Examples with SegmentChangeRequestLoad org.apache.druid.server.coordination.SegmentChangeRequestLoad used on opensource projects

Example 1 with SegmentChangeRequestLoad

use of org.apache.druid.server.coordination.SegmentChangeRequestLoad in project druid by druid-io.

the class HttpServerInventoryViewTest method testSimple.

@Test(timeout = 60_000L)
public void testSimple() throws Exception {
    ObjectMapper jsonMapper = TestHelper.makeJsonMapper();
    TestDruidNodeDiscovery druidNodeDiscovery = new TestDruidNodeDiscovery();
    DruidNodeDiscoveryProvider druidNodeDiscoveryProvider = EasyMock.createMock(DruidNodeDiscoveryProvider.class);
    EasyMock.expect(druidNodeDiscoveryProvider.getForService(DataNodeService.DISCOVERY_SERVICE_KEY)).andReturn(druidNodeDiscovery);
    EasyMock.replay(druidNodeDiscoveryProvider);
    final DataSegment segment1 = new DataSegment("test1", Intervals.of("2014/2015"), "v1", null, null, null, null, 0, 0);
    final DataSegment segment2 = new DataSegment("test2", Intervals.of("2014/2015"), "v1", null, null, null, null, 0, 0);
    final DataSegment segment3 = new DataSegment("test3", Intervals.of("2014/2015"), "v1", null, null, null, null, 0, 0);
    final DataSegment segment4 = new DataSegment("test4", Intervals.of("2014/2015"), "v1", null, null, null, null, 0, 0);
    final DataSegment segment5 = new DataSegment("non-loading-datasource", Intervals.of("2014/2015"), "v1", null, null, null, null, 0, 0);
    TestHttpClient httpClient = new TestHttpClient(ImmutableList.of(Futures.immediateFuture(new ByteArrayInputStream(jsonMapper.writerWithType(HttpServerInventoryView.SEGMENT_LIST_RESP_TYPE_REF).writeValueAsBytes(new ChangeRequestsSnapshot(false, null, ChangeRequestHistory.Counter.ZERO, ImmutableList.of(new SegmentChangeRequestLoad(segment1)))))), Futures.immediateFuture(new ByteArrayInputStream(jsonMapper.writerWithType(HttpServerInventoryView.SEGMENT_LIST_RESP_TYPE_REF).writeValueAsBytes(new ChangeRequestsSnapshot(false, null, ChangeRequestHistory.Counter.ZERO, ImmutableList.of(new SegmentChangeRequestDrop(segment1), new SegmentChangeRequestLoad(segment2), new SegmentChangeRequestLoad(segment3)))))), Futures.immediateFuture(new ByteArrayInputStream(jsonMapper.writerWithType(HttpServerInventoryView.SEGMENT_LIST_RESP_TYPE_REF).writeValueAsBytes(new ChangeRequestsSnapshot(true, "force reset counter", ChangeRequestHistory.Counter.ZERO, ImmutableList.of())))), Futures.immediateFuture(new ByteArrayInputStream(jsonMapper.writerWithType(HttpServerInventoryView.SEGMENT_LIST_RESP_TYPE_REF).writeValueAsBytes(new ChangeRequestsSnapshot(false, null, ChangeRequestHistory.Counter.ZERO, ImmutableList.of(new SegmentChangeRequestLoad(segment3), new SegmentChangeRequestLoad(segment4), new SegmentChangeRequestLoad(segment5))))))));
    DiscoveryDruidNode druidNode = new DiscoveryDruidNode(new DruidNode("service", "host", false, 8080, null, true, false), NodeRole.HISTORICAL, ImmutableMap.of(DataNodeService.DISCOVERY_SERVICE_KEY, new DataNodeService("tier", 1000, ServerType.HISTORICAL, 0)));
    HttpServerInventoryView httpServerInventoryView = new HttpServerInventoryView(jsonMapper, httpClient, druidNodeDiscoveryProvider, (pair) -> !pair.rhs.getDataSource().equals("non-loading-datasource"), new HttpServerInventoryViewConfig(null, null, null), "test");
    CountDownLatch initializeCallback1 = new CountDownLatch(1);
    Map<SegmentId, CountDownLatch> segmentAddLathces = ImmutableMap.of(segment1.getId(), new CountDownLatch(1), segment2.getId(), new CountDownLatch(1), segment3.getId(), new CountDownLatch(1), segment4.getId(), new CountDownLatch(1));
    Map<SegmentId, CountDownLatch> segmentDropLatches = ImmutableMap.of(segment1.getId(), new CountDownLatch(1), segment2.getId(), new CountDownLatch(1));
    httpServerInventoryView.registerSegmentCallback(Execs.directExecutor(), new ServerView.SegmentCallback() {

        @Override
        public ServerView.CallbackAction segmentAdded(DruidServerMetadata server, DataSegment segment) {
            segmentAddLathces.get(segment.getId()).countDown();
            return ServerView.CallbackAction.CONTINUE;
        }

        @Override
        public ServerView.CallbackAction segmentRemoved(DruidServerMetadata server, DataSegment segment) {
            segmentDropLatches.get(segment.getId()).countDown();
            return ServerView.CallbackAction.CONTINUE;
        }

        @Override
        public ServerView.CallbackAction segmentViewInitialized() {
            initializeCallback1.countDown();
            return ServerView.CallbackAction.CONTINUE;
        }
    });
    final CountDownLatch serverRemovedCalled = new CountDownLatch(1);
    httpServerInventoryView.registerServerRemovedCallback(Execs.directExecutor(), new ServerView.ServerRemovedCallback() {

        @Override
        public ServerView.CallbackAction serverRemoved(DruidServer server) {
            if (server.getName().equals("host:8080")) {
                serverRemovedCalled.countDown();
                return ServerView.CallbackAction.CONTINUE;
            } else {
                throw new RE("Unknown server [%s]", server.getName());
            }
        }
    });
    httpServerInventoryView.start();
    druidNodeDiscovery.listener.nodesAdded(ImmutableList.of(druidNode));
    initializeCallback1.await();
    segmentAddLathces.get(segment1.getId()).await();
    segmentDropLatches.get(segment1.getId()).await();
    segmentAddLathces.get(segment2.getId()).await();
    segmentAddLathces.get(segment3.getId()).await();
    segmentAddLathces.get(segment4.getId()).await();
    segmentDropLatches.get(segment2.getId()).await();
    DruidServer druidServer = httpServerInventoryView.getInventoryValue("host:8080");
    Assert.assertEquals(ImmutableMap.of(segment3.getId(), segment3, segment4.getId(), segment4), Maps.uniqueIndex(druidServer.iterateAllSegments(), DataSegment::getId));
    druidNodeDiscovery.listener.nodesRemoved(ImmutableList.of(druidNode));
    serverRemovedCalled.await();
    Assert.assertNull(httpServerInventoryView.getInventoryValue("host:8080"));
    EasyMock.verify(druidNodeDiscoveryProvider);
    httpServerInventoryView.stop();
}