| {item.asn} |
+
+ {asnNameMap[item.asn] ? (
+ {asnNameMap[item.asn]}
+ ) : (
+ —
+ )}
+ |
{renderCommunityBadge(item.community)} |
{editingAsn === item.asn ? (
diff --git a/frontend/src/lib/asn.js b/frontend/src/lib/asn.js
new file mode 100644
index 0000000..4a884f6
--- /dev/null
+++ b/frontend/src/lib/asn.js
@@ -0,0 +1,86 @@
+// Утилиты для получения названия ASN с кэшем в localStorage
+
+const CACHE_KEY = 'asnNameCache.v1';
+const DEFAULT_TTL_MS = 30 * 24 * 60 * 60 * 1000; // 30 дней
+
+function readCache() {
+ try {
+ const raw = localStorage.getItem(CACHE_KEY);
+ if (!raw) return {};
+ const data = JSON.parse(raw);
+ return typeof data === 'object' && data ? data : {};
+ } catch {
+ return {};
+ }
+}
+
+function writeCache(cache) {
+ try {
+ localStorage.setItem(CACHE_KEY, JSON.stringify(cache));
+ } catch {}
+}
+
+function getCached(asn) {
+ const cache = readCache();
+ const entry = cache[String(asn)];
+ if (!entry) return null;
+ if (Date.now() > (entry.ts || 0)) return null;
+ return entry.name || null;
+}
+
+function setCached(asn, name, ttlMs = DEFAULT_TTL_MS) {
+ const cache = readCache();
+ cache[String(asn)] = { name: String(name || '').trim(), ts: Date.now() + ttlMs };
+ writeCache(cache);
+}
+
+async function fetchFromBGPView(asn) {
+ try {
+ const url = `https://api.bgpview.io/asn/AS${asn}`;
+ const res = await fetch(url, { method: 'GET' });
+ if (!res.ok) throw new Error(`HTTP ${res.status}`);
+ const json = await res.json();
+ const name = json?.data?.name || json?.data?.description || '';
+ return String(name || '').trim() || null;
+ } catch {
+ return null;
+ }
+}
+
+async function fetchFromRIPE(asn) {
+ try {
+ const url = `https://stat.ripe.net/data/as-overview/data.json?resource=AS${asn}`;
+ const res = await fetch(url, { method: 'GET' });
+ if (!res.ok) throw new Error(`HTTP ${res.status}`);
+ const json = await res.json();
+ const name = json?.data?.holder || json?.data?.name || '';
+ return String(name || '').trim() || null;
+ } catch {
+ return null;
+ }
+}
+
+export async function getAsnName(asn, { ttlMs = DEFAULT_TTL_MS } = {}) {
+ const key = String(asn).trim();
+ if (!/^[0-9]+$/.test(key)) return null;
+ const cached = getCached(key);
+ if (cached) return cached;
+ // попытаемся получить из провайдеров
+ const providers = [fetchFromBGPView, fetchFromRIPE];
+ for (const p of providers) {
+ const name = await p(key);
+ if (name) {
+ setCached(key, name, ttlMs);
+ return name;
+ }
+ }
+ // Закэшируем пустой ответ на короткое время, чтобы не долбить API
+ setCached(key, '', 60 * 60 * 1000); // 1 час
+ return null;
+}
+
+export function getAsnNameSync(asn) {
+ return getCached(asn);
+}
+
+
|