77 lines
2.9 KiB
Scala
77 lines
2.9 KiB
Scala
package net.abhinavsarkar.ircsearch
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import com.typesafe.scalalogging.slf4j.Logging
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import io.netty.buffer.Unpooled
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import io.netty.channel.{ ChannelFutureListener, ChannelHandlerContext, ChannelInboundMessageHandlerAdapter }
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import io.netty.handler.codec.http.{ DefaultHttpResponse, HttpHeaders, HttpRequest, HttpResponse }
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import io.netty.handler.codec.http.HttpHeaders.Names._
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import io.netty.handler.codec.http.HttpHeaders.isKeepAlive
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import io.netty.handler.codec.http.HttpResponseStatus._
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import io.netty.handler.codec.http.HttpVersion.HTTP_1_1
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trait HttpRequestHandler extends ChannelInboundMessageHandlerAdapter[HttpRequest] with Logging {
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protected def sendDefaultResponse(ctx : ChannelHandlerContext, request : HttpRequest) : HttpResponse = {
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val response = new DefaultHttpResponse(
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HTTP_1_1, if (request.getDecoderResult.isSuccess) OK else BAD_REQUEST)
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writeResponse(ctx, request, response)
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response
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}
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protected def sendNotFound(ctx : ChannelHandlerContext, request : HttpRequest) : HttpResponse = {
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val response = new DefaultHttpResponse(HTTP_1_1, NOT_FOUND)
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writeResponse(ctx, request, response)
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response
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}
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private def sendReponse(ctx: ChannelHandlerContext, request: HttpRequest,
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response: HttpResponse, body: String): HttpResponse = {
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response.setContent(Unpooled.copiedBuffer(body.getBytes))
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response.setHeader(CONTENT_TYPE, "application/json")
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writeResponse(ctx, request, response)
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response
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}
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protected def sendSuccess(ctx : ChannelHandlerContext, request : HttpRequest, body : String) = {
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sendReponse(ctx, request, new DefaultHttpResponse(HTTP_1_1, OK), body)
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}
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protected def sendServerError(ctx : ChannelHandlerContext, request : HttpRequest, body : String) = {
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sendReponse(ctx, request, new DefaultHttpResponse(HTTP_1_1, INTERNAL_SERVER_ERROR), body)
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}
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protected def sendClientError(ctx : ChannelHandlerContext, request : HttpRequest, body : String) = {
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sendReponse(ctx, request, new DefaultHttpResponse(HTTP_1_1, BAD_REQUEST), body)
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}
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protected def writeResponse(
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ctx : ChannelHandlerContext, request : HttpRequest, response : HttpResponse) {
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response.setHeader(CONTENT_LENGTH, response.getContent().readableBytes())
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if (isKeepAlive(request)) {
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response.setHeader(CONNECTION, HttpHeaders.Values.KEEP_ALIVE)
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}
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val future = ctx.write(response)
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if (!isKeepAlive(request) || response.getStatus().getCode() != 200) {
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future.addListener(ChannelFutureListener.CLOSE)
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}
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}
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protected def logRequest(ctx: ChannelHandlerContext, request: HttpRequest, response: HttpResponse) {
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logger.info("{} {} {} {}",
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response.getStatus().getCode() : Integer,
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request.getMethod(),
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request.getUri(),
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ctx.channel().remoteAddress())
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}
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override def exceptionCaught(ctx : ChannelHandlerContext, cause : Throwable) {
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logger.warn("Exception in handling request", cause)
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ctx.close()
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}
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} |