fix: send unit header in gw. (#1758)

Author: shedfreewu

CHANGELOG.md

@@ -8,3 +8,4 @@
 - [fix:replace with string inside @ConditionalOnClass.](https://github.com/Tencent/spring-cloud-tencent/pull/1750)
 - [feat: support TagUtils, ContextToHeaderInterceptor in TSF.](https://github.com/Tencent/spring-cloud-tencent/pull/1754)
 - [deps:upgrade to spring boot 3.4.12.](https://github.com/Tencent/spring-cloud-tencent/pull/1756)
+- [fix: send unit header in tsf gw.](https://github.com/Tencent/spring-cloud-tencent/pull/1758)

spring-cloud-tencent-plugin-starters/spring-cloud-tencent-unit-plugin/src/main/java/com/tencent/cloud/plugin/unit/config/GatewayUnitAutoConfiguration.java

@@ -18,6 +18,7 @@
 package com.tencent.cloud.plugin.unit.config;
 
 import com.tencent.cloud.common.tsf.ConditionalOnOnlyTsfConsulEnabled;
+import com.tencent.cloud.plugin.unit.plugin.UnitScgEnhancedPlugin;
 import com.tencent.tsf.unit.core.GatewayUnitArchCallback;
 import com.tencent.tsf.unit.core.TencentUnitManager;
 import com.tencent.tsf.unit.core.TsfZoneFilterUnitCallback;
@@ -26,6 +27,7 @@
 
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
 
@@ -44,6 +46,11 @@ static class GatewayUnitEnable {
 		private String applicationName;
 
 
+		@Bean
+		public UnitScgEnhancedPlugin unitScgEnhancedPlugin() {
+			return new UnitScgEnhancedPlugin();
+		}
+
 		@PostConstruct
 		public void init() {
 			TencentUnitManager.addArchCallback(new GatewayUnitArchCallback(applicationName));

spring-cloud-tencent-plugin-starters/spring-cloud-tencent-unit-plugin/src/main/java/com/tencent/cloud/plugin/unit/plugin/UnitScgEnhancedPlugin.java

@@ -27,6 +27,7 @@
 import com.tencent.cloud.rpc.enhancement.plugin.EnhancedPluginType;
 import com.tencent.cloud.rpc.enhancement.plugin.PluginOrderConstant;
 import com.tencent.tsf.unit.core.TencentUnitContext;
+import com.tencent.tsf.unit.core.TencentUnitManager;
 import shade.polaris.com.google.common.collect.ImmutableMap;
 
 import org.springframework.http.server.reactive.ServerHttpRequest;
@@ -50,6 +51,10 @@ public void run(EnhancedPluginContext context) throws Throwable {
 			return;
 		}
 
+		if (!TencentUnitManager.isEnable()) {
+			return;
+		}
+
 		// get request builder
 		ServerHttpRequest.Builder builder = exchange.getRequest().mutate();