In my case I m creating a `ComponentResource` and want to us

Question

In my case I m creating a `ComponentResource` and want to use `await` in the `initialize` function as below ```export class MyComponent extends pulumi ComponentResource protected async initialize args Inputs Promise lt any gt await pulumi output args inputA apply value = gt ```

white-balloon-205 · Answer

In general it s not recommended to do this as you are losing the dependency information associated the Output which may lead to incorrect dependencies between resources But if you do need to do it there is a promise method that returns the underlying value promise It is private in TypeScript so you may need to cast to any What is the rest of what you are trying to do here I expect there is a cleaner way to accomplish it

boundless-airport-99052 · Answer

Thank < white balloon 205> for your answer It s related to my tests with pulumi 2 0 and I give an early feedback here But I m trying to simplify my use case in order to share them with you and to see if it s blocking or not

boundless-airport-99052 · Answer

< white balloon 205> to give you more details about my use case note I simplified the use case so the one detailed below could have inconsistencies I have a `ComponentResource` called `CustomSubnet` that could be instantiate several times Each `CustomSubnet` create nested resources BUT one of them resources should be created only once per `vnet` Let s call it `vnetRouteTable` Let say we can have `vnet1` created by another stack `CustomSubnetA` = gt must create`vnet1RouteTable` `CustomSubnetB` `vnet2` created by another stack `CustomSubnetX`= gt must create`vnet2RouteTable` `CustomSubnetY` With pulumi `1 x` the `CustomSubnet` args was taken a string `vnetName string` This value was used as a cache key to know if the corresponding `vnetRouteTable` has already been created or not The `vnetName` was retrieved from another stack output with `new StackReference requireOutputSync vnetName ` With pulumi `2 0` the method `requireOutputSync`has been removed so I use `requireOutput` which returns a `pulumi Output lt string gt ` My Issue I can t use this value anymore as cache key nor in pulumi resource name which takes a `string` So I was wondering what I can do slightly smiling face I understood the usage of `pulumi Output` in resource graph dependency but it s not a problem here as the resource has been created by another stack so loosing it is not an issue In tried several things 1 Use `initialize` method with ```const vnetName = await args vnetName as any promise ``` This seems to work but the code is less cleaner and I don t know what is the impact of creating other resources asynchronously here are there impacts on resources graph and dependencies 2 Do not use `initialize` and defer that part of code using the cache in the ` apply` function like this ```args vnetName apply name = gt if inCache name this vnetRouteTable = new azure RouteTable else this vnetRouteTable = getFromCache name ``` The `vnetRouteTable` resource is created asynchronously and I do not know the impacts but the others resources are created as previously AFAIK I do not have another option Sorry for the long explanation but I tried to be concise and to simplify my use case 1 What are the impact in resource graph dependencies of solution 1 or 2 2 Do you see another solution 3 Are you sure you want to remove the `requireOutputSync` joy Best regards

boundless-airport-99052 · Answer

Hi < white balloon 205> I know it s a long message but I wonder if I do the right way In short I wonder if I can create a CustomComponent s sub resources in a `pulumi Output apply` callback if I know that the `pulumi Output` does not wrap a resource said differently if the `pulumi Output` is not used for dependency graph