implement anySuccess/any(Complete) M* methods in CompletableFutureUtils/CffuFactory/Cffu

[oldratlee]

• CompletableFutureUtils
  • Factory Methods
    • mSupplyAnySuccessAsync/mSupplyAnyAsync
    • mRunAnySuccessAsync/mRunAnyAsync
  • Instance Methods
    • thenMApplyAnySuccessAsync/thenMApplyAnyAsync
    • thenMAcceptAnySuccessAsync/thenMAcceptAnyAsync
    • thenMRunAnySuccessAsync/thenMRunAnyAsync
• CffuFactory(Factory Methods)
  • mSupplyAnySuccessAsync/mSupplyAnyAsync
  • mRunAnySuccessAsync/mRunAnyAsync
• Cffu(Instance Methods)
  • thenMApplyAnySuccessAsync/thenMApplyAnyAsync
  • thenMAcceptAnySuccessAsync/thenMAcceptAnyAsync
  • thenMRunAnySuccessAsync/thenMRunAnyAsync

[oldratlee]

• implement successfulAsList method of Guava ListenableFuture #197

this feature introduced a new run strategy allSuccess.

---

当有结果（返回不是CF<Void>）时，6个执行策略一套：

1. allFastFail
2. allSuccess
3. mostSuccess
4. all(Complete)
5. anySuccess
6. any(Complete)

当无结果（返回是CF<Void>）时，4个执行策略一套：

1. allFastFail
2. all(Complete)
3. anySuccess
4. any(Complete)

---

mostSuccess对于不带回结果的方法，感觉是无意义的：

• 因为无结果返回所以并不能进一步确定哪些输入是成功的。
• 效果等同于：简单地超时等待且返回结果总是成功的。示意代码如下：

  mRunAsync(action1, action2, action3)
    .completeOnTimeout(null, 100, TimeUnit.MILLISECONDS)
    .exceptionally(ex -> null);

类似的，allSuccess对于不带回结果的方法，也是无意义的：

• 因为无结果返回所以并不能进一步确定哪些输入是成功的。
• 效果等同于：一直等待都运行且返回结果总是成功的。示意代码如下：

  mRunAsync(action1, action2, action3)
    .exceptionally(ex -> null);