/// <summary>
/// End processing an intrinsic.
/// </summary>
public void ExitIntrinsic()
{
var lastIntrinsicInfo = this.currentIntrinsicInfo;
this.currentIntrinsicInfo = this.intrinsicInfos.Pop();
if (this.currentIntrinsicInfo != null)
{
return;
}
// Recursion has returned to the "top level" intrinsic, so store it.
if (this.lastWarning == null)
{
this.ReferenceLocations.Add(lastIntrinsicInfo);
}
else
{
// Process the warning
this.warnings.Add(this.lastWarning.Message);
this.lastWarning = null;
}
this.parentIntrinsicPath = null;
}
/// <summary>
/// Creates a modification record.
/// </summary>
/// <param name="jsonValue">The JSON value that will be replaced.</param>
/// <param name="context">The context.</param>
/// <param name="intrinsicInfo">The intrinsic information.</param>
private static void CreateModification(
JValue jsonValue,
TerraformAttributeSetterContext context,
IntrinsicInfo intrinsicInfo)
{
var intrinsic = intrinsicInfo.Intrinsic;
// ReSharper disable once SwitchStatementMissingSomeEnumCasesNoDefault
switch (intrinsic.Type)
{
case IntrinsicType.Base64:
case IntrinsicType.Cidr:
case IntrinsicType.Split:
case IntrinsicType.Ref:
case IntrinsicType.Select:
case IntrinsicType.FindInMap:
case IntrinsicType.GetAtt:
case IntrinsicType.Join:
case IntrinsicType.Sub:
case IntrinsicType.ImportValue:
context.Modifications.Add(
new StateModification(
jsonValue,
context.Index,
context.ContainingProperty,
intrinsic.Render(context.Template, intrinsicInfo.TargetResource, context.Inputs)));
break;
}
}
/// <summary>
/// Begin processing an intrinsic.
/// </summary>
/// <param name="intrinsic">The intrinsic.</param>
/// <param name="currentPath">The current path.</param>
public void EnterIntrinsic(IIntrinsic intrinsic, PropertyPath currentPath)
{
if (this.lastWarning != null)
{
// Something that can't be resolved has been found,
// so don't process any more here.
return;
}
var clonedPath = currentPath.Clone();
try
{
if (this.parentIntrinsicPath == null)
{
// This is a "top level" intrinsic associated directly with a resource attribute.
if (this.currentCloudFormationResource.Type == "AWS::Lambda::Permission" &&
currentPath.Path == "FunctionName" && intrinsic is RefIntrinsic)
{
// !! NASTY KLUDGE ALERT !!
// AWS treats this property as a !Ref which is lambda function's name, but terraform actually wants the ARN here.
// If I find more cases like this, then I'll put something into resource traits
intrinsic = new GetAttIntrinsic(
intrinsic.GetReferencedObjects(this.template).First(),
"Arn");
}
this.intrinsicInfos.Push(this.currentIntrinsicInfo);
this.parentIntrinsicPath = clonedPath;
this.currentIntrinsicInfo = this.GetIntrinsicInfo(intrinsic, currentPath);
}
else
{
// We have descended the graph to member intrinsic
this.intrinsicInfos.Push(this.currentIntrinsicInfo);
var intrinsicInfo = this.GetIntrinsicInfo(intrinsic, currentPath);
this.currentIntrinsicInfo.NestedIntrinsics.Add(intrinsicInfo);
this.currentIntrinsicInfo = intrinsicInfo;
}
}
catch (DependencyResolutionWarning w)
{
this.lastWarning = w;
}
}
/// <summary>
/// Hooks up a module input to a <see cref="Reference"/> that gets its value.
/// </summary>
/// <param name="referencedModule">The referenced module.</param>
/// <param name="intrinsicInfo">The intrinsic information.</param>
/// <param name="reference">The reference.</param>
private static void ApplyModuleInputReference(
ModuleInfo referencedModule,
IntrinsicInfo intrinsicInfo,
Reference reference)
{
// Find input with value matching the intrinsic evaluation
var index = GetModuleInputIndex(
referencedModule.Inputs,
tuple => tuple.Item1.ScalarIdentity == intrinsicInfo.Evaluation.ToString());
if (index != -1)
{
// Overwrite the original scalar input with a new reference.
referencedModule.Inputs[index] = new ModuleInputVariable(
referencedModule.Inputs[index].Name,
reference);
}
}