Example usage for com.google.common.util.concurrent Service state

Introduction

In this page you can find the example usage for com.google.common.util.concurrent Service state.

Prototype

State state();

Source Link

Document

Returns the lifecycle state of the service.

Usage

From source file:org.xtreemfs.foundation.flease.sim.FleaseSim.java

/**
 * @param args the command line arguments
 *//*from  ww w  .java  2 s . co m*/
public static void main(String[] args) {
    try {
        final int dmax = 500;
        final int leaseTimeout = 5000;

        final int numHosts = 10;
        final FleaseStage[] stages = new FleaseStage[numHosts];

        final boolean useME = true;

        TimeSync.initializeLocal(50);

        final Communicator com = new Communicator(10, 100, 30000, 5, true, 0.2, 0.05);
        if (com.startAndWait() != Service.State.RUNNING) {
            LOG.error("Unable to start communicator", com.failureCause());
            System.exit(2);
        }

        List<InetSocketAddress> allPorts = new ArrayList(numHosts);
        List<InetSocketAddress>[] acceptors = new List[numHosts];
        MasterEpochHandlerInterface[] meHandlers = new MasterEpochHandlerInterface[numHosts];
        final AtomicReference<Flease>[] leaseStates = new AtomicReference[numHosts];

        for (int i = 0; i < numHosts; i++) {
            final int portNo = 1024 + i;
            final int myI = i;
            FleaseConfig cfg = new FleaseConfig(leaseTimeout, dmax, 500, new InetSocketAddress(portNo),
                    "localhost:" + (1024 + i), 5, true, 0);
            leaseStates[i] = new AtomicReference<Flease>(Flease.EMPTY_LEASE);

            if (useME) {
                meHandlers[i] = new MasterEpochHandlerInterface() {
                    long me = 0;

                    public long getMasterEpoch() {
                        return me;
                    }

                    @Override
                    public void sendMasterEpoch(FleaseMessage response, Continuation callback) {
                        response.setMasterEpochNumber(me);
                        callback.processingFinished();
                    }

                    @Override
                    public void storeMasterEpoch(FleaseMessage request, Continuation callback) {
                        me = request.getMasterEpochNumber();
                        callback.processingFinished();
                    }
                };
            }

            stages[i] = new FleaseStage(cfg, "/tmp/xtreemfs-test", new FleaseMessageSenderInterface() {

                public void sendMessage(FleaseMessage message, InetSocketAddress recipient) {
                    assert (message != null);
                    LOG.debug("received message for delivery to port {}: {}", recipient.getPort(), message);
                    message.setSender(new InetSocketAddress("localhost", portNo));
                    com.send(recipient.getPort(), message);
                }
            }, true, new FleaseViewChangeListenerInterface() {

                public void viewIdChangeEvent(ASCIIString cellId, int viewId) {
                }
            }, new FleaseStatusListener() {

                public void statusChanged(ASCIIString cellId, Flease lease) {

                    synchronized (leaseStates) {
                        leaseStates[myI].set(lease);
                    }
                    System.out.println("state change for " + portNo + ": " + lease.getLeaseHolder() + "/"
                            + lease.getLeaseTimeout_ms());
                }

                public void leaseFailed(ASCIIString cellId, FleaseException error) {
                    System.out.println("lease failed: " + error);
                    synchronized (leaseStates) {
                        leaseStates[myI].set(Flease.EMPTY_LEASE);
                    }
                    //restart my cell
                }
            }, meHandlers[i]);
            stages[i].addListener(new Service.Listener() {
                @Override
                public void starting() {
                }

                @Override
                public void running() {
                }

                @Override
                public void stopping(Service.State from) {
                }

                @Override
                public void terminated(Service.State from) {
                }

                @Override
                public void failed(Service.State from, Throwable failure) {
                    LOG.error("Failed service, from state: {} with exception {}", from, failure);
                    System.exit(100);
                }
            }, MoreExecutors.sameThreadExecutor());
            stages[i].start();
            allPorts.add(new InetSocketAddress("localhost", 1024 + i));
            com.openPort(1024 + i, stages[i]);
        }

        for (int i = 0; i < numHosts; i++) {
            final int portNo = 1024 + i;
            acceptors[i] = new ArrayList(numHosts - 1);
            for (InetSocketAddress ia : allPorts) {
                if (ia.getPort() != portNo)
                    acceptors[i].add(ia);
            }
            stages[i].openCell(new ASCIIString("testcell"), acceptors[i], false);
        }

        //do something

        do {
            final AtomicBoolean sync = new AtomicBoolean();
            final AtomicReference<ASCIIString> ref = new AtomicReference();

            Thread.sleep(100);
            System.out.print("checking local states: ");
            ASCIIString leaseHolder = null;
            int leaseInstanceId = 0;

            synchronized (leaseStates) {
                for (int i = 0; i < numHosts; i++) {
                    if (!leaseStates[i].get().isEmptyLease()) {
                        if (leaseHolder == null) {
                            leaseHolder = leaseStates[i].get().getLeaseHolder();
                        } else {
                            if (!leaseHolder.equals(leaseStates[i].get().getLeaseHolder())) {
                                com.stop();
                                System.out.println("INVARIANT VIOLATED!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
                                System.out.println("\n\n");
                                System.out.println("got lease for: " + leaseHolder);
                                System.out.println(
                                        "but host " + i + " learned " + leaseStates[i].get().getLeaseHolder());

                                for (int j = 0; j < numHosts; j++) {
                                    System.out.println(
                                            stages[j]._dump_acceptor_state(new ASCIIString("testcell")));
                                    System.out.println("signalled result: " + leaseStates[j].get());
                                    System.out.println("          valid: " + leaseStates[j].get().isValid());
                                }
                                System.exit(2);
                            } else {
                                System.out.print("+");
                            }
                        }
                    } else {
                        System.out.print("o");
                    }
                }
            }

            System.out.println("");

            final int host = (int) (Math.random() * numHosts);
            stages[host].closeCell(new ASCIIString("testcell"), false);

            //make sure that cells also time out some times (requires a wait > 2*lease_timeout)
            final int waitTime = (int) (Math.random() * (leaseTimeout * 2 + 1000));
            System.out.println("waiting for " + waitTime + "ms");
            Thread.sleep(waitTime);
            stages[host].openCell(new ASCIIString("testcell"), acceptors[host], false);
        } while (true);

        /*
        for (int i = 0; i < numHosts; i++) {
        stages[i].shutdown();
        }
        com.shutdown();
         */

    } catch (Exception ex) {
        ex.printStackTrace();
        System.exit(1);
    }

}

---

From source file:co.runrightfast.core.utils.ServiceUtils.java

static void start(@NonNull final Service service) {
    switch (service.state()) {
    case NEW://  ww w.j  a  v  a 2  s.c  o  m
        service.startAsync();
        awaitRunning(service);
        return;
    case STARTING:
        service.awaitRunning();
        awaitRunning(service);
        return;
    case RUNNING:
        return;
    default:
        throw new IllegalStateException(
                "Service cannot be started because the service state is :" + service.state());
    }

}

---

From source file:co.runrightfast.commons.utils.ServiceUtils.java

public static void start(@NonNull final Service service) {
    switch (service.state()) {
    case NEW://ww w  .  j  a v a2s  .  c om
        service.startAsync();
        awaitRunning(service);
        return;
    case STARTING:
        service.awaitRunning();
        awaitRunning(service);
        return;
    case RUNNING:
        return;
    default:
        throw new IllegalServiceStateTransitionException(service.state(), RUNNING);
    }

}

---

From source file:com.griddynamics.jagger.engine.e1.process.Services.java

public static void awaitTermination(Service service, long timeout) {
    long begin = System.currentTimeMillis();
    while (true) {
        State state = service.state();

        if (state == State.TERMINATED) {
            break;
        }//from   w  w  w  .  ja  v  a  2s.c  o m

        if (state == State.FAILED) {
            throw new IllegalStateException("Service '" + service + "' execution unexpectedly failed");
        }

        TimeUtils.sleepMillis(500);
        long now = System.currentTimeMillis();

        long diff = now - begin;
        if (diff > timeout) {
            throw new RuntimeException(
                    String.format("Waiting for service %s is failed. Timeout %d", service, diff));
        }
    }
}

---

From source file:co.runrightfast.core.utils.ServiceUtils.java

static void stopAsync(final Service service) {
    if (service != null) {
        switch (service.state()) {
        case STARTING:
        case RUNNING:
            service.stopAsync();//from  ww w.j  a v a 2 s. co  m
            return;
        case STOPPING:
            return;
        case NEW:
        case FAILED:
        case TERMINATED:
            LOG.logp(FINE, ServiceUtils.class.getName(), "stop", () -> String
                    .format("Service (%s) is not running: %s", service.getClass().getName(), service.state()));

        }
    }
}

---

From source file:co.runrightfast.commons.utils.ServiceUtils.java

public static void stopAsync(final Service service) {
    if (service != null) {
        switch (service.state()) {
        case STARTING:
        case RUNNING:
            service.stopAsync();// w  w  w.j av  a  2s  .  c o m
            return;
        case STOPPING:
            return;
        case NEW:
        case FAILED:
        case TERMINATED:
            log.debug("Service ({}) is not running: {}", service.getClass().getName(), service.state());
        }
    }
}

---

From source file:co.runrightfast.core.utils.ServiceUtils.java

/**
 *
 * @param service if null, then do nothing
 *///  ww w. ja  v a 2  s  . com
static void stop(final Service service) {
    if (service != null) {
        switch (service.state()) {
        case STARTING:
        case RUNNING:
            service.stopAsync();
            awaitTerminated(service);
            return;
        case STOPPING:
            awaitTerminated(service);
            return;
        case NEW:
        case FAILED:
        case TERMINATED:
            LOG.logp(FINE, ServiceUtils.class.getName(), "stop", () -> String
                    .format("Service (%s) is not running: %s", service.getClass().getName(), service.state()));
        }
    }
}

---

From source file:co.runrightfast.commons.utils.ServiceUtils.java

/**
 *
 * @param service if null, then do nothing
 *///from   w  ww. j  ava 2  s  .c  o m
public static void stop(final Service service) {
    if (service != null) {
        switch (service.state()) {
        case STARTING:
        case RUNNING:
            service.stopAsync();
            awaitTerminated(service);
            return;
        case STOPPING:
            awaitTerminated(service);
            return;
        case NEW:
        case FAILED:
        case TERMINATED:
            log.debug("Service ({}) is not running: {}", service.getClass().getName(), service.state());
        }
    }
}

---

From source file:io.pravega.segmentstore.server.ServiceListeners.java

/**
 * Awaits for the given Service to shut down, whether normally or exceptionally.
 *
 * @param service       The store to monitor.
 * @param throwIfFailed Throw the resulting exception if the store ended up in a FAILED state.
 *//*from ww  w.  ja v  a 2  s  .  com*/
public static void awaitShutdown(Service service, boolean throwIfFailed) {
    try {
        service.awaitTerminated();
    } catch (IllegalStateException ex) {
        if (throwIfFailed || service.state() != Service.State.FAILED) {
            throw ex;
        }
    }
}

---

From source file:io.pravega.segmentstore.server.ServiceListeners.java

/**
 * Awaits for the given Service to shut down, whether normally or exceptionally.
 *
 * @param service       The store to monitor.
 * @param timeout       The maximum amount of time to wait for the shutdown.
 * @param throwIfFailed Throw the resulting exception if the store ended up in a FAILED state.
 * @throws TimeoutException If the store did not shut down within the specified amount of time. This exception is
 *                          thrown regardless of the value passed in as throwIfFailed.
 *//* www .  j ava2  s . c o  m*/
public static void awaitShutdown(Service service, Duration timeout, boolean throwIfFailed)
        throws TimeoutException {
    try {
        service.awaitTerminated(timeout.toMillis(), TimeUnit.MILLISECONDS);
    } catch (IllegalStateException ex) {
        if (throwIfFailed || service.state() != Service.State.FAILED) {
            throw ex;
        }
    }
}

---

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