Examples with Handler ratpack.handling.Handler used on opensource projects

Example 1 with Handler

use of ratpack.handling.Handler in project ratpack by ratpack.

the class DefaultRatpackServer method buildAdapter.

protected NettyHandlerAdapter buildAdapter(DefinitionBuild definition) throws Exception {
    LOGGER.info("Building registry...");
    serverRegistry = buildServerRegistry(definition.getServerConfig(), definition.getUserRegistryFactory());
    Handler ratpackHandler = buildRatpackHandler(serverRegistry, definition.getHandlerFactory());
    ratpackHandler = decorateHandler(ratpackHandler, serverRegistry);
    servicesGraph = new ServicesGraph(serverRegistry);
    servicesGraph.start(new DefaultEvent(serverRegistry, reloading));
    return new NettyHandlerAdapter(serverRegistry, ratpackHandler);
}

Example 2 with Handler

use of ratpack.handling.Handler in project ratpack by ratpack.

the class NettyHandlerAdapter method newRequest.

private void newRequest(final ChannelHandlerContext ctx, final HttpRequest nettyRequest) throws Exception {
    if (!nettyRequest.decoderResult().isSuccess()) {
        sendError(ctx, HttpResponseStatus.BAD_REQUEST);
        return;
    }
    Headers requestHeaders = new NettyHeadersBackedHeaders(nettyRequest.headers());
    //Find the content length we will use this as an indicator of a body
    Long contentLength = HttpUtil.getContentLength(nettyRequest, -1L);
    String transferEncoding = requestHeaders.get(HttpHeaderNames.TRANSFER_ENCODING);
    //If there is a content length or transfer encoding that indicates there is a body
    boolean hasBody = (contentLength > 0) || (transferEncoding != null);
    RequestBody requestBody = hasBody ? new RequestBody(contentLength, nettyRequest, ctx) : null;
    final Channel channel = ctx.channel();
    if (requestBody != null) {
        channel.attr(BODY_ACCUMULATOR_KEY).set(requestBody);
    }
    InetSocketAddress remoteAddress = (InetSocketAddress) channel.remoteAddress();
    InetSocketAddress socketAddress = (InetSocketAddress) channel.localAddress();
    final DefaultRequest request = new DefaultRequest(Instant.now(), requestHeaders, nettyRequest.method(), nettyRequest.protocolVersion(), nettyRequest.uri(), remoteAddress, socketAddress, serverRegistry.get(ServerConfig.class), requestBody);
    final HttpHeaders nettyHeaders = new DefaultHttpHeaders(false);
    final MutableHeaders responseHeaders = new NettyHeadersBackedMutableHeaders(nettyHeaders);
    final AtomicBoolean transmitted = new AtomicBoolean(false);
    final DefaultResponseTransmitter responseTransmitter = new DefaultResponseTransmitter(transmitted, channel, nettyRequest, request, nettyHeaders, requestBody);
    ctx.channel().attr(DefaultResponseTransmitter.ATTRIBUTE_KEY).set(responseTransmitter);
    Action<Action<Object>> subscribeHandler = thing -> {
        transmitted.set(true);
        ctx.channel().attr(CHANNEL_SUBSCRIBER_ATTRIBUTE_KEY).set(thing);
    };
    final DefaultContext.RequestConstants requestConstants = new DefaultContext.RequestConstants(applicationConstants, request, channel, responseTransmitter, subscribeHandler);
    final Response response = new DefaultResponse(responseHeaders, ctx.alloc(), responseTransmitter);
    requestConstants.response = response;
    DefaultContext.start(channel.eventLoop(), requestConstants, serverRegistry, handlers, execution -> {
        if (requestBody != null) {
            requestBody.close();
            channel.attr(BODY_ACCUMULATOR_KEY).set(null);
        }
        if (!transmitted.get()) {
            Handler lastHandler = requestConstants.handler;
            StringBuilder description = new StringBuilder();
            description.append("No response sent for ").append(request.getMethod().getName()).append(" request to ").append(request.getUri());
            if (lastHandler != null) {
                description.append(" (last handler: ");
                if (lastHandler instanceof DescribingHandler) {
                    ((DescribingHandler) lastHandler).describeTo(description);
                } else {
                    DescribingHandlers.describeTo(lastHandler, description);
                }
                description.append(")");
            }
            String message = description.toString();
            LOGGER.warn(message);
            response.getHeaders().clear();
            ByteBuf body;
            if (development) {
                CharBuffer charBuffer = CharBuffer.wrap(message);
                body = ByteBufUtil.encodeString(ctx.alloc(), charBuffer, CharsetUtil.UTF_8);
                response.contentType(HttpHeaderConstants.PLAIN_TEXT_UTF8);
            } else {
                body = Unpooled.EMPTY_BUFFER;
            }
            response.getHeaders().set(HttpHeaderConstants.CONTENT_LENGTH, body.readableBytes());
            responseTransmitter.transmit(HttpResponseStatus.INTERNAL_SERVER_ERROR, body);
        }
    });
}

Example 3 with Handler

use of ratpack.handling.Handler in project ratpack by ratpack.

the class DescribingHandlers method describeTo.

public static void describeTo(Handler handler, StringBuilder stringBuilder) {
    Class<? extends Handler> clazz = handler.getClass();
    if (clazz.isAnonymousClass()) {
        ClassPool pool = ClassPool.getDefault();
        CtClass ctClass;
        try {
            ctClass = pool.get(clazz.getName());
            CtBehavior[] behaviors = ctClass.getDeclaredBehaviors();
            List<CtBehavior> withLineNumber = Arrays.asList(behaviors).stream().filter(input -> input.getMethodInfo().getLineNumber(0) > 0).sorted((o1, o2) -> Integer.valueOf(o1.getMethodInfo().getLineNumber(0)).compareTo(o2.getMethodInfo().getLineNumber(0))).collect(Collectors.toList());
            if (!withLineNumber.isEmpty()) {
                CtBehavior method = withLineNumber.get(0);
                int lineNumber = method.getMethodInfo().getLineNumber(0);
                ClassFile classFile = ctClass.getClassFile();
                String sourceFile = classFile.getSourceFile();
                if (lineNumber != -1 && sourceFile != null) {
                    stringBuilder.append("anonymous class ").append(clazz.getName()).append(" at approximately line ").append(lineNumber).append(" of ").append(sourceFile);
                    return;
                }
            }
        } catch (NotFoundException ignore) {
        // fall through
        }
    }
    stringBuilder.append(clazz.getName());
}

Example 4 with Handler

use of ratpack.handling.Handler in project ratpack by ratpack.

the class FactoryHandler method handle.

@Override
public void handle(Context context) throws Exception {
    Handler handler = factory.create();
    last = handler;
    handler.handle(context);
}

Example 5 with Handler

use of ratpack.handling.Handler in project ratpack by ratpack.

the class DefaultFileHandlerSpec method build.

public static Handler build(ServerConfig serverConfig, Action<? super FileHandlerSpec> config) throws Exception {
    if (!serverConfig.isHasBaseDir()) {
        throw new BaseDirRequiredException("no base dir set for application");
    }
    DefaultFileHandlerSpec spec = new DefaultFileHandlerSpec();
    config.execute(spec);
    Handler handler = new FileHandler(spec.indexFiles, !serverConfig.isDevelopment());
    if (spec.dir != null) {
        handler = Handlers.fileSystem(serverConfig, spec.dir, handler);
    }
    if (spec.path != null) {
        handler = Handlers.prefix(spec.path, handler);
    }
    return handler;
}