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codecombat/scripts/analytics/mongodb/queries/abTestHelpers.js

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// A/B test helper functions
// Loaded from ab*.js ab test result scripts
// Main APIs are getFunnelData() and printFunnelData()
// TODO: use levelSlugs in query if available
// TODO: Stop looking up testGroupNumber when test group data is available in analytics.log.events
// TODO: These are super slow, need to aggregate into analytics.perdays collection
var browserCountPrintThreshold = 1000;
var analyticsStringCache = {};
var analyticsStringIDCache = {};
// *** Helper functions ***
function log(str) {
str = Array.prototype.slice.call(arguments).join(' ');
print(new Date().toISOString() + " " + str);
}
function objectIdWithTimestamp(timestamp) {
// Convert string date to Date object (otherwise assume timestamp is a date)
if (typeof(timestamp) == 'string') timestamp = new Date(timestamp);
// Convert date object to hex seconds since Unix epoch
var hexSeconds = Math.floor(timestamp/1000).toString(16);
// Create an ObjectId with that hex timestamp
var constructedObjectId = ObjectId(hexSeconds + "0000000000000000");
return constructedObjectId;
}
function getAnalyticsString(strID) {
if (analyticsStringCache[strID]) return analyticsStringCache[strID];
var doc = db['analytics.strings'].findOne({_id: strID});
if (doc) {
analyticsStringCache[strID] = doc.v;
return analyticsStringCache[strID];
}
throw new Error("ERROR: Did not find analytics.strings insert for: " + str);
}
function getAnalyticsStringID(str) {
if (analyticsStringIDCache[str]) return analyticsStringIDCache[str];
var doc = db['analytics.strings'].findOne({v: str});
if (doc) {
analyticsStringIDCache[str] = doc._id;
return analyticsStringIDCache[str];
}
throw new Error("ERROR: Did not find analytics.strings insert for: " + str);
}
function getFunnelData(startDay, eventFunnel, testGroupFn, levelSlugs, logDB) {
if (!startDay || !eventFunnel || eventFunnel.length === 0 || !testGroupFn) return {};
// log('getFunnelData:');
// log(startDay);
// log(eventFunnel);
var startObj = objectIdWithTimestamp(ISODate(startDay + "T00:00:00.000Z"));
var queryParams = {$and: [{_id: {$gte: startObj}},{"event": {$in: eventFunnel}}]};
var cursor = (logDB.log || db['analytics.log.events']).find(queryParams);
log("Fetching events..");
// Map ordering: level, user, event, day
var levelUserEventMap = {};
var levelSessions = [];
var users = [];
var eventsCounted = 0;
while (cursor.hasNext()) {
var doc = cursor.next();
var created = doc._id.getTimestamp().toISOString();
var day = created.substring(0, 10);
var event = doc.event;
var properties = doc.properties;
var user = doc.user.valueOf();
var level = 'n/a';
var ls = null;
if (eventsCounted++ % 10000 == 0)
log("Counted", eventsCounted, "events, up to", created);
// TODO: Switch to properties.levelID for 'Saw Victory'
if (event === 'Saw Victory' && properties.level) level = properties.level.toLowerCase().replace(/ /g, '-');
else if (properties.levelID) level = properties.levelID;
if (levelSlugs && levelSlugs.indexOf(level) < 0) continue;
if (properties && properties.ls) {
ls = properties.ls.valueOf();
levelSessions.push(properties.ls);
}
users.push(ObjectId(user));
if (!levelUserEventMap[level]) levelUserEventMap[level] = {};
if (!levelUserEventMap[level][user]) levelUserEventMap[level][user] = {};
if (!levelUserEventMap[level][user][event]
|| levelUserEventMap[level][user][event]['day'].localeCompare(day) > 0) {
levelUserEventMap[level][user][event] = {day: day};
if (ls) {
levelUserEventMap[level][user][event]['ls'] = ls;
}
}
}
// printjson(levelUserEventMap);
// printjson(users);
log("Fetching users..");
var userGroupMap = {};
var groupSubscribedMap = {};
var countedSubscriberMap = {};
for (var userOffset = 0; userOffset < users.length; userOffset += 1000) {
cursor = db['users'].find({_id : {$in: users.slice(userOffset, userOffset + 1000)}});
while (cursor.hasNext()) {
var doc = cursor.next();
var user = doc._id.valueOf();
userGroupMap[user] = group = testGroupFn(doc.testGroupNumber);
if (!countedSubscriberMap[doc._id + ''] &&
doc.created >= ISODate(startDay + "T00:00:00.000Z") &&
doc.stripe &&
doc.stripe.customerID &&
doc.purchased &&
doc.purchased.gems &&
!doc.stripe.free
) {
countedSubscriberMap[doc._id + ''] = true;
groupSubscribedMap[group] = (groupSubscribedMap[group] || 0) + 1;
}
}
log("Fetched", Math.min(userOffset, users.length), "users");
}
// printjson(userGroupMap);
log("Fetching level sessions..");
var lsBrowserMap = {};
var userBrowserMap = {};
for (var sessionOffset = 0; sessionOffset < levelSessions.length; sessionOffset += 1000) {
cursor = db['level.sessions'].find({_id : {$in: levelSessions.slice(sessionOffset, sessionOffset + 1000)}});
while (cursor.hasNext()) {
var doc = cursor.next();
var user = doc._id.valueOf();
var browser = doc.browser;
var browserInfo = '';
if (browser && browser.platform) {
browserInfo += browser.platform;
}
if (browser && browser.name) {
browserInfo += browser.name;
}
if (browserInfo.length > 0) {
lsBrowserMap[doc._id.valueOf()] = browserInfo;
userBrowserMap[user] = browserInfo;
}
}
log("Fetched", Math.min(sessionOffset, levelSessions.length), "sessions");
}
// printjson(lsBrowserMap);
log("Mapping data..");
// Data: level, day, event
var levelDayGroupBrowserEventMap = {};
for (level in levelUserEventMap) {
for (user in levelUserEventMap[level]) {
var group = userGroupMap[user];
var browser = userBrowserMap[user] || 'unknown';
// Find first event date
var funnelStartDay = null;
var funnelStartBrowser = null;
for (event in levelUserEventMap[level][user]) {
var day = levelUserEventMap[level][user][event]['day'];
var ls = levelUserEventMap[level][user][event]['ls'];
if (lsBrowserMap[ls]) {
browser = lsBrowserMap[ls];
}
if (!levelDayGroupBrowserEventMap[level]) levelDayGroupBrowserEventMap[level] = {};
if (!levelDayGroupBrowserEventMap[level][day]) levelDayGroupBrowserEventMap[level][day] = {};
if (!levelDayGroupBrowserEventMap[level][day][group]) levelDayGroupBrowserEventMap[level][day][group] = {};
if (!levelDayGroupBrowserEventMap[level][day][group][browser]) {
levelDayGroupBrowserEventMap[level][day][group][browser] = {};
}
if (!levelDayGroupBrowserEventMap[level][day][group][browser][event]) {
levelDayGroupBrowserEventMap[level][day][group][browser][event] = 0;
}
if (eventFunnel[0] === event) {
// First event gets attributed to current date
levelDayGroupBrowserEventMap[level][day][group][browser][event]++;
funnelStartDay = day;
funnelStartBrowser = browser;
break;
}
}
if (funnelStartDay) {
// Add remaining funnel steps/events to first step's date
for (event in levelUserEventMap[level][user]) {
if (!levelDayGroupBrowserEventMap[level][funnelStartDay][group][funnelStartBrowser]) {
levelDayGroupBrowserEventMap[level][funnelStartDay][group][funnelStartBrowser] = {};
}
if (!levelDayGroupBrowserEventMap[level][funnelStartDay][group][funnelStartBrowser][event]) {
levelDayGroupBrowserEventMap[level][funnelStartDay][group][funnelStartBrowser][event] = 0;
}
if (eventFunnel[0] !== event) {
levelDayGroupBrowserEventMap[level][funnelStartDay][group][funnelStartBrowser][event]++;
}
}
// Zero remaining funnel events
for (var i = 1; i < eventFunnel.length; i++) {
var event = eventFunnel[i];
if (!levelDayGroupBrowserEventMap[level][funnelStartDay][group][funnelStartBrowser][event]) {
levelDayGroupBrowserEventMap[level][funnelStartDay][group][funnelStartBrowser][event] = 0;
}
if (!levelDayGroupBrowserEventMap[level][funnelStartDay][group][funnelStartBrowser][event]) {
levelDayGroupBrowserEventMap[level][funnelStartDay][group][funnelStartBrowser][event] = 0;
}
}
}
// Else no start event in this date range
}
}
// printjson(levelDayGroupBrowserEventMap);
log("Building results..");
var funnelData = [];
for (level in levelDayGroupBrowserEventMap) {
for (day in levelDayGroupBrowserEventMap[level]) {
for (group in levelDayGroupBrowserEventMap[level][day]) {
for (browser in levelDayGroupBrowserEventMap[level][day][group]) {
var started = 0;
var finished = 0;
for (event in levelDayGroupBrowserEventMap[level][day][group][browser]) {
if (event === eventFunnel[0]) {
started = levelDayGroupBrowserEventMap[level][day][group][browser][event];
}
else if (event === eventFunnel[eventFunnel.length - 1]) {
finished = levelDayGroupBrowserEventMap[level][day][group][browser][event];
}
}
funnelData.push({
level: level,
day: day,
group: group,
browser: browser,
started: started,
finished: finished
});
}
}
}
}
log("Sorting results..");
funnelData.sort(function (a,b) {
if (a.level !== b.level) {
return a.level < b.level ? -1 : 1;
}
else if (a.day !== b.day) {
return a.day < b.day ? -1 : 1;
}
else if (a.browser !== b.browser) {
return a.browser < b.browser ? -1 : 1;
}
return a.group < b.group ? -1 : 1;
});
log("Subscribers by group:", JSON.stringify(groupSubscribedMap, null, 2));
return funnelData;
}
function printFunnelData(funnelData, printFn) {
log("Day\t\tGroup\t\tStarted\tFinished\tCompletion Rate");
var levelBrowserGroupCounts = {};
var levelGroupCounts = {};
var groupCounts = {};
for (var i = 0; i < funnelData.length; i++) {
var level = funnelData[i].level;
var day = funnelData[i].day;
var browser = funnelData[i].browser;
var group = funnelData[i].group;
var started = funnelData[i].started;
var finished = funnelData[i].finished;
var rate = started > 0 ? finished / started * 100 : 0.0;
printFn(day, level, browser, group, started, finished, rate);
if (!levelBrowserGroupCounts[level]) levelBrowserGroupCounts[level] = {};
if (!levelBrowserGroupCounts[level][browser]) levelBrowserGroupCounts[level][browser] = {};
if (!levelBrowserGroupCounts[level][browser][group]) {
levelBrowserGroupCounts[level][browser][group] = {started: 0, finished: 0};
}
levelBrowserGroupCounts[level][browser][group]['started'] += started;
levelBrowserGroupCounts[level][browser][group]['finished'] += finished;
if (!levelGroupCounts[level]) levelGroupCounts[level] = {};
if (!levelGroupCounts[level][group]) levelGroupCounts[level][group] = {started: 0, finished: 0};
levelGroupCounts[level][group]['started'] += started;
levelGroupCounts[level][group]['finished'] += finished;
if (!groupCounts[group]) groupCounts[group] = {started: 0, finished: 0};
groupCounts[group]['started'] += started;
groupCounts[group]['finished'] += finished;
}
log("");
log("Browser totals:");
for (level in levelBrowserGroupCounts) {
for (browser in levelBrowserGroupCounts[level]) {
for (group in levelBrowserGroupCounts[level][browser]) {
var started = levelBrowserGroupCounts[level][browser][group].started;
if (started < browserCountPrintThreshold) continue;
var finished = levelBrowserGroupCounts[level][browser][group].finished;
var rate = started > 0 ? finished / started * 100 : 0.0;
printFn(null, level, browser, group, started, finished, rate);
}
}
}
log("");
log("Level totals:");
for (level in levelGroupCounts) {
for (group in levelGroupCounts[level]) {
var started = levelGroupCounts[level][group].started;
var finished = levelGroupCounts[level][group].finished;
var rate = started > 0 ? finished / started * 100 : 0.0;
printFn(null, level, null, group, started, finished, rate);
}
}
log("");
log("Group totals:");
for (group in groupCounts) {
var started = groupCounts[group].started;
var finished = groupCounts[group].finished;
var rate = started > 0 ? finished / started * 100 : 0.0;
printFn(null, null, null, group, started, finished, rate);
}
}
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