internal DiskCacheConfig(Builder builder)
{
_version = builder._version;
_baseDirectoryName = Preconditions.CheckNotNull(builder._baseDirectoryName);
_baseDirectoryPathSupplier = Preconditions.CheckNotNull(builder._baseDirectoryPathSupplier);
_defaultSizeLimit = builder._maxCacheSize;
_lowDiskSpaceSizeLimit = builder._maxCacheSizeOnLowDiskSpace;
_minimumSizeLimit = builder._maxCacheSizeOnVeryLowDiskSpace;
_entryEvictionComparatorSupplier = Preconditions.CheckNotNull(builder._entryEvictionComparatorSupplier);
_cacheErrorLogger = builder._cacheErrorLogger ?? NoOpCacheErrorLogger.Instance;
_cacheEventListener = builder._cacheEventListener ?? NoOpCacheEventListener.Instance;
_diskTrimmableRegistry = builder._diskTrimmableRegistry ?? NoOpDiskTrimmableRegistry.Instance;
_indexPopulateAtStartupEnabled = builder._indexPopulateAtStartupEnabled;
}
/// <summary>
/// Provides the logic to determine the eviction order based on entry's
/// access time and size.
/// </summary>
public Builder SetEntryEvictionComparatorSupplier(IEntryEvictionComparatorSupplier supplier)
{
_entryEvictionComparatorSupplier = supplier;
return(this);
}
/// <summary>
/// Instantiates the <see cref="DiskStorageCache"/>.
/// </summary>
public DiskStorageCache(
IDiskStorage diskStorage,
IEntryEvictionComparatorSupplier entryEvictionComparatorSupplier,
Params parameters,
ICacheEventListener cacheEventListener,
ICacheErrorLogger cacheErrorLogger,
IDiskTrimmableRegistry diskTrimmableRegistry,
bool indexPopulateAtStartupEnabled,
Clock clock = null)
{
_lowDiskSpaceCacheSizeLimit = parameters.LowDiskSpaceCacheSizeLimit;
_defaultCacheSizeLimit = parameters.DefaultCacheSizeLimit;
_cacheSizeLimit = parameters.DefaultCacheSizeLimit;
_statFsHelper = StatFsHelper.Instance;
_storage = diskStorage;
_entryEvictionComparatorSupplier = entryEvictionComparatorSupplier;
_cacheSizeLastUpdateTime = default(DateTime);
_cacheEventListener = cacheEventListener;
_cacheSizeLimitMinimum = parameters.CacheSizeLimitMinimum;
_cacheErrorLogger = cacheErrorLogger;
_cacheStats = new CacheStats();
if (diskTrimmableRegistry != null)
{
diskTrimmableRegistry.RegisterDiskTrimmable(this);
}
_clock = clock ?? SystemClock.Get();
_indexPopulateAtStartupEnabled = indexPopulateAtStartupEnabled;
_resourceIndex = new HashSet <string>();
if (_indexPopulateAtStartupEnabled)
{
Task.Run(() =>
{
try
{
lock (_lock)
{
MaybeUpdateFileCacheSize();
}
}
finally
{
_countdownEvent.Signal();
}
});
}
else
{
_countdownEvent.Reset(0);
}
}
