/// <summary>
/// Creates the new map.
/// </summary>
/// <param name="fileName">Name of the file.</param>
/// <param name="location">The location.</param>
/// <param name="maxBlockSize">Size of the max block.</param>
/// <param name="maxBlocksPerFile">The max blocks per file.</param>
/// <returns>MappedFile.</returns>
public static MappedFile CreateNewMap(string fileName, string location, int maxBlockSize, int maxBlocksPerFile)
{
lock (MapLock)
{
var map = new MappedFile
{
FileName = fileName,
Location = location,
MaxBlockSize = maxBlockSize,
MapFile =
MemoryMappedFile.CreateFromFile(Path.Combine(location, fileName),
FileMode.CreateNew,
fileName, maxBlockSize * maxBlocksPerFile)
};
for (var i = 0; i < maxBlocksPerFile; i++)
{
map.FreeBlocks.Add(i);
}
map.BlocksFree = maxBlocksPerFile;
var configPath = Path.Combine(location, fileName + ".config");
File.WriteAllText(configPath, map.ToString());
return(map);
}
}
/// <summary>
/// Creates the new map file.
/// </summary>
private void CreateNewMapFile()
{
lock (_mapLock)
{
var count = (MappedFiles.Count() + 1);
var hash = (Name + "-" + count).GetHashCode();
MappedFiles.Add(hash,
MappedFile.CreateNewMap(hash + ".bin", Location, MaxDocumentSize,
MaxDocumentCountPerFile));
}
}
/// <summary>
/// Loads the data bucket.
/// </summary>
/// <param name="name">The name.</param>
/// <param name="location">The location.</param>
/// <returns>DataBucket.</returns>
public static DataBucket LoadDataBucket(string name, string location)
{
var bucket =
JsonConvert.DeserializeObject <DataBucket>(File.ReadAllText(Path.Combine(location, name + ".bucket")));
var files = Directory.GetFiles(bucket.Location);
var fileInfo = files.Select(fi => new FileInfo(fi)).Where(fi => fi.Extension.Equals(".bin", StringComparison.OrdinalIgnoreCase));
bucket.MappedFiles =
fileInfo.Select(fi => new KeyValuePair <long, MappedFile>(long.Parse(fi.Name.Replace(".bin", string.Empty)), MappedFile.LoadMap(fi.Name, bucket.Location)))
.ToDictionary(k => k.Key, v => v.Value);
bucket.KeyTree = KeyTree.Load(Path.Combine(bucket.Location, bucket.Name + "-KeyTree.key"));
return(bucket);
}
/// <summary>
/// Creates the new map.
/// </summary>
/// <param name="fileName">Name of the file.</param>
/// <param name="location">The location.</param>
/// <param name="maxBlockSize">Size of the max block.</param>
/// <param name="maxBlocksPerFile">The max blocks per file.</param>
/// <returns>MappedFile.</returns>
public static MappedFile CreateNewMap(string fileName, string location, int maxBlockSize, int maxBlocksPerFile)
{
lock (MapLock)
{
var map = new MappedFile
{
FileName = fileName,
Location = location,
MaxBlockSize = maxBlockSize,
MapFile =
MemoryMappedFile.CreateFromFile(Path.Combine(location, fileName),
FileMode.CreateNew,
fileName, maxBlockSize*maxBlocksPerFile)
};
for (var i = 0; i < maxBlocksPerFile; i++)
{
map.FreeBlocks.Add(i);
}
map.BlocksFree = maxBlocksPerFile;
var configPath = Path.Combine(location, fileName + ".config");
File.WriteAllText(configPath, map.ToString());
return map;
}
}
