insert or update home-community on start dht-node

dht-node/.env.template

@@ -8,6 +8,10 @@ DB_PASSWORD=$DB_PASSWORD
 DB_DATABASE=gradido_community
 TYPEORM_LOGGING_RELATIVE_PATH=$TYPEORM_LOGGING_RELATIVE_PATH
 
+# Community
+COMMUNITY_NAME=$COMMUNITY_NAME
+COMMUNITY_DESCRIPTION=$COMMUNITY_DESCRIPTION
+
 # Federation
 FEDERATION_DHT_CONFIG_VERSION=$FEDERATION_DHT_CONFIG_VERSION
 # if you set the value of FEDERATION_DHT_TOPIC, the DHT hyperswarm will start to announce and listen 

dht-node/package.json

@@ -23,7 +23,8 @@
     "nodemon": "^2.0.20",
     "ts-node": "^10.9.1",
     "tsconfig-paths": "^4.1.2",
-    "typescript": "^4.9.4"
+    "typescript": "^4.9.4",
+    "uuid": "^8.3.2"
   },
   "devDependencies": {
     "@types/dotenv": "^8.2.0",
@@ -31,6 +32,7 @@
     "@types/node": "^18.11.18",
     "@typescript-eslint/eslint-plugin": "^5.48.0",
     "@typescript-eslint/parser": "^5.48.0",
+    "@types/uuid": "^8.3.4",
     "eslint": "^8.31.0",
     "eslint-config-prettier": "^8.3.0",
     "eslint-config-standard": "^17.0.0",

dht-node/src/config/index.ts

@@ -9,7 +9,7 @@ const constants = {
   LOG_LEVEL: process.env.LOG_LEVEL || 'info',
   CONFIG_VERSION: {
     DEFAULT: 'DEFAULT',
-    EXPECTED: 'v2.2023-02-07',
+    EXPECTED: 'v3.2023-04-26',
     CURRENT: '',
   },
 }
@@ -28,6 +28,12 @@ const database = {
     process.env.TYPEORM_LOGGING_RELATIVE_PATH || 'typeorm.dht-node.log',
 }
 
+const community = {
+  COMMUNITY_NAME: process.env.COMMUNITY_NAME || 'Gradido Entwicklung',
+  COMMUNITY_DESCRIPTION:
+    process.env.COMMUNITY_DESCRIPTION || 'Gradido-Community einer lokalen Entwicklungsumgebung.',
+}
+
 const federation = {
   FEDERATION_DHT_TOPIC: process.env.FEDERATION_DHT_TOPIC || 'GRADIDO_HUB',
   FEDERATION_DHT_SEED: process.env.FEDERATION_DHT_SEED || null,
@@ -51,6 +57,7 @@ const CONFIG = {
   ...constants,
   ...server,
   ...database,
+  ...community,
   ...federation,
 }
 

dht-node/src/dht_node/index.ts

@@ -4,8 +4,10 @@ import DHT from '@hyperswarm/dht'
 import { logger } from '@/server/logger'
 import CONFIG from '@/config'
 import { FederatedCommunity as DbFederatedCommunity } from '@entity/FederatedCommunity'
+import { Community as DbCommunity } from '@entity/Community'
 import DEVOP from '@/config/devop'
 import { setDevOpEnvValue } from '@/config/tools'
+import { v4 as uuidv4 } from 'uuid'
 
 const KEY_SECRET_SEEDBYTES = 32
 const getSeed = (): Buffer | null => {
@@ -42,8 +44,9 @@ export const startDHT = async (topic: string): Promise<void> => {
     // insert or update keyPair in .env.devop file
     setDevOpEnvValue('HOME_COMMUNITY_PUBLICKEY', keyPair.publicKey.toString('hex'))
     setDevOpEnvValue('HOME_COMMUNITY_PRIVATEKEY', keyPair.secretKey.toString('hex'))
+    await writeHomeCommunityEntry(keyPair.publicKey)
 
-    const ownApiVersions = await writeFederatedHomeCommunityEnries(keyPair.publicKey)
+    const ownApiVersions = await writeFederatedHomeCommunityEntries(keyPair.publicKey)
     logger.info(`ApiList: ${JSON.stringify(ownApiVersions)}`)
 
     const node = new DHT({ keyPair })
@@ -191,7 +194,7 @@ export const startDHT = async (topic: string): Promise<void> => {
   }
 }
 
-async function writeFederatedHomeCommunityEnries(pubKey: any): Promise<CommunityApi[]> {
+async function writeFederatedHomeCommunityEntries(pubKey: any): Promise<CommunityApi[]> {
   const homeApiVersions: CommunityApi[] = Object.values(ApiVersionType).map(function (apiEnum) {
     const comApi: CommunityApi = {
       api: apiEnum,
@@ -215,7 +218,56 @@ async function writeFederatedHomeCommunityEnries(pubKey: any): Promise<Community
       logger.info(`federation home-community inserted successfully: ${JSON.stringify(homeCom)}`)
     })
   } catch (err) {
-    throw new Error(`Federation: Error writing HomeCommunity-Entries: ${err}`)
+    throw new Error(`Federation: Error writing federated HomeCommunity-Entries: ${err}`)
   }
   return homeApiVersions
 }
+
+async function writeHomeCommunityEntry(pubKey: any): Promise<void> {
+  try {
+    // check for existing homeCommunity entry
+    let homeCom = await DbCommunity.findOne({ foreign: false, publicKey: pubKey })
+    if (!homeCom) {
+      // check if a homecommunity with a different publicKey still exists
+      homeCom = await DbCommunity.findOne({ foreign: false })
+    }
+    if (homeCom) {
+      // simply update the existing entry, but it MUST keep the ID and UUID because of possible relations
+      homeCom.publicKey = pubKey.toString('hex')
+      homeCom.url = CONFIG.FEDERATION_COMMUNITY_URL
+      homeCom.name = CONFIG.COMMUNITY_NAME
+      homeCom.description = CONFIG.COMMUNITY_DESCRIPTION
+      // this will NOT update the updatedAt column, to distingue between a normal update and the last announcement
+      await DbCommunity.save(homeCom)
+      logger.info(`home-community updated successfully: ${JSON.stringify(homeCom)}`)
+    } else {
+      // insert a new homecommunity entry including a new ID and UUID
+      homeCom = new DbCommunity()
+      homeCom.foreign = false
+      homeCom.publicKey = pubKey.toString('hex')
+      homeCom.communityUuid = await newCommunityUuid()
+      homeCom.url = CONFIG.FEDERATION_COMMUNITY_URL
+      homeCom.name = CONFIG.COMMUNITY_NAME
+      homeCom.description = CONFIG.COMMUNITY_DESCRIPTION
+      homeCom.creationDate = new Date()
+      // this will NOT update the updatedAt column, to distingue between a normal update and the last announcement
+      await DbCommunity.insert(homeCom)
+      logger.info(`home-community inserted successfully: ${JSON.stringify(homeCom)}`)
+    }
+  } catch (err) {
+    throw new Error(`Federation: Error writing HomeCommunity-Entry: ${err}`)
+  }
+}
+
+const newCommunityUuid = async (): Promise<string> => {
+  let uuid: string
+  let countIds: number
+  do {
+    uuid = uuidv4()
+    countIds = await DbCommunity.count({ where: { communityUuid: uuid } })
+    if (countIds > 0) {
+      logger.info('CommunityUuid creation conflict...')
+    }
+  } while (countIds > 0)
+  return uuid
+}

dht-node/src/index.ts

@@ -25,18 +25,20 @@ async function main() {
   // first read from .env.devop if exist
   let dhttopic = DEVOP.FEDERATION_DHT_TOPIC
   logger.debug('dhttopic set by DEVOP.FEDERATION_DHT_TOPIC={}', DEVOP.FEDERATION_DHT_TOPIC)
-  if(!dhttopic) {
+  if (!dhttopic) {
     dhttopic = CONFIG.FEDERATION_DHT_TOPIC
-    logger.debug('dhttopic overwritten by CONFIG.FEDERATION_DHT_TOPIC={}', CONFIG.FEDERATION_DHT_TOPIC)
+    logger.debug(
+      'dhttopic overwritten by CONFIG.FEDERATION_DHT_TOPIC={}',
+      CONFIG.FEDERATION_DHT_TOPIC,
+    )
   }
   let dhtseed = DEVOP.FEDERATION_DHT_SEED
   logger.debug('dhtseed set by DEVOP.FEDERATION_DHT_SEED={}', DEVOP.FEDERATION_DHT_SEED)
-  if(!dhtseed) {
+  if (!dhtseed) {
     dhtseed = CONFIG.FEDERATION_DHT_SEED
     logger.debug('dhtseed overwritten by CONFIG.FEDERATION_DHT_SEED={}', CONFIG.FEDERATION_DHT_SEED)
   }
-  logger.info(
+  logger.info(`starting Federation on ${dhttopic} ${dhtseed ? 'with seed...' : 'without seed...'}`)
-    `starting Federation on ${dhttopic} ${dhtseed ? 'with seed...' : 'without seed...'}`)
   await startDHT(dhttopic)
 }
 

dht-node/yarn.lock

@@ -769,6 +769,11 @@
   resolved "https://registry.yarnpkg.com/@types/stack-utils/-/stack-utils-2.0.1.tgz#20f18294f797f2209b5f65c8e3b5c8e8261d127c"
   integrity sha512-Hl219/BT5fLAaz6NDkSuhzasy49dwQS/DSdu4MdggFB8zcXv7vflBI3xp7FEmkmdDkBUI2bPUNeMttp2knYdxw==
 
+"@types/uuid@^8.3.4":
+  version "8.3.4"
+  resolved "https://registry.yarnpkg.com/@types/uuid/-/uuid-8.3.4.tgz#bd86a43617df0594787d38b735f55c805becf1bc"
+  integrity sha512-c/I8ZRb51j+pYGAu5CrFMRxqZ2ke4y2grEBO5AUjgSkSk+qT2Ea+OdWElz/OiMf5MNpn2b17kuVBwZLQJXzihw==
+
 "@types/yargs-parser@*":
   version "21.0.0"
   resolved "https://registry.yarnpkg.com/@types/yargs-parser/-/yargs-parser-21.0.0.tgz#0c60e537fa790f5f9472ed2776c2b71ec117351b"
@@ -4138,6 +4143,11 @@ url-parse@^1.5.3:
     querystringify "^2.1.1"
     requires-port "^1.0.0"
 
+uuid@^8.3.2:
+  version "8.3.2"
+  resolved "https://registry.yarnpkg.com/uuid/-/uuid-8.3.2.tgz#80d5b5ced271bb9af6c445f21a1a04c606cefbe2"
+  integrity sha512-+NYs2QeMWy+GWFOEm9xnn6HCDp0l7QBD7ml8zLUmJ+93Q5NF0NocErnwkTkXVFNiX3/fpC6afS8Dhb/gz7R7eg==
+
 v8-compile-cache-lib@^3.0.1:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/v8-compile-cache-lib/-/v8-compile-cache-lib-3.0.1.tgz#6336e8d71965cb3d35a1bbb7868445a7c05264bf"