[jira] [Created] (FLINK-10385) Implement a waitUntilCondition utils

["陈梓立 (JIRA)" <ji...@apache.org>]

陈梓立 created FLINK-10385:
---------------------------

             Summary: Implement a waitUntilCondition utils
                 Key: FLINK-10385
                 URL: https://issues.apache.org/jira/browse/FLINK-10385
             Project: Flink
          Issue Type: Improvement
          Components: Tests
    Affects Versions: 1.7.0
            Reporter: 陈梓立
             Fix For: 1.7.0


Recently when I refine some tests, I notice that it is a common requirement to wait until a (stable) condition occur.

To achieve this, we have {{ExecutionGraphTestUtils#waitUntilJobStatus}} and many. Most of them can simply abstract as
{code:java}
public static void waitUntilCondition(SupplierWithException<Boolean, Throwable> conditionSupplier, Deadline deadline) {
  while (deadline.hasTimeLeft()) {
    if (conditionSupplier.get()) { return; }
    Thread.sleep(Math.min(deadline.toMillis(), 500);
  }
  throws new IlleagalStateException("...");
}
{code}
 

I propose to implement such a method to avoid too many utils method scattered to achieve the same purpose.
 Looking forward to your advice. If there is previous code/project already implemented this, I am glad to introduce it.

cc [~Zentol]



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