Add Snyk service

Author: ryanhefner

services/snyk.js

@@ -0,0 +1,58 @@
+require('es6-promise').polyfill();
+require('isomorphic-fetch');
+
+const LRU = require('lru-cache');
+const express = require('express');
+const router = express.Router();
+
+const Rollbar = require("rollbar");
+const rollbar = new Rollbar(process.env.ROLLBAR_ACCESS_TOKEN);
+
+/**
+ * Cache requests for 3 hours
+ *
+ * @var NodeCache
+ */
+const cache = new LRU({
+  max: 1000,
+  maxAge: 7 * 60 * 60 * 1000,
+});
+
+/**
+ * Origin for api.x requests.
+ *
+ * @const {string}
+ */
+// const apiOrigin = 'https://snyk.io/api/v1';
+const apiOrigin = 'http://snyk-widget.herokuapp.com';
+
+router.get('/*', async (req, res) => {
+  const cachedResponse = cache.get(req.url);
+
+  if (cachedResponse) {
+    res.json(cachedResponse);
+    return;
+  }
+
+  try {
+    const url = `${apiOrigin}/${req.params[0]}`;
+    const response = await fetch(url, {
+      headers: {
+        'Authorization': `${process.env.SNYK_WIDGET_TOKEN}`,
+      },
+    });
+    const json = await response.json();
+    cache.set(req.url, json);
+
+    res.json(json);
+  }
+  catch (e) {
+    console.error(e);
+    rollbar.error(e);
+    res.status(500).json({
+      error: 'Error fetching Snyk resource'
+    });
+  }
+});
+
+module.exports = router;