/**
* Detects if we're connecting to a Found Elasticsearch cluster (using pre-configured host
* suffixes) and adds a SSL handler at the beginning of the pipeline if we're connecting to a
* SSL-endpoint (using a list of pre-configured ports).
*/
@Override
public void connectRequested(final ChannelHandlerContext ctx, final ChannelStateEvent e)
throws Exception {
if (e.getValue() instanceof InetSocketAddress) {
InetSocketAddress inetSocketAddress = (InetSocketAddress) e.getValue();
for (String suffix : hostSuffixes) {
isFoundCluster = isFoundCluster || inetSocketAddress.getHostString().endsWith(suffix);
}
if (isFoundCluster) {
for (int sslPort : sslPorts) {
if (inetSocketAddress.getPort() == sslPort) {
logger.debug(
"Enabling SSL on transport layer with unsafeAllowSelfSigned=[{}].",
unsafeAllowSelfSigned);
FoundSSLHandler handler =
FoundSSLUtils.getSSLHandler(unsafeAllowSelfSigned, inetSocketAddress);
ctx.getPipeline().addFirst("ssl", handler);
break;
}
}
} else {
ctx.getPipeline().remove(this);
}
}
super.connectRequested(ctx, e);
}
public void handleDownstream(final ChannelHandlerContext context, final ChannelEvent evt)
throws Exception {
if (evt instanceof ChannelStateEvent) {
ChannelStateEvent e = (ChannelStateEvent) evt;
switch (e.getState()) {
case OPEN:
case CONNECTED:
case BOUND:
if (Boolean.FALSE.equals(e.getValue()) || e.getValue() == null) {
closeOutboundAndChannel(context, e);
return;
}
}
}
if (!(evt instanceof MessageEvent)) {
context.sendDownstream(evt);
return;
}
MessageEvent e = (MessageEvent) evt;
if (!(e.getMessage() instanceof ChannelBuffer)) {
context.sendDownstream(evt);
return;
}
// Do not encrypt the first write request if this handler is
// created with startTLS flag turned on.
if (startTls && sentFirstMessage.compareAndSet(false, true)) {
context.sendDownstream(evt);
return;
}
// Otherwise, all messages are encrypted.
ChannelBuffer msg = (ChannelBuffer) e.getMessage();
PendingWrite pendingWrite;
if (msg.readable()) {
pendingWrite =
new PendingWrite(
evt.getFuture(), msg.toByteBuffer(msg.readerIndex(), msg.readableBytes()));
} else {
pendingWrite = new PendingWrite(evt.getFuture(), null);
}
synchronized (pendingUnencryptedWrites) {
boolean offered = pendingUnencryptedWrites.offer(pendingWrite);
assert offered;
}
wrap(context, evt.getChannel());
}
/**
* Handle downstream event.
*
* @param pipeline the {@link ChannelPipeline} that passes down the downstream event.
* @param e The downstream event.
*/
@Override
public void eventSunk(final ChannelPipeline pipeline, final ChannelEvent e) throws Exception {
final NioDatagramChannel channel = (NioDatagramChannel) e.getChannel();
final ChannelFuture future = e.getFuture();
if (e instanceof ChannelStateEvent) {
final ChannelStateEvent stateEvent = (ChannelStateEvent) e;
final ChannelState state = stateEvent.getState();
final Object value = stateEvent.getValue();
switch (state) {
case OPEN:
if (Boolean.FALSE.equals(value)) {
channel.worker.close(channel, future);
}
break;
case BOUND:
if (value != null) {
bind(channel, future, (InetSocketAddress) value);
} else {
channel.worker.close(channel, future);
}
break;
case CONNECTED:
if (value != null) {
connect(channel, future, (InetSocketAddress) value);
} else {
NioDatagramWorker.disconnect(channel, future);
}
break;
case INTEREST_OPS:
channel.worker.setInterestOps(channel, future, ((Integer) value).intValue());
break;
}
} else if (e instanceof MessageEvent) {
final MessageEvent event = (MessageEvent) e;
final boolean offered = channel.writeBufferQueue.offer(event);
assert offered;
channel.worker.writeFromUserCode(channel);
}
}
public void eventSunk(ChannelPipeline pipeline, ChannelEvent e) throws Exception {
OioDatagramChannel channel = (OioDatagramChannel) e.getChannel();
ChannelFuture future = e.getFuture();
if (e instanceof ChannelStateEvent) {
ChannelStateEvent stateEvent = (ChannelStateEvent) e;
ChannelState state = stateEvent.getState();
Object value = stateEvent.getValue();
switch (state) {
case OPEN:
if (Boolean.FALSE.equals(value)) {
OioDatagramWorker.close(channel, future);
}
break;
case BOUND:
if (value != null) {
bind(channel, future, (SocketAddress) value);
} else {
OioDatagramWorker.close(channel, future);
}
break;
case CONNECTED:
if (value != null) {
connect(channel, future, (SocketAddress) value);
} else {
OioDatagramWorker.disconnect(channel, future);
}
break;
case INTEREST_OPS:
OioDatagramWorker.setInterestOps(channel, future, ((Integer) value).intValue());
break;
}
} else if (e instanceof MessageEvent) {
MessageEvent evt = (MessageEvent) e;
OioDatagramWorker.write(channel, future, evt.getMessage(), evt.getRemoteAddress());
}
}