public CacheItem getFromDiskCache(final String url, boolean checkExpiration) {
CacheItem result = null;
if (null != mDiskCache) {
checkNotOnMainThread();
try {
final String key = transformUrlForDiskCacheKey(url);
DiskLruCache.Snapshot snapshot = mDiskCache.get(key);
if (null != snapshot) {
Object value = readValueFromDisk(snapshot.getInputStream(0));
DateTime expiresAt = new DateTime(readExpirationFromDisk(snapshot.getInputStream(1)));
if (value != null) {
if (checkExpiration && expiresAt.isBeforeNow()) {
mDiskCache.remove(key);
scheduleDiskCacheFlush();
} else {
result = new CacheItem(value, expiresAt);
if (null != mMemoryCache) {
mMemoryCache.put(url, result);
}
}
} else {
// If we get here, the file in the cache can't be
// decoded. Remove it and schedule a flush.
mDiskCache.remove(key);
scheduleDiskCacheFlush();
}
}
} catch (IOException e) {
Timber.e(e, "getFromDiskCache failed.");
}
}
return result;
}
public void remove(String url) {
if (null != mMemoryCache) {
mMemoryCache.remove(url);
}
if (null != mDiskCache) {
checkNotOnMainThread();
try {
mDiskCache.remove(transformUrlForDiskCacheKey(url));
scheduleDiskCacheFlush();
} catch (IOException e) {
e.printStackTrace();
}
}
}