File size: 2,920 Bytes
9c28998 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 | // SPDX-License-Identifier: Apache-2.0
// Author: Lutar, Stephen P. | ORCID 0009-0001-0110-4173 | SZL Holdings
// Module: vsp-otel HTTP verifier server
// Doctrine V6 preflight: ✓
import http from "node:http";
import { exportSpans, signSpan, type OtelSpan } from "./exporter.js";
import { getReceipt, verifyReceipt } from "@szl/ouroboros-lambda-gate";
function readBody(req: http.IncomingMessage): Promise<unknown> {
return new Promise((resolve, reject) => {
let buf = "";
req.on("data", (c: Buffer) => { buf += c.toString(); });
req.on("end", () => { try { resolve(JSON.parse(buf)); } catch (e) { reject(e); } });
req.on("error", reject);
});
}
function send(res: http.ServerResponse, status: number, body: unknown): void {
const json = JSON.stringify(body);
res.writeHead(status, { "Content-Type": "application/json", "Content-Length": Buffer.byteLength(json) });
res.end(json);
}
export function createVspServer(): http.Server {
return http.createServer(async (req, res) => {
const url = req.url ?? "/";
const method = req.method?.toUpperCase() ?? "GET";
try {
// POST /spans/verify — accept span(s), sign and return {lambda, axes, pass}
if (method === "POST" && url === "/spans/verify") {
const body = await readBody(req);
const spans: OtelSpan[] = Array.isArray(body) ? body : [body as OtelSpan];
const result = exportSpans(spans);
const response = result.signed.map((s) => ({
spanId: s.span.spanId,
lambda: s.lambda,
axes: s.axes,
pass: s.pass,
receiptHash: s.receiptHash,
}));
send(res, 200, response.length === 1 ? response[0] : response);
return;
}
// POST /spans/export — batch export without verification response
if (method === "POST" && url === "/spans/export") {
const body = await readBody(req);
const spans: OtelSpan[] = Array.isArray(body) ? body : [body as OtelSpan];
const result = exportSpans(spans);
send(res, 200, { total: result.total, passed: result.passed, failed: result.failed });
return;
}
// GET /spans/:hash — retrieve stored receipt for a span
const hashMatch = url.match(/^\/spans\/([0-9a-f]{64})$/);
if (method === "GET" && hashMatch) {
const r = getReceipt(hashMatch[1]);
if (!r) { send(res, 404, { error: "receipt not found" }); return; }
send(res, 200, r);
return;
}
send(res, 404, { error: "not found" });
} catch (err) {
send(res, 400, { error: err instanceof Error ? err.message : String(err) });
}
});
}
if (process.argv[1]?.endsWith("server.js") || process.argv[1]?.endsWith("server.ts")) {
const port = Number(process.env["VSP_PORT"] ?? 3004);
createVspServer().listen(port, () => console.log(`vsp-otel listening :${port}`));
}
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