@strapi/data-transfer/dist/strapi/providers/remote-destination/index.mjs.map

Data transfer capabilities for Strapi

{"version":3,"file":"index.mjs","sources":["../../../../src/strapi/providers/remote-destination/index.ts"],"sourcesContent":["import { randomUUID } from 'crypto';\nimport { Writable } from 'stream';\nimport { WebSocket } from 'ws';\nimport { once } from 'lodash/fp';\nimport type { Struct, Utils } from '@strapi/types';\n\nimport { createDispatcher, connectToWebsocket, trimTrailingSlash } from '../utils';\n\nimport type {\n  IDestinationProvider,\n  IMetadata,\n  ProviderType,\n  IAsset,\n  TransferStage,\n  Protocol,\n} from '../../../../types';\nimport type { IDiagnosticReporter } from '../../../utils/diagnostic';\nimport type { Client, Server, Auth } from '../../../../types/remote/protocol';\nimport type { ILocalStrapiDestinationProviderOptions } from '../local-destination';\nimport { TRANSFER_PATH } from '../../remote/constants';\nimport { ProviderTransferError, ProviderValidationError } from '../../../errors/providers';\n\nexport interface IRemoteStrapiDestinationProviderOptions\n  extends Pick<ILocalStrapiDestinationProviderOptions, 'restore' | 'strategy'> {\n  url: URL; // the url of the remote Strapi admin\n  auth?: Auth.ITransferTokenAuth;\n  retryMessageOptions?: {\n    retryMessageTimeout: number; // milliseconds to wait for a response from a message\n    retryMessageMaxRetries: number; // max number of retries for a message before aborting transfer\n  };\n}\n\nconst jsonLength = (obj: object) => Buffer.byteLength(JSON.stringify(obj));\n\nclass RemoteStrapiDestinationProvider implements IDestinationProvider {\n  name = 'destination::remote-strapi';\n\n  type: ProviderType = 'destination';\n\n  options: IRemoteStrapiDestinationProviderOptions;\n\n  ws: WebSocket | null;\n\n  dispatcher: ReturnType<typeof createDispatcher> | null;\n\n  transferID: string | null;\n\n  stats!: { [TStage in Exclude<TransferStage, 'schemas'>]: { count: number } };\n\n  #diagnostics?: IDiagnosticReporter;\n\n  constructor(options: IRemoteStrapiDestinationProviderOptions) {\n    this.options = options;\n    this.ws = null;\n    this.dispatcher = null;\n    this.transferID = null;\n\n    this.resetStats();\n  }\n\n  private resetStats() {\n    this.stats = {\n      assets: { count: 0 },\n      entities: { count: 0 },\n      links: { count: 0 },\n      configuration: { count: 0 },\n    };\n  }\n\n  async initTransfer(): Promise<string> {\n    const { strategy, restore } = this.options;\n\n    const query = this.dispatcher?.dispatchCommand({\n      command: 'init',\n      params: { options: { strategy, restore }, transfer: 'push' },\n    });\n\n    const res = (await query) as Server.Payload<Server.InitMessage>;\n    if (!res?.transferID) {\n      throw new ProviderTransferError('Init failed, invalid response from the server');\n    }\n\n    this.resetStats();\n\n    return res.transferID;\n  }\n\n  #startStepOnce(stage: Client.TransferPushStep) {\n    return once(() => this.#startStep(stage));\n  }\n\n  async #startStep<T extends Client.TransferPushStep>(step: T) {\n    try {\n      await this.dispatcher?.dispatchTransferStep({ action: 'start', step });\n    } catch (e) {\n      if (e instanceof Error) {\n        return e;\n      }\n\n      if (typeof e === 'string') {\n        return new ProviderTransferError(e);\n      }\n\n      return new ProviderTransferError('Unexpected error');\n    }\n\n    this.stats[step] = { count: 0 };\n\n    return null;\n  }\n\n  async #endStep<T extends Client.TransferPushStep>(step: T) {\n    try {\n      const res = await this.dispatcher?.dispatchTransferStep<{\n        ok: boolean;\n        stats: Protocol.Client.Stats;\n      }>({\n        action: 'end',\n        step,\n      });\n\n      return { stats: res?.stats ?? null, error: null };\n    } catch (e) {\n      if (e instanceof Error) {\n        return { stats: null, error: e };\n      }\n\n      if (typeof e === 'string') {\n        return { stats: null, error: new ProviderTransferError(e) };\n      }\n\n      return { stats: null, error: new ProviderTransferError('Unexpected error') };\n    }\n  }\n\n  async #streamStep<T extends Client.TransferPushStep>(\n    step: T,\n    message: Client.GetTransferPushStreamData<T>\n  ) {\n    try {\n      if (step === 'assets') {\n        const assetMessage = message as Protocol.Client.TransferAssetFlow[];\n        this.stats[step].count += assetMessage.filter((data) => data.action === 'start').length;\n      } else {\n        this.stats[step].count += message.length;\n      }\n\n      await this.dispatcher?.dispatchTransferStep({ action: 'stream', step, data: message });\n    } catch (e) {\n      if (e instanceof Error) {\n        return e;\n      }\n\n      if (typeof e === 'string') {\n        return new ProviderTransferError(e);\n      }\n\n      return new ProviderTransferError('Unexpected error');\n    }\n\n    return null;\n  }\n\n  #writeStream(step: Exclude<Client.TransferPushStep, 'assets'>): Writable {\n    type Step = typeof step;\n\n    const batchSize = 1024 * 1024; // 1MB;\n    const startTransferOnce = this.#startStepOnce(step);\n\n    let batch = [] as Client.GetTransferPushStreamData<Step>;\n\n    const batchLength = () => jsonLength(batch);\n\n    return new Writable({\n      objectMode: true,\n\n      final: async (callback) => {\n        if (batch.length > 0) {\n          const streamError = await this.#streamStep(step, batch);\n\n          batch = [];\n\n          if (streamError) {\n            return callback(streamError);\n          }\n        }\n        const { error, stats } = await this.#endStep(step);\n\n        const { count } = this.stats[step];\n\n        if (stats && (stats.started !== count || stats.finished !== count)) {\n          callback(\n            new Error(\n              `Data missing: sent ${this.stats[step].count} ${step}, recieved ${stats.started} and saved ${stats.finished} ${step}`\n            )\n          );\n        }\n\n        callback(error);\n      },\n\n      write: async (chunk, _encoding, callback) => {\n        const startError = await startTransferOnce();\n        if (startError) {\n          return callback(startError);\n        }\n\n        batch.push(chunk);\n\n        if (batchLength() >= batchSize) {\n          const streamError = await this.#streamStep(step, batch);\n\n          batch = [];\n\n          if (streamError) {\n            return callback(streamError);\n          }\n        }\n\n        callback();\n      },\n    });\n  }\n\n  #reportInfo(message: string) {\n    this.#diagnostics?.report({\n      details: {\n        createdAt: new Date(),\n        message,\n        origin: 'remote-destination-provider',\n      },\n      kind: 'info',\n    });\n  }\n\n  async bootstrap(diagnostics?: IDiagnosticReporter): Promise<void> {\n    this.#diagnostics = diagnostics;\n    const { url, auth } = this.options;\n    const validProtocols = ['https:', 'http:'];\n\n    let ws: WebSocket;\n\n    if (!validProtocols.includes(url.protocol)) {\n      throw new ProviderValidationError(`Invalid protocol \"${url.protocol}\"`, {\n        check: 'url',\n        details: {\n          protocol: url.protocol,\n          validProtocols,\n        },\n      });\n    }\n    const wsProtocol = url.protocol === 'https:' ? 'wss:' : 'ws:';\n    const wsUrl = `${wsProtocol}//${url.host}${trimTrailingSlash(\n      url.pathname\n    )}${TRANSFER_PATH}/push`;\n\n    this.#reportInfo('establishing websocket connection');\n    // No auth defined, trying public access for transfer\n    if (!auth) {\n      ws = await connectToWebsocket(wsUrl, undefined, this.#diagnostics);\n    }\n\n    // Common token auth, this should be the main auth method\n    else if (auth.type === 'token') {\n      const headers = { Authorization: `Bearer ${auth.token}` };\n      ws = await connectToWebsocket(wsUrl, { headers }, this.#diagnostics);\n    }\n\n    // Invalid auth method provided\n    else {\n      throw new ProviderValidationError('Auth method not available', {\n        check: 'auth.type',\n        details: {\n          auth: auth.type,\n        },\n      });\n    }\n\n    this.#reportInfo('established websocket connection');\n\n    this.ws = ws;\n    const { retryMessageOptions } = this.options;\n\n    this.#reportInfo('creating dispatcher');\n    this.dispatcher = createDispatcher(this.ws, retryMessageOptions, (message: string) =>\n      this.#reportInfo(message)\n    );\n    this.#reportInfo('created dispatcher');\n\n    this.#reportInfo('initialize transfer');\n    this.transferID = await this.initTransfer();\n    this.#reportInfo(`initialized transfer ${this.transferID}`);\n\n    this.dispatcher.setTransferProperties({ id: this.transferID, kind: 'push' });\n\n    await this.dispatcher.dispatchTransferAction('bootstrap');\n  }\n\n  async close() {\n    // Gracefully close the remote transfer process\n    if (this.transferID && this.dispatcher) {\n      await this.dispatcher.dispatchTransferAction('close');\n\n      await this.dispatcher.dispatchCommand({\n        command: 'end',\n        params: { transferID: this.transferID },\n      });\n    }\n\n    await new Promise<void>((resolve) => {\n      const { ws } = this;\n\n      if (!ws || ws.CLOSED) {\n        resolve();\n        return;\n      }\n\n      ws.on('close', () => resolve()).close();\n    });\n  }\n\n  getMetadata() {\n    return this.dispatcher?.dispatchTransferAction<IMetadata>('getMetadata') ?? null;\n  }\n\n  async beforeTransfer() {\n    await this.dispatcher?.dispatchTransferAction('beforeTransfer');\n  }\n\n  async rollback() {\n    await this.dispatcher?.dispatchTransferAction('rollback');\n  }\n\n  getSchemas() {\n    if (!this.dispatcher) {\n      return Promise.resolve(null);\n    }\n\n    return this.dispatcher.dispatchTransferAction<Utils.String.Dict<Struct.Schema>>('getSchemas');\n  }\n\n  createEntitiesWriteStream(): Writable {\n    return this.#writeStream('entities');\n  }\n\n  createLinksWriteStream(): Writable {\n    return this.#writeStream('links');\n  }\n\n  createConfigurationWriteStream(): Writable {\n    return this.#writeStream('configuration');\n  }\n\n  createAssetsWriteStream(): Writable | Promise<Writable> {\n    let batch: Client.TransferAssetFlow[] = [];\n    let hasStarted = false;\n\n    const batchSize = 1024 * 1024; // 1MB;\n    const batchLength = () => {\n      return batch.reduce(\n        (acc, chunk) => (chunk.action === 'stream' ? acc + chunk.data.byteLength : acc),\n        0\n      );\n    };\n    const startAssetsTransferOnce = this.#startStepOnce('assets');\n\n    const flush = async () => {\n      const streamError = await this.#streamStep('assets', batch);\n      batch = [];\n      return streamError;\n    };\n\n    const safePush = async (chunk: Client.TransferAssetFlow) => {\n      batch.push(chunk);\n\n      if (batchLength() >= batchSize) {\n        const streamError = await flush();\n        if (streamError) {\n          throw streamError;\n        }\n      }\n    };\n\n    return new Writable({\n      objectMode: true,\n      final: async (callback) => {\n        if (batch.length > 0) {\n          await flush();\n        }\n\n        if (hasStarted) {\n          const { error: endStepError } = await this.#endStep('assets');\n\n          if (endStepError) {\n            return callback(endStepError);\n          }\n        }\n\n        return callback(null);\n      },\n\n      async write(asset: IAsset, _encoding, callback) {\n        const startError = await startAssetsTransferOnce();\n        if (startError) {\n          return callback(startError);\n        }\n\n        hasStarted = true;\n\n        const assetID = randomUUID();\n        const { filename, filepath, stats, stream, metadata } = asset;\n\n        try {\n          await safePush({\n            action: 'start',\n            assetID,\n            data: { filename, filepath, stats, metadata },\n          });\n\n          for await (const chunk of stream) {\n            await safePush({ action: 'stream', assetID, data: chunk });\n          }\n\n          await safePush({ action: 'end', assetID });\n\n          callback();\n        } catch (error) {\n          if (error instanceof Error) {\n            callback(error);\n  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