/**
* Returns an input stream that reads the body of a snapshot, closing the snapshot when the stream
* is closed.
*/
private static InputStream newBodyInputStream(final DiskLruCache.Snapshot snapshot) {
return new FilterInputStream(snapshot.getInputStream(ENTRY_BODY)) {
@Override
public void close() throws IOException {
snapshot.close();
super.close();
}
};
}
// step 1) see if we can serve request from the cache directly.
// also see if this can be turned into a conditional cache request.
@Override
public Cancellable getSocket(final GetSocketData data) {
if (cache == null) return null;
if (!caching) return null;
if (data.request.getHeaders().isNoCache()) return null;
// Log.i(LOGTAG, "getting cache socket: " + request.getUri().toString());
String key = uriToKey(data.request.getUri());
DiskLruCache.Snapshot snapshot;
Entry entry;
try {
snapshot = cache.get(key);
if (snapshot == null) {
// Log.i(LOGTAG, "snapshot fail");
return null;
}
entry = new Entry(snapshot.getInputStream(ENTRY_METADATA));
} catch (IOException e) {
// Give up because the cache cannot be read.
return null;
}
if (!entry.matches(
data.request.getUri(),
data.request.getMethod(),
data.request.getHeaders().getHeaders().toMultimap())) {
snapshot.close();
return null;
}
ResponseSource responseSource = ResponseSource.NETWORK;
CacheResponse candidate =
entry.isHttps()
? new EntrySecureCacheResponse(entry, snapshot)
: new EntryCacheResponse(entry, snapshot);
Map<String, List<String>> responseHeadersMap;
InputStream cachedResponseBody;
try {
responseHeadersMap = candidate.getHeaders();
cachedResponseBody = candidate.getBody();
} catch (Exception e) {
return null;
}
if (responseHeadersMap == null || cachedResponseBody == null) {
try {
cachedResponseBody.close();
} catch (Exception e) {
}
return null;
}
RawHeaders rawResponseHeaders = RawHeaders.fromMultimap(responseHeadersMap);
ResponseHeaders cachedResponseHeaders =
new ResponseHeaders(data.request.getUri(), rawResponseHeaders);
long now = System.currentTimeMillis();
responseSource = cachedResponseHeaders.chooseResponseSource(now, data.request.getHeaders());
if (responseSource == ResponseSource.CACHE) {
cacheStoreCount++;
final CachedSocket socket =
entry.isHttps()
? new CachedSSLSocket((EntrySecureCacheResponse) candidate)
: new CachedSocket((EntryCacheResponse) candidate);
client
.getServer()
.post(
new Runnable() {
@Override
public void run() {
data.connectCallback.onConnectCompleted(null, socket);
socket.spewInternal();
}
});
} else if (responseSource == ResponseSource.CONDITIONAL_CACHE) {
CacheData cacheData = new CacheData();
cacheData.cachedResponseHeaders = cachedResponseHeaders;
cacheData.candidate = candidate;
data.state.putParcelable("cache-data", cacheData);
return null;
} else {
// NETWORK or other
try {
cachedResponseBody.close();
} catch (Exception e) {
}
return null;
}
return new SimpleCancelable();
}