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async await resolve graphql query promise not resolved

Hi All i am trying to use graphql api to fetch some country. I am using this API https://studio.apollographql.com/public/countries/home?variant=current and this is playground https://countries.trevorblades.com/
The problem i am facing is that i cannot resolve the Promise. I am using React and fetch method.
my fetchCountries.js file:
import { API_URL } from "./constants";
const COUNTRIES_QUERY = `{
country(code: "BR") {
name
native
emoji
currency
languages {
code
name
}
}
}`;
const fetchCountries = async () => {
await fetch(API_URL, {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
query: COUNTRIES_QUERY,
}),
})
.then((response) => {
if (response.status >= 400) {
throw new Error("Error fetching data");
} else {
return response.json();
}
})
.then((data) => data.data);
};
export default fetchCountries;
i am using async, await in the function so that it gets resolved when i call it. Now in my App.js when i call fetchCountries function in console.log i get :
Promise {<pending>}
[[Prototype]]
:
Promise
[[PromiseState]]
:
"fulfilled"
[[PromiseResult]]
:
undefined
App.js:
import "./App.css";
import fetchCountries from "./api/fetchCountries";
const App = () => {
console.log("CONSOLE LOG API", fetchCountries());
return <div>App</div>;
};
export default App;
I have also tried to use useEffect hook but got the same result:
import "./App.css";
import fetchCountries from "./api/fetchCountries";
import React, { useEffect, useState } from "react";
const App = () => {
const [test, setTest] = useState();
console.log("CONSOLE LOG API", fetchCountries());
useEffect(() => {
const getCountries = async () => {
await fetchCountries();
};
setTest(getCountries());
}, []);
console.log("USE EFFECT API", test);
return <div>App</div>;
};
export default App;

You should do it as follows
const fetchCountries = async () => {
const response = await fetch(API_URL, {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
query: COUNTRIES_QUERY,
}),
})
if (response.status >= 400) {
throw new Error("Error fetching data");
} else {
return await response.json();
}
};
export default fetchCountries;
Or enclose entire fetch.then... chain inside paranthesis.

URQL WSS connection with GraphQL-WS says error 4500

import {
createClient,
defaultExchanges,dedupExchange, cacheExchange, fetchExchange,
subscriptionExchange,
gql
} from "#urql/core";
import { createClient as createWSClient } from "graphql-ws";
import { pipe, subscribe } from "wonka";
import { getToken, setToken } from "./helper";
const wsClient = createWSClient({
url: 'wss://**********/subscriptions',
reconnect: true,
});
const client = createClient({
url: "https://***********/",
fetchOptions: () => {
const token = getToken()
return token ? { headers: { authorization: `Bearer "${token}"` } } : {}
},
// the default:
exchanges: [
...defaultExchanges,
subscriptionExchange({
forwardSubscription(operation) {
return {
subscribe: (sink) => {
const dispose = wsClient.subscribe(operation, sink);
return {
unsubscribe: dispose,
};
},
};
},
}),
]
});
SUB_TO_MESSAGES = async () => {
console.log('sub')
const token = getToken();
console.log(String(token))
const { unsubscribe } = pipe(
await client.subscription(messageAdded,{ jwt: token }),
subscribe((result) => {
console.log(result)
})
)
};
I dont get the same issue with try and catch using GraphQL-WS but I still dont get any data from the server. The assignment is a vanillaJS project using GraphQL.I didndt post the url, jwt token,or the GET, POST, REgG as they work as intended. The rendering is done with a proxy. The error message is:
Connection Closed: 4500 Cannot read properties of undefined (reading 'Authorization')
Even playground doesnt work. Something wrong with the endpoint. It worked 2 weeks ago but admin says it still work yet I can find the problem. It used to work for me.
Here is the try and catch version:
import { createClient} from "graphql-ws";
import pStore from "./handler.js";
import { getToken } from "./helper";
const client = createClient({
url: "wss://******/subscriptions",
reconnect: true,
connectionParams:{
headers: {
"Authorization":`Bearer ${getToken()}`
}
},
})
async SUB_MESSAGE() {
try {
console.log('called Gql server')
const onNext = (res) => {
let obj = res.data.messageAdded
console.log(obj)
pStore[obj.id] = obj
pStore.render(obj)
};
let unsubscribe = () => {
/* complete the subscription */
};
new Promise((resolve, reject) => {
client.subscribe({
query: `subscription{messageAdded(jwt:"${getToken()}"){id text fromAgent createdAt updatedAt}}`,
},
{
next: (data)=> onNext(data),
error: reject,
complete: () => resolve(true),
})
})
}catch(error){
console.error('There has been a problem with your ws operation:', error);
}
}
Either way I think its a ad character, scope issue but I dont know where.

Django + React Axios instance header conflict?

I have all my functions based views on django protected with #permission_classes([IsAuthenticated]) so I have to send a JWT as Bearer token on every request.
In the first version I was using this code:
import axios from 'axios';
import { decodeUserJWT } from '../../extras'
const user = JSON.parse(localStorage.getItem("user"));
var decoded = decodeUserJWT(user.access);
var user_id = decoded.user_id
const instance = axios.create({
baseURL: 'http://localhost:8000/api',
headers: {Authorization: 'Bearer ' + user.access},
params: {userAuth: user_id}
});
export default instance;
Everything was working fine.
But then I added interceptors so I could handle the refreshToken process:
const setup = (store) => {
axiosInstance.interceptors.request.use(
(config) => {
const token = TokenService.getLocalAccessToken();
if (token) {
// const uid = await decodeUserJWT(token);
config.headers["Authorization"] = 'Bearer ' + token;
// config.headers["userAuth"] = uid;
}
return config;
},
(error) => {
return Promise.reject(error);
}
);
const { dispatch } = store;
axiosInstance.interceptors.response.use(
(res) => {
return res;
},
async (err) => {
const originalConfig = err.config;
if (originalConfig.url !== "/auth/token/obtain/" && err.response) {
console.log("TOKEN INTERCEPTOR");
// Access Token was expired
if (err.response.status === 401 && !originalConfig._retry) {
originalConfig._retry = true;
try {
const rs = await axiosInstance.post("/auth/token/refresh/", {
refresh: TokenService.getLocalRefreshToken(),
});
const { access } = rs.data;
dispatch(refreshToken(access));
TokenService.updateLocalAccessToken(access);
return axiosInstance(originalConfig);
} catch (_error) {
return Promise.reject(_error);
}
}
}
return Promise.reject(err);
}
);
};
What happens?
When I add the line config.headers["userAuth"] = uid; the django server console starts showing up that when the react app tries to access the routes it gets a Not Authorized, and when I take that line off de code ... it works fine.
I also tried to pass the param userAuth in the axios.create and keep only the Bearer config inside the interpector code, but still no positive result, the code with the interpector code only works when I take off the userAuth line from axios.
Any ideia on why this is happening and how can I fix this?

Service call is not going in react-native. Getting warning like "Possible unhandled Promise Rejection, Reference error: response is not defined"

I am new to react native and making service call for the first time. My problem is service call is not going and getting warning like
Possible unhandled Promise Rejection, Reference error: response is not defined.
I am trying to hit loginUser function.
Api.js
const BASE_URL = "http://localhost:8200";
export const api = async (url, method, body = null, headers = {}) => {
try {
const endPoint = BASE_URL.concat(url);
const reqBody = body ? JSON.stringify(body) : null;
const fetchParams = {method, headers};
if((method === "POST" || method === "PUT") && !reqBody) {
throw new Error("Request body required");
}
if(reqBody) {
console.log("ReQBody--->"+reqBody);
fetchParams.headers["Content-type"] = "application/json";
fetchParams.body = reqBody;
}
const fetchPromise = await fetch(endPoint, fetchParams);
const timeOutPromise = new Promise((resolve, reject) => {
setTimeout(() => {
reject("Request Timeout");
}, 3000);
});
const response = await Promise.race([fetchPromise, timeOutPromise]);
return response;
} catch (e) {
return e;
}
}
export const fetchApi = async (url, method, body, statusCode, token = null, loader = false) => {
console.log("In FetchAPi Function");
try {
const headers = {}
const result = {
token: null,
success: false,
responseBody: null
};
if(token) {
headers["securityKey"] = token;
}
const response = await api(url, method, body, headers);
console.log("fetchApi-->>"+response);
if(response.status === statusCode) {
result.success = true;
let responseBody;
const responseText = await response.text();
try {
responseBody = JSON.parse(responseText);
} catch (e) {
responseBody = responseText;
}
result.responseBody = responseBody;
return result;
}
let errorBody;
const errorText = await response.text();
try {
errorBody = JSON.parse(errorText);
} catch (e) {
errorBody = errorText;
}
result.responseBody = errorBody;
console.log("FetchApi(Result)--->>"+result);
throw result;
} catch (error) {
return error;
}
}
auth.actions.js
export const loginUser = (payload) => {
console.log("In LoginUser function2");
return async (dispatch) => {
<-----**I am not able to enter into this block**------>
try {
dispatch({
type: "LOGIN_USER_LOADING"
});
console.log("In LoginUser function3");
const response = await fetchApi("/login", "POST", payload, 200);
if(response.success) {
dispatch({
type: "LOGIN_USER_SUCCESS",
});
dispatch({
type: "AUTH_USER_SUCCESS",
token: response.token
});
dispatch({
type: "GET_USER_SUCCESS",
payload: response.responseBody
});
return response;
} else {
throw response;
}
} catch (error) {
dispatch({
type: "LOGIN_USER_FAIL",
payload: error.responseBody
});
return error;
}
}
}
In console log, I can't see anything in network tab. In the android emulator, the mentioned warning has come.
My console tab

I see that your BASE_URL is served using an http endpoint. You can only make requests to https endpoints from react native projects. A possible workaround is to use ngrok. Just download it and run ./ngrok http 8200 since your port number is 8200. It will expose an HTTPS endpoint and replace your BASE_URL with that link and try fetching the data again.

I use the following code to make API calls. See if you can integrate it in your code. it is quite simple:
In a class called FetchService:
class FetchService {
adminAuth(cb, data) {
console.log('here in the fetch service');
return fetch(
baseURL + "login",
{
method: "POST",
headers: {
Accept: "application/json",
},
body: data
}
)
.then((response) => response.json())
.then(responsej => {
cb(null, responsej);
})
.catch(error => {
cb(error, null);
});
}
}
export default FetchService;
Then call it from your component using:
import FetchService from './FetchService';
const fetcher = new FetchService;
export default class LoginScreen extends React.Component {
fetchData() {
const data = new FormData();
data.append('username',this.state.username);
data.append('password',this.state.password);
fetcher.wastereport((err, responsej) => {
if(err) {
//handle error here
} else {
//handle response here
}
}, data);
}
}

localstorage.getitem('key') sometimes returns null - in a react app

this is a very weird problem! I'm trying to build a login form which sets a JWT token in localstorage. Other forms then use that token to post requests. I can see the token in my console.log just fine, but sometimes (like 3 out of 5 times), when I am setting localstorage.getitem('idToken'), it shows as null. This behavior most noticeably happens when I remove the console.log(idToken) from my loginUser() function (code in actions.js file - given below). What am I doing wrong? my app is built using React/Redux.
action.js
export function loginUser(creds) {
const data = querystring.stringify({_username: creds.username, _password: creds.password});
let config = {
method: 'POST',
headers: { 'Content-Type':'application/x-www-form-urlencoded' },
body: data
};
return dispatch => {
// We dispatch requestLogin to kickoff the call to the API
dispatch(requestLogin(creds));
return fetch(BASE_URL+'login_check', config)
.then(response =>
response.json().then(user => ({ user, response }))
).then(({ user, response }) => {
if (!response.ok) {
// If there was a problem, we want to
// dispatch the error condition
dispatch(loginError(user.message));
return Promise.reject(user)
} else {
localStorage.setItem('idToken', user.token);
let token = localStorage.getItem('idToken')
console.log(token);
// if I remove this log, my token is returned as null during post.
dispatch(receiveLogin(user));
}
}).catch(err => console.log("Error: ", err))
}
}
here's my POST request:
import axios from 'axios';
import {BASE_URL} from './middleware/api';
import {reset} from 'redux-form';
let token = localStorage.getItem('idToken');
const AuthStr = 'Bearer '.concat(token);
let headers ={
headers: { 'Content-Type':'application/json','Authorization' : AuthStr }
};
export default (async function showResults(values, dispatch) {
console.log(AuthStr);
axios.post(BASE_URL + 'human/new', values, headers)
.then(function (response) {
console.log(response);
alert("Your submit was successful");
//dispatch(reset('wizard'));
}).catch(function (error) {
console.log(error.response);
alert(error.response.statusText);
});
});
This GET request works everytime, BTW:
getHouses = (e) => {
let token = localStorage.getItem('idToken') || null;
const AuthStr = 'Bearer '.concat(token);
axios.get(BASE_URL + 'household/list', { headers: { Authorization: AuthStr } }).then((response) =>
{
let myData = response.data;
let list = [];
let key =[];
for (let i = 0; i < myData._embedded.length; i++) {
let embedded = myData._embedded[i];
list.push(embedded.friendlyName);
key.push(embedded.id);
}
this.setState({data: list, key: key});
})
.catch((error) => {
console.log('error' + error);
});
}
I'm at my wit's end! Please help!

The localStorage.setItem() is a asynchronous task, and sometimes you run let token = localStorage.getItem('idToken') just after the setItem will fail, so you get a null, so please put the getItem operation some later, have a try, it will be different :
setTimeout(function() {
let token = localStorage.getItem('idToken');
dispatch(receiveLogin(user));
}, 50);

Move your token logic (i.e. localStorage.getItem('idToken');) inside the exported function and it should work
export default (async function showResults(values, dispatch) {
let token = localStorage.getItem('idToken');
const AuthStr = 'Bearer '.concat(token);
let headers ={
headers: { 'Content-Type':'application/json','Authorization' : AuthStr
}
};
axios.post(BASE_URL + 'human/new', values, headers)...

There can't be a case where you set a key value in localstorage and then it returns you null, immediately in the next line.
localStorage.setItem('idToken', user.token);
let token = localStorage.getItem('idToken');
This will only happen if your user.token value is null.
Maybe the case here is your thennable function not returning value to your next then like this:
....
.then(response =>
// return response to your next then function
// this will be passed to next then function as params
return response.json();
).then(({ user, response }) => {
....

Make a function whose return the value or a default value
const [hideTyC, setHideTyC] = useState(false);
const loadTyCFlag = (): any => {
if (
localStorage.getItem("tyc") !== null ||
localStorage.getItem("tyc") !== undefined
) {
return localStorage.getItem("tyc") || false;
}
};
useIonViewDidEnter(() => {
hideTabBar();
setHideTyC(loadTyCFlag());
});