Hi, I came back with another question: I have a stack that consists of a

ComponentResource

like

public class EcsService : ComponentResource
    {
        public EcsService(string name, EcsServiceResourceOptions options)
            : base("foo:pulumi:ecs", name, options)
        {
             ...
             var parameters = new List<Pulumi.Aws.Ssm.Parameter>();

            foreach (KeyValuePair<string, string> variable in options.EnvironmentVariables) // EnvironmentVariables is InputMap<string>
            {
                var Parameter = new Pulumi.Aws.Ssm.Parameter(variable.Key, 
                ...
                , new CustomResourceOptions { Parent = this });
                parameters.Add(Parameter);
            }
            ...
         }
     }

I’m trying to use this component like:

class Program
    {
        static Task<int> Main()
        {
            return Deployment.RunAsync(() =>
            {
                var config = new Config();

                var environmentVariables = new InputMap<string>();

                foreach (var item in config.RequireObject<JsonElement>("environmentVariables").EnumerateObject()) //those environmentVariables are inserted as pulumi config set --path environmentVariables.foo val .. etc
                    environmentVariables.Add(item.Name, item.Value.GetString());

                var service = new EcsService(config.Require("name"), new EcsServiceResourceOptions
                {
                    ...
                    EnvironmentVariables = environmentVariables,
                    ...
                });
      }

I’m getting the following exception:

error: Running program '....' failed with an unhandled exception:
    System.NotSupportedException: A Pulumi.InputMap`1[[System.String, System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]] cannot be synchronously enumerated. Use GetAsyncEnumerator instead.

But I can’t await the foreach in the constructor of

EcsService

, any advice ? And what you think around the way I’m importing multiple key/value pairs from config into an InputMap<string>, is there better way ?

Yes, you can’t enumarate

InputMap

because it may contain unresolved values.

EcsServiceResourceOptions

is a class of yours, right? If so, you could make

EnvironmentVariables

just a normal C# dictionary and iterate through it. Alternatively, you’d need to use

Apply

on

InputMap

and do the processing inside. However, creating resources inside

Apply

should generally be avoided.

for

EcsServiceResourceOptions

correct, it’s mine Thanks for the suggestion on using dictionary

.Apply(arn => arn)

does nothing. You can’t await outputs. Instead, you could convert a list of outputs to an output of list with

Output.All

, however this means that you have to make your

GetPolicyDocument

call inside an

Apply

.

@tall-librarian-49374, the Output.All accepts a list of Inputs, not Outputs. Am I missing something ?

Each Output is assignable to Input. I guess we may need to add an overload for list of outputs.

The final taskInlineRoleDocument would look like

var taskInlineRoleDocument = Output.All<string>(parameters.Select(_ => _.Arn).Cast<Input<string>>().ToArray())
            .Apply(async list =>
            {
                return await Pulumi.Aws.Iam.Invokes.GetPolicyDocument(new Pulumi.Aws.Iam.GetPolicyDocumentArgs
                {
                    Statements =
                    {
                        new Pulumi.Aws.Iam.Inputs.GetPolicyDocumentStatementsArgs {
                            Effect = "Allow",
                            Resources = list.ToList(),
                            Actions = { "ssm:GetParameters", "ssm:GetParameter" }
                        },
                    }
                });
            });

But I’m getting `System.InvalidCastException: Unable to cast object of type ‘Pulumi.Output`1[System.String]’ to type ’Pulumi.Input`1[System.String]. ` my understanding that assignable should mean castable.

Yeah,

Cast

doesn’t work with implicit/explicit conversions https://stackoverflow.com/questions/13316718/explicit-implicit-cast-operator-fails-when-using-linqs-cast-operator

Thank @tall-librarian-49374, great work ! I will give it a shot with a PR, let me try contribute 😄