add limit rate filter debug log.

CHANGELOG.md

@@ -1,4 +1,5 @@
 # Change Log
 ---
 
-- [Bugfix: optimize ratelimit actuator](https://github.com/Tencent/spring-cloud-tencent/pull/419)
+- [Bugfix: optimize ratelimit actuator](https://github.com/Tencent/spring-cloud-tencent/pull/419)
+- [Feature: add rate limit filter debug log](https://github.com/Tencent/spring-cloud-tencent/pull/436)

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

@@ -110,7 +110,7 @@ public class QuotaCheckServletFilter extends OncePerRequestFilter {
 			}
 			// Unirate
 			if (quotaResponse.getCode() == QuotaResultCode.QuotaResultOk && quotaResponse.getWaitMs() > 0) {
-				LOG.debug("Unirate sleep for {}ms.", quotaResponse.getWaitMs());
+				LOG.debug("The request of [{}] will waiting for {}ms.", request.getRequestURI(), quotaResponse.getWaitMs());
 				Thread.sleep(quotaResponse.getWaitMs());
 			}
 
@@ -150,8 +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();