Vary Stdin for Create/Update/Delete

[rgl]

Hello!

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Issue details

Currently, there is a single Stdin property, which, when set, will be used in all the supported actions. This is somewhat odd, because we might want to use a different input/script for each action.

For example, this is what I'm currently using in C# (the full example at https://github.com/rgl/dotnet-pulumi-libvirt-ubuntu-example/blob/main/Program.cs):

    var informationCommand = new Command("information", new CommandArgs
    {
        Connection = new ConnectionArgs
        {
            Host = domain.NetworkInterfaces.GetAt(0).Apply(n => n.Addresses[0]),
            User = sshUser,
            PrivateKey = sshPrivateKey,
        },
        Create = "/bin/bash",
        Stdin = @"
set -euxo pipefail

# redirect stderr to stdout.
exec 2>&1

# wait for cloud-init to finish.
cloud-init status --long --wait

# show information about the block devices.
lsblk -x KNAME -o KNAME,SIZE,TRAN,SUBSYSTEMS,FSTYPE,UUID,LABEL,MODEL,SERIAL
",
    });

And the suggestion is to have:

• CreateStdin
• UpdateStdin
• DeleteStdin

And their Stdout/Stderr counterparts.

Or, simplify the Command interface, and replace the Create/Update/Delete properties with a single Command, and just set an environment variable with the action being executed and let the command handle it internally?

Affected area/feature

[danielrbradley]

Hi @rgl thanks for the suggestion.

One additional option for the layout would be to make the Stdin property either a string or an object of:

{
  Create: string
  Update: string
  Delete: string
}

[iwahbe]

Hi @rgl thanks for the suggestion.

One additional option for the layout would be to make the Stdin property either a string or an object of:

{
  Create: string
  Update: string
  Delete: string
}

I'm hesitant to do something like this. It would be great in typescript, but I believe it would turn into an interface{} in go.