/// <summary>
/// Removes all images with the specified <see cref="Uri"/>
/// from disk cache.
/// </summary>
/// <param name="imageRequest">
/// The imageRequest for the image to evict from disk cache.
/// </param>
public async Task EvictFromDiskCacheAsync(ImageRequest imageRequest)
{
ICacheKey cacheKey = _cacheKeyFactory.GetEncodedCacheKey(imageRequest, null);
await _mainBufferedDiskCache.Remove(cacheKey).ConfigureAwait(false);
await _smallImageBufferedDiskCache.Remove(cacheKey).ConfigureAwait(false);
}
/// <summary>
/// Gets the cache key.
/// </summary>
protected override Tuple <ICacheKey, int> GetKey(IProducerContext producerContext)
{
return(new Tuple <ICacheKey, int>(
_cacheKeyFactory.GetEncodedCacheKey(
producerContext.ImageRequest,
producerContext.CallerContext),
producerContext.LowestPermittedRequestLevel));
}
/// <summary>
/// Gets the file cache path.
/// </summary>
/// <param name="uri">The image uri.</param>
public Task <FileInfo> GetFileCachePath(Uri uri)
{
ICacheKey cacheKey = _cacheKeyFactory.GetEncodedCacheKey(
ImageRequest.FromUri(uri), null);
Task writeTask = _mainBufferedDiskCache.GetWriteToDiskCacheTask(cacheKey);
if (writeTask != default(Task))
{
return(writeTask.ContinueWith(
task =>
{
IBinaryResource resource = ImagePipelineFactory.Instance.GetMainDiskStorageCache().GetResource(cacheKey);
return ((FileBinaryResource)resource).File;
},
TaskContinuationOptions.ExecuteSynchronously));
}
else
{
return(_mainBufferedDiskCache.Contains(cacheKey).ContinueWith(
task =>
{
bool fileExists = task.Result;
if (fileExists)
{
IBinaryResource resource = ImagePipelineFactory.Instance.GetMainDiskStorageCache().GetResource(cacheKey);
return ((FileBinaryResource)resource).File;
}
else
{
return default(FileInfo);
}
},
TaskContinuationOptions.ExecuteSynchronously));
}
}