patent search client

patent-search-client.js

//A simple node client that consume dummy patent search service.

var http = require('http');

//Search query parameters. Only two optional parameters are used.
var post_data = JSON.stringify( {
  "keywords": [
    "bluetooth", "beacon", "rfid"
  ],
  "dateFrom": "20140101",
  "dateTo": "20161231"
});

//Set the options for the POST request.
var options = {
  hostname: 'dummy-patents.eu-gb.mybluemix.net',
  port: 80,
  path: '/patent-search',
  method: 'POST',
  headers: {
    "Content-Type": "application/json",
    "Content-Length": Buffer.byteLength(post_data)
  }  
};

post_req = http.request(options, function (res) {
    console.log('STATUS: ' + res.statusCode);
    console.log('HEADERS: ' + JSON.stringify(res.headers));
    res.setEncoding('utf8');
    var responseBody = '';
    res.on('data', function (chunk) {
        responseBody += chunk;
    });

    res.on('end', function () {
        patentArray = JSON.parse(responseBody);
        console.log('Got ' + patentArray.length + ' patents');
        for(var i = 0; i < patentArray.length; i++) {
          console.log('Patent ID' + patentArray[i].patentId);
          console.log('Patent Title' + patentArray[i].title);
          //Parse rest of the data as needed
        }
    });

});

post_req.on('error', function(e) {
    console.log('A problem with request: ' + e.message);
});

//perform the request
post_req.write(post_data);
post_req.end();