Examples with ExternalFileResource org.hisp.dhis.fileresource.ExternalFileResource used on opensource projects

Example 1 with ExternalFileResource

use of org.hisp.dhis.fileresource.ExternalFileResource in project dhis2-core by dhis2.

the class ExternalFileResourceController method getExternalFileResource.

/**
     * Returns a file associated with the externalFileResource resolved from the accessToken.
     * <p>
     * Only files contained in externalFileResources with a valid accessToken, expiration date null or in the future
     * are files allowed to be served trough this endpoint.
     *
     * @param accessToken a unique string that resolves to a given externalFileResource
     * @param response
     * @throws WebMessageException
     */
@RequestMapping(value = "/{accessToken}", method = RequestMethod.GET)
public void getExternalFileResource(@PathVariable String accessToken, HttpServletResponse response) throws WebMessageException {
    ExternalFileResource externalFileResource = externalFileResourceService.getExternalFileResourceByAccessToken(accessToken);
    if (externalFileResource == null) {
        throw new WebMessageException(WebMessageUtils.notFound("No file found with key '" + accessToken + "'"));
    }
    if (externalFileResource.getExpires() != null && externalFileResource.getExpires().before(new Date())) {
        throw new WebMessageException(WebMessageUtils.createWebMessage("The key you requested has expired", Status.WARNING, HttpStatus.GONE));
    }
    FileResource fileResource = externalFileResource.getFileResource();
    // ---------------------------------------------------------------------
    // Attempt to build signed URL request for content and redirect
    // ---------------------------------------------------------------------
    URI signedGetUri = fileResourceService.getSignedGetFileResourceContentUri(fileResource.getUid());
    if (signedGetUri != null) {
        response.setStatus(HttpServletResponse.SC_TEMPORARY_REDIRECT);
        response.setHeader(HttpHeaders.LOCATION, signedGetUri.toASCIIString());
        return;
    }
    // ---------------------------------------------------------------------
    // Build response and return
    // ---------------------------------------------------------------------
    response.setContentType(fileResource.getContentType());
    response.setContentLength(new Long(fileResource.getContentLength()).intValue());
    response.setHeader(HttpHeaders.CONTENT_DISPOSITION, "filename=" + fileResource.getName());
    // ---------------------------------------------------------------------
    // Request signing is not available, stream content back to client
    // ---------------------------------------------------------------------
    InputStream inputStream = null;
    try {
        inputStream = fileResourceService.getFileResourceContent(fileResource).openStream();
        IOUtils.copy(inputStream, response.getOutputStream());
    } catch (IOException e) {
        throw new WebMessageException(WebMessageUtils.error("Failed fetching the file from storage", "There was an exception when trying to fetch the file from the storage backend. " + "Depending on the provider the root cause could be network or file system related."));
    } finally {
        IOUtils.closeQuietly(inputStream);
    }
}

Example 2 with ExternalFileResource

use of org.hisp.dhis.fileresource.ExternalFileResource in project dhis2-core by dhis2.

the class DefaultPushAnalysisService method uploadImage.

/**
     * Uploads a byte array using FileResource and ExternalFileResource
     *
     * @param name  name of the file to be stored
     * @param bytes the byte array representing the file to be stored
     * @return url pointing to the uploaded resource
     * @throws IOException
     */
private String uploadImage(String name, byte[] bytes) throws IOException {
    FileResource fileResource = new FileResource(name, // All files uploaded from PushAnalysis is PNG.
    MimeTypeUtils.IMAGE_PNG.toString(), bytes.length, ByteSource.wrap(bytes).hash(Hashing.md5()).toString(), FileResourceDomain.PUSH_ANALYSIS);
    fileResourceService.saveFileResource(fileResource, bytes);
    ExternalFileResource externalFileResource = new ExternalFileResource();
    externalFileResource.setFileResource(fileResource);
    externalFileResource.setExpires(null);
    String accessToken = externalFileResourceService.saveExternalFileResource(externalFileResource);
    return systemSettingManager.getInstanceBaseUrl() + "/api/externalFileResources/" + accessToken;
}