Reputation: 31
There are 3 bases (front, node, remote). Front <=> node, node <=> remote. When the front base is updated, the data goes to the remote base, but the node is not updated. In theory, the node should be updated first, and then the remote base.
Render db
addPouchPlugin(PouchdbAdapterIdb)
addPouchPlugin(PouchHttpPlugin)
addRxPlugin(RxDBReplicationCouchDBPlugin)
addRxPlugin(RxDBMigrationPlugin)
addRxPlugin(RxDBLeaderElectionPlugin)
addRxPlugin(RxDBQueryBuilderPlugin)
addRxPlugin(RxDBAjvValidatePlugin)
addRxPlugin(RxDBUpdatePlugin)
export const createDb = async () => {
console.log('[src/renderer/database/createDb] createDb')
const productsName = collectionName.getCollectionProductsName()
const documentsName = collectionName.getCollectionDocumentsName()
const settingsName = collectionName.getCollectionSettingsName()
const db = await createRxDatabase<Collections>({
name: 'renderer',
// use pouchdb with the indexeddb-adapter as storage engine.
storage: getRxStoragePouch('idb'),
})
await initCommonCollections({ db, documentsName, productsName, settingsName })
syncDbCollections(db, [productsName, documentsName, settingsName])
db.$.subscribe(({ operation, documentId, documentData }) => {
if (documentData.type === SettingsTypes.DEVICE_SETTING) {
console.log(`Change database RENDER event:\n ${operation}, \n documentData:`, documentData)
}
})
return db
}
Render sync
const remoteDbUrl = `http://localhost:3030/db/`
const logPath = '[src/renderer/database/syncDbCollections]'
export const syncDbCollections = (db: RxDatabase<Collections>, collectionNames: (keyof Collections)[]) => {
console.log('syncDbCollections', collectionNames)
collectionNames.forEach(name => {
const rxReplicationState = db.collections[name].syncCouchDB({
remote: `${remoteDbUrl}${name}`,
options: {
live: true,
retry: true,
},
})
rxReplicationState.error$.subscribe(error => {
console.error(logPath, name, 'error', JSON.stringify(error))
})
})
}
Node base
addPouchPlugin(PouchdbAdapterHttp)
addPouchPlugin(LevelDbAdapter)
addRxPlugin(RxDBAjvValidatePlugin)
addRxPlugin(RxDBMigrationPlugin)
addRxPlugin(RxDBServerPlugin)
addRxPlugin(RxDBLeaderElectionPlugin)
addRxPlugin(RxDBQueryBuilderPlugin)
addRxPlugin(RxDBUpdatePlugin)
addRxPlugin(RxDBReplicationCouchDBPlugin)
let db: RxDatabase<Collections>
export const getMainDb = () => {
if (!db) {
throw new Error('No available database.')
}
return db
}
export const getDocumentCollection = (): DocumentsRxCol => {
return db[collectionNames.getCollectionDocumentsName()]
}
export const getSettingsCollection = (): SettingsRxCol => {
return db[collectionNames.getCollectionSettingsName()]
}
export const getProductsCollection = (): ProductsRxCol => {
return db[collectionNames.getCollectionProductsName()]
}
export const initDatabase = async () => {
console.log(logPathAlias, 'initDatabase')
if (db) {
console.warn(logPathAlias, 'db instance already created!')
return db
}
db = await createRxDatabase<Collections>({
name: `${electronApp.getPath('userData')}/db`,
storage: getRxStoragePouch(LevelDown),
})
const productsName = collectionNames.getCollectionProductsName()
const documentsName = collectionNames.getCollectionDocumentsName()
const settingsName = collectionNames.getCollectionSettingsName()
await initCommonCollections({ db, productsName, documentsName, settingsName })
await syncCollections([productsName, documentsName, settingsName])
db.$.subscribe(({ operation, documentId, documentData }) => {
// if (documentData.type === SettingsTypes.DEVICE_SETTING) {
console.log(`Change database NODE event:\n ${operation}, \n documentData:`, documentData)
// }
})
const { app } = await db.server({
startServer: false, // (optional), start express server
// options of the pouchdb express server
cors: false,
pouchdbExpressOptions: {
inMemoryConfig: true, // do not write a config.json
logPath: `${electronApp.getPath('temp')}/rxdb-server.log`, // save logs in tmp folder
},
})
return app
}
const lastRetryTime = {}
const syncCollections = async (collections: CollectionNames[]) => {
collections.map(collectionName => {
const rxReplicationState = db.collections[collectionName].syncCouchDB({
remote: `${CouchDbServerUrl}/${collectionName}`,
options: {
live: true,
retry: true,
// @ts-ignore
// headers: {
// Authorization: `Bearer ${getAccessToken()}`,
// },
},
})
rxReplicationState.error$.subscribe(async error => {
console.error(logPathAlias, collectionName, String(error))
if (error.status === 401 && dayjs().diff(lastRetryTime[collectionName], 'seconds') > 10 && getIsRefreshFresh()) {
lastRetryTime[collectionName] = dayjs()
await rxReplicationState.cancel()
await refreshTokens()
await syncCollections([collectionName])
}
})
})
}
No errors
Moreover, if you save data in a remote database, then they are synchronized with the node
Help me :(
Upvotes: 3
Views: 530