Example of Retry Logic with Redux-Saga
Import Required Effects: First, you'll need to import necessary effects such as call, put, delay, and any action creators.
Write a Retry Logic Function: Create a generator function that includes retry logic. It should try to perform the operation and if it fails, retry the operation with a delay.
Implement Error Handling: If the operation exceeds the number of retries, it should throw an error, or you could dispatch a failure action.
Example:
import { call, put, delay, takeLatest } from 'redux-saga/effects';
import { myApiCall } from './api'; // Your API call
import { fetchDataSuccess, fetchDataFailure } from './actions'; // Your action creators
// Retry logic generator function
function* retryOperation(apiCall, retries = 3, delayTime = 1000) {
let attempts = 0;
while (attempts < retries) {
try {
// Attempt the API call
const response = yield call(apiCall);
yield put(fetchDataSuccess(response));
return; // If the API call succeeds, exit the loop
} catch (error) {
attempts += 1;
if (attempts >= retries) {
// After retrying 'retries' times, dispatch failure action
yield put(fetchDataFailure(error));
return;
}
// Wait for a specified time before retrying
yield delay(delayTime);
}
}
}
// Worker saga that calls the retry logic
function* fetchDataSaga() {
yield call(retryOperation, myApiCall); // Pass the API function here
}
// Watcher saga that listens for the action to trigger the worker
function* watchFetchData() {
yield takeLatest('FETCH_DATA_REQUEST', fetchDataSaga);
}
export default watchFetchData;
