test-triam-base-contract/lib/contract_base/utils.js

Low level triam smart cotnract support library

'use strict';

var http = require('http');
var ab2str = function ab2str(buf) {
  return String.fromCharCode.apply(null, new Uint16Array(buf));
};

var str2ab = function str2ab(str) {
  var buf = new ArrayBuffer(str.length * 2); // 2 bytes for each char
  var bufView = new Uint16Array(buf);
  for (var i = 0, strLen = str.length; i < strLen; i++) {
    bufView[i] = str.charCodeAt(i);
  }
  return buf;
};

var toArrayBuffer = function toArrayBuffer(buf) {
  var ab = new ArrayBuffer(buf.length);
  var view = new Uint8Array(ab);
  for (var i = 0; i < buf.length; ++i) {
    view[i] = buf[i];
  }
  return ab;
};
var toBuffer = function toBuffer(ab) {
  var buf = new Buffer(ab.byteLength);
  var view = new Uint8Array(ab);
  for (var i = 0; i < buf.length; ++i) {
    buf[i] = view[i];
  }
  return buf;
};

var getBalance = function getBalance(_account) {
  return new Promise(function (resolve, reject) {
    http.get('http://' + process.env['HOST'] + ':' + process.env['PORT'] + '/balance?id=' + _account, function (res) {
      var statusCode = res.statusCode;

      var contentType = res.headers['content-type'];

      var error = void 0;
      if (statusCode !== 200) {
        error = new Error('Request Failed.\n' + ('Status Code: ' + statusCode));
      } else if (!/^application\/json/.test(contentType)) {
        error = new Error('Invalid content-type.\n' + ('Expected application/json but received ' + contentType));
      }
      if (error) {
        // consume response data to free up memory
        res.resume();
        return;
      }

      res.setEncoding('utf8');
      var rawData = '';
      res.on('data', function (chunk) {
        rawData += chunk;
      });
      res.on('end', function () {
        try {
          var parsedData = JSON.parse(rawData);
          resolve(parsedData);
        } catch (e) {
          // console.error(e.message);
          reject(e.message);
        }
      });
    });
  });
};

var getLedgerSeq = function getLedgerSeq() {
  return new Promise(function (resolve, reject) {
    http.get('http://' + process.env['HOST'] + ':' + process.env['PORT'] + '/ledger', function (res) {
      var statusCode = res.statusCode;

      var contentType = res.headers['content-type'];

      var error = void 0;
      if (statusCode !== 200) {
        error = new Error('Request Failed.\n' + ('Status Code: ' + statusCode));
      } else if (!/^application\/json/.test(contentType)) {
        error = new Error('Invalid content-type.\n' + ('Expected application/json but received ' + contentType));
      }
      if (error) {
        // consume response data to free up memory
        res.resume();
        return;
      }

      res.setEncoding('utf8');
      var rawData = '';
      res.on('data', function (chunk) {
        rawData += chunk;
      });
      res.on('end', function () {
        try {
          var parsedData = JSON.parse(rawData);
          resolve(parsedData);
        } catch (e) {
          // console.error(e.message);
          reject(e.message);
        }
      });
    });
  });
};

var getState = function getState(_account) {
  return new Promise(function (resolve, reject) {
    http.get('http://' + process.env['HOST'] + ':' + process.env['PORT'] + '/state?id=' + _account, function (res) {
      var statusCode = res.statusCode;

      var contentType = res.headers['content-type'];

      var error = void 0;
      if (statusCode !== 200) {
        error = new Error('Request Failed.\n' + ('Status Code: ' + statusCode));
      } else if (!/^application\/json/.test(contentType)) {
        error = new Error('Invalid content-type.\n' + ('Expected application/json but received ' + contentType));
      }
      if (error) {
        // consume response data to free up memory
        res.resume();
        return;
      }

      res.setEncoding('utf8');
      var rawData = '';
      res.on('data', function (chunk) {
        rawData += chunk;
      });
      res.on('end', function () {
        try {
          var parsedData = JSON.parse(rawData);
          resolve(parsedData);
        } catch (e) {
          // console.error(e.message);
          reject(e.message);
        }
      });
    });
  });
};

module.exports = {
  ab2str: ab2str,
  str2ab: str2ab,
  toArrayBuffer: toArrayBuffer,
  toBuffer: toBuffer,
  getState: getState,
  getBalance: getBalance,
  getLedgerSeq: getLedgerSeq
};
// getBalance('CBF3V5UX5E5KXVM73FNWPQH5OPJXBTH7IEUGKW5OUCA2SGFHHEP3JJ2N').then(data => console.log('data', data)).catch(err => console.log(err));