Examples with SegmentFetcher com.linkedin.pinot.common.segment.fetcher.SegmentFetcher used on opensource projects

Example 1 with SegmentFetcher

use of com.linkedin.pinot.common.segment.fetcher.SegmentFetcher in project pinot by linkedin.

the class PinotSegmentUploadRestletResource method post.

@Override
@Post
public Representation post(Representation entity) {
    Representation rep = null;
    File tmpSegmentDir = null;
    File dataFile = null;
    try {
        // 0/ Get upload type, if it's uri, then download it, otherwise, get the tar from the request.
        Series headers = (Series) getRequestAttributes().get(RESTLET_HTTP_HEADERS);
        String uploadTypeStr = headers.getFirstValue(FileUploadUtils.UPLOAD_TYPE);
        FileUploadType uploadType = null;
        try {
            uploadType = (uploadTypeStr == null) ? FileUploadType.getDefaultUploadType() : FileUploadType.valueOf(uploadTypeStr);
        } catch (Exception e) {
            uploadType = FileUploadType.getDefaultUploadType();
        }
        String downloadURI = null;
        boolean found = false;
        switch(uploadType) {
            case URI:
            case JSON:
                // Download segment from the given Uri
                try {
                    downloadURI = getDownloadUri(uploadType, headers, entity);
                } catch (Exception e) {
                    String errorMsg = String.format("Failed to get download Uri for upload file type: %s, with error %s", uploadType, e.getMessage());
                    LOGGER.warn(errorMsg);
                    JSONObject errorMsgInJson = getErrorMsgInJson(errorMsg);
                    ControllerRestApplication.getControllerMetrics().addMeteredGlobalValue(ControllerMeter.CONTROLLER_SEGMENT_UPLOAD_ERROR, 1L);
                    setStatus(Status.CLIENT_ERROR_BAD_REQUEST);
                    return new StringRepresentation(errorMsgInJson.toJSONString(), MediaType.APPLICATION_JSON);
                }
                SegmentFetcher segmentFetcher = null;
                // Get segmentFetcher based on uri parsed from download uri
                try {
                    segmentFetcher = SegmentFetcherFactory.getSegmentFetcherBasedOnURI(downloadURI);
                } catch (Exception e) {
                    String errorMsg = String.format("Failed to get SegmentFetcher from download Uri: %s", downloadURI);
                    LOGGER.warn(errorMsg);
                    JSONObject errorMsgInJson = getErrorMsgInJson(errorMsg);
                    ControllerRestApplication.getControllerMetrics().addMeteredGlobalValue(ControllerMeter.CONTROLLER_SEGMENT_UPLOAD_ERROR, 1L);
                    setStatus(Status.SERVER_ERROR_INTERNAL);
                    return new StringRepresentation(errorMsgInJson.toJSONString(), MediaType.APPLICATION_JSON);
                }
                // Download segment tar to local.
                dataFile = new File(tempDir, "tmp-" + System.nanoTime());
                try {
                    segmentFetcher.fetchSegmentToLocal(downloadURI, dataFile);
                } catch (Exception e) {
                    String errorMsg = String.format("Failed to fetch segment tar from download Uri: %s to %s", downloadURI, dataFile.toString());
                    LOGGER.warn(errorMsg);
                    JSONObject errorMsgInJson = getErrorMsgInJson(errorMsg);
                    ControllerRestApplication.getControllerMetrics().addMeteredGlobalValue(ControllerMeter.CONTROLLER_SEGMENT_UPLOAD_ERROR, 1L);
                    setStatus(Status.SERVER_ERROR_INTERNAL);
                    return new StringRepresentation(errorMsgInJson.toJSONString(), MediaType.APPLICATION_JSON);
                }
                if (dataFile.exists() && dataFile.length() > 0) {
                    found = true;
                }
                break;
            case TAR:
            default:
                // 1/ Create a factory for disk-based file items
                final DiskFileItemFactory factory = new DiskFileItemFactory();
                // 2/ Create a new file upload handler based on the Restlet
                // FileUpload extension that will parse Restlet requests and
                // generates FileItems.
                final RestletFileUpload upload = new RestletFileUpload(factory);
                final List<FileItem> items;
                // 3/ Request is parsed by the handler which generates a
                // list of FileItems
                items = upload.parseRequest(getRequest());
                for (FileItem fileItem : items) {
                    if (!found) {
                        if (fileItem.getFieldName() != null) {
                            found = true;
                            dataFile = new File(tempDir, fileItem.getFieldName());
                            fileItem.write(dataFile);
                        }
                    } else {
                        LOGGER.warn("Got extra file item while pushing segments: " + fileItem.getFieldName());
                    }
                    // TODO: remove the try-catch after verifying it will not throw any exception
                    try {
                        // Remove the temp file
                        // When the file is copied to instead of renamed to the new file, the temp file might be left in the dir
                        fileItem.delete();
                    } catch (Exception e) {
                        LOGGER.error("Caught exception while deleting the temp file, should not reach here", e);
                    }
                }
        }
        // back to the client.
        if (found) {
            // Create a new representation based on disk file.
            // The content is arbitrarily sent as plain text.
            rep = new StringRepresentation(dataFile + " sucessfully uploaded", MediaType.TEXT_PLAIN);
            tmpSegmentDir = new File(tempUntarredPath, dataFile.getName() + "-" + _controllerConf.getControllerHost() + "_" + _controllerConf.getControllerPort() + "-" + System.currentTimeMillis());
            LOGGER.info("Untar segment to temp dir: " + tmpSegmentDir);
            if (tmpSegmentDir.exists()) {
                FileUtils.deleteDirectory(tmpSegmentDir);
            }
            if (!tmpSegmentDir.exists()) {
                tmpSegmentDir.mkdirs();
            }
            // While there is TarGzCompressionUtils.unTarOneFile, we use unTar here to unpack all files
            // in the segment in order to ensure the segment is not corrupted
            TarGzCompressionUtils.unTar(dataFile, tmpSegmentDir);
            File segmentFile = tmpSegmentDir.listFiles()[0];
            String clientIpAddress = getClientInfo().getAddress();
            String clientAddress = InetAddress.getByName(clientIpAddress).getHostName();
            LOGGER.info("Processing upload request for segment '{}' from client '{}'", segmentFile.getName(), clientAddress);
            return uploadSegment(segmentFile, dataFile, downloadURI);
        } else {
            // Some problem occurs, sent back a simple line of text.
            String errorMsg = "No file was uploaded";
            LOGGER.warn(errorMsg);
            JSONObject errorMsgInJson = getErrorMsgInJson(errorMsg);
            rep = new StringRepresentation(errorMsgInJson.toJSONString(), MediaType.APPLICATION_JSON);
            ControllerRestApplication.getControllerMetrics().addMeteredGlobalValue(ControllerMeter.CONTROLLER_SEGMENT_UPLOAD_ERROR, 1L);
            setStatus(Status.SERVER_ERROR_INTERNAL);
        }
    } catch (final Exception e) {
        rep = exceptionToStringRepresentation(e);
        LOGGER.error("Caught exception in file upload", e);
        ControllerRestApplication.getControllerMetrics().addMeteredGlobalValue(ControllerMeter.CONTROLLER_SEGMENT_UPLOAD_ERROR, 1L);
        setStatus(Status.SERVER_ERROR_INTERNAL);
    } finally {
        if ((tmpSegmentDir != null) && tmpSegmentDir.exists()) {
            try {
                FileUtils.deleteDirectory(tmpSegmentDir);
            } catch (final IOException e) {
                LOGGER.error("Caught exception in file upload", e);
                ControllerRestApplication.getControllerMetrics().addMeteredGlobalValue(ControllerMeter.CONTROLLER_SEGMENT_UPLOAD_ERROR, 1L);
                setStatus(Status.SERVER_ERROR_INTERNAL);
            }
        }
        if ((dataFile != null) && dataFile.exists()) {
            FileUtils.deleteQuietly(dataFile);
        }
    }
    return rep;
}