Examples with UncheckedExecutionException com.google.common.util.concurrent.UncheckedExecutionException used on opensource projects

Example 31 with UncheckedExecutionException

use of com.google.common.util.concurrent.UncheckedExecutionException in project guava by google.

the class CacheLoadingTest method testLoadUncheckedException.

public void testLoadUncheckedException() throws ExecutionException {
    Exception e = new RuntimeException();
    CacheLoader<Object, Object> loader = exceptionLoader(e);
    LoadingCache<Object, Object> cache = CacheBuilder.newBuilder().recordStats().build(loader);
    CacheStats stats = cache.stats();
    assertEquals(0, stats.missCount());
    assertEquals(0, stats.loadSuccessCount());
    assertEquals(0, stats.loadExceptionCount());
    assertEquals(0, stats.hitCount());
    try {
        cache.get(new Object());
        fail();
    } catch (UncheckedExecutionException expected) {
        assertSame(e, expected.getCause());
    }
    stats = cache.stats();
    assertEquals(1, stats.missCount());
    assertEquals(0, stats.loadSuccessCount());
    assertEquals(1, stats.loadExceptionCount());
    assertEquals(0, stats.hitCount());
    try {
        cache.getUnchecked(new Object());
        fail();
    } catch (UncheckedExecutionException expected) {
        assertSame(e, expected.getCause());
    }
    stats = cache.stats();
    assertEquals(2, stats.missCount());
    assertEquals(0, stats.loadSuccessCount());
    assertEquals(2, stats.loadExceptionCount());
    assertEquals(0, stats.hitCount());
    cache.refresh(new Object());
    checkLoggedCause(e);
    stats = cache.stats();
    assertEquals(2, stats.missCount());
    assertEquals(0, stats.loadSuccessCount());
    assertEquals(3, stats.loadExceptionCount());
    assertEquals(0, stats.hitCount());
    Exception callableException = new RuntimeException();
    try {
        cache.get(new Object(), throwing(callableException));
        fail();
    } catch (UncheckedExecutionException expected) {
        assertSame(callableException, expected.getCause());
    }
    stats = cache.stats();
    assertEquals(3, stats.missCount());
    assertEquals(0, stats.loadSuccessCount());
    assertEquals(4, stats.loadExceptionCount());
    assertEquals(0, stats.hitCount());
    try {
        cache.getAll(asList(new Object()));
        fail();
    } catch (UncheckedExecutionException expected) {
        assertSame(e, expected.getCause());
    }
    stats = cache.stats();
    assertEquals(4, stats.missCount());
    assertEquals(0, stats.loadSuccessCount());
    assertEquals(5, stats.loadExceptionCount());
    assertEquals(0, stats.hitCount());
}

Example 32 with UncheckedExecutionException

use of com.google.common.util.concurrent.UncheckedExecutionException in project guava by hceylan.

the class CacheLoadingTest method testBulkLoadUncheckedException.

public void testBulkLoadUncheckedException() throws ExecutionException {
    Exception e = new RuntimeException();
    CacheLoader<Object, Object> loader = exceptionLoader(e);
    LoadingCache<Object, Object> cache = CacheBuilder.newBuilder().build(bulkLoader(loader));
    CacheStats stats = cache.stats();
    assertEquals(0, stats.missCount());
    assertEquals(0, stats.loadSuccessCount());
    assertEquals(0, stats.loadExceptionCount());
    assertEquals(0, stats.hitCount());
    try {
        cache.getAll(asList(new Object()));
        fail();
    } catch (UncheckedExecutionException expected) {
        assertSame(e, expected.getCause());
    }
    stats = cache.stats();
    assertEquals(1, stats.missCount());
    assertEquals(0, stats.loadSuccessCount());
    assertEquals(1, stats.loadExceptionCount());
    assertEquals(0, stats.hitCount());
}

Example 33 with UncheckedExecutionException

use of com.google.common.util.concurrent.UncheckedExecutionException in project guava by hceylan.

the class CacheLoadingTest method testReloadAfterFailure.

public void testReloadAfterFailure() throws ExecutionException {
    final AtomicInteger count = new AtomicInteger();
    final Exception e = new IllegalStateException("exception to trigger failure on first load()");
    CacheLoader<Integer, String> failOnceFunction = new CacheLoader<Integer, String>() {

        @Override
        public String load(Integer key) throws Exception {
            if (count.getAndIncrement() == 0) {
                throw e;
            }
            return key.toString();
        }
    };
    CountingRemovalListener<Integer, String> removalListener = countingRemovalListener();
    LoadingCache<Integer, String> cache = CacheBuilder.newBuilder().removalListener(removalListener).build(failOnceFunction);
    try {
        cache.getUnchecked(1);
        fail();
    } catch (UncheckedExecutionException ue) {
        assertSame(e, ue.getCause());
    }
    assertEquals("1", cache.getUnchecked(1));
    assertEquals(0, removalListener.getCount());
    count.set(0);
    cache.refresh(2);
    checkLoggedCause(e);
    assertEquals("2", cache.getUnchecked(2));
    assertEquals(0, removalListener.getCount());
}

Example 34 with UncheckedExecutionException

use of com.google.common.util.concurrent.UncheckedExecutionException in project guava by hceylan.

the class CacheLoadingTest method testLoadUncheckedException.

public void testLoadUncheckedException() throws ExecutionException {
    Exception e = new RuntimeException();
    CacheLoader<Object, Object> loader = exceptionLoader(e);
    LoadingCache<Object, Object> cache = CacheBuilder.newBuilder().build(loader);
    CacheStats stats = cache.stats();
    assertEquals(0, stats.missCount());
    assertEquals(0, stats.loadSuccessCount());
    assertEquals(0, stats.loadExceptionCount());
    assertEquals(0, stats.hitCount());
    try {
        cache.get(new Object());
        fail();
    } catch (UncheckedExecutionException expected) {
        assertSame(e, expected.getCause());
    }
    stats = cache.stats();
    assertEquals(1, stats.missCount());
    assertEquals(0, stats.loadSuccessCount());
    assertEquals(1, stats.loadExceptionCount());
    assertEquals(0, stats.hitCount());
    try {
        cache.getUnchecked(new Object());
        fail();
    } catch (UncheckedExecutionException expected) {
        assertSame(e, expected.getCause());
    }
    stats = cache.stats();
    assertEquals(2, stats.missCount());
    assertEquals(0, stats.loadSuccessCount());
    assertEquals(2, stats.loadExceptionCount());
    assertEquals(0, stats.hitCount());
    cache.refresh(new Object());
    checkLoggedCause(e);
    stats = cache.stats();
    assertEquals(2, stats.missCount());
    assertEquals(0, stats.loadSuccessCount());
    assertEquals(3, stats.loadExceptionCount());
    assertEquals(0, stats.hitCount());
    Exception callableException = new RuntimeException();
    try {
        cache.get(new Object(), throwing(callableException));
        fail();
    } catch (UncheckedExecutionException expected) {
        assertSame(callableException, expected.getCause());
    }
    stats = cache.stats();
    assertEquals(3, stats.missCount());
    assertEquals(0, stats.loadSuccessCount());
    assertEquals(4, stats.loadExceptionCount());
    assertEquals(0, stats.hitCount());
    try {
        cache.getAll(asList(new Object()));
        fail();
    } catch (UncheckedExecutionException expected) {
        assertSame(e, expected.getCause());
    }
    stats = cache.stats();
    assertEquals(4, stats.missCount());
    assertEquals(0, stats.loadSuccessCount());
    assertEquals(5, stats.loadExceptionCount());
    assertEquals(0, stats.hitCount());
}

Example 35 with UncheckedExecutionException

use of com.google.common.util.concurrent.UncheckedExecutionException in project guava by hceylan.

the class CacheLoadingTest method testConcurrentLoadingUncheckedException.

/**
   * On a concurrent computation that throws an unchecked exception, all threads should get the
   * (wrapped) exception, with the loader called only once. The result should not be cached (a later
   * request should call the loader again).
   */
private static void testConcurrentLoadingUncheckedException(CacheBuilder<Object, Object> builder) throws InterruptedException {
    int count = 10;
    final AtomicInteger callCount = new AtomicInteger();
    final CountDownLatch startSignal = new CountDownLatch(count + 1);
    final RuntimeException e = new RuntimeException();
    LoadingCache<String, String> cache = builder.build(new CacheLoader<String, String>() {

        @Override
        public String load(String key) throws InterruptedException {
            callCount.incrementAndGet();
            startSignal.await();
            throw e;
        }
    });
    List<Object> result = doConcurrentGet(cache, "bar", count, startSignal);
    assertEquals(1, callCount.get());
    for (int i = 0; i < count; i++) {
        // doConcurrentGet alternates between calling getUnchecked and calling get, but an unchecked
        // exception thrown by the loader is always wrapped as an UncheckedExecutionException.
        assertTrue(result.get(i) instanceof UncheckedExecutionException);
        assertSame(e, ((UncheckedExecutionException) result.get(i)).getCause());
    }
    // subsequent calls should call the loader again, not get the old exception
    try {
        cache.getUnchecked("bar");
        fail();
    } catch (UncheckedExecutionException expected) {
    }
    assertEquals(2, callCount.get());
}