File content as of revision 45:2aa9f933c8d2:

/*
 * Copyright (c) 2017 Baidu, Inc. All Rights Reserved.
 * 
 * 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
 * 
 *   http://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.baidu.duer.dcs.http.intercepter;

import java.io.IOException;

import okhttp3.Interceptor;
import okhttp3.Request;
import okhttp3.Response;

/**
 * 重试拦截器
 * <p>
 * Created by guxiuzhong@baidu.com on 2017/5/20.
 */
public class RetryInterceptor implements Interceptor {
    // 最大重试次数，假如设置为3次重试的话，则最大可能请求4次（默认1次+3次重试）
    private int maxRetry;
    private int retryNum = 0;

    public RetryInterceptor(int maxRetry) {
        this.maxRetry = maxRetry;
    }

    @Override
    public Response intercept(Chain chain) throws IOException {
        Request request = chain.request();
        Response response = chain.proceed(request);
        while (!response.isSuccessful() && retryNum < maxRetry) {
            retryNum++;
            response = chain.proceed(request);
        }
        return response;
    }
}