public DefinitionItem(AssemblyDefinition targetAssemblyDefinition, TypeDefinition targetTypeDefinition, MethodDefinition targetMethodDefinition, Type integrationType, NativeCallTargetDefinition definition)
{
TargetAssemblyDefinition = targetAssemblyDefinition;
TargetTypeDefinition = targetTypeDefinition;
TargetMethodDefinition = targetMethodDefinition;
IntegrationType = integrationType;
Definition = definition;
}
private static NativeCallTargetDefinition[] ReadIntegrations(string path)
{
var assembly = Assembly.LoadFrom(path);
var instrumentationDefinitions = assembly.GetType("Datadog.Trace.ClrProfiler.InstrumentationDefinitions");
var method = instrumentationDefinitions.GetMethod("GetDefinitionsArray", BindingFlags.NonPublic | BindingFlags.Static);
var array = (Array)method.Invoke(null, null);
var elementType = array.GetType().GetElementType();
var disposeMethod = elementType.GetMethod("Dispose");
var definitionType = typeof(NativeCallTargetDefinition);
var result = new NativeCallTargetDefinition[array.Length];
IntPtr signaturesPtr = default;
for (int i = 0; i < array.Length; i++)
{
var boxedDefinition = (object)default(NativeCallTargetDefinition);
var obj = array.GetValue(i);
foreach (var field in elementType.GetFields())
{
if (field.Name == "TargetSignatureTypes")
{
signaturesPtr = (IntPtr)field.GetValue(obj);
continue;
}
definitionType.GetField(field.Name).SetValue(boxedDefinition, field.GetValue(obj));
}
var length = ((NativeCallTargetDefinition)boxedDefinition).TargetSignatureTypesLength;
var targetSignatureTypes = new string[length];
for (int j = 0; j < length; j++)
{
var ptr = Marshal.ReadIntPtr(signaturesPtr + Marshal.SizeOf <IntPtr>() * j);
targetSignatureTypes[j] = Marshal.PtrToStringUni(ptr);
}
disposeMethod.Invoke(obj, null);
result[i] = (NativeCallTargetDefinition)boxedDefinition;
result[i].TargetSignatureTypes = targetSignatureTypes;
}
return(result);
}
