getaddrinfo ENOTFOUND API Google Cloud - api

Question

I'm trying to execute API.AI tutorial for building a weather bot for Google Assistant (the one here: https://dialogflow.com/docs/getting-started/basic-fulfillment-conversation)
I made everything successfully, created the bot within API, created the Fulfillments, installed NodeJS on my pc, connected Google Cloud Platform, etc.
Then I created the index.js file by copying it exactly how it's stated on API.ai tutorial with my API key from World Weather Organisation (see below).
But when I use the bot, it doesn't work. On the Google Cloud Platform the error is always the same:
Error: getaddrinfo ENOTFOUND api.worldweatheronline.com
api.worldweatheronline.com:80
at errnoException (dns.js:28)
at GetAddrInfoReqWrap.onlookup (dns.js:76)
No matter how often I do it I get the same error. So I don't actually reach the API. I tried to see if anything changed from WWO side (URL, etc.) but apparently no. I updated NodeJS and still same issue. I refreshed the Google Cloud platform completely and didn't help.
That one I really can't debug. Could anyone help?
Here's the code from API.ai:
'use strict';
const http = require('http');
const host = 'api.worldweatheronline.com';
const wwoApiKey = '[YOUR_API_KEY]';
exports.weatherWebhook = (req, res) => {
// Get the city and date from the request
let city = req.body.result.parameters['geo-city']; // city is a required param
// Get the date for the weather forecast (if present)
let date = '';
if (req.body.result.parameters['date']) {
date = req.body.result.parameters['date'];
console.log('Date: ' + date);
}
// Call the weather API
callWeatherApi(city, date).then((output) => {
// Return the results of the weather API to Dialogflow
res.setHeader('Content-Type', 'application/json');
res.send(JSON.stringify({ 'speech': output, 'displayText': output }));
}).catch((error) => {
// If there is an error let the user know
res.setHeader('Content-Type', 'application/json');
res.send(JSON.stringify({ 'speech': error, 'displayText': error }));
});
};
function callWeatherApi (city, date) {
return new Promise((resolve, reject) => {
// Create the path for the HTTP request to get the weather
let path = '/premium/v1/weather.ashx?format=json&num_of_days=1' +
'&q=' + encodeURIComponent(city) + '&key=' + wwoApiKey + '&date=' + date;
console.log('API Request: ' + host + path);
// Make the HTTP request to get the weather
http.get({host: host, path: path}, (res) => {
let body = ''; // var to store the response chunks
res.on('data', (d) => { body += d; }); // store each response chunk
res.on('end', () => {
// After all the data has been received parse the JSON for desired data
let response = JSON.parse(body);
let forecast = response['data']['weather'][0];
let location = response['data']['request'][0];
let conditions = response['data']['current_condition'][0];
let currentConditions = conditions['weatherDesc'][0]['value'];
// Create response
let output = `Current conditions in the ${location['type']}
${location['query']} are ${currentConditions} with a projected high of
${forecast['maxtempC']}°C or ${forecast['maxtempF']}°F and a low of
${forecast['mintempC']}°C or ${forecast['mintempF']}°F on
${forecast['date']}.`;
// Resolve the promise with the output text
console.log(output);
resolve(output);
});
res.on('error', (error) => {
reject(error);
});
});
});
}

Answer 1

Oh boy, in fact the reason was most stupid ever. I didn't enable "billing" on Google Cloud Platform and that's why it blocked everything (even though I'm using a free test of the API). They just wanted my credit card number. It works now

Answer 2

I had the same issue trying to hit my db. Billing wasn't the fix as I had billing enabled already.
For me it was knexfile.js setup for MySql - specifically the connection object. In that object, you should replace the host key with socketPath; and prepend /cloudsql/ to the value. Here's an example:
connection: {
// host: process.env.APP_DB_HOST, // The problem
socketPath: `/cloudsql/${process.env.APP_DB_HOST}`, // The fix
database: process.env.APP_DB_NAME,
user: process.env.APP_DB_USR,
password: process.env.APP_DB_PWD
}
Where process.env.APP_DB_HOST is your Instance connection name.
PS: I imagine that even if you're not using Knex, the host or server parameter of a typical DB connectionstring will have to be called socketPath when connecting to Google Cloud SQL.