Java 重试小工具Retry

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已于 2022-06-30 11:41:03 修改

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分类专栏： java 文章标签： java 开发语言

于 2022-06-24 16:25:46 首次发布

本文链接：https://blog.youkuaiyun.com/java821643/article/details/125447276

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该工具只是对Guava中Retryer拙劣的模仿。意在学习其Java8使用方式，代码解耦精髓。

package com.fast.cattsoft.util;

import java.util.concurrent.ExecutionException;

public interface RetryResult<V> {

    boolean hasResult();

    boolean hasException();

    V getResult() throws IllegalAccessException;

    V get() throws ExecutionException;

    Throwable getException();

    int getRetryCount();


}

package com.fast.cattsoft.util;

public class SuccessRetryResult<R> implements RetryResult<R> {
    private R result;
    private int tryCount;
    private long intervaTime;

    public SuccessRetryResult(R result, int tryCount, long intervaTime) {
        this.result = result;
        this.tryCount = tryCount;
        this.intervaTime = intervaTime;
    }


    @Override
    public boolean hasResult() {
        return true;
    }

    @Override
    public boolean hasException() {
        return false;
    }

    @Override
    public R getResult() {
        return result;
    }

    @Override
    public R get() {
        return result;
    }

    @Override
    public Throwable getException() {
        return null;
    }

    @Override
    public int getRetryCount() {
        return 0;
    }
}

package com.fast.cattsoft.util;

import java.util.concurrent.ExecutionException;

public class ExceptionRetryResult<R> implements RetryResult<R> {
    private ExecutionException e;
    private int tryCount;
    private long intervaTime;

    ExceptionRetryResult(ExecutionException e, int tryCount, long intervaTime) {
        this.e = e;
        this.tryCount = tryCount;
        this.intervaTime = intervaTime;
    }

    @Override
    public boolean hasResult() {
        return false;
    }

    @Overr

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