Package org.yamcs.http

Class HttpRequestHandler

java.lang.Object
io.netty.channel.ChannelHandlerAdapter
io.netty.channel.ChannelInboundHandlerAdapter
org.yamcs.http.HttpRequestHandler
All Implemented Interfaces:
io.netty.channel.ChannelHandler, io.netty.channel.ChannelInboundHandler
public class HttpRequestHandler extends io.netty.channel.ChannelInboundHandlerAdapter
Handles handshakes and messages. A new instance of this handler is created for every request. We have following different request types
  • static requests - sent to the fileRequestHandler - do no go higher in the netty pipeline
  • websocket requests - the pipeline is modified to add the websocket handshaker.
  • load data requests - the pipeline is modified by the respective route handler
  • standard API calls (the vast majority) - the HttpObjectAgreggator is added upstream to collect (and limit) all data from the http request in one object.
Because we support multiple http requests on one connection (keep-alive), we have to clean the pipeline when the request type changes

  • 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 String
    ANY_PATH
     
    static final Object
    CONTENT_FINISHED_EVENT
     
    static final io.netty.util.AttributeKey<RouteContext>
    CTX_CONTEXT
     
    static final io.netty.util.AttributeKey<String>
    CTX_CONTEXT_PATH
     
    static final io.netty.util.AttributeKey<io.netty.handler.codec.http.HttpRequest>
    CTX_HTTP_REQUEST
     
    static final io.netty.util.AttributeKey<String>
    CTX_USERNAME
     

  • Constructor Summary

    Constructors
    Constructor
    Description
    HttpRequestHandler(HttpServer httpServer)
     

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    channelActive(io.netty.channel.ChannelHandlerContext ctx)
     
    void
    channelRead(io.netty.channel.ChannelHandlerContext ctx, Object msg)
     
    void
    exceptionCaught(io.netty.channel.ChannelHandlerContext ctx, Throwable cause)
     
    static MediaType
    getContentType(io.netty.handler.codec.http.HttpRequest req)
     
    static <T extends com.google.protobuf.Message>
    io.netty.channel.ChannelFuture
    sendMessageResponse(io.netty.channel.ChannelHandlerContext ctx, io.netty.handler.codec.http.HttpRequest req, io.netty.handler.codec.http.HttpResponseStatus status, T responseMsg)
     
    static io.netty.channel.ChannelFuture
    sendPlainTextError(io.netty.channel.ChannelHandlerContext ctx, io.netty.handler.codec.http.HttpRequest req, io.netty.handler.codec.http.HttpResponseStatus status)
     
    static io.netty.channel.ChannelFuture
    sendPlainTextError(io.netty.channel.ChannelHandlerContext ctx, io.netty.handler.codec.http.HttpRequest req, io.netty.handler.codec.http.HttpResponseStatus status, String msg)
     
    static io.netty.channel.ChannelFuture
    sendResponse(io.netty.channel.ChannelHandlerContext ctx, io.netty.handler.codec.http.HttpRequest req, io.netty.handler.codec.http.HttpResponse response)
     

    Methods inherited from class io.netty.channel.ChannelInboundHandlerAdapter

    channelInactive, channelReadComplete, channelRegistered, channelUnregistered, channelWritabilityChanged, 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

    • ANY_PATH

      public static final String ANY_PATH
      See Also:

    • CTX_CONTEXT_PATH

      public static final io.netty.util.AttributeKey<String> CTX_CONTEXT_PATH

    • CTX_HTTP_REQUEST

      public static final io.netty.util.AttributeKey<io.netty.handler.codec.http.HttpRequest> CTX_HTTP_REQUEST

    • CTX_USERNAME

      public static final io.netty.util.AttributeKey<String> CTX_USERNAME

    • CTX_CONTEXT

      public static final io.netty.util.AttributeKey<RouteContext> CTX_CONTEXT

    • CONTENT_FINISHED_EVENT

      public static final Object CONTENT_FINISHED_EVENT

  • Constructor Details

    • HttpRequestHandler

      public HttpRequestHandler(HttpServer httpServer)

  • Method Details

    • channelActive

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

    • 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

    • exceptionCaught

      public void exceptionCaught(io.netty.channel.ChannelHandlerContext ctx, Throwable cause) throws Exception
      Specified by:
      exceptionCaught in interface io.netty.channel.ChannelHandler
      Specified by:
      exceptionCaught in interface io.netty.channel.ChannelInboundHandler
      Overrides:
      exceptionCaught in class io.netty.channel.ChannelInboundHandlerAdapter
      Throws:
      Exception

    • sendMessageResponse

      public static <T extends com.google.protobuf.Message> io.netty.channel.ChannelFuture sendMessageResponse(io.netty.channel.ChannelHandlerContext ctx, io.netty.handler.codec.http.HttpRequest req, io.netty.handler.codec.http.HttpResponseStatus status, T responseMsg)

    • sendPlainTextError

      public static io.netty.channel.ChannelFuture sendPlainTextError(io.netty.channel.ChannelHandlerContext ctx, io.netty.handler.codec.http.HttpRequest req, io.netty.handler.codec.http.HttpResponseStatus status)

    • sendPlainTextError

      public static io.netty.channel.ChannelFuture sendPlainTextError(io.netty.channel.ChannelHandlerContext ctx, io.netty.handler.codec.http.HttpRequest req, io.netty.handler.codec.http.HttpResponseStatus status, String msg)

    • sendResponse

      public static io.netty.channel.ChannelFuture sendResponse(io.netty.channel.ChannelHandlerContext ctx, io.netty.handler.codec.http.HttpRequest req, io.netty.handler.codec.http.HttpResponse response)

    • getContentType

      public static MediaType getContentType(io.netty.handler.codec.http.HttpRequest req)
      Returns:
      The Content-Type header if present or else defaults to JSON.