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

Introduction

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

Prototype

String IF_NONE_MATCH

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

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Document

The HTTP If-None-Match header field name.

Usage

From source file:com.khannedy.sajikeun.servlet.AssetServlet.java

private boolean isCachedClientSide(HttpServletRequest req, Asset asset) {
    return asset.getETag().equals(req.getHeader(HttpHeaders.IF_NONE_MATCH))
            || (req.getDateHeader(HttpHeaders.IF_MODIFIED_SINCE) >= asset.getLastModified());
}

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From source file:org.sonatype.nexus.repository.http.HttpConditions.java

@Nullable
private static Predicate<Response> ifNoneMatch(final Request request) {
    final String match = request.getHeaders().get(HttpHeaders.IF_NONE_MATCH);
    if (match != null && !"*".equals(match)) {
        return new Predicate<Response>() {
            @Override/* w  w  w. j  a  v  a 2 s  . c  om*/
            public boolean apply(final Response response) {
                final String etag = response.getHeaders().get(HttpHeaders.ETAG);
                if (etag != null) {
                    return !match.contains(etag);
                }
                return true;
            }

            @Override
            public String toString() {
                return HttpConditions.class.getSimpleName() + ".ifNoneMatch(" + match + ")";
            }
        };
    }
    return null;
}

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From source file:net.staticsnow.nexus.repository.apt.internal.proxy.AptProxyFacet.java

private HttpGet buildFetchRequest(Content oldVersion, URI fetchUri) {
    HttpGet getRequest = new HttpGet(fetchUri);
    if (oldVersion != null) {
        DateTime lastModified = oldVersion.getAttributes().get(Content.CONTENT_LAST_MODIFIED, DateTime.class);
        if (lastModified != null) {
            getRequest.addHeader(HttpHeaders.IF_MODIFIED_SINCE, DateUtils.formatDate(lastModified.toDate()));
        }//w w w . ja  v a2 s  . c  om
        final String etag = oldVersion.getAttributes().get(Content.CONTENT_ETAG, String.class);
        if (etag != null) {
            getRequest.addHeader(HttpHeaders.IF_NONE_MATCH, "\"" + etag + "\"");
        }
    }
    return getRequest;
}

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From source file:org.sonatype.nexus.repository.proxy.ProxyFacetSupport.java

protected Content fetch(String url, Context context, @Nullable Content stale) throws IOException {
    HttpClient client = httpClient.getHttpClient();

    URI uri = config.remoteUrl.resolve(url);
    HttpRequestBase request = buildFetchHttpRequest(uri, context);
    if (stale != null) {
        final DateTime lastModified = stale.getAttributes().get(Content.CONTENT_LAST_MODIFIED, DateTime.class);
        if (lastModified != null) {
            request.addHeader(HttpHeaders.IF_MODIFIED_SINCE, DateUtils.formatDate(lastModified.toDate()));
        }/*from   w w  w . j a  v  a2  s  .c o m*/
        final String etag = stale.getAttributes().get(Content.CONTENT_ETAG, String.class);
        if (etag != null) {
            request.addHeader(HttpHeaders.IF_NONE_MATCH, "\"" + etag + "\"");
        }
    }
    log.debug("Fetching: {}", request);

    HttpResponse response = execute(context, client, request);
    log.debug("Response: {}", response);

    StatusLine status = response.getStatusLine();
    log.debug("Status: {}", status);

    final CacheInfo cacheInfo = getCacheController(context).current();

    if (status.getStatusCode() == HttpStatus.SC_OK) {
        HttpEntity entity = response.getEntity();
        log.debug("Entity: {}", entity);

        final Content result = createContent(context, response);
        result.getAttributes().set(Content.CONTENT_LAST_MODIFIED, extractLastModified(request, response));
        result.getAttributes().set(Content.CONTENT_ETAG, extractETag(response));
        result.getAttributes().set(CacheInfo.class, cacheInfo);
        return result;
    }

    try {
        if (status.getStatusCode() == HttpStatus.SC_NOT_MODIFIED) {
            checkState(stale != null, "Received 304 without conditional GET (bad server?) from %s", uri);
            indicateVerified(context, stale, cacheInfo);
        }
        mayThrowProxyServiceException(response);
    } finally {
        HttpClientUtils.closeQuietly(response);
    }

    return null;
}

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From source file:com.github.dirkraft.dropwizard.fileassets.FileAssetServlet.java

private boolean isCachedClientSide(HttpServletRequest req, CachedAsset cachedAsset) {
    return cachedAsset.getETag().equals(req.getHeader(HttpHeaders.IF_NONE_MATCH))
            || (req.getDateHeader(HttpHeaders.IF_MODIFIED_SINCE) >= cachedAsset.getLastModifiedTime());
}

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From source file:com.googlesource.gerrit.plugins.xdocs.XDocServlet.java

private static boolean isResourceNotModified(HttpServletRequest req, ResourceKey key, ObjectId revId,
        ObjectId revIdB) {/*w  w  w .  j  av a2s. c  o  m*/
    String receivedETag = req.getHeader(HttpHeaders.IF_NONE_MATCH);
    if (receivedETag != null) {
        return receivedETag.equals(computeETag(key.project, revId, key.file, revIdB, key.diffMode));
    }
    return false;
}

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