/// <summary>
/// Initializes a new instance of the <see cref="LightningStorageEngine"/> class.
/// </summary>
/// <param name="dataPath">The database path.</param>
public LightningStorageEngine(string dataPath)
{
DataPath = dataPath;
if (!Directory.Exists(DataPath))
Directory.CreateDirectory(DataPath);
_log.Info($"Data Path: {DataPath}");
_log.Info($"Compression Option: {LightningStorageUtils._compressionOption}");
var config = new EnvironmentConfiguration
{
MaxDatabases = MAX_DATABASES,
MapSize = MAX_MAP_SIZE,
MaxReaders = MAX_READERS
};
_environment = new LightningEnvironment(DataPath, config);
var openFlags = EnvironmentOpenFlags.WriteMap |
EnvironmentOpenFlags.NoMetaSync |
EnvironmentOpenFlags.MapAsync |
EnvironmentOpenFlags.NoThreadLocalStorage;
_environment.Open(openFlags);
_openDatabases = new ConcurrentDictionary<string, LightningDatabase>();
_writeOperationsQueue = new BlockingCollection<WriteOperation>();
_cancellationTokenSource = new CancellationTokenSource();
_cancellationToken = _cancellationTokenSource.Token;
Task.Factory.StartNew(() => BackgroundWriter(), TaskCreationOptions.LongRunning);
}
/// <summary>
/// Creates a new instance of LightningEnvironment.
/// </summary>
/// <param name="path">Directory for storing database files.</param>
/// <param name="configuration">Configuration for the environment.</param>
public LightningEnvironment(string path, EnvironmentConfiguration configuration = null)
{
if (string.IsNullOrWhiteSpace(path))
throw new ArgumentException("Invalid directory name");
mdb_env_create(out _handle);
Path = path;
var config = configuration ?? _config;
config.Configure(this);
_config = config;
}
/// <summary>
/// Creates a new instance of LightningEnvironment.
/// </summary>
/// <param name="path">Directory for storing database files.</param>
/// <param name="configuration">Configuration for the environment.</param>
public LightningEnvironment(string path, EnvironmentConfiguration configuration = null)
{
if (string.IsNullOrWhiteSpace(path))
{
throw new ArgumentException("Invalid directory name");
}
mdb_env_create(out _handle);
Path = path;
_config = configuration ?? new EnvironmentConfiguration();
_config.Configure(this);
}
/// <summary>
/// Creates a new instance of LightningEnvironment.
/// </summary>
/// <param name="path">Directory for storing database files.</param>
/// <param name="configuration">Configuration for the environment.</param>
public LightningEnvironment(string path, EnvironmentConfiguration configuration = null)
{
if (string.IsNullOrWhiteSpace(path))
{
throw new ArgumentException("Invalid directory name");
}
var config = configuration ?? _config;
#if NETCOREAPP3_1 || NET5_0 || NET6_0
if (config.AutoResizeWindows)
{
LoadWindowsAutoResizeLibrary();
}
#endif
mdb_env_create(out _handle).ThrowOnError();
config.Configure(this);
_config = config;
Path = path;
}