1 files changed, 112 insertions, 0 deletions
diff --git a/refresh/servers.js b/refresh/servers.js
new file mode 100644
index 0000000..e6b7d25
--- /dev/null
+++ b/refresh/servers.js
@@ -0,0 +1,112 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2022- Equestria.dev Developers
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+const dns = require("dns");
+const superagent = require("superagent");
+
+function resolveDNSAsync(domain) {
+    return new Promise((res, rej) => {
+        if (!/([\--z]+\.)?([\--z]+)\.([A-z]+)/g.test(domain)) return rej("Not a valid domain");
+
+        const options = {
+            family: 4,
+            hints: dns.ADDRCONFIG | dns.V4MAPPED
+        };
+        dns.lookup(domain, options, (err, address) => {
+            if (err) return rej(err);
+            res(address);
+        });
+    });
+}
+
+function roundToTwo(num) {
+    return +(Math.round(num + "e+2")  + "e-2");
+}
+
+module.exports = () => {
+    // Code entered here will be run every 5 minutes
+    return new Promise(async (res) => {
+        let servers = {
+            canterlot: [await resolveDNSAsync("canterlot.equestria.dev"), 52937],
+            ponyville: [await resolveDNSAsync("ponyville-ipv4.equestria.dev"), 52937],
+            bridlewood: [await resolveDNSAsync("bridlewood.equestria.dev"), 52937],
+            zephyrheights: [await resolveDNSAsync("zephyrheights-ipv4.equestria.dev"), 52938],
+            maretimebay: [await resolveDNSAsync("maretimebay-ipv4.equestria.dev"), 52937]
+        }
+
+        let stats = {}
+
+        for (let key in Object.keys(servers)) {
+            key = Object.keys(servers)[key];
+            let status = {
+                online: null,
+                cpu: null,
+                memory: null,
+                os: null,
+                uptime: null
+            }
+
+            superagent.get(`http://${servers[key][0]}:${servers[key][1]}/json`)
+                .timeout({
+                    response: 5000,
+                })
+                .then(data => data = data.body)
+                .then(data => {
+                    status.online = true;
+                    status.cpu = data.cpu;
+                    status.cpu.load = Math.floor(data.cpu.load * 100);
+                    status.memory = data.memory;
+                    status.memory.swap.used = roundToTwo(data.memory.swap.used / 1073741824);
+                    status.memory.swap.free = roundToTwo(data.memory.swap.free / 1073741824);
+                    status.memory.swap.total = roundToTwo(data.memory.swap.total / 1073741824);
+                    status.memory.physical.used = roundToTwo(data.memory.physical.used / 1073741824);
+                    status.memory.physical.free = roundToTwo(data.memory.physical.free / 1073741824);
+                    status.memory.physical.total = roundToTwo(data.memory.physical.total / 1073741824);
+                    status.os = data.os;
+                    status.uptime = data.uptime;
+                })
+                .catch(reason => {
+                    if (reason.timeout) {
+                        // We timed out.
+                        status.online = false;
+                    } else {
+                        if(reason.code === "ECONNREFUSED") {
+                            status.online = false;
+                            console.warn(`Server ${key} refused our connection. `)
+                        } else {
+                            console.error(reason);
+                        }
+                    }
+                })
+                .finally(() => {
+                    stats[key] = status;
+
+                    if(Object.keys(stats).length === Object.keys(servers).length) {
+                        res(stats);
+                    }
+                });
+        }
+    });
+}