feat:support traffic mirroring.

spring-cloud-tencent-plugin-starters/spring-cloud-starter-tencent-traffic-mirroring-plugin/src/main/java/com/tencent/cloud/plugin/trafficmirroring/TrafficMirroringPostPlugin.java

@@ -22,8 +22,9 @@ import java.net.http.HttpClient;
 import java.net.http.HttpResponse;
 import java.time.Duration;
 import java.util.Optional;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
 
 import com.tencent.cloud.common.metadata.MetadataContextHolder;
 import com.tencent.cloud.plugin.trafficmirroring.config.TrafficMirroringProperties;
@@ -35,6 +36,7 @@ import com.tencent.polaris.api.plugin.route.RouterConstants;
 import com.tencent.polaris.api.utils.ClassUtils;
 import com.tencent.polaris.api.utils.StringUtils;
 import com.tencent.polaris.client.pojo.Node;
+import com.tencent.polaris.client.util.NamedThreadFactory;
 import com.tencent.polaris.metadata.core.MetadataObjectValue;
 import com.tencent.polaris.metadata.core.MetadataType;
 import feign.Request;
@@ -57,18 +59,12 @@ public class TrafficMirroringPostPlugin implements EnhancedPlugin {
 
 	private final TrafficMirroringProperties trafficMirroringProperties;
 
-	private final ExecutorService executorService;
+	private ThreadPoolExecutor threadPoolExecutor;
 
-	private final HttpClient httpClient;
+	private HttpClient httpClient;
 
 	public TrafficMirroringPostPlugin(TrafficMirroringProperties trafficMirroringProperties) {
 		this.trafficMirroringProperties = trafficMirroringProperties;
-		this.executorService = Executors.newFixedThreadPool(trafficMirroringProperties.getRequestPoolSize());
-		// create JDK HttpClient instance.
-		this.httpClient = HttpClient.newBuilder()
-				.connectTimeout(Duration.ofMillis(trafficMirroringProperties.getRequestConnectionTimeout()))
-				.executor(executorService)
-				.build();
 	}
 
 	@Override
@@ -116,17 +112,38 @@ public class TrafficMirroringPostPlugin implements EnhancedPlugin {
 			return;
 		}
 
+		initIfNeeded();
+
 		byte[] body = context.getOriginBody();
-		// async send mirroring request.
-		String finalDestination = destination;
-		executorService.submit(() -> {
-			try {
-				sendMirroringRequest(originalRequest, body, finalDestination);
-			}
-			catch (Exception e) {
-				LOG.warn("Traffic mirroring request failed.", e);
+		// send mirroring request.
+		try {
+			sendMirroringRequest(originalRequest, body, destination);
+		}
+		catch (Exception e) {
+			LOG.warn("Traffic mirroring request failed.", e);
+		}
+	}
+
+	private void initIfNeeded() {
+		if (threadPoolExecutor == null) {
+			// create thread pool executor.
+			int cpuCores = Runtime.getRuntime().availableProcessors();
+			int corePoolSize = cpuCores;
+			int maxPoolSize = trafficMirroringProperties.getRequestPoolSize();
+			if (cpuCores > trafficMirroringProperties.getRequestPoolSize()) {
+				corePoolSize = trafficMirroringProperties.getRequestPoolSize();
 			}
-		});
+			this.threadPoolExecutor = new ThreadPoolExecutor(corePoolSize, maxPoolSize,
+					60, TimeUnit.SECONDS, new LinkedBlockingQueue<>(), new NamedThreadFactory("polaris-traffic-mirroring"));
+
+		}
+		if (httpClient == null) {
+			// create JDK HttpClient instance.
+			this.httpClient = HttpClient.newBuilder()
+					.connectTimeout(Duration.ofMillis(trafficMirroringProperties.getRequestConnectionTimeout()))
+					.executor(threadPoolExecutor)
+					.build();
+		}
 	}
 
 	private void setHeaders(java.net.http.HttpRequest.Builder requestBuilder, Object originalRequest) {

spring-cloud-tencent-plugin-starters/spring-cloud-starter-tencent-traffic-mirroring-plugin/src/main/java/com/tencent/cloud/plugin/trafficmirroring/config/TrafficMirroringProperties.java

@@ -33,9 +33,9 @@ public class TrafficMirroringProperties {
 	private boolean enabled = true;
 
 	/**
-	 * Traffic mirroring request pool size. Default is 4.
+	 * Traffic mirroring request pool size. Default is 100.
 	 */
-	private int requestPoolSize = 4;
+	private int requestPoolSize = 100;
 
 	/**
 	 * Traffic mirroring request connection timeout in millisecond. Default is 5000.