Redeploy parent on update

[cowwoc]

Hello!

• Vote on this issue by adding a 👍 reaction
• If you want to implement this feature, comment to let us know (we'll work with you on design, scheduling, etc.)

Issue details

Is there any way to instruct pulumi to redeploy (delete and then recreate) the parent resource if a script that was run on it has changed?

It's a bit of a catch-22 in the sense that the script depends on the container, but then the container depends on the script.

[mjeffryes]

There might be an easier way to do this, but the idea that jumps to my mind is to wrap both the container and the command resource in a component (https://www.pulumi.com/docs/iac/concepts/resources/components/) and then use replaceOnChanges (https://www.pulumi.com/docs/iac/concepts/options/replaceonchanges/) on the component to replace whenever the script changes.

Something like:

type MyComponentArgs {
  script: string;
}

class MyComponent extends pulumi.ComponentResource {
    constructor(name: string, myComponentArgs: MyComponentArgs, opts: pulumi.ComponentResourceOptions) {
        super("pkg:index:MyComponent", name, {}, opts);
        # EC2 instance configuration
        let server = ec2.Instance(
            SERVER_NAME,
            instance_type=AWS_INSTANCE_TYPE,
            ami=ec2.get_ami(
                most_recent=True,
                owners=["amazon"],
                filters=[{"name": "name", "values": ["*ubuntu-latest-*"]}],
            ).id,
            key_name=ec2.get_key_pair(key_name=AWS_KEY_NAME).key_name,
            vpc_security_group_ids=AWS_SECURITY_GROUPS,
            subnet_id=AWS_SUBNET,
             opts=pulumi.ResourceOptions(parent=this),
        )

        # Set up remote connection for commands
        lett ssh_connection = command.remote.ConnectionArgs(
            host=server.public_ip,
            user=SERVER_USER,
            private_key=AWS_PEM_KEY,
            opts=pulumi.ResourceOptions(parent=this),
        )

        # Install Docker on the remote EC2 instance
        lett command = command.remote.Command(
            "run script",
            connection=ssh_connection,
            create="sh -c ${myComponentArgs.script}",
            opts=pulumi.ResourceOptions(parent=this),
        )

    }
}

const ecsServerWithScript = new MyComponent("myContainer", {
  script: "echo 'hello world'"
  }, 
  opts=pulumi.ResourceOptions(replaceOnChanges=["script"]),
}