Move configuration of TraceEndpoint

See gh-10263

spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/trace/TraceEndpointProperties.java

@@ -0,0 +1,52 @@
+/*
+ * Copyright 2012-2017 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.boot.actuate.autoconfigure.trace;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import org.springframework.boot.actuate.trace.Include;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+
+/**
+ * Configuration properties for tracing.
+ *
+ * @author Wallace Wadge
+ * @author Phillip Webb
+ * @author Venil Noronha
+ * @author Madhura Bhave
+ * @author Stephane Nicoll
+ * @since 1.3.0
+ */
+@ConfigurationProperties(prefix = "management.trace")
+public class TraceEndpointProperties {
+
+	/**
+	 * Items to be included in the trace. Defaults to request/response headers (including
+	 * cookies) and errors.
+	 */
+	private Set<Include> include = new HashSet<>(Include.defaultIncludes());
+
+	public Set<Include> getInclude() {
+		return this.include;
+	}
+
+	public void setInclude(Set<Include> include) {
+		this.include = include;
+	}
+
+}

spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/trace/TraceWebFilterAutoConfiguration.java

@@ -19,9 +19,7 @@ package org.springframework.boot.actuate.autoconfigure.trace;
 import javax.servlet.Servlet;
 import javax.servlet.ServletRegistration;
 
-import org.springframework.beans.factory.BeanFactory;
 import org.springframework.beans.factory.ObjectProvider;
-import org.springframework.boot.actuate.trace.TraceProperties;
 import org.springframework.boot.actuate.trace.TraceRepository;
 import org.springframework.boot.actuate.trace.WebRequestTraceFilter;
 import org.springframework.boot.autoconfigure.AutoConfigureAfter;
@@ -46,28 +44,28 @@ import org.springframework.web.servlet.DispatcherServlet;
 @ConditionalOnClass({ Servlet.class, DispatcherServlet.class, ServletRegistration.class })
 @AutoConfigureAfter(TraceRepositoryAutoConfiguration.class)
 @ConditionalOnProperty(prefix = "management.trace.filter", name = "enabled", matchIfMissing = true)
-@EnableConfigurationProperties(TraceProperties.class)
+@EnableConfigurationProperties(TraceEndpointProperties.class)
 public class TraceWebFilterAutoConfiguration {
 
 	private final TraceRepository traceRepository;
 
-	private final TraceProperties traceProperties;
+	private final TraceEndpointProperties endpointProperties;
 
 	private final ErrorAttributes errorAttributes;
 
 	public TraceWebFilterAutoConfiguration(TraceRepository traceRepository,
-			TraceProperties traceProperties,
+			TraceEndpointProperties endpointProperties,
 			ObjectProvider<ErrorAttributes> errorAttributes) {
 		this.traceRepository = traceRepository;
-		this.traceProperties = traceProperties;
+		this.endpointProperties = endpointProperties;
 		this.errorAttributes = errorAttributes.getIfAvailable();
 	}
 
 	@Bean
 	@ConditionalOnMissingBean
-	public WebRequestTraceFilter webRequestLoggingFilter(BeanFactory beanFactory) {
+	public WebRequestTraceFilter webRequestLoggingFilter() {
 		WebRequestTraceFilter filter = new WebRequestTraceFilter(this.traceRepository,
-				this.traceProperties);
+				this.endpointProperties.getInclude());
 		if (this.errorAttributes != null) {
 			filter.setErrorAttributes(this.errorAttributes);
 		}

spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/trace/TraceWebFilterAutoConfigurationTests.java

@@ -21,7 +21,6 @@ import java.util.Map;
 import org.junit.After;
 import org.junit.Test;
 
-import org.springframework.boot.actuate.trace.TraceProperties;
 import org.springframework.boot.actuate.trace.TraceRepository;
 import org.springframework.boot.actuate.trace.WebRequestTraceFilter;
 import org.springframework.boot.autoconfigure.context.PropertyPlaceholderAutoConfiguration;
@@ -91,7 +90,7 @@ public class TraceWebFilterAutoConfigurationTests {
 
 		@Bean
 		public TestWebRequestTraceFilter testWebRequestTraceFilter(
-				TraceRepository repository, TraceProperties properties) {
+				TraceRepository repository, TraceEndpointProperties properties) {
 			return new TestWebRequestTraceFilter(repository, properties);
 		}
 
@@ -100,8 +99,8 @@ public class TraceWebFilterAutoConfigurationTests {
 	static class TestWebRequestTraceFilter extends WebRequestTraceFilter {
 
 		TestWebRequestTraceFilter(TraceRepository repository,
-				TraceProperties properties) {
-			super(repository, properties);
+				TraceEndpointProperties properties) {
+			super(repository, properties.getInclude());
 		}
 
 		@Override

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/trace/Include.java

@@ -0,0 +1,131 @@
+/*
+ * Copyright 2012-2017 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.boot.actuate.trace;
+
+import java.util.Collections;
+import java.util.LinkedHashSet;
+import java.util.Set;
+
+/**
+ * Include options for tracing.
+ *
+ * @author Wallace Wadge
+ * @since 2.0.0
+ */
+public enum Include {
+
+	/**
+	 * Include request headers.
+	 */
+	REQUEST_HEADERS,
+
+	/**
+	 * Include response headers.
+	 */
+	RESPONSE_HEADERS,
+
+	/**
+	 * Include "Cookie" in request and "Set-Cookie" in response headers.
+	 */
+	COOKIES,
+
+	/**
+	 * Include authorization header (if any).
+	 */
+	AUTHORIZATION_HEADER,
+
+	/**
+	 * Include errors (if any).
+	 */
+	ERRORS,
+
+	/**
+	 * Include path info.
+	 */
+	PATH_INFO,
+
+	/**
+	 * Include the translated path.
+	 */
+	PATH_TRANSLATED,
+
+	/**
+	 * Include the context path.
+	 */
+	CONTEXT_PATH,
+
+	/**
+	 * Include the user principal.
+	 */
+	USER_PRINCIPAL,
+
+	/**
+	 * Include the parameters.
+	 */
+	PARAMETERS,
+
+	/**
+	 * Include the query string.
+	 */
+	QUERY_STRING,
+
+	/**
+	 * Include the authentication type.
+	 */
+	AUTH_TYPE,
+
+	/**
+	 * Include the remote address.
+	 */
+	REMOTE_ADDRESS,
+
+	/**
+	 * Include the session ID.
+	 */
+	SESSION_ID,
+
+	/**
+	 * Include the remote user.
+	 */
+	REMOTE_USER,
+
+	/**
+	 * Include the time taken to service the request in milliseconds.
+	 */
+	TIME_TAKEN;
+
+	private static final Set<Include> DEFAULT_INCLUDES;
+
+	static {
+		Set<Include> defaultIncludes = new LinkedHashSet<>();
+		defaultIncludes.add(Include.REQUEST_HEADERS);
+		defaultIncludes.add(Include.RESPONSE_HEADERS);
+		defaultIncludes.add(Include.COOKIES);
+		defaultIncludes.add(Include.ERRORS);
+		defaultIncludes.add(Include.TIME_TAKEN);
+		DEFAULT_INCLUDES = Collections.unmodifiableSet(defaultIncludes);
+	}
+
+	/**
+	 * Return the default {@link Include}.
+	 * @return the default include.
+	 */
+	public static Set<Include> defaultIncludes() {
+		return DEFAULT_INCLUDES;
+	}
+
+}

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/trace/TraceProperties.java

@@ -1,151 +0,0 @@
-/*
- * Copyright 2012-2017 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.boot.actuate.trace;
-
-import java.util.Collections;
-import java.util.HashSet;
-import java.util.LinkedHashSet;
-import java.util.Set;
-
-import org.springframework.boot.context.properties.ConfigurationProperties;
-
-/**
- * Configuration properties for tracing.
- *
- * @author Wallace Wadge
- * @author Phillip Webb
- * @author Venil Noronha
- * @author Madhura Bhave
- * @since 1.3.0
- */
-@ConfigurationProperties(prefix = "management.trace")
-public class TraceProperties {
-
-	private static final Set<Include> DEFAULT_INCLUDES;
-
-	static {
-		Set<Include> defaultIncludes = new LinkedHashSet<>();
-		defaultIncludes.add(Include.REQUEST_HEADERS);
-		defaultIncludes.add(Include.RESPONSE_HEADERS);
-		defaultIncludes.add(Include.COOKIES);
-		defaultIncludes.add(Include.ERRORS);
-		defaultIncludes.add(Include.TIME_TAKEN);
-		DEFAULT_INCLUDES = Collections.unmodifiableSet(defaultIncludes);
-	}
-
-	/**
-	 * Items to be included in the trace. Defaults to request/response headers (including
-	 * cookies) and errors.
-	 */
-	private Set<Include> include = new HashSet<>(DEFAULT_INCLUDES);
-
-	public Set<Include> getInclude() {
-		return this.include;
-	}
-
-	public void setInclude(Set<Include> include) {
-		this.include = include;
-	}
-
-	/**
-	 * Include options for tracing.
-	 */
-	public enum Include {
-
-		/**
-		 * Include request headers.
-		 */
-		REQUEST_HEADERS,
-
-		/**
-		 * Include response headers.
-		 */
-		RESPONSE_HEADERS,
-
-		/**
-		 * Include "Cookie" in request and "Set-Cookie" in response headers.
-		 */
-		COOKIES,
-
-		/**
-		 * Include authorization header (if any).
-		 */
-		AUTHORIZATION_HEADER,
-
-		/**
-		 * Include errors (if any).
-		 */
-		ERRORS,
-
-		/**
-		 * Include path info.
-		 */
-		PATH_INFO,
-
-		/**
-		 * Include the translated path.
-		 */
-		PATH_TRANSLATED,
-
-		/**
-		 * Include the context path.
-		 */
-		CONTEXT_PATH,
-
-		/**
-		 * Include the user principal.
-		 */
-		USER_PRINCIPAL,
-
-		/**
-		 * Include the parameters.
-		 */
-		PARAMETERS,
-
-		/**
-		 * Include the query string.
-		 */
-		QUERY_STRING,
-
-		/**
-		 * Include the authentication type.
-		 */
-		AUTH_TYPE,
-
-		/**
-		 * Include the remote address.
-		 */
-		REMOTE_ADDRESS,
-
-		/**
-		 * Include the session ID.
-		 */
-		SESSION_ID,
-
-		/**
-		 * Include the remote user.
-		 */
-		REMOTE_USER,
-
-		/**
-		 * Include the time taken to service the request in milliseconds.
-		 */
-		TIME_TAKEN
-
-	}
-
-}

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/trace/WebRequestTraceFilter.java

@@ -38,7 +38,6 @@ import javax.servlet.http.HttpSession;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 
-import org.springframework.boot.actuate.trace.TraceProperties.Include;
 import org.springframework.boot.web.servlet.error.ErrorAttributes;
 import org.springframework.core.Ordered;
 import org.springframework.http.HttpStatus;
@@ -68,16 +67,26 @@ public class WebRequestTraceFilter extends OncePerRequestFilter implements Order
 
 	private ErrorAttributes errorAttributes;
 
-	private final TraceProperties properties;
+	private final Set<Include> includes;
 
 	/**
 	 * Create a new {@link WebRequestTraceFilter} instance.
 	 * @param repository the trace repository
-	 * @param properties the trace properties
+	 * @param includes the {@link Include} to apply
 	 */
-	public WebRequestTraceFilter(TraceRepository repository, TraceProperties properties) {
+	public WebRequestTraceFilter(TraceRepository repository, Set<Include> includes) {
 		this.repository = repository;
-		this.properties = properties;
+		this.includes = includes;
+	}
+
+	/**
+	 * Create a new {@link WebRequestTraceFilter} instance with the default
+	 * {@link Include} to apply.
+	 * @param repository the trace repository
+	 * @see Include#defaultIncludes()
+	 */
+	public WebRequestTraceFilter(TraceRepository repository) {
+		this(repository, Include.defaultIncludes());
 	}
 
 	/**
@@ -247,7 +256,7 @@ public class WebRequestTraceFilter extends OncePerRequestFilter implements Order
 	}
 
 	private boolean isIncluded(Include include) {
-		return this.properties.getInclude().contains(include);
+		return this.includes.contains(include);
 	}
 
 	public void setErrorAttributes(ErrorAttributes errorAttributes) {

spring-boot-actuator/src/test/java/org/springframework/boot/actuate/trace/WebRequestTraceFilterTests.java

@@ -28,7 +28,6 @@ import javax.servlet.ServletException;
 
 import org.junit.Test;
 
-import org.springframework.boot.actuate.trace.TraceProperties.Include;
 import org.springframework.boot.web.servlet.error.DefaultErrorAttributes;
 import org.springframework.mock.web.MockFilterChain;
 import org.springframework.mock.web.MockHttpServletRequest;
@@ -55,17 +54,13 @@ public class WebRequestTraceFilterTests {
 
 	private final InMemoryTraceRepository repository = new InMemoryTraceRepository();
 
-	private TraceProperties properties = new TraceProperties();
-
-	private WebRequestTraceFilter filter = new WebRequestTraceFilter(this.repository,
-			this.properties);
-
 	@Test
 	@SuppressWarnings("unchecked")
 	public void filterAddsTraceWithDefaultIncludes() {
+		WebRequestTraceFilter filter = new WebRequestTraceFilter(this.repository);
 		MockHttpServletRequest request = spy(new MockHttpServletRequest("GET", "/foo"));
 		request.addHeader("Accept", "application/json");
-		Map<String, Object> trace = this.filter.getTrace(request);
+		Map<String, Object> trace = filter.getTrace(request);
 		assertThat(trace.get("method")).isEqualTo("GET");
 		assertThat(trace.get("path")).isEqualTo("/foo");
 		Map<String, Object> map = (Map<String, Object>) trace.get("headers");
@@ -76,7 +71,8 @@ public class WebRequestTraceFilterTests {
 	@Test
 	@SuppressWarnings({ "rawtypes", "unchecked" })
 	public void filterAddsTraceWithCustomIncludes() throws IOException, ServletException {
-		this.properties.setInclude(EnumSet.allOf(Include.class));
+		WebRequestTraceFilter filter = new WebRequestTraceFilter(this.repository,
+				EnumSet.allOf(Include.class));
 		MockHttpServletRequest request = new MockHttpServletRequest("GET", "/foo");
 		request.addHeader("Accept", "application/json");
 		request.addHeader("Cookie", "testCookie=testValue;");
@@ -95,7 +91,7 @@ public class WebRequestTraceFilterTests {
 		MockHttpServletResponse response = new MockHttpServletResponse();
 		response.addHeader("Content-Type", "application/json");
 		response.addHeader("Set-Cookie", "a=b");
-		this.filter.doFilterInternal(request, response, (req, resp) -> {
+		filter.doFilterInternal(request, response, (req, resp) -> {
 			BufferedReader bufferedReader = req.getReader();
 			while (bufferedReader.readLine() != null) {
 				// read the contents as normal (forces cache to fill up)
@@ -126,11 +122,12 @@ public class WebRequestTraceFilterTests {
 	@SuppressWarnings({ "unchecked" })
 	public void filterDoesNotAddResponseHeadersWithoutResponseHeadersInclude()
 			throws ServletException, IOException {
-		this.properties.setInclude(Collections.singleton(Include.REQUEST_HEADERS));
+		WebRequestTraceFilter filter = new WebRequestTraceFilter(this.repository,
+				Collections.singleton(Include.REQUEST_HEADERS));
 		MockHttpServletRequest request = new MockHttpServletRequest("GET", "/foo");
 		MockHttpServletResponse response = new MockHttpServletResponse();
 		response.addHeader("Content-Type", "application/json");
-		this.filter.doFilterInternal(request, response, (req, resp) -> {
+		filter.doFilterInternal(request, response, (req, resp) -> {
 		});
 		Map<String, Object> info = this.repository.findAll().iterator().next().getInfo();
 		Map<String, Object> headers = (Map<String, Object>) info.get("headers");
@@ -141,11 +138,12 @@ public class WebRequestTraceFilterTests {
 	@SuppressWarnings({ "unchecked" })
 	public void filterDoesNotAddRequestCookiesWithCookiesExclude()
 			throws ServletException, IOException {
-		this.properties.setInclude(Collections.singleton(Include.REQUEST_HEADERS));
+		WebRequestTraceFilter filter = new WebRequestTraceFilter(this.repository,
+				Collections.singleton(Include.REQUEST_HEADERS));
 		MockHttpServletRequest request = spy(new MockHttpServletRequest("GET", "/foo"));
 		request.addHeader("Accept", "application/json");
 		request.addHeader("Cookie", "testCookie=testValue;");
-		Map<String, Object> map = (Map<String, Object>) this.filter.getTrace(request)
+		Map<String, Object> map = (Map<String, Object>) filter.getTrace(request)
 				.get("headers");
 		assertThat(map.get("request").toString()).isEqualTo("{Accept=application/json}");
 	}
@@ -154,10 +152,11 @@ public class WebRequestTraceFilterTests {
 	@SuppressWarnings({ "unchecked" })
 	public void filterDoesNotAddAuthorizationHeaderWithoutAuthorizationHeaderInclude()
 			throws ServletException, IOException {
+		WebRequestTraceFilter filter = new WebRequestTraceFilter(this.repository);
 		MockHttpServletRequest request = new MockHttpServletRequest("GET", "/foo");
 		request.addHeader("Authorization", "my-auth-header");
 		MockHttpServletResponse response = new MockHttpServletResponse();
-		this.filter.doFilterInternal(request, response, (req, resp) -> {
+		filter.doFilterInternal(request, response, (req, resp) -> {
 		});
 		Map<String, Object> info = this.repository.findAll().iterator().next().getInfo();
 		Map<String, Object> headers = (Map<String, Object>) info.get("headers");
@@ -168,12 +167,12 @@ public class WebRequestTraceFilterTests {
 	@SuppressWarnings({ "unchecked" })
 	public void filterAddsAuthorizationHeaderWhenAuthorizationHeaderIncluded()
 			throws ServletException, IOException {
-		this.properties.setInclude(
+		WebRequestTraceFilter filter = new WebRequestTraceFilter(this.repository,
 				EnumSet.of(Include.REQUEST_HEADERS, Include.AUTHORIZATION_HEADER));
 		MockHttpServletRequest request = new MockHttpServletRequest("GET", "/foo");
 		request.addHeader("Authorization", "my-auth-header");
 		MockHttpServletResponse response = new MockHttpServletResponse();
-		this.filter.doFilterInternal(request, response, (req, resp) -> {
+		filter.doFilterInternal(request, response, (req, resp) -> {
 		});
 		Map<String, Object> info = this.repository.findAll().iterator().next().getInfo();
 		Map<String, Object> headers = (Map<String, Object>) info.get("headers");
@@ -185,13 +184,14 @@ public class WebRequestTraceFilterTests {
 	@SuppressWarnings({ "unchecked" })
 	public void filterDoesNotAddResponseCookiesWithCookiesExclude()
 			throws ServletException, IOException {
-		this.properties.setInclude(Collections.singleton(Include.RESPONSE_HEADERS));
+		WebRequestTraceFilter filter = new WebRequestTraceFilter(this.repository,
+				Collections.singleton(Include.RESPONSE_HEADERS));
 		MockHttpServletRequest request = new MockHttpServletRequest("GET", "/foo");
 		MockHttpServletResponse response = new MockHttpServletResponse();
 		response.addHeader("Content-Type", "application/json");
 		response.addHeader("Set-Cookie", "testCookie=testValue;");
-		Map<String, Object> trace = this.filter.getTrace(request);
-		this.filter.enhanceTrace(trace, response);
+		Map<String, Object> trace = filter.getTrace(request);
+		filter.enhanceTrace(trace, response);
 		Map<String, Object> map = (Map<String, Object>) trace.get("headers");
 		assertThat(map.get("response").toString())
 				.isEqualTo("{Content-Type=application/json, status=200}");
@@ -199,12 +199,13 @@ public class WebRequestTraceFilterTests {
 
 	@Test
 	public void filterHasResponseStatus() {
+		WebRequestTraceFilter filter = new WebRequestTraceFilter(this.repository);
 		MockHttpServletRequest request = new MockHttpServletRequest("GET", "/foo");
 		MockHttpServletResponse response = new MockHttpServletResponse();
 		response.setStatus(404);
 		response.addHeader("Content-Type", "application/json");
-		Map<String, Object> trace = this.filter.getTrace(request);
-		this.filter.enhanceTrace(trace, response);
+		Map<String, Object> trace = filter.getTrace(request);
+		filter.enhanceTrace(trace, response);
 		@SuppressWarnings("unchecked")
 		Map<String, Object> map = (Map<String, Object>) ((Map<String, Object>) trace
 				.get("headers")).get("response");
@@ -213,10 +214,11 @@ public class WebRequestTraceFilterTests {
 
 	@Test
 	public void filterAddsTimeTaken() throws Exception {
+		WebRequestTraceFilter filter = new WebRequestTraceFilter(this.repository);
 		MockHttpServletRequest request = spy(new MockHttpServletRequest("GET", "/foo"));
 		MockHttpServletResponse response = new MockHttpServletResponse();
 		MockFilterChain chain = new MockFilterChain();
-		this.filter.doFilter(request, response, chain);
+		filter.doFilter(request, response, chain);
 		String timeTaken = (String) this.repository.findAll().iterator().next().getInfo()
 				.get("timeTaken");
 		assertThat(timeTaken).isNotNull();
@@ -224,15 +226,16 @@ public class WebRequestTraceFilterTests {
 
 	@Test
 	public void filterHasError() {
-		this.filter.setErrorAttributes(new DefaultErrorAttributes());
+		WebRequestTraceFilter filter = new WebRequestTraceFilter(this.repository);
+		filter.setErrorAttributes(new DefaultErrorAttributes());
 		MockHttpServletRequest request = new MockHttpServletRequest("GET", "/foo");
 		MockHttpServletResponse response = new MockHttpServletResponse();
 		response.setStatus(500);
 		request.setAttribute("javax.servlet.error.exception",
 				new IllegalStateException("Foo"));
 		response.addHeader("Content-Type", "application/json");
-		Map<String, Object> trace = this.filter.getTrace(request);
-		this.filter.enhanceTrace(trace, response);
+		Map<String, Object> trace = filter.getTrace(request);
+		filter.enhanceTrace(trace, response);
 		@SuppressWarnings("unchecked")
 		Map<String, Object> map = (Map<String, Object>) trace.get("error");
 		System.err.println(map);
@@ -243,11 +246,12 @@ public class WebRequestTraceFilterTests {
 	@SuppressWarnings("unchecked")
 	public void filterHas500ResponseStatusWhenExceptionIsThrown()
 			throws ServletException, IOException {
+		WebRequestTraceFilter filter = new WebRequestTraceFilter(this.repository);
 		MockHttpServletRequest request = new MockHttpServletRequest("GET", "/foo");
 		MockHttpServletResponse response = new MockHttpServletResponse();
 
 		try {
-			this.filter.doFilterInternal(request, response, (req, resp) -> {
+			filter.doFilterInternal(request, response, (req, resp) -> {
 				throw new RuntimeException();
 			});
 			fail("Exception was swallowed");
@@ -264,7 +268,7 @@ public class WebRequestTraceFilterTests {
 	@Test
 	@SuppressWarnings("unchecked")
 	public void postProcessRequestHeaders() throws Exception {
-		this.filter = new WebRequestTraceFilter(this.repository, this.properties) {
+		WebRequestTraceFilter filter = new WebRequestTraceFilter(this.repository) {
 
 			@Override
 			protected void postProcessRequestHeaders(Map<String, Object> headers) {
@@ -275,7 +279,7 @@ public class WebRequestTraceFilterTests {
 		MockHttpServletRequest request = spy(new MockHttpServletRequest("GET", "/foo"));
 		request.addHeader("Accept", "application/json");
 		request.addHeader("Test", "spring");
-		Map<String, Object> map = (Map<String, Object>) this.filter.getTrace(request)
+		Map<String, Object> map = (Map<String, Object>) filter.getTrace(request)
 				.get("headers");
 		assertThat(map.get("request").toString()).isEqualTo("{Accept=application/json}");
 	}