Examples with Sequence io.druid.java.util.common.guava.Sequence used on opensource projects

Example 31 with Sequence

use of io.druid.java.util.common.guava.Sequence in project druid by druid-io.

the class SpecificSegmentQueryRunner method run.

@Override
public Sequence<T> run(final Query<T> input, final Map<String, Object> responseContext) {
    final Query<T> query = input.withQuerySegmentSpec(specificSpec);
    final Thread currThread = Thread.currentThread();
    final String currThreadName = currThread.getName();
    final String newName = String.format("%s_%s_%s", query.getType(), query.getDataSource(), query.getIntervals());
    final Sequence<T> baseSequence = doNamed(currThread, currThreadName, newName, new Supplier<Sequence<T>>() {

        @Override
        public Sequence<T> get() {
            return base.run(query, responseContext);
        }
    });
    Sequence<T> segmentMissingCatchingSequence = new Sequence<T>() {

        @Override
        public <OutType> OutType accumulate(final OutType initValue, final Accumulator<OutType, T> accumulator) {
            try {
                return baseSequence.accumulate(initValue, accumulator);
            } catch (SegmentMissingException e) {
                appendMissingSegment(responseContext);
                return initValue;
            }
        }

        @Override
        public <OutType> Yielder<OutType> toYielder(final OutType initValue, final YieldingAccumulator<OutType, T> accumulator) {
            try {
                return makeYielder(baseSequence.toYielder(initValue, accumulator));
            } catch (SegmentMissingException e) {
                appendMissingSegment(responseContext);
                return Yielders.done(initValue, null);
            }
        }

        private <OutType> Yielder<OutType> makeYielder(final Yielder<OutType> yielder) {
            return new Yielder<OutType>() {

                @Override
                public OutType get() {
                    return yielder.get();
                }

                @Override
                public Yielder<OutType> next(final OutType initValue) {
                    try {
                        return yielder.next(initValue);
                    } catch (SegmentMissingException e) {
                        appendMissingSegment(responseContext);
                        return Yielders.done(initValue, null);
                    }
                }

                @Override
                public boolean isDone() {
                    return yielder.isDone();
                }

                @Override
                public void close() throws IOException {
                    yielder.close();
                }
            };
        }
    };
    return Sequences.wrap(segmentMissingCatchingSequence, new SequenceWrapper() {

        @Override
        public <RetType> RetType wrap(Supplier<RetType> sequenceProcessing) {
            return doNamed(currThread, currThreadName, newName, sequenceProcessing);
        }
    });
}

Example 32 with Sequence

use of io.druid.java.util.common.guava.Sequence in project druid by druid-io.

the class CachingClusteredClientTest method testOutOfOrderSequenceMerging.

@Test
public void testOutOfOrderSequenceMerging() throws Exception {
    List<Sequence<Result<TopNResultValue>>> sequences = ImmutableList.of(Sequences.simple(makeTopNResultsWithoutRename(new DateTime("2011-01-07"), "a", 50, 4991, "b", 50, 4990, "c", 50, 4989, new DateTime("2011-01-08"), "a", 50, 4988, "b", 50, 4987, "c", 50, 4986, new DateTime("2011-01-09"), "a", 50, 4985, "b", 50, 4984, "c", 50, 4983)), Sequences.simple(makeTopNResultsWithoutRename(new DateTime("2011-01-06T01"), "a", 50, 4991, "b", 50, 4990, "c", 50, 4989, new DateTime("2011-01-07T01"), "a", 50, 4991, "b", 50, 4990, "c", 50, 4989, new DateTime("2011-01-08T01"), "a", 50, 4988, "b", 50, 4987, "c", 50, 4986, new DateTime("2011-01-09T01"), "a", 50, 4985, "b", 50, 4984, "c", 50, 4983)));
    TestHelper.assertExpectedResults(makeTopNResultsWithoutRename(new DateTime("2011-01-06T01"), "a", 50, 4991, "b", 50, 4990, "c", 50, 4989, new DateTime("2011-01-07"), "a", 50, 4991, "b", 50, 4990, "c", 50, 4989, new DateTime("2011-01-07T01"), "a", 50, 4991, "b", 50, 4990, "c", 50, 4989, new DateTime("2011-01-08"), "a", 50, 4988, "b", 50, 4987, "c", 50, 4986, new DateTime("2011-01-08T01"), "a", 50, 4988, "b", 50, 4987, "c", 50, 4986, new DateTime("2011-01-09"), "a", 50, 4985, "b", 50, 4984, "c", 50, 4983, new DateTime("2011-01-09T01"), "a", 50, 4985, "b", 50, 4984, "c", 50, 4983), client.mergeCachedAndUncachedSequences(new TopNQueryBuilder().dataSource("test").intervals("2011-01-06/2011-01-10").dimension("a").metric("b").threshold(3).aggregators(Arrays.<AggregatorFactory>asList(new CountAggregatorFactory("b"))).build(), sequences));
}

Example 33 with Sequence

use of io.druid.java.util.common.guava.Sequence in project druid by druid-io.

the class CachingQueryRunnerTest method testCloseAndPopulate.

private void testCloseAndPopulate(List<Result> expectedRes, List<Result> expectedCacheRes, Query query, QueryToolChest toolchest) throws Exception {
    final AssertingClosable closable = new AssertingClosable();
    final Sequence resultSeq = Sequences.wrap(Sequences.simple(expectedRes), new SequenceWrapper() {

        @Override
        public void before() {
            Assert.assertFalse(closable.isClosed());
        }

        @Override
        public void after(boolean isDone, Throwable thrown) throws Exception {
            closable.close();
        }
    });
    final CountDownLatch cacheMustBePutOnce = new CountDownLatch(1);
    Cache cache = new Cache() {

        private final Map<NamedKey, byte[]> baseMap = new ConcurrentHashMap<>();

        @Override
        public byte[] get(NamedKey key) {
            return baseMap.get(key);
        }

        @Override
        public void put(NamedKey key, byte[] value) {
            baseMap.put(key, value);
            cacheMustBePutOnce.countDown();
        }

        @Override
        public Map<NamedKey, byte[]> getBulk(Iterable<NamedKey> keys) {
            return null;
        }

        @Override
        public void close(String namespace) {
        }

        @Override
        public CacheStats getStats() {
            return null;
        }

        @Override
        public boolean isLocal() {
            return true;
        }

        @Override
        public void doMonitor(ServiceEmitter emitter) {
        }
    };
    String segmentIdentifier = "segment";
    SegmentDescriptor segmentDescriptor = new SegmentDescriptor(new Interval("2011/2012"), "version", 0);
    DefaultObjectMapper objectMapper = new DefaultObjectMapper();
    CachingQueryRunner runner = new CachingQueryRunner(segmentIdentifier, segmentDescriptor, objectMapper, cache, toolchest, new QueryRunner() {

        @Override
        public Sequence run(Query query, Map responseContext) {
            return resultSeq;
        }
    }, backgroundExecutorService, new CacheConfig() {

        @Override
        public boolean isPopulateCache() {
            return true;
        }

        @Override
        public boolean isUseCache() {
            return true;
        }
    });
    CacheStrategy cacheStrategy = toolchest.getCacheStrategy(query);
    Cache.NamedKey cacheKey = CacheUtil.computeSegmentCacheKey(segmentIdentifier, segmentDescriptor, cacheStrategy.computeCacheKey(query));
    HashMap<String, Object> context = new HashMap<String, Object>();
    Sequence res = runner.run(query, context);
    // base sequence is not closed yet
    Assert.assertFalse("sequence must not be closed", closable.isClosed());
    Assert.assertNull("cache must be empty", cache.get(cacheKey));
    ArrayList results = Sequences.toList(res, new ArrayList());
    Assert.assertTrue(closable.isClosed());
    Assert.assertEquals(expectedRes.toString(), results.toString());
    // wait for background caching finish
    // wait at most 10 seconds to fail the test to avoid block overall tests
    Assert.assertTrue("cache must be populated", cacheMustBePutOnce.await(10, TimeUnit.SECONDS));
    byte[] cacheValue = cache.get(cacheKey);
    Assert.assertNotNull(cacheValue);
    Function<Object, Result> fn = cacheStrategy.pullFromCache();
    List<Result> cacheResults = Lists.newArrayList(Iterators.transform(objectMapper.readValues(objectMapper.getFactory().createParser(cacheValue), cacheStrategy.getCacheObjectClazz()), fn));
    Assert.assertEquals(expectedCacheRes.toString(), cacheResults.toString());
}

Example 34 with Sequence

use of io.druid.java.util.common.guava.Sequence in project druid by druid-io.

the class CachingQueryRunnerTest method testUseCache.

private void testUseCache(List<Result> expectedResults, Query query, QueryToolChest toolchest) throws Exception {
    DefaultObjectMapper objectMapper = new DefaultObjectMapper();
    String segmentIdentifier = "segment";
    SegmentDescriptor segmentDescriptor = new SegmentDescriptor(new Interval("2011/2012"), "version", 0);
    CacheStrategy cacheStrategy = toolchest.getCacheStrategy(query);
    Cache.NamedKey cacheKey = CacheUtil.computeSegmentCacheKey(segmentIdentifier, segmentDescriptor, cacheStrategy.computeCacheKey(query));
    Cache cache = MapCache.create(1024 * 1024);
    CacheUtil.populate(cache, objectMapper, cacheKey, Iterables.transform(expectedResults, cacheStrategy.prepareForCache()));
    CachingQueryRunner runner = new CachingQueryRunner(segmentIdentifier, segmentDescriptor, objectMapper, cache, toolchest, // return an empty sequence since results should get pulled from cache
    new QueryRunner() {

        @Override
        public Sequence run(Query query, Map responseContext) {
            return Sequences.empty();
        }
    }, backgroundExecutorService, new CacheConfig() {

        @Override
        public boolean isPopulateCache() {
            return true;
        }

        @Override
        public boolean isUseCache() {
            return true;
        }
    });
    HashMap<String, Object> context = new HashMap<String, Object>();
    List<Result> results = Sequences.toList(runner.run(query, context), new ArrayList());
    Assert.assertEquals(expectedResults.toString(), results.toString());
}

Example 35 with Sequence

use of io.druid.java.util.common.guava.Sequence in project druid by druid-io.

the class DirectDruidClientTest method testQueryInterruptionExceptionLogMessage.

@Test
public void testQueryInterruptionExceptionLogMessage() throws JsonProcessingException {
    HttpClient httpClient = EasyMock.createMock(HttpClient.class);
    SettableFuture<Object> interruptionFuture = SettableFuture.create();
    Capture<Request> capturedRequest = EasyMock.newCapture();
    String hostName = "localhost:8080";
    EasyMock.expect(httpClient.go(EasyMock.capture(capturedRequest), EasyMock.<HttpResponseHandler>anyObject())).andReturn(interruptionFuture).anyTimes();
    EasyMock.replay(httpClient);
    DataSegment dataSegment = new DataSegment("test", new Interval("2013-01-01/2013-01-02"), new DateTime("2013-01-01").toString(), Maps.<String, Object>newHashMap(), Lists.<String>newArrayList(), Lists.<String>newArrayList(), NoneShardSpec.instance(), 0, 0L);
    final ServerSelector serverSelector = new ServerSelector(dataSegment, new HighestPriorityTierSelectorStrategy(new ConnectionCountServerSelectorStrategy()));
    DirectDruidClient client1 = new DirectDruidClient(new ReflectionQueryToolChestWarehouse(), QueryRunnerTestHelper.NOOP_QUERYWATCHER, new DefaultObjectMapper(), httpClient, hostName, new NoopServiceEmitter());
    QueryableDruidServer queryableDruidServer = new QueryableDruidServer(new DruidServer("test1", hostName, 0, "historical", DruidServer.DEFAULT_TIER, 0), client1);
    serverSelector.addServerAndUpdateSegment(queryableDruidServer, dataSegment);
    TimeBoundaryQuery query = Druids.newTimeBoundaryQueryBuilder().dataSource("test").build();
    HashMap<String, List> context = Maps.newHashMap();
    interruptionFuture.set(new ByteArrayInputStream("{\"error\":\"testing1\",\"errorMessage\":\"testing2\"}".getBytes()));
    Sequence results = client1.run(query, context);
    QueryInterruptedException actualException = null;
    try {
        Sequences.toList(results, Lists.newArrayList());
    } catch (QueryInterruptedException e) {
        actualException = e;
    }
    Assert.assertNotNull(actualException);
    Assert.assertEquals("testing1", actualException.getErrorCode());
    Assert.assertEquals("testing2", actualException.getMessage());
    Assert.assertEquals(hostName, actualException.getHost());
    EasyMock.verify(httpClient);
}