feat: HA event handling + emitting

server/core/auth.js

@@ -281,6 +281,7 @@ module.exports = {
   async reloadGroups () {
     const groupsArray = await WIKI.models.groups.query()
     this.groups = _.keyBy(groupsArray, 'id')
+    WIKI.auth.guest = await WIKI.models.users.getGuestUser()
   },
 
   /**
@@ -324,6 +325,7 @@ module.exports = {
     ])
 
     await WIKI.auth.activateStrategies()
+    WIKI.events.outbound.emit('reloadAuthStrategies')
 
     WIKI.logger.info('Regenerated certificates: [ COMPLETED ]')
   },
@@ -356,5 +358,20 @@ module.exports = {
     await guestUser.$relatedQuery('groups').relate(guestGroup.id)
 
     WIKI.logger.info('Guest user has been reset: [ COMPLETED ]')
+  },
+
+  /**
+   * Subscribe to HA propagation events
+   */
+  subscribeToEvents() {
+    WIKI.events.inbound.on('reloadGroups', () => {
+      WIKI.auth.reloadGroups()
+    })
+    WIKI.events.inbound.on('reloadApiKeys', () => {
+      WIKI.auth.reloadApiKeys()
+    })
+    WIKI.events.inbound.on('reloadAuthStrategies', () => {
+      WIKI.auth.activateStrategies()
+    })
   }
 }

server/core/config.js

@@ -95,7 +95,7 @@ module.exports = {
    * @param {Array} keys Array of keys to save
    * @returns Promise
    */
-  async saveToDb(keys) {
+  async saveToDb(keys, propagate = true) {
     try {
       for (let key of keys) {
         let value = _.get(WIKI.config, key, null)
@@ -107,6 +107,9 @@ module.exports = {
           await WIKI.models.settings.query().insert({ key, value })
         }
       }
+      if (propagate) {
+        WIKI.events.outbound.emit('reloadConfig')
+      }
     } catch (err) {
       WIKI.logger.error(`Failed to save configuration to DB: ${err.message}`)
       return false
@@ -119,5 +122,15 @@ module.exports = {
    */
   async applyFlags() {
     WIKI.models.knex.client.config.debug = WIKI.config.flags.sqllog
+  },
+
+  /**
+   * Subscribe to HA propagation events
+   */
+  subscribeToEvents() {
+    WIKI.events.inbound.on('reloadConfig', async () => {
+      await WIKI.configSvc.loadFromDb()
+      await WIKI.configSvc.applyFlags()
+    })
   }
 }

server/core/db.js

@@ -203,12 +203,22 @@ module.exports = {
         WIKI.logger.debug(ev)
       }
     })
+
+    // -> Outbound events handling
+
     this.listener.addChannel('wiki', payload => {
       if (_.has(payload.event) && payload.source !== WIKI.INSTANCE_ID) {
-        WIKI.events.emit(payload.event, payload.value)
+        WIKI.logger.debug(`Received event ${payload.event} from instance ${payload.source}: [ OK ]`)
+        WIKI.events.inbound.emit(payload.event, payload.value)
       }
     })
-    WIKI.events.onAny(this.notifyViaDB)
+    WIKI.events.outbound.onAny(this.notifyViaDB)
+
+    // -> Listen to inbound events
+
+    WIKI.auth.subscribeToEvents()
+    WIKI.configSvc.subscribeToEvents()
+    WIKI.models.pages.subscribeToEvents()
 
     WIKI.logger.info(`High-Availability Listener initialized successfully: [ OK ]`)
   },
@@ -217,7 +227,8 @@ module.exports = {
    */
   async unsubscribeToNotifications () {
     if (this.listener) {
-      WIKI.events.offAny(this.notifyViaDB)
+      WIKI.events.outbound.offAny(this.notifyViaDB)
+      WIKI.events.inbound.removeAllListeners()
       this.listener.close()
     }
   },

server/core/kernel.js

@@ -36,8 +36,10 @@ module.exports = {
       WIKI.scheduler = require('./scheduler').init()
       WIKI.servers = require('./servers')
       WIKI.sideloader = require('./sideloader').init()
-      WIKI.events = new EventEmitter()
-      await WIKI.models.subscribeToNotifications()
+      WIKI.events = {
+        inbound: new EventEmitter(),
+        outbound: new EventEmitter()
+      }
     } catch (err) {
       WIKI.logger.error(err)
       process.exit(1)
@@ -77,6 +79,8 @@ module.exports = {
     await WIKI.models.searchEngines.initEngine()
     await WIKI.models.storage.initTargets()
     WIKI.scheduler.start()
+
+    await WIKI.models.subscribeToNotifications()
   },
   /**
    * Init Telemetry