public ClientResponse cacheIfPossible(ClientRequest request, BaseClientResponse response)
throws Exception {
String cc = (String) response.getResponseHeaders().getFirst(HttpHeaders.CACHE_CONTROL);
String exp = (String) response.getResponseHeaders().getFirst(HttpHeaders.EXPIRES);
int expires = -1;
if (cc != null) {
CacheControl cacheControl = CacheControl.valueOf(cc);
if (cacheControl.isNoCache()) return response;
expires = cacheControl.getMaxAge();
} else if (exp != null) {
Date date = DateUtil.parseDate(exp);
expires = (int) ((date.getTime() - System.currentTimeMillis()) / 1000);
}
String lastModified =
(String) response.getResponseHeaders().getFirst(HttpHeaders.LAST_MODIFIED);
String etag = (String) response.getResponseHeaders().getFirst(HttpHeaders.ETAG);
String contentType = (String) response.getResponseHeaders().getFirst(HttpHeaders.CONTENT_TYPE);
byte[] cached =
ReadFromStream.readFromStream(1024, response.getStreamFactory().getInputStream());
response.getStreamFactory().performReleaseConnection();
MediaType mediaType = MediaType.valueOf(contentType);
final BrowserCache.Entry entry =
cache.put(
request.getUri(),
mediaType,
response.getResponseHeaders(),
cached,
expires,
etag,
lastModified);
response.setStreamFactory(new CachedStreamFactory(entry));
return response;
}
@SuppressWarnings("rawtypes")
public void handle(ClientResponse response) throws RuntimeException {
try {
BaseClientResponse r = (BaseClientResponse) response;
String message = "SomeApplikationException. Status Code: " + response.getStatus();
InputStream stream = r.getStreamFactory().getInputStream();
stream.reset();
if (response.getStatus() == 523) {
System.out.println(
"ClientExceptionmapper: Mapped Stauscode 523 to SomeApplicationException");
throw new SomeApplicationException(message);
}
} catch (IOException e) {
e.printStackTrace();
}
}