Example usage for java.util.function Supplier get

Introduction

In this page you can find the example usage for java.util.function Supplier get.

Prototype

T get();

Source Link

Document

Gets a result.

Usage

From source file:com.example.app.communication.service.NotificationService.java

/**
 * Send email.//from  ww  w  .j a  v  a 2 s  .  c  o m
 *
 * @param emailTemplate the email template
 * @param context the context
 * @param defaultFromNameSupplier the supplier for the name of the default sender.
 * @param delayMillis the delay millis
 */
public void sendEmail(EmailTemplate emailTemplate, EmailTemplateContext context,
        @Nullable Supplier<String> defaultFromNameSupplier, Long delayMillis) {
    try {
        Preconditions.checkArgument(delayMillis >= 0, "Invalid arg: delayAmount. Expecting a number >= 0");
        final FileEntityMailDataHandler mdh = _emailTemplateProcessor.process(context, emailTemplate);
        StaticMailRequest smr = new StaticMailRequest(mdh);
        if (smr.getTo().length == 0) {
            final EmailTemplateRecipient recipientAttribute = context.getRecipientAttribute();
            if (recipientAttribute != null)
                smr.setTo(new String[] { recipientAttribute.getEmailAddress().getAddress() });
        }
        if (StringFactory.isEmptyString(smr.getFrom())) {
            UnparsedAddress from = new UnparsedAddress(_systemSender,
                    defaultFromNameSupplier != null ? defaultFromNameSupplier.get() : null);
            smr.setFrom(from.getAddress());
        }
        EmailTemplate et = (EmailTemplate) mdh.getAttribute(EmailTemplate.class);
        if (et != null) {
            smr.setMessageName(et.getProgrammaticName());
        }
        smr.setScheduledTime(delayMillis == 0 ? new Date()
                : new Date(System.currentTimeMillis() + TimeUnit.MILLISECONDS.toMillis(delayMillis)));

        _scheduledRequestProcessor.save(smr);
    } catch (MailDataHandlerException | EmailTemplateException e) {
        _logger.error("An unexpected error occurred while processing the email.", e);
    }
}

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From source file:enumj.Enumerator.java

/**
 * Returns an enumerator that enumerates over the iterator supplied lazily
 * the given number of times./*w  w w  . j a va2 s .  c  om*/
 *
 * @param <E> type of enumerated element.
 * @param source supplier of the iterator to repeat.
 * @param count the number of times to repeat.
 * @return the repeated enumerator.
 * @exception IllegalArgumentException <code>source</code> is
 * null or <code>count</code> is negative.
 * @see #repeat(java.lang.Object, long)
 * @see #repeatAll(int)
 * @see #repeatEach(int)
 */
public static <E> Enumerator<E> repeatAll(Supplier<Iterator<E>> source, long count) {
    Checks.ensureNotNull(source, Messages.NULL_ENUMERATOR_SOURCE);
    Checks.ensureNonNegative(count, Messages.NEGATIVE_ENUMERATOR_EXPECTED_COUNT);
    return rangeLong(0, count).flatMap(l -> source.get());
}

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From source file:com.joyent.manta.client.crypto.MantaEncryptedObjectInputStream.java

/**
 * Finds the correct HMAC instance based on the metadata supplied from the
 * encrypted object.//  ww  w .  j  av a2s.  com
 *
 * @return HMAC instance or null when encrypted by a AEAD cipher
 */
private HMac findHmac() {
    if (this.cipherDetails.isAEADCipher() || !this.authenticateCiphertext) {
        return null;
    }

    String hmacString = getHeaderAsString(MantaHttpHeaders.ENCRYPTION_HMAC_TYPE);

    if (hmacString == null) {
        String msg = String.format("HMAC header metadata [%s] was missing from object",
                MantaHttpHeaders.ENCRYPTION_HMAC_TYPE);
        MantaClientEncryptionException e = new MantaClientEncryptionException(msg);
        annotateException(e);
        throw e;
    }

    if (hmacString.isEmpty()) {
        String msg = String.format("HMAC header metadata [%s] was empty on object",
                MantaHttpHeaders.ENCRYPTION_HMAC_TYPE);
        MantaClientEncryptionException e = new MantaClientEncryptionException(msg);
        annotateException(e);
        throw e;
    }

    Supplier<HMac> macSupplier = SupportedHmacsLookupMap.INSTANCE.get(hmacString);

    if (macSupplier == null) {
        String msg = String.format("HMAC stored in header metadata [%s] is unsupported", hmacString);
        MantaClientEncryptionException e = new MantaClientEncryptionException(msg);
        annotateException(e);
        throw e;
    }

    return macSupplier.get();
}

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From source file:com.redhat.red.build.koji.KojiClient.java

private UrlBuilder sessionUrlBuilder(KojiSessionInfo session, Supplier<Map<String, Object>> paramEditor) {
    return (url) -> {
        if (session == null) {
            return new UrlBuildResult(url);
        }//from  w w  w  .jav  a2  s. c o m

        Map<String, String> params = new HashMap<>();
        params.put(SESSION_ID_PARAM, Integer.toString(session.getSessionId()));
        params.put(SESSION_KEY_PARAM, session.getSessionKey());
        params.put(CALL_NUMBER_PARAM, Integer.toString(callCount.getAndIncrement()));

        if (paramEditor != null) {
            Map<String, Object> extraParams = paramEditor.get();
            if (extraParams != null) {
                MalformedURLException error = (MalformedURLException) extraParams.get(EMBEDDED_ERROR_PARAM);
                if (error != null) {
                    return new UrlBuildResult(error);
                } else {
                    extraParams.forEach((key, value) -> {
                        params.put(key, String.valueOf(value));
                    });
                }
            }
        }

        String result = UrlUtils.buildUrl(url, params);

        Logger logger = LoggerFactory.getLogger(KojiClient.class);
        logger.debug("\n\n\n\nBuild URL: {}\n\n\n\n", result);
        return new UrlBuildResult(result);
    };
}

---

From source file:com.ikanow.aleph2.shared.crud.mongodb.services.TestMongoDbCrudService.java

@Test
public void testCreateSingleObject_ObjectId() throws InterruptedException, ExecutionException {

    final MongoDbCrudService<TestObjectIdBean, ObjectId> service = getTestService(
            "testCreateSingleObject_ObjectId", TestObjectIdBean.class, ObjectId.class);

    assertEquals(0, service._state.orig_coll.count());

    // 1) Add a new object to an empty DB

    final TestObjectIdBean test = new TestObjectIdBean();

    final Future<Supplier<Object>> result = service.storeObject(test);

    assertEquals(1, service._state.orig_coll.count());

    final Supplier<Object> val = result.get();

    ObjectId id = (ObjectId) val.get();

    final DBObject retval = service._state.orig_coll.findOne(id);

    assertEquals(new BasicDBObject("_id", id), retval);
}

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From source file:com.thinkbiganalytics.metadata.rest.client.MetadataClient.java

private <R> R nullable(Supplier<R> supplier) {
    try {/*from w  w  w . ja  v a  2 s.co m*/
        return supplier.get();
    } catch (HttpClientErrorException e) {
        if (e.getStatusCode() == HttpStatus.NOT_FOUND) {
            return null;
        } else {
            throw e;
        }
    }
}

---

From source file:io.pravega.segmentstore.server.containers.StreamSegmentMapperTests.java

/**
 * Tests the ability of the StreamSegmentMapper to generate/return the Id of an existing StreamSegment, as well as
 * retrieving existing attributes.//from   w w w  .  j  a  v a2s  .  c  om
 */
@Test
public void testGetOrAssignStreamSegmentId() {
    final int segmentCount = 10;
    final int transactionsPerSegment = 5;
    final long noSegmentId = ContainerMetadata.NO_STREAM_SEGMENT_ID;
    AtomicLong currentSegmentId = new AtomicLong(Integer.MAX_VALUE);
    Supplier<Long> nextSegmentId = () -> currentSegmentId.decrementAndGet() % 2 == 0 ? noSegmentId
            : currentSegmentId.get();

    @Cleanup
    TestContext context = new TestContext();

    HashSet<String> storageSegments = new HashSet<>();
    for (int i = 0; i < segmentCount; i++) {
        String segmentName = getName(i);
        storageSegments.add(segmentName);
        setAttributes(segmentName, nextSegmentId.get(), storageSegments.size() % ATTRIBUTE_COUNT, context);

        for (int j = 0; j < transactionsPerSegment; j++) {
            // There is a small chance of a name conflict here, but we don't care. As long as we get at least one
            // Transaction per segment, we should be fine.
            String transactionName = StreamSegmentNameUtils.getTransactionNameFromId(segmentName,
                    UUID.randomUUID());
            storageSegments.add(transactionName);
            setAttributes(transactionName, nextSegmentId.get(), storageSegments.size() % ATTRIBUTE_COUNT,
                    context);
        }
    }

    // We setup all necessary handlers, except the one for create. We do not need to create new Segments here.
    setupOperationLog(context);
    Predicate<String> isSealed = segmentName -> segmentName.hashCode() % 2 == 0;
    Function<String, Long> getInitialLength = segmentName -> (long) Math.abs(segmentName.hashCode());
    setupStorageGetHandler(context, storageSegments, segmentName -> new StreamSegmentInformation(segmentName,
            getInitialLength.apply(segmentName), isSealed.test(segmentName), false, new ImmutableDate()));

    // First, map all the parents (stand-alone segments).
    for (String name : storageSegments) {
        if (StreamSegmentNameUtils.getParentStreamSegmentName(name) == null) {
            long id = context.mapper.getOrAssignStreamSegmentId(name, TIMEOUT).join();
            Assert.assertNotEquals("No id was assigned for StreamSegment " + name,
                    ContainerMetadata.NO_STREAM_SEGMENT_ID, id);
            SegmentMetadata sm = context.metadata.getStreamSegmentMetadata(id);
            Assert.assertNotNull("No metadata was created for StreamSegment " + name, sm);
            long expectedLength = getInitialLength.apply(name);
            boolean expectedSeal = isSealed.test(name);
            Assert.assertEquals("Metadata does not have the expected length for StreamSegment " + name,
                    expectedLength, sm.getDurableLogLength());
            Assert.assertEquals(
                    "Metadata does not have the expected value for isSealed for StreamSegment " + name,
                    expectedSeal, sm.isSealed());

            val segmentState = context.stateStore.get(name, TIMEOUT).join();
            Map<UUID, Long> expectedAttributes = segmentState == null ? null : segmentState.getAttributes();
            SegmentMetadataComparer.assertSameAttributes(
                    "Unexpected attributes in metadata for StreamSegment " + name, expectedAttributes, sm);
        }
    }

    // Now, map all the Transactions.
    for (String name : storageSegments) {
        String parentName = StreamSegmentNameUtils.getParentStreamSegmentName(name);
        if (parentName != null) {
            long id = context.mapper.getOrAssignStreamSegmentId(name, TIMEOUT).join();
            Assert.assertNotEquals("No id was assigned for Transaction " + name,
                    ContainerMetadata.NO_STREAM_SEGMENT_ID, id);
            SegmentMetadata sm = context.metadata.getStreamSegmentMetadata(id);
            Assert.assertNotNull("No metadata was created for Transaction " + name, sm);
            long expectedLength = getInitialLength.apply(name);
            boolean expectedSeal = isSealed.test(name);
            Assert.assertEquals("Metadata does not have the expected length for Transaction " + name,
                    expectedLength, sm.getDurableLogLength());
            Assert.assertEquals(
                    "Metadata does not have the expected value for isSealed for Transaction " + name,
                    expectedSeal, sm.isSealed());

            val segmentState = context.stateStore.get(name, TIMEOUT).join();
            Map<UUID, Long> expectedAttributes = segmentState == null ? null : segmentState.getAttributes();
            SegmentMetadataComparer.assertSameAttributes(
                    "Unexpected attributes in metadata for Transaction " + name, expectedAttributes, sm);

            // Check parenthood.
            Assert.assertNotEquals("No parent defined in metadata for Transaction " + name,
                    ContainerMetadata.NO_STREAM_SEGMENT_ID, sm.getParentId());
            long parentId = context.metadata.getStreamSegmentId(parentName, false);
            Assert.assertEquals("Unexpected parent defined in metadata for Transaction " + name, parentId,
                    sm.getParentId());
        }
    }
}

---

From source file:com.thinkbiganalytics.metadata.rest.client.MetadataClient.java

private <R> Optional<R> optinal(Supplier<R> supplier) {
    try {/*w  w  w.  j  av a 2 s  . c o  m*/
        return Optional.ofNullable(supplier.get());
    } catch (HttpClientErrorException e) {
        if (e.getStatusCode() == HttpStatus.NOT_FOUND) {
            return Optional.empty();
        } else {
            throw e;
        }
    }
}

---

From source file:com.ikanow.aleph2.shared.crud.mongodb.services.TestMongoDbCrudService.java

@Test
public void testCreateSingleObject() throws InterruptedException, ExecutionException {

    final MongoDbCrudService<TestBean, String> service = getTestService("testCreateSingleObject",
            TestBean.class, String.class);

    assertEquals(0, service._state.orig_coll.count());

    // 1) Add a new object to an empty DB

    final TestBean test = new TestBean();
    test._id = "_id_1";
    test.test_string = "test_string_1";

    final Future<Supplier<Object>> result = service.storeObject(test);

    final Supplier<Object> val = result.get();

    assertEquals("_id_1", val.get());

    final DBObject retval = service._state.orig_coll.findOne();

    assertEquals(1, service._state.orig_coll.count());

    assertEquals("{ \"_id\" : \"_id_1\" , \"test_string\" : \"test_string_1\"}", retval.toString());

    // 2) Add the _id again, should fail

    final TestBean test2 = BeanTemplateUtils.clone(test).with("test_string", "test_string_2").done();

    final Future<Supplier<Object>> result2 = service.storeObject(test2);

    Exception expected_ex = null;
    try {//from w ww.j a v a2s  .c  o  m
        result2.get();
        fail("Should have thrown exception on duplicate insert");
    } catch (Exception e) {
        expected_ex = e;
    }
    if (null != expected_ex)
        assertThat(expected_ex.getCause(), instanceOf(MongoException.class));

    assertEquals(1, service._state.orig_coll.count());

    final DBObject retval2 = service._state.orig_coll.findOne();

    assertEquals("{ \"_id\" : \"_id_1\" , \"test_string\" : \"test_string_1\"}", retval2.toString());

    // 3) Add the same with override set 

    @SuppressWarnings("unused")
    final Future<Supplier<Object>> result3 = service.storeObject(test2, true);

    assertEquals(1, service._state.orig_coll.count());

    final DBObject retval3 = service._state.orig_coll.findOne();

    assertEquals("{ \"_id\" : \"_id_1\" , \"test_string\" : \"test_string_2\"}", retval3.toString());

    //4) add with no id

    final TestBean test4 = new TestBean();
    test4.test_string = "test_string_4";

    final Future<Supplier<Object>> result4 = service.storeObject(test4, true);

    assertEquals(2, service._state.orig_coll.count());

    final String id = result4.get().get().toString();

    final DBObject retval4 = service._state.orig_coll.findOne(id);

    assertEquals("test_string_4", retval4.get("test_string"));
}

---

From source file:com.ikanow.aleph2.analytics.services.DeduplicationService.java

@SuppressWarnings("unchecked")
@Override//from w  ww. ja v  a  2 s .co  m
public void onStageComplete(final boolean is_original) {
    _custom_handler.optional().ifPresent(handler -> handler.onStageComplete(true));

    final Supplier<String> subsystem_builder = () -> (_is_system_dedup_stage.get() ? ""
            : ("." + _control.get().name() + Optional.ofNullable("no_name")));
    final Supplier<String> command_builder = () -> (_is_system_dedup_stage.get() ? "system"
            : _control.get().name() + Optional.ofNullable("no_name"));

    _logger.optional().ifPresent(l -> l.log(Level.DEBUG, ErrorUtils.lazyBuildMessage(true,
            () -> "DeduplicationService" + subsystem_builder.get(),
            () -> command_builder.get() + ".onStageComplete", () -> null,
            () -> ErrorUtils.get(
                    "Job {0} completed deduplication: nondup_keys={1}, dup_keys={2}, dups_inc={3}, dups_db={4}, del={5}",
                    command_builder.get(), Integer.toString(_mutable_stats.nonduplicate_keys),
                    Integer.toString(_mutable_stats.duplicate_keys),
                    Integer.toString(_mutable_stats.duplicates_incoming),
                    Integer.toString(_mutable_stats.duplicates_existing),
                    Integer.toString(_mutable_stats.deleted)),
            () -> (Map<String, Object>) _mapper.convertValue(_mutable_stats, Map.class))));

    if (!mutable_uncompleted_deletes.isEmpty()) {
        try {
            CompletableFuture.allOf(mutable_uncompleted_deletes.stream().toArray(CompletableFuture[]::new))
                    .get(60, TimeUnit.SECONDS);
        } catch (Exception e) {
            _logger.optional().ifPresent(l -> l.log(Level.ERROR,
                    ErrorUtils.lazyBuildMessage(false, () -> "DeduplicationService" + subsystem_builder.get(),
                            () -> command_builder.get() + ".onStageComplete", () -> null,
                            () -> ErrorUtils.get("Job {0}: error completing deleted ids: {1}",
                                    command_builder.get(), e.getMessage()),
                            () -> null)));
        }
    }
    _logger.optional().ifPresent(Lambdas.wrap_consumer_u(l -> l.flush().get(60, TimeUnit.SECONDS)));
}

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