public static OperationResult Set(string key, object value, uint flags)
{
StoreObject obj = new StoreObject();
obj.Flags = flags;
obj.Value = value;
lock (_ht)
{
_ht[key] = obj;
}
OperationResult result = new OperationResult();
result.ReturnResult = Result.SUCCESS;
ulong cas=1;
result.Value = cas;
return result;
}
public OperationResult Add(string key, uint flags, long expirationTimeInSeconds, object dataBlock)
{
if (string.IsNullOrEmpty(key) || dataBlock == null)
ThrowInvalidArgumentsException();
OperationResult returnObject = new OperationResult();
try
{
returnObject = AddItemSuccessfully(key, flags, expirationTimeInSeconds, dataBlock);
}
catch (Exception e)
{
ThrowCacheRuntimeException(e);
}
return returnObject;
}
public OperationResult InitCache(string cacheID)
{
if (string.IsNullOrEmpty(cacheID))
ThrowInvalidArgumentsException();
OperationResult returnObject = new OperationResult();
try
{
_cache = Alachisoft.NCache.Web.Caching.NCache.InitializeCache(cacheID);
if (!_cache.Contains(ItemVersionKey))
{
_cache.Add(ItemVersionKey, ItemVersionValue);
}
returnObject = CreateReturnObject(Result.SUCCESS, null);
}
catch (Exception e)
{
ThrowCacheRuntimeException(e);
}
return returnObject;
}
//Private common store method.
private string store(string command, string key, bool keyIsChecked, object value, uint hash, int expiry, ulong unique) {
if (!keyIsChecked) {
checkKey(key);
}
SerializedType type;
byte[] bytes;
try
{
bytes = Serializer.Serialize(value, out type, CompressionThreshold);
}
catch (Exception e)
{
//If serialization fails, return false;
logger.Error("Error serializing object for key '" + key + "'.", e);
return "";
}
string commandResult = "";
if (memcachedProvider == null)
{
ConnectionError();
return "";
}
OperationResult opResult = new OperationResult();
try
{
switch (command)
{
case "set":
opResult = memcachedProvider.Set(key, (ushort)type, expiry, bytes);
break;
case "add":
opResult = memcachedProvider.Add(key, (ushort)type, expiry, bytes);
break;
case "replace":
opResult = memcachedProvider.Replace(key, (ushort)type, expiry, bytes);
break;
case "append":
opResult = memcachedProvider.Append(key, bytes, unique);
break;
case "prepend":
opResult = memcachedProvider.Prepend(key, bytes, unique);
break;
case "cas":
opResult = memcachedProvider.CheckAndSet(key, (ushort)type, expiry, unique, bytes);
break;
}
if (command.Equals("replace") && opResult.ReturnResult == Result.ITEM_NOT_FOUND)
commandResult = "NOT_STORED";
else
switch (opResult.ReturnResult)
{
case Result.SUCCESS:
commandResult = "STORED";
break;
case Result.ITEM_EXISTS:
commandResult = "NOT_STORED";
break;
case Result.ITEM_NOT_FOUND:
commandResult = "NOT_FOUND";
break;
case Result.ITEM_MODIFIED:
commandResult = "EXISTS";
break;
}
}
catch (InvalidArgumentsException e)
{
commandResult = "CLIENT_ERROR bad command line format";
}
catch (CacheRuntimeException e)
{
commandResult = "SERVER_ERROR";
}
return commandResult;
}
/// <summary>
/// Stores data to cache.
///
/// If data does not already exist for this key on the server, or if the key is being
/// deleted, the specified value will not be stored.
/// The server will automatically delete the value when the expiration time has been reached.
///
/// If compression is enabled, and the data is longer than the compression threshold
/// the data will be stored in compressed form.
///
/// As of the current release, all objects stored will use .NET serialization.
/// </summary>
/// <param name="cmdname">action to take (set, add, replace)</param>
/// <param name="key">key to store cache under</param>
/// <param name="value">object to cache</param>
/// <param name="expiry">expiration</param>
/// <param name="hashCode">if not null, then the int hashcode to use</param>
/// <param name="asString">store this object as a string?</param>
/// <returns>true/false indicating success</returns>
private bool Set(string cmdname, string key, object obj, DateTime expiry, object hashCode, bool asString)
{
if(expiry < DateTime.Now)
return true;
if(cmdname == null || cmdname.Trim().Length == 0 || key == null || key.Length == 0)
{
if(log.IsErrorEnabled)
{
log.Error(GetLocalizedString("set key null"));
}
return false;
}
if (memcachedProvider == null)
{
if (log.IsErrorEnabled)
{
log.Error(GetLocalizedString("failed to get socket").Replace("$$Host$$","localhost"));
}
return false;
}
if (expiry == DateTime.MaxValue)
expiry = new DateTime(0);
// store flags
int flags = 0;
// byte array to hold data
byte[] val;
int length = 0;
// useful for sharing data between .NET and non-.NET
// and also for storing ints for the increment method
if(NativeHandler.IsHandled(obj))
{
if(asString)
{
if(obj != null)
{
if(log.IsInfoEnabled)
{
log.Info(GetLocalizedString("set store data as string").Replace("$$Key$$", key).Replace("$$Class$$", obj.GetType().Name));
}
try
{
val = UTF8Encoding.UTF8.GetBytes(obj.ToString());
}
catch(ArgumentException ex)
{
if(log.IsErrorEnabled)
{
log.Error(GetLocalizedString("set invalid encoding").Replace("$$Encoding$$", _defaultEncoding), ex);
}
return false;
}
}
else
{
val = new byte[0];
length = 0;
}
}
else
{
if(log.IsInfoEnabled)
{
log.Info(GetLocalizedString("set store with native handler"));
}
try
{
val = NativeHandler.Encode(obj);
length = val.Length;
}
catch(ArgumentException e)
{
if(log.IsErrorEnabled)
{
log.Error(GetLocalizedString("set failed to native handle object"), e);
}
return false;
}
}
}
else
{
if(obj != null)
{
if(log.IsInfoEnabled)
{
log.Info(GetLocalizedString("set serializing".Replace("$$Key$$", key).Replace("$$Class$$", obj.GetType().Name)));
}
// always serialize for non-primitive types
try
{
MemoryStream memStream = new MemoryStream();
new BinaryFormatter().Serialize(memStream, obj);
val = memStream.GetBuffer();
length = (int) memStream.Length;
flags |= F_SERIALIZED;
}
catch(IOException e)
{
// if we fail to serialize, then
// we bail
if(log.IsErrorEnabled)
{
log.Error(GetLocalizedString("set failed to serialize").Replace("$$Object$$", obj.ToString()), e);
}
return false;
}
}
else
{
val = new byte[0];
length = 0;
}
}
// now try to compress if we want to
// and if the length is over the threshold
if(_compressEnable && length > _compressThreshold)
{
if(log.IsInfoEnabled)
{
log.Info(GetLocalizedString("set trying to compress data"));
log.Info(GetLocalizedString("set size prior").Replace("$$Size$$", length.ToString(new NumberFormatInfo())));
}
try
{
MemoryStream memoryStream = new MemoryStream();
GZipOutputStream gos = new GZipOutputStream(memoryStream);
gos.Write(val, 0, length);
gos.Finish();
// store it and set compression flag
val = memoryStream.GetBuffer();
length = (int)memoryStream.Length;
flags |= F_COMPRESSED;
if(log.IsInfoEnabled)
{
log.Info(GetLocalizedString("set compression success").Replace("$$Size$$", length.ToString(new NumberFormatInfo())));
}
}
catch(IOException e)
{
if(log.IsErrorEnabled)
{
log.Error(GetLocalizedString("set compression failure"), e);
}
}
}
// now write the data to the cache server
try
{
OperationResult opResult = new OperationResult();
switch (cmdname)
{
case "set":
opResult = memcachedProvider.Set(key, (uint)flags, GetExpirationTime(expiry), val);
break;
case "add":
opResult = memcachedProvider.Add(key, (uint)flags, GetExpirationTime(expiry), val);
break;
case "replace":
opResult = memcachedProvider.Replace(key, (uint)flags, GetExpirationTime(expiry), val);
break;
}
string line = "";
if (cmdname.Equals("replace") && opResult.ReturnResult == Result.ITEM_NOT_FOUND)
line = "NOT_STORED";
else
switch (opResult.ReturnResult)
{
case Result.SUCCESS:
line = "STORED";
break;
case Result.ITEM_EXISTS:
line = "NOT_STORED";
break;
case Result.ITEM_NOT_FOUND:
line = "NOT_FOUND";
break;
case Result.ITEM_MODIFIED:
line = "EXISTS";
break;
}
string cmd = cmdname + " " + key + " " + flags + " "
+ GetExpirationTime(expiry) + " " + length + "\r\n";
if(log.IsInfoEnabled)
{
log.Info(GetLocalizedString("set memcached command result").Replace("$$Cmd$$", cmd).Replace("$$Line$$", line));
}
if(STORED == line)
{
if(log.IsInfoEnabled)
{
log.Info(GetLocalizedString("set success").Replace("$$Key$$", key));
}
return true;
}
else if(NOTSTORED == line)
{
if(log.IsInfoEnabled)
{
log.Info(GetLocalizedString("set not stored").Replace("$$Key$$", key));
}
}
else
{
if(log.IsErrorEnabled)
{
log.Error(GetLocalizedString("set error").Replace("$$Key$$", key).Replace("$$Size$$", length.ToString(new NumberFormatInfo())).Replace("$$Line$$", line));
}
}
}
catch(Exception e)
{
// exception thrown
if(log.IsErrorEnabled)
{
log.Error(GetLocalizedString("set IOException"), e);
}
}
return false;
}
public OperationResult Replace(string key, uint flags, long expirationTimeInSeconds, object dataBlock)
{
if (string.IsNullOrEmpty(key) || dataBlock == null)
ThrowInvalidArgumentsException();
OperationResult returnObject = new OperationResult();
try
{
if (_cache.Contains(key))
returnObject = InsertItemSuccessfully(key, flags, expirationTimeInSeconds, dataBlock);
else
returnObject = CreateReturnObject(Result.ITEM_NOT_FOUND, null);
}
catch (Exception e)
{
ThrowCacheRuntimeException(e);
}
return returnObject;
}
private OperationResult JoinObjects(string key, CacheItem cacheItem, object objectToJoin, UpdateType updateType)
{
OperationResult returnObject = new OperationResult();
ObjectArrayData objectDataArray = GetObjectArrayData(((MemcachedItem)cacheItem.Value).Data);
byte[] originalByteObject = objectDataArray.dataBytes;
byte[] byteObjectToJoin = (byte[])objectToJoin;
byte[] joinedObject = new byte[originalByteObject.Length + byteObjectToJoin.Length];
if (updateType == UpdateType.Append)
{
System.Buffer.BlockCopy(originalByteObject, 0, joinedObject, 0, originalByteObject.Length);
System.Buffer.BlockCopy(byteObjectToJoin, 0, joinedObject, originalByteObject.Length, byteObjectToJoin.Length);
}
else
{
System.Buffer.BlockCopy(byteObjectToJoin, 0, joinedObject, 0, byteObjectToJoin.Length);
System.Buffer.BlockCopy(originalByteObject, 0, joinedObject, byteObjectToJoin.Length, originalByteObject.Length);
}
try
{
MemcachedItem memCacheItem = new MemcachedItem();
memCacheItem.Data = CreateObjectArray(objectDataArray.flags, joinedObject);
ulong getVersion = GetLatestVersion();
memCacheItem.InternalVersion = getVersion;
cacheItem.Value = memCacheItem;
_cache.Insert(key, cacheItem);
returnObject = CreateReturnObject(Result.SUCCESS, getVersion);
}
catch (Exception e)
{
ThrowCacheRuntimeException(e);
}
return returnObject;
}
private OperationResult CreateReturnObject(Result result, object value)
{
OperationResult returnObject = new OperationResult();
returnObject.ReturnResult = result;
returnObject.Value = value;
return returnObject;
}
private OperationResult Concat(string key, object dataToPrepend, ulong casUnique, UpdateType updateType)
{
if (string.IsNullOrEmpty(key) || dataToPrepend == null)
ThrowInvalidArgumentsException();
OperationResult returnObject = new OperationResult();
try
{
CacheItem getObject = _cache.GetCacheItem(key);
if (getObject == null)
returnObject = CreateReturnObject(Result.ITEM_NOT_FOUND, null);
else if (getObject.Value == null)
returnObject = CreateReturnObject(Result.ITEM_NOT_FOUND, null);
else
{
MemcachedItem memCacheItem = (MemcachedItem)getObject.Value;
if ((casUnique > 0 && memCacheItem.InternalVersion == casUnique) || casUnique == 0)
returnObject = JoinObjects(key, getObject, dataToPrepend, updateType);
else
returnObject = CreateReturnObject(Result.ITEM_MODIFIED, null);
}
}
catch (Exception e)
{
ThrowCacheRuntimeException(e);
}
return returnObject;
}
private OperationResult AddItemSuccessfully(string key, uint flags, long expirationTimeInSeconds, object dataBlock)
{
if (expirationTimeInSeconds < 0)
return CreateReturnObject(Result.SUCCESS, 0);
OperationResult returnObject = new OperationResult();
try
{
ulong getVersion = GetLatestVersion();
CacheItem cacheItem = CreateCacheItem(flags, dataBlock, expirationTimeInSeconds, getVersion);
_cache.Add(key, cacheItem);
returnObject.Value = getVersion;
returnObject.ReturnResult = Result.SUCCESS;
}
catch (Alachisoft.NCache.Runtime.Exceptions.OperationFailedException e)
{
returnObject = CreateReturnObject(Result.ITEM_EXISTS, null);
}
catch (Exception e)
{
ThrowCacheRuntimeException(e);
}
return returnObject;
}
private OperationResult InsertItemSuccessfully(string key, uint flags, long expirationTimeInSeconds, object dataBlock)
{
if (expirationTimeInSeconds < 0)
return CreateReturnObject(Result.SUCCESS, 0);
OperationResult returnObject = new OperationResult();
try
{
ulong getVersion = GetLatestVersion();
CacheItem cacheItem = CreateCacheItem(flags, dataBlock, expirationTimeInSeconds, getVersion);
_cache.Insert(key, cacheItem);
returnObject.Value = getVersion;
returnObject.ReturnResult = Result.SUCCESS;
}
catch (Exception e)
{
ThrowCacheRuntimeException(e);
}
return returnObject;
}
public OperationResult Touch(string key, long expirationTimeInSeconds)
{
if (string.IsNullOrEmpty(key))
ThrowInvalidArgumentsException();
OperationResult returnObject = new OperationResult();
try
{
CacheItemAttributes attributes = new CacheItemAttributes();
attributes.AbsoluteExpiration = CreateExpirationDate(expirationTimeInSeconds);
bool result = _cache.SetAttributes(key, attributes);
if (result)
returnObject = CreateReturnObject(Result.SUCCESS, null);
else
returnObject = CreateReturnObject(Result.ITEM_NOT_FOUND, null);
}
catch (Exception e)
{
ThrowCacheRuntimeException(e);
}
return returnObject;
}
public OperationResult Flush_All(long expirationTimeInSeconds)
{
OperationResult returnObject = new OperationResult();
try
{
if (expirationTimeInSeconds == 0)
{
ulong getVersion =(ulong) _cache.Get(ItemVersionKey);
_cache.Clear();
if (getVersion != null)
{
_cache.Insert(ItemVersionKey, getVersion);
}
else
{
_cache.Insert(ItemVersionKey, ItemVersionValue);
}
}
else
{
long dueTimeInMilliseconds = expirationTimeInSeconds*1000;
_timer = new Timer(FlushExpirationCallBack, null, dueTimeInMilliseconds, 0);
}
returnObject = CreateReturnObject(Result.SUCCESS, null);
}
catch (Exception e)
{
ThrowCacheRuntimeException(e);
}
return returnObject;
}
public OperationResult Delete(string key, ulong casUnique)
{
if (string.IsNullOrEmpty(key))
ThrowInvalidArgumentsException();
OperationResult returnObject = new OperationResult();
try
{
if (casUnique == 0)
{
Object obj = _cache.Remove(key);
if (obj == null)
returnObject = CreateReturnObject(Result.ITEM_NOT_FOUND, null);
else
returnObject = CreateReturnObject(Result.SUCCESS, null);
}
else
{
CacheItem item = _cache.GetCacheItem(key);
if (item == null)
returnObject = CreateReturnObject(Result.ITEM_NOT_FOUND, null);
else
{
MemcachedItem memCacheItem = (MemcachedItem)item.Value;
if (memCacheItem.InternalVersion != casUnique)
{
returnObject = CreateReturnObject(Result.ITEM_MODIFIED, null);
}
else
{
_cache.Delete(key);
returnObject = CreateReturnObject(Result.SUCCESS, null);
}
}
}
}
catch (Exception e)
{
ThrowCacheRuntimeException(e);
}
return returnObject;
}
public OperationResult CheckAndSet(string key, uint flags, long expirationTimeInSeconds, ulong casUnique, object dataBlock)
{
if (string.IsNullOrEmpty(key) || dataBlock == null )
ThrowInvalidArgumentsException();
OperationResult returnObject = new OperationResult();
try
{
CacheItem getCacheItem = _cache.GetCacheItem(key);
if (getCacheItem == null)
returnObject = CreateReturnObject(Result.ITEM_NOT_FOUND, null);
else
{
MemcachedItem memCacheItem = (MemcachedItem)getCacheItem.Value;
if (memCacheItem.InternalVersion == casUnique)
returnObject = InsertItemSuccessfully(key, flags, expirationTimeInSeconds, dataBlock);
else
returnObject = CreateReturnObject(Result.ITEM_MODIFIED, null);
}
}
catch (Exception e)
{
ThrowCacheRuntimeException(e);
}
return returnObject;
}
