Error while deploying dialog flow sample code - node.js

Question

I am trying to deploy sample weather dialog flow chat bot,
I am deploying it as per instruction given in dialog flow manual
for deploying index.js I am using following command
gcloud beta functions deploy helloHttp --stage-bucket weather-example --trigger-http
after deploying file I get following error
ERROR: (gcloud.beta.functions.deploy) OperationError: code=3, message=Function load error: Node.js module defined by file index.js is expected to export function named helloHttp
I dont know how to resolved it, I am new to google cloud and dialog flow,
here is my index.js file I just added my whether api key
'use strict';
const http = require('http');
const host = 'api.worldweatheronline.com';
const wwoApiKey = 'MY wheather key';
exports.weatherWebhook = (req, res) => {
// Get the city and date from the request
let city = req.body.queryResult.parameters['geo-city']; // city is a required param
// Get the date for the weather forecast (if present)
let date = '';
if (req.body.queryResult.parameters['date']) {
date = req.body.queryResult.parameters['date'];
console.log('Date: ' + date);
}
// Call the weather API
callWeatherApi(city, date).then((output) => {
res.json({ 'fulfillmentText': output }); // Return the results of the weather API to Dialogflow
}).catch(() => {
res.json({ 'fulfillmentText': `I don't know the weather but I hope it's good!` });
});
};
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) => {
console.log(`Error calling the weather API: ${error}`)
reject();
});
});
});
}
can you please tell me whats going wrong here?

Answer 1

As per you index.js file, you are exporting weatherWebhook named javascript function, so you should either put value of deploy function name attribute of deploy command of GCloud beta functions same as exported method name because by default when a Google Cloud Function is triggered, it executes a JavaScript function with the same name or if it cannot find a function with the same name, it executes a function named function.
For this your command would be, try this
gcloud beta functions deploy weatherWebhook --stage-bucket weather-example --trigger-http
OR
you can use --entry-point argument to tell gcp which function would be the entry point for your Google Cloud Function, if you want different name for your deployment.
gcloud beta functions deploy helloHttp --entry-point weatherWebhook --stage-bucket weather-example --trigger-http
For more info about Google cloud function deploy command, click here

Answer 2

Hello friends I mistakenly using wrong deployment url,
Correct url is a follows:
gcloud beta functions deploy helloHttp --entry-point weatherWebhook --stage-bucket weather-example --trigger-http