private static bool TryGetDiskCacheResult(string source, string name, InMemoryRavenConfiguration configuration, out string indexFilePath,
out Type type)
{
// It's not in the in-memory cache. See if it's been cached on disk.
//
// Q. Why do we cache on disk?
// A. It decreases the duration of individual test runs. Instead of
// recompiling the index each test run, we can just load them from disk.
// It also decreases creation time for indexes that were
// previously created and deleted, affecting both production and test environments.
//
// For more info, see http://ayende.com/blog/161218/robs-sprint-idly-indexing?key=f37cf4dc-0e5c-43be-9b27-632f61ba044f#comments-form-location
var indexCacheDir = GetIndexCacheDir(configuration);
string sourceHashed;
using (var md5 = MD5.Create())
{
var hash = md5.ComputeHash(Encoding.UTF8.GetBytes(source));
sourceHashed = MonoHttpUtility.UrlEncode(Convert.ToBase64String(hash));
}
indexFilePath = Path.Combine(indexCacheDir,
IndexingUtil.StableInvariantIgnoreCaseStringHash(source) + "." + sourceHashed + "." +
(Debugger.IsAttached ? "debug" : "nodebug") + ".dll");
try
{
if (Directory.Exists(indexCacheDir) == false)
{
Directory.CreateDirectory(indexCacheDir);
}
type = TryGetIndexFromDisk(indexFilePath, name);
}
catch (UnauthorizedAccessException)
{
// permission issues
type = null;
return(false);
}
catch (IOException)
{
// permission issues, probably
type = null;
return(false);
}
if (type != null)
{
cacheEntries.TryAdd(source, new CacheEntry
{
Source = source,
Type = type,
Usages = 1
});
{
return(true);
}
}
return(false);
}
private static string GetIndexFilePath(string source, string indexCacheDir)
{
var hash = Encryptor.Current.Hash.Compute16(Encoding.UTF8.GetBytes(source));
var sourceHashed = MonoHttpUtility.UrlEncode(Convert.ToBase64String(hash));
var indexFilePath = Path.Combine(indexCacheDir,
IndexingUtil.StableInvariantIgnoreCaseStringHash(source) + "." + sourceHashed + "." +
(Debugger.IsAttached ? "debug" : "nodebug") + ".dll");
return(indexFilePath);
}
private static string GetIndexFilePath(string source, string indexCacheDir, out int numberHash)
{
var hash = Hashing.XXHash64.CalculateRaw(source);
var sourceHashed = hash.ToString("X");
numberHash = IndexingUtil.StableInvariantIgnoreCaseStringHash(source);
var indexFilePath = Path.Combine(indexCacheDir,
numberHash + "." + sourceHashed + "." +
(Debugger.IsAttached ? "debug" : "nodebug") + ".dll");
return(indexFilePath);
}