List of usage examples for java.nio.channels Channel close
public void close() throws IOException;
From source file:com.github.neoio.nio.util.NIOUtils.java
public static void closeChannel(Channel channel) throws NetIOException { try {/* w ww.j ava2s.co m*/ channel.close(); } catch (IOException e) { throw new NetIOException(e); } }
From source file:it.geosolutions.tools.io.file.IOUtils.java
/** * Close the specified input <code>FileChannel</code> * /* w ww .j av a 2 s .c om*/ * @throws IOException * in case something bad happens. */ public static void closeQuietly(Channel channel) throws IOException { Objects.notNull(channel); if (channel.isOpen()) channel.close(); }
From source file:oz.hadoop.yarn.api.net.AbstractSocketHandler.java
/** * /* w w w.j a va 2 s . c o m*/ * @param channel */ protected void closeChannel(Channel channel) { try { channel.close(); } catch (IOException e) { logger.warn("Failure closing channel", e); } if (channel.equals(this.rootChannel)) { lifeCycleLatch.countDown(); } }
From source file:ca.wumbo.doommanager.server.ServerManager.java
/** * Kills any connections that have not sent any messages for a period of * time./*w w w.ja va 2 s. c om*/ * * @return * True if there was no error, false if an error occured. */ private boolean killInactiveConnections() { // Go through each connection every so often to check for dead connections. if (System.currentTimeMillis() - lastTimeoutCheckMillis > TIMEOUT_FREQUENCY_CHECK_MILLIS) { lastTimeoutCheckMillis = System.currentTimeMillis(); log.trace("Checking for timeouts... {}", System.currentTimeMillis()); // We cannot do this if the selector is closed. if (selector.isOpen()) { // Go through each connection... for (SelectionKey key : selector.keys()) { // If the attachment has client info (which it always should)... if (key.attachment() instanceof ClientInfo) { ClientInfo clientInfo = (ClientInfo) key.attachment(); // If the client hasn't responded for a certain amount of time, kill the connection. if (clientInfo.hasReceivedMessageSince(TIMEOUT_CLIENT_MILLIS)) { log.info("Client {} timed out, requesting connection termination.", clientInfo.getIPAddress()); Channel channel = key.channel(); key.cancel(); try { channel.close(); } catch (IOException e) { log.error("Error closing a timed out client's channel: {}", e.getMessage()); } } } } } } // Signal all is good. return true; }
From source file:net.pms.network.RequestHandlerV2.java
@Override public void exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent e) throws Exception { Channel ch = e.getChannel(); Throwable cause = e.getCause(); if (cause instanceof TooLongFrameException) { sendError(ctx, HttpResponseStatus.BAD_REQUEST); return;/*from w w w .j a va2 s . c o m*/ } if (cause != null) { if (cause.getClass().equals(IOException.class)) { LOGGER.debug("Connection error: " + cause); StartStopListenerDelegate startStopListenerDelegate = (StartStopListenerDelegate) ctx .getAttachment(); if (startStopListenerDelegate != null) { LOGGER.debug("Premature end, stopping..."); startStopListenerDelegate.stop(); } } else if (!cause.getClass().equals(ClosedChannelException.class)) { LOGGER.debug("Caught exception: {}", cause.getMessage()); LOGGER.trace("", cause); } } if (ch.isConnected()) { sendError(ctx, HttpResponseStatus.INTERNAL_SERVER_ERROR); } ch.close(); }
From source file:org.apache.tajo.rpc.NettyClientBase.java
@Override public void close() { Channel channel = getChannel(); if (channel != null && channel.isOpen()) { LOG.debug("Proxy will be disconnected from remote " + channel.remoteAddress()); /* channelInactive receives event and then client terminates all the requests */ channel.close().syncUninterruptibly(); }/* www . j a v a 2 s. c o m*/ }
From source file:org.geoserver.rest.util.IOUtils.java
/** * Close the specified input <code>FileChannel</code> * /*from w ww . ja va 2s .c o m*/ * @throws IOException in case something bad happens. */ public static void closeQuietly(Channel channel) throws IOException { inputNotNull(channel); if (channel.isOpen()) channel.close(); }
From source file:org.mule.util.FileUtils.java
/** * Unconditionally close a <code>Channel</code>. * <p>//from ww w . j av a 2 s . c o m * Equivalent to {@link Channel#close()}, except any exceptions will be ignored. * This is typically used in finally blocks. * * @param channel the Channel to close, may be null or already closed */ public static void closeQuietly(Channel channel) { try { if (channel != null) { channel.close(); } } catch (IOException ioe) { // ignore } }
From source file:org.openhab.binding.tcp.AbstractSocketChannelBinding.java
/** * @{inheritDoc}//w w w . ja v a2s . c om */ @Override protected void execute() { // Cycle through the Items and setup channels if required for (P provider : providers) { for (String itemName : provider.getItemNames()) { for (Command aCommand : ((P) provider).getAllCommands(itemName)) { String remoteHost = ((P) provider).getHost(itemName, aCommand); String remotePort = ((P) provider).getPortAsString(itemName, aCommand); Direction direction = ((P) provider).getDirection(itemName, aCommand); InetSocketAddress remoteAddress = null; if (!(remoteHost.equals("*") || remotePort.equals("*"))) { remoteAddress = new InetSocketAddress(remoteHost, Integer.parseInt(remotePort)); } Channel newChannel = null; Channel existingChannel = null; if (useAddressMask && (remoteHost.equals("*") || remotePort.equals("*"))) { newChannel = new Channel(itemName, aCommand, remoteHost, remotePort, ((P) provider).getDirection(itemName, aCommand), false, null, false, null); existingChannel = channels.get(itemName, aCommand, direction, remoteHost, remotePort); } else { newChannel = new Channel(itemName, aCommand, remoteAddress, ((P) provider).getDirection(itemName, aCommand), false, null, false, null); existingChannel = channels.get(itemName, aCommand, direction, remoteAddress); } if (existingChannel == null) { if (direction == Direction.IN) { boolean assigned = false; if (useAddressMask && (remoteHost.equals("*") || remotePort.equals("*"))) { logger.warn( "When using address masks we will not verify if we are already listening to similar incoming connections"); logger.info("We will accept data coming from the remote end {}:{}", remoteHost, remotePort); channels.add(newChannel); } else { if (itemShareChannels) { Channel firstChannel = channels.getFirstServed(itemName, direction, remoteAddress); if (firstChannel != null) { newChannel.channel = firstChannel.channel; assigned = true; } } if (bindingShareChannels) { Channel firstChannel = channels.getFirstServed(direction, remoteAddress); if (firstChannel != null) { newChannel.channel = firstChannel.channel; assigned = true; } } if (directionsShareChannels) { Channel firstChannel = channels.getFirstServed(remoteAddress); if (firstChannel != null) { newChannel.channel = firstChannel.channel; assigned = true; } } if (!assigned || newChannel.channel == null) { if (channels.contains(itemName, aCommand, Direction.IN, remoteAddress)) { logger.warn("We already listen for incoming connections from {}", remoteAddress); } else { logger.debug("Setting up the inbound channel {}", newChannel); channels.add(newChannel); logger.info("We will accept data coming from the remote end {}", remoteAddress); } } } } else if (direction == Direction.OUT) { boolean assigned = false; if (useAddressMask && (remoteHost.equals("*") || remotePort.equals("*"))) { logger.error( "We do not accept outgoing connections for Items that do use address masks"); } else { channels.add(newChannel); if (newChannel.channel == null) { if (itemShareChannels) { Channel firstChannel = channels.getFirstServed(itemName, direction, remoteAddress); if (firstChannel != null) { newChannel.channel = firstChannel.channel; assigned = true; } } if (bindingShareChannels) { Channel firstChannel = channels.getFirstServed(direction, remoteAddress); if (firstChannel != null) { newChannel.channel = firstChannel.channel; assigned = true; } } if (directionsShareChannels) { Channel firstChannel = channels.getFirstServed(remoteAddress); if (firstChannel != null) { newChannel.channel = firstChannel.channel; assigned = true; } } if (assigned) { logger.debug("Setting up the outbound assigned channel {} ", newChannel); } synchronized (this) { if (!assigned || newChannel.channel == null) { SocketChannel newSocketChannel = null; try { newSocketChannel = SocketChannel.open(); } catch (IOException e2) { logger.error("An exception occurred while opening a channel: {}", e2.getMessage()); } try { newSocketChannel.socket().setKeepAlive(true); newSocketChannel.configureBlocking(false); } catch (IOException e) { logger.error( "An exception occurred while configuring a channel: {}", e.getMessage()); } synchronized (selector) { selector.wakeup(); int interestSet = SelectionKey.OP_READ | SelectionKey.OP_WRITE | SelectionKey.OP_CONNECT; try { newSocketChannel.register(selector, interestSet); } catch (ClosedChannelException e1) { logger.error( "An exception occurred while registering a selector: {}", e1.getMessage()); } } newChannel.channel = newSocketChannel; logger.debug("Setting up the outbound channel {}", newChannel); try { logger.info("Connecting the channel {} ", newChannel); newSocketChannel.connect(remoteAddress); } catch (IOException e) { logger.error("An exception occurred while connecting a channel: {}", e.getMessage()); } } } } else { logger.info("There is already an active channel {} for the remote end {}", newChannel.channel, newChannel.remote); } } } } } } } // Check on channels for which we have to process data synchronized (selector) { try { // Wait for an event selector.selectNow(); } catch (IOException e) { logger.error("An exception occurred while Selecting ({})", e.getMessage()); } } // Get list of selection keys with pending events Iterator<SelectionKey> it = selector.selectedKeys().iterator(); // Process each key at a time while (it.hasNext()) { SelectionKey selKey = (SelectionKey) it.next(); it.remove(); if (selKey.isValid()) { if (selKey == listenerKey) { if (selKey.isAcceptable()) { try { SocketChannel newChannel = listenerChannel.accept(); logger.info("Received connection request from {}", newChannel.getRemoteAddress()); Channel firstChannel = channels.getFirstNotServed(Direction.IN, (InetSocketAddress) newChannel.getRemoteAddress()); if (firstChannel != null) { if (firstChannel.direction == Direction.IN) { if (useAddressMask && (firstChannel.host.equals("*") || firstChannel.port.equals("*"))) { logger.info( "{}:{} is an allowed masked remote end. The channel will now be configured", firstChannel.host, firstChannel.port); } else { logger.info( "{} is an allowed remote end. The channel will now be configured", firstChannel.remote); } if (firstChannel.channel == null || !firstChannel.channel.isOpen()) { firstChannel.channel = newChannel; firstChannel.isBlocking = false; firstChannel.buffer = null; if (itemShareChannels) { channels.replace(firstChannel.item, firstChannel.direction, (InetSocketAddress) newChannel.getRemoteAddress(), firstChannel.channel); } if (bindingShareChannels) { channels.replace(firstChannel.direction, (InetSocketAddress) newChannel.getRemoteAddress(), firstChannel.channel); } if (directionsShareChannels) { channels.replace((InetSocketAddress) newChannel.getRemoteAddress(), firstChannel.channel); } try { newChannel.configureBlocking(false); //setKeepAlive(true); } catch (IOException e) { logger.error("An exception occurred while configuring a channel: {}", e.getMessage()); } synchronized (selector) { selector.wakeup(); try { newChannel.register(selector, newChannel.validOps()); } catch (ClosedChannelException e1) { logger.error( "An exception occurred while registering a selector: {}", e1.getMessage()); } } Scheduler scheduler = null; try { scheduler = StdSchedulerFactory.getDefaultScheduler(); } catch (SchedulerException e1) { logger.error( "An exception occurred while getting the Quartz scheduler: {}", e1.getMessage()); } JobDataMap map = new JobDataMap(); map.put("Channel", firstChannel); map.put("Binding", this); JobDetail job = newJob(ConfigureJob.class).withIdentity( Integer.toHexString(hashCode()) + "-Configure-" + Long.toString(System.currentTimeMillis()), this.toString()).usingJobData(map).build(); Trigger trigger = newTrigger().withIdentity( Integer.toHexString(hashCode()) + "-Configure-" + Long.toString(System.currentTimeMillis()), this.toString()).startNow().build(); try { if (job != null && trigger != null && selKey != listenerKey) { scheduler.scheduleJob(job, trigger); } } catch (SchedulerException e) { logger.error( "An exception occurred while scheduling a job with the Quartz Scheduler {}", e.getMessage()); } } else { logger.info( "We previously already accepted a connection from the remote end {} for this channel. Goodbye", firstChannel.remote); newChannel.close(); } } else { logger.info( "Disconnecting the remote end {} that tries to connect an outbound only port", newChannel.getRemoteAddress()); newChannel.close(); } } else { logger.info("Disconnecting the unallowed remote end {}", newChannel.getRemoteAddress()); newChannel.close(); } } catch (IOException e) { logger.error("An exception occurred while configuring a channel: {}", e.getMessage()); } } } else { SocketChannel theSocketChannel = (SocketChannel) selKey.channel(); Channel theChannel = channels.get(theSocketChannel); if (selKey.isConnectable()) { channels.setAllReconnecting(theSocketChannel, false); boolean result = false; boolean error = false; try { result = theSocketChannel.finishConnect(); } catch (NoConnectionPendingException e) { // this channel is not connected and a connection operation // has not been initiated logger.warn("The channel {} has no connection pending ({})", theSocketChannel, e.getMessage()); error = true; } catch (ClosedChannelException e) { // If some other I/O error occurs logger.warn("The channel {} is closed ({})", theSocketChannel, e.getMessage()); error = true; } catch (IOException e) { // If some other I/O error occurs logger.warn("The channel {} has encountered an unknown IO Exception: {}", theSocketChannel, e.getMessage()); error = true; } if (error) { Scheduler scheduler = null; try { scheduler = StdSchedulerFactory.getDefaultScheduler(); } catch (SchedulerException e1) { logger.error("An exception occurred while getting the Quartz scheduler: {}", e1.getMessage()); } JobDataMap map = new JobDataMap(); map.put("Channel", theChannel); map.put("Binding", this); JobDetail job = newJob(ReconnectJob.class) .withIdentity(Integer.toHexString(hashCode()) + "-Reconnect-" + Long.toString(System.currentTimeMillis()), this.toString()) .usingJobData(map).build(); Trigger trigger = newTrigger() .withIdentity(Integer.toHexString(hashCode()) + "-Reconnect-" + Long.toString(System.currentTimeMillis()), this.toString()) .startAt(futureDate(reconnectInterval, IntervalUnit.SECOND)).build(); try { if (job != null && trigger != null && selKey != listenerKey) { if (!theChannel.isReconnecting) { channels.setAllReconnecting(theSocketChannel, true); scheduler.scheduleJob(job, trigger); } } } catch (SchedulerException e) { logger.error( "An exception occurred while scheduling a job with the Quartz Scheduler {}", e.getMessage()); } } else { if (result) { InetSocketAddress remote = null; try { remote = (InetSocketAddress) theSocketChannel.getRemoteAddress(); } catch (IOException e) { logger.error( "An exception occurred while getting the remote address of channel {} ({})", theSocketChannel, e.getMessage()); } logger.info("The channel for {} is now connected", remote); if (itemShareChannels) { channels.replace(theChannel.item, theChannel.direction, remote, theChannel.channel); } if (bindingShareChannels) { channels.replace(theChannel.direction, remote, theChannel.channel); } if (directionsShareChannels) { channels.replace(remote, theChannel.channel); } Scheduler scheduler = null; try { scheduler = StdSchedulerFactory.getDefaultScheduler(); } catch (SchedulerException e1) { logger.error("An exception occurred while getting the Quartz scheduler: {}", e1.getMessage()); } JobDataMap map = new JobDataMap(); map.put("Channel", theChannel); map.put("Binding", this); JobDetail job = newJob(ConfigureJob.class) .withIdentity( Integer.toHexString(hashCode()) + "-Configure-" + Long.toString(System.currentTimeMillis()), this.toString()) .usingJobData(map).build(); Trigger trigger = newTrigger() .withIdentity( Integer.toHexString(hashCode()) + "-Configure-" + Long.toString(System.currentTimeMillis()), this.toString()) .startNow().build(); try { if (job != null && trigger != null && selKey != listenerKey) { scheduler.scheduleJob(job, trigger); } } catch (SchedulerException e) { logger.error( "An exception occurred while scheduling a job with the Quartz Scheduler {}", e.getMessage()); } job = newJob(ReconnectJob.class) .withIdentity( Integer.toHexString(hashCode()) + "-Reconnect-" + Long.toString(System.currentTimeMillis()), this.toString()) .usingJobData(map).build(); trigger = newTrigger() .withIdentity( Integer.toHexString(hashCode()) + "-Reconnect-" + Long.toString(System.currentTimeMillis()), this.toString()) .withSchedule(cronSchedule(reconnectCron)).build(); try { if (job != null && trigger != null && selKey != listenerKey) { scheduler.scheduleJob(job, trigger); } } catch (SchedulerException e) { logger.error( "An exception occurred while scheduling a job with the Quartz Scheduler {}", e.getMessage()); } } } } else if (selKey.isReadable()) { ByteBuffer readBuffer = ByteBuffer.allocate(maximumBufferSize); int numberBytesRead = 0; boolean error = false; try { //TODO: Additional code to split readBuffer in multiple parts, in case the data send by the remote end is not correctly fragemented. Could be handed of to implementation class if for example, the buffer needs to be split based on a special character like line feed or carriage return numberBytesRead = theSocketChannel.read(readBuffer); } catch (NotYetConnectedException e) { logger.warn("The channel for {} has no connection pending ({})", theChannel.remote, e.getMessage()); if (!theSocketChannel.isConnectionPending()) { error = true; } } catch (IOException e) { // If some other I/O error occurs logger.warn("The channel for {} has encountered an unknown IO Exception: {}", theChannel.remote, e.getMessage()); error = true; } if (numberBytesRead == -1) { try { theSocketChannel.close(); } catch (IOException e) { logger.warn("The channel for {} is closed ({})", theChannel.remote, e.getMessage()); } error = true; } if (error) { if (theChannel.direction == Direction.OUT) { Scheduler scheduler = null; try { scheduler = StdSchedulerFactory.getDefaultScheduler(); } catch (SchedulerException e1) { logger.error("An exception occurred while getting the Quartz scheduler: {}", e1.getMessage()); } JobDataMap map = new JobDataMap(); map.put("Channel", theChannel); map.put("Binding", this); JobDetail job = newJob(ReconnectJob.class).withIdentity( Integer.toHexString(hashCode()) + "-Reconnect-" + Long.toString(System.currentTimeMillis()), "AbstractSocketChannelBinding").usingJobData(map).build(); Trigger trigger = newTrigger() .withIdentity( Integer.toHexString(hashCode()) + "-Reconnect-" + Long.toString(System.currentTimeMillis()), "AbstractSocketChannelBinding") .startAt(futureDate(reconnectInterval, IntervalUnit.SECOND)).build(); try { if (job != null && trigger != null && selKey != listenerKey) { if (!theChannel.isReconnecting) { channels.setAllReconnecting(theSocketChannel, true); scheduler.scheduleJob(job, trigger); } } } catch (SchedulerException e) { logger.error( "An exception occurred while scheduling a job with the Quartz Scheduler {}", e.getMessage()); } } else { theChannel.channel = null; } } else { ArrayList<Channel> channelsToServe = new ArrayList<Channel>(); channelsToServe = channels.getAll(theSocketChannel); if (channelsToServe.size() > 0) { readBuffer.flip(); boolean isBlocking = channels.isBlocking(theSocketChannel); if (isBlocking) { // if we are in a blocking operation, we get are now finished and we have to reset the flag. The read buffer will be returned to the instance // that initiated the write opreation - it has to parse the buffer itself theChannel = channels.getBlocking(theSocketChannel); theChannel.buffer = readBuffer; theChannel.isBlocking = false; } else { for (Channel aChannel : channelsToServe) { // if not, then we parse the buffer as ususal parseChanneledBuffer(aChannel, readBuffer); } } } else { try { logger.warn( "No channel is active or defined for the data we received from {}. It will be discarded.", theSocketChannel.getRemoteAddress()); } catch (IOException e) { logger.error( "An exception occurred while getting the remote address of the channel {} ({})", theSocketChannel, e.getMessage()); } } } } else if (selKey.isWritable()) { boolean isBlocking = channels.isBlocking(theSocketChannel); if (isBlocking) { // if this channel is already flagged as being in a blocked write/read operation, we skip this selKey } else { // pick up a QueueElement for this channel, if any WriteBufferElement theElement = null; Iterator<WriteBufferElement> iterator = writeQueue.iterator(); while (iterator.hasNext()) { WriteBufferElement anElement = iterator.next(); if (anElement.channel.channel.equals(theSocketChannel)) { theElement = anElement; break; } } if (theElement != null && theElement.buffer != null) { logger.debug("Picked {} from the queue", theElement); if (theElement.isBlocking) { theElement.channel.isBlocking = true; } boolean error = false; theElement.buffer.rewind(); try { logger.debug("Sending {} for the outbound channel {}->{}", new Object[] { new String(theElement.buffer.array()), theElement.channel.channel.getLocalAddress(), theElement.channel.channel.getRemoteAddress() }); theSocketChannel.write(theElement.buffer); } catch (NotYetConnectedException e) { logger.warn("The channel for {} has no connection pending ({})", theChannel.remote, e.getMessage()); if (!theSocketChannel.isConnectionPending()) { error = true; } } catch (ClosedChannelException e) { // If some other I/O error occurs logger.warn("The channel for {} is closed ({})", theChannel.remote, e.getMessage()); error = true; } catch (IOException e) { // If some other I/O error occurs logger.warn("The channel for {} has encountered an unknown IO Exception: {}", theChannel.remote, e.getMessage()); error = true; } if (error) { if (theElement.channel.direction == Direction.OUT) { Scheduler scheduler = null; try { scheduler = StdSchedulerFactory.getDefaultScheduler(); } catch (SchedulerException e1) { logger.error( "An exception occurred while getting the Quartz scheduler: {}", e1.getMessage()); } JobDataMap map = new JobDataMap(); map.put("Channel", theElement.channel); map.put("Binding", this); JobDetail job = newJob(ReconnectJob.class).withIdentity( Integer.toHexString(hashCode()) + "-Reconnect-" + Long.toString(System.currentTimeMillis()), "AbstractSocketChannelBinding").usingJobData(map).build(); Trigger trigger = newTrigger() .withIdentity( Integer.toHexString(hashCode()) + "-Reconnect-" + Long.toString(System.currentTimeMillis()), "AbstractSocketChannelBinding") .startAt(futureDate(reconnectInterval, IntervalUnit.SECOND)) .build(); try { if (job != null && trigger != null && selKey != listenerKey) { if (!theElement.channel.isReconnecting) { channels.setAllReconnecting(theSocketChannel, true); scheduler.scheduleJob(job, trigger); } } } catch (SchedulerException e) { logger.error( "An exception occurred while scheduling a job with the Quartz Scheduler {}", e.getMessage()); } } else { theElement.channel.channel = null; } } else { if (theElement != null) { writeQueue.remove(theElement); } } } } } } } } }
From source file:org.xchain.framework.util.IoUtil.java
public static void close(Channel channel, Logger log) { if (channel != null) { try {/* w ww . j a v a 2s .c o m*/ channel.close(); } catch (Exception e) { log.debug("An exception was thrown while closing a channel.", e); } } }