I create a websocket and then a custom route. Before publishing I need to select an integration for $disconnect and $default, for both I choose Mock (I have also tried default Lambda functions), this allows me to publish.
I then use wscat to call
wscat -c wss://t0p5b2xpm3.execute-api.us-east-1.amazonaws.com/prod
the socket connects successfully,then i try to call the route
{"action":"echo", "data":"test response body"}
and get the following error.
{"message": "Internal server error", "connectionId":"aDH97cQJoAMCI8Q=", "requestId":"aDIAhGE8oAMFoEg="}
anyone have any ideas please?
thanks,
Matt
For a lambda function, you need to return a statusCode of 200 for $connect, $disconnect, $default, and custom routes. A trivial javascript example:
module.exports.handler = async (event) => {
return {
statusCode: 200,
};
};
exports.handler = async (event) => {
// TODO implement
let time = "undefined";
let state = "undefined";
if (event.body !== null && event.body !== undefined) {
let body = JSON.parse(event.body);
if (body.time && body.state)
{
time = body.time;
state = body.state;
}
}
const response = {
statusCode: 200,
body: JSON.stringify({time:time, state: state}),
};
return response;
};
In case of API-Gateway you won't be able to modify the response as json as in Get and Post, so you can use this code to fetch time and state from the coming json object. Connect using wscat -c link and then send your json as {"time":"22:32","state":"LA"}
Try to put in $default to make sure that you are receiving the sending the right way.
Good luck!
Related
I want to build an email verification. After the user registers, the user gets an email and clicks on it for verification purposes. The email-link invokes a netlify lambda function (api end point). Inside the link is a jwt token, which I decode on the backend. I used
window.location.href
for it and sliced the part I needed and decoded it. On localhost, it works fine, however, if I deploy it to netlify, I get an
window is undefined
error. I read that you have to check for
typeof window !== 'undefined'
However, if I add that to my lambda function I don't get any console.log statements.
exports.handler = async (event, context, callback) => {
if (typeof window !== 'undefined') {
let url = window.location.href
let index = url.indexOf("=");
let token = url.slice(index+1)
console.log(token, 'token here')
const decoded = jwt.verify(token, process.env.SECRET);
console.log('confirm registration route triggered',decoded)
if (decoded) {
const { email } = decoded;
console.log(decoded, 'decoded here')
User.findOneAndUpdate({email: email}, {verified: true },(...e)=>{
console.log(e)
});
} else {
console.log('could not update user')
//redirect user to page with message about email confirmation link expiration
//and proposal to register again
}
console.log('confirm registration got invoked')
}
return {
statusCode: 400,
body: "Oops"
}
};
I read that the function first runs on the server when deployed and afterwards on the client. Seems like it does not run on my client, as I invoke the api-endpoint directly? I'm quite a beginner when it comes to API-Endpoints, thanks for reading!
In case you have the same issue when deploying to netlify, you have to run
event.queryStringParameters
which gives you access to the query parts of your url.
I'm having trouble getting a response from a callback uri and I would really appreciate any help you could give me.
I am trying to use the Fitbit API which requires you to use a callback url to get an Auth Code.
Workflow:
1. Go to Fitbit url to get user to allow the app access to their personal data.
2. User agrees to the conditions
3. User gets redirected to my API
4. The API returns the code from (Code is located in URL and I can access it)
5. I console.log the code out to verify it
6. API returns the code
7. I work with code then exchanging it for an access token.
The problem is that I don't return the code (Or anything )when I return to the app even though I can console.log it on the API. The response I get is NULL
Here is the URL:
url = "https://www.fitbit.com/oauth2/authorize?response_type=code&client_id=CLIENT_ID&redirect_uri=https://REDIRECT_URL&scope=activity%20heartrate%20location%20nutrition%20profile%20settings%20sleep%20social%20weight&expires_in=604800";
I then open the URL in the InAPPBrowser successfully:
if (url !== "") {
const canOpen = await Linking.canOpenURL(url)
if (canOpen) {
try {
const isAvailable = await InAppBrowser.isAvailable()
if (isAvailable) {
const result =InAppBrowser.open(url, {
// iOS Properties
dismissButtonStyle: 'done',
preferredBarTintColor: 'gray',
preferredControlTintColor: 'white',
// Android Properties
showTitle: true,
toolbarColor: '#6200EE',
secondaryToolbarColor: 'black',
enableDefaultShare: true,
}).then((result) => {
console.log("Response:",JSON.stringify(result))
Linking.getInitialURL().then(url => {
console.log("Tests: ",url)
this._setTracker(url as string);
});
})
} else Linking.openURL(url)
} catch (error) {
console.log("Error: ",error)
}
}
}
From here the URL opens successfully.
Here is the API now which is done in Typescript on AWS serverless and Lambda
export const handler: APIGatewayProxyHandler = async (event, _context, callback) =>{
let provider = event.path
//prints code
let x = event.queryStringParameters
console.log("Code: ",x)
const response = {
statusCode: 200,
body: "Success"
};
return response;
}
Please let me know if further detail is required?
Thank you!
Right so it turns out what I was doing was correct apart from the response should have been 301 which is a redirect response.
const response= {
statusCode: 301,
headers: {
"location": `app://CALLBACK RESPONSE ADDRESS?type=${provider}`
},
body: "Boom"
}
I am new to serverless. I want to fetch data from google. I am using Google Custom Search engine. Although I got results when I run locally. But when I deploy to AWS Lambda I am getting "Internal Server Error". Can anyone help me to fix the issue?
'use strict';
var request = require('request');
module.exports.get = (event, context, callback) => {
request('https://www.googleapis.com/customsearch/v1?q=Serverless+AWS+Lambda&cx=xxxxxxxxxxx&key=API_key&num=10', function (error, response, body) {
if (!error && response.statusCode == 200) {
callback(null, response);
console.log(body);
} else {
console.warn(error);
}
});
};
I want a json output. I would like to save that result
Internal Server Error mostly points out that your lambda code could not be executed correctly. Did you pack all your dependencies (node_modules) within the ZIP file you provide to AWS lambda (e.g. request ?)
I'm using an express api (my back-end) and an angular app (my front-end).
One express js end point (let's call it '/foo') is processing a lot of files,
i send data using res.write() after each treatment so the http response body is update.
I would like to get this update on my angular app.
I was using ajax in a previous version and it worked fine with ajax call :
xhrFields: {
// Getting on progress streaming response
onprogress: function(e)
{
var progressResponse;
var response = e.currentTarget.response;
if(lastResponseLength === false)
{
progressResponse = response;
lastResponseLength = response.length;
}
else
{
progressResponse = response.substring(lastResponseLength);
lastResponseLength = response.length;
}
actualResponse += progressResponse
}
Unfortunatly i found nothing to get partial http body. I tried to use 'reportProgress' Parameter but it's not working.
For some more context my front-end angular code:
service.ts :
setHolidaysDirectory(holidaysKey: string, path: string): Observable<Object>{
const setHolidayDirectoryStreamHttpRequest =
new HttpRequest('POST', 'http://localhost:8089/holidays/pictures/edit', { 'key': holidaysKey,
'path': path
}, {headers: this._httpHeaders, reportProgress: true, responseType: 'text'});
// pipe stream answer
return this._http.request(setHolidayDirectoryStreamHttpRequest);
}
and my component just call the service and subscribe :
this._holidaysService
.setHolidaysDirectory(key, finalHolidaysForm.path)
.subscribe((stream) => {
console.log('new answer');
console.log(stream);
}, error => console.log(error));
But unfortunatly i got empty answer and all the http body is recovered after res.end() (server side)
Can anyone help pls !
Thank a lot !
My project base on koa,I want to intercept HTTP response,when the response's message is "no promission",then excute 'this.redirect()'.
Your middleware (interceptor in my example) can access the response body after it yield next, so just place your logic after it yields.
var route = require('koa-route');
var app = require('koa')();
var interceptor = function*(next) {
// wait for downstream middleware/handlers to execute
// so that we can inspect the response
yield next;
// our handler has run and set the response body,
// so now we can access it
console.log('Response body:', this.body);
if (this.body === 'no promission') {
this.redirect('/somewhere');
}
};
app.use(interceptor);
app.use(route.get('/', function*() {
this.body = 'no promission';
}));
app.listen(3001, function() {
console.log('Listening on 3001...');
});