agentcrumbs/dist/browser/collector/server.js

Debug mode for any agent.

import http from "node:http";
import fs from "node:fs";
import { EventEmitter } from "node:events";
import { CrumbStore } from "./store.js";
const SESSION_FILE = "/tmp/agentcrumbs.session";
export class CollectorServer extends EventEmitter {
    server;
    stores = new Map();
    baseDir;
    port;
    constructor(port, storeDir) {
        super();
        this.port = port;
        this.baseDir = storeDir;
    }
    getStoreForApp(app) {
        let store = this.stores.get(app);
        if (!store) {
            store = CrumbStore.forApp(app, this.baseDir);
            this.stores.set(app, store);
        }
        return store;
    }
    start() {
        return new Promise((resolve, reject) => {
            this.server = http.createServer((req, res) => {
                res.setHeader("Access-Control-Allow-Origin", "*");
                res.setHeader("Access-Control-Allow-Methods", "GET, POST, OPTIONS");
                res.setHeader("Access-Control-Allow-Headers", "Content-Type");
                if (req.method === "OPTIONS") {
                    res.writeHead(204);
                    res.end();
                    return;
                }
                if (req.url === "/health" && req.method === "GET") {
                    const apps = CrumbStore.listApps(this.baseDir);
                    res.writeHead(200, { "Content-Type": "application/json" });
                    res.end(JSON.stringify({
                        status: "ok",
                        port: this.port,
                        apps,
                        session: this.getActiveSession() ?? null,
                    }));
                    return;
                }
                if (req.url === "/crumb" && req.method === "POST") {
                    let body = "";
                    req.on("data", (chunk) => {
                        body += chunk.toString();
                    });
                    req.on("end", () => {
                        try {
                            const crumb = JSON.parse(body);
                            const app = crumb.app || "unknown";
                            const store = this.getStoreForApp(app);
                            store.appendRaw(body);
                            this.emit("crumb", crumb);
                            res.writeHead(200);
                            res.end("ok");
                        }
                        catch {
                            res.writeHead(400);
                            res.end("bad json");
                        }
                    });
                    return;
                }
                res.writeHead(404);
                res.end();
            });
            this.server.on("error", (err) => {
                this.emit("error", err);
                reject(err);
            });
            this.server.listen(this.port, () => {
                resolve();
            });
        });
    }
    stop() {
        if (this.server) {
            this.server.close();
            this.server = undefined;
        }
        for (const store of this.stores.values()) {
            store.close();
        }
        this.stores.clear();
    }
    getPort() {
        return this.port;
    }
    startSession(id) {
        fs.writeFileSync(SESSION_FILE, id);
    }
    stopSession() {
        try {
            const id = fs.readFileSync(SESSION_FILE, "utf-8").trim();
            fs.unlinkSync(SESSION_FILE);
            return id || undefined;
        }
        catch {
            return undefined;
        }
    }
    getActiveSession() {
        try {
            const id = fs.readFileSync(SESSION_FILE, "utf-8").trim();
            return id || undefined;
        }
        catch {
            return undefined;
        }
    }
}
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