@tbd54566975/dwn-proxy-js/dist/esm/main.mjs.map

Bidirectional proxy between DWM's <> RESTful

{
  "version": 3,
  "sources": ["../../src/dwn-http-client.ts", "../../src/dwn-json-rpc.ts", "../../src/dwn-http-server.ts", "../../src/dwn-did.ts", "../../src/dwn-proxy.ts"],
  "sourcesContent": ["import { RecordsWriteMessage } from '@tbd54566975/dwn-sdk-js'\nimport { DidIonApi, DwnServiceEndpoint } from '@tbd54566975/dids'\nimport { createRequest, parseResponse } from './dwn-json-rpc.js'\nimport { DwnResponse } from './dwn-types.js'\n\nexport class DwnHttpClient {\n  // TODO did resolver cache member variable\n\n  #resolveEndpoint = async (did: string): Promise<string> => {\n    // TODO use resolver cache\n    const doc = (await new DidIonApi().resolve(did)).didDocument\n    if (!doc) throw new Error() // TODO\n    const service = doc.service?.find(x => x.type === 'DecentralizedWebNode')\n    if (!service) throw new Error() // TODO\n    return (service.serviceEndpoint as DwnServiceEndpoint).nodes[0]\n  }\n\n  send = async (target: string, message: RecordsWriteMessage, payload?: string): Promise<DwnResponse> => {\n    const endpoint = await this.#resolveEndpoint(target)\n\n    const fetchOpts = {\n      method  : 'POST',\n      headers : {\n        'dwn-request': JSON.stringify(createRequest(target, message))\n      }\n    }\n    if (payload) {\n      fetchOpts.headers['content-type'] = 'application/octet-stream'\n      fetchOpts['body'] = payload\n    }\n\n    const res =  await fetch(endpoint, fetchOpts)\n\n    let dwnResponse: DwnResponse\n    if (res.headers.has('dwn-response'))\n      dwnResponse = parseResponse(JSON.parse(res.headers.get('dwn-response')))\n    else\n      dwnResponse = parseResponse(JSON.parse(await res.text()))\n\n    return dwnResponse\n  }\n}", "import type { DwnMessage, DwnRequest, DwnResponse } from './dwn-types.js'\n\nexport type JsonRpcId = string | number | null\nexport type JsonRpcParams = DwnRequest // todo\nexport type JsonRpcVersion = '2.0'\n\nexport interface JsonRpcRequest {\n  jsonrpc: JsonRpcVersion\n  id?: JsonRpcId\n  method: string\n  params?: JsonRpcParams\n}\n\nexport interface JsonRpcResponse {\n  jsonrpc: JsonRpcVersion\n  id: JsonRpcId\n  result: any\n  error?: undefined\n}\n\nexport const parseRequest = (req: JsonRpcRequest): DwnRequest => {\n  return req.params\n}\n\nexport const createRequest = (target: string, message: DwnMessage): JsonRpcRequest => {\n  return {\n    jsonrpc : '2.0',\n    id      : '', // TODO\n    method  : 'dwn.processMessage',\n    params  : {\n      target,\n      message\n    }\n  }\n}\n\nexport const parseResponse = (res: JsonRpcResponse): DwnResponse => {\n  return res.result\n}\n\nexport const createResponse = (res: DwnResponse): JsonRpcResponse => {\n  return {\n    jsonrpc : '2.0',\n    id      : '',\n    result  : {\n      reply: res.reply\n    }\n  }\n}", "import express from 'express'\nimport type { Express, Request, Response } from 'express'\nimport cors from 'cors'\nimport { DwnRequest, DwnResponse } from './dwn-types.js'\nimport { Dwn } from '@tbd54566975/dwn-sdk-js'\nimport { parseRequest, createResponse } from './dwn-json-rpc.js'\n\nexport interface IHandler {\n  (req: DwnRequest): Promise<DwnResponse | void>\n}\n\ntype Options = {\n  dwn: Dwn\n  handler?: (req: DwnRequest) => Promise<DwnResponse | void>\n  // [kw] can parameterize the json-rpc parsing\n}\n\nexport const readReq = async <T = any>(req: Request): Promise<T | void> => {\n  let chunks = ''\n  for await (const chunk of req) chunks += chunk\n  if (chunks) return JSON.parse(chunks)\n}\n\nexport class DwnHttpServer {\n  #options: Options\n  api: Express\n\n  constructor(options: Options) {\n    this.#options = options\n    this.api = express()\n\n    this.api.use(cors({ exposedHeaders: 'dwn-response' }))\n    this.api.get('/health', (_, res) => res.json({ ok: true }))\n\n    this.api.get('/', (_req, res) => {\n      // return a plain text string\n      res.setHeader('content-type', 'text/plain')\n      return res.send('please use a web5 client, for example: https://github.com/TBD54566975/web5-js ')\n    })\n\n    this.api.post('/', async (req: Request, res: Response) => {\n      try {\n        let dwnRequest: DwnRequest\n        try {\n          dwnRequest = parseRequest(JSON.parse(req.headers['dwn-request'] as string))\n          if (!dwnRequest.payload) {\n            const contentLength = req.headers['content-length']\n            const transferEncoding = req.headers['transfer-encoding']\n            const requestDataStream = (parseInt(contentLength) > 0 || transferEncoding !== undefined) ? req : undefined\n            dwnRequest.payload = requestDataStream\n          }\n        } catch (err) {\n          // todo integrate w/ web5-js expected response\n          console.error('Failed to parse client request', err)\n          res.status(400).end(err.message)\n          return\n        }\n\n        const dwnResponse = this.#options.handler ? await this.#options.handler(dwnRequest) : undefined\n\n        if (!dwnResponse) {\n          const reply = await this.#options.dwn.processMessage(dwnRequest.target, dwnRequest.message, dwnRequest.payload as any)\n          res.json(reply)\n        } else if (dwnResponse.payload) {\n          res.setHeader('content-type', 'application/octet-stream')\n          res.setHeader('dwn-response', JSON.stringify(createResponse(dwnResponse)))\n          dwnResponse.payload.pipe(res)\n        } else {\n          res.json(createResponse(dwnResponse))\n        }\n      } catch (err) {\n        // todo integrate w/ web5-js expected response\n        console.error('Failed to process message', err)\n        res.status(500).end(err.message)\n        return\n      }\n    })\n  }\n\n  listen = (port: number, callback?: () => void) => this.api.listen(port, callback)\n}", "import { DidIonApi } from '@tbd54566975/dids'\nimport { DidStateWithSignatureInput } from './dwn-types.js'\n\nexport const generateDidState = async (endpoint: string): Promise<DidStateWithSignatureInput> => {\n  const didState = await new DidIonApi().create({\n    services: [{\n      id              : 'dwn',\n      type            : 'DecentralizedWebNode',\n      serviceEndpoint : {\n        nodes: [ endpoint ]\n      }\n    }]\n  })\n\n  console.log(`Created DID & hosting service endpoint at ${endpoint}`)\n  console.log(didState.id)\n\n  const { keys } = didState\n  const [ key ] = keys\n  const { privateKeyJwk } = key\n  const kidFragment = privateKeyJwk.kid || key.id\n  const kid = `${didState.id}#${kidFragment}`\n  return {\n    ...didState,\n    signatureInput: {\n      privateJwk      : privateKeyJwk,\n      protectedHeader : { alg: privateKeyJwk.crv, kid }\n    }\n  }\n}", "import { DwnHttpClient } from './dwn-http-client.js'\nimport { DwnHttpServer, readReq } from './dwn-http-server.js'\nimport { generateDidState } from './dwn-did.js'\nimport type { DwnRequest, DwnResponse, DidStateWithSignatureInput } from './dwn-types.js'\nimport { Dwn } from '@tbd54566975/dwn-sdk-js'\n\ninterface IMatch {\n  (req: DwnRequest): boolean\n}\ninterface IHandler {\n  (dwnRequest: DwnRequest): Promise<void | DwnResponse>\n}\ninterface IMatchHandler {\n  match: IMatch\n  handler: IHandler\n}\n\nexport type DwnProxyOptions = Partial<{\n  serviceEndpoint: string\n  didState: DidStateWithSignatureInput\n}>\n\nexport class DwnProxy {\n  options: DwnProxyOptions\n  server: DwnHttpServer\n  client: DwnHttpClient\n  dwn: Dwn\n  #handlers: Array<IMatchHandler> = []\n\n  constructor(options: DwnProxyOptions) {\n    this.options = options\n  }\n\n  #inbound = async (request: DwnRequest): Promise<DwnResponse | void> => {\n    // [kw] could use a has map of sorts instead of iterating every time\n    for (const { match, handler } of this.#handlers) {\n      const isMatch = match(request)\n      if (isMatch) {\n        if (request.payload) // go ahead and read the payload into an object\n          request.payload = await readReq(request.payload)\n        return await handler(request)\n      }\n    }\n\n    throw new Error('Unable to find middleware')\n  }\n\n  addHandler = (match: IMatch, handler: IHandler) => this.#handlers.push({ match, handler })\n\n  async listen(port: number) {\n    if (!this.options.didState)\n      this.options.didState = await generateDidState(this.options.serviceEndpoint ?? `http://0.0.0.0:${port}`)\n\n    this.dwn = await Dwn.create()\n\n    this.server = new DwnHttpServer({\n      dwn     : this.dwn,\n      handler : this.#inbound\n    })\n\n    this.server.listen(port, () => {\n      console.log(`server listening on port ${port}`)\n    })\n\n    this.client = new DwnHttpClient()\n  }\n}"],
  "mappings": ";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AACA,SAAS,iBAAqC;;;ACmBvC,IAAM,eAAe,CAAC,QAAoC;AAC/D,SAAO,IAAI;AACb;AAEO,IAAM,gBAAgB,CAAC,QAAgB,YAAwC;AACpF,SAAO;AAAA,IACL,SAAU;AAAA,IACV,IAAU;AAAA;AAAA,IACV,QAAU;AAAA,IACV,QAAU;AAAA,MACR;AAAA,MACA;AAAA,IACF;AAAA,EACF;AACF;AAEO,IAAM,gBAAgB,CAAC,QAAsC;AAClE,SAAO,IAAI;AACb;AAEO,IAAM,iBAAiB,CAAC,QAAsC;AACnE,SAAO;AAAA,IACL,SAAU;AAAA,IACV,IAAU;AAAA,IACV,QAAU;AAAA,MACR,OAAO,IAAI;AAAA,IACb;AAAA,EACF;AACF;;;ADhDA;AAKO,IAAM,gBAAN,MAAoB;AAAA,EAApB;AAGL;AAAA,yCAAmB,OAAO,QAAiC;AAR7D;AAUI,YAAM,OAAO,MAAM,IAAI,UAAU,EAAE,QAAQ,GAAG,GAAG;AACjD,UAAI,CAAC;AAAK,cAAM,IAAI,MAAM;AAC1B,YAAM,WAAU,SAAI,YAAJ,mBAAa,KAAK,OAAK,EAAE,SAAS;AAClD,UAAI,CAAC;AAAS,cAAM,IAAI,MAAM;AAC9B,aAAQ,QAAQ,gBAAuC,MAAM,CAAC;AAAA,IAChE;AAEA,gBAAO,OAAO,QAAgB,SAA8B,YAA2C;AACrG,YAAM,WAAW,MAAM,mBAAK,kBAAL,WAAsB;AAE7C,YAAM,YAAY;AAAA,QAChB,QAAU;AAAA,QACV,SAAU;AAAA,UACR,eAAe,KAAK,UAAU,cAAc,QAAQ,OAAO,CAAC;AAAA,QAC9D;AAAA,MACF;AACA,UAAI,SAAS;AACX,kBAAU,QAAQ,cAAc,IAAI;AACpC,kBAAU,MAAM,IAAI;AAAA,MACtB;AAEA,YAAM,MAAO,MAAM,MAAM,UAAU,SAAS;AAE5C,UAAI;AACJ,UAAI,IAAI,QAAQ,IAAI,cAAc;AAChC,sBAAc,cAAc,KAAK,MAAM,IAAI,QAAQ,IAAI,cAAc,CAAC,CAAC;AAAA;AAEvE,sBAAc,cAAc,KAAK,MAAM,MAAM,IAAI,KAAK,CAAC,CAAC;AAE1D,aAAO;AAAA,IACT;AAAA;AACF;AAjCE;;;AERF,OAAO,aAAa;AAEpB,OAAO,UAAU;AAeV,IAAM,UAAU,OAAgB,QAAoC;AACzE,MAAI,SAAS;AACb;AAAA,+BAA0B,MAA1B,0EAA+B;AAApB,YAAM,QAAjB;AAA+B,gBAAU;AAAA;AAAA,WAAzC;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AACA,MAAI;AAAQ,WAAO,KAAK,MAAM,MAAM;AACtC;AArBA;AAuBO,IAAM,gBAAN,MAAoB;AAAA,EAIzB,YAAY,SAAkB;AAH9B;AAuDA,kBAAS,CAAC,MAAc,aAA0B,KAAK,IAAI,OAAO,MAAM,QAAQ;AAnD9E,uBAAK,UAAW;AAChB,SAAK,MAAM,QAAQ;AAEnB,SAAK,IAAI,IAAI,KAAK,EAAE,gBAAgB,eAAe,CAAC,CAAC;AACrD,SAAK,IAAI,IAAI,WAAW,CAAC,GAAG,QAAQ,IAAI,KAAK,EAAE,IAAI,KAAK,CAAC,CAAC;AAE1D,SAAK,IAAI,IAAI,KAAK,CAAC,MAAM,QAAQ;AAE/B,UAAI,UAAU,gBAAgB,YAAY;AAC1C,aAAO,IAAI,KAAK,gFAAgF;AAAA,IAClG,CAAC;AAED,SAAK,IAAI,KAAK,KAAK,OAAO,KAAc,QAAkB;AACxD,UAAI;AACF,YAAI;AACJ,YAAI;AACF,uBAAa,aAAa,KAAK,MAAM,IAAI,QAAQ,aAAa,CAAW,CAAC;AAC1E,cAAI,CAAC,WAAW,SAAS;AACvB,kBAAM,gBAAgB,IAAI,QAAQ,gBAAgB;AAClD,kBAAM,mBAAmB,IAAI,QAAQ,mBAAmB;AACxD,kBAAM,oBAAqB,SAAS,aAAa,IAAI,KAAK,qBAAqB,SAAa,MAAM;AAClG,uBAAW,UAAU;AAAA,UACvB;AAAA,QACF,SAAS,KAAP;AAEA,kBAAQ,MAAM,kCAAkC,GAAG;AACnD,cAAI,OAAO,GAAG,EAAE,IAAI,IAAI,OAAO;AAC/B;AAAA,QACF;AAEA,cAAM,cAAc,mBAAK,UAAS,UAAU,MAAM,mBAAK,UAAS,QAAQ,UAAU,IAAI;AAEtF,YAAI,CAAC,aAAa;AAChB,gBAAM,QAAQ,MAAM,mBAAK,UAAS,IAAI,eAAe,WAAW,QAAQ,WAAW,SAAS,WAAW,OAAc;AACrH,cAAI,KAAK,KAAK;AAAA,QAChB,WAAW,YAAY,SAAS;AAC9B,cAAI,UAAU,gBAAgB,0BAA0B;AACxD,cAAI,UAAU,gBAAgB,KAAK,UAAU,eAAe,WAAW,CAAC,CAAC;AACzE,sBAAY,QAAQ,KAAK,GAAG;AAAA,QAC9B,OAAO;AACL,cAAI,KAAK,eAAe,WAAW,CAAC;AAAA,QACtC;AAAA,MACF,SAAS,KAAP;AAEA,gBAAQ,MAAM,6BAA6B,GAAG;AAC9C,YAAI,OAAO,GAAG,EAAE,IAAI,IAAI,OAAO;AAC/B;AAAA,MACF;AAAA,IACF,CAAC;AAAA,EACH;AAGF;AAxDE;;;ACxBF,SAAS,aAAAA,kBAAiB;AAGnB,IAAM,mBAAmB,OAAO,aAA0D;AAC/F,QAAM,WAAW,MAAM,IAAIC,WAAU,EAAE,OAAO;AAAA,IAC5C,UAAU,CAAC;AAAA,MACT,IAAkB;AAAA,MAClB,MAAkB;AAAA,MAClB,iBAAkB;AAAA,QAChB,OAAO,CAAE,QAAS;AAAA,MACpB;AAAA,IACF,CAAC;AAAA,EACH,CAAC;AAED,UAAQ,IAAI,6CAA6C,UAAU;AACnE,UAAQ,IAAI,SAAS,EAAE;AAEvB,QAAM,EAAE,KAAK,IAAI;AACjB,QAAM,CAAE,GAAI,IAAI;AAChB,QAAM,EAAE,cAAc,IAAI;AAC1B,QAAM,cAAc,cAAc,OAAO,IAAI;AAC7C,QAAM,MAAM,GAAG,SAAS,MAAM;AAC9B,SAAO,iCACF,WADE;AAAA,IAEL,gBAAgB;AAAA,MACd,YAAkB;AAAA,MAClB,iBAAkB,EAAE,KAAK,cAAc,KAAK,IAAI;AAAA,IAClD;AAAA,EACF;AACF;;;ACzBA,SAAS,WAAW;AAJpB;AAsBO,IAAM,WAAN,MAAe;AAAA,EAOpB,YAAY,SAA0B;AAFtC,kCAAkC,CAAC;AAMnC,iCAAW,OAAO,YAAqD;AAErE,iBAAW,EAAE,OAAO,QAAQ,KAAK,mBAAK,YAAW;AAC/C,cAAM,UAAU,MAAM,OAAO;AAC7B,YAAI,SAAS;AACX,cAAI,QAAQ;AACV,oBAAQ,UAAU,MAAM,QAAQ,QAAQ,OAAO;AACjD,iBAAO,MAAM,QAAQ,OAAO;AAAA,QAC9B;AAAA,MACF;AAEA,YAAM,IAAI,MAAM,2BAA2B;AAAA,IAC7C;AAEA,sBAAa,CAAC,OAAe,YAAsB,mBAAK,WAAU,KAAK,EAAE,OAAO,QAAQ,CAAC;AAjBvF,SAAK,UAAU;AAAA,EACjB;AAAA,EAkBA,MAAM,OAAO,MAAc;AAjD7B;AAkDI,QAAI,CAAC,KAAK,QAAQ;AAChB,WAAK,QAAQ,WAAW,MAAM,kBAAiB,UAAK,QAAQ,oBAAb,YAAgC,kBAAkB,MAAM;AAEzG,SAAK,MAAM,MAAM,IAAI,OAAO;AAE5B,SAAK,SAAS,IAAI,cAAc;AAAA,MAC9B,KAAU,KAAK;AAAA,MACf,SAAU,mBAAK;AAAA,IACjB,CAAC;AAED,SAAK,OAAO,OAAO,MAAM,MAAM;AAC7B,cAAQ,IAAI,4BAA4B,MAAM;AAAA,IAChD,CAAC;AAED,SAAK,SAAS,IAAI,cAAc;AAAA,EAClC;AACF;AAvCE;AAMA;",
  "names": ["DidIonApi", "DidIonApi"]
}