Feature: Backrest widget (#5741)

Co-authored-by: Renan Greca <renangreca@gmail.com>
Co-authored-by: shamoon <4887959+shamoon@users.noreply.github.com>

src/widgets/backrest/proxy.js

@@ -0,0 +1,96 @@
+import getServiceWidget from "utils/config/service-helpers";
+import createLogger from "utils/logger";
+import { asJson, formatApiCall } from "utils/proxy/api-helpers";
+import { httpProxy } from "utils/proxy/http";
+import widgets from "widgets/widgets";
+
+const proxyName = "backrestProxyHandler";
+const logger = createLogger(proxyName);
+
+function sumField(plans, field) {
+  return plans.reduce((sum, plan) => {
+    const num = Number(plan[field]);
+    return sum + (Number.isNaN(num) ? 0 : num);
+  }, 0);
+}
+
+function buildResponse(plans) {
+  const numSuccess30Days = sumField(plans, "backupsSuccessLast30days");
+  const numFailure30Days = sumField(plans, "backupsFailed30days");
+  const bytesAdded30Days = sumField(plans, "bytesAddedLast30days");
+
+  var numSuccessLatest = 0;
+  var numFailureLatest = 0;
+
+  plans.forEach((plan) => {
+    const statuses = plan?.recentBackups?.status;
+    if (Array.isArray(statuses) && statuses.length > 0) {
+      if (statuses[0] === "STATUS_SUCCESS") {
+        numSuccessLatest++;
+      } else {
+        numFailureLatest++;
+      }
+    }
+  });
+
+  return {
+    numPlans: plans.length,
+    numSuccess30Days,
+    numFailure30Days,
+    numSuccessLatest,
+    numFailureLatest,
+    bytesAdded30Days,
+  };
+}
+
+export default async function backrestProxyHandler(req, res) {
+  const { group, service, endpoint, index } = req.query;
+
+  if (!group || !service) {
+    logger.debug("Invalid or missing service '%s' or group '%s'", service, group);
+    return res.status(400).json({ error: "Invalid proxy service type" });
+  }
+
+  const widget = await getServiceWidget(group, service, index);
+
+  if (!widget) {
+    logger.debug("Invalid or missing widget for service '%s' in group '%s'", service, group);
+    return res.status(400).json({ error: "Invalid proxy service type" });
+  }
+
+  const headers = {
+    "content-type": "application/json",
+  };
+
+  if (widget.username && widget.password) {
+    headers.Authorization = `Basic ${Buffer.from(`${widget.username}:${widget.password}`).toString("base64")}`;
+  }
+
+  const { api } = widgets[widget.type];
+  const url = new URL(formatApiCall(api, { endpoint, ...widget }));
+
+  try {
+    const [status, contentType, data] = await httpProxy(url, {
+      method: "POST",
+      body: JSON.stringify({}),
+      headers,
+    });
+
+    if (status !== 200) {
+      logger.error("Error getting data from Backrest: %d.  Data: %s", status, data);
+      return res.status(500).send({ error: { message: "Error getting data from Backrest", url, data } });
+    }
+
+    if (contentType) res.setHeader("Content-Type", "application/json");
+    const plans = asJson(data).planSummaries;
+    if (!Array.isArray(plans)) {
+      logger.error("Invalid plans data: %s", JSON.stringify(plans));
+      return res.status(500).send({ error: { message: "Invalid plans data", url, data } });
+    }
+    const response = buildResponse(plans);
+    return res.status(status).send(response);
+  } catch (error) {
+    logger.error("Exception calling Backrest API: %s", error.message);
+    return res.status(500).json({ error: "Backrest API Error", message: error.message });
+  }
+}