add AbstractClientEngine

hutool-http/src/main/java/org/dromara/hutool/http/client/engine/AbstractClientEngine.java

@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2024. looly(loolly@aliyun.com)
+ * Hutool is licensed under Mulan PSL v2.
+ * You can use this software according to the terms and conditions of the Mulan PSL v2.
+ * You may obtain a copy of Mulan PSL v2 at:
+ *          https://license.coscl.org.cn/MulanPSL2
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PSL v2 for more details.
+ */
+
+package org.dromara.hutool.http.client.engine;
+
+import org.dromara.hutool.http.client.ClientConfig;
+
+/**
+ * 客户端引擎抽象类，用于保存配置和定义初始化，并提供：
+ * <ul>
+ *     <li>{@link #reset()}用于重置客户端</li>
+ *     <li>{@link #initEngine()}初始化客户端</li>
+ * </ul>
+ *
+ * @author Looly
+ * @since 6.0.0
+ */
+public abstract class AbstractClientEngine implements ClientEngine{
+
+	protected ClientConfig config;
+
+	@Override
+	public ClientEngine init(final ClientConfig config) {
+		this.config = config;
+		reset();
+		return this;
+	}
+
+	/**
+	 * 重置引擎
+	 */
+	protected abstract void reset();
+
+	/**
+	 * 初始化引擎，实现逻辑中如果初始化完成，不再重新初始化
+	 */
+	protected abstract void initEngine();
+}