gistfile1.txt

https://habr.com/post/351168/
Basic saga flow:

// sagas/index.js
export default function* rootSaga() {
  yield fork(dataSaga)
}

// index.js 
import rootSaga from './sagas'
import createSagaMiddleware from 'redux-saga'

const sagaMiddleware = createSagaMiddleware()

sagaMiddleware.run(rootSaga)

// sagas/dataSaga.js

import { call, put, takeEvery } from 'redux-saga/effects'

import {
  FETCH_DATA_ENTITIES,
  fetchDataEntitiesFailure,
  fetchDataEntitiesSuccess,
} from '../actions/entities/data-entities-actions'
import apiRoutes from '../constants/api-routes'
import apiSaga from './api-saga'

function* fetchDataEntitiesSaga({ payload }) {
  const { id, queryParams } = payload

  try {
   
    const { content } = yield call(apiSaga, {
      endpoint: `${apiRoutes.DATA}`,
    })

    const successPayload = {
      entities: content,
    }

    yield put(fetchDataEntitiesSuccess(successPayload))
  } catch (e) {
    const errorPayload = {
      id,
      error: e.message,
    }
    yield put(fetchDataEntitiesFailure(errorPayload))
  }
}

export default function* dataEntitySaga() {
  yield takeEvery(FETCH_DATA_ENTITIES.request, fetchDataEntitiesSaga)
}