Example usage for java.util.concurrent Executors newSingleThreadExecutor

Introduction

In this page you can find the example usage for java.util.concurrent Executors newSingleThreadExecutor.

Prototype

public static ExecutorService newSingleThreadExecutor() 

Source Link

Document

Creates an Executor that uses a single worker thread operating off an unbounded queue.

Usage

From source file:com.cognifide.actions.msg.websocket.client.SocketClient.java

private void startLoops() {
    for (AgentConfig config : agentConfigManager.getConfigurations().values()) {
        if (config.isEnabled() && config.usedForReverseReplication()) {
            try {
                final SocketClientRunnable loop = createLoop(config);
                Executors.newSingleThreadExecutor().execute(loop);
                loops.add(loop);/*from w  w  w .j  a  v  a 2 s.com*/
            } catch (URISyntaxException e) {
                LOG.error("Can't parse agent url: " + config.getTransportURI(), e);
            }
        }
    }
}

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From source file:com.zxy.commons.mq.consumer.AbstractConsumer.java

/**
 * // ww  w.  j  av a2s . c o  m
 * 
 * @param groupId groupId
 * @param topic topic
 * @param threadNum thread number
 */
public AbstractConsumer(String groupId, String topic, Integer threadNum) {
    this.topic = topic;
    if (threadNum != null) {
        this.threadNum = threadNum;
        this.executor = Executors.newFixedThreadPool(threadNum);
    } else {
        this.threadNum = 1;
        this.executor = Executors.newSingleThreadExecutor();
    }
    Properties props = new Properties();
    props.put("zookeeper.connect", PROP.getZookeeperConnect());
    props.put("group.id", groupId);
    props.put("zookeeper.session.timeout.ms", PROP.getZookeeperSessionTimeout());
    props.put("zookeeper.sync.time.ms", PROP.getZookeeperSyncTime());
    props.put("auto.commit.interval.ms", PROP.getAutoCommitInterval());
    String autoCommitEnable = PROP.getAutoCommitEnable();
    if (StringUtils.isNotBlank(autoCommitEnable)) {
        props.put("auto.commit.enable", autoCommitEnable);
    }
    consumer = kafka.consumer.Consumer.createJavaConsumerConnector(new ConsumerConfig(props));
}

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From source file:com.predic8.membrane.core.CoreActivator.java

public void start(BundleContext context) throws Exception {
    super.start(context);
    plugin = this;

    pluginLogger = CoreActivator.getDefault().getLog();

    //String path = new File(FileLocator.resolve(CoreActivator.getDefault().getBundle().getEntry("/")).getPath()).getAbsolutePath();

    final MembraneCommandLine cl = new MembraneCommandLine();
    cl.parse(fixArguments(Platform.getCommandLineArgs()));

    if (cl.hasMonitorBeans()) {
        log.info("loading monitor beans from command line argument: " + cl.getMonitorBeans());
        Router.init(FileUtil.prefixMembraneHomeIfNeeded(new File(cl.getMonitorBeans())).getAbsolutePath(),
                this.getClass().getClassLoader());
    } else {//from   ww  w.  ja  v  a2s  .  co  m
        try {
            if (ClassloaderUtil.fileExists(getMonitorBeansFileName())) {
                info("Eclipse framework found config file: " + getMonitorBeansFileName());
                readBeanConfigWhenStartedAsProduct();
            } else {
                readBeanConfigWhenStartedInEclipse();
            }
        } catch (Exception e1) {
            error("Unable to read bean configuration file: " + e1.getMessage());
            error("Unable to read bean configuration file: " + e1.getStackTrace());
            e1.printStackTrace();
        }
    }

    Executors.newSingleThreadExecutor().execute(new Runnable() {
        public void run() {
            try {
                Router.getInstance().getConfigurationManager().loadConfiguration(getConfigurationFileName(cl));
            } catch (Exception e) {
                log.warn("no configuration loaded", e);
                // we ignore this exception because the monitor can start up
                // without loading a rules configuration
                // we need to throw an exception because the router must display an error message
            }
        }

        private String getConfigurationFileName(MembraneCommandLine cl) {
            if (cl.hasConfiguration()) {
                log.info("loading configuration from command line argument: " + cl.getConfiguration());
                return FileUtil.prefixMembraneHomeIfNeeded(new File(cl.getConfiguration())).getAbsolutePath();
            }
            return System.getProperty("user.home") + System.getProperty("file.separator") + ".membrane.xml";
        }
    });
}

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From source file:com.github.google.beaconfig.ScanningActivity.java

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);//from  w w  w  .  j a v a 2  s .  c  o  m

    new SavedConfigurationsManager(this).initialiseConfigurationSaving();
    executor = Executors.newSingleThreadExecutor();

    beaconsListAdapter = new BeaconListAdapter(new ArrayList<BeaconScanData>(), getApplication());
    RecyclerView beaconsRecyclerView = (RecyclerView) findViewById(R.id.rv);
    beaconsRecyclerView.setAdapter(beaconsListAdapter);
    beaconsRecyclerView.setLayoutManager(new LinearLayoutManager(getApplicationContext()));

    final FloatingActionButton refresh = (FloatingActionButton) findViewById(R.id.fab);
    refresh.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            scan();
        }
    });

    setUpThrobber();
    getRequiredPermissions();

    beaconsRecyclerView.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View view, MotionEvent motionEvent) {
            return swipeRefreshLayout.isRefreshing();
        }
    });

    beaconsRecyclerView.addOnItemTouchListener(new RecyclerView.OnItemTouchListener() {
        @Override
        public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
            Log.d(TAG, "On interception touch listener " + swipeRefreshLayout.isRefreshing());
            return swipeRefreshLayout.isRefreshing();
        }

        @Override
        public void onTouchEvent(RecyclerView rv, MotionEvent e) {

        }

        @Override
        public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {

        }
    });

}

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From source file:com.github.brandtg.switchboard.MysqlLogPuller.java

/**
 * Starts pulling events from switchboard server.
 *///from ww  w .  j a  v  a 2 s .  c  o  m
public void start() throws Exception {
    if (!isStarted.getAndSet(true)) {
        outputStream.connect(inputStream);

        callbackExecutor = Executors.newSingleThreadExecutor();
        refreshExecutor = Executors.newSingleThreadExecutor();
        eventExecutors = new NioEventLoopGroup();

        // Start server to receive log segments
        logReceiver = new LogReceiver(sinkAddress, eventExecutors, outputStream);
        logReceiver.start();

        // Iterates through events and fires appropriate callbacks
        callbackExecutor.submit(getCallback());

        // Pulls log indexes
        logPuller = new LogPuller(sourceAddress, sinkAddress, database, lastIndex);
        logReceiver.registerListener(logPuller);
        refreshExecutor.submit(logPuller);
    }
}

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From source file:com.example.android.codelabs.agera.step3.CalculatorActivityFinal.java

@Override
protected void onStart() {
    super.onStart();

    mExecutor = Executors.newSingleThreadExecutor();

    mResultRepository = Repositories.repositoryWithInitialValue(Result.<String>absent())
            .observe(mValue1Repo, mValue2Repo, mOperationSelector).onUpdatesPerLoop().goTo(mExecutor)
            .attemptTransform(CalculatorOperations::keepCpuBusy).orEnd(Result::failure).getFrom(mValue1Repo)
            .mergeIn(mValue2Repo, Pair::create)
            .attemptMergeIn(mOperationSelector, CalculatorOperations::attemptOperation).orEnd(Result::failure)
            .thenTransform(input -> Result.present(input.toString()))
            .onConcurrentUpdate(RepositoryConfig.SEND_INTERRUPT).compile();

    ((SeekBar) findViewById(R.id.seekBar1))
            .setOnSeekBarChangeListener(new RepositorySeekBarListener(mValue1Repo));

    ((SeekBar) findViewById(R.id.seekBar2))
            .setOnSeekBarChangeListener(new RepositorySeekBarListener(mValue2Repo));

    mValue1TVupdatable = () -> ((TextView) findViewById(R.id.value1)).setText(mValue1Repo.get().toString());

    mValue2TVupdatable = () -> ((TextView) findViewById(R.id.value2)).setText(mValue2Repo.get().toString());

    TextView resultTextView = (TextView) findViewById(R.id.textViewResult);
    mResultUpdatable = () -> mResultRepository.get()
            .ifFailedSendTo(t -> Toast.makeText(this, t.getLocalizedMessage(), Toast.LENGTH_SHORT).show())
            .ifFailedSendTo(t -> {// w ww. j ava  2  s. c  om
                if (t instanceof ArithmeticException) {
                    resultTextView.setText("DIV#0");
                } else {
                    resultTextView.setText("N/A");
                }
            }).ifSucceededSendTo(resultTextView::setText);

    setUpdatables();
}

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From source file:net.openid.appauthdemo.TokenActivity.java

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    mStateManager = AuthStateManager.getInstance(this);
    mExecutor = Executors.newSingleThreadExecutor();

    Configuration config = Configuration.getInstance(this);
    if (config.hasConfigurationChanged()) {
        Toast.makeText(this, "Configuration change detected", Toast.LENGTH_SHORT).show();
        signOut();/* w w  w  .  ja v  a2  s  .  com*/
        return;
    }

    mAuthService = new AuthorizationService(this,
            new AppAuthConfiguration.Builder().setConnectionBuilder(config.getConnectionBuilder()).build());

    setContentView(R.layout.activity_token);
    displayLoading("Restoring state...");

    if (savedInstanceState != null) {
        try {
            mUserInfoJson.set(new JSONObject(savedInstanceState.getString(KEY_USER_INFO)));
        } catch (JSONException ex) {
            Log.e(TAG, "Failed to parse saved user info JSON, discarding", ex);
        }
    }
}

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From source file:edu.vt.middleware.cas.ldap.LoadDriver.java

public LoadDriver(final int sampleCount, final int workerCount, final File credentialsFile,
        final ApplicationContext context) {

    this.credentialsFile = credentialsFile;
    this.resultExecutor = Executors.newSingleThreadExecutor();
    this.workExecutor = Executors.newFixedThreadPool(workerCount);
    this.context = context;
    final AuthenticationHandler handler = this.context.getBean(AuthenticationHandler.class);
    if (handler == null) {
        throw new IllegalStateException("AuthenticationHandler bean not found.");
    }//from ww w  .j a  v  a2  s  .co m
    if (!handler.supports(new UsernamePasswordCredentials())) {
        throw new IllegalStateException("AuthenticationHandler bean does not support password authentication");
    }
    this.state.setWorkQueue(new ArrayBlockingQueue<UsernamePasswordCredentials>(sampleCount));
    this.state.setResultQueue(new ArrayBlockingQueue<Sample>(sampleCount));
    this.state.setAuthenticationHandler(handler);
}

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From source file:com.github.c77.base_driver.kobuki.KobukiBaseDevice.java

public KobukiBaseDevice(UsbSerialDriver driver) throws Exception {
    if (driver == null) {
        throw new Exception("null USB driver provided");
    }//from  ww w.  ja  va  2  s. com
    serialDriver = driver;
    try {
        serialDriver.open();
        serialDriver.setParameters(115200, UsbSerialDriver.DATABITS_8, UsbSerialDriver.STOPBITS_1,
                UsbSerialDriver.PARITY_NONE);
    } catch (IOException e) {
        log.info("Error setting up device: " + e.getMessage(), e);
        try {
            serialDriver.close();
        } catch (IOException e1) {
            e1.printStackTrace();
        }
    }

    final ExecutorService executorService = Executors.newSingleThreadExecutor();

    SerialInputOutputManager serialInputOutputManager;

    final SerialInputOutputManager.Listener listener = new SerialInputOutputManager.Listener() {
        @Override
        public void onRunError(Exception e) {
        }

        @Override
        public void onNewData(final byte[] data) {
            KobukiBaseDevice.this.updateReceivedData(data);
        }
    };

    serialInputOutputManager = new SerialInputOutputManager(serialDriver, listener);
    executorService.submit(serialInputOutputManager);
}

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From source file:com.github.c77.base_driver.husky.HuskyBaseDevice.java

public HuskyBaseDevice(UsbSerialDriver driver) {
    // Initialize timestamp for messages to be written to the Husky base
    initialTime = System.currentTimeMillis();

    // Open and initialize the underlying USB-serial driver
    serialDriver = driver;//from   ww w. j  ava2 s  .  co  m
    try {
        serialDriver.open();
        serialDriver.setParameters(115200, UsbSerialDriver.DATABITS_8, UsbSerialDriver.STOPBITS_1,
                UsbSerialDriver.PARITY_NONE);
        log.info("Serial device opened correctly");
    } catch (IOException e) {
        log.error("Error setting up device: " + e.getMessage(), e);
        try {
            serialDriver.close();
        } catch (Throwable t) {
        }
        throw new RuntimeException("Couldn't open USB device driver", e);
    }

    // Listen for USB-serial input events and call updateReceivedData whenever new data
    // is received
    final ExecutorService executorService = Executors.newSingleThreadExecutor();
    SerialInputOutputManager serialInputOutputManager;
    final SerialInputOutputManager.Listener listener = new SerialInputOutputManager.Listener() {
        @Override
        public void onRunError(Exception e) {
        }

        @Override
        public void onNewData(final byte[] data) {
            HuskyBaseDevice.this.updateReceivedData(data);
        }
    };
    serialInputOutputManager = new SerialInputOutputManager(serialDriver, listener);
    executorService.submit(serialInputOutputManager);
}

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