Examples with Concourse com.cinchapi.concourse.Concourse used on opensource projects

Example 11 with Concourse

use of com.cinchapi.concourse.Concourse in project concourse by cinchapi.

the class CON669 method testConsistencyOfWideReadsWithConcurrentWrites.

@Test
public void testConsistencyOfWideReadsWithConcurrentWrites() throws Exception {
    int threads = 10;
    ConnectionPool connections = ConnectionPool.newCachedConnectionPool(SERVER_HOST, SERVER_PORT, "admin", "admin");
    try {
        client.set("count", 1L, 1);
        AtomicBoolean done = new AtomicBoolean(false);
        AtomicBoolean passed = new AtomicBoolean(true);
        Thread reader = new Thread(() -> {
            while (!done.get()) {
                Concourse con = connections.request();
                try {
                    Assert.assertFalse(con.select(1).get("count").isEmpty());
                } catch (Exception e) {
                    e.printStackTrace();
                    passed.set(false);
                } finally {
                    connections.release(con);
                }
            }
        });
        reader.start();
        for (int i = 0; i < threads; ++i) {
            Thread t = new Thread(() -> {
                while (!done.get()) {
                    Concourse con = connections.request();
                    try {
                        long expected = (long) con.select(1).get("count").iterator().next();
                        con.verifyAndSwap("count", expected, 1, Time.now());
                    } catch (Exception e) {
                        e.printStackTrace();
                        passed.set(false);
                    } finally {
                        connections.release(con);
                    }
                }
            });
            t.start();
        }
        Threads.sleep(3000);
        done.set(true);
        Assert.assertTrue(passed.get());
    } finally {
        while (!connections.isClosed()) {
            try {
                connections.close();
            } catch (IllegalStateException e) {
                Threads.sleep(100);
            }
        }
    }
}

Example 12 with Concourse

use of com.cinchapi.concourse.Concourse in project concourse by cinchapi.

the class CON669 method testConcurrentAtomicWritesToDifferentKeysInRecord.

@Test
public void testConcurrentAtomicWritesToDifferentKeysInRecord() {
    Concourse client2 = Concourse.copyExistingConnection(client);
    try {
        client.stage();
        client.add("a", "a", 1);
        client2.stage();
        client2.add("b", "b", 1);
        Assert.assertTrue(client.commit());
        Assert.assertTrue(client2.commit());
    } finally {
        client2.exit();
    }
}

Example 13 with Concourse

use of com.cinchapi.concourse.Concourse in project concourse by cinchapi.

the class ConcourseServerTest method testGetEngineRaceCondition.

@Test
public void testGetEngineRaceCondition() throws TException, InterruptedException {
    // CON-673
    int port = Networking.getOpenPort();
    String env = "test";
    String buffer = TestData.getTemporaryTestDir();
    String db = TestData.getTemporaryTestDir();
    server = ConcourseServer.create(port, buffer, db);
    server.spawn();
    try {
        AccessToken token = server.login(ByteBuffers.fromUtf8String("admin"), ByteBuffers.fromUtf8String("admin"), env);
        for (int i = 0; i < 10000; ++i) {
            server.addKeyValue(TestData.getSimpleString(), TestData.getTObject(), token, null, env);
        }
        server.stop();
        server = ConcourseServer.create(port, buffer, db);
        server.spawn();
        int threads = 20;
        CountDownLatch latch = new CountDownLatch(threads);
        for (int i = 0; i < threads; ++i) {
            Thread t = new Thread(() -> {
                Concourse client = Concourse.at().port(port).environment(env).connect();
                client.exit();
                latch.countDown();
            });
            t.start();
        }
        latch.await();
        Assert.assertEquals(2, server.numEnginesInitialized.get());
    } finally {
        server.stop();
    }
}

Example 14 with Concourse

use of com.cinchapi.concourse.Concourse in project concourse by cinchapi.

the class ConcourseAccount method debit.

@Override
public boolean debit(String charge, double amount) {
    Preconditions.checkArgument(amount > 0);
    Concourse concourse = Constants.CONCOURSE_CONNECTIONS.request();
    try {
        concourse.stage();
        if (withdrawImpl(concourse, amount)) {
            // By using the #add method, we can store multiple charges in
            // the record at the same time
            concourse.add("charges", charge, id);
            return concourse.commit();
        } else {
            concourse.abort();
            return false;
        }
    } catch (TransactionException e) {
        concourse.abort();
        return false;
    } finally {
        Constants.CONCOURSE_CONNECTIONS.release(concourse);
    }
}

Example 15 with Concourse

use of com.cinchapi.concourse.Concourse in project concourse by cinchapi.

the class ConcourseAccount method deposit.

@Override
public boolean deposit(double amount) {
    Preconditions.checkArgument(amount > 0);
    // This implementation uses verifyAndSwap to atomically increment the
    // account balance (without a using a transaction!) which ensures that
    // money isn't lost if two people make a deposit at the same time.
    Concourse concourse = Constants.CONCOURSE_CONNECTIONS.request();
    try {
        boolean incremented = false;
        while (!incremented) {
            double balance = concourse.get("balance", id);
            double newBalance = balance + amount;
            if (concourse.verifyAndSwap("balance", balance, id, newBalance)) {
                incremented = true;
            } else {
                // initial read. If that happens, we simply retry
                continue;
            }
        }
        return true;
    } finally {
        Constants.CONCOURSE_CONNECTIONS.release(concourse);
    }
}