Merge pull request #684 from shocknet/state-beacon

update state beacon

src/index.ts

@@ -21,6 +21,7 @@ const start = async () => {
     const nostrSettings = LoadNosrtSettingsFromEnv()
     const { Send } = nostrMiddleware(serverMethods, mainHandler, { ...nostrSettings, apps })
     mainHandler.attachNostrSend(Send)
+    mainHandler.StartBeacons()
     const Server = NewServer(serverMethods, serverOptions(mainHandler))
     Server.Listen(mainSettings.servicePort)
 }

src/services/main/applicationManager.ts

@@ -5,8 +5,9 @@ import { MainSettings } from './settings.js'
 import PaymentManager from './paymentManager.js'
 import { InboundOptionals, defaultInvoiceExpiry } from '../storage/paymentStorage.js'
 import { ApplicationUser } from '../storage/entity/ApplicationUser.js'
-import { getLogger } from '../helpers/logger.js'
+import { PubLogger, getLogger } from '../helpers/logger.js'
 import crypto from 'crypto'
+import { Application } from '../storage/entity/Application.js'
 
 const TOKEN_EXPIRY_TIME = 2 * 60 * 1000 // 2 minutes, in milliseconds
 
@@ -19,11 +20,18 @@ export default class {
     settings: MainSettings
     paymentManager: PaymentManager
     nPubLinkingTokens = new Map<string, NsecLinkingData>();
-    linkingTokenInterval: NodeJS.Timeout
+    linkingTokenInterval: NodeJS.Timeout | null = null
+    serviceBeaconInterval: NodeJS.Timeout | null = null
+    log: PubLogger
     constructor(storage: Storage, settings: MainSettings, paymentManager: PaymentManager) {
+        this.log = getLogger({ component: "ApplicationManager" })
         this.storage = storage
         this.settings = settings
         this.paymentManager = paymentManager
+        this.StartLinkingTokenInterval()
+    }
+
+    StartLinkingTokenInterval() {
         this.linkingTokenInterval = setInterval(() => {
             const now = Date.now();
             for (let [token, data] of this.nPubLinkingTokens) {
@@ -36,9 +44,28 @@ export default class {
             }
         }, 60 * 1000); // 1 minute
     }
+
+    async StartAppsServiceBeacon(publishBeacon: (app: Application) => void) {
+        this.serviceBeaconInterval = setInterval(async () => {
+            try {
+                const apps = await this.storage.applicationStorage.GetApplications()
+                apps.forEach(app => {
+                    publishBeacon(app)
+                })
+            } catch (e) {
+                this.log("error in beacon", (e as any).message)
+            }
+        }, 60 * 1000)
+    }
+
     Stop() {
+        if (this.linkingTokenInterval) {
             clearInterval(this.linkingTokenInterval)
         }
+        if (this.serviceBeaconInterval) {
+            clearInterval(this.serviceBeaconInterval)
+        }
+    }
     SignAppToken(appId: string): string {
         return jwt.sign({ appId }, this.settings.jwtSecret);
     }

src/services/main/index.ts

@@ -23,7 +23,7 @@ type UserOperationsSub = {
     newIncomingTx: (operation: Types.UserOperation) => void
     newOutgoingTx: (operation: Types.UserOperation) => void
 }
-
+const appTag = "Lightning.Pub"
 export default class {
     storage: Storage
     lnd: LND
@@ -36,7 +36,6 @@ export default class {
     paymentSubs: Record<string, ((op: Types.UserOperation) => void) | null> = {}
     metricsManager: MetricsManager
     nostrSend: NostrSend = () => { getLogger({})("nostr send not initialized yet") }
-
     constructor(settings: MainSettings, storage: Storage) {
         this.settings = settings
         this.storage = storage
@@ -56,6 +55,12 @@ export default class {
         this.paymentManager.Stop()
     }
 
+    StartBeacons() {
+        this.applicationManager.StartAppsServiceBeacon(app => {
+            this.UpdateBeacon(app, { type: 'service', name: app.name })
+        })
+    }
+
     attachNostrSend(f: NostrSend) {
         this.nostrSend = f
     }
@@ -206,6 +211,22 @@ export default class {
         this.nostrSend(app.app_id, { type: 'content', content: JSON.stringify(message), pub: user.nostr_public_key })
     }
 
+    async UpdateBeacon(app: Application, content: { type: 'service', name: string }) {
+        if (!app.nostr_public_key) {
+            getLogger({ appName: app.name })("cannot update beacon, public key not set")
+            return
+        }
+        const tags = [["d", appTag]]
+        const event: UnsignedEvent = {
+            content: JSON.stringify(content),
+            created_at: Math.floor(Date.now() / 1000),
+            kind: 30078,
+            pubkey: app.nostr_public_key,
+            tags,
+        }
+        this.nostrSend(app.app_id, { type: 'event', event })
+    }
+
     async createZapReceipt(log: PubLogger, invoice: UserReceivingInvoice) {
         const zapInfo = invoice.zap_info
         if (!zapInfo || !invoice.linkedApplication || !invoice.linkedApplication.nostr_public_key) {