pulumi-community #general

stocky-spoon-28903

06/20/2018, 6:26 PM

Right, that part does

microscopic-florist-22719

06/20/2018, 6:26 PM

Or you can wrap the entire bit in an async lambda (though this is frowned upon for reasons @white-balloon-205 can elaborate)

big-soccer-75859

06/20/2018, 6:26 PM

Follow up question, I noticed that the function signature for

endpoint.get

takes multiple functions, how does that work, do they all run in parallel or something? https://github.com/pulumi/pulumi-cloud/blob/082b33b1a40c62e87df87dffd345ffe9c3874105/aws/api.ts#L101

microscopic-florist-22719

06/20/2018, 6:27 PM

Copy code

(async () => {
    let azs = await aws.getAvailabilityZones();
})();

stocky-spoon-28903

06/20/2018, 6:28 PM

👍

stocky-spoon-28903

06/20/2018, 6:28 PM

This also does what I would expect:

stocky-spoon-28903

06/20/2018, 6:28 PM

Copy code

const privateSubnets = cidrs.map(async (cidrBlock, index) => {
    return new aws.ec2.Subnet(`${baseName}-subnet-${index + 1}`, {
        vpcId: vpc.id,
        cidrBlock: cidrBlock,
        availabilityZone: (await azs).names[index],
        tags: tags,
    });
});

stocky-spoon-28903

06/20/2018, 6:28 PM

assuming

azs = aws.getAvailabilityZones()

lemon-spoon-91807

06/20/2018, 6:31 PM

@big-soccer-75859> do they all run in parallel or something?

lemon-spoon-91807

06/20/2018, 6:32 PM

They're intended to run serially. Each handler gets a chance, in turn to work with the request/response

microscopic-pilot-97530

06/20/2018, 6:33 PM

They're like middleware

microscopic-pilot-97530

06/20/2018, 6:33 PM

See https://github.com/pulumi/pulumi-cloud/blob/master/api/api.ts#L111-L118

lemon-spoon-91807

06/20/2018, 6:33 PM

they can choose to, if htey want, call the "next" parameter to pass control to the next handler in the chain.

big-soccer-75859

06/20/2018, 6:33 PM

oh nice. Any documentation on how that works?

lemon-spoon-91807

06/20/2018, 6:34 PM

Good question 🙂

lemon-spoon-91807

06/20/2018, 6:34 PM

Actually, @microscopic-pilot-97530 just linked to what i was going to link to

big-soccer-75859

06/20/2018, 6:34 PM

Oh I didn't even see that (going blind)

lemon-spoon-91807

06/20/2018, 6:35 PM

As with most projects, our docs could always use some TLC 🙂

big-soccer-75859

06/20/2018, 6:35 PM

that's ok, still 100 times better than serverless framework when they started

👍 1

lemon-spoon-91807

06/20/2018, 6:35 PM

i'll take that!

big-soccer-75859

06/20/2018, 6:35 PM

It took them a good couple of years to get their docs up to scratch

big-soccer-75859

06/20/2018, 6:35 PM

haha

big-soccer-75859

06/20/2018, 6:36 PM

not to mention most of the actual useful functionality was in third party plugins

big-soccer-75859

06/20/2018, 6:36 PM

which had like not a lot of docs

helpful-forest-30196

06/20/2018, 6:38 PM

How are different languages supported? Do you have a Protocol Buffer API implemented in Go and consumed in the different languages?

bitter-oil-46081

06/20/2018, 6:40 PM

@helpful-forest-30196 Yes. The languages run out of process and communicate over gRPC with the engine and resource providers. See https://github.com/pulumi/pulumi/tree/master/sdk/proto for our protocol definitions, as well as the language providers themselves (I believe the go one is the most approachable if you're just trying to grok the system at a high level)

blue-answer-29496

06/20/2018, 6:42 PM

It seems like the ability to create NPM packages that make things sharable and re-usable is extremely powerful, but the fact that you are supporting many programming languages seems like it will fragment the community. Say for instance if I were to make some code that made it really easy to deploy an Elasticsearch cluster in JS and deploy it as an NPM package. Anyone that wanted to use something other than JS like maybe Python wouldn’t be able to use that package. Any thoughts on this topic?

stocky-spoon-28903

06/20/2018, 6:42 PM

Is there perhaps some kind of “stack reference” resource that would allow you to mix and match these?

helpful-forest-30196

06/20/2018, 6:43 PM

Thanks @bitter-oil-46081

👍 1

blue-answer-29496

06/20/2018, 6:43 PM

Maybe since this all just executes and builds a desired object model up that is shared across languages… maybe they could make it so that these stacks can be called across languages with parameters.