001package ca.uhn.fhir.rest.client.interceptor;
002
003/*
004 * #%L
005 * HAPI FHIR - Core Library
006 * %%
007 * Copyright (C) 2014 - 2016 University Health Network
008 * %%
009 * Licensed under the Apache License, Version 2.0 (the "License");
010 * you may not use this file except in compliance with the License.
011 * You may obtain a copy of the License at
012 * 
013 *      http://www.apache.org/licenses/LICENSE-2.0
014 * 
015 * Unless required by applicable law or agreed to in writing, software
016 * distributed under the License is distributed on an "AS IS" BASIS,
017 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
018 * See the License for the specific language governing permissions and
019 * limitations under the License.
020 * #L%
021 */
022
023import java.io.IOException;
024
025import org.apache.http.HttpResponse;
026import org.apache.http.client.methods.HttpRequestBase;
027
028import ca.uhn.fhir.rest.client.IClientInterceptor;
029
030/**
031 * HTTP interceptor to be used for adding HTTP headers containing user identifying info for auditing purposes to the request
032 */
033public class UserInfoInterceptor implements IClientInterceptor {
034        
035        public static final String HEADER_USER_ID = "fhir-user-id";
036        public static final String HEADER_USER_NAME = "fhir-user-name"; 
037        public static final String HEADER_APPLICATION_NAME = "fhir-app-name";
038        
039        private String myUserId;
040        private String myUserName;              
041        private String myAppName;
042        
043    public UserInfoInterceptor(String theUserId, String theUserName, String theAppName) {
044                super();
045                myUserId = theUserId;
046                myUserName = theUserName;               
047                myAppName = theAppName;
048        }
049
050        @Override
051        public void interceptRequest(HttpRequestBase theRequest) {
052                if(myUserId != null) theRequest.addHeader(HEADER_USER_ID, myUserId);
053                if(myUserName != null) theRequest.addHeader(HEADER_USER_NAME, myUserName);              
054                if(myAppName != null) theRequest.addHeader(HEADER_APPLICATION_NAME, myAppName);
055        }
056
057        @Override
058        public void interceptResponse(HttpResponse theResponse) throws IOException {
059                // nothing
060        }
061
062        
063
064}