7050ff0802
Routes requests through CT130/131/132 proxy pool (192.168.178.77/76/74:1080) when PROXY_URLS env var is set. Uses ProxyConfiguration from crawlee for PlaywrightCrawler scrapers and socks-proxy-agent for fetch-based scrapers.
275 lines
10 KiB
TypeScript
275 lines
10 KiB
TypeScript
/**
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* GBICS.com Scraper — UK-based compatible transceiver vendor
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*
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* gbics.com — BigCommerce store, server-rendered HTML, GBP prices.
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* Products in <li> cards with <h3> product names, "Now: £XX.XX" pricing.
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* Pagination via ?page=N. Rate limited: 1 req/2sec.
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*/
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import { pool, findOrCreateScrapedTransceiver, ensureVendor, upsertPriceObservation } from "../utils/db";
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import { contentHash } from "../utils/hash";
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import { SocksProxyAgent } from "socks-proxy-agent";
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const BASE = "https://www.gbics.com";
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const HEADERS = {
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"User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36",
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Accept: "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",
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"Accept-Language": "en-US,en;q=0.9",
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};
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// SOCKS5 proxy pool — rotate across CT130/131/132 to avoid IP blocks
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const PROXY_URLS = (process.env["PROXY_URLS"] ?? "")
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.split(",")
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.map((u) => u.trim())
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.filter(Boolean);
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let proxyIndex = 0;
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function getNextProxyAgent(): SocksProxyAgent | undefined {
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if (PROXY_URLS.length === 0) return undefined;
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const url = PROXY_URLS[proxyIndex % PROXY_URLS.length];
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proxyIndex++;
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return new SocksProxyAgent(url);
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}
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const CATEGORIES = [
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{ path: "/800g-osfp/", formFactor: "OSFP", speed: "800G", speedGbps: 800 },
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{ path: "/400g-qsfp112/", formFactor: "QSFP112", speed: "400G", speedGbps: 400 },
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{ path: "/400g-qsfp-dd/", formFactor: "QSFP-DD", speed: "400G", speedGbps: 400 },
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{ path: "/400g-osfp/", formFactor: "OSFP", speed: "400G", speedGbps: 400 },
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{ path: "/200g-qsfp56/", formFactor: "QSFP56", speed: "200G", speedGbps: 200 },
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{ path: "/100g-qsfp28/", formFactor: "QSFP28", speed: "100G", speedGbps: 100 },
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{ path: "/40g-qsfp/", formFactor: "QSFP+", speed: "40G", speedGbps: 40 },
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{ path: "/25g-sfp28/", formFactor: "SFP28", speed: "25G", speedGbps: 25 },
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{ path: "/10g-sfp/", formFactor: "SFP+", speed: "10G", speedGbps: 10 },
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{ path: "/1g-sfp/", formFactor: "SFP", speed: "1G", speedGbps: 1 },
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];
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interface Product {
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partNumber: string;
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name: string;
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url: string;
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price?: number;
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formFactor: string;
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speed: string;
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speedGbps: number;
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reachLabel?: string;
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reachMeters?: number;
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fiberType?: string;
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wavelength?: string;
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compatibleWith?: string;
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}
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function sleep(ms: number): Promise<void> {
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return new Promise((resolve) => setTimeout(resolve, ms));
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}
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function detectReach(text: string): { label: string; meters: number } | undefined {
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const patterns: [RegExp, string, number][] = [
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[/\b120\s*km\b/i, "120km", 120000],
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[/\b80\s*km\b/i, "80km", 80000],
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[/\b40\s*km\b/i, "40km", 40000],
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[/\b20\s*km\b/i, "20km", 20000],
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[/\b10\s*km\b/i, "10km", 10000],
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[/\b2\s*km\b/i, "2km", 2000],
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[/\b550\s*m\b/i, "550m", 550],
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[/\b500\s*m\b/i, "500m", 500],
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[/\b400\s*m\b/i, "400m", 400],
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[/\b300\s*m\b/i, "300m", 300],
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[/\b150\s*m\b/i, "150m", 150],
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[/\b100\s*m\b/i, "100m", 100],
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[/\bLR4\b/, "10km", 10000],
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[/\bLR\b/, "10km", 10000],
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[/\bER4?\b/, "40km", 40000],
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[/\bZR4?\b/, "80km", 80000],
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[/\bSR4?\b/, "300m", 300],
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[/\bDR4?\b/, "500m", 500],
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[/\bFR4?\b/, "2km", 2000],
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];
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for (const [regex, label, meters] of patterns) {
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if (regex.test(text)) return { label, meters };
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}
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return undefined;
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}
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function detectFiber(text: string): string {
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if (/single.?mode|smf|[^a-z]lx[^a-z]|[^a-z]lr[^a-z]|[^a-z]er[^a-z]|[^a-z]zr[^a-z]|bidi|cwdm|dwdm/i.test(text)) return "SMF";
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if (/multi.?mode|mmf|[^a-z]sx[^a-z]|[^a-z]sr[^a-z]/i.test(text)) return "MMF";
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if (/copper|dac|twinax|rj.?45|base-t|cat[56x]/i.test(text)) return "Copper";
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return "";
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}
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function detectWavelength(text: string): string {
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const match = text.match(/(\d{3,4})\s*nm/i);
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if (match) return match[1];
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return "";
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}
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function extractCompatibleVendor(name: string): string {
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const match = name.match(/^(\w+(?:\s+\w+)?)\s+Compatible\b/i);
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return match ? match[1] : "";
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}
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function parseProductList(html: string, cat: typeof CATEGORIES[number]): Product[] {
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const products: Product[] = [];
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// Collapse whitespace for easier regex matching
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const collapsed = html.replace(/\s+/g, " ");
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// BigCommerce card-title pattern:
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// <a aria-label="Product Name, £XX.XX" href="URL" data-event-type="product-click">
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const productRegex = /aria-label="([^"]+)"\s+href="(https?:\/\/(?:www\.)?gbics\.com\/[^"]+)"[^>]*data-event-type="product-click"/gi;
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let match;
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while ((match = productRegex.exec(collapsed)) !== null) {
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const label = match[1].trim();
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const url = match[2];
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// aria-label contains "Product Name, £XX.XX"
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// Split on last comma to separate name and price
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const priceInLabel = label.match(/,\s*£\s*([\d,.]+)\s*$/);
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const name = priceInLabel ? label.slice(0, label.lastIndexOf(",")).trim() : label;
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let price = priceInLabel ? parseFloat(priceInLabel[1].replace(",", "")) : undefined;
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// Fallback: extract price from data-price-asc attribute on parent <li>
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if (!price) {
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const priceContext = collapsed.slice(Math.max(0, match.index - 500), match.index);
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const dataPriceMatch = priceContext.match(/data-price-asc="(\d+)"/);
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if (dataPriceMatch) price = parseFloat(dataPriceMatch[1]);
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}
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if (name.length < 10) continue;
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const reach = detectReach(name);
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const partParts = name.split(/\s+-\s+/);
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const partNumber = partParts[0]?.trim().slice(0, 80) || url.split("/").filter(Boolean).pop() || "";
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products.push({
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partNumber, name, url,
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price: price && price > 0 && price < 50000 ? price : undefined,
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formFactor: cat.formFactor, speed: cat.speed, speedGbps: cat.speedGbps,
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reachLabel: reach?.label, reachMeters: reach?.meters,
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fiberType: detectFiber(name), wavelength: detectWavelength(name),
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compatibleWith: extractCompatibleVendor(name),
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});
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}
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// Fallback: aria-label pattern
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if (products.length === 0) {
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const ariaRegex = /aria-label="([^"]+£[^"]+)"\s+href="(https?:\/\/(?:www\.)?gbics\.com\/[^"]+)"/gi;
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while ((match = ariaRegex.exec(collapsed)) !== null) {
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const label = match[1].trim();
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const url = match[2];
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const priceMatch = label.match(/£\s*([\d,.]+)/);
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const name = label.split(",")[0]?.trim() || label;
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const price = priceMatch ? parseFloat(priceMatch[1].replace(",", "")) : undefined;
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if (name.length < 10) continue;
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const reach = detectReach(name);
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products.push({
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partNumber: name.split(/\s+-\s+/)[0]?.trim().slice(0, 80) || "",
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name, url,
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price: price && price > 0 && price < 50000 ? price : undefined,
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formFactor: cat.formFactor, speed: cat.speed, speedGbps: cat.speedGbps,
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reachLabel: reach?.label, reachMeters: reach?.meters,
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fiberType: detectFiber(name), wavelength: detectWavelength(name),
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compatibleWith: extractCompatibleVendor(name),
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});
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}
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}
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// Fallback: try "Now: £XX.XX" pattern near product links
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if (products.length === 0) {
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const altRegex = /href="(https?:\/\/(?:www\.)?gbics\.com\/[^"]+)"[^>]*>\s*([^<]{15,})<\/a>/gi;
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while ((match = altRegex.exec(collapsed)) !== null) {
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const url = match[1];
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const name = match[2].trim();
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if (name.length < 10 || products.find((p) => p.url === url)) continue;
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if (!/transceiver|sfp|qsfp|xfp|osfp|base/i.test(name)) continue;
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const context = collapsed.slice(Math.max(0, match.index - 300), match.index + 600);
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const priceMatch = context.match(/Now:\s*£\s*([\d,.]+)/) || context.match(/£\s*([\d,.]+)/);
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const price = priceMatch ? parseFloat(priceMatch[1].replace(",", "")) : undefined;
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const reach = detectReach(name);
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products.push({
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partNumber: name.split(/\s+-\s+/)[0]?.trim().slice(0, 80) || "",
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name, url,
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price: price && price > 0 && price < 50000 ? price : undefined,
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formFactor: cat.formFactor, speed: cat.speed, speedGbps: cat.speedGbps,
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reachLabel: reach?.label, reachMeters: reach?.meters,
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fiberType: detectFiber(name), wavelength: detectWavelength(name),
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compatibleWith: extractCompatibleVendor(name),
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});
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}
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}
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const seen = new Set<string>();
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return products.filter((p) => {
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if (seen.has(p.url)) return false;
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seen.add(p.url);
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return true;
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});
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}
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async function fetchPage(url: string): Promise<string> {
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const agent = getNextProxyAgent();
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const opts: RequestInit = { headers: HEADERS, signal: AbortSignal.timeout(30000) };
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if (agent) (opts as Record<string, unknown>)["dispatcher"] = agent;
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const resp = await fetch(url, opts);
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if (!resp.ok) throw new Error(`HTTP ${resp.status} for ${url}`);
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return resp.text();
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}
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export async function scrapeGbics(): Promise<void> {
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console.log("=== GBICS.com Scraper Starting ===\n");
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const vendorId = await ensureVendor("GBICS", "compatible", "https://www.gbics.com", "https://www.gbics.com/optical-transceivers/");
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let totalProducts = 0;
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let priceUpdates = 0;
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for (const cat of CATEGORIES) {
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console.log(`\n--- ${cat.formFactor} (${cat.speed}) [${cat.path}] ---`);
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try {
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const html = await fetchPage(BASE + cat.path);
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const catProducts = parseProductList(html, cat);
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console.log(` Found ${catProducts.length} products`);
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for (const product of catProducts) {
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try {
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const txId = await findOrCreateScrapedTransceiver({
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partNumber: product.partNumber, vendorId,
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formFactor: product.formFactor, speedGbps: product.speedGbps,
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speed: product.speed, reachMeters: product.reachMeters,
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reachLabel: product.reachLabel, fiberType: product.fiberType,
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wavelengths: product.wavelength, category: "DataCenter",
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});
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if (product.price && product.price > 0) {
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const hash = contentHash(JSON.stringify({ price: product.price, part: product.partNumber }));
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const updated = await upsertPriceObservation({
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transceiverId: txId, sourceVendorId: vendorId,
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price: product.price, currency: "GBP",
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stockLevel: "in_stock", url: product.url, contentHash: hash,
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});
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if (updated) priceUpdates++;
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}
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totalProducts++;
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} catch (err) {
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console.warn(` Error: ${(err as Error).message.slice(0, 80)}`);
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}
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}
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} catch (err) {
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console.error(` Category failed: ${(err as Error).message}`);
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}
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await sleep(2000);
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}
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console.log(`\n=== GBICS Complete: ${totalProducts} products, ${priceUpdates} prices ===`);
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}
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if (require.main === module) {
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scrapeGbics()
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.then(() => pool.end())
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.catch((err) => { console.error("Fatal:", err); pool.end(); process.exit(1); });
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}
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