Fastly Compute@Edge Quickstart for Swift
This is an example Fastly Compute@Edge app using Andrew Barba's Swift Compute Runtime SDK.
It's designed to demonistrate some simple functionality:
- Routing
- Accessing request object (method, url, headers)
- Writing repsponse (JSON and text)
- Setting response status (200 vs. 404)
See the SDK Reference for more info.
Synopsis
The following is the code for this demo.
import Compute
struct Response: Codable {
let version: Int
let message: String
}
@main
struct ComputeApp {
static func main() async throws {
try await onIncomingRequest { req, res in
let logger = try Logger(name: "QuickstartLog")
switch (req.method, req.url.path) {
case (.post, "/quickstart"):
if let accept = req.headers.get("Accept") {
if accept.caseInsensitiveCompare("text/plain") == .orderedSame {
try logger.write("swift quickstart responded with 200")
try await res.status(200).send("Hello, Swift World!")
return
}
}
let content = Response(version: 1, message: "Hello, Swift World!")
try logger.write("swift quickstart responded with 200")
try await res.status(200).send(content)
default:
try logger.write("swift quickstart responded with 404")
try await res.status(404).send()
}
}
}
}
Prerequisites
Usage
$ fastly compute init
$ /Library/Developer/Toolchains/swift-wasm-5.6.0-RELEASE.xctoolchain/usr/bin/swift build --triple wasm32-unknown-wasi --product FastlyComputeQuickstart -c release
$ fastly compute pack --wasm-binary=./.build/release/FastlyComputeQuickstart.wasm
$ fastly compute deploy
110 Oct 18, 2022
288 Oct 9, 2022
349 Dec 20, 2022
90 Sep 1, 2022
83 Jan 29, 2022
7.6k Jan 6, 2023
19.1k Jan 2, 2023
119 Jan 29, 2022
28 Aug 18, 2022
0 Nov 19, 2021
0 Jan 24, 2022
1 Feb 5, 2022
144 Jun 29, 2022
608 Sep 15, 2022
1.7k Dec 30, 2022
4.6k Dec 26, 2022
1.3k Jan 5, 2023
7.3k Jan 4, 2023