add limit rate filter debug log. (#437)

Co-authored-by: 许路路 <499319126@qq.com>

CHANGELOG.md

@@ -2,3 +2,4 @@
 ---
 
 - [Bugfix: optimize ratelimit actuator](https://github.com/Tencent/spring-cloud-tencent/pull/420)
+- [Feature: add rate limit filter debug log](https://github.com/Tencent/spring-cloud-tencent/pull/437)

spring-cloud-starter-tencent-polaris-ratelimit/src/main/java/com/tencent/cloud/polaris/ratelimit/filter/QuotaCheckReactiveFilter.java

@@ -114,6 +114,7 @@ public class QuotaCheckReactiveFilter implements WebFilter, Ordered {
 			}
 			// Unirate
 			if (quotaResponse.getCode() == QuotaResultCode.QuotaResultOk && quotaResponse.getWaitMs() > 0) {
+				LOG.debug("The request of [{}] will waiting for {}ms.", path, quotaResponse.getWaitMs());
 				return Mono.delay(Duration.ofMillis(quotaResponse.getWaitMs())).flatMap(e -> chain.filter(exchange));
 			}
 		}

spring-cloud-starter-tencent-polaris-ratelimit/src/main/java/com/tencent/cloud/polaris/ratelimit/filter/QuotaCheckServletFilter.java

@@ -58,11 +58,13 @@ import static com.tencent.cloud.polaris.ratelimit.constant.RateLimitConstant.LAB
 @Order(RateLimitConstant.FILTER_ORDER)
 public class QuotaCheckServletFilter extends OncePerRequestFilter {
 
+	private static final Logger LOG = LoggerFactory.getLogger(QuotaCheckServletFilter.class);
+
 	/**
-	 * Default Filter Registration Bean Name Defined.
+	 * Default Filter Registration Bean Name Defined .
 	 */
 	public static final String QUOTA_FILTER_BEAN_NAME = "quotaFilterRegistrationBean";
-	private static final Logger LOG = LoggerFactory.getLogger(QuotaCheckServletFilter.class);
+
 	private final LimitAPI limitAPI;
 
 	private final PolarisRateLimiterLabelServletResolver labelResolver;
@@ -97,8 +99,8 @@ public class QuotaCheckServletFilter extends OncePerRequestFilter {
 		Map<String, String> labels = getRequestLabels(request, localNamespace, localService);
 
 		try {
-			QuotaResponse quotaResponse = QuotaCheckUtils.getQuota(
-					limitAPI, localNamespace, localService, 1, labels, request.getRequestURI());
+			QuotaResponse quotaResponse = QuotaCheckUtils.getQuota(limitAPI,
+					localNamespace, localService, 1, labels, request.getRequestURI());
 
 			if (quotaResponse.getCode() == QuotaResultCode.QuotaResultLimited) {
 				response.setStatus(polarisRateLimitProperties.getRejectHttpCode());
@@ -108,6 +110,7 @@ public class QuotaCheckServletFilter extends OncePerRequestFilter {
 			}
 			// Unirate
 			if (quotaResponse.getCode() == QuotaResultCode.QuotaResultOk && quotaResponse.getWaitMs() > 0) {
+				LOG.debug("The request of [{}] will waiting for {}ms.", request.getRequestURI(), quotaResponse.getWaitMs());
 				Thread.sleep(quotaResponse.getWaitMs());
 			}
 
@@ -147,8 +150,7 @@ public class QuotaCheckServletFilter extends OncePerRequestFilter {
 				return labelResolver.resolve(request);
 			}
 			catch (Throwable e) {
-				LOG.error("resolve custom label failed. resolver = {}",
-						labelResolver.getClass().getName(), e);
+				LOG.error("resolve custom label failed. resolver = {}", labelResolver.getClass().getName(), e);
 			}
 		}
 		return Collections.emptyMap();