/// <summary>
/// Finds or creates the device specified in the settings node tree.
/// </summary>
/// <param name="deviceNode">The device node.</param>
/// <returns></returns>
public virtual IDevice FindOrCreateDevice(SettingsNode deviceNode)
{
string deviceName = deviceNode.Name;
if (deviceNode.ExistsAndHasAValue <string>("Name"))
{
deviceName = deviceNode["Name"].GetValueAs <string>();
}
if (!deviceNode.ContainsName("Model"))
{
Log.Error(this, "Device '{0}' has an undefined model type. Ensure that the device settings include a 'Model' node.", deviceName);
return(null);
}
string modelName = deviceNode["Model"].GetValueAs <string>();
string modelKey = modelName.ToLower();
if (!_validDeviceTypes.ContainsKey(modelKey))
{
Log.Error(this, "Device '{0}' has an unresolved device model type '{1}'. Device cannot be created.", deviceName, modelName);
return(null);
}
IDevice device = null;
IDevicePort port = null;
device = _devices.FirstOrDefault(d => deviceName.Equals(d.Name, StringComparison.CurrentCultureIgnoreCase));
if (device == null)
{
SettingsNode portNode = deviceNode["Port"];
if (portNode == null)
{
Log.Error(this, "Device '{0}' is using the default port.", deviceName);
}
else
{
try
{
Log.Info(this, "Device '{0}' discovering port settings...", deviceName);
port = CreatePort(portNode);
Log.Info(this, "Device '{0}' port settings = {1}", deviceName, port);
}
catch (Exception ex)
{
Log.Error(this, "Device '{0}' has invalid port settings. {1}", deviceName, ex);
Log.Error(this, "Device '{0}' is switching to the default port.", deviceName);
}
device = _devices.FirstOrDefault(d =>
modelName.Equals(d.GetType().Name, StringComparison.CurrentCultureIgnoreCase) &&
port.Equals(d.Port));
if (device != null)
{
Log.Error(this, "Device '{0}' has the same port settings as Device '{1}'.", deviceName, device.Name);
}
}
try
{
Type type = _validDeviceTypes[modelKey];
device = (IDevice)Activator.CreateInstance(type);
}
catch (Exception ex)
{
Log.Error(this, "Device '{0}' could not be instantiated.", deviceName);
Log.Error(this, ex.ToString());
return(null);
}
device.Name = deviceName;
device.Port = port;
_devices.Add(device);
}
if (deviceNode.ExistsAndHasAValue <bool>("Logging"))
{
device.Logging = deviceNode["Logging"].GetValueAs <bool>();
}
else if (deviceNode.ExistsAndHasAValue <bool>("Log"))
{
device.Logging = deviceNode["Log"].GetValueAs <bool>();
}
if (device.Logging)
{
Log.Info(this, "Device '{0}' logging is enabled.", deviceName);
}
return(device);
}