Drop cacheable-lookup (#4178)

* WIP

* WIP

server/cacheable-dns-http-agent.js

@@ -1,88 +0,0 @@
-const https = require("https");
-const http = require("http");
-const CacheableLookup = require("cacheable-lookup");
-const { Settings } = require("./settings");
-const { log } = require("../src/util");
-
-class CacheableDnsHttpAgent {
-
-    static cacheable = new CacheableLookup();
-
-    static httpAgentList = {};
-    static httpsAgentList = {};
-
-    static enable = false;
-
-    /**
-     * Register/Disable cacheable to global agents
-     * @returns {void}
-     */
-    static async update() {
-        log.debug("CacheableDnsHttpAgent", "update");
-        let isEnable = await Settings.get("dnsCache");
-
-        if (isEnable !== this.enable) {
-            log.debug("CacheableDnsHttpAgent", "value changed");
-
-            if (isEnable) {
-                log.debug("CacheableDnsHttpAgent", "enable");
-                this.cacheable.install(http.globalAgent);
-                this.cacheable.install(https.globalAgent);
-            } else {
-                log.debug("CacheableDnsHttpAgent", "disable");
-                this.cacheable.uninstall(http.globalAgent);
-                this.cacheable.uninstall(https.globalAgent);
-            }
-        }
-
-        this.enable = isEnable;
-    }
-
-    /**
-     * Attach cacheable to HTTP agent
-     * @param {http.Agent} agent Agent to install
-     * @returns {void}
-     */
-    static install(agent) {
-        this.cacheable.install(agent);
-    }
-
-    /**
-     * @param {https.AgentOptions} agentOptions Options to pass to HTTPS agent
-     * @returns {https.Agent} The new HTTPS agent
-     */
-    static getHttpsAgent(agentOptions) {
-        if (!this.enable) {
-            return new https.Agent(agentOptions);
-        }
-
-        let key = JSON.stringify(agentOptions);
-        if (!(key in this.httpsAgentList)) {
-            this.httpsAgentList[key] = new https.Agent(agentOptions);
-            this.cacheable.install(this.httpsAgentList[key]);
-        }
-        return this.httpsAgentList[key];
-    }
-
-    /**
-     * @param {http.AgentOptions} agentOptions Options to pass to the HTTP agent
-     * @returns {https.Agents} The new HTTP agent
-     */
-    static getHttpAgent(agentOptions) {
-        if (!this.enable) {
-            return new http.Agent(agentOptions);
-        }
-
-        let key = JSON.stringify(agentOptions);
-        if (!(key in this.httpAgentList)) {
-            this.httpAgentList[key] = new http.Agent(agentOptions);
-            this.cacheable.install(this.httpAgentList[key]);
-        }
-        return this.httpAgentList[key];
-    }
-
-}
-
-module.exports = {
-    CacheableDnsHttpAgent,
-};

server/model/monitor.js

@@ -15,7 +15,6 @@ const { demoMode } = require("../config");
 const version = require("../../package.json").version;
 const apicache = require("../modules/apicache");
 const { UptimeKumaServer } = require("../uptime-kuma-server");
-const { CacheableDnsHttpAgent } = require("../cacheable-dns-http-agent");
 const { DockerHost } = require("../docker");
 const Gamedig = require("gamedig");
 const jsonata = require("jsonata");
@@ -24,6 +23,8 @@ const crypto = require("crypto");
 const { UptimeCalculator } = require("../uptime-calculator");
 const { CookieJar } = require("tough-cookie");
 const { HttpsCookieAgent } = require("http-cookie-agent/http");
+const https = require("https");
+const http = require("http");
 
 const rootCertificates = rootCertificatesFingerprints();
 
@@ -667,12 +668,12 @@ class Monitor extends BeanModel {
                         headers: {
                             "Accept": "*/*",
                         },
-                        httpsAgent: CacheableDnsHttpAgent.getHttpsAgent({
+                        httpsAgent: new https.Agent({
                             maxCachedSessions: 0,      // Use Custom agent to disable session reuse (https://github.com/nodejs/node/issues/3940)
                             rejectUnauthorized: !this.getIgnoreTls(),
                             secureOptions: crypto.constants.SSL_OP_LEGACY_SERVER_CONNECT,
                         }),
-                        httpAgent: CacheableDnsHttpAgent.getHttpAgent({
+                        httpAgent: new http.Agent({
                             maxCachedSessions: 0,
                         }),
                         maxRedirects: this.maxredirects,
@@ -719,12 +720,12 @@ class Monitor extends BeanModel {
                         headers: {
                             "Accept": "*/*",
                         },
-                        httpsAgent: CacheableDnsHttpAgent.getHttpsAgent({
+                        httpsAgent: new https.Agent({
                             maxCachedSessions: 0,      // Use Custom agent to disable session reuse (https://github.com/nodejs/node/issues/3940)
                             rejectUnauthorized: !this.getIgnoreTls(),
                             secureOptions: crypto.constants.SSL_OP_LEGACY_SERVER_CONNECT,
                         }),
-                        httpAgent: CacheableDnsHttpAgent.getHttpAgent({
+                        httpAgent: new http.Agent({
                             maxCachedSessions: 0,
                         }),
                     };
@@ -739,7 +740,7 @@ class Monitor extends BeanModel {
                         options.socketPath = dockerHost._dockerDaemon;
                     } else if (dockerHost._dockerType === "tcp") {
                         options.baseURL = DockerHost.patchDockerURL(dockerHost._dockerDaemon);
-                        options.httpsAgent = CacheableDnsHttpAgent.getHttpsAgent(
+                        options.httpsAgent = new https.Agent(
                             DockerHost.getHttpsAgentOptions(dockerHost._dockerType, options.baseURL)
                         );
                     }

server/server.js

@@ -144,7 +144,6 @@ const { maintenanceSocketHandler } = require("./socket-handlers/maintenance-sock
 const { apiKeySocketHandler } = require("./socket-handlers/api-key-socket-handler");
 const { generalSocketHandler } = require("./socket-handlers/general-socket-handler");
 const { Settings } = require("./settings");
-const { CacheableDnsHttpAgent } = require("./cacheable-dns-http-agent");
 const apicache = require("./modules/apicache");
 const { resetChrome } = require("./monitor-types/real-browser-monitor-type");
 const { EmbeddedMariaDB } = require("./embedded-mariadb");
@@ -1322,8 +1321,6 @@ let needSetup = false;
                 await setSettings("general", data);
                 server.entryPage = data.entryPage;
 
-                await CacheableDnsHttpAgent.update();
-
                 // Also need to apply timezone globally
                 if (data.serverTimezone) {
                     await server.setTimezone(data.serverTimezone);

server/uptime-kuma-server.js

@@ -7,7 +7,6 @@ const { R } = require("redbean-node");
 const { log } = require("../src/util");
 const Database = require("./database");
 const util = require("util");
-const { CacheableDnsHttpAgent } = require("./cacheable-dns-http-agent");
 const { Settings } = require("./settings");
 const dayjs = require("dayjs");
 const childProcessAsync = require("promisify-child-process");
@@ -131,8 +130,6 @@ class UptimeKumaServer {
         // Static
         this.app.use("/screenshots", express.static(Database.screenshotDir));
 
-        await CacheableDnsHttpAgent.update();
-
         process.env.TZ = await this.getTimezone();
         dayjs.tz.setDefault(process.env.TZ);
         log.debug("DEBUG", "Timezone: " + process.env.TZ);