@fastly/as-compute

as-compute

Experimental AssemblyScript SDK for building Compute@Edge applications with AssemblyScript.

Installation

@fastly/as-compute is available as a npm package. You can install @fastly/as-compute in your AssemblyScript project by running:

npm install --save @fastly/as-compute

Quick Start

NOTE: Usage with the Fastly CLI will be coming soon!

Let's take a quick look at an example that:

• makes a request to the origin server
• creates a new response that modifies the origin response

// Import the exposed `@fastly/as-fetch`'s Fetch API classes,
// and `Fastly` to interact with Fastly's Compute@Edge.
import { Request, Response, Headers, Fastly } from "@fastly/as-compute";

// Create some headers for our upstream request to our origin.
let upstreamHeaders = new Headers();
upstreamHeaders.set("UpstreamHeader", "UpstreamValue");

// Create our upstream request to our origin using our upstream headers.
let upstreamRequest = new Request("http://provider.org/TheURL", {
  method: "GET",
  headers: upstreamHeaders,
});

// Send the upstream request with `Fastly.fetch` and wait to get our response.
let upstreamResponse = Fastly.fetch(upstreamRequest, {
  backend: "TheOrigin",
}).wait();

// Create some headers for the downstream response that we will be sending back to our client.
let downstreamHeaders = new Headers();
downstreamHeaders.set("DownstreamHeader", "DownstreamValue");

// Create the downstream response with our new headers, but pass along the upstream response body.
let downstreamResponse = new Response(upstreamRequest.arrayBuffer(), {
  headers: downstreamHeaders,
});

// Send the downstream response back down to the client! :)
Fastly.respondWith(downstreamResponse);

Examples

NOTE: Coming soon to the Fastly Developer Hub!

API Reference

The API reference documentation can be found in the docs/ directory.

Security

If you find any security issues, see the Fastly Security Reporting Page or send an email to: [e-mail]

We plan to disclose any found security vulnerabilities per the npm vulnerability reporting guidelines. Note that communications related to security issues in Fastly-maintained OSS as described here are distinct from Fastly security advisories.

License

Apache-2.0 WITH LLVM-exception