Merge pull request #369 from shamoon/glances-info-widget

Feature: Glances info widget

src/pages/api/widgets/glances.js

@@ -0,0 +1,52 @@
+import { httpProxy } from "utils/proxy/http";
+import createLogger from "utils/logger";
+import { getSettings } from "utils/config/config";
+
+const logger = createLogger("glances");
+
+export default async function handler(req, res) {
+  const { id } = req.query;
+
+  let errorMessage;
+
+  let instanceID = "glances";
+  if (id) { // multiple instances
+    instanceID = id;
+  }
+  const settings = getSettings();
+  const instanceSettings = settings[instanceID];
+  if (!instanceSettings) {
+    errorMessage = id ? `There is no glances section with id '${id}' in settings.yaml` : "There is no glances section in settings.yaml";
+    logger.error(errorMessage);
+    return res.status(400).json({ error: errorMessage });
+  }
+  
+  const url = instanceSettings?.url;
+  if (!url) {
+    errorMessage = "Missing Glances URL";
+    logger.error(errorMessage);
+    return res.status(400).json({ error: errorMessage });
+  }
+
+  const apiUrl = `${url}/api/3/quicklook`;
+  const headers = {
+    "Accept-Encoding": "application/json"
+  };
+  if (instanceSettings.username && instanceSettings.password) {
+    headers.Authorization = `Basic ${Buffer.from(`${instanceSettings.username}:${instanceSettings.password}`).toString("base64")}`
+  }
+  const params = { method: "GET", headers };
+
+  const [status, contentType, data] = await httpProxy(apiUrl, params);
+
+  if (status === 401) {
+    logger.error("Authorization failure getting data from glances API. Data: %s", data);
+  }
+
+  if (status !== 200) {
+    logger.error("HTTP %d getting data from glances API. Data: %s", status, data);
+  }
+
+  if (contentType) res.setHeader("Content-Type", contentType);
+  return res.status(status).send(data);
+}