private static ClassDeclarationSyntax GenerateReadGrain(ClassDeclarationSyntax grainClass, ITypeSymbol swmrInterface, int readReplicaCount)
{
string readGrainName = SwmrUtils.GetReadInterfaceName(grainClass.Identifier.Text);
string readerInterfaceName = SwmrUtils.GetReadInterfaceName(swmrInterface.Name);
ClassDeclarationSyntax readGrain = GenerateClassSqueleton(readGrainName).WithAttributeLists(AttributeUtils.AttributeListList(AttributeUtils.Attribute(StatelessWorkerAttributeName))).WithBaseList(RoslynUtils.BaseList(new[] { "Grain", readerInterfaceName }));
readGrain = RoslynUtils.AddField(readGrain, "ITopology<string>", "_topology");
readGrain = readGrain.AddMembers(GenerateOnActivateAsyncMethod(readReplicaCount));
string readReplicaInterfaceName = SwmrUtils.GetReadReplicaInterfaceName(swmrInterface.Name);
foreach (ISymbol member in swmrInterface.GetMembers())
{
IMethodSymbol methodSymbol = member as IMethodSymbol;
if (methodSymbol == null || !IsReadOnlyMethod(methodSymbol))
{
continue;
}
MethodInspector methodInspector = new MethodInspector(methodSymbol);
string parameters = "string sessionId";
if (methodInspector.MethodParams.Any())
{
parameters = string.Join(", ", methodInspector.MethodParams.Select(param => string.Format("{0} {1}", param.Value, param.Key))) + " ," + parameters;
}
var method = RoslynUtils.ParseMethod(string.Format(
@"
public {0} {1}({2})
{{
string sessionNode = _topology.GetNode(sessionId);
var readReplica = GrainFactory.GetGrain<{3}>(sessionNode);
return readReplica.{1}({4});
}}", methodInspector.ReturnType, methodInspector.MethodName, parameters, readReplicaInterfaceName, string.Join(", ", methodInspector.MethodParams.Keys)));
readGrain =
readGrain.AddMembers(
method.WithLeadingTrivia(SF.EndOfLine("")));
}
return(readGrain);
}