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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 | 1x 1x 1x 1x 1x 1x 1x 1x 2x 2x 1x 1x 1x 1x 1x 1x | /**
* @module information
*/
const informationRepository = require("../../repositories/information");
const cache = require("../cache");
/**
* Updates an information entry that already exists in the database.
* Upon success, updates the record in the cache too.
* @param {Object} information a valid information object
* @return {Object} updated information entry
*/
const updateInformation = async (information) => {
const updateInformationResult = await informationRepository.update(information);
const updatedRecord = updateInformationResult.rows[0];
// if successful, cache it
cache.set(`information-${information.type}`, updatedRecord.content);
return updatedRecord;
};
/**
* Gets content of an information entry matching the input information
* type. Fetches from cache if possible, otherwise, fetches from
* database and caches the value for future use.
* @param {String} type type of information
* @return {String} content of information entry
*/
const getInformationData = async (type) => {
const cacheKey = `information-${type}`;
if (cache.has(cacheKey)) {
return cache.get(cacheKey);
} else {
const informationResult = await informationRepository.findByType(type);
const informationObject = informationResult.rows[0];
// if successful, cache it
cache.set(cacheKey, informationObject.content);
return informationObject.content;
}
};
module.exports = {
getInformationData,
updateInformation,
};
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