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HttpServletMDC.java
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HttpServletMDC.java
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package org.logevents.optional.jakarta;
import org.logevents.config.MdcFilter;
import org.logevents.formatters.exceptions.ExceptionFormatter;
import org.logevents.mdc.DynamicMDC;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import java.util.Map;
import java.util.function.Supplier;
/**
* Populates MDC or JSON format according to <a href="https://www.elastic.co/guide/en/ecs/current/">Elastic
* Common Schema</a> guidelines:
*
* <ul>
* <li><strong>url.original:</strong> The URL as the user entered it</li>
* <li><strong>http.request.method:</strong> GET, PUT, POST, DELETE etc</li>
* <li><strong>user.name:</strong> {@link HttpServletRequest#getRemoteUser()}</li>
* <li><strong>client.address:</strong> {@link HttpServletRequest#getRemoteAddr()}</li>
* <li><strong>event.time:</strong> The number of seconds since the request started</li>
* <li>
* <strong>error.{class, message, stack_trace} (only JSON, not MDC)</strong>:
* The exception in <code>"javax.servlet.error.exception"</code> (if any)
* </li>
* <li><strong>http.response.status_code</strong>: {@link HttpServletResponse#getStatus()}</li>
* <li><strong>http.response.mime_type</strong>: {@link HttpServletResponse#getContentType()}</li>
* <li><strong>http.response.redirect</strong>: "Location" response header</li>
* </ul>
*/
public class HttpServletMDC implements DynamicMDC {
private final HttpServletRequest request;
private final HttpServletResponse response;
private final long duration;
public HttpServletMDC(HttpServletRequest request, HttpServletResponse response, long duration) {
this.request = request;
this.response = response;
this.duration = duration;
}
public static Supplier<DynamicMDC> supplier(HttpServletRequest request, HttpServletResponse response) {
long start = System.currentTimeMillis();
return () -> new HttpServletMDC(request, response, System.currentTimeMillis() - start);
}
@Override
public Iterable<? extends Map.Entry<String, String>> entrySet() {
Map<String, String> result = new java.util.LinkedHashMap<>();
HttpServletResponseMDC.addMdcVariables(result, response);
HttpServletRequestMDC.addMdcVariables(result, request);
result.put("event.time", String.format("%.04f", duration / 1000.0));
return result.entrySet();
}
@Override
public void populateJsonEvent(Map<String, Object> jsonPayload, MdcFilter mdcFilter, ExceptionFormatter exceptionFormatter) {
HttpServletResponseMDC.populateJson(jsonPayload, response);
HttpServletRequestMDC.populateJson(jsonPayload, exceptionFormatter, request);
jsonPayload.put("event.time", String.format("%.04f", duration / 1000.0));
}
}