Examples of org.apache.http.client.cache.HttpCacheEntry

org.apache.http.client.cache.HttpCacheEntry
Structure used to store an {@link HttpResponse} in a cache. Some entriescan optionally depend on system resources that may require explicit deallocation. In such a case {@link #getResource()} should return a nonnull instance of {@link Resource} that must be deallocated by calling{@link Resource#dispose()} method when no longer used. @since 4.1

        if (matchingVariant == null) {
            log.debug("304 response did not contain ETag matching one sent in If-None-Match");
            return callBackend(target, request, context);
        }


        final HttpCacheEntry matchedEntry = matchingVariant.getEntry();


        if (revalidationResponseIsTooOld(backendResponse, matchedEntry)) {
            IOUtils.consume(backendResponse.getEntity());
            return retryRequestUnconditionally(target, request, context,
                    matchedEntry);
        }


        recordCacheUpdate(context);


        final HttpCacheEntry responseEntry = getUpdatedVariantEntry(target,
                conditionalRequest, requestDate, responseDate, backendResponse,
                matchingVariant, matchedEntry);


        final HttpResponse resp = responseGenerator.generateResponse(responseEntry);
        tryToUpdateVariantMap(target, request, matchingVariant);

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    private HttpCacheEntry getUpdatedVariantEntry(final HttpHost target,
            final HttpRequestWrapper conditionalRequest, final Date requestDate,
            final Date responseDate, final HttpResponse backendResponse,
            final Variant matchingVariant, final HttpCacheEntry matchedEntry) {
        HttpCacheEntry responseEntry = matchedEntry;
        try {
            responseEntry = responseCache.updateVariantCacheEntry(target, conditionalRequest,
                    matchedEntry, backendResponse, requestDate, responseDate, matchingVariant.getCacheKey());
        } catch (final IOException ioe) {
            log.warn("Could not update cache entry", ioe);

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        if (statusCode == HttpStatus.SC_NOT_MODIFIED || statusCode == HttpStatus.SC_OK) {
            recordCacheUpdate(context);
        }


        if (statusCode == HttpStatus.SC_NOT_MODIFIED) {
            final HttpCacheEntry updatedEntry = responseCache.updateCacheEntry(target, request, cacheEntry,
                    backendResponse, requestDate, responseDate);
            if (suitabilityChecker.isConditional(request)
                    && suitabilityChecker.allConditionalsMatch(request, updatedEntry, new Date())) {
                return responseGenerator.generateNotModifiedResponse(updatedEntry);
            }

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        }
    }


    private boolean alreadyHaveNewerCacheEntry(final HttpHost target, final HttpRequest request,
            final HttpResponse backendResponse) {
        HttpCacheEntry existing = null;
        try {
            existing = responseCache.getCacheEntry(target, request);
        } catch (final IOException ioe) {
            // nop
        }
        if (existing == null) {
            return false;
        }
        final Header entryDateHeader = existing.getFirstHeader(HTTP.DATE_HEADER);
        if (entryDateHeader == null) {
            return false;
        }
        final Header responseDateHeader = backendResponse.getFirstHeader(HTTP.DATE_HEADER);
        if (responseDateHeader == null) {

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    }


    @Test
    public void testCachePut() throws IOException {
        final String key = "foo";
        final HttpCacheEntry value = HttpTestUtils.makeCacheEntry();


        final Element e = new Element(key, new byte[]{});


        mockSerializer.writeTo(EasyMock.same(value), EasyMock.isA(OutputStream.class));
        mockCache.put(e);

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        final String key = "foo";


        EasyMock.expect(mockCache.get(key)).andReturn(null);


        replayMocks();
        final HttpCacheEntry resultingEntry = impl.getEntry(key);
        verifyMocks();


        assertNull(resultingEntry);
    }

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    }


    @Test
    public void testCacheGet() throws IOException {
        final String key = "foo";
        final HttpCacheEntry cachedValue = HttpTestUtils.makeCacheEntry();


        final Element element = new Element(key, new byte[]{});


        EasyMock.expect(mockCache.get(key))
                .andReturn(element);
        EasyMock.expect(mockSerializer.readFrom(EasyMock.isA(InputStream.class)))
                .andReturn(cachedValue);


        replayMocks();
        final HttpCacheEntry resultingEntry = impl.getEntry(key);
        verifyMocks();


        assertSame(cachedValue, resultingEntry);
    }

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    }


    @Test
    public void testCacheUpdateNullEntry() throws IOException, HttpCacheUpdateException {
        final String key = "foo";
        final HttpCacheEntry updatedValue = HttpTestUtils.makeCacheEntry();


        final Element element = new Element(key, new byte[]{});


        final HttpCacheUpdateCallback callback = new HttpCacheUpdateCallback(){
            public HttpCacheEntry update(final HttpCacheEntry old){

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    }


    @Test
    public void testCacheUpdate() throws IOException, HttpCacheUpdateException {
        final String key = "foo";
        final HttpCacheEntry existingValue = HttpTestUtils.makeCacheEntry();
        final HttpCacheEntry updatedValue = HttpTestUtils.makeCacheEntry();


        final Element existingElement = new Element(key, new byte[]{});


        final HttpCacheUpdateCallback callback = new HttpCacheUpdateCallback(){
            public HttpCacheEntry update(final HttpCacheEntry old){

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    }


    @Test
    public void testSingleCacheUpdateRetry() throws IOException, HttpCacheUpdateException {
        final String key = "foo";
        final HttpCacheEntry existingValue = HttpTestUtils.makeCacheEntry();
        final HttpCacheEntry updatedValue = HttpTestUtils.makeCacheEntry();


        final Element existingElement = new Element(key, new byte[]{});


        final HttpCacheUpdateCallback callback = new HttpCacheUpdateCallback(){
            public HttpCacheEntry update(final HttpCacheEntry old){

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