iexec-server-js-client

JS client lib to interact with iExec server REST API

Ressources

• The iExec server API doc: https://serverapi.iex.ec
• The iExec SDK
• The iExec main documentation: https://docs.iex.ec

Examples

Below are examples showcasing the use of the library in the most common worklow:

1. Create iExec client

iExec server URL:

• tesnet (ropsten / rinkeby / kovan): https://testxw.iex.ec:443
• mainnet: https://mainxw.iex.ec:443

const createIEXECClient = require('iexec-server-js-client');
const iexec = createIEXECClient({ server: 'https://testxw.iex.ec:443' });

2. Auth

Authenticate before hitting iExec API:

iexec.auth(web3.currentProvider, accountAddress).then(({ jwtoken, cookie }) => {
  console.log(jwtoken); // this is given by auth.iex.ec server
  console.log(cookie); // this is given by iExec server
  // hit iExec server API
  iexec.getAppByName(deployTxHash).then(console.log); // print app description from deploy txHash
  iexec.getWorkByExternalID(submitTxHash).then(console.log); // print work description from submit txHash
});

If you already have your JWT token, no need to do full auth (avoid wallet signing):

iexec.getCookieByJWT('my_jwt_token').then(cookie => {
  // hit iExec server API
  iexec.getByUID(workUID).then(console.log); // print work description
});

3. Submit a work

Call the dapp smart contract "iexecSubmit" method to submit a work (for reference only, not part of this repo library):

const oracleJSON = require('iexec-oracle-contract/build/contracts/IexecOracle.json');
const work = '{"cmdline":"10"}'

const oracleContract = web3.eth
  .contract(oracleJSON.abi)
  .at(oracleJSON.networks[chainID].address);
const callbackPrice = await oracleContract.callbackPrice();

const dappContract = web3.eth
  .contract(dappSubmitABI)
  .at(dappAddress);

// this is the work submit
const txHash = await dappContract.iexecSubmit(work, {
  value: callbackPrice[0].toNumber(),
});

4. Wait for work result

After submitting a work through Ethereum, use the transaction hash (txHash) to wait for the work result:

iexec
  .waitForWorkResult(oracleContract.getWork, txHash)
  .then(workResultURI => iexec.createDownloadURI(workResultURI))
  .then(console.log); // let user open this URL in the browser to download the work result