| public static SortedBlockTableFile ( string baseName, int level, int version ) : string | ||
| baseName | string | |
| level | int | |
| version | int | |
| 리턴 | string | |
public void NotifyPageReleased(PageRecord pageRec)
{
string path = null;
path = Config.SortedBlockTableFile(BaseFileName, pageRec.Level, pageRec.Version);
Helper.DeleteFile(path);
}
public byte[] GetBlock(string baseName, int level, int version, int blockNum)
{
string blockKey = Config.SortedBlockTableFile(baseName, level, version) + ":" + blockNum.ToString();
byte[] block = null;
_blockDataCache.TryGetValue(blockKey, out block);
return(block);
}
public SortedBlockTable(RazorCache cache, string baseFileName, int level, int version)
{
PerformanceCounters.SBTConstructed.Increment();
_baseFileName = baseFileName;
_level = level;
_version = version;
_cache = cache;
_path = Config.SortedBlockTableFile(baseFileName, level, version);
ReadMetadata();
}
public SortedBlockTableWriter(string baseFileName, int level, int version)
{
string fileName = Config.SortedBlockTableFile(baseFileName, level, version);
_fileStream = new FileStream(fileName, FileMode.Create, FileAccess.Write, FileShare.None, Config.SortedBlockSize, Config.SortedBlockTableFileOptions);
_bufferA = new byte[Config.SortedBlockSize];
_bufferB = new byte[Config.SortedBlockSize];
_buffer = _bufferA;
_bufferPos = 0;
_pageIndex = new List <Key>();
Version = version;
WrittenSize = 0;
}
// List all the pages in the directory and delete those that are not in the manifest.
public void RemoveOrphanedPages()
{
using (var manifestInst = this.Manifest.GetLatestManifest()) {
// find all the sbt files in the data directory
var files = Directory.GetFiles(this.Manifest.BaseFileName, "*.sbt").ToDictionary(f => Path.GetFileNameWithoutExtension(f.ToLower()));
for (int level = 0; level < manifestInst.NumLevels - 1; level++)
{
foreach (var page in manifestInst.GetPagesAtLevel(level))
{
// Yes this is kind of backwards to add the file path and then strip it off, but I want to make sure we are using the exact same logic
// as that which creates the file names.
string fileForPage = Path.GetFileNameWithoutExtension(Config.SortedBlockTableFile(this.Manifest.BaseFileName, page.Level, page.Version));
// Remove the page from the file list because it's in the manifest and we've accounted for it.
files.Remove(fileForPage);
}
}
// Loop over the leftover files and handle them
foreach (var file in files.Keys)
{
try {
var parts = file.Split('-');
int level = int.Parse(parts[0]);
int version = int.Parse(parts[1]);
// First let's check the version number, we don't want to remove any new files that are being created while this is happening
if (level < manifestInst.NumLevels && version < manifestInst.CurrentVersion(level))
{
string orphanedFile = Config.SortedBlockTableFile(Manifest.BaseFileName, level, version);
// Delete the file.
Helper.DeleteFile(orphanedFile, true, (msg) => { Manifest.LogMessage(msg); });
Manifest.LogMessage("Removing Orphaned Pages '{0}'", orphanedFile);
}
} catch {
// Best effort, here. If we fail, continue.
}
}
}
// Now process the indexes as well
Manifest.LogMessage("Removing Orphaned Index Pages");
lock (_secondaryIndexes) {
foreach (var idx in _secondaryIndexes)
{
idx.Value.RemoveOrphanedPages();
}
}
}
public void SetBlock(string baseName, int level, int version, int blockNum, byte[] block)
{
try {
string blockKey = Config.SortedBlockTableFile(baseName, level, version) + ":" + blockNum.ToString();
_blockDataCache.Set(blockKey, block);
} catch (Exception ex) {
if (Config.ExceptionHandling == ExceptionHandling.ThrowAll)
{
throw;
}
if (Config.Logger != null)
{
Config.Logger(string.Format("RazorCache.SetBlock Failed: {0}\nException: {1}", baseName, ex.Message));
}
}
}
public Key[] GetBlockTableIndex(string baseName, int level, int version)
{
string fileName = Config.SortedBlockTableFile(baseName, level, version);
Key[] index;
if (_blockIndexCache.TryGetValue(fileName, out index))
{
return(index);
}
PerformanceCounters.SBTGetBlockTableIndex.Increment();
var sbt = new SortedBlockTable(null, baseName, level, version);
try {
index = sbt.GetIndex();
_blockIndexCache.Set(fileName, index);
return(index);
} finally {
sbt.Close();
}
}