xyz Pulumi Component Provider (TypeScript)

This repo is a boilerplate showing how to create a Pulumi component provider written in TypeScript. You can search-replace xyz with the name of your desired provider as a starting point for creating a component provider for your component resources.

An example StaticPage component resource is available in provider/cmd/pulumi-resource-xyz/staticPage.ts. This component creates a static web page hosted in an AWS S3 Bucket. There is nothing special about StaticPage -- it is a typical component resource written in TypeScript.

The component provider makes component resources available to other languages. The implementation is in provider/cmd/pulumi-resource-xyz/provider.ts. Each component resource in the provider must have an implementation in the construct method to create an instance of the requested component resource and return its URN and state (outputs). There is an initial implementation that demonstrates an implementation of construct for the example StaticPage component.

A code generator is available which generates SDKs in TypeScript, Python, Go and .NET which are also checked in to the sdk folder. The SDKs are generated from a schema in schema.json. This file should be kept aligned with the component resources supported by the component provider implementation.

An example of using the StaticPage component in TypeScript is in examples/simple.

Note that the provider plugin (pulumi-resource-xyz) must be on your PATH to be used by Pulumi deployments. In this case, pulumi-resource-xyz is a platform-specific binary that includes its Node.js dependency along with the provider code, created using nexe. By default, running make install will create the binary specific to your host environment, but you can override the binary target by passing in make install target=<targe-string> where target-string is a valid nexe target.

After running make install, pulumi-resource-xyz will be available in the ./bin directory. You can add this to your path in bash with export PATH=$PATH:$PWD/bin.

If creating a provider for distribution to other users, they will need pulumi-resource-xyz directory on their PATH. See the Packaging section below for more on distributing the provider to users.

Prerequisites

• Pulumi CLI
• Node.js
• Yarn
• Go 1.17 (to regenerate the SDKs)
• Python 3.6+ (to build the Python SDK)
• .NET Core SDK (to build the .NET SDK)

Build and Test

# Build and install the provider
make install_provider

# Regenerate SDKs
make generate

# Ensure the pulumi-provider-xyz script is on PATH
$ export PATH=$PATH:$PWD/bin

# Test Node.js SDK
$ make install_nodejs_sdk
$ cd examples/simple
$ yarn install
$ yarn link @pulumi/xyz
$ pulumi stack init test
$ pulumi config set aws:region us-east-1
$ pulumi up

Naming

The xyz provider's plugin must be named pulumi-resource-xyz (in the format pulumi-resource-<provider>).

While the provider plugin must follow this naming convention, the SDK package naming can be customized. TODO explain.

Packaging

The provider plugin can be packaged into a tarball and hosted at a custom server URL to make it easier to distribute to users.

Currently, three tarball files are necessary for Linux, macOS, and Windows (pulumi-resource-xyz-v0.0.1-linux-amd64.tar.gz, pulumi-resource-xyz-v0.0.1-darwin-amd64.tar.gz, pulumi-resource-xyz-v0.0.1-windows-amd64.tar.gz) each containing the same file: the platform-specific binary pulumi-resource-xyz created in the ./bin directory after running make install_provider. These artifacts can be generated automatically in the dist directory using make dist.

TODO explain custom server hosting in more detail.

Example component

Let's look at the example StaticPage component resource in more detail.

Schema

The example StaticPage component resource is defined in schema.json:

"resources": {
    "xyz:index:StaticPage": {
        "isComponent": true,
        "inputProperties": {
            "indexContent": {
                "type": "string",
                "description": "The HTML content for index.html."
            }
        },
        "requiredInputs": [
            "indexContent"
        ],
        "properties": {
            "bucket": {
                "$ref": "/aws/v3.30.0/schema.json#/resources/aws:s3%2Fbucket:Bucket",
                "description": "The bucket resource."
            },
            "websiteUrl": {
                "type": "string",
                "description": "The website URL."
            }
        },
        "required": [
            "bucket",
            "websiteUrl"
        ]
    }
}

The component resource's type token is xyz:index:StaticPage in the format of <package>:<module>:<type>. In this case, it's in the xyz package and index module. This is the same type token passed inside the implementation of StaticPage in provider/cmd/pulumi-resource-xyz/staticPage.ts, and also the same token referenced in construct in provider/cmd/pulumi-resource-xyz/provider.ts.

This component has a required indexContent input property typed as string, and two required output properties: bucket and websiteUrl. Note that bucket is typed as the aws:s3/bucket:Bucket resource from the aws provider (in the schema the / is escaped as %2F).

Since this component returns a type from the aws provider, each SDK must reference the associated Pulumi aws SDK for the language. For the .NET, Node.js, and Python SDKs, dependencies are specified in the language section of the schema:

"language": {
    "csharp": {
        "packageReferences": {
            "Pulumi": "2.*",
            "Pulumi.Aws": "3.*"
        }
    },
    "nodejs": {
        "dependencies": {
            "@pulumi/aws": "^3.30.0"
        },
        "devDependencies": {
            "typescript": "^3.7.0"
        }
    },
    "python": {
        "requires": {
            "pulumi": ">=2.21.2,<3.0.0",
            "pulumi-aws": ">=3.30.0,<4.0.0"
        }
    }
}

For the Go SDK, dependencies are specified in the sdk/go.mod file.

Implementation

The implementation of this component is in provider/cmd/pulumi-resource-xyz/staticPage.ts and the structure of the component's inputs and outputs aligns with what is defined in schema.json:

export interface StaticPageArgs {
    indexContent: pulumi.Input<string>;
}

export class StaticPage extends pulumi.ComponentResource {
    public readonly bucket: aws.s3.Bucket;
    public readonly websiteUrl: pulumi.Output<string>;

    constructor(name: string, args: StaticPageArgs, opts?: pulumi.ComponentResourceOptions) {
        super("xyz:index:StaticPage", name, args, opts);

        ...
    }
}

The provider makes this component resource available in the construct method in provider/cmd/pulumi-resource-xyz/provider.ts. When construct is called and the type argument is xyz:index:StaticPage, we create an instance of the StaticPage component resource and return its URN and outputs as its state.

async function constructStaticPage(name: string, inputs: pulumi.Inputs,
    options: pulumi.ComponentResourceOptions): Promise<provider.ConstructResult> {

    // Create the component resource.
    const staticPage = new StaticPage(name, inputs as StaticPageArgs, options);

    // Return the component resource's URN and outputs as its state.
    return {
        urn: staticPage.urn,
        state: {
            bucket: staticPage.bucket,
            websiteUrl: staticPage.websiteUrl,
        },
    };
}