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/*
 * Copyright (c) 2020-2030, Shuigedeng ([email protected] & https://blog.taotaocloud.top/).
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.taotao.cloud.openfeign.annotation;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * feign 重试注解
 *
 * {@snippet :
 * 	 @GetMapping
 *   @FeignRetry(maxAttempt= 3, backoff = @Backoff(delay = 500L))
 *   ResponseEntity  retrieve1();
 *
 *   @GetMapping
 *   @FeignRetry(maxAttempt= 6, backoff = @Backoff(delay = 500L, maxDelay = 20000L, multiplier = 4))
 *   ResponseEntity  retrieve2();
 * }
 *
 * @author shuigedeng
 * @version 2023.07
 * @since 2023-07-06 09:21:20
 */
@Target({ElementType.METHOD, ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
public @interface FeignRetry {

    Backoff backoff() default @Backoff();

    int maxAttempt() default 3;

    Class[] include() default {};

    @Target(ElementType.TYPE)
    @Retention(RetentionPolicy.RUNTIME)
    public static @interface Backoff {

        long delay() default 1000L;

        long maxDelay() default 0L;

        double multiplier() default 0.0D;
    }
}