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Posted to dev@kafka.apache.org by "Alexandre Garnier (Jira)" <ji...@apache.org> on 2022/07/23 07:43:00 UTC
[jira] [Created] (KAFKA-14099) No REST API request logs in Kafka connect
Alexandre Garnier created KAFKA-14099:
-----------------------------------------
Summary: No REST API request logs in Kafka connect
Key: KAFKA-14099
URL: https://issues.apache.org/jira/browse/KAFKA-14099
Project: Kafka
Issue Type: Bug
Components: KafkaConnect
Affects Versions: 3.2.0
Reporter: Alexandre Garnier
Prior to 2.2.1, when an REST API request was performed, there was a request log in the log file:
{code}
[2022-07-23 07:18:16,128] INFO 172.18.0.1 - - [23/Jul/2022:07:18:16 +0000] "GET /connectors HTTP/1.1" 200 2 "-" "curl/7.81.0" 66 (org.apache.kafka.connect.runtime.rest.RestServer:62)
{code}
With a bisect, I found the problem comes from [PR 6651|https://github.com/apache/kafka/pull/6651] to fix KAFKA-8304
From what I understand of the problem, the ContextHandlerCollection is added in the Server (https://github.com/dongjinleekr/kafka/blob/63a6130af30536d67fca5802005695a84c875b5e/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/rest/RestServer.java#L195) before handlers are really added in the ContextHandlerCollection (https://github.com/dongjinleekr/kafka/blob/63a6130af30536d67fca5802005695a84c875b5e/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/rest/RestServer.java#L296).
I don't know the impact on other handlers, but clearly it doesn't work for the RequestLogHandler
A solution I found for the logging issue is to set the RequestLog directly in the server without using an handlers:
{code}
diff --git i/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/rest/RestServer.java w/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/rest/RestServer.java
index ab18419efc..4d09cc0e6c 100644
--- i/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/rest/RestServer.java
+++ w/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/rest/RestServer.java
@@ -187,6 +187,11 @@ public class RestServer {
public void initializeServer() {
log.info("Initializing REST server");
+ Slf4jRequestLogWriter slf4jRequestLogWriter = new Slf4jRequestLogWriter();
+ slf4jRequestLogWriter.setLoggerName(RestServer.class.getCanonicalName());
+ CustomRequestLog requestLog = new CustomRequestLog(slf4jRequestLogWriter, CustomRequestLog.EXTENDED_NCSA_FORMAT + " %{ms}T");
+ jettyServer.setRequestLog(requestLog);
+
/* Needed for graceful shutdown as per `setStopTimeout` documentation */
StatisticsHandler statsHandler = new StatisticsHandler();
statsHandler.setHandler(handlers);
@@ -275,14 +280,7 @@ public class RestServer {
configureHttpResponsHeaderFilter(context);
}
- RequestLogHandler requestLogHandler = new RequestLogHandler();
- Slf4jRequestLogWriter slf4jRequestLogWriter = new Slf4jRequestLogWriter();
- slf4jRequestLogWriter.setLoggerName(RestServer.class.getCanonicalName());
- CustomRequestLog requestLog = new CustomRequestLog(slf4jRequestLogWriter, CustomRequestLog.EXTENDED_NCSA_FORMAT + " %{ms}T");
- requestLogHandler.setRequestLog(requestLog);
-
contextHandlers.add(new DefaultHandler());
- contextHandlers.add(requestLogHandler);
handlers.setHandlers(contextHandlers.toArray(new Handler[0]));
try {
{code}
Same issue raised on StackOverflow: https://stackoverflow.com/questions/67699702/no-rest-api-logs-in-kafka-connect
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