| 1 | import { readFileSync } from "node:fs"; |
| 2 | import { fileURLToPath } from "node:url"; |
| 3 | |
| 4 | import type { DataPoint } from "../src/datapoint"; |
| 5 | import type { Env } from "../src/index"; |
| 6 | import { INGEST_PATH } from "../src/route"; |
| 7 | |
| 8 | /** `docs/TELEMETRY.md` — the published schema, and the thing we must match. */ |
| 9 | export const DOC = readFileSync( |
| 10 | new URL("../../docs/TELEMETRY.md", import.meta.url), |
| 11 | "utf8", |
| 12 | ); |
| 13 | |
| 14 | /** |
| 15 | * `crates/telemetry/tests/golden/v1.json` — the client's own pinned v1 wire |
| 16 | * form. Reading the real file rather than a hand-written fixture is the point: |
| 17 | * the Rust suite already welds this file to the doc and to the serializer, so |
| 18 | * an endpoint that accepts it byte for byte is welded to both by transitivity. |
| 19 | */ |
| 20 | export const GOLDEN_PATH = fileURLToPath( |
| 21 | new URL("../../crates/telemetry/tests/golden/v1.json", import.meta.url), |
| 22 | ); |
| 23 | |
| 24 | export const GOLDEN_TEXT = readFileSync(GOLDEN_PATH, "utf8"); |
| 25 | |
| 26 | /** A fresh deep copy of the golden batch. */ |
| 27 | export function goldenBatch(): Record<string, unknown> { |
| 28 | return JSON.parse(GOLDEN_TEXT) as Record<string, unknown>; |
| 29 | } |
| 30 | |
| 31 | export interface Harness { |
| 32 | env: Env; |
| 33 | written: DataPoint[]; |
| 34 | limited: string[]; |
| 35 | } |
| 36 | |
| 37 | /** An `Env` whose bindings record instead of calling Cloudflare. */ |
| 38 | export function harness(options: { rateLimit?: boolean } = {}): Harness { |
| 39 | const written: DataPoint[] = []; |
| 40 | const limited: string[] = []; |
| 41 | const env: Env = { |
| 42 | TELEMETRY: { |
| 43 | writeDataPoint(point) { |
| 44 | written.push({ |
| 45 | indexes: point.indexes ?? [], |
| 46 | blobs: point.blobs ?? [], |
| 47 | doubles: point.doubles ?? [], |
| 48 | }); |
| 49 | }, |
| 50 | }, |
| 51 | }; |
| 52 | if (options.rateLimit !== undefined) { |
| 53 | env.RATE_LIMITER = { |
| 54 | async limit({ key }) { |
| 55 | limited.push(key); |
| 56 | return { success: options.rateLimit === true }; |
| 57 | }, |
| 58 | }; |
| 59 | } |
| 60 | return { env, written, limited }; |
| 61 | } |
| 62 | |
| 63 | const ORIGIN = "https://telemetry.invalid"; |
| 64 | |
| 65 | /** A POST shaped the way `crates/telemetry/src/client.rs` shapes it. */ |
| 66 | export function post( |
| 67 | body: BodyInit, |
| 68 | init: { path?: string; contentType?: string | null } = {}, |
| 69 | ): Request { |
| 70 | const headers = new Headers(); |
| 71 | if (init.contentType !== null) { |
| 72 | headers.set("content-type", init.contentType ?? "application/json"); |
| 73 | } |
| 74 | return new Request(`${ORIGIN}${init.path ?? INGEST_PATH}`, { |
| 75 | method: "POST", |
| 76 | headers, |
| 77 | body, |
| 78 | }); |
| 79 | } |
| 80 | |
| 81 | /** A POST of a JSON value. */ |
| 82 | export function postJson(value: unknown): Request { |
| 83 | return post(JSON.stringify(value)); |
| 84 | } |
| 85 |