/// <summary>
/// Initialize LiteEngine using custom disk service implementation and full engine options
/// </summary>
public LiteEngine(IDiskService disk, string password = null, TimeSpan?timeout = null, int cacheSize = 5000, Logger log = null, bool utcDate = false)
{
if (disk == null)
{
throw new ArgumentNullException("disk");
}
_timeout = timeout ?? TimeSpan.FromMinutes(1);
_cacheSize = cacheSize;
_disk = disk;
_log = log ?? new Logger();
_bsonReader = new BsonReader(utcDate);
try
{
// initialize datafile (create) and set log instance
_disk.Initialize(_log, password);
// lock disk (read mode) before read header
var position = _disk.Lock(LockState.Read, _timeout);
var buffer = _disk.ReadPage(0);
_disk.Unlock(LockState.Read, position);
// create header instance from array bytes
var header = BasePage.ReadPage(buffer) as HeaderPage;
// hash password with sha1 or keep as empty byte[20]
var sha1 = password == null ? new byte[20] : AesEncryption.HashSHA1(password);
// compare header password with user password even if not passed password (datafile can have password)
if (sha1.BinaryCompareTo(header.Password) != 0)
{
throw LiteException.DatabaseWrongPassword();
}
// initialize AES encryptor
if (password != null)
{
_crypto = new AesEncryption(password, header.Salt);
}
// initialize all services
this.InitializeServices();
// if header are marked with recovery, do it now
if (header.Recovery)
{
_trans.Recovery();
}
}
catch (Exception)
{
// explicit dispose
this.Dispose();
throw;
}
}
/// <summary>
/// Initialize LiteEngine using custom disk service implementation and full engine options
/// </summary>
public LiteEngine(IDiskService disk, string password = null, TimeSpan?timeout = null, int cacheSize = 5000, Logger log = null)
{
if (disk == null)
{
throw new ArgumentNullException("disk");
}
_timeout = timeout ?? TimeSpan.FromMinutes(1);
_cacheSize = cacheSize;
_disk = disk;
_log = log ?? new Logger();
try
{
// initialize datafile (create) and set log instance
_disk.Initialize(_log, password);
// read header page
var header = BasePage.ReadPage(_disk.ReadPage(0)) as HeaderPage;
// hash password with sha1 or keep as empty byte[20]
var sha1 = password == null ? new byte[20] : AesEncryption.HashSHA1(password);
// compare header password with user password even if not passed password (datafile can have password)
if (sha1.BinaryCompareTo(header.Password) != 0)
{
throw LiteException.DatabaseWrongPassword();
}
// initialize AES encryptor
if (password != null)
{
_crypto = new AesEncryption(password, header.Salt);
}
// initialize all services
this.InitializeServices();
// try recovery if has journal file
_trans.Recovery();
}
catch (Exception)
{
// explicit dispose
this.Dispose();
throw;
}
}
/// <summary>
/// Initialize LiteEngine using custom disk service implementation and full engine options
/// </summary>
public LiteEngine(IDiskService disk, string password = null, TimeSpan? timeout = null, bool autocommit = true, int cacheSize = 5000, Logger log = null)
{
_timeout = timeout ?? TimeSpan.FromMinutes(1);
_cacheSize = cacheSize;
_autocommit = autocommit;
_disk = disk;
_log = log ?? new Logger();
_locker = new Locker(_timeout);
// initialize datafile (create) and set log instance
_disk.Initialize(_log, password);
// read header page
var header = BasePage.ReadPage(_disk.ReadPage(0)) as HeaderPage;
// hash password with sha1 or keep as empty byte[20]
var sha1 = password == null ? new byte[20] : AesEncryption.HashSHA1(password);
// compare header password with user password even if not passed password (datafile can have password)
if (sha1.BinaryCompareTo(header.Password) != 0)
{
// explicit dispose
_disk.Dispose();
throw LiteException.DatabaseWrongPassword();
}
// initialize AES encryptor
if (password != null)
{
_crypto = new AesEncryption(password, header.Salt);
}
// initialize all services
this.InitializeServices();
if (_disk.IsJournalEnabled)
{
// try recovery if has journal file
_trans.Recovery();
}
}
public DbEngine(IDiskService disk, Logger log)
{
// initialize disk service and check if database exists
var isNew = disk.Initialize();
// new database? create new datafile
if (isNew)
{
disk.CreateNew();
}
_log = log;
_disk = disk;
// initialize all services
_cache = new CacheService();
_pager = new PageService(_disk, _cache);
_indexer = new IndexService(_pager);
_data = new DataService(_pager);
_collections = new CollectionService(_pager, _indexer, _data);
_transaction = new TransactionService(_disk, _pager, _cache);
}
public DbEngine(IDiskService disk, Logger log)
{
// initialize disk service and check if database exists
var isNew = disk.Initialize();
// new database? just create header page and save it
if (isNew)
{
disk.WritePage(0, new HeaderPage().WritePage());
}
_log = log;
_disk = disk;
// initialize all services
_cache = new CacheService();
_pager = new PageService(_disk, _cache);
_indexer = new IndexService(_pager);
_data = new DataService(_pager);
_collections = new CollectionService(_pager, _indexer, _data);
_transaction = new TransactionService(_disk, _pager, _cache);
// check user verion
}
