Mark Observations with CSRF Failures

Closes gh-11993

web/src/main/java/org/springframework/security/web/access/CompositeAccessDeniedHandler.java

@@ -0,0 +1,50 @@
+/*
+ * Copyright 2002-2022 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 org.springframework.security.web.access;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+
+import jakarta.servlet.ServletException;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+
+import org.springframework.security.access.AccessDeniedException;
+
+public final class CompositeAccessDeniedHandler implements AccessDeniedHandler {
+
+	private Collection<AccessDeniedHandler> handlers;
+
+	public CompositeAccessDeniedHandler(AccessDeniedHandler... handlers) {
+		this(Arrays.asList(handlers));
+	}
+
+	public CompositeAccessDeniedHandler(Collection<AccessDeniedHandler> handlers) {
+		this.handlers = new ArrayList<>(handlers);
+	}
+
+	@Override
+	public void handle(HttpServletRequest request, HttpServletResponse response,
+			AccessDeniedException accessDeniedException) throws IOException, ServletException {
+		for (AccessDeniedHandler handler : this.handlers) {
+			handler.handle(request, response, accessDeniedException);
+		}
+	}
+
+}

web/src/main/java/org/springframework/security/web/access/ObservationMarkingAccessDeniedHandler.java

@@ -0,0 +1,46 @@
+/*
+ * Copyright 2002-2022 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 org.springframework.security.web.access;
+
+import java.io.IOException;
+
+import io.micrometer.observation.Observation;
+import io.micrometer.observation.ObservationRegistry;
+import jakarta.servlet.ServletException;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+
+import org.springframework.security.access.AccessDeniedException;
+
+public final class ObservationMarkingAccessDeniedHandler implements AccessDeniedHandler {
+
+	private final ObservationRegistry registry;
+
+	public ObservationMarkingAccessDeniedHandler(ObservationRegistry registry) {
+		this.registry = registry;
+	}
+
+	@Override
+	public void handle(HttpServletRequest request, HttpServletResponse response, AccessDeniedException exception)
+			throws IOException, ServletException {
+		Observation observation = this.registry.getCurrentObservation();
+		if (observation != null) {
+			observation.error(exception);
+		}
+	}
+
+}