@Test public void testSpoutToBolt() throws Exception { Stream<Tuple> stream = streamBuilder.newStream(newSpout(Utils.DEFAULT_STREAM_ID)); stream.to(newBolt()); StormTopology topology = streamBuilder.build(); assertEquals(1, topology.get_spouts_size()); assertEquals(1, topology.get_bolts_size()); String spoutId = topology.get_spouts().keySet().iterator().next(); Map<GlobalStreamId, Grouping> expected = new HashMap<>(); expected.put(new GlobalStreamId(spoutId, "default"), Grouping.shuffle(new NullStruct())); assertEquals(expected, topology.get_bolts().values().iterator().next().get_common().get_inputs()); }
@Test public void testBranch() throws Exception { Stream<Tuple> stream = streamBuilder.newStream(newSpout(Utils.DEFAULT_STREAM_ID)); Stream<Tuple>[] streams = stream.branch(x -> true); StormTopology topology = streamBuilder.build(); assertEquals(1, topology.get_spouts_size()); assertEquals(1, topology.get_bolts_size()); Map<GlobalStreamId, Grouping> expected = new HashMap<>(); String spoutId = topology.get_spouts().keySet().iterator().next(); expected.put(new GlobalStreamId(spoutId, "default"), Grouping.shuffle(new NullStruct())); assertEquals(expected, topology.get_bolts().values().iterator().next().get_common().get_inputs()); assertEquals(1, streams.length); assertEquals(1, streams[0].node.getOutputStreams().size()); String parentStream = streams[0].node.getOutputStreams().iterator().next() + "-branch"; assertEquals(1, streams[0].node.getParents(parentStream).size()); Node processorNdoe = streams[0].node.getParents(parentStream).iterator().next(); assertTrue(processorNdoe instanceof ProcessorNode); assertTrue(((ProcessorNode) processorNdoe).getProcessor() instanceof BranchProcessor); assertTrue(processorNdoe.getParents("default").iterator().next() instanceof SpoutNode); }
@Test public void testRepartition() throws Exception { Stream<String> stream = streamBuilder.newStream(newSpout(Utils.DEFAULT_STREAM_ID), new ValueMapper<>(0)); stream.repartition(3).filter(x -> true).repartition(2).filter(x -> true).aggregate(new Count<>()); StormTopology topology = streamBuilder.build(); assertEquals(1, topology.get_spouts_size()); SpoutSpec spout = topology.get_spouts().get("spout1"); assertEquals(4, topology.get_bolts_size()); Bolt bolt1 = topology.get_bolts().get("bolt1"); Bolt bolt2 = topology.get_bolts().get("bolt2"); Bolt bolt3 = topology.get_bolts().get("bolt3"); Bolt bolt4 = topology.get_bolts().get("bolt4"); assertEquals(1, spout.get_common().get_parallelism_hint()); assertEquals(1, bolt1.get_common().get_parallelism_hint()); assertEquals(3, bolt2.get_common().get_parallelism_hint()); assertEquals(2, bolt3.get_common().get_parallelism_hint()); assertEquals(2, bolt4.get_common().get_parallelism_hint()); }