Example usage for org.apache.http.client.cache HttpCacheContext getCacheResponseStatus

Introduction

In this page you can find the example usage for org.apache.http.client.cache HttpCacheContext getCacheResponseStatus.

Prototype

public CacheResponseStatus getCacheResponseStatus() 

Source Link

Usage

From source file:it.tidalwave.bluemarine2.downloader.impl.DefaultDownloader.java

/*******************************************************************************************************************
 *
 *
 *
 ******************************************************************************************************************/
/* VisibleForTesting */ void onDownloadRequest(final @ListensTo @Nonnull DownloadRequest request)
        throws URISyntaxException {
    try {/*from  ww  w  .java  2 s.c  o  m*/
        log.info("onDownloadRequest({})", request);

        URL url = request.getUrl();

        for (;;) {
            final HttpCacheContext context = HttpCacheContext.create();
            @Cleanup
            final CloseableHttpResponse response = httpClient.execute(new HttpGet(url.toURI()), context);
            final byte[] bytes = bytesFrom(response);
            final CacheResponseStatus cacheResponseStatus = context.getCacheResponseStatus();
            log.debug(">>>> cacheResponseStatus: {}", cacheResponseStatus);

            final Origin origin = cacheResponseStatus.equals(CacheResponseStatus.CACHE_HIT) ? Origin.CACHE
                    : Origin.NETWORK;

            // FIXME: shouldn't do this by myself
            // FIXME: upon configuration, everything should be cached (needed for supporting integration tests)
            if (!origin.equals(Origin.CACHE)
                    && Arrays.asList(200, 303).contains(response.getStatusLine().getStatusCode())) {
                final Date date = new Date();
                final Resource resource = new HeapResource(bytes);
                cacheStorage.putEntry(url.toExternalForm(), new HttpCacheEntry(date, date,
                        response.getStatusLine(), response.getAllHeaders(), resource));
            }

            // FIXME: if the redirect were enabled, we could drop this check
            if (request.isOptionPresent(DownloadRequest.Option.FOLLOW_REDIRECT)
                    && response.getStatusLine().getStatusCode() == 303) // SEE_OTHER FIXME
            {
                url = new URL(response.getFirstHeader("Location").getValue());
                log.info(">>>> following 'see also' to {} ...", url);
            } else {
                messageBus.publish(new DownloadComplete(request.getUrl(),
                        response.getStatusLine().getStatusCode(), bytes, origin));
                return;
            }
        }
    } catch (IOException e) {
        log.error("{}: {}", request.getUrl(), e.toString());
        messageBus.publish(new DownloadComplete(request.getUrl(), -1, new byte[0], Origin.NETWORK));
    }
}

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