2 * Copyright © 2016-2018 European Support Limited
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 package org.openecomp.sdc.logging.servlet.spring;
19 import static org.openecomp.sdc.logging.api.StatusCode.COMPLETE;
20 import static org.openecomp.sdc.logging.api.StatusCode.ERROR;
22 import java.util.Objects;
23 import javax.servlet.http.HttpServletRequest;
24 import javax.servlet.http.HttpServletResponse;
25 import org.openecomp.sdc.logging.api.Logger;
26 import org.openecomp.sdc.logging.api.LoggerFactory;
27 import org.openecomp.sdc.logging.api.StatusCode;
28 import org.openecomp.sdc.logging.servlet.CombinedTracker;
29 import org.openecomp.sdc.logging.servlet.HttpHeader;
30 import org.openecomp.sdc.logging.servlet.RequestProcessingResult;
31 import org.openecomp.sdc.logging.servlet.Tracker;
32 import org.springframework.http.HttpStatus;
33 import org.springframework.web.method.HandlerMethod;
34 import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
37 * <p>IMPORTANT: For this interceptor to work, all exceptions must be properly handled before being returned to a
38 * client. Any unexpected, automatically handled exception bypasses the interceptor and will not be logged.</p>
39 * <p>The interceptor must be either registered in Spring configuration XML as a bean, or programmatically as described
40 * in <a href="https://docs.spring.io/spring/docs/current/spring-framework-reference/web.html#mvc-config-interceptors">
41 * Spring MVC Config: Interceptors</a>.</p>
46 public class LoggingInterceptor extends HandlerInterceptorAdapter {
48 static final String LOGGING_TRACKER_KEY = "onap.logging.tracker";
50 private static final Logger LOGGER = LoggerFactory.getLogger(LoggingInterceptor.class);
52 private final HttpHeader partnerNameHeader;
53 private final HttpHeader requestIdHeader;
55 public LoggingInterceptor(HttpHeader partnerNameHeader, HttpHeader requestIdHeader) {
56 this.partnerNameHeader = Objects.requireNonNull(partnerNameHeader);
57 this.requestIdHeader = Objects.requireNonNull(requestIdHeader);
61 public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) {
62 Class<?> resourceClass = getResourceType(handler);
63 Tracker tracker = new CombinedTracker(resourceClass, partnerNameHeader, requestIdHeader);
64 request.setAttribute(LOGGING_TRACKER_KEY, tracker);
65 tracker.preRequest(request);
70 public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler,
73 Tracker tracker = (Tracker) request.getAttribute(LOGGING_TRACKER_KEY);
75 if (tracker == null) {
76 LOGGER.debug("No logging tracker received");
80 tracker.postRequest(new ServletResponseResult(response.getStatus()));
83 private Class<?> getResourceType(Object handler) {
85 if (handler instanceof HandlerMethod) {
86 return ((HandlerMethod) handler).getMethod().getDeclaringClass();
89 return LoggingInterceptor.class;
92 static class ServletResponseResult implements RequestProcessingResult {
94 private final HttpStatus status;
96 ServletResponseResult(int status) {
97 this.status = HttpStatus.valueOf(status);
101 public int getStatus() {
102 return status.value();
106 public StatusCode getStatusCode() {
107 return status.is2xxSuccessful() || status.is3xxRedirection() ? COMPLETE : ERROR;
111 public String getStatusPhrase() {
112 return status.getReasonPhrase();