Package org.mockserver.netty.unification

Class TraceContextHandler

java.lang.Object
io.netty.channel.ChannelHandlerAdapter
io.netty.channel.ChannelInboundHandlerAdapter
io.netty.channel.ChannelDuplexHandler
org.mockserver.netty.unification.TraceContextHandler
All Implemented Interfaces:
io.netty.channel.ChannelHandler, io.netty.channel.ChannelInboundHandler, io.netty.channel.ChannelOutboundHandler
@Sharable public class TraceContextHandler extends io.netty.channel.ChannelDuplexHandler
Netty handler that extracts W3C traceparent / tracestate headers from inbound HttpRequest objects and stores the parsed W3CTraceContext as a channel attribute. When otelPropagateTraceContext is enabled, the same headers are copied to outbound HttpResponse objects so the caller can correlate a request-response pair within its distributed trace.

This handler is ChannelHandler.Sharable because it keeps no per-channel mutable state itself — all state is stored in the channel attribute TRACE_CONTEXT.

  • Nested Class Summary

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

    io.netty.channel.ChannelHandler.Sharable

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final io.netty.util.AttributeKey<W3CTraceContext>
    TRACE_CONTEXT
    Delegates to the shared constant in mockserver-core so both the Netty handler and the core action handler use the same attribute key.

  • Constructor Summary

    Constructors
    Constructor
    Description
    TraceContextHandler(Configuration configuration)
     

  • Method Summary

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

    Methods inherited from class io.netty.channel.ChannelDuplexHandler

    bind, close, connect, deregister, disconnect, flush, read

    Methods inherited from class io.netty.channel.ChannelInboundHandlerAdapter

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

    Methods inherited from class io.netty.channel.ChannelHandlerAdapter

    ensureNotSharable, handlerAdded, handlerRemoved, 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, handlerRemoved

  • Field Details

    • TRACE_CONTEXT

      public static final io.netty.util.AttributeKey<W3CTraceContext> TRACE_CONTEXT
      Delegates to the shared constant in mockserver-core so both the Netty handler and the core action handler use the same attribute key.

  • Constructor Details

    • TraceContextHandler

      public TraceContextHandler(Configuration configuration)

  • 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

    • write

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