tutorial/nodejs/NodeClientPromise.js

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

var thrift = require("thrift");
var Calculator = require("./gen-nodejs/Calculator");
var ttypes = require("./gen-nodejs/tutorial_types");
const assert = require("assert");

var transport = thrift.TBufferedTransport;
var protocol = thrift.TBinaryProtocol;

var connection = thrift.createConnection("localhost", 9090, {
  transport: transport,
  protocol: protocol,
});

connection.on("error", function (err) {
  assert(false, err);
});

// Create a Calculator client with the connection
var client = thrift.createClient(Calculator, connection);

client.ping().then(function () {
  console.log("ping()");
});

client.add(1, 1).then(function (response) {
  console.log("1+1=" + response);
});

work = new ttypes.Work();
work.op = ttypes.Operation.DIVIDE;
work.num1 = 1;
work.num2 = 0;

client
  .calculate(1, work)
  .then(function (message) {
    console.log("Whoa? You know how to divide by zero?");
  })
  .catch(function (err) {
    console.log("InvalidOperation " + err);
  });

work.op = ttypes.Operation.SUBTRACT;
work.num1 = 15;
work.num2 = 10;

client
  .calculate(1, work)
  .then(function (value) {
    console.log("15-10=" + value);
    return client.getStruct(1);
  })
  .then(function (message) {
    console.log("Check log: " + message.value);
  })
  .finally(function () {
    //close the connection once we're done
    connection.end();
  });