ms/controllerblueprints/application/src/main/java/org/onap/ccsdk/cds/controllerblueprints/filters/ApplicationLoggingFilter.java

   1 /*
   2  *  Copyright © 2017-2018 AT&T Intellectual Property.
   3  *  Modifications Copyright © 2018 IBM.
   4  *
   5  *  Licensed under the Apache License, Version 2.0 (the "License");
   6  *  you may not use this file except in compliance with the License.
   7  *  You may obtain a copy of the License at
   8  *
   9  *      http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  *  Unless required by applicable law or agreed to in writing, software
  12  *  distributed under the License is distributed on an "AS IS" BASIS,
  13  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  *  See the License for the specific language governing permissions and
  15  *  limitations under the License.
  16  */
  17
  18 package org.onap.ccsdk.cds.controllerblueprints.filters;
  19
  20 import com.google.common.base.Preconditions;
  21 import org.apache.commons.lang3.StringUtils;
  22 import org.onap.ccsdk.cds.controllerblueprints.core.BluePrintConstants;
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25 import org.slf4j.MDC;
  26 import org.springframework.beans.factory.annotation.Value;
  27 import org.springframework.context.annotation.Configuration;
  28 import org.springframework.http.HttpHeaders;
  29 import org.springframework.http.server.reactive.ServerHttpRequest;
  30 import org.springframework.http.server.reactive.ServerHttpResponse;
  31 import org.springframework.web.server.ServerWebExchange;
  32 import org.springframework.web.server.WebFilter;
  33 import org.springframework.web.server.WebFilterChain;
  34 import reactor.core.publisher.Mono;
  35
  36 import java.time.ZoneOffset;
  37 import java.time.ZonedDateTime;
  38 import java.time.format.DateTimeFormatter;
  39 import java.util.UUID;
  40
  41 /**
  42  * ApplicationLoggingFilter
  43  *
  44  * @author Brinda Santh 8/14/2018
  45  */
  46 @Configuration
  47 @SuppressWarnings("unused")
  48 public class ApplicationLoggingFilter implements WebFilter {
  49     private static Logger log = LoggerFactory.getLogger(ApplicationLoggingFilter.class);
  50
  51     @SuppressWarnings("unused")
  52     @Value("${appVersion}")
  53     private String appVersion;
  54
  55     @Override
  56     public Mono<Void> filter(ServerWebExchange serverWebExchange, WebFilterChain webFilterChain) {
  57         try {
  58
  59             ServerHttpRequest request = serverWebExchange.getRequest();
  60             ServerHttpResponse response = serverWebExchange.getResponse();
  61
  62             String[] tokens = StringUtils.split(appVersion, '.');
  63             Preconditions.checkNotNull(tokens, "failed to split application versions");
  64             Preconditions.checkArgument(tokens.length == 3, "failed to tokenize application versions");
  65             HttpHeaders header = response.getHeaders();
  66
  67             String requestID = defaultToUUID(request.getHeaders().getFirst("X-ONAP-RequestID"));
  68             String invocationID = defaultToUUID(request.getHeaders().getFirst("X-ONAP-InvocationID"));
  69             String partnerName = defaultToEmpty(request.getHeaders().getFirst("X-ONAP-PartnerName"));
  70             MDC.put("InvokeTimestamp", ZonedDateTime.now(ZoneOffset.UTC).format(DateTimeFormatter.ISO_INSTANT));
  71             MDC.put("RequestID", requestID);
  72             MDC.put("InvocationID", invocationID);
  73             MDC.put("PartnerName", partnerName);
  74             MDC.put("ClientIPAddress", defaultToEmpty(request.getRemoteAddress().getAddress()));
  75             MDC.put("ServerFQDN", defaultToEmpty(request.getRemoteAddress().getHostString()));
  76
  77             header.add(BluePrintConstants.RESPONSE_HEADER_TRANSACTION_ID, requestID);
  78             header.add(BluePrintConstants.RESPONSE_HEADER_MINOR_VERSION, tokens[1]);
  79             header.add(BluePrintConstants.RESPONSE_HEADER_PATCH_VERSION, tokens[2]);
  80             header.add(BluePrintConstants.RESPONSE_HEADER_LATEST_VERSION, appVersion);
  81         } catch (Exception e) {
  82             e.printStackTrace();
  83         }
  84
  85         return webFilterChain.filter(serverWebExchange);
  86
  87     }
  88
  89     private static String defaultToUUID(String in) {
  90         return in == null ? UUID.randomUUID().toString() : in;
  91     }
  92
  93     private static String defaultToEmpty(Object in) {
  94         return in == null ? "" : in.toString();
  95     }
  96
  97
  98 }