public bool TryGetConfigurationData(string name, IEnumerable<string> environmentSequence, out IConfigurationDataHandle configurationData)
{
lock(lockObject)
{
JsonFileConfigurationDataHandle result = null;
if ( configurationDataHandles.TryGetValue(name,out result))
{
configurationData = result;
return true;
}
var fullFilename = Path.Combine(rootDirectory.FullName, name + "." + extension);
if ( System.IO.File.Exists(fullFilename))
{
try
{
var newHandle = new JsonFileConfigurationDataHandle(new FileInfo(fullFilename),name,
environmentSequence, maxWaitTime,
pollInterval);
configurationDataHandles.Add(name,newHandle);
configurationData = newHandle;
return true;
}
catch(OperationCanceledException)
{}
catch(IOException)
{}
}
}
configurationData = null;
return false;
}
public ConfigurationModelHandle(IConfigurationDataHandle dataHandle,Type modelType)
{
this.dataHandle = dataHandle;
this.modelType = modelType;
this.model = Map(dataHandle != null ? dataHandle.Data : null);
if ( this.model == null )
{
throw new InvalidOperationException(string.Format("Unable to read configuration {0} into configuration model {1}",dataHandle.Name,modelType));
}
if (this.dataHandle != null)
{
this.dataHandle.Changed += DataHandleOnChanged;
}
}
private void DataHandleOnChanged(IConfigurationDataHandle configurationDataHandle)
{
var newModel = Map(configurationDataHandle.Data);
if ( newModel != null )
{
Interlocked.Exchange(ref model, newModel);
var changedHandler = Changed;
if ( changedHandler != null )
{
changedHandler(this);
}
}
}