Unable to connect Rest API using node.js with Apigee Edge Cloud version

[#1]

Error in Node.js script: "connect EINVAL": null

Please find below the code:

var http = require('http');

var https = require('https');

var url = require('url');

url = "http://maps.googleapis.com/maps/api/directions/json?origin=Central Park&destination=Empire State Building&sensor=false&mode=walking";

var querystring = require('querystring');

var apigee = require('apigee-access');

var chunk = '';

var resultJSON = '';

var result = ''; http.createServer(function(req, res) { res.writeHead(200, { 'Content-Type' : 'application/json' }); try { callLocationAPI(req, res); } catch (e) { console.log("Error:", e.message); res.end("Try again later", e.message); } }).listen(6868, '127.0.0.1'); console.log('Server running at http://127.0.0.1:6868/'); function getCoordinates(mainreq, mainres) { // https://apidev1.testcoke.com/tccc-googlemaps-geocode-version-1 // ?address={Street Address}, {City}, {State} var routePath = mainreq.url; //routePath = routePath.replace("/", ""); //routePath = routePath.replace(",", ""); var options = { path : routePath, method : 'GET' }; console.log('Query String is ' + routePath); var req = https.request(options); req.on('response', function(response) { response.setEncoding('utf8'); response.on('data', function(chunk) { }); response.on('end', function() { }); }); req.on('error', function(e) { console.log('problem with request: ' + e.message); }); req.end(); }

[nmallesh]

Kindly use the code tab to populate the code snippet. It eases readability.

[nmallesh]

Please confirm if below is the node script in your file.

var result = '';
http.createServer(function(req, res) {
    res.writeHead(200, {
        'Content-Type': 'application/json'
    });
    try {
        callLocationAPI(req, res);
    } catch (e) {
        console.log("Error:", e.message);
        res.end("Try again later", e.message);
    }
}).listen(6868, '127.0.0.1');
console.log('Server running at http://127.0.0.1:6868/');


function getCoordinates(mainreq, mainres) {
  // https://apidev1.testcoke.com/tccc-googlemaps-geocode-version-1 
  // ?address={Street Address}, {City}, {State} 
  var routePath = mainreq.url; 
  //routePath = routePath.replace("/", ""); 
  //routePath = routePath.replace(",", ""); 
  var options = { 
    path : routePath, 
    method : 'GET' 
  }; 
  console.log('Query String is ' + routePath); 
  var req = https.request(options); 
  req.on('response', function(response) 
         { 
    response.setEncoding('utf8'); 
    response.on('data', function(chunk) { }); 
    response.on('end', function() { }); }); 
  	req.on('error', function(e) 
           { 
      		console.log('problem with request: ' + e.message); 
    		}); 
  req.end(); 
}

Also ensure if the function calls are accurate.

Since callLocationAPI is missing.

[nmallesh]

Hi @devesh.raghwan,

Use the express module, it has more features and capabilities.

http://maps.googleapis.com/maps/api/directions/json?origin=Central%20Park&destination=Empire%20State...

The following snippet is the working script to connect to the above end point. It makes a GET call on the end point specified.

var express = require('express');
var app = express();
var request = require('request');


app.get('/',function(req,res){
      getCoordinates(req, res,function(err,response){
    if(!err)
    res.send(response);        
    else{
        res.send({"message":"Error"});
    }
    });
})

function getCoordinates(mainreq, mainres,callback) {
  var options = { 
    method : 'GET',
    uri: 'http://maps.googleapis.com/maps/api/directions/json?origin=Central Park&destination=Empire State Building&sensor=false&mode=walking', 
  }; 
  request(options,function(err,res, body){     
      if (err || !res) return callback();
      callback(null, body);
    });    
      console.log("Done");  
}
var server = app.listen(8081);

You may add further functionalities.

Keep us posted. Hope this helps, thank you.

[#5]

Thank you for your answer.