Another Go newbie question here I m hoping someone can help

Question

Another Go newbie question here I m hoping someone can help me understand why different resources handle require different types More details and sample code threaded below

salmon-account-74572 · Answer

In one place of my code I create a series of subnets using `ec2 NewSubnet` across AZs within a region and then I capture the ID of the created subnets in an array this happens near the end of a `for` loop ```pubSubnetIds idx = subnet ID ``` Later I can reference that array when I create a NAT Gateway with `ec2 NewNatGateway` ```SubnetId pubSubnetIds 0 ``` However I can t do the same thing with route table associations in a `for` loop ```SubnetId pubSubnetIds idx ``` In that usage Pulumi reports that cannot use privSubnetIds idx type pulumi StringInput as type pulumi StringPtrInput in field value I get that they are different types apparently but a why are they apparently different types between resources b how is someone supposed to know this other than trial and error c what is the workaround solution

salmon-account-74572 · Answer

I can post upload more complete Go code if that would be helpful

wet-egg-6347 · Answer

a i d like to know the answer to this myself b if you look at the args struct that you re filling in you can see the expected types c call ToStringPtrOutput on your stringoutput

salmon-account-74572 · Answer

WRT to b I disagree In looking at the API reference for the NAT Gateway resource for example it simply lists SubnetId as string not StringInput or StringPtrInput or anything else

salmon-account-74572 · Answer

As for your suggestion to c that may fix the route table association issue but will very likely break other places like the NAT Gateway which currently works The issue is as I understand it thus far that I have one data source the list of subnet IDs and I need to represent that list in two different ways both StringInput and StringPtrInput

lemon-agent-27707 · Answer

yes can you please share the full sample It would be great to take a look at this

lemon-agent-27707 · Answer

I think the issue here is that `subnet ID ` is a `pulumi IDOutput` which implements `pulumi StringOutput` and `pulumi IDPointerOutpur` but not `pulumi StringPointerOutput`

lemon-agent-27707 · Answer

Which on the surface looks like a bug to me but I d have to double check

lemon-agent-27707 · Answer

nvm I m mistaken on that last point It does indeed implement ToStringPointerOutput Will be happy to debug based on a complete code sample

salmon-account-74572 · Answer

< lemon agent 27707> Here s the full Go code I m using

lemon-agent-27707 · Answer

can you also share your go mod

salmon-account-74572 · Answer

```module aws get azs go 1 14 require v2 0 0 v2 0 0 ```

lemon-agent-27707 · Answer

Looks like I might have a local fix `StringInput` and other input methods that implement the corresponding ptr type don t have the appropriate methods declared on their interfaces even thought the methods are implemented The type error goes away when I make this change to my SDK locally

lemon-agent-27707 · Answer

You can give it a try locally if you check out the branch into your $GOPATH and do a replace within your go mod <https github com pulumi pulumi pull 4911>

salmon-account-74572 · Answer

OK I ll see about giving that a try Thanks

salmon-account-74572 · Answer

< lemon agent 27707> I see your PR was merged any idea what release will include the fix

lemon-agent-27707 · Answer

< salmon account 74572> You should be able to consume the changes immediately by changing the dependency in your go mod to look like the following and grab the latest commit ``` v2 5 1 0 20200630183524 a8a20ecb4b1d``` and then run `go mod download`

lemon-agent-27707 · Answer

Not sure if we re doing a patch release this week but we ll have a minor version release next week

salmon-account-74572 · Answer

OK I have some other projects that have popped up this week so worst case scenario I can pick up the minor version release next week Thank you

salmon-account-74572 · Answer

< lemon agent 27707> I updated my `go mod` and ran `go mod download` and I can confirm that it did fix the original problem although VS Code s Go IntelliSense still thinks there s a problem Unfortunately now all instances of using `Pulumi Map` to create AWS tags are broken I ll create a separate thread to discuss that