/// <summary>
/// Tries to serialize the object fully to whichever storage medium is needed.
/// </summary>
/// <param name="objectKey">The data key to write i.e. character/</param>
/// <param name="dataToSerialize">object data to write</param>
/// <returns>true for success, false for failure</returns>
public bool writeObjectToDestination(string objectKey, GameDataStorageObject dataToSerialize)
{
bool successfulWrite = false;
switch (this.dataAccessType)
{
case GameDataStorageLayerUtils.DataStorageAreas.Network:
successfulWrite = true;
break;
case GameDataStorageLayerUtils.DataStorageAreas.FileSystem:
try
{
XmlSerializer x = new System.Xml.Serialization.XmlSerializer(dataToSerialize.GetType());
x.Serialize(new StreamWriter(this.locationString), dataToSerialize);
successfulWrite = true;
} catch (Exception e)
{
BaseGameDataStorageLayer.logData("Unable to serialize object to destinaton {0} due to {1}" + this.locationString + e.Message, GameDataStorageLayerUtils.LogLevels.Error);
}
break;
default:
return(false);
}
return(successfulWrite);
}
/// <summary>
/// Try to fetch the tuple at the index specified, return null if nothing was found or we ran into an exception.
/// </summary>
/// <param name="index">Index of an attribute</param>
/// <returns>Tuple<string,int> if no exception is reached, null otherwise.</returns>
public Tuple <DataType1, DataType2> getValueAt(int index)
{
try
{
return(dataList[index]);
}
catch (Exception ex)
{
BaseGameDataStorageLayer.logData("Error accessing attributeList {0}" + ex.Message, GameDataStorageLayerUtils.LogLevels.Error);
}
return(null);
}
/// <summary>
/// Empty the list.
/// </summary>
/// <returns>True if successful, otherwise false.</returns>
public bool removeAllElements()
{
try
{
dataList.RemoveRange(0, dataList.Count);
return(true);
} catch (Exception ex)
{
BaseGameDataStorageLayer.logData("Failed to clear out all elements in the list due to {0}" + ex.Message, GameDataStorageLayerUtils.LogLevels.Error);
return(false);
}
}
/// <summary>
/// Try to remove an item from the list at index
/// </summary>
/// <param name="index">Index to remove the element at.</param>
/// <returns>The removed element. Or null if no element.</returns>
public Tuple <DataType1, DataType2> removeItemAt(int index)
{
try
{
Tuple <DataType1, DataType2> removedElement = dataList[index];
dataList.RemoveAt(index);
return(removedElement);
} catch (Exception ex)
{
BaseGameDataStorageLayer.logData("Unable to remove element due to {0}" + ex.Message, GameDataStorageLayerUtils.LogLevels.Error);
}
return(null);
}
/// <summary>
/// Prepare to store the object, we may have to synchonize before we write
/// We will first check for locks and then write data as needed.
/// </summary>
/// <param name="objectToWrite">All Game objects to write in the dictionary.</param>
public void prepareToStoreObject(ConcurrentDictionary <string, GameDataStorageObject> objectToWrite)
{
try
{
foreach (KeyValuePair <string, GameDataStorageObject> kvpair in objectToWrite)
{
writeObjectToDestination(kvpair.Key, kvpair.Value);
}
}
catch (Exception e)
{
string exception = "Error unable to try to store object due to {0}" + e.Message;
BaseGameDataStorageLayer.logData(exception, GameDataStorageLayerUtils.LogLevels.Error);
}
}
/// <summary>
/// Adds a Tuple object to the end of the list.
/// </summary>
/// <param name="insertedData">Tuple of attribute data.</param>
/// <returns>Return success on successful insert, else false and log an error</returns>
public bool addTupleToList(Tuple <DataType1, DataType2> insertedData)
{
bool insertSuccessful = false;
try
{
dataList.Add(insertedData);
insertSuccessful = true;
}
catch (Exception ex)
{
BaseGameDataStorageLayer.logData("Unable to insert into the list due to {0}" + ex.Message, GameDataStorageLayerUtils.LogLevels.Error);
}
return(insertSuccessful);
}
/// <summary>
/// Insert a tuple at the index specified, if we don't want to replace something we'll add it to the end instead.
/// </summary>
/// <param name="tupleData">Data we want to add to the list.</param>
/// <param name="index">Index where we want to add it at.</param>
/// <param name="replace">Whether we want to replace the object at index, defaultly true.</param>
/// <returns>Returns boolean saying whether we were succesful or not.</returns>
public bool insertTupleAt(Tuple <DataType1, DataType2> tupleData, int index, bool replace = true)
{
bool insertSuccessful = false;
if (!replace)
{
return(addTupleToList(tupleData));
}
try
{
dataList.Insert(index, tupleData);
insertSuccessful = true;
} catch (Exception ex)
{
BaseGameDataStorageLayer.logData("Unable to insert data into the list due to {0}" + ex.Message, GameDataStorageLayerUtils.LogLevels.Error);
}
return(insertSuccessful);
}
/// <summary>
/// Open the data on the specified area and location (file name/hostname:uri)
/// </summary>
/// <returns>Boolean: true on successful opening and retrieving of storage data, false on failure.</returns>
public bool openData()
{
if (dataAccessType == GameDataStorageLayerUtils.DataStorageAreas.None || dataType == null)
{
BaseGameDataStorageLayer.logData("Unable to find location or dataType.", GameDataStorageLayerUtils.LogLevels.Fatal);
throw new System.ArgumentException("Storage location and dataTypes need to be defined.");
}
if (dataAccessType == GameDataStorageLayerUtils.DataStorageAreas.Network)
{
serializedGameData = getNetworkData(this.locationString);
return(true);
}
if (dataAccessType == GameDataStorageLayerUtils.DataStorageAreas.FileSystem)
{
serializedGameData = getSerializedDataFromDisk(this.locationString);
return(true);
}
return(false);
}
/// <summary>
/// Retrieve all serialized data from the disk, minimal processing needed.
/// </summary>
/// <param name="dataLocation">Location on disk to load.</param>
/// <returns>Array of bytes to deserialize into usable data.</returns>
public List <Tuple <string, byte[]> > getSerializedDataFromDisk(string dataLocation)
{
List <Tuple <string, byte[]> > data = null;
//Perhaps we should replace this with a LINQ statement
//as noted here: http://stackoverflow.com/questions/13301053/directory-getfiles-of-certain-extension
string[] fileNames = System.IO.Directory.GetFiles(dataLocation, "*.xml");
foreach (var file in fileNames)
{
try
{
if (File.Exists(dataLocation + "/" + file))
{
data.Add(new Tuple <string, byte[]>(file, File.ReadAllBytes(dataLocation + "/" + file)));
}
}
catch (Exception ex)
{
BaseGameDataStorageLayer.logData("Unable to open and read file due to {0}" + ex.Message, GameDataStorageLayerUtils.LogLevels.Error);
}
}
return(data);
}
