public virtual string ToSvg(IGraphDescriptor graphDescriptor, IUndirectedGraph<IContent, IUndirectedEdge<IContent>> graph, Action<GraphvizAlgorithm<IContent, IUndirectedEdge<IContent>>> initialization)
{
//var stringBuilder = new StringBuilder();
//using (var xmlWriter = XmlWriter.Create(stringBuilder))
//{
// // This may also need attributes on models, see: http://quickgraph.codeplex.com/wikipage?title=GraphML%20Serialization&referringTitle=Documentation
// graph.SerializeToGraphML<TNode, IUndirectedEdge<TNode>, IUndirectedGraph<TNode, IUndirectedEdge<TNode>>>(
// xmlWriter,
// node => node.Label,
// edge => edge.Source.ContentItem.Id.ToString() + edge.Target.ContentItem.Id.ToString());
//}
//var graphML = stringBuilder.ToString();
// Sadly graph.GetHashCode() gives different results on different requests, therefore only the dot hash
// is reliable. Fortunately it's quite fast.
var dotData = graph.ToGraphviz(algorithm =>
{
initialization(algorithm);
});
var filePath = "_AssociativyModules/Frontends/GraphImages/" + graphDescriptor.Name + "/" + dotData.GetHashCode() + ".svg";
var cacheKey = "Associativy.Frontends.Graphviz.GraphImages." + filePath;
return _cacheService.GetMonitored(graphDescriptor, cacheKey, () =>
{
using (var lockFile = _lockManager.TryAcquireLock(cacheKey))
{
return RetrieveImage(dotData, filePath);
}
});
}