2 * ============LICENSE_START======================================================================
3 * Copyright (C) 2018 NOKIA Intellectual Property, 2019 Nordix Foundation. All rights reserved.
4 * ===============================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
6 * in compliance with the License. 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 distributed under the License
11 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
12 * or implied. See the License for the specific language governing permissions and limitations under
14 * ============LICENSE_END========================================================================
17 package org.onap.dcaegen2.collectors.datafile.model.logging;
20 import java.util.UUID;
22 import org.apache.commons.lang3.StringUtils;
23 import org.apache.http.client.methods.HttpRequestBase;
24 import org.onap.dcaegen2.services.sdk.rest.services.model.logging.MdcVariables;
25 import org.slf4j.Logger;
26 import org.slf4j.LoggerFactory;
28 import org.slf4j.Marker;
29 import org.slf4j.MarkerFactory;
30 import org.springframework.http.HttpHeaders;
33 * Support functions for MDC.
35 public final class MappedDiagnosticContext {
37 public static final Marker ENTRY = MarkerFactory.getMarker("ENTRY");
38 public static final Marker EXIT = MarkerFactory.getMarker("EXIT");
39 private static final Marker INVOKE = MarkerFactory.getMarker("INVOKE");
41 private static final Logger logger = LoggerFactory.getLogger(MappedDiagnosticContext.class);
43 private MappedDiagnosticContext() {
47 * Inserts the relevant trace information in the HTTP header.
49 * @param httpRequest a request
51 public static void appendTraceInfo(HttpRequestBase httpRequest) {
52 String requestId = MDC.get(MdcVariables.REQUEST_ID);
53 httpRequest.addHeader(MdcVariables.X_ONAP_REQUEST_ID, requestId);
54 httpRequest.addHeader("X-RequestID", requestId); // deprecated
55 httpRequest.addHeader("X-TransactionID", requestId); // deprecated
57 String invocationId = UUID.randomUUID().toString();
58 httpRequest.addHeader(MdcVariables.X_INVOCATION_ID, invocationId);
59 logger.info(INVOKE, "Invoking request with invocation ID {}", invocationId);
63 * Initialize MDC from relevant information in a received HTTP header.
65 * @param headers a received HTPP header
67 public static void initializeTraceContext(HttpHeaders headers) {
68 String requestId = headers.getFirst(MdcVariables.X_ONAP_REQUEST_ID);
69 if (StringUtils.isBlank(requestId)) {
70 requestId = UUID.randomUUID().toString();
72 String invocationId = headers.getFirst(MdcVariables.X_INVOCATION_ID);
73 if (StringUtils.isBlank(invocationId)) {
74 invocationId = UUID.randomUUID().toString();
76 MDC.put(MdcVariables.REQUEST_ID, requestId);
77 MDC.put(MdcVariables.INVOCATION_ID, invocationId);
81 * Initialize the MDC when a new context is started.
83 * @return a copy of the new trace context
85 public static Map<String, String> initializeTraceContext() {
87 MDC.put(MdcVariables.REQUEST_ID, UUID.randomUUID().toString());
88 return MDC.getCopyOfContextMap();
92 * Updates the request ID in the current context.
94 * @param newRequestId the new value of the request ID
95 * @return a copy the updated context
97 public static Map<String, String> setRequestId(String newRequestId) {
98 Map<String, String> context = MDC.getCopyOfContextMap();
99 context.put(MdcVariables.REQUEST_ID, newRequestId);
100 MDC.setContextMap(context);