Examples with ErrorResponseBody org.apache.flink.runtime.rest.messages.ErrorResponseBody used on opensource projects

Example 1 with ErrorResponseBody

use of org.apache.flink.runtime.rest.messages.ErrorResponseBody in project flink by apache.

the class HistoryServerStaticFileServerHandler method respondWithFile.

/**
 * Response when running with leading JobManager.
 */
private void respondWithFile(ChannelHandlerContext ctx, HttpRequest request, String requestPath) throws IOException, ParseException, RestHandlerException {
    // make sure we request the "index.html" in case there is a directory request
    if (requestPath.endsWith("/")) {
        requestPath = requestPath + "index.html";
    }
    if (!requestPath.contains(".")) {
        // we assume that the path ends in either .html or .js
        requestPath = requestPath + ".json";
    }
    // convert to absolute path
    final File file = new File(rootPath, requestPath);
    if (!file.exists()) {
        // file does not exist. Try to load it with the classloader
        ClassLoader cl = HistoryServerStaticFileServerHandler.class.getClassLoader();
        try (InputStream resourceStream = cl.getResourceAsStream("web" + requestPath)) {
            boolean success = false;
            try {
                if (resourceStream != null) {
                    URL root = cl.getResource("web");
                    URL requested = cl.getResource("web" + requestPath);
                    if (root != null && requested != null) {
                        URI rootURI = new URI(root.getPath()).normalize();
                        URI requestedURI = new URI(requested.getPath()).normalize();
                        // expected scope.
                        if (!rootURI.relativize(requestedURI).equals(requestedURI)) {
                            LOG.debug("Loading missing file from classloader: {}", requestPath);
                            // ensure that directory to file exists.
                            file.getParentFile().mkdirs();
                            Files.copy(resourceStream, file.toPath());
                            success = true;
                        }
                    }
                }
            } catch (Throwable t) {
                LOG.error("error while responding", t);
            } finally {
                if (!success) {
                    LOG.debug("Unable to load requested file {} from classloader", requestPath);
                    throw new NotFoundException("File not found.");
                }
            }
        }
    }
    StaticFileServerHandler.checkFileValidity(file, rootPath, LOG);
    // cache validation
    final String ifModifiedSince = request.headers().get(IF_MODIFIED_SINCE);
    if (ifModifiedSince != null && !ifModifiedSince.isEmpty()) {
        SimpleDateFormat dateFormatter = new SimpleDateFormat(StaticFileServerHandler.HTTP_DATE_FORMAT, Locale.US);
        Date ifModifiedSinceDate = dateFormatter.parse(ifModifiedSince);
        // Only compare up to the second because the datetime format we send to the client
        // does not have milliseconds
        long ifModifiedSinceDateSeconds = ifModifiedSinceDate.getTime() / 1000;
        long fileLastModifiedSeconds = file.lastModified() / 1000;
        if (ifModifiedSinceDateSeconds == fileLastModifiedSeconds) {
            if (LOG.isDebugEnabled()) {
                LOG.debug("Responding 'NOT MODIFIED' for file '" + file.getAbsolutePath() + '\'');
            }
            StaticFileServerHandler.sendNotModified(ctx);
            return;
        }
    }
    if (LOG.isDebugEnabled()) {
        LOG.debug("Responding with file '" + file.getAbsolutePath() + '\'');
    }
    // Don't need to close this manually. Netty's DefaultFileRegion will take care of it.
    final RandomAccessFile raf;
    try {
        raf = new RandomAccessFile(file, "r");
    } catch (FileNotFoundException e) {
        if (LOG.isDebugEnabled()) {
            LOG.debug("Could not find file {}.", file.getAbsolutePath());
        }
        HandlerUtils.sendErrorResponse(ctx, request, new ErrorResponseBody("File not found."), NOT_FOUND, Collections.emptyMap());
        return;
    }
    try {
        long fileLength = raf.length();
        HttpResponse response = new DefaultHttpResponse(HTTP_1_1, OK);
        StaticFileServerHandler.setContentTypeHeader(response, file);
        // the job overview should be updated as soon as possible
        if (!requestPath.equals("/joboverview.json")) {
            StaticFileServerHandler.setDateAndCacheHeaders(response, file);
        }
        if (HttpHeaders.isKeepAlive(request)) {
            response.headers().set(CONNECTION, HttpHeaders.Values.KEEP_ALIVE);
        }
        HttpHeaders.setContentLength(response, fileLength);
        // write the initial line and the header.
        ctx.write(response);
        // write the content.
        ChannelFuture lastContentFuture;
        if (ctx.pipeline().get(SslHandler.class) == null) {
            ctx.write(new DefaultFileRegion(raf.getChannel(), 0, fileLength), ctx.newProgressivePromise());
            lastContentFuture = ctx.writeAndFlush(LastHttpContent.EMPTY_LAST_CONTENT);
        } else {
            lastContentFuture = ctx.writeAndFlush(new HttpChunkedInput(new ChunkedFile(raf, 0, fileLength, 8192)), ctx.newProgressivePromise());
        // HttpChunkedInput will write the end marker (LastHttpContent) for us.
        }
        // close the connection, if no keep-alive is needed
        if (!HttpHeaders.isKeepAlive(request)) {
            lastContentFuture.addListener(ChannelFutureListener.CLOSE);
        }
    } catch (Exception e) {
        raf.close();
        LOG.error("Failed to serve file.", e);
        throw new RestHandlerException("Internal server error.", INTERNAL_SERVER_ERROR);
    }
}

Example 2 with ErrorResponseBody

use of org.apache.flink.runtime.rest.messages.ErrorResponseBody in project flink by apache.

the class CheckpointingStatisticsHandler method archiveJsonWithPath.

@Override
public Collection<ArchivedJson> archiveJsonWithPath(AccessExecutionGraph graph) throws IOException {
    ResponseBody json;
    try {
        json = createCheckpointingStatistics(graph);
    } catch (RestHandlerException rhe) {
        json = new ErrorResponseBody(rhe.getMessage());
    }
    String path = getMessageHeaders().getTargetRestEndpointURL().replace(':' + JobIDPathParameter.KEY, graph.getJobID().toString());
    return Collections.singletonList(new ArchivedJson(path, json));
}

Example 3 with ErrorResponseBody

use of org.apache.flink.runtime.rest.messages.ErrorResponseBody in project flink by apache.

the class RouterHandler method respondNotFound.

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: " + request.uri()), HttpResponseStatus.NOT_FOUND, responseHeaders);
}

Example 4 with ErrorResponseBody

use of org.apache.flink.runtime.rest.messages.ErrorResponseBody in project flink by apache.

the class FileUploadHandler method handleError.

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 5 with ErrorResponseBody

use of org.apache.flink.runtime.rest.messages.ErrorResponseBody in project flink by apache.

the class AbstractHandler method handleException.

private CompletableFuture<Void> handleException(Throwable throwable, ChannelHandlerContext ctx, HttpRequest httpRequest) {
    ClusterEntryPointExceptionUtils.tryEnrichClusterEntryPointError(throwable);
    FlinkHttpObjectAggregator flinkHttpObjectAggregator = ctx.pipeline().get(FlinkHttpObjectAggregator.class);
    if (flinkHttpObjectAggregator == null) {
        log.warn("The connection was unexpectedly closed by the client.");
        return CompletableFuture.completedFuture(null);
    }
    int maxLength = flinkHttpObjectAggregator.maxContentLength() - OTHER_RESP_PAYLOAD_OVERHEAD;
    if (throwable instanceof RestHandlerException) {
        RestHandlerException rhe = (RestHandlerException) throwable;
        String stackTrace = ExceptionUtils.stringifyException(rhe);
        String truncatedStackTrace = Ascii.truncate(stackTrace, maxLength, "...");
        if (log.isDebugEnabled()) {
            log.error("Exception occurred in REST handler.", rhe);
        } else if (rhe.logException()) {
            log.error("Exception occurred in REST handler: {}", rhe.getMessage());
        }
        return HandlerUtils.sendErrorResponse(ctx, httpRequest, new ErrorResponseBody(truncatedStackTrace), 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));
        String truncatedStackTrace = Ascii.truncate(stackTrace, maxLength, "...");
        return HandlerUtils.sendErrorResponse(ctx, httpRequest, new ErrorResponseBody(Arrays.asList("Internal server error.", truncatedStackTrace)), HttpResponseStatus.INTERNAL_SERVER_ERROR, responseHeaders);
    }
}