private void AddSummarizer(Type summarizerType, VisualizationLogWriter logWriter, string assemblyPath)
{
logWriter.WriteLine("Loading Summarizer {0} from {1}...", summarizerType.Name, assemblyPath);
SummarizerMetadata summarizerMetadata = SummarizerMetadata.Create(summarizerType, logWriter);
if (summarizerMetadata != null)
{
this.summarizers[summarizerType] = summarizerMetadata;
}
}
/// <summary>
/// Creates one or two visualizer metadatas depending on whether a "Visualize in new panel" icon source path was suplied by the visualization object.
/// </summary>
/// <param name="visualizationObjectType">The visualization object type.</param>
/// <param name="summarizers">The list of known summarizers.</param>
/// <param name="dataAdapters">The list of known data adapters.</param>
/// <param name="logWriter">The log writer where errors should be written to.</param>
/// <returns>A list of visualizer metadatas.</returns>
public static List <VisualizerMetadata> Create(Type visualizationObjectType, Dictionary <Type, SummarizerMetadata> summarizers, List <StreamAdapterMetadata> dataAdapters, VisualizationLogWriter logWriter)
{
// Get the visualization object attribute
VisualizationObjectAttribute visualizationObjectAttribute = GetVisualizationObjectAttribute(visualizationObjectType, logWriter);
if (visualizationObjectAttribute == null)
{
return(null);
}
// Get the visualization panel type attribute
VisualizationPanelTypeAttribute visualizationPanelTypeAttribute = GetVisualizationPanelTypeAttribute(visualizationObjectType, logWriter);
if (visualizationPanelTypeAttribute == null)
{
return(null);
}
// Get the message data type for the visualization object. We will get nothing back
// if visualizationObjectType does not ultimately derive from VisualizationObject<TData>
Type visualizationObjectDataType = GetVisualizationObjectDataType(visualizationObjectType, logWriter);
if (visualizationObjectDataType == null)
{
return(null);
}
// Get the summarizer type (if the visualizer uses a summarizer)
SummarizerMetadata summarizerMetadata = null;
if (visualizationObjectAttribute.SummarizerType != null)
{
if (summarizers.ContainsKey(visualizationObjectAttribute.SummarizerType))
{
summarizerMetadata = summarizers[visualizationObjectAttribute.SummarizerType];
}
else
{
logWriter.WriteError("Unable to load visualizer {0} because it relies on summarizer {1} which could not be found.", visualizationObjectType.Name, visualizationObjectAttribute.SummarizerType.Name);
return(null);
}
}
// If we have a summarizer, make sure its output type matches the input type of the visualization object
if ((summarizerMetadata != null) && (summarizerMetadata.OutputType != visualizationObjectDataType))
{
logWriter.WriteError(
"Unable to load visualizer {0} with summarizer {1} because the output type of the summarizer ({2}) does not match the input type of the visualizer ({3}) .",
visualizationObjectType.Name,
summarizerMetadata.SummarizerType.Name,
summarizerMetadata.OutputType.Name,
visualizationObjectDataType.Name);
return(null);
}
// Work out the input (message) data type:
//
// 1) If there's a summarizer, use the summarizer's input type
// 2) Otherwise, use the visualization object's data type
Type dataType = summarizerMetadata != null ? summarizerMetadata.InputType : visualizationObjectDataType;
List <VisualizerMetadata> metadatas = new List <VisualizerMetadata>();
// Add the visualization metadata using no adapter
Create(metadatas, dataType, visualizationObjectType, visualizationObjectAttribute, visualizationPanelTypeAttribute, null);
// Find all the adapters that have an output type that's the same as the visualization object's data type (or summarizer input type)
List <StreamAdapterMetadata> usableAdapters = dataAdapters.FindAll(a => dataType == a.OutputType || dataType.IsSubclassOf(a.OutputType));
// Add the visualization metadata using each of the compatible adapters
foreach (StreamAdapterMetadata adapterMetadata in usableAdapters)
{
Create(metadatas, adapterMetadata.InputType, visualizationObjectType, visualizationObjectAttribute, visualizationPanelTypeAttribute, adapterMetadata);
}
return(metadatas);
}
