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/*-
* ============LICENSE_START=======================================================
* ONAP - SO
* ================================================================================
* Copyright (C) 2017 - 2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.so.logging.jaxrs.filter;
import org.onap.logging.ref.slf4j.ONAPLogConstants;
import org.onap.so.logger.LogConstants;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.MDC;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpRequest;
import org.springframework.http.client.ClientHttpRequestExecution;
import org.springframework.http.client.ClientHttpRequestInterceptor;
import org.springframework.http.client.ClientHttpResponse;
import org.springframework.util.StreamUtils;
import java.io.IOException;
import java.nio.charset.Charset;
import java.time.ZoneOffset;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
import java.util.List;
import java.util.UUID;
import javax.ws.rs.core.Response;
public class SpringClientFilter implements ClientHttpRequestInterceptor {
private final Logger log = LoggerFactory.getLogger(this.getClass());
private static final String TRACE = "trace-#";
private static final String SO = "SO";
@Override
public ClientHttpResponse intercept(HttpRequest request, byte[] body, ClientHttpRequestExecution execution) throws IOException {
processRequest(request, body);
ClientHttpResponse response = execution.execute(request, body);
processResponse(response);
return response;
}
private void processRequest(HttpRequest request, byte[] body) throws IOException {
setInvocationId();
setupHeaders(request);
setupMDC(request);
if (log.isDebugEnabled()) {
log.debug("===========================request begin================================================");
log.debug("URI : {}", request.getURI());
log.debug("Method : {}", request.getMethod());
log.debug("Headers : {}", request.getHeaders());
log.debug("Request body: {}", new String(body, "UTF-8"));
log.debug("==========================request end================================================");
}
}
private void setupHeaders(HttpRequest clientRequest) {
HttpHeaders headers = clientRequest.getHeaders();
headers.add(ONAPLogConstants.Headers.REQUEST_ID, extractRequestID(clientRequest));
headers.add(ONAPLogConstants.Headers.INVOCATION_ID, MDC.get(ONAPLogConstants.MDCs.INVOCATION_ID));
headers.add(ONAPLogConstants.Headers.PARTNER_NAME, SO);
}
private String extractRequestID(HttpRequest clientRequest) {
String requestId = MDC.get(ONAPLogConstants.MDCs.REQUEST_ID);
if(requestId == null || requestId.isEmpty() || requestId.equals(TRACE)){
requestId = UUID.randomUUID().toString();
log.warn("Could not Find Request ID Generating New One: {}",clientRequest.getURI());
}
return requestId;
}
private void setupMDC(HttpRequest clientRequest) {
MDC.put(ONAPLogConstants.MDCs.INVOKE_TIMESTAMP, ZonedDateTime.now(ZoneOffset.UTC).format(DateTimeFormatter.ISO_INSTANT));
MDC.put(ONAPLogConstants.MDCs.TARGET_SERVICE_NAME, clientRequest.getURI().toString());
MDC.put(ONAPLogConstants.MDCs.RESPONSE_STATUS_CODE, ONAPLogConstants.ResponseStatus.INPROGRESS.toString());
MDC.put(ONAPLogConstants.MDCs.TARGET_ENTITY,extractTargetEntity(clientRequest));
}
private String extractTargetEntity(HttpRequest clientRequest) {
HttpHeaders headers = clientRequest.getHeaders();
String headerTargetEntity = null;
List<String> headerTargetEntityList = headers.get(LogConstants.TARGET_ENTITY_HEADER);
if(headerTargetEntityList!= null && !headerTargetEntityList.isEmpty())
headerTargetEntity = headerTargetEntityList.get(0);
String targetEntity = MDC.get(ONAPLogConstants.MDCs.TARGET_ENTITY);
if(targetEntity != null &&
!targetEntity.isEmpty() ){
return targetEntity;
}else if(headerTargetEntity != null &&
!headerTargetEntity.isEmpty()){
targetEntity = headerTargetEntity;
}else{
targetEntity = LogConstants.UNKNOWN_TARGET_ENTITY;
log.warn("Could not Target Entity: {}",clientRequest.getURI());
}
return targetEntity;
}
private void setInvocationId() {
String invocationId = MDC.get(ONAPLogConstants.MDCs.INVOCATION_ID);
if(invocationId == null || invocationId.isEmpty())
invocationId =UUID.randomUUID().toString();
MDC.put(ONAPLogConstants.MDCs.INVOCATION_ID, invocationId);
}
private void processResponse(ClientHttpResponse response) throws IOException {
if (log.isDebugEnabled()) {
log.debug("============================response begin==========================================");
log.debug("Status code : {}", response.getStatusCode());
log.debug("Status text : {}", response.getStatusText());
log.debug("Headers : {}", response.getHeaders());
log.debug("Response body: {}", StreamUtils.copyToString(response.getBody(), Charset.defaultCharset()));
log.debug("=======================response end=================================================");
}
String statusCode;
if(Response.Status.Family.familyOf(response.getRawStatusCode()).equals(Response.Status.Family.SUCCESSFUL)){
statusCode=ONAPLogConstants.ResponseStatus.COMPLETED.toString();
}else{
statusCode=ONAPLogConstants.ResponseStatus.ERROR.toString();
}
MDC.put(ONAPLogConstants.MDCs.RESPONSE_CODE, String.valueOf(response.getRawStatusCode()));
MDC.put(ONAPLogConstants.MDCs.RESPONSE_DESCRIPTION,"");
MDC.put(ONAPLogConstants.MDCs.RESPONSE_STATUS_CODE, statusCode);
log.info(ONAPLogConstants.Markers.INVOKE_RETURN, "InvokeReturn");
clearClientMDCs();
}
private void clearClientMDCs() {
MDC.remove(ONAPLogConstants.MDCs.INVOCATION_ID);
MDC.remove(ONAPLogConstants.MDCs.RESPONSE_DESCRIPTION);
MDC.remove(ONAPLogConstants.MDCs.RESPONSE_STATUS_CODE);
MDC.remove(ONAPLogConstants.MDCs.RESPONSE_DESCRIPTION);
MDC.remove(ONAPLogConstants.MDCs.RESPONSE_CODE);
MDC.remove(ONAPLogConstants.MDCs.TARGET_ENTITY);
MDC.remove(ONAPLogConstants.MDCs.PARTNER_NAME);
MDC.remove(ONAPLogConstants.MDCs.TARGET_SERVICE_NAME);
MDC.remove(ONAPLogConstants.MDCs.INVOKE_TIMESTAMP);
}
}
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