Example usage for com.google.common.net HttpHeaders ETAG

List of usage examples for com.google.common.net HttpHeaders ETAG

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Introduction

In this page you can find the example usage for com.google.common.net HttpHeaders ETAG.

Prototype

String ETAG

To view the source code for com.google.common.net HttpHeaders ETAG.

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Document

The HTTP ETag header field name.

Usage

From source file:com.trc.core2.web.Servlets.java

/**
 * Etag Header.
 */
public static void setEtag(HttpServletResponse response, String etag) {
    response.setHeader(HttpHeaders.ETAG, etag);
}

From source file:com.zkai.xxbs.shiro.Servlets.java

/**
 * Etag Header.
 */
public static void setEtag(HttpServletResponse response, String etag) {

    response.setHeader(HttpHeaders.ETAG, etag);
}

From source file:org.sonatype.nexus.repository.view.handlers.ContentHeadersHandler.java

@Nonnull
@Override/*www  .j  a  v a 2s  .  c o m*/
public Response handle(@Nonnull final Context context) throws Exception {
    final Response response = context.proceed();
    Payload payload = response.getPayload();

    if (response.getStatus().isSuccessful() && payload instanceof Content) {
        final Content content = (Content) payload;
        final DateTime lastModified = content.getAttributes().get(Content.CONTENT_LAST_MODIFIED,
                DateTime.class);
        if (lastModified != null) {
            response.getHeaders().set(HttpHeaders.LAST_MODIFIED, DateUtils.formatDate(lastModified.toDate()));
        }
        final String etag = content.getAttributes().get(Content.CONTENT_ETAG, String.class);
        if (etag != null) {
            response.getHeaders().set(HttpHeaders.ETAG, "\"" + etag + "\"");
        }
    }
    return response;
}

From source file:org.ardverk.dropwizard.assets.AssetsDirectoryServlet.java

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    String requestURI = request.getRequestURI();

    try {//from   w  ww  .j  a  v a  2 s.c om
        AssetsDirectory.Entry entry = directory.getFileEntry(requestURI);

        if (isCurrent(request, entry)) {
            response.sendError(HttpServletResponse.SC_NOT_MODIFIED);
            return;
        }

        response.setDateHeader(HttpHeaders.LAST_MODIFIED, entry.getLastModified());
        response.setHeader(HttpHeaders.ETAG, entry.getETag());

        MediaType mediaType = DEFAULT_MEDIA_TYPE;

        Buffer mimeType = mimeTypes.getMimeByExtension(requestURI);
        if (mimeType != null) {
            try {
                mediaType = MediaType.parse(mimeType.toString());
                if (charset != null && mediaType.is(MediaType.ANY_TEXT_TYPE)) {
                    mediaType = mediaType.withCharset(charset);
                }
            } catch (IllegalArgumentException ignore) {
            }
        }

        response.setContentType(mediaType.type() + "/" + mediaType.subtype());

        if (mediaType.charset().isPresent()) {
            response.setCharacterEncoding(mediaType.charset().get().toString());
        }

        long contentLength = entry.length();
        if (contentLength >= 0L && contentLength < Integer.MAX_VALUE) {
            response.setContentLength((int) contentLength);
        }

        OutputStream out = response.getOutputStream();
        entry.writeTo(out);
        out.flush();

    } catch (FileNotFoundException err) {
        response.sendError(HttpServletResponse.SC_NOT_FOUND);
    }
}

From source file:org.sonatype.nexus.repository.maven.internal.MavenHeadersHandler.java

@Nonnull
@Override/*from  w  w w . j a v a  2 s  . c  om*/
public Response handle(final @Nonnull Context context) throws Exception {
    final Response response = context.proceed();
    if (response.getStatus().isSuccessful() && response instanceof PayloadResponse) {
        final Payload payload = ((PayloadResponse) response).getPayload();
        if (payload instanceof Content) {
            final Content content = (Content) payload;
            final DateTime lastModified = content.getAttributes().get(Content.CONTENT_LAST_MODIFIED,
                    DateTime.class);
            if (lastModified != null) {
                response.getHeaders().set(HttpHeaders.LAST_MODIFIED, Iso8601Date.format(lastModified.toDate()));
            }
            if (response.getStatus().getCode() == HttpStatus.OK) {
                final String etag = content.getAttributes().get(Content.CONTENT_ETAG, String.class);
                if (etag != null) {
                    response.getHeaders().set(HttpHeaders.ETAG, "\"" + etag + "\"");
                }
            }
        }
    }
    return response;
}

From source file:com.googlesource.gerrit.plugins.lfs.fs.LfsFsContentServlet.java

@Override
protected void doHead(HttpServletRequest req, HttpServletResponse rsp) throws ServletException, IOException {
    String verifyId = req.getHeader(HttpHeaders.IF_NONE_MATCH);
    if (Strings.isNullOrEmpty(verifyId)) {
        doGet(req, rsp);/*from   w  w  w  .  ja v a2 s  . c  om*/
        return;
    }

    Optional<AnyLongObjectId> obj = validateGetRequest(req, rsp);
    if (obj.isPresent() && obj.get().getName().equalsIgnoreCase(verifyId)) {
        rsp.addHeader(HttpHeaders.ETAG, obj.get().getName());
        rsp.setStatus(HttpStatus.SC_NOT_MODIFIED);
        return;
    }

    getObject(req, rsp, obj);
}

From source file:uk.org.iay.mdq.server.ResultRawView.java

@Override
public void render(final Map<String, ?> model, final HttpServletRequest request,
        final HttpServletResponse response) throws Exception {
    final Result result = (Result) model.get("result");
    log.debug("rendering as {}", getContentType());

    if (result.isNotFound()) {
        response.sendError(HttpServletResponse.SC_NOT_FOUND);
        return;/* ww  w  .j  a v a  2  s.  co  m*/
    }

    // select the representation to provide
    Representation rep = null;
    final String acceptEncoding = request.getHeader(HttpHeaders.ACCEPT_ENCODING);
    if (acceptEncoding != null) {
        if (acceptEncoding.contains("gzip")) {
            rep = result.getGZIPRepresentation();
        } else if (acceptEncoding.contains("compress")) {
            rep = result.getDeflateRepresentation();
        }
    }

    // default to the normal representation
    if (rep == null) {
        rep = result.getRepresentation();
    }

    // Set response headers
    String contentEncoding = rep.getContentEncoding();
    if (contentEncoding != null) {
        response.setHeader(HttpHeaders.CONTENT_ENCODING, contentEncoding);
    } else {
        // for logging only
        contentEncoding = "normal";
    }
    response.setContentType(getContentType());
    response.setContentLength(rep.getBytes().length);
    response.setHeader(HttpHeaders.ETAG, rep.getETag());

    log.debug("selected ({}) representation is {} bytes", contentEncoding, rep.getBytes().length);

    response.getOutputStream().write(rep.getBytes());
}

From source file:com.cnksi.core.web.utils.Servlets.java

/**
 * ?? If-None-Match Header, Etag?./*from ww w .ja va  2 s .  c  o m*/
 * 
 * Etag, checkIfNoneMatchfalse, 304 not modify status.
 * 
 * @param etag ETag.
 */
public static boolean checkIfNoneMatchEtag(HttpServletRequest request, HttpServletResponse response,
        String etag) {

    String headerValue = request.getHeader(HttpHeaders.IF_NONE_MATCH);
    if (headerValue != null) {
        boolean conditionSatisfied = false;
        if (!"*".equals(headerValue)) {
            StringTokenizer commaTokenizer = new StringTokenizer(headerValue, ",");

            while (!conditionSatisfied && commaTokenizer.hasMoreTokens()) {
                String currentToken = commaTokenizer.nextToken();
                if (currentToken.trim().equals(etag)) {
                    conditionSatisfied = true;
                }
            }
        } else {
            conditionSatisfied = true;
        }

        if (conditionSatisfied) {
            response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
            response.setHeader(HttpHeaders.ETAG, etag);
            return false;
        }
    }
    return true;
}

From source file:org.eclipse.hawkbit.rest.util.RestResourceConversionHelper.java

/**
 * <p>//from w w  w .  j  ava 2 s . c om
 * Write response with target relation and publishes events concerning the
 * download progress based on given update action status.
 * </p>
 *
 * <p>
 * The request supports RFC7233 range requests.
 * </p>
 *
 * @param artifact
 *            the artifact
 * @param response
 *            to be sent back to the requesting client
 * @param request
 *            from the client
 * @param file
 *            to be write to the client response
 * @param controllerManagement
 *            to write progress updates to
 * @param statusId
 *            of the {@link ActionStatus}
 *
 * @return http code
 *
 * @see <a href="https://tools.ietf.org/html/rfc7233">https://tools.ietf.org
 *      /html/rfc7233</a>
 */
public static ResponseEntity<InputStream> writeFileResponse(final Artifact artifact,
        final HttpServletResponse response, final HttpServletRequest request, final DbArtifact file,
        final ControllerManagement controllerManagement, final Long statusId) {

    ResponseEntity<InputStream> result;

    final String etag = artifact.getSha1Hash();
    final Long lastModified = artifact.getLastModifiedAt() != null ? artifact.getLastModifiedAt()
            : artifact.getCreatedAt();
    final long length = file.getSize();

    response.reset();
    response.setBufferSize(BUFFER_SIZE);
    response.setHeader(HttpHeaders.CONTENT_DISPOSITION, "attachment;filename=" + artifact.getFilename());
    response.setHeader(HttpHeaders.ETAG, etag);
    response.setHeader(HttpHeaders.ACCEPT_RANGES, "bytes");
    response.setDateHeader(HttpHeaders.LAST_MODIFIED, lastModified);
    response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);

    final ByteRange full = new ByteRange(0, length - 1, length);
    final List<ByteRange> ranges = new ArrayList<>();

    // Validate and process Range and If-Range headers.
    final String range = request.getHeader("Range");
    if (range != null) {
        LOG.debug("range header for filename ({}) is: {}", artifact.getFilename(), range);

        // Range header matches"bytes=n-n,n-n,n-n..."
        if (!range.matches("^bytes=\\d*-\\d*(,\\d*-\\d*)*$")) {
            response.setHeader(HttpHeaders.CONTENT_RANGE, "bytes */" + length);
            LOG.debug("range header for filename ({}) is not satisfiable: ", artifact.getFilename());
            return new ResponseEntity<>(HttpStatus.REQUESTED_RANGE_NOT_SATISFIABLE);
        }

        // RFC: if the representation is unchanged, send me the part(s) that
        // I am requesting in
        // Range; otherwise, send me the entire representation.
        checkForShortcut(request, etag, lastModified, full, ranges);

        // it seems there are valid ranges
        result = extractRange(response, length, ranges, range);
        // return if range extraction turned out to be invalid
        if (result != null) {
            return result;
        }
    }

    // full request - no range
    if (ranges.isEmpty() || ranges.get(0).equals(full)) {
        LOG.debug("filename ({}) results into a full request: ", artifact.getFilename());
        handleFullFileRequest(artifact, response, file, controllerManagement, statusId, full);
        result = new ResponseEntity<>(HttpStatus.OK);
    }
    // standard range request
    else if (ranges.size() == 1) {
        LOG.debug("filename ({}) results into a standard range request: ", artifact.getFilename());
        handleStandardRangeRequest(artifact, response, file, controllerManagement, statusId, ranges);
        result = new ResponseEntity<>(HttpStatus.PARTIAL_CONTENT);
    }
    // multipart range request
    else {
        LOG.debug("filename ({}) results into a multipart range request: ", artifact.getFilename());
        handleMultipartRangeRequest(artifact, response, file, controllerManagement, statusId, ranges);
        result = new ResponseEntity<>(HttpStatus.PARTIAL_CONTENT);
    }

    return result;
}

From source file:com.trc.core2.web.Servlets.java

/**
 * ?? If-None-Match Header, Etag?.//from   ww w  .  ja  v  a 2  s . co m
 * 
 * Etag, checkIfNoneMatchfalse, 304 not modify status.
 * 
 * @param etag ETag.
 */
public static boolean checkIfNoneMatchEtag(HttpServletRequest request, HttpServletResponse response,
        String etag) {
    String headerValue = request.getHeader(HttpHeaders.IF_NONE_MATCH);
    if (headerValue != null) {
        boolean conditionSatisfied = false;
        if (!"*".equals(headerValue)) {
            StringTokenizer commaTokenizer = new StringTokenizer(headerValue, ",");

            while (!conditionSatisfied && commaTokenizer.hasMoreTokens()) {
                String currentToken = commaTokenizer.nextToken();
                if (currentToken.trim().equals(etag)) {
                    conditionSatisfied = true;
                }
            }
        } else {
            conditionSatisfied = true;
        }

        if (conditionSatisfied) {
            response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
            response.setHeader(HttpHeaders.ETAG, etag);
            return false;
        }
    }
    return true;
}