@splitsoftware/splitio-commons
Version:
Split JavaScript SDK common components
92 lines (91 loc) • 5.11 kB
JavaScript
import { objectAssign } from '../utils/lang/objectAssign';
import { thenable } from '../utils/promise/thenable';
import { IMPRESSIONS_TRACKER_SUCCESS, ERROR_IMPRESSIONS_TRACKER, ERROR_IMPRESSIONS_LISTENER } from '../logger/constants';
import { CONSENT_DECLINED, DEBUG, DEDUPED, OPTIMIZED, QUEUED } from '../utils/constants';
import { strategyDebugFactory } from './strategy/strategyDebug';
import { strategyNoneFactory } from './strategy/strategyNone';
import { strategyOptimizedFactory } from './strategy/strategyOptimized';
import { uniqueKeysTrackerFactory } from './uniqueKeysTracker';
/**
* Impressions tracker stores impressions in cache and pass them to the listener and integrations manager if provided.
*/
export function impressionsTrackerFactory(params, storage, integrationsManager) {
var settings = params.settings, impressionsObserverFactory = params.impressionsObserverFactory, filterAdapterFactory = params.filterAdapterFactory;
var log = settings.log, impressionListener = settings.impressionListener, _a = settings.runtime, ip = _a.ip, hostname = _a.hostname, version = settings.version, impressionsMode = settings.sync.impressionsMode;
var observer = impressionsObserverFactory();
var uniqueKeysTracker = uniqueKeysTrackerFactory(log, storage.uniqueKeys, filterAdapterFactory && filterAdapterFactory());
var noneStrategy = strategyNoneFactory(storage.impressionCounts, uniqueKeysTracker);
var strategy = impressionsMode === OPTIMIZED ?
strategyOptimizedFactory(observer, storage.impressionCounts) :
impressionsMode === DEBUG ?
strategyDebugFactory(observer) :
noneStrategy;
return {
start: function () {
uniqueKeysTracker.start();
},
stop: function () {
uniqueKeysTracker.stop();
},
track: function (impressions, attributes) {
if (settings.userConsent === CONSENT_DECLINED)
return;
var impressionsToStore = impressions.filter(function (_a) {
var imp = _a.imp, disabled = _a.disabled;
return disabled ?
noneStrategy.process(imp) :
strategy.process(imp);
});
var impressionsLength = impressions.length;
var impressionsToStoreLength = impressionsToStore.length;
if (impressionsToStoreLength) {
var res = storage.impressions.track(impressionsToStore.map(function (item) { return item.imp; }));
// If we're on an async storage, handle error and log it.
if (thenable(res)) {
res.then(function () {
log.info(IMPRESSIONS_TRACKER_SUCCESS, [impressionsLength]);
}).catch(function (err) {
log.error(ERROR_IMPRESSIONS_TRACKER, [impressionsLength, err]);
});
}
else {
// Record when impressionsCache is sync only (standalone mode)
// @TODO we are not dropping impressions on full queue yet, so DROPPED stats are not recorded
if (storage.telemetry) {
storage.telemetry.recordImpressionStats(QUEUED, impressionsToStoreLength);
storage.telemetry.recordImpressionStats(DEDUPED, impressionsLength - impressionsToStoreLength);
}
}
}
// @TODO next block might be handled by the integration manager. In that case, the metadata object doesn't need to be passed in the constructor
if (impressionListener || integrationsManager) {
var _loop_1 = function (i) {
var impressionData = {
// copy of impression, to avoid unexpected behavior if modified by integrations or impressionListener
impression: objectAssign({}, impressions[i].imp),
attributes: attributes,
ip: ip,
hostname: hostname,
sdkLanguageVersion: version
};
// Wrap in a timeout because we don't want it to be blocking.
setTimeout(function () {
// integrationsManager.handleImpression does not throw errors
if (integrationsManager)
integrationsManager.handleImpression(impressionData);
try { // @ts-ignore. An exception on the listeners should not break the SDK.
if (impressionListener)
impressionListener.logImpression(impressionData);
}
catch (err) {
log.error(ERROR_IMPRESSIONS_LISTENER, [err]);
}
});
};
for (var i = 0; i < impressionsLength; i++) {
_loop_1(i);
}
}
}
};
}