Package org.mockserver.netty.unification

Class TcpChaosHandler

java.lang.Object
io.netty.channel.ChannelHandlerAdapter
io.netty.channel.ChannelInboundHandlerAdapter
io.netty.channel.ChannelDuplexHandler
org.mockserver.netty.unification.TcpChaosHandler
All Implemented Interfaces:
io.netty.channel.ChannelHandler, io.netty.channel.ChannelInboundHandler, io.netty.channel.ChannelOutboundHandler
public class TcpChaosHandler extends io.netty.channel.ChannelDuplexHandler
Netty ChannelDuplexHandler that injects raw TCP-layer faults before HTTP decoding, based on the TcpChaosProfile registered in TcpChaosRegistry for the connection's remote host.

Fault types mirror Toxiproxy's named toxics: latency, down, bandwidth, slow_close, timeout, reset_peer, slicer, limit_data.

Latency and bandwidth model a slow link: inbound reads join one FIFO queue per connection and are delivered in arrival order, each after the bytes ahead of it have been sent at the configured bandwidth and then the configured latency has elapsed. While more than PAUSE_READS_ABOVE_QUEUED_BYTES are queued the connection stops reading (a ChannelReadPause hold), resuming at RESUME_READS_AT_QUEUED_BYTES, so a fast sender is held back by TCP flow control, as behind a real slow link, instead of queueing without limit. Queued buffers are released when the connection closes.

This handler is not sharable (@ChannelHandler.Sharable is intentionally absent) because it maintains per-connection state.

  • Nested Class Summary

    Nested classes/interfaces inherited from interface io.netty.channel.ChannelHandler

    io.netty.channel.ChannelHandler.Sharable

  • Constructor Summary

    Constructors
    Constructor
    Description
    TcpChaosHandler()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    channelInactive(io.netty.channel.ChannelHandlerContext ctx)
     
    void
    channelRead(io.netty.channel.ChannelHandlerContext ctx, Object msg)
     
    void
    close(io.netty.channel.ChannelHandlerContext ctx, io.netty.channel.ChannelPromise promise)
     
    void
    handlerRemoved(io.netty.channel.ChannelHandlerContext ctx)
     

    Methods inherited from class io.netty.channel.ChannelDuplexHandler

    bind, connect, deregister, disconnect, flush, read, write

    Methods inherited from class io.netty.channel.ChannelInboundHandlerAdapter

    channelActive, channelReadComplete, channelRegistered, channelUnregistered, channelWritabilityChanged, exceptionCaught, userEventTriggered

    Methods inherited from class io.netty.channel.ChannelHandlerAdapter

    ensureNotSharable, handlerAdded, isSharable

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    Methods inherited from interface io.netty.channel.ChannelHandler

    handlerAdded

  • Constructor Details

    • TcpChaosHandler

      public TcpChaosHandler()

  • Method Details

    • channelRead

      public void channelRead(io.netty.channel.ChannelHandlerContext ctx, Object msg) throws Exception
      Specified by:
      channelRead in interface io.netty.channel.ChannelInboundHandler
      Overrides:
      channelRead in class io.netty.channel.ChannelInboundHandlerAdapter
      Throws:
      Exception

    • channelInactive

      public void channelInactive(io.netty.channel.ChannelHandlerContext ctx) throws Exception
      Specified by:
      channelInactive in interface io.netty.channel.ChannelInboundHandler
      Overrides:
      channelInactive in class io.netty.channel.ChannelInboundHandlerAdapter
      Throws:
      Exception

    • handlerRemoved

      public void handlerRemoved(io.netty.channel.ChannelHandlerContext ctx)
      Specified by:
      handlerRemoved in interface io.netty.channel.ChannelHandler
      Overrides:
      handlerRemoved in class io.netty.channel.ChannelHandlerAdapter

    • close

      public void close(io.netty.channel.ChannelHandlerContext ctx, io.netty.channel.ChannelPromise promise) throws Exception
      Specified by:
      close in interface io.netty.channel.ChannelOutboundHandler
      Overrides:
      close in class io.netty.channel.ChannelDuplexHandler
      Throws:
      Exception