@splitsoftware/splitio-commons
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Split JavaScript SDK common components
46 lines (45 loc) • 2.25 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.ImpressionsCacheInRedis = void 0;
var utils_1 = require("../utils");
var IMPRESSIONS_TTL_REFRESH = 3600; // 1 hr
var ImpressionsCacheInRedis = /** @class */ (function () {
function ImpressionsCacheInRedis(log, key, redis, metadata) {
this.log = log;
this.key = key;
this.redis = redis;
this.metadata = metadata;
}
ImpressionsCacheInRedis.prototype.track = function (impressions) {
var _this = this;
return this.redis.rpush(this.key, (0, utils_1.impressionsToJSON)(impressions, this.metadata)).then(function (queuedCount) {
// If this is the creation of the key on Redis, set the expiration for it in 1hr.
if (queuedCount === impressions.length) {
return _this.redis.expire(_this.key, IMPRESSIONS_TTL_REFRESH);
}
});
};
ImpressionsCacheInRedis.prototype.count = function () {
return this.redis.llen(this.key).catch(function () { return 0; });
};
ImpressionsCacheInRedis.prototype.drop = function (count) {
if (!count)
return this.redis.del(this.key);
return this.redis.ltrim(this.key, count, -1);
};
ImpressionsCacheInRedis.prototype.popNWithMetadata = function (count) {
var _this = this;
return this.redis.lrange(this.key, 0, count - 1).then(function (items) {
return _this.redis.ltrim(_this.key, items.length, -1).then(function () {
// This operation will simply do nothing if the key no longer exists (queue is empty)
// It's only done in the "successful" exit path so that the TTL is not overriden if impressons weren't
// popped correctly. This will result in impressions getting lost but will prevent the queue from taking
// a huge amount of memory.
_this.redis.expire(_this.key, IMPRESSIONS_TTL_REFRESH).catch(function () { }); // noop catch handler
return items.map(function (item) { return JSON.parse(item); });
});
});
};
return ImpressionsCacheInRedis;
}());
exports.ImpressionsCacheInRedis = ImpressionsCacheInRedis;