org.apache.flink.runtime.rest.handler.util.HandlerUtils Java Examples

The following examples show how to use org.apache.flink.runtime.rest.handler.util.HandlerUtils. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source Project: Flink-CEPplus   Author: ljygz   File: AbstractHandler.java    License: Apache License 2.0 6 votes vote down vote up
private CompletableFuture<Void> handleException(Throwable throwable, ChannelHandlerContext ctx, HttpRequest httpRequest) {
	if (throwable instanceof RestHandlerException) {
		RestHandlerException rhe = (RestHandlerException) throwable;
		if (log.isDebugEnabled()) {
			log.error("Exception occurred in REST handler.", rhe);
		} else {
			log.error("Exception occurred in REST handler: {}", rhe.getMessage());
		}
		return HandlerUtils.sendErrorResponse(
			ctx,
			httpRequest,
			new ErrorResponseBody(rhe.getMessage()),
			rhe.getHttpResponseStatus(),
			responseHeaders);
	} else {
		log.error("Unhandled exception.", throwable);
		String stackTrace = String.format("<Exception on server side:%n%s%nEnd of exception on server side>",
			ExceptionUtils.stringifyException(throwable));
		return HandlerUtils.sendErrorResponse(
			ctx,
			httpRequest,
			new ErrorResponseBody(Arrays.asList("Internal server error.", stackTrace)),
			HttpResponseStatus.INTERNAL_SERVER_ERROR,
			responseHeaders);
	}
}
 
Example #2
Source Project: Flink-CEPplus   Author: ljygz   File: FlinkHttpObjectAggregator.java    License: Apache License 2.0 6 votes vote down vote up
@Override
protected void decode(
		final ChannelHandlerContext ctx,
		final HttpObject msg,
		final List<Object> out) throws Exception {

	try {
		super.decode(ctx, msg, out);
	} catch (final TooLongFrameException e) {
		HandlerUtils.sendErrorResponse(
			ctx,
			false,
			new ErrorResponseBody(String.format(
				e.getMessage() + " Try to raise [%s]",
				RestOptions.SERVER_MAX_CONTENT_LENGTH.key())),
			HttpResponseStatus.REQUEST_ENTITY_TOO_LARGE,
			responseHeaders);
	}
}
 
Example #3
Source Project: flink   Author: flink-tpc-ds   File: FlinkHttpObjectAggregator.java    License: Apache License 2.0 6 votes vote down vote up
@Override
protected void decode(
		final ChannelHandlerContext ctx,
		final HttpObject msg,
		final List<Object> out) throws Exception {

	try {
		super.decode(ctx, msg, out);
	} catch (final TooLongFrameException e) {
		HandlerUtils.sendErrorResponse(
			ctx,
			false,
			new ErrorResponseBody(String.format(
				e.getMessage() + " Try to raise [%s]",
				RestOptions.SERVER_MAX_CONTENT_LENGTH.key())),
			HttpResponseStatus.REQUEST_ENTITY_TOO_LARGE,
			responseHeaders);
	}
}
 
Example #4
Source Project: flink   Author: apache   File: StaticFileServerHandler.java    License: Apache License 2.0 6 votes vote down vote up
@Override
protected void respondAsLeader(ChannelHandlerContext channelHandlerContext, RoutedRequest routedRequest, T gateway) throws Exception {
	final HttpRequest request = routedRequest.getRequest();
	final String requestPath;

	// make sure we request the "index.html" in case there is a directory request
	if (routedRequest.getPath().endsWith("/")) {
		requestPath = routedRequest.getPath() + "index.html";
	} else {
		requestPath = routedRequest.getPath();
	}

	try {
		respondToRequest(channelHandlerContext, request, requestPath);
	} catch (RestHandlerException rhe) {
		HandlerUtils.sendErrorResponse(
			channelHandlerContext,
			routedRequest.getRequest(),
			new ErrorResponseBody(rhe.getMessage()),
			rhe.getHttpResponseStatus(),
			responseHeaders);
	}
}
 
Example #5
Source Project: flink   Author: apache   File: AbstractJobManagerFileHandler.java    License: Apache License 2.0 6 votes vote down vote up
@Override
protected CompletableFuture<Void> respondToRequest(ChannelHandlerContext ctx, HttpRequest httpRequest, HandlerRequest<EmptyRequestBody, M> handlerRequest, RestfulGateway gateway) {
	File file = getFile(handlerRequest);
	if (file != null && file.exists()) {
		try {
			HandlerUtils.transferFile(
				ctx,
				file,
				httpRequest);
		} catch (FlinkException e) {
			throw new CompletionException(new FlinkException("Could not transfer file to client.", e));
		}
		return CompletableFuture.completedFuture(null);
	} else {
		return HandlerUtils.sendErrorResponse(
			ctx,
			httpRequest,
			new ErrorResponseBody("This file does not exist in JobManager log dir."),
			HttpResponseStatus.NOT_FOUND,
			Collections.emptyMap());
	}
}
 
Example #6
Source Project: flink   Author: apache   File: FlinkHttpObjectAggregator.java    License: Apache License 2.0 6 votes vote down vote up
@Override
protected void decode(
		final ChannelHandlerContext ctx,
		final HttpObject msg,
		final List<Object> out) throws Exception {

	try {
		super.decode(ctx, msg, out);
	} catch (final TooLongFrameException e) {
		HandlerUtils.sendErrorResponse(
			ctx,
			false,
			new ErrorResponseBody(String.format(
				e.getMessage() + " Try to raise [%s]",
				RestOptions.SERVER_MAX_CONTENT_LENGTH.key())),
			HttpResponseStatus.REQUEST_ENTITY_TOO_LARGE,
			responseHeaders);
	}
}
 
Example #7
Source Project: Flink-CEPplus   Author: ljygz   File: HistoryServerStaticFileServerHandler.java    License: Apache License 2.0 5 votes vote down vote up
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
	if (ctx.channel().isActive()) {
		LOG.error("Caught exception", cause);
		HandlerUtils.sendErrorResponse(
			ctx,
			false,
			new ErrorResponseBody("Internal server error."),
			INTERNAL_SERVER_ERROR,
			Collections.emptyMap());
	}
}
 
Example #8
Source Project: Flink-CEPplus   Author: ljygz   File: FileUploadHandler.java    License: Apache License 2.0 5 votes vote down vote up
private void handleError(ChannelHandlerContext ctx, String errorMessage, HttpResponseStatus responseStatus, @Nullable Throwable e) {
	HttpRequest tmpRequest = currentHttpRequest;
	deleteUploadedFiles();
	reset();
	LOG.warn(errorMessage, e);
	HandlerUtils.sendErrorResponse(
		ctx,
		tmpRequest,
		new ErrorResponseBody(errorMessage),
		responseStatus,
		Collections.emptyMap()
	);
	ReferenceCountUtil.release(tmpRequest);
}
 
Example #9
Source Project: Flink-CEPplus   Author: ljygz   File: StaticFileServerHandler.java    License: Apache License 2.0 5 votes vote down vote up
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
	if (ctx.channel().isActive()) {
		logger.error("Caught exception", cause);
		HandlerUtils.sendErrorResponse(
			ctx,
			false,
			new ErrorResponseBody("Internal server error."),
			INTERNAL_SERVER_ERROR,
			Collections.emptyMap());
	}
}
 
Example #10
Source Project: Flink-CEPplus   Author: ljygz   File: LeaderRetrievalHandler.java    License: Apache License 2.0 5 votes vote down vote up
@Override
protected void channelRead0(
	ChannelHandlerContext channelHandlerContext,
	RoutedRequest routedRequest) {

	HttpRequest request = routedRequest.getRequest();

	OptionalConsumer<? extends T> optLeaderConsumer = OptionalConsumer.of(leaderRetriever.getNow());

	optLeaderConsumer.ifPresent(
		gateway -> {
			try {
				respondAsLeader(channelHandlerContext, routedRequest, gateway);
			} catch (Exception e) {
				logger.error("Error while responding to the http request.", e);
				HandlerUtils.sendErrorResponse(
					channelHandlerContext,
					request,
					new ErrorResponseBody("Error while responding to the http request."),
					HttpResponseStatus.INTERNAL_SERVER_ERROR,
					responseHeaders);
			}
		}
	).ifNotPresent(
		() ->
			HandlerUtils.sendErrorResponse(
				channelHandlerContext,
				request,
				new ErrorResponseBody("Service temporarily unavailable due to an ongoing leader election. Please refresh."),
				HttpResponseStatus.SERVICE_UNAVAILABLE,
				responseHeaders));
}
 
Example #11
Source Project: Flink-CEPplus   Author: ljygz   File: AbstractRestHandler.java    License: Apache License 2.0 5 votes vote down vote up
@Override
protected CompletableFuture<Void> respondToRequest(ChannelHandlerContext ctx, HttpRequest httpRequest, HandlerRequest<R, M> handlerRequest, T gateway) {
	CompletableFuture<P> response;

	try {
		response = handleRequest(handlerRequest, gateway);
	} catch (RestHandlerException e) {
		response = FutureUtils.completedExceptionally(e);
	}

	return response.thenAccept(resp -> HandlerUtils.sendResponse(ctx, httpRequest, resp, messageHeaders.getResponseStatusCode(), responseHeaders));
}
 
Example #12
Source Project: Flink-CEPplus   Author: ljygz   File: PipelineErrorHandler.java    License: Apache License 2.0 5 votes vote down vote up
@Override
protected void channelRead0(ChannelHandlerContext ctx, HttpRequest message) {
	// we can't deal with this message. No one in the pipeline handled it. Log it.
	logger.warn("Unknown message received: {}", message);
	HandlerUtils.sendErrorResponse(
		ctx,
		message,
		new ErrorResponseBody("Bad request received."),
		HttpResponseStatus.BAD_REQUEST,
		Collections.emptyMap());
}
 
Example #13
Source Project: Flink-CEPplus   Author: ljygz   File: PipelineErrorHandler.java    License: Apache License 2.0 5 votes vote down vote up
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
	logger.warn("Unhandled exception", cause);
	HandlerUtils.sendErrorResponse(
		ctx,
		false,
		new ErrorResponseBody("Internal server error: " + cause.getMessage()),
		HttpResponseStatus.INTERNAL_SERVER_ERROR,
		responseHeaders);
}
 
Example #14
Source Project: Flink-CEPplus   Author: ljygz   File: RouterHandler.java    License: Apache License 2.0 5 votes vote down vote up
private void respondNotFound(ChannelHandlerContext channelHandlerContext, HttpRequest request) {
	LOG.trace("Request could not be routed to any handler. Uri:{} Method:{}", request.getUri(), request.getMethod());
	HandlerUtils.sendErrorResponse(
		channelHandlerContext,
		request,
		new ErrorResponseBody("Not found."),
		HttpResponseStatus.NOT_FOUND,
		responseHeaders);
}
 
Example #15
Source Project: flink   Author: flink-tpc-ds   File: HistoryServerStaticFileServerHandler.java    License: Apache License 2.0 5 votes vote down vote up
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
	if (ctx.channel().isActive()) {
		LOG.error("Caught exception", cause);
		HandlerUtils.sendErrorResponse(
			ctx,
			false,
			new ErrorResponseBody("Internal server error."),
			INTERNAL_SERVER_ERROR,
			Collections.emptyMap());
	}
}
 
Example #16
Source Project: flink   Author: flink-tpc-ds   File: FileUploadHandler.java    License: Apache License 2.0 5 votes vote down vote up
private void handleError(ChannelHandlerContext ctx, String errorMessage, HttpResponseStatus responseStatus, @Nullable Throwable e) {
	HttpRequest tmpRequest = currentHttpRequest;
	deleteUploadedFiles();
	reset();
	LOG.warn(errorMessage, e);
	HandlerUtils.sendErrorResponse(
		ctx,
		tmpRequest,
		new ErrorResponseBody(errorMessage),
		responseStatus,
		Collections.emptyMap()
	);
	ReferenceCountUtil.release(tmpRequest);
}
 
Example #17
Source Project: flink   Author: flink-tpc-ds   File: StaticFileServerHandler.java    License: Apache License 2.0 5 votes vote down vote up
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
	if (ctx.channel().isActive()) {
		logger.error("Caught exception", cause);
		HandlerUtils.sendErrorResponse(
			ctx,
			false,
			new ErrorResponseBody("Internal server error."),
			INTERNAL_SERVER_ERROR,
			Collections.emptyMap());
	}
}
 
Example #18
Source Project: flink   Author: flink-tpc-ds   File: LeaderRetrievalHandler.java    License: Apache License 2.0 5 votes vote down vote up
@Override
protected void channelRead0(
	ChannelHandlerContext channelHandlerContext,
	RoutedRequest routedRequest) {

	HttpRequest request = routedRequest.getRequest();

	OptionalConsumer<? extends T> optLeaderConsumer = OptionalConsumer.of(leaderRetriever.getNow());

	optLeaderConsumer.ifPresent(
		gateway -> {
			try {
				respondAsLeader(channelHandlerContext, routedRequest, gateway);
			} catch (Exception e) {
				logger.error("Error while responding to the http request.", e);
				HandlerUtils.sendErrorResponse(
					channelHandlerContext,
					request,
					new ErrorResponseBody("Error while responding to the http request."),
					HttpResponseStatus.INTERNAL_SERVER_ERROR,
					responseHeaders);
			}
		}
	).ifNotPresent(
		() ->
			HandlerUtils.sendErrorResponse(
				channelHandlerContext,
				request,
				new ErrorResponseBody("Service temporarily unavailable due to an ongoing leader election. Please refresh."),
				HttpResponseStatus.SERVICE_UNAVAILABLE,
				responseHeaders));
}
 
Example #19
Source Project: flink   Author: flink-tpc-ds   File: AbstractRestHandler.java    License: Apache License 2.0 5 votes vote down vote up
@Override
protected CompletableFuture<Void> respondToRequest(ChannelHandlerContext ctx, HttpRequest httpRequest, HandlerRequest<R, M> handlerRequest, T gateway) {
	CompletableFuture<P> response;

	try {
		response = handleRequest(handlerRequest, gateway);
	} catch (RestHandlerException e) {
		response = FutureUtils.completedExceptionally(e);
	}

	return response.thenAccept(resp -> HandlerUtils.sendResponse(ctx, httpRequest, resp, messageHeaders.getResponseStatusCode(), responseHeaders));
}
 
Example #20
Source Project: flink   Author: flink-tpc-ds   File: PipelineErrorHandler.java    License: Apache License 2.0 5 votes vote down vote up
@Override
protected void channelRead0(ChannelHandlerContext ctx, HttpRequest message) {
	// we can't deal with this message. No one in the pipeline handled it. Log it.
	logger.warn("Unknown message received: {}", message);
	HandlerUtils.sendErrorResponse(
		ctx,
		message,
		new ErrorResponseBody("Bad request received."),
		HttpResponseStatus.BAD_REQUEST,
		Collections.emptyMap());
}
 
Example #21
Source Project: flink   Author: flink-tpc-ds   File: PipelineErrorHandler.java    License: Apache License 2.0 5 votes vote down vote up
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
	logger.warn("Unhandled exception", cause);
	HandlerUtils.sendErrorResponse(
		ctx,
		false,
		new ErrorResponseBody("Internal server error: " + cause.getMessage()),
		HttpResponseStatus.INTERNAL_SERVER_ERROR,
		responseHeaders);
}
 
Example #22
Source Project: flink   Author: flink-tpc-ds   File: RouterHandler.java    License: Apache License 2.0 5 votes vote down vote up
private void respondNotFound(ChannelHandlerContext channelHandlerContext, HttpRequest request) {
	LOG.trace("Request could not be routed to any handler. Uri:{} Method:{}", request.getUri(), request.getMethod());
	HandlerUtils.sendErrorResponse(
		channelHandlerContext,
		request,
		new ErrorResponseBody("Not found."),
		HttpResponseStatus.NOT_FOUND,
		responseHeaders);
}
 
Example #23
Source Project: flink   Author: apache   File: HistoryServerStaticFileServerHandler.java    License: Apache License 2.0 5 votes vote down vote up
@Override
public void channelRead0(ChannelHandlerContext ctx, RoutedRequest routedRequest) throws Exception {
	String requestPath = routedRequest.getPath();

	try {
		respondWithFile(ctx, routedRequest.getRequest(), requestPath);
	} catch (RestHandlerException rhe) {
		HandlerUtils.sendErrorResponse(
			ctx,
			routedRequest.getRequest(),
			new ErrorResponseBody(rhe.getMessage()),
			rhe.getHttpResponseStatus(),
			Collections.emptyMap());
	}
}
 
Example #24
Source Project: flink   Author: apache   File: HistoryServerStaticFileServerHandler.java    License: Apache License 2.0 5 votes vote down vote up
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
	if (ctx.channel().isActive()) {
		LOG.error("Caught exception", cause);
		HandlerUtils.sendErrorResponse(
			ctx,
			false,
			new ErrorResponseBody("Internal server error."),
			INTERNAL_SERVER_ERROR,
			Collections.emptyMap());
	}
}
 
Example #25
Source Project: flink   Author: apache   File: FileUploadHandler.java    License: Apache License 2.0 5 votes vote down vote up
private void handleError(ChannelHandlerContext ctx, String errorMessage, HttpResponseStatus responseStatus, @Nullable Throwable e) {
	HttpRequest tmpRequest = currentHttpRequest;
	deleteUploadedFiles();
	reset();
	LOG.warn(errorMessage, e);
	HandlerUtils.sendErrorResponse(
		ctx,
		tmpRequest,
		new ErrorResponseBody(errorMessage),
		responseStatus,
		Collections.emptyMap()
	);
	ReferenceCountUtil.release(tmpRequest);
}
 
Example #26
Source Project: flink   Author: apache   File: StaticFileServerHandler.java    License: Apache License 2.0 5 votes vote down vote up
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
	if (ctx.channel().isActive()) {
		logger.error("Caught exception", cause);
		HandlerUtils.sendErrorResponse(
			ctx,
			false,
			new ErrorResponseBody("Internal server error."),
			INTERNAL_SERVER_ERROR,
			Collections.emptyMap());
	}
}
 
Example #27
Source Project: flink   Author: apache   File: LeaderRetrievalHandler.java    License: Apache License 2.0 5 votes vote down vote up
@Override
protected void channelRead0(
	ChannelHandlerContext channelHandlerContext,
	RoutedRequest routedRequest) {

	HttpRequest request = routedRequest.getRequest();

	OptionalConsumer<? extends T> optLeaderConsumer = OptionalConsumer.of(leaderRetriever.getNow());

	optLeaderConsumer.ifPresent(
		gateway -> {
			try {
				respondAsLeader(channelHandlerContext, routedRequest, gateway);
			} catch (Exception e) {
				logger.error("Error while responding to the http request.", e);
				HandlerUtils.sendErrorResponse(
					channelHandlerContext,
					request,
					new ErrorResponseBody("Error while responding to the http request."),
					HttpResponseStatus.INTERNAL_SERVER_ERROR,
					responseHeaders);
			}
		}
	).ifNotPresent(
		() ->
			HandlerUtils.sendErrorResponse(
				channelHandlerContext,
				request,
				new ErrorResponseBody("Service temporarily unavailable due to an ongoing leader election. Please refresh."),
				HttpResponseStatus.SERVICE_UNAVAILABLE,
				responseHeaders));
}
 
Example #28
Source Project: flink   Author: apache   File: AbstractRestHandler.java    License: Apache License 2.0 5 votes vote down vote up
@Override
protected CompletableFuture<Void> respondToRequest(ChannelHandlerContext ctx, HttpRequest httpRequest, HandlerRequest<R, M> handlerRequest, T gateway) {
	CompletableFuture<P> response;

	try {
		response = handleRequest(handlerRequest, gateway);
	} catch (RestHandlerException e) {
		response = FutureUtils.completedExceptionally(e);
	}

	return response.thenAccept(resp -> HandlerUtils.sendResponse(ctx, httpRequest, resp, messageHeaders.getResponseStatusCode(), responseHeaders));
}
 
Example #29
Source Project: flink   Author: apache   File: PipelineErrorHandler.java    License: Apache License 2.0 5 votes vote down vote up
@Override
protected void channelRead0(ChannelHandlerContext ctx, HttpRequest message) {
	// we can't deal with this message. No one in the pipeline handled it. Log it.
	logger.warn("Unknown message received: {}", message);
	HandlerUtils.sendErrorResponse(
		ctx,
		message,
		new ErrorResponseBody("Bad request received."),
		HttpResponseStatus.BAD_REQUEST,
		Collections.emptyMap());
}
 
Example #30
Source Project: flink   Author: apache   File: PipelineErrorHandler.java    License: Apache License 2.0 5 votes vote down vote up
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
	logger.warn("Unhandled exception", cause);
	HandlerUtils.sendErrorResponse(
		ctx,
		false,
		new ErrorResponseBody("Internal server error: " + cause.getMessage()),
		HttpResponseStatus.INTERNAL_SERVER_ERROR,
		responseHeaders);
}