/**
* @param collector to perform aggregation / reduction operation on the results from active stage
* (e.g. to Collect into a List or String)
* @param fn Function that receives the results of all currently active tasks as input
* @return A new builder object that can be used to define the next stage in the dataflow
*/
@SuppressWarnings({"unchecked", "rawtypes"})
default <T, R> SimpleReactStream<R> allOf(final Collector collector, final Function<T, R> fn) {
CompletableFuture[] array = lastActiveArray(getLastActive());
CompletableFuture cf = CompletableFuture.allOf(array);
Function<Exception, T> f =
(Exception e) -> {
BlockingStreamHelper.capture(e, getErrorHandler());
return BlockingStreamHelper.block(
this, Collectors.toList(), new StreamWrapper(Stream.of(array), true));
};
CompletableFuture onFail = cf.exceptionally(f);
CompletableFuture onSuccess =
onFail.thenApplyAsync(
(result) -> {
return new StageWithResults(this.getTaskExecutor(), null, result)
.submit(
() ->
(R)
fn.apply(
BlockingStreamHelper.aggregateResults(
collector,
Stream.of(array).collect(Collectors.toList()),
getErrorHandler())));
},
getTaskExecutor());
return (SimpleReactStream<R>) withLastActive(new StreamWrapper(onSuccess, isEager()));
}
/**
* React to the completion of any of the events in the previous stage. Will not work reliably with
* Streams where filter has been applied in earlier stages. (As Filter completes the Stream for
* events that are filtered out, they potentially shortcircuit the completion of the stage).
*
* @param fn Function to apply when any of the previous events complete
* @return Next stage in the stream
*/
default <R> SimpleReactStream<R> anyOf(final Function<U, R> fn) {
CompletableFuture[] array = lastActiveArray(getLastActive());
CompletableFuture cf = CompletableFuture.anyOf(array);
CompletableFuture onSuccess = cf.thenApplyAsync(fn, getTaskExecutor());
return (SimpleReactStream<R>) withLastActive(new StreamWrapper(onSuccess, isEager()));
}
/**
* The returned {@link CompletableFuture} completes when all reads are complete for this request
* and the entire result has been accounted for on the client. While this method is named "all" it
* really refers to retrieving all remaining items in the set. For large result sets it is
* preferred to use {@link Iterator} or {@link Stream} options, as the results will be held in
* memory at once.
*/
public CompletableFuture<List<Result>> all() {
return readCompleted.thenApplyAsync(
it -> {
final List<Result> list = new ArrayList<>();
resultQueue.drainTo(list);
return list;
},
executor);
}
private static void test(ExecutorService executor) throws Throwable {
Thread.currentThread().setName("mainThread");
// ----------------------------------------------------------------
// supplyAsync tests
// ----------------------------------------------------------------
try {
CompletableFuture<String> cf = supplyAsync(() -> "a test string");
checkCompletedNormally(cf, cf.join());
cf = supplyAsync(() -> "a test string", commonPool());
checkCompletedNormally(cf, cf.join());
cf = supplyAsync(() -> "a test string", executor);
checkCompletedNormally(cf, cf.join());
cf =
supplyAsync(
() -> {
throw new RuntimeException();
});
checkCompletedExceptionally(cf);
cf =
supplyAsync(
() -> {
throw new RuntimeException();
},
commonPool());
checkCompletedExceptionally(cf);
cf =
supplyAsync(
() -> {
throw new RuntimeException();
},
executor);
checkCompletedExceptionally(cf);
} catch (Throwable t) {
unexpected(t);
}
// ----------------------------------------------------------------
// runAsync tests
// ----------------------------------------------------------------
try {
CompletableFuture<Void> cf = runAsync(() -> {});
checkCompletedNormally(cf, cf.join());
cf = runAsync(() -> {}, commonPool());
checkCompletedNormally(cf, cf.join());
cf = runAsync(() -> {}, executor);
checkCompletedNormally(cf, cf.join());
cf =
runAsync(
() -> {
throw new RuntimeException();
});
checkCompletedExceptionally(cf);
cf =
runAsync(
() -> {
throw new RuntimeException();
},
commonPool());
checkCompletedExceptionally(cf);
cf =
runAsync(
() -> {
throw new RuntimeException();
},
executor);
checkCompletedExceptionally(cf);
} catch (Throwable t) {
unexpected(t);
}
// ----------------------------------------------------------------
// explicit completion
// ----------------------------------------------------------------
try {
final Phaser phaser = new Phaser(1);
final int phase = phaser.getPhase();
CompletableFuture<Integer> cf;
cf =
supplyAsync(
() -> {
phaser.awaitAdvance(phase);
return 1;
});
cf.complete(2);
phaser.arrive();
checkCompletedNormally(cf, 2);
cf =
supplyAsync(
() -> {
phaser.awaitAdvance(phase + 1);
return 1;
});
cf.completeExceptionally(new Throwable());
phaser.arrive();
checkCompletedExceptionally(cf);
cf =
supplyAsync(
() -> {
phaser.awaitAdvance(phase + 2);
return 1;
});
cf.cancel(true);
phaser.arrive();
checkCompletedExceptionally(cf, true);
cf =
supplyAsync(
() -> {
phaser.awaitAdvance(phase + 3);
return 1;
});
check(cf.getNow(2) == 2);
phaser.arrive();
checkCompletedNormally(cf, 1);
check(cf.getNow(2) == 1);
} catch (Throwable t) {
unexpected(t);
}
// ----------------------------------------------------------------
// thenApplyXXX tests
// ----------------------------------------------------------------
try {
CompletableFuture<Integer> cf2;
CompletableFuture<String> cf1 = supplyAsync(() -> "a test string");
cf2 =
cf1.thenApply(
(x) -> {
if (x.equals("a test string")) return 1;
else return 0;
});
checkCompletedNormally(cf1, "a test string");
checkCompletedNormally(cf2, 1);
cf1 = supplyAsync(() -> "a test string");
cf2 =
cf1.thenApplyAsync(
(x) -> {
if (x.equals("a test string")) return 1;
else return 0;
});
checkCompletedNormally(cf1, "a test string");
checkCompletedNormally(cf2, 1);
cf1 = supplyAsync(() -> "a test string");
cf2 =
cf1.thenApplyAsync(
(x) -> {
if (x.equals("a test string")) return 1;
else return 0;
},
executor);
checkCompletedNormally(cf1, "a test string");
checkCompletedNormally(cf2, 1);
cf1 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf2 =
cf1.thenApply(
(x) -> {
return 0;
});
checkCompletedExceptionally(cf1);
checkCompletedExceptionally(cf2);
cf1 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf2 =
cf1.thenApplyAsync(
(x) -> {
return 0;
});
checkCompletedExceptionally(cf1);
checkCompletedExceptionally(cf2);
cf1 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf2 =
cf1.thenApplyAsync(
(x) -> {
return 0;
},
executor);
checkCompletedExceptionally(cf1);
checkCompletedExceptionally(cf2);
} catch (Throwable t) {
unexpected(t);
}
// ----------------------------------------------------------------
// thenAcceptXXX tests
// ----------------------------------------------------------------
try {
CompletableFuture<Void> cf2;
int before = atomicInt.get();
CompletableFuture<String> cf1 = supplyAsync(() -> "a test string");
cf2 =
cf1.thenAccept(
(x) -> {
if (x.equals("a test string")) {
atomicInt.incrementAndGet();
return;
}
throw new RuntimeException();
});
checkCompletedNormally(cf1, "a test string");
checkCompletedNormally(cf2, null);
check(atomicInt.get() == (before + 1));
before = atomicInt.get();
cf1 = supplyAsync(() -> "a test string");
cf2 =
cf1.thenAcceptAsync(
(x) -> {
if (x.equals("a test string")) {
atomicInt.incrementAndGet();
return;
}
throw new RuntimeException();
});
checkCompletedNormally(cf1, "a test string");
checkCompletedNormally(cf2, null);
check(atomicInt.get() == (before + 1));
before = atomicInt.get();
cf1 = supplyAsync(() -> "a test string");
cf2 =
cf1.thenAcceptAsync(
(x) -> {
if (x.equals("a test string")) {
atomicInt.incrementAndGet();
return;
}
throw new RuntimeException();
},
executor);
checkCompletedNormally(cf1, "a test string");
checkCompletedNormally(cf2, null);
check(atomicInt.get() == (before + 1));
before = atomicInt.get();
cf1 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf2 =
cf1.thenAccept(
(x) -> {
atomicInt.incrementAndGet();
});
checkCompletedExceptionally(cf1);
checkCompletedExceptionally(cf2);
check(atomicInt.get() == before);
cf1 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf2 =
cf1.thenAcceptAsync(
(x) -> {
atomicInt.incrementAndGet();
});
checkCompletedExceptionally(cf1);
checkCompletedExceptionally(cf2);
check(atomicInt.get() == before);
cf1 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf2 =
cf1.thenAcceptAsync(
(x) -> {
atomicInt.incrementAndGet();
},
executor);
checkCompletedExceptionally(cf1);
checkCompletedExceptionally(cf2);
check(atomicInt.get() == before);
} catch (Throwable t) {
unexpected(t);
}
// ----------------------------------------------------------------
// thenRunXXX tests
// ----------------------------------------------------------------
try {
CompletableFuture<Void> cf2;
int before = atomicInt.get();
CompletableFuture<String> cf1 = supplyAsync(() -> "a test string");
cf2 =
cf1.thenRun(
() -> {
atomicInt.incrementAndGet();
});
checkCompletedNormally(cf1, "a test string");
checkCompletedNormally(cf2, null);
check(atomicInt.get() == (before + 1));
before = atomicInt.get();
cf1 = supplyAsync(() -> "a test string");
cf2 =
cf1.thenRunAsync(
() -> {
atomicInt.incrementAndGet();
});
checkCompletedNormally(cf1, "a test string");
checkCompletedNormally(cf2, null);
check(atomicInt.get() == (before + 1));
before = atomicInt.get();
cf1 = supplyAsync(() -> "a test string");
cf2 =
cf1.thenRunAsync(
() -> {
atomicInt.incrementAndGet();
},
executor);
checkCompletedNormally(cf1, "a test string");
checkCompletedNormally(cf2, null);
check(atomicInt.get() == (before + 1));
before = atomicInt.get();
cf1 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf2 =
cf1.thenRun(
() -> {
atomicInt.incrementAndGet();
});
checkCompletedExceptionally(cf1);
checkCompletedExceptionally(cf2);
check(atomicInt.get() == before);
cf1 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf2 =
cf1.thenRunAsync(
() -> {
atomicInt.incrementAndGet();
});
checkCompletedExceptionally(cf1);
checkCompletedExceptionally(cf2);
check(atomicInt.get() == before);
cf1 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf2 =
cf1.thenRunAsync(
() -> {
atomicInt.incrementAndGet();
},
executor);
checkCompletedExceptionally(cf1);
checkCompletedExceptionally(cf2);
check(atomicInt.get() == before);
} catch (Throwable t) {
unexpected(t);
}
// ----------------------------------------------------------------
// thenCombineXXX tests
// ----------------------------------------------------------------
try {
CompletableFuture<Integer> cf3;
CompletableFuture<Integer> cf1 = supplyAsync(() -> 1);
CompletableFuture<Integer> cf2 = supplyAsync(() -> 1);
cf3 =
cf1.thenCombine(
cf2,
(x, y) -> {
return x + y;
});
checkCompletedNormally(cf1, 1);
checkCompletedNormally(cf2, 1);
checkCompletedNormally(cf3, 2);
cf1 = supplyAsync(() -> 1);
cf2 = supplyAsync(() -> 1);
cf3 =
cf1.thenCombineAsync(
cf2,
(x, y) -> {
return x + y;
});
checkCompletedNormally(cf1, 1);
checkCompletedNormally(cf2, 1);
checkCompletedNormally(cf3, 2);
cf1 = supplyAsync(() -> 1);
cf2 = supplyAsync(() -> 1);
cf3 =
cf1.thenCombineAsync(
cf2,
(x, y) -> {
return x + y;
},
executor);
checkCompletedNormally(cf1, 1);
checkCompletedNormally(cf2, 1);
checkCompletedNormally(cf3, 2);
cf1 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf2 = supplyAsync(() -> 1);
cf3 =
cf1.thenCombine(
cf2,
(x, y) -> {
return 0;
});
checkCompletedExceptionally(cf1);
checkCompletedNormally(cf2, 1);
checkCompletedExceptionally(cf3);
cf1 = supplyAsync(() -> 1);
cf2 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf3 =
cf1.thenCombineAsync(
cf2,
(x, y) -> {
return 0;
});
checkCompletedNormally(cf1, 1);
checkCompletedExceptionally(cf2);
checkCompletedExceptionally(cf3);
cf1 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf2 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf3 =
cf1.thenCombineAsync(
cf2,
(x, y) -> {
return 0;
},
executor);
checkCompletedExceptionally(cf1);
checkCompletedExceptionally(cf2);
checkCompletedExceptionally(cf3);
} catch (Throwable t) {
unexpected(t);
}
// ----------------------------------------------------------------
// thenAcceptBothXXX tests
// ----------------------------------------------------------------
try {
CompletableFuture<Void> cf3;
int before = atomicInt.get();
CompletableFuture<Integer> cf1 = supplyAsync(() -> 1);
CompletableFuture<Integer> cf2 = supplyAsync(() -> 1);
cf3 =
cf1.thenAcceptBoth(
cf2,
(x, y) -> {
check(x + y == 2);
atomicInt.incrementAndGet();
});
checkCompletedNormally(cf1, 1);
checkCompletedNormally(cf2, 1);
checkCompletedNormally(cf3, null);
check(atomicInt.get() == (before + 1));
before = atomicInt.get();
cf1 = supplyAsync(() -> 1);
cf2 = supplyAsync(() -> 1);
cf3 =
cf1.thenAcceptBothAsync(
cf2,
(x, y) -> {
check(x + y == 2);
atomicInt.incrementAndGet();
});
checkCompletedNormally(cf1, 1);
checkCompletedNormally(cf2, 1);
checkCompletedNormally(cf3, null);
check(atomicInt.get() == (before + 1));
before = atomicInt.get();
cf1 = supplyAsync(() -> 1);
cf2 = supplyAsync(() -> 1);
cf3 =
cf1.thenAcceptBothAsync(
cf2,
(x, y) -> {
check(x + y == 2);
atomicInt.incrementAndGet();
},
executor);
checkCompletedNormally(cf1, 1);
checkCompletedNormally(cf2, 1);
checkCompletedNormally(cf3, null);
check(atomicInt.get() == (before + 1));
before = atomicInt.get();
cf1 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf2 = supplyAsync(() -> 1);
cf3 =
cf1.thenAcceptBoth(
cf2,
(x, y) -> {
atomicInt.incrementAndGet();
});
checkCompletedExceptionally(cf1);
checkCompletedNormally(cf2, 1);
checkCompletedExceptionally(cf3);
check(atomicInt.get() == before);
cf1 = supplyAsync(() -> 1);
cf2 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf3 =
cf1.thenAcceptBothAsync(
cf2,
(x, y) -> {
atomicInt.incrementAndGet();
});
checkCompletedNormally(cf1, 1);
checkCompletedExceptionally(cf2);
checkCompletedExceptionally(cf3);
check(atomicInt.get() == before);
cf1 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf2 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf3 =
cf1.thenAcceptBothAsync(
cf2,
(x, y) -> {
atomicInt.incrementAndGet();
},
executor);
checkCompletedExceptionally(cf1);
checkCompletedExceptionally(cf2);
checkCompletedExceptionally(cf3);
check(atomicInt.get() == before);
} catch (Throwable t) {
unexpected(t);
}
// ----------------------------------------------------------------
// runAfterBothXXX tests
// ----------------------------------------------------------------
try {
CompletableFuture<Void> cf3;
int before = atomicInt.get();
CompletableFuture<Integer> cf1 = supplyAsync(() -> 1);
CompletableFuture<Integer> cf2 = supplyAsync(() -> 1);
cf3 =
cf1.runAfterBoth(
cf2,
() -> {
check(cf1.isDone());
check(cf2.isDone());
atomicInt.incrementAndGet();
});
checkCompletedNormally(cf1, 1);
checkCompletedNormally(cf2, 1);
checkCompletedNormally(cf3, null);
check(atomicInt.get() == (before + 1));
before = atomicInt.get();
CompletableFuture<Integer> cfa = supplyAsync(() -> 1);
CompletableFuture<Integer> cfb = supplyAsync(() -> 1);
cf3 =
cfa.runAfterBothAsync(
cfb,
() -> {
check(cfa.isDone());
check(cfb.isDone());
atomicInt.incrementAndGet();
});
checkCompletedNormally(cfa, 1);
checkCompletedNormally(cfb, 1);
checkCompletedNormally(cf3, null);
check(atomicInt.get() == (before + 1));
before = atomicInt.get();
CompletableFuture<Integer> cfx = supplyAsync(() -> 1);
CompletableFuture<Integer> cfy = supplyAsync(() -> 1);
cf3 =
cfy.runAfterBothAsync(
cfx,
() -> {
check(cfx.isDone());
check(cfy.isDone());
atomicInt.incrementAndGet();
},
executor);
checkCompletedNormally(cfx, 1);
checkCompletedNormally(cfy, 1);
checkCompletedNormally(cf3, null);
check(atomicInt.get() == (before + 1));
before = atomicInt.get();
CompletableFuture<Integer> cf4 =
supplyAsync(
() -> {
throw new RuntimeException();
});
CompletableFuture<Integer> cf5 = supplyAsync(() -> 1);
cf3 =
cf5.runAfterBothAsync(
cf4,
() -> {
atomicInt.incrementAndGet();
},
executor);
checkCompletedExceptionally(cf4);
checkCompletedNormally(cf5, 1);
checkCompletedExceptionally(cf3);
check(atomicInt.get() == before);
before = atomicInt.get();
cf4 = supplyAsync(() -> 1);
cf5 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf3 =
cf5.runAfterBothAsync(
cf4,
() -> {
atomicInt.incrementAndGet();
});
checkCompletedNormally(cf4, 1);
checkCompletedExceptionally(cf5);
checkCompletedExceptionally(cf3);
check(atomicInt.get() == before);
before = atomicInt.get();
cf4 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf5 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf3 =
cf5.runAfterBoth(
cf4,
() -> {
atomicInt.incrementAndGet();
});
checkCompletedExceptionally(cf4);
checkCompletedExceptionally(cf5);
checkCompletedExceptionally(cf3);
check(atomicInt.get() == before);
} catch (Throwable t) {
unexpected(t);
}
// ----------------------------------------------------------------
// applyToEitherXXX tests
// ----------------------------------------------------------------
try {
CompletableFuture<Integer> cf3;
CompletableFuture<Integer> cf1 = supplyAsync(() -> 1);
CompletableFuture<Integer> cf2 = supplyAsync(() -> 2);
cf3 =
cf1.applyToEither(
cf2,
(x) -> {
check(x == 1 || x == 2);
return x;
});
checkCompletedNormally(cf3, new Object[] {1, 2});
check(cf1.isDone() || cf2.isDone());
cf1 = supplyAsync(() -> 1);
cf2 = supplyAsync(() -> 2);
cf3 =
cf1.applyToEitherAsync(
cf2,
(x) -> {
check(x == 1 || x == 2);
return x;
});
checkCompletedNormally(cf3, new Object[] {1, 2});
check(cf1.isDone() || cf2.isDone());
cf1 = supplyAsync(() -> 1);
cf2 = supplyAsync(() -> 2);
cf3 =
cf1.applyToEitherAsync(
cf2,
(x) -> {
check(x == 1 || x == 2);
return x;
},
executor);
checkCompletedNormally(cf3, new Object[] {1, 2});
check(cf1.isDone() || cf2.isDone());
cf1 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf2 = supplyAsync(() -> 2);
cf3 =
cf1.applyToEither(
cf2,
(x) -> {
check(x == 2);
return x;
});
try {
check(cf3.join() == 2);
} catch (CompletionException x) {
pass();
}
check(cf3.isDone());
check(cf1.isDone() || cf2.isDone());
cf1 = supplyAsync(() -> 1);
cf2 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf3 =
cf1.applyToEitherAsync(
cf2,
(x) -> {
check(x == 1);
return x;
});
try {
check(cf3.join() == 1);
} catch (CompletionException x) {
pass();
}
check(cf3.isDone());
check(cf1.isDone() || cf2.isDone());
cf1 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf2 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf3 =
cf1.applyToEitherAsync(
cf2,
(x) -> {
fail();
return x;
});
checkCompletedExceptionally(cf3);
check(cf1.isDone() || cf2.isDone());
final Phaser cf3Done = new Phaser(2);
cf1 =
supplyAsync(
() -> {
cf3Done.arriveAndAwaitAdvance();
return 1;
});
cf2 = supplyAsync(() -> 2);
cf3 =
cf1.applyToEither(
cf2,
(x) -> {
check(x == 2);
return x;
});
checkCompletedNormally(cf3, 2);
checkCompletedNormally(cf2, 2);
check(!cf1.isDone());
cf3Done.arrive();
checkCompletedNormally(cf1, 1);
checkCompletedNormally(cf3, 2);
cf1 = supplyAsync(() -> 1);
cf2 =
supplyAsync(
() -> {
cf3Done.arriveAndAwaitAdvance();
return 2;
});
cf3 =
cf1.applyToEitherAsync(
cf2,
(x) -> {
check(x == 1);
return x;
});
checkCompletedNormally(cf3, 1);
checkCompletedNormally(cf1, 1);
check(!cf2.isDone());
cf3Done.arrive();
checkCompletedNormally(cf2, 2);
checkCompletedNormally(cf3, 1);
} catch (Throwable t) {
unexpected(t);
}
// ----------------------------------------------------------------
// acceptEitherXXX tests
// ----------------------------------------------------------------
try {
CompletableFuture<Void> cf3;
int before = atomicInt.get();
CompletableFuture<Integer> cf1 = supplyAsync(() -> 1);
CompletableFuture<Integer> cf2 = supplyAsync(() -> 2);
cf3 =
cf1.acceptEither(
cf2,
(x) -> {
check(x == 1 || x == 2);
atomicInt.incrementAndGet();
});
checkCompletedNormally(cf3, null);
check(cf1.isDone() || cf2.isDone());
check(atomicInt.get() == (before + 1));
before = atomicInt.get();
cf1 = supplyAsync(() -> 1);
cf2 = supplyAsync(() -> 2);
cf3 =
cf1.acceptEitherAsync(
cf2,
(x) -> {
check(x == 1 || x == 2);
atomicInt.incrementAndGet();
});
checkCompletedNormally(cf3, null);
check(cf1.isDone() || cf2.isDone());
check(atomicInt.get() == (before + 1));
before = atomicInt.get();
cf1 = supplyAsync(() -> 1);
cf2 = supplyAsync(() -> 2);
cf3 =
cf2.acceptEitherAsync(
cf1,
(x) -> {
check(x == 1 || x == 2);
atomicInt.incrementAndGet();
},
executor);
checkCompletedNormally(cf3, null);
check(cf1.isDone() || cf2.isDone());
check(atomicInt.get() == (before + 1));
cf1 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf2 = supplyAsync(() -> 2);
cf3 =
cf2.acceptEitherAsync(
cf1,
(x) -> {
check(x == 2);
},
executor);
try {
check(cf3.join() == null);
} catch (CompletionException x) {
pass();
}
check(cf3.isDone());
check(cf1.isDone() || cf2.isDone());
cf1 = supplyAsync(() -> 1);
cf2 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf3 =
cf2.acceptEitherAsync(
cf1,
(x) -> {
check(x == 1);
});
try {
check(cf3.join() == null);
} catch (CompletionException x) {
pass();
}
check(cf3.isDone());
check(cf1.isDone() || cf2.isDone());
cf1 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf2 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf3 =
cf2.acceptEitherAsync(
cf1,
(x) -> {
fail();
});
checkCompletedExceptionally(cf3);
check(cf1.isDone() || cf2.isDone());
final Phaser cf3Done = new Phaser(2);
cf1 =
supplyAsync(
() -> {
cf3Done.arriveAndAwaitAdvance();
return 1;
});
cf2 = supplyAsync(() -> 2);
cf3 =
cf1.acceptEither(
cf2,
(x) -> {
check(x == 2);
});
checkCompletedNormally(cf3, null);
checkCompletedNormally(cf2, 2);
check(!cf1.isDone());
cf3Done.arrive();
checkCompletedNormally(cf1, 1);
checkCompletedNormally(cf3, null);
cf1 = supplyAsync(() -> 1);
cf2 =
supplyAsync(
() -> {
cf3Done.arriveAndAwaitAdvance();
return 2;
});
cf3 =
cf1.acceptEitherAsync(
cf2,
(x) -> {
check(x == 1);
});
checkCompletedNormally(cf3, null);
checkCompletedNormally(cf1, 1);
check(!cf2.isDone());
cf3Done.arrive();
checkCompletedNormally(cf2, 2);
checkCompletedNormally(cf3, null);
} catch (Throwable t) {
unexpected(t);
}
// ----------------------------------------------------------------
// runAfterEitherXXX tests
// ----------------------------------------------------------------
try {
CompletableFuture<Void> cf3;
int before = atomicInt.get();
CompletableFuture<Void> cf1 = runAsync(() -> {});
CompletableFuture<Void> cf2 = runAsync(() -> {});
cf3 =
cf1.runAfterEither(
cf2,
() -> {
atomicInt.incrementAndGet();
});
checkCompletedNormally(cf3, null);
check(cf1.isDone() || cf2.isDone());
check(atomicInt.get() == (before + 1));
before = atomicInt.get();
cf1 = runAsync(() -> {});
cf2 = runAsync(() -> {});
cf3 =
cf1.runAfterEitherAsync(
cf2,
() -> {
atomicInt.incrementAndGet();
});
checkCompletedNormally(cf3, null);
check(cf1.isDone() || cf2.isDone());
check(atomicInt.get() == (before + 1));
before = atomicInt.get();
cf1 = runAsync(() -> {});
cf2 = runAsync(() -> {});
cf3 =
cf2.runAfterEitherAsync(
cf1,
() -> {
atomicInt.incrementAndGet();
},
executor);
checkCompletedNormally(cf3, null);
check(cf1.isDone() || cf2.isDone());
check(atomicInt.get() == (before + 1));
before = atomicInt.get();
cf1 =
runAsync(
() -> {
throw new RuntimeException();
});
cf2 = runAsync(() -> {});
cf3 =
cf2.runAfterEither(
cf1,
() -> {
atomicInt.incrementAndGet();
});
try {
check(cf3.join() == null);
check(atomicInt.get() == (before + 1));
} catch (CompletionException x) {
pass();
}
check(cf3.isDone());
check(cf1.isDone() || cf2.isDone());
before = atomicInt.get();
cf1 = runAsync(() -> {});
cf2 =
runAsync(
() -> {
throw new RuntimeException();
});
cf3 =
cf1.runAfterEitherAsync(
cf2,
() -> {
atomicInt.incrementAndGet();
});
try {
check(cf3.join() == null);
check(atomicInt.get() == (before + 1));
} catch (CompletionException x) {
pass();
}
check(cf3.isDone());
check(cf1.isDone() || cf2.isDone());
before = atomicInt.get();
cf1 =
runAsync(
() -> {
throw new RuntimeException();
});
cf2 =
runAsync(
() -> {
throw new RuntimeException();
});
cf3 =
cf2.runAfterEitherAsync(
cf1,
() -> {
atomicInt.incrementAndGet();
},
executor);
checkCompletedExceptionally(cf3);
check(cf1.isDone() || cf2.isDone());
check(atomicInt.get() == before);
final Phaser cf3Done = new Phaser(2);
before = atomicInt.get();
cf1 =
runAsync(
() -> {
cf3Done.arriveAndAwaitAdvance();
});
cf2 = runAsync(() -> {});
cf3 =
cf1.runAfterEither(
cf2,
() -> {
atomicInt.incrementAndGet();
});
checkCompletedNormally(cf3, null);
checkCompletedNormally(cf2, null);
check(!cf1.isDone());
check(atomicInt.get() == (before + 1));
cf3Done.arrive();
checkCompletedNormally(cf1, null);
checkCompletedNormally(cf3, null);
before = atomicInt.get();
cf1 = runAsync(() -> {});
cf2 =
runAsync(
() -> {
cf3Done.arriveAndAwaitAdvance();
});
cf3 =
cf1.runAfterEitherAsync(
cf2,
() -> {
atomicInt.incrementAndGet();
});
checkCompletedNormally(cf3, null);
checkCompletedNormally(cf1, null);
check(!cf2.isDone());
check(atomicInt.get() == (before + 1));
cf3Done.arrive();
checkCompletedNormally(cf2, null);
checkCompletedNormally(cf3, null);
} catch (Throwable t) {
unexpected(t);
}
// ----------------------------------------------------------------
// thenComposeXXX tests
// ----------------------------------------------------------------
try {
CompletableFuture<Integer> cf2;
CompletableFuture<Integer> cf1 = supplyAsync(() -> 1);
cf2 =
cf1.thenCompose(
(x) -> {
check(x == 1);
return CompletableFuture.completedFuture(2);
});
checkCompletedNormally(cf1, 1);
checkCompletedNormally(cf2, 2);
cf1 = supplyAsync(() -> 1);
cf2 =
cf1.thenComposeAsync(
(x) -> {
check(x == 1);
return CompletableFuture.completedFuture(2);
});
checkCompletedNormally(cf1, 1);
checkCompletedNormally(cf2, 2);
cf1 = supplyAsync(() -> 1);
cf2 =
cf1.thenComposeAsync(
(x) -> {
check(x == 1);
return CompletableFuture.completedFuture(2);
},
executor);
checkCompletedNormally(cf1, 1);
checkCompletedNormally(cf2, 2);
int before = atomicInt.get();
cf1 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf2 =
cf1.thenCompose(
(x) -> {
atomicInt.incrementAndGet();
return CompletableFuture.completedFuture(2);
});
checkCompletedExceptionally(cf1);
checkCompletedExceptionally(cf2);
check(atomicInt.get() == before);
cf1 =
supplyAsync(
() -> {
throw new RuntimeException();
});
cf2 =
cf1.thenComposeAsync(
(x) -> {
atomicInt.incrementAndGet();
return CompletableFuture.completedFuture(2);
});
checkCompletedExceptionally(cf1);
checkCompletedExceptionally(cf2);
check(atomicInt.get() == before);
cf1 = supplyAsync(() -> 1);
cf2 =
cf1.thenComposeAsync(
(x) -> {
throw new RuntimeException();
},
executor);
checkCompletedNormally(cf1, 1);
checkCompletedExceptionally(cf2);
} catch (Throwable t) {
unexpected(t);
}
// ----------------------------------------------------------------
// anyOf tests
// ----------------------------------------------------------------
try {
CompletableFuture<Object> cf3;
for (int k = 0; k < 10; k++) {
CompletableFuture<Integer> cf1 = supplyAsync(() -> 1);
CompletableFuture<Integer> cf2 = supplyAsync(() -> 2);
cf3 = CompletableFuture.anyOf(cf1, cf2);
checkCompletedNormally(cf3, new Object[] {1, 2});
check(cf1.isDone() || cf2.isDone());
}
} catch (Throwable t) {
unexpected(t);
}
// ----------------------------------------------------------------
// allOf tests
// ----------------------------------------------------------------
try {
CompletableFuture<?> cf3;
for (int k = 0; k < 10; k++) {
CompletableFuture<Integer>[] cfs =
(CompletableFuture<Integer>[]) Array.newInstance(CompletableFuture.class, 10);
for (int j = 0; j < 10; j++) {
final int v = j;
cfs[j] = supplyAsync(() -> v);
}
cf3 = CompletableFuture.allOf(cfs);
for (int j = 0; j < 10; j++) checkCompletedNormally(cfs[j], j);
checkCompletedNormally(cf3, null);
}
} catch (Throwable t) {
unexpected(t);
}
// ----------------------------------------------------------------
// exceptionally tests
// ----------------------------------------------------------------
try {
CompletableFuture<Integer> cf2;
CompletableFuture<Integer> cf1 = supplyAsync(() -> 1);
cf2 =
cf1.exceptionally(
(t) -> {
fail("function should never be called");
return 2;
});
checkCompletedNormally(cf1, 1);
checkCompletedNormally(cf2, 1);
final RuntimeException t = new RuntimeException();
cf1 =
supplyAsync(
() -> {
throw t;
});
cf2 =
cf1.exceptionally(
(x) -> {
check(x.getCause() == t);
return 2;
});
checkCompletedExceptionally(cf1);
checkCompletedNormally(cf2, 2);
} catch (Throwable t) {
unexpected(t);
}
// ----------------------------------------------------------------
// handle tests
// ----------------------------------------------------------------
try {
CompletableFuture<Integer> cf2;
CompletableFuture<Integer> cf1 = supplyAsync(() -> 1);
cf2 = cf1.handle((x, t) -> x + 1);
checkCompletedNormally(cf1, 1);
checkCompletedNormally(cf2, 2);
final RuntimeException ex = new RuntimeException();
cf1 =
supplyAsync(
() -> {
throw ex;
});
cf2 =
cf1.handle(
(x, t) -> {
check(t.getCause() == ex);
return 2;
});
checkCompletedExceptionally(cf1);
checkCompletedNormally(cf2, 2);
} catch (Throwable t) {
unexpected(t);
}
}