feat: fs.com scraper Phase 2 — crawl product detail pages for verified specs
- New spec-updater utility: parseSpecTable() + updateVerifiedSpecs() - fs.com scraper now has 2 phases: Phase 1: Category pages → prices + stock (existing) Phase 2: Product detail pages → fiber_type, connector, wavelength, power, image, datasheet - Updates data_confidence from 'enriched_estimated' to 'scraped_unverified' - Processes up to 200 product pages per scraper run
This commit is contained in:
Rene Fichtmueller
parent
98a7e12282
commit
1daf54e68e
@ -9,6 +9,7 @@
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import { PlaywrightCrawler } from "crawlee";
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import { PlaywrightCrawler } from "crawlee";
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import { ensureVendor, upsertPriceObservation, findOrCreateScrapedTransceiver, pool } from "../utils/db";
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import { ensureVendor, upsertPriceObservation, findOrCreateScrapedTransceiver, pool } from "../utils/db";
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import { contentHash, parsePrice, parseStockLevel, parseQuantity } from "../utils/hash";
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import { contentHash, parsePrice, parseStockLevel, parseQuantity } from "../utils/hash";
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import { updateVerifiedSpecs, parseSpecTable } from "../utils/spec-updater";
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const BASE_URL = "https://www.fs.com";
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const BASE_URL = "https://www.fs.com";
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@ -270,6 +271,141 @@ export async function scrapeFs(): Promise<void> {
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}
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}
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console.log(`\nDatabase: ${written} new, ${skipped} unchanged (${uniqueProducts.size} unique)`);
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console.log(`\nDatabase: ${written} new, ${skipped} unchanged (${uniqueProducts.size} unique)`);
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// ═══ PHASE 2: Crawl product detail pages for VERIFIED specs ═══
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console.log("\n=== Phase 2: Scraping product detail pages for verified specs ===");
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// Get products that need spec verification (enriched_estimated or missing key fields)
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const needsSpecs = await pool.query(
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`SELECT t.id, t.part_number, t.slug FROM transceivers t
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JOIN vendors v ON t.vendor_id = v.id
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WHERE v.slug = 'fs-com'
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AND (t.data_confidence = 'enriched_estimated' OR t.data_confidence = 'unknown'
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OR t.connector IS NULL OR t.connector = '' OR t.connector = '-'
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OR t.wavelengths IS NULL OR t.wavelengths = ''
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OR t.fiber_type IS NULL OR t.fiber_type = '')
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LIMIT 200`
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);
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console.log(`Products needing spec verification: ${needsSpecs.rows.length}`);
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// Build a map of product URLs from our scraped data
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const productUrls = new Map<string, string>(); // transceiver_id → product URL
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for (const p of uniqueProducts.values()) {
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// Find the transceiver in DB by part number
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const match = await pool.query(
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`SELECT id FROM transceivers WHERE part_number = $1 AND vendor_id = $2`,
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[p.partNumber, vendorId]
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).catch(() => ({ rows: [] }));
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if (match.rows[0] && p.url) {
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productUrls.set(match.rows[0].id, p.url);
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}
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}
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let specsUpdated = 0;
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const specCrawler = new PlaywrightCrawler({
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maxConcurrency: 1,
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maxRequestsPerMinute: 10,
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requestHandlerTimeoutSecs: 45,
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headless: true,
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launchContext: {
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launchOptions: {
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args: ["--disable-blink-features=AutomationControlled", "--lang=en-US"],
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},
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},
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preNavigationHooks: [
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async ({ page }) => {
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await page.context().addCookies([
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{ name: "currency", value: "USD", domain: ".fs.com", path: "/" },
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{ name: "lang", value: "en", domain: ".fs.com", path: "/" },
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]);
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},
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],
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async requestHandler({ page, request, log }) {
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const transceiverId = request.userData?.transceiverId;
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if (!transceiverId) return;
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log.info(`Spec scrape: ${request.url}`);
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await page.waitForTimeout(3000);
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// Extract spec table from product detail page
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const specData = await page.evaluate(() => {
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const specs: Record<string, string> = {};
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// fs.com uses various spec table formats
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const rows = document.querySelectorAll(
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".product-param tr, .product-specs tr, table.param-table tr, " +
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".specifications tr, .detail-param tr, .prod-spec-list tr, " +
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'[class*="specification"] tr, [class*="param"] tr'
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);
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for (const row of rows) {
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const cells = row.querySelectorAll("td, th");
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if (cells.length >= 2) {
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const key = (cells[0]?.textContent || "").trim();
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const val = (cells[1]?.textContent || "").trim();
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if (key && val && key.length < 100) specs[key] = val;
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}
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}
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// Also try dl/dt/dd pattern
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const dts = document.querySelectorAll("dt, .spec-label, .param-label");
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for (const dt of dts) {
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const dd = dt.nextElementSibling;
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if (dd && (dd.tagName === "DD" || dd.classList.contains("spec-value") || dd.classList.contains("param-value"))) {
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const key = (dt.textContent || "").trim();
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const val = (dd.textContent || "").trim();
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if (key && val) specs[key] = val;
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}
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}
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// Extract image
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const img = document.querySelector('.product-image img, .prod-img img, [class*="gallery"] img, .product-detail img');
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const imageUrl = img?.getAttribute("src") || "";
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// Extract datasheet link
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const dsLink = document.querySelector('a[href*="datasheet"], a[href*=".pdf"]');
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const datasheetUrl = dsLink?.getAttribute("href") || "";
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return { specs, imageUrl, datasheetUrl };
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});
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if (Object.keys(specData.specs).length > 0) {
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const parsed = parseSpecTable(specData.specs);
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const updated = await updateVerifiedSpecs({
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transceiverId,
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fiberType: parsed.fiberType,
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connector: parsed.connector,
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wavelengths: parsed.wavelengths,
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reachMeters: parsed.reachMeters,
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reachLabel: parsed.reachLabel,
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powerConsumptionW: parsed.powerConsumptionW,
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tempRange: parsed.tempRange,
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modulation: parsed.modulation,
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domSupport: parsed.domSupport,
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imageUrl: specData.imageUrl ? (specData.imageUrl.startsWith("http") ? specData.imageUrl : `${BASE_URL}${specData.imageUrl}`) : undefined,
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datasheetUrl: specData.datasheetUrl ? (specData.datasheetUrl.startsWith("http") ? specData.datasheetUrl : `${BASE_URL}${specData.datasheetUrl}`) : undefined,
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source: "fs.com",
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});
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if (updated) specsUpdated++;
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}
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},
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});
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// Build spec crawl requests (limit to 200 per run to avoid rate limiting)
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const specRequests = needsSpecs.rows
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.filter(r => productUrls.has(r.id))
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.slice(0, 200)
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.map(r => ({
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url: productUrls.get(r.id)!,
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userData: { transceiverId: r.id },
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}));
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if (specRequests.length > 0) {
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console.log(`Crawling ${specRequests.length} product detail pages for specs...`);
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await specCrawler.run(specRequests);
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console.log(`Specs verified: ${specsUpdated} products updated`);
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} else {
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console.log("No product URLs available for spec verification this run");
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}
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console.log("=== FS.com Scraper Complete ===\n");
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console.log("=== FS.com Scraper Complete ===\n");
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}
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}
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186
packages/scraper/src/utils/spec-updater.ts
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186
packages/scraper/src/utils/spec-updater.ts
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@ -0,0 +1,186 @@
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/**
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* Update transceiver specs with verified data from vendor product pages.
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* Only updates fields that are currently empty/estimated, preserving vendor-verified data.
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* Marks updated products as 'scraped_unverified' (higher confidence than 'enriched_estimated').
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*/
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import { pool } from "./db";
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export interface VerifiedSpecs {
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transceiverId: string;
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fiberType?: string; // SMF, MMF, Copper, AOC
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connector?: string; // LC, SC, MPO-12, MPO-16, RJ45, DAC, AOC
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wavelengths?: string; // "850nm", "1310nm", "1310nm (4λ CWDM)", etc.
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reachMeters?: number;
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reachLabel?: string;
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powerConsumptionW?: number;
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tempRange?: string; // COM, IND
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modulation?: string; // NRZ, PAM4
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domSupport?: boolean;
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imageUrl?: string;
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datasheetUrl?: string;
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source: string; // "fs.com", "flexoptix.net", etc.
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}
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/**
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* Update transceiver with verified specs from a vendor product page.
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* Sets data_confidence to 'scraped_unverified' (better than 'enriched_estimated').
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*/
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export async function updateVerifiedSpecs(specs: VerifiedSpecs): Promise<boolean> {
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const updates: string[] = [];
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const values: any[] = [];
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let idx = 1;
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// Only update fields that have a new value
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if (specs.fiberType) {
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updates.push(`fiber_type = $${idx}`);
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values.push(specs.fiberType);
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idx++;
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}
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if (specs.connector) {
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updates.push(`connector = $${idx}`);
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values.push(specs.connector);
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idx++;
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}
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if (specs.wavelengths) {
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updates.push(`wavelengths = $${idx}`);
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values.push(specs.wavelengths);
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idx++;
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}
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if (specs.reachMeters && specs.reachMeters > 0) {
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updates.push(`reach_meters = $${idx}`);
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values.push(specs.reachMeters);
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idx++;
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}
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if (specs.reachLabel) {
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updates.push(`reach_label = $${idx}`);
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values.push(specs.reachLabel);
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idx++;
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}
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if (specs.powerConsumptionW && specs.powerConsumptionW > 0) {
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updates.push(`power_consumption_w = $${idx}`);
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values.push(specs.powerConsumptionW);
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idx++;
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}
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if (specs.tempRange) {
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updates.push(`temp_range = $${idx}`);
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values.push(specs.tempRange);
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idx++;
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}
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if (specs.modulation) {
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updates.push(`modulation = $${idx}`);
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values.push(specs.modulation);
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idx++;
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}
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if (specs.domSupport !== undefined) {
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updates.push(`dom_support = $${idx}`);
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values.push(specs.domSupport);
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idx++;
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}
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if (specs.imageUrl) {
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updates.push(`image_url = $${idx}, has_image = true`);
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values.push(specs.imageUrl);
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idx++;
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}
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if (specs.datasheetUrl) {
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// Use the correct column name based on schema
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updates.push(`datasheet_r2_key = $${idx}`);
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values.push(specs.datasheetUrl);
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idx++;
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}
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if (updates.length === 0) return false;
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// Always upgrade confidence from estimated to scraped
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updates.push(`data_confidence = 'scraped_unverified'`);
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updates.push(`updated_at = NOW()`);
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values.push(specs.transceiverId);
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await pool.query(
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`UPDATE transceivers SET ${updates.join(", ")} WHERE id = $${idx}`,
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values
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);
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return true;
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}
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/**
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* Parse a spec table from a product page into structured data.
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* Works for fs.com, 10gtek, and similar HTML spec tables.
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*/
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export function parseSpecTable(specs: Record<string, string>): Partial<VerifiedSpecs> {
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const result: Partial<VerifiedSpecs> = {};
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for (const [rawKey, rawVal] of Object.entries(specs)) {
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const key = rawKey.toLowerCase().trim();
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const val = rawVal.trim();
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// Fiber Type
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if (key.includes("fiber") && key.includes("type") || key === "cable type" || key === "media") {
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if (/single.?mode|smf|os2/i.test(val)) result.fiberType = "SMF";
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else if (/multi.?mode|mmf|om[1-5]/i.test(val)) result.fiberType = "MMF";
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else if (/copper|cat[56]/i.test(val)) result.fiberType = "Copper";
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else if (/aoc|active.optical/i.test(val)) result.fiberType = "AOC";
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}
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// Connector
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if (key.includes("connector") || key.includes("interface")) {
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if (/duplex\s*lc|lc\s*duplex|lc\/pc|lc\/upc|lc\/apc/i.test(val)) result.connector = "LC";
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else if (/\blc\b/i.test(val)) result.connector = "LC";
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else if (/sc\/pc|sc\/apc|\bsc\b/i.test(val)) result.connector = "SC";
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else if (/mpo-?24/i.test(val)) result.connector = "MPO-24";
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else if (/mpo-?16/i.test(val)) result.connector = "MPO-16";
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else if (/mpo-?12|mtp-?12|mpo\b|mtp\b/i.test(val)) result.connector = "MPO-12";
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else if (/rj-?45|copper/i.test(val)) result.connector = "RJ45";
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else if (/cs\b/i.test(val)) result.connector = "CS";
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else if (/sn\b/i.test(val)) result.connector = "SN";
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}
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// Wavelength
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if (key.includes("wavelength") || key.includes("laser") || key === "tx wavelength") {
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const nmMatch = val.match(/([\d.]+)\s*nm/i);
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if (nmMatch) result.wavelengths = nmMatch[1] + "nm";
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// Check for multi-wavelength
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if (/cwdm/i.test(val)) result.wavelengths = val;
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if (/dwdm/i.test(val)) result.wavelengths = val;
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}
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// Reach / Distance
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if (key.includes("distance") || key.includes("reach") || key.includes("transmission") || key === "max link length") {
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const kmMatch = val.match(/([\d.]+)\s*km/i);
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const mMatch = val.match(/([\d.]+)\s*m\b/i);
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if (kmMatch) {
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const km = parseFloat(kmMatch[1]!);
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result.reachMeters = Math.round(km * 1000);
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result.reachLabel = km >= 1 ? `${km}km` : `${result.reachMeters}m`;
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} else if (mMatch) {
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result.reachMeters = parseInt(mMatch[1]!);
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result.reachLabel = `${result.reachMeters}m`;
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}
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}
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// Power Consumption
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if (key.includes("power") && (key.includes("consumption") || key.includes("dissipation") || key.includes("max"))) {
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const wMatch = val.match(/([\d.]+)\s*w/i);
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if (wMatch) result.powerConsumptionW = parseFloat(wMatch[1]!);
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}
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// Temperature
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if (key.includes("temperature") || key.includes("temp") && key.includes("range")) {
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if (/0.*70|commercial/i.test(val)) result.tempRange = "COM";
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else if (/-40.*85|industrial/i.test(val)) result.tempRange = "IND";
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}
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// DOM
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if (key.includes("dom") || key.includes("ddm") || key.includes("diagnostic")) {
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result.domSupport = /yes|supported|ddm|dom/i.test(val);
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}
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// Modulation
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if (key.includes("modulation") || key.includes("encoding")) {
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if (/pam4|pam-4/i.test(val)) result.modulation = "PAM4";
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else if (/nrz/i.test(val)) result.modulation = "NRZ";
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}
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}
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||||||
|
return result;
|
||||||
|
}
|
||||||
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Reference in New Issue
Block a user