Ripple-lib を用いた基本的動作

Ripple-lib を用いた基本的な動作を確認する。

• アカウント照会
• トランザクション取得
• 送金処理

●残高取得(getAccountInfo)

const RippleAPI = require('ripple-lib').RippleAPI;
 
const api = new RippleAPI({
  server: 'wss://s.altnet.rippletest.net:51233' // TestNet rippled server
});
 
run().catch(error => console.error(error.stack));
 
async function run() {
  await api.connect();
  const myAddress = 'rfQEB**************************';
  console.log('getting account info for', myAddress);
  const res = await api.getAccountInfo(myAddress);
  console.log('Done', res);
  process.exit(0);
}

getting account info for rfQEB**************************
Done { sequence: 1,
  xrpBalance: '10000',
  ownerCount: 0,
  previousAffectingTransactionID:
   '35EED****************************************************',
  previousAffectingTransactionLedgerVersion: 16090000 }

●トランザクション取得(getTransaction)

const RippleAPI = require('ripple-lib').RippleAPI;

const api = new RippleAPI({
  server: 'wss://s.altnet.rippletest.net:51233' // TestNet rippled server
});

run().catch(error => console.error(error.stack));

async function run() {
  await api.connect();
  const transactionid = '35EED****************************************************',
  console.log('getting transaction info for', transactionid);
  const res = await api.getTransaction(transactionid);
  console.log('Done', res);
  process.exit(0);
}

getting transaction info for 35EED****************************************************'
Done { type: 'payment',
  address: 'rfQEB**************************',
  sequence: 1,
  id:
   '35EED****************************************************',
  specification:
   { source:
      { address: 'rfQEB**************************',
        maxAmount: [Object] },
     destination: { address: 'rhko3**************************' } },
  outcome:
   { result: 'tesSUCCESS',
     timestamp: '2019-01-01T01:25:40.000Z',
     fee: '0.000012',
     balanceChanges:
      { rhko3**************************: [Array],
        rfQEB**************************: [Array] },
     orderbookChanges: {},
     ledgerVersion: 16120000,
     indexInLedger: 1,
     deliveredAmount: { currency: 'XRP', value: '10' } } }

●送金処理

const RippleAPI = require('ripple-lib').RippleAPI;
 
const api = new RippleAPI({
  server: 'wss://s.altnet.rippletest.net:51233' // TestNet rippled server
});
 
run().catch(error => console.error(error.stack));
 
async function run() {
 
  await api.connect();
  const myAddress = 'rfQEB**************************';
  const sendAddress = 'rhko3**************************'
  const secretkey = 'sso39**************************'
  
  const payment = {
    source: {
      address: myAddress,
      maxAmount: {
        value: '50.00',
        currency: 'XRP'
      }
    },
    destination: {
      address: sendAddress,
      amount: {
        value: '50.00',
        currency: 'XRP'
      }
    }
  };
  
  console.log('Get ready to submit the payment');
  const prepared = await api.preparePayment(myAddress, payment, {
    maxLedgerVersionOffset: 5
  });
  
  console.log('Sign the payment using the senders secret');
  const { signedTransaction } = api.sign(prepared.txJSON, secretkey);
  console.log('Signed', signedTransaction)
  
  // Submit the payment
  const res = await api.submit(signedTransaction);
  console.log('Done', res);
  process.exit(0);
}

Get ready to submit the payment
Sign the payment using the senders secret
Signed 120000******************************************************************************************
Done { resultCode: 'tesSUCCESS',
  resultMessage:
   'The transaction was applied. Only final in a validated ledger.',
  engine_result: 'tesSUCCESS',
  engine_result_code: 0,
  engine_result_message:
   'The transaction was applied. Only final in a validated ledger.',
  tx_blob:
   '120000******************************************************************************************',
  tx_json:
   { Account: 'rfQEB**************************',
     Amount: '10000000',
     Destination: 'rhko3**************************',
     Fee: '12',
     Flags: 2147000000,
     LastLedgerSequence: 16120000,
     Sequence: 1,
     SigningPubKey:
      '03A0B****************************************************',
     TransactionType: 'Payment',
     TxnSignature:
      '30450****************************************************',
     hash:
      '0CF9A****************************************************' } }

Ripple-libを用いることで、WEB、またはアプリケーションから残高照会やトランザクションの取得、送金などの機能を実装することが可能となります。