Examples with SCSequence io.questdb.mp.SCSequence used on opensource projects

Example 1 with SCSequence

use of io.questdb.mp.SCSequence in project questdb by bluestreak01.

the class IODispatcherTest method testTwoThreadsSendTwoThreadsRead.

@Test
public // dispatcher or Http parser.
void testTwoThreadsSendTwoThreadsRead() throws Exception {
    LOG.info().$("started testSendHttpGet").$();
    final String request = "GET /status?x=1&a=%26b&c&d=x HTTP/1.1\r\n" + "Host: localhost:9000\r\n" + "Connection: keep-alive\r\n" + "Cache-Control: max-age=0\r\n" + "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8\r\n" + "User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.48 Safari/537.36\r\n" + "Accept-Encoding: gzip,deflate,sdch\r\n" + "Accept-Language: en-US,en;q=0.8\r\n" + "Cookie: textwrapon=false; textautoformat=false; wysiwyg=textarea\r\n" + "\r\n";
    // the difference between request and expected is url encoding (and ':' padding, which can easily be fixed)
    final String expected = "GET /status?x=1&a=&b&c&d=x HTTP/1.1\r\n" + "host:localhost:9000\r\n" + "connection:keep-alive\r\n" + "cache-control:max-age=0\r\n" + "accept:text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8\r\n" + "user-agent:Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.48 Safari/537.36\r\n" + "accept-encoding:gzip,deflate,sdch\r\n" + "accept-language:en-US,en;q=0.8\r\n" + "cookie:textwrapon=false; textautoformat=false; wysiwyg=textarea\r\n" + "\r\n";
    final int N = 100;
    final int serverThreadCount = 2;
    final int senderCount = 2;
    assertMemoryLeak(() -> {
        HttpServerConfiguration httpServerConfiguration = new DefaultHttpServerConfiguration();
        final NetworkFacade nf = NetworkFacadeImpl.INSTANCE;
        final AtomicInteger requestsReceived = new AtomicInteger();
        final AtomicBoolean finished = new AtomicBoolean(false);
        final SOCountDownLatch senderHalt = new SOCountDownLatch(senderCount);
        try (IODispatcher<HttpConnectionContext> dispatcher = IODispatchers.create(new DefaultIODispatcherConfiguration(), (fd, dispatcher1) -> new HttpConnectionContext(httpServerConfiguration.getHttpContextConfiguration()).of(fd, dispatcher1))) {
            // server will publish status of each request to this queue
            final RingQueue<Status> queue = new RingQueue<>(Status::new, 1024);
            final MPSequence pubSeq = new MPSequence(queue.getCycle());
            SCSequence subSeq = new SCSequence();
            pubSeq.then(subSeq).then(pubSeq);
            final AtomicBoolean serverRunning = new AtomicBoolean(true);
            final SOCountDownLatch serverHaltLatch = new SOCountDownLatch(serverThreadCount);
            try {
                for (int j = 0; j < serverThreadCount; j++) {
                    new Thread(() -> {
                        final StringSink sink = new StringSink();
                        final long responseBuf = Unsafe.malloc(32, MemoryTag.NATIVE_DEFAULT);
                        Unsafe.getUnsafe().putByte(responseBuf, (byte) 'A');
                        final HttpRequestProcessor processor = new HttpRequestProcessor() {

                            @Override
                            public void onHeadersReady(HttpConnectionContext context) {
                                HttpRequestHeader headers = context.getRequestHeader();
                                sink.clear();
                                sink.put(headers.getMethodLine());
                                sink.put("\r\n");
                                ObjList<CharSequence> headerNames = headers.getHeaderNames();
                                for (int i = 0, n = headerNames.size(); i < n; i++) {
                                    sink.put(headerNames.getQuick(i)).put(':');
                                    sink.put(headers.getHeader(headerNames.getQuick(i)));
                                    sink.put("\r\n");
                                }
                                sink.put("\r\n");
                                boolean result;
                                try {
                                    TestUtils.assertEquals(expected, sink);
                                    result = true;
                                } catch (Exception e) {
                                    result = false;
                                }
                                while (true) {
                                    long cursor = pubSeq.next();
                                    if (cursor < 0) {
                                        continue;
                                    }
                                    queue.get(cursor).valid = result;
                                    pubSeq.done(cursor);
                                    break;
                                }
                                requestsReceived.incrementAndGet();
                                nf.send(context.getFd(), responseBuf, 1);
                            }
                        };
                        HttpRequestProcessorSelector selector = new HttpRequestProcessorSelector() {

                            @Override
                            public HttpRequestProcessor select(CharSequence url) {
                                return null;
                            }

                            @Override
                            public HttpRequestProcessor getDefaultProcessor() {
                                return processor;
                            }

                            @Override
                            public void close() {
                            }
                        };
                        while (serverRunning.get()) {
                            dispatcher.run(0);
                            dispatcher.processIOQueue((operation, context) -> context.handleClientOperation(operation, selector, EmptyRescheduleContext));
                        }
                        Unsafe.free(responseBuf, 32, MemoryTag.NATIVE_DEFAULT);
                        serverHaltLatch.countDown();
                    }).start();
                }
                AtomicInteger completedCount = new AtomicInteger();
                for (int j = 0; j < senderCount; j++) {
                    int k = j;
                    new Thread(() -> {
                        long sockAddr = Net.sockaddr("127.0.0.1", 9001);
                        try {
                            for (int i = 0; i < N && !finished.get(); i++) {
                                long fd = Net.socketTcp(true);
                                try {
                                    TestUtils.assertConnect(fd, sockAddr);
                                    int len = request.length();
                                    long buffer = TestUtils.toMemory(request);
                                    try {
                                        Assert.assertEquals(len, Net.send(fd, buffer, len));
                                        Assert.assertEquals("fd=" + fd + ", i=" + i, 1, Net.recv(fd, buffer, 1));
                                        LOG.info().$("i=").$(i).$(", j=").$(k).$();
                                        Assert.assertEquals('A', Unsafe.getUnsafe().getByte(buffer));
                                    } finally {
                                        Unsafe.free(buffer, len, MemoryTag.NATIVE_DEFAULT);
                                    }
                                } finally {
                                    Net.close(fd);
                                }
                            }
                        } finally {
                            completedCount.incrementAndGet();
                            Net.freeSockAddr(sockAddr);
                            senderHalt.countDown();
                        }
                    }).start();
                }
                int receiveCount = 0;
                while (receiveCount < N * senderCount) {
                    long cursor = subSeq.next();
                    if (cursor < 0) {
                        if (cursor == -1 && completedCount.get() == senderCount) {
                            Assert.fail("Not all requests successful, test failed, see previous failures");
                            break;
                        }
                        Thread.yield();
                        continue;
                    }
                    boolean valid = queue.get(cursor).valid;
                    subSeq.done(cursor);
                    Assert.assertTrue(valid);
                    receiveCount++;
                }
            } catch (Throwable e) {
                e.printStackTrace();
                throw e;
            } finally {
                serverRunning.set(false);
                serverHaltLatch.await();
            }
        } catch (Throwable e) {
            e.printStackTrace();
            throw e;
        } finally {
            finished.set(true);
            senderHalt.await();
        }
        Assert.assertEquals(N * senderCount, requestsReceived.get());
    });
}

Example 2 with SCSequence

use of io.questdb.mp.SCSequence in project questdb by bluestreak01.

the class LogFactoryTest method testRollingFileWriterBySize.

@Test
public void testRollingFileWriterBySize() throws Exception {
    String base = temp.getRoot().getAbsolutePath() + Files.SEPARATOR;
    String logFile = base + "mylog-${date:yyyy-MM-dd}.log";
    String expectedLogFile = base + "mylog-2015-05-03.log";
    final MicrosecondClock clock = new TestMicrosecondClock(TimestampFormatUtils.parseTimestamp("2015-05-03T10:35:00.000Z"), 1);
    try (Path path = new Path()) {
        // create rogue file that would be in a way of logger rolling existing files
        path.of(base);
        Assert.assertTrue(Files.touch(path.concat("mylog-2015-05-03.log.2").$()));
    }
    RingQueue<LogRecordSink> queue = new RingQueue<>(LogRecordSink::new, 1024, 1024, MemoryTag.NATIVE_DEFAULT);
    SPSequence pubSeq = new SPSequence(queue.getCycle());
    SCSequence subSeq = new SCSequence();
    pubSeq.then(subSeq).then(pubSeq);
    try (final LogRollingFileWriter writer = new LogRollingFileWriter(FilesFacadeImpl.INSTANCE, clock, queue, subSeq, LogLevel.LOG_LEVEL_INFO)) {
        writer.setLocation(logFile);
        writer.setRollSize("1m");
        writer.setBufferSize("64k");
        writer.bindProperties();
        AtomicBoolean running = new AtomicBoolean(true);
        SOCountDownLatch halted = new SOCountDownLatch();
        halted.setCount(1);
        new Thread(() -> {
            while (running.get()) {
                writer.runSerially();
            }
            // noinspection StatementWithEmptyBody
            while (writer.runSerially()) ;
            halted.countDown();
        }).start();
        // now publish
        int published = 0;
        int toPublish = 100_000;
        while (published < toPublish) {
            long cursor = pubSeq.next();
            if (cursor < 0) {
                LockSupport.parkNanos(1);
                continue;
            }
            final long available = pubSeq.available();
            while (cursor < available && published < toPublish) {
                LogRecordSink sink = queue.get(cursor++);
                sink.setLevel(LogLevel.LOG_LEVEL_INFO);
                sink.put("test");
                published++;
            }
            pubSeq.done(cursor - 1);
        }
        running.set(false);
        halted.await();
    }
    assertFileLength(expectedLogFile);
    assertFileLength(expectedLogFile + ".1");
}

Example 3 with SCSequence

use of io.questdb.mp.SCSequence in project questdb by bluestreak01.

the class SymbolCacheTest method testConcurrency.

@Test
public void testConcurrency() throws Exception {
    assertMemoryLeak(() -> {
        final Rnd rndCache = new Rnd();
        final int N = 1_000_000;
        long ts = TimestampFormatUtils.parseTimestamp("2020-09-10T20:00:00.000000Z");
        final long incrementUs = 10000;
        final String constValue = "hello";
        compiler.compile("create table x(a symbol, c int, b symbol capacity 10000000, ts timestamp) timestamp(ts) partition by DAY", sqlExecutionContext);
        try (SymbolCache symbolCache = new SymbolCache(new DefaultLineTcpReceiverConfiguration());
            Path path = new Path()) {
            path.of(configuration.getRoot()).concat("x");
            symbolCache.of(configuration, path, "b", 1);
            final CyclicBarrier barrier = new CyclicBarrier(2);
            final SOCountDownLatch haltLatch = new SOCountDownLatch(1);
            final AtomicBoolean cacheInError = new AtomicBoolean(false);
            RingQueue<Holder> wheel = new RingQueue<Holder>(Holder::new, 256);
            SPSequence pubSeq = new SPSequence(wheel.getCycle());
            SCSequence subSeq = new SCSequence();
            pubSeq.then(subSeq).then(pubSeq);
            new Thread(() -> {
                try {
                    barrier.await();
                    for (int i = 0; i < N; i++) {
                        // All keys should not be found, but we keep looking them up because
                        // we pretend we don't know this upfront. The aim is to cause
                        // race condition between lookup and table writer
                        final CharSequence value2 = rndCache.nextString(5);
                        symbolCache.getSymbolKey(constValue);
                        symbolCache.getSymbolKey(value2);
                        final long cursor = pubSeq.nextBully();
                        final Holder h = wheel.get(cursor);
                        // publish the value2 to the table writer
                        h.value1 = constValue;
                        h.value2 = Chars.toString(value2);
                        pubSeq.done(cursor);
                    }
                } catch (Throwable e) {
                    cacheInError.set(true);
                    e.printStackTrace();
                } finally {
                    haltLatch.countDown();
                }
            }).start();
            try (TableWriter w = engine.getWriter(sqlExecutionContext.getCairoSecurityContext(), "x", "test")) {
                barrier.await();
                OUT: for (int i = 0; i < N; i++) {
                    long cursor;
                    while (true) {
                        cursor = subSeq.next();
                        if (cursor < 0) {
                            // due to random generator producing duplicate strings
                            if (haltLatch.getCount() < 1) {
                                break OUT;
                            }
                        } else {
                            break;
                        }
                    }
                    Holder h = wheel.get(cursor);
                    TableWriter.Row r = w.newRow(ts);
                    r.putSym(0, h.value1);
                    r.putInt(1, 0);
                    r.putSym(2, h.value2);
                    r.append();
                    subSeq.done(cursor);
                    if (i % 256 == 0) {
                        w.commit();
                    }
                    ts += incrementUs;
                }
                w.commit();
            } finally {
                haltLatch.await();
            }
            Assert.assertFalse(cacheInError.get());
        }
        compiler.compile("drop table x", sqlExecutionContext);
    });
}