Examples with Promise org.nustaq.kontraktor.Promise used on opensource projects

Example 36 with Promise

use of org.nustaq.kontraktor.Promise in project kontraktor by RuedigerMoeller.

the class RxJava method remotingTest.

@Test
public void remotingTest() {
    Observable<Integer> range = Observable.range(0, NUM_MSG / 4);
    Publisher<Integer> pub = RxReactiveStreams.toPublisher(range);
    KxReactiveStreams.get().asKxPublisher(pub).serve(new TCPNIOPublisher().port(3456));
    RateMeasure rm = new RateMeasure("events");
    AtomicInteger cnt = new AtomicInteger(0);
    Promise<Integer> finished = new Promise<>();
    KxReactiveStreams.get().connect(Integer.class, new TCPConnectable().host("localhost").port(3456)).subscribe((r, e) -> {
        rm.count();
        if (Actors.isResult(e))
            cnt.incrementAndGet();
        else
            finished.resolve(cnt.get());
    });
    Assert.assertTrue(finished.await(50000) == NUM_MSG / 4);
}

Example 37 with Promise

use of org.nustaq.kontraktor.Promise in project kontraktor by RuedigerMoeller.

the class TableSpaceSharding method createOrLoadTable.

@Override
public IPromise<RealLiveTable> createOrLoadTable(TableDescription desc) {
    Promise<RealLiveTable> res = new Promise();
    ArrayList<IPromise<RealLiveTable>> results = new ArrayList();
    for (int i = 0; i < shards.length; i++) {
        TableSpaceActor shard = shards[i];
        IPromise<RealLiveTable> table = shard.createOrLoadTable(desc.clone().shardNo(i));
        Promise p = new Promise();
        results.add(p);
        final int finalI = i;
        table.then((r, e) -> {
            if (e == null)
                Log.Info(this, "table creation: " + desc.getName() + " " + finalI);
            else if (e instanceof Throwable)
                Log.Info(this, (Throwable) e, "failed table creation: " + desc.getName() + " " + finalI);
            else
                Log.Info(this, "failed table creation: " + desc.getName() + " " + finalI + " " + e);
            p.complete(r, e);
        });
    }
    List<IPromise<RealLiveTable>> tables = Actors.all(results).await();
    RealLiveTable[] tableShards = new RealLiveTable[tables.size()];
    boolean errors = false;
    for (int i = 0; i < tables.size(); i++) {
        if (tables.get(i).get() == null) {
            res.reject(tables.get(i).getError());
            errors = true;
            break;
        } else {
            // tables[i].get().shardNo();
            int sno = i;
            if (tableShards[sno] != null) {
                res.reject("shard " + sno + " is present more than once");
                errors = true;
                break;
            }
            tableShards[sno] = tables.get(i).get();
        }
    }
    if (!errors) {
        TableSharding ts = new TableSharding(func, tableShards, desc);
        tableMap.put(desc.getName(), ts);
        tableDescriptionMap.put(desc.getName(), desc);
        res.resolve(ts);
    }
    return res;
}

Example 38 with Promise

use of org.nustaq.kontraktor.Promise in project kontraktor by RuedigerMoeller.

the class ProcessStarter method terminateProcess.

public IPromise<Integer> terminateProcess(String procid, boolean force, int timeoutSec) {
    ProcessInfo processInfo = processes.get(procid);
    if (processInfo == null)
        return resolve(null);
    if (processInfo.getProc() == null) {
        StarterDesc sd = siblings.get(processInfo.getStarterId());
        if (sd != null)
            return sd.getRemoteRef().terminateProcess(procid, force, timeoutSec);
        else
            return reject("unknown starter:" + processInfo.getStarterId());
    }
    long pid = -1;
    try {
        Field f = processInfo.getProc().getClass().getDeclaredField("pid");
        f.setAccessible(true);
        pid = f.getLong(processInfo.getProc());
    } catch (NoSuchFieldException e) {
        e.printStackTrace();
    } catch (IllegalAccessException e) {
        e.printStackTrace();
    }
    if (pid != -1) {
        try {
            Process kl = Runtime.getRuntime().exec("kill -9 " + pid);
            kl.waitFor(timeoutSec, TimeUnit.SECONDS);
            self().distribute(TERMINATED, processInfo, null);
            return resolve(new Integer(kl.exitValue()));
        } catch (IOException e) {
            e.printStackTrace();
            return reject(e);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    } else {
        if (force)
            processInfo.getProc().destroyForcibly();
        else
            processInfo.getProc().destroy();
    }
    Promise res = new Promise();
    final Process proc = processInfo.getProc();
    execInThreadPool(() -> {
        proc.waitFor(timeoutSec, TimeUnit.SECONDS);
        if (proc.isAlive()) {
            res.reject("timeout");
        } else {
            processes.remove(processInfo.getId());
            self().distribute(TERMINATED, processInfo, null);
            res.resolve(proc.exitValue());
        }
        return null;
    });
    return res;
}

Example 39 with Promise

use of org.nustaq.kontraktor.Promise in project kontraktor by RuedigerMoeller.

the class ReactApp method getDirectRequestResponse.

@Override
protected IPromise<String> getDirectRequestResponse(String path) {
    String[] split = path.split("/");
    if (split.length == 0)
        return resolve("<html>Invalid Link</html>");
    Promise res = new Promise();
    sessionStorage.takeToken(split[split.length - 1], false).then((token, err) -> {
        if (token != null) {
            res.resolve("<html>User confirmed: '" + token.getUserId() + "' data:" + token.getData() + "</html>");
            // lets increment a count for that
            // note: not atomic
            sessionStorage.getUser(token.getUserId()).then(record -> {
                // increment
                record.put("count", record.getInt("count") + 1);
                // save
                sessionStorage.putUser(record);
                // session cached record is stale now => update
                // this is a bad example, should use events instead and ofc
                // default session storage is not a database replacement
                sessions.values().stream().filter(sess -> sess.getUserKey().equals(token.getUserId())).forEach(sess -> ((ReactAppSession) sess).updateUserRecord(record));
            });
        } else
            res.reject("<html>Expired or invalid Link</html>");
    });
    return res;
}

Example 40 with Promise

use of org.nustaq.kontraktor.Promise in project kontraktor by RuedigerMoeller.

the class StatelessService method getTime.

@Override
public IPromise<Long> getTime(long delay) {
    Promise p = promise();
    long now = System.currentTimeMillis();
    delayed(delay, () -> {
        measure.count();
        p.resolve(now);
    });
    return p;
}