Channel concept & implementation— el Project (2)

AbstractChannelHandlerContext.java

public abstract class AbstractChannelHandlerContext implements ChannelHandlerContext {
  
  static void invokeExceptionCaught(
      final AbstractChannelHandlerContext next, final Throwable cause) {
    EventLoop eventLoop = next.eventLoop();
    if (eventLoop.inEventLoop()) {
      next.invokeExceptionCaught(cause);
    } else {
      eventLoop.execute(() -> next.invokeExceptionCaught(cause));
    }
  }
    
  @Override
  public ChannelHandlerContext fireExceptionCaught(Throwable t) {
    invokeExceptionCaught(findContextInbound(), t);
    return this;
  }
    
  private void invokeExceptionCaught(Throwable t) {
    try {
      ((ChannelInboundHandler) handler()).exceptionCaught(this, t);
    } catch (Throwable err) {
	  ...
    }
  }
}