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我使用RetryExecutor来自:https://github.com/nurkiewicz/async-retryRetryExecutor:如何等待所有任务完成?
下面ID我的代码:
ScheduledExecutorService executorService = Executors.newScheduledThreadPool(10);
RetryExecutor retryExecutor = new AsyncRetryExecutor(executorService)
.retryOn(IOException.class)
.withExponentialBackoff(500, 2)
.withMaxDelay(5_000) // 5 seconds
.withUniformJitter()
.withMaxRetries(5);
我已经提交了几个任务retryExecutor。
retryExecutor.getWithRetry(ctx -> {
if(ctx.getRetryCount()==0)
System.out.println("Starting download from : " + url);
else
System.out.println("Retrying ("+ctx.getRetryCount()+") dowload from : "+url);
return downloadFile(url);
}
).whenComplete((result, error) -> {
if(result!=null && result){
System.out.println("Successfully downloaded!");
}else{
System.out.println("Download failed. Error : "+error);
}
});
现在,我该如何等待所有提交的任务完成? 我想等到所有重试完成(如果有)。
不认为它会像executorService.shutdown()那样简单;
请添加解释你的答案:我如何写一个很好的答案(https://stackoverflow.com/help/how-to-answer) –