Examples with JdbcCacheGenerator org.apache.druid.server.lookup.namespace.JdbcCacheGenerator used on opensource projects

Example 1 with JdbcCacheGenerator

use of org.apache.druid.server.lookup.namespace.JdbcCacheGenerator in project druid by druid-io.

the class JdbcExtractionNamespaceTest method setup.

@Before
public void setup() throws Exception {
    lifecycle = new Lifecycle();
    updates = new AtomicLong(0L);
    updateLock = new ReentrantLock(true);
    closer = Closer.create();
    setupTeardownService = MoreExecutors.listeningDecorator(Execs.multiThreaded(2, "JDBCExtractionNamespaceTeardown--%s"));
    final ListenableFuture<Handle> setupFuture = setupTeardownService.submit(new Callable<Handle>() {

        @Override
        public Handle call() {
            final Handle handle = derbyConnectorRule.getConnector().getDBI().open();
            Assert.assertEquals(0, handle.createStatement(StringUtils.format("CREATE TABLE %s (%s TIMESTAMP, %s VARCHAR(64), %s VARCHAR(64), %s VARCHAR(64))", TABLE_NAME, TS_COLUMN, FILTER_COLUMN, KEY_NAME, VAL_NAME)).setQueryTimeout(1).execute());
            handle.createStatement(StringUtils.format("TRUNCATE TABLE %s", TABLE_NAME)).setQueryTimeout(1).execute();
            handle.commit();
            closer.register(new Closeable() {

                @Override
                public void close() throws IOException {
                    handle.createStatement("DROP TABLE " + TABLE_NAME).setQueryTimeout(1).execute();
                    final ListenableFuture future = setupTeardownService.submit(new Runnable() {

                        @Override
                        public void run() {
                            handle.close();
                        }
                    });
                    try (Closeable closeable = new Closeable() {

                        @Override
                        public void close() {
                            future.cancel(true);
                        }
                    }) {
                        future.get(10, TimeUnit.SECONDS);
                    } catch (InterruptedException | ExecutionException | TimeoutException e) {
                        throw new IOException("Error closing handle", e);
                    }
                }
            });
            closer.register(new Closeable() {

                @Override
                public void close() {
                    if (scheduler == null) {
                        return;
                    }
                    Assert.assertEquals(0, scheduler.getActiveEntries());
                }
            });
            for (Map.Entry<String, String[]> entry : RENAMES.entrySet()) {
                try {
                    String key = entry.getKey();
                    String value = entry.getValue()[0];
                    String filter = entry.getValue()[1];
                    insertValues(handle, key, value, filter, "2015-01-01 00:00:00");
                } catch (InterruptedException e) {
                    Thread.currentThread().interrupt();
                    throw new RuntimeException(e);
                }
            }
            NoopServiceEmitter noopServiceEmitter = new NoopServiceEmitter();
            scheduler = new CacheScheduler(noopServiceEmitter, ImmutableMap.of(JdbcExtractionNamespace.class, new CacheGenerator<JdbcExtractionNamespace>() {

                private final JdbcCacheGenerator delegate = new JdbcCacheGenerator();

                @Override
                public CacheScheduler.VersionedCache generateCache(final JdbcExtractionNamespace namespace, final CacheScheduler.EntryImpl<JdbcExtractionNamespace> id, final String lastVersion, final CacheScheduler scheduler) throws InterruptedException {
                    updateLock.lockInterruptibly();
                    try {
                        log.debug("Running cache generator");
                        try {
                            return delegate.generateCache(namespace, id, lastVersion, scheduler);
                        } finally {
                            updates.incrementAndGet();
                        }
                    } finally {
                        updateLock.unlock();
                    }
                }
            }), new OnHeapNamespaceExtractionCacheManager(lifecycle, noopServiceEmitter, new NamespaceExtractionConfig()));
            try {
                lifecycle.start();
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
            closer.register(new Closeable() {

                @Override
                public void close() throws IOException {
                    final ListenableFuture future = setupTeardownService.submit(new Runnable() {

                        @Override
                        public void run() {
                            lifecycle.stop();
                        }
                    });
                    try (final Closeable closeable = new Closeable() {

                        @Override
                        public void close() {
                            future.cancel(true);
                        }
                    }) {
                        future.get(30, TimeUnit.SECONDS);
                    } catch (InterruptedException | ExecutionException | TimeoutException e) {
                        throw new IOException("Error stopping lifecycle", e);
                    }
                }
            });
            return handle;
        }
    });
    try (final Closeable ignore = () -> setupFuture.cancel(true)) {
        handleRef = setupFuture.get(10, TimeUnit.SECONDS);
    }
    Assert.assertNotNull(handleRef);
}