pebblebed
Version:
Simplified interactions with Google Datastore for NodeJS
89 lines • 4.29 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.PebblebedDefaultRedisCacheStore = void 0;
const PebblebedCacheStore_1 = require("./PebblebedCacheStore");
const Core_1 = require("../Core");
const serialization_1 = require("../utility/serialization");
class PebblebedDefaultRedisCacheStore extends PebblebedCacheStore_1.PebblebedCacheStore {
constructor(ioRedisClient) {
super();
this.namespace = "PEBBLEBED";
if (process.env.PEBBLEBED_REDIS_CACHE_NAMESPACE) {
console.info(`Pebblebed: Using Redis Cache namespace from environment variable: PEBBLEBED_REDIS_CACHE_NAMESPACE = "${process.env.PEBBLEBED_REDIS_CACHE_NAMESPACE}"`);
this.namespace = process.env.PEBBLEBED_REDIS_CACHE_NAMESPACE;
}
this.redis = ioRedisClient;
}
createEntityCacheKey(dsKey) {
return `${this.namespace}:${dsKey.namespace}:${dsKey.path.join(":")}`;
}
getEntitiesByKeys(keys) {
return __awaiter(this, void 0, void 0, function* () {
const keyStrings = keys.map((key) => this.createEntityCacheKey(key));
if (keyStrings.length >= 1) {
const redisResult = yield this.redis.mget(...keyStrings);
let containsNulls = false;
const results = redisResult.map((result) => {
if (result != null) {
return JSON.parse(result, serialization_1.reviveDateObjects);
}
containsNulls = true;
return null;
});
if (!containsNulls) {
return results;
}
}
return Promise.resolve(null);
});
}
setEntitiesAfterLoadOrSave(entities, secondsToCache) {
return __awaiter(this, void 0, void 0, function* () {
if (entities.length > 0) {
const pipeline = this.redis.pipeline();
entities.forEach((entity) => {
pipeline.setex(this.createEntityCacheKey(entity[Core_1.default.Instance.dsModule.KEY]), secondsToCache, JSON.stringify(entity));
});
yield pipeline.exec();
}
});
}
setQueryResponse(queryResponse, queryHash, secondsToCache) {
return __awaiter(this, void 0, void 0, function* () {
yield this.redis.setex(`${this.namespace}:${queryHash}`, secondsToCache, JSON.stringify(queryResponse));
});
}
getQueryResponse(queryHash) {
return __awaiter(this, void 0, void 0, function* () {
const redisResult = yield this.redis.get(`${this.namespace}:${queryHash}`);
if (redisResult != null) {
return JSON.parse(redisResult, serialization_1.reviveDateObjects);
}
return Promise.resolve(null);
});
}
flushQueryResponse(queryHash) {
return __awaiter(this, void 0, void 0, function* () {
yield this.redis.del(`${this.namespace}:${queryHash}`);
});
}
flushEntitiesByKeys(keys) {
return __awaiter(this, void 0, void 0, function* () {
const keyStrings = keys.map((key) => this.createEntityCacheKey(key));
if (keyStrings.length >= 1) {
yield this.redis.del(...keyStrings);
}
});
}
}
exports.PebblebedDefaultRedisCacheStore = PebblebedDefaultRedisCacheStore;
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