Examples with GenericInputDescriptor org.apache.samza.system.descriptors.GenericInputDescriptor used on opensource projects

Example 31 with GenericInputDescriptor

use of org.apache.samza.system.descriptors.GenericInputDescriptor in project samza by apache.

the class TestJobGraphJsonGenerator method testRepartitionedJoinStreamApplication.

@Test
public void testRepartitionedJoinStreamApplication() throws Exception {
    /**
     * the graph looks like the following.
     * number in parentheses () indicates number of stream partitions.
     * number in parentheses in quotes ("") indicates expected partition count.
     * number in square brackets [] indicates operator ID.
     *
     * input3 (32) -> filter [7] -> partitionBy [8] ("64") -> map [10] -> join [14] -> sendTo(output2) [15] (16)
     *                                                                   |
     *              input2 (16) -> partitionBy [3] ("64") -> filter [5] -| -> sink [13]
     *                                                                   |
     *                                         input1 (64) -> map [1] -> join [11] -> sendTo(output1) [12] (8)
     */
    Map<String, String> configMap = new HashMap<>();
    configMap.put(JobConfig.JOB_NAME, "test-app");
    configMap.put(JobConfig.JOB_DEFAULT_SYSTEM, "test-system");
    StreamTestUtils.addStreamConfigs(configMap, "input1", "system1", "input1");
    StreamTestUtils.addStreamConfigs(configMap, "input2", "system2", "input2");
    StreamTestUtils.addStreamConfigs(configMap, "input3", "system2", "input3");
    StreamTestUtils.addStreamConfigs(configMap, "output1", "system1", "output1");
    StreamTestUtils.addStreamConfigs(configMap, "output2", "system2", "output2");
    Config config = new MapConfig(configMap);
    // set up external partition count
    Map<String, Integer> system1Map = new HashMap<>();
    system1Map.put("input1", 64);
    system1Map.put("output1", 8);
    Map<String, Integer> system2Map = new HashMap<>();
    system2Map.put("input2", 16);
    system2Map.put("input3", 32);
    system2Map.put("output2", 16);
    SystemAdmin systemAdmin1 = createSystemAdmin(system1Map);
    SystemAdmin systemAdmin2 = createSystemAdmin(system2Map);
    SystemAdmins systemAdmins = mock(SystemAdmins.class);
    when(systemAdmins.getSystemAdmin("system1")).thenReturn(systemAdmin1);
    when(systemAdmins.getSystemAdmin("system2")).thenReturn(systemAdmin2);
    StreamManager streamManager = new StreamManager(systemAdmins);
    StreamApplicationDescriptorImpl graphSpec = new StreamApplicationDescriptorImpl(appDesc -> {
        KVSerde<Object, Object> kvSerde = new KVSerde<>(new NoOpSerde(), new NoOpSerde());
        String mockSystemFactoryClass = "factory.class.name";
        GenericSystemDescriptor system1 = new GenericSystemDescriptor("system1", mockSystemFactoryClass);
        GenericSystemDescriptor system2 = new GenericSystemDescriptor("system2", mockSystemFactoryClass);
        GenericInputDescriptor<KV<Object, Object>> input1Descriptor = system1.getInputDescriptor("input1", kvSerde);
        GenericInputDescriptor<KV<Object, Object>> input2Descriptor = system2.getInputDescriptor("input2", kvSerde);
        GenericInputDescriptor<KV<Object, Object>> input3Descriptor = system2.getInputDescriptor("input3", kvSerde);
        GenericOutputDescriptor<KV<Object, Object>> output1Descriptor = system1.getOutputDescriptor("output1", kvSerde);
        GenericOutputDescriptor<KV<Object, Object>> output2Descriptor = system2.getOutputDescriptor("output2", kvSerde);
        MessageStream<KV<Object, Object>> messageStream1 = appDesc.getInputStream(input1Descriptor).map(m -> m);
        MessageStream<KV<Object, Object>> messageStream2 = appDesc.getInputStream(input2Descriptor).partitionBy(m -> m.key, m -> m.value, mock(KVSerde.class), "p1").filter(m -> true);
        MessageStream<KV<Object, Object>> messageStream3 = appDesc.getInputStream(input3Descriptor).filter(m -> true).partitionBy(m -> m.key, m -> m.value, mock(KVSerde.class), "p2").map(m -> m);
        OutputStream<KV<Object, Object>> outputStream1 = appDesc.getOutputStream(output1Descriptor);
        OutputStream<KV<Object, Object>> outputStream2 = appDesc.getOutputStream(output2Descriptor);
        messageStream1.join(messageStream2, (JoinFunction<Object, KV<Object, Object>, KV<Object, Object>, KV<Object, Object>>) mock(JoinFunction.class), mock(Serde.class), mock(Serde.class), mock(Serde.class), Duration.ofHours(2), "j1").sendTo(outputStream1);
        messageStream2.sink((message, collector, coordinator) -> {
        });
        messageStream3.join(messageStream2, (JoinFunction<Object, KV<Object, Object>, KV<Object, Object>, KV<Object, Object>>) mock(JoinFunction.class), mock(Serde.class), mock(Serde.class), mock(Serde.class), Duration.ofHours(1), "j2").sendTo(outputStream2);
    }, config);
    ExecutionPlanner planner = new ExecutionPlanner(config, streamManager);
    ExecutionPlan plan = planner.plan(graphSpec);
    String json = plan.getPlanAsJson();
    System.out.println(json);
    // deserialize
    ObjectMapper mapper = new ObjectMapper();
    JobGraphJsonGenerator.JobGraphJson nodes = mapper.readValue(json, JobGraphJsonGenerator.JobGraphJson.class);
    assertEquals(5, nodes.jobs.get(0).operatorGraph.inputStreams.size());
    assertEquals(11, nodes.jobs.get(0).operatorGraph.operators.size());
    assertEquals(3, nodes.sourceStreams.size());
    assertEquals(2, nodes.sinkStreams.size());
    assertEquals(2, nodes.intermediateStreams.size());
}