
+import org.springframework.security.core.AuthenticationException;
+import org.springframework.security.web.server.AuthenticationEntryPoint;
+import org.springframework.security.web.server.WebFilterExchange;
+import org.springframework.util.Assert;
+import reactor.core.publisher.Mono;
+
+/**
+ * @author Rob Winch
+ * @since 5.0
+ */
+public class AuthenticationEntryPointFailureHandler implements AuthenticationFailureHandler {
+	private final AuthenticationEntryPoint authenticationEntryPoint;
+
+	public AuthenticationEntryPointFailureHandler(
+		AuthenticationEntryPoint authenticationEntryPoint) {
+		Assert.notNull(authenticationEntryPoint, "authenticationEntryPoint cannot be null");
+		this.authenticationEntryPoint = authenticationEntryPoint;
+	}
+
+	@Override
+	public Mono<Void> onAuthenticationFailure(WebFilterExchange webFilterExchange,
+		AuthenticationException exception) {
+		return this.authenticationEntryPoint.commence(webFilterExchange.getExchange(), exception);
+	}
+}

webflux/src/main/java/org/springframework/security/web/server/authentication/AuthenticationFailureHandler.java

@@ -0,0 +1,33 @@
+/*
+ *
+ *  * Copyright 2002-2017 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
+ *  *
+ *  *      http://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 org.springframework.security.web.server.authentication;
+
+import org.springframework.security.core.AuthenticationException;
+import reactor.core.publisher.Mono;
+
+import org.springframework.security.core.Authentication;
+import org.springframework.security.web.server.WebFilterExchange;
+
+/**
+ * @author Rob Winch
+ * @since 5.0
+ */
+public interface AuthenticationFailureHandler {
+	Mono<Void> onAuthenticationFailure(WebFilterExchange webFilterExchange, AuthenticationException exception);
+}

webflux/src/test/java/org/springframework/security/web/server/authentication/AuthenticationEntryPointFailureHandlerTests.java

@@ -0,0 +1,70 @@
+/*
+ *
+ *  * Copyright 2002-2017 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
+ *  *
+ *  *      http://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 org.springframework.security.web.server.authentication;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.runners.MockitoJUnitRunner;
+import reactor.core.publisher.Mono;
+
+import org.springframework.security.authentication.BadCredentialsException;
+import org.springframework.security.web.server.AuthenticationEntryPoint;
+import org.springframework.security.web.server.WebFilterExchange;
+import org.springframework.web.server.ServerWebExchange;
+import org.springframework.web.server.WebFilterChain;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.Mockito.when;
+
+/**
+ * @author Rob Winch
+ * @since 5.0
+ */
+@RunWith(MockitoJUnitRunner.class)
+public class AuthenticationEntryPointFailureHandlerTests {
+	@Mock
+	private AuthenticationEntryPoint authenticationEntryPoint;
+	@Mock
+	private ServerWebExchange exchange;
+	@Mock
+	private WebFilterChain chain;
+
+	@InjectMocks
+	private WebFilterExchange filterExchange;
+
+	@InjectMocks
+	private AuthenticationEntryPointFailureHandler handler;
+
+	@Test(expected = IllegalArgumentException.class)
+	public void constructorWhenNullEntryPointThenException() {
+		this.authenticationEntryPoint = null;
+		new AuthenticationEntryPointFailureHandler(this.authenticationEntryPoint);
+	}
+
+	@Test
+	public void onAuthenticationFailureWhenInvokedThenDelegatesToEntryPoint() {
+		Mono<Void> result = Mono.empty();
+		BadCredentialsException e = new BadCredentialsException("Failed");
+		when(this.authenticationEntryPoint.commence(this.exchange, e)).thenReturn(result);
+
+		assertThat(this.handler.onAuthenticationFailure(this.filterExchange, e)).isEqualTo(result);
+	}
+}