public override void Write(ObjectStoreEntry entry)
{
}
public override void Write(ObjectStoreEntry entry)
{
using (var ms = new MemoryStream())
{
BinaryFormatter formatter = new BinaryFormatter();
formatter.Serialize(ms, entry.Value);
using (var cnn = getConnection())
using (var cmd = cnn.CreateCommand())
{
cmd.CommandText = INSERT_SQL;
cmd.Parameters.Add(new SqlParameter() { ParameterName = "@STORE_ID", Value = ComponentDirector.StoreGUID });
cmd.Parameters.Add(new SqlParameter() { ParameterName = "@OBJECT_ID", Value = entry.Key });
cmd.Parameters.Add(new SqlParameter()
{
ParameterName = "@CONTENT",
SqlDbType = SqlDbType.VarBinary,
Value = ms.GetBuffer()
}
);
cmd.ExecuteNonQuery();
}
}
}
public override void Delete(ObjectStoreEntry entry)
{
}
public override void Delete(ObjectStoreEntry entry)
{
using (var cnn = getConnection())
using (var cmd = cnn.CreateCommand())
{
cmd.CommandText = DELETE_SQL;
cmd.Parameters.Add(new SqlParameter() { ParameterName = "@STORE_ID", Value = ComponentDirector.StoreGUID });
cmd.Parameters.Add(new SqlParameter() { ParameterName = "@OBJECT_ID", Value = entry.Key });
cmd.Parameters.Add(new SqlParameter() { ParameterName = "@PURGE_AFTER_DAYS", Value = m_PurgeAfterDays });
cmd.ExecuteNonQuery();
}
}
public override IEnumerable<ObjectStoreEntry> LoadAll()
{
var now = App.LocalizedTime;
using (var cnn = getConnection())
using (var cmd = cnn.CreateCommand())
{
cmd.CommandText = SELECT_SQL;
cmd.Parameters.Add(new SqlParameter() { ParameterName = "@STORE_ID", Value = ComponentDirector.StoreGUID });
using (var reader = cmd.ExecuteReader())
while (reader.Read())
{
if (m_LoadLimit > 0 && m_LoadSize > m_LoadLimit)
{
WriteLog(MessageType.Info, "Load limit imposed", m_LoadLimit.ToString() + " bytes");
yield break;
}
Guid oid = (Guid)reader["OBJECT_ID"];
byte[] buf = reader["OBJECT_CONTENT"] as byte[];
BinaryFormatter formatter = new BinaryFormatter();
var entry = new ObjectStoreEntry();
try
{
entry.Value = formatter.Deserialize(new MemoryStream(buf));
}
catch (Exception error)
{
WriteLog(MessageType.Error, "Deserialization error: " + error.Message, oid.ToString());
continue;
}
m_LoadSize += buf.Length;
entry.Key = oid;
entry.LastTime = now;
entry.Status = ObjectStoreEntryStatus.Normal;
yield return entry;
}//while reader.read()
}
}
// storePath: c:\root
// Guid: facaca23423434dada
// ->
// c:\root\fa\ca\ca23423434dada.faca
private string getFileName(ObjectStoreEntry entry)
{
var key = entry.Key.ToString();
var path = Path.Combine(getStorePath(), key.Substring(0,2), key.Substring(2,2));
if (!Directory.Exists(path))
Directory.CreateDirectory(path);
return Path.Combine(path, key.Substring(4)+'.'+key.Substring(0,4));//for better file system tree balancing, first 4 chars moved as extension to the back
}
private ObjectStoreEntry readFile(string fname, ISerializer serializer, DateTime now, ref long priorLoadSize, Stopwatch clock)
{
using (var fs = new FileStream(fname, FileMode.Open))//, FileAccess.Read, FileShare.Read, 64*1024, FileOptions.SequentialScan))
{
var entry = new ObjectStoreEntry();
try
{
entry.Value = serializer.Deserialize(fs);
}
catch (Exception error)
{
WriteLog(MessageType.Error, "Deserialization error: " + error.Message, fname, FROM);
return null;
}
Interlocked.Add( ref m_LoadSize, fs.Length);
if (m_LoadSize-priorLoadSize > 32*1024*1024)
{
WriteLog(MessageType.Info, string.Format("Loaded disk bytes {0} in {1}", LoadSize, clock.Elapsed), null, FROM);
priorLoadSize = m_LoadSize;
}
entry.Key = getGUIDFromFileName(fname);
entry.LastTime = now;
entry.Status = ObjectStoreEntryStatus.Normal;
return entry;
}
}
public override void Delete(ObjectStoreEntry entry)
{
File.Delete(getFileName(entry));
}
public override void Write(ObjectStoreEntry entry)
{
using (var fs = new FileStream(getFileName(entry), FileMode.Create))
{
m_Serializer.Serialize(fs, entry.Value);
}
}
/// <summary>
/// Puts an object reference "value" into store identified by the "key".
/// The object is written in the provider when call count to this method equals to CheckOut()
/// </summary>
public void CheckIn(Guid key, object value, int msTimeout = 0)
{
if (Status != ControlStatus.Active) return;
if (value==null)
{
Delete(key);
return;
}
var bucket = getBucket(key);
ObjectStoreEntry entry = null;
bool isnew = false;
lock (bucket)
{
if (!bucket.TryGetValue(key, out entry))
{
isnew = true;
entry = new ObjectStoreEntry();
entry.Key = key;
entry.Status = ObjectStoreEntryStatus.ChekedIn;
entry.LastTime = App.LocalizedTime;
entry.MsTimeout = msTimeout;
entry.Value = value;
bucket.Add(key, entry);
}
}
if (!isnew)
lock (entry)
{
if (entry.Status == ObjectStoreEntryStatus.Deleted) return;
if (entry.CheckoutCount>0)
entry.CheckoutCount--;
if (entry.CheckoutCount==0)
entry.Status = ObjectStoreEntryStatus.ChekedIn;
entry.LastTime = App.LocalizedTime;
entry.MsTimeout = msTimeout;
entry.Value = value;
}
}
