result-first-step.js

app.get('/data/:entry_id', (req, res, next) => {
    const { entry_id } = req.params;
    
    database.getById(id)
        .then((data) => {
            logger('[INFO] data is received');
            tracking('data.received', {id: id});
            return res.json(data);
        })
        .catch(next);
});

app.get('/data/:entry_id/filtered', (req, res, next) => {
    const { entry_id } = req.params;
    
    database.getById(id)
        .then((data) => dataFilterService({id: data}))
        .then((apiResult) => {
            logger('[INFO] data is filtered');
            tracking('api.result.received');
            res.json(apiResult);
        })
        .catch(next);
});