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diff --git a/keyserver/src/cron/cron.js b/keyserver/src/cron/cron.js
--- a/keyserver/src/cron/cron.js
+++ b/keyserver/src/cron/cron.js
@@ -6,6 +6,7 @@
import { backupDB } from './backups.js';
import { createDailyUpdatesThread } from './daily-updates.js';
+import { postMetrics } from './metrics.js';
import { postLeaderboard } from './phab-leaderboard.js';
import { updateAndReloadGeoipDB } from './update-geoip-db.js';
import { updateIdentityReservedUsernames } from './update-identity-reserved-usernames.js';
@@ -164,5 +165,18 @@
}
},
);
+ schedule.scheduleJob(
+ '0 6 * * *', // every day at 6:00 AM in the keyserver's timezone
+ async () => {
+ try {
+ await postMetrics();
+ } catch (e) {
+ console.warn(
+ 'encountered error while trying to post product metrics',
+ e,
+ );
+ }
+ },
+ );
}
}
diff --git a/keyserver/src/cron/metrics.js b/keyserver/src/cron/metrics.js
new file mode 100644
--- /dev/null
+++ b/keyserver/src/cron/metrics.js
@@ -0,0 +1,127 @@
+// @flow
+
+import bots from 'lib/facts/bots.js';
+import { messageTypes } from 'lib/types/message-types-enum.js';
+
+import createMessages from '../creators/message-creator.js';
+import { dbQuery, SQL } from '../database/database.js';
+import { createScriptViewer } from '../session/scripts.js';
+
+const metricsChannel = '80820870';
+const millisecondsPerDay = 24 * 60 * 60 * 1000;
+
+async function postMetrics() {
+ if (!process.env.RUN_COMM_TEAM_DEV_SCRIPTS) {
+ // This is a job that the Comm internal team uses
+ return;
+ }
+
+ const oneDayAgo = Date.now() - millisecondsPerDay;
+ const thirtyDaysAgo = Date.now() - millisecondsPerDay * 30;
+ const [
+ dailyActives,
+ monthlyActives,
+ oneWeekRetention,
+ twoWeekRetention,
+ retentionSinceLaunch,
+ ] = await Promise.all([
+ getActiveCountSince(oneDayAgo),
+ getActiveCountSince(thirtyDaysAgo),
+ getRetention(7),
+ getRetention(14),
+ getRetentionSinceLaunch(),
+ ]);
+
+ const metrics = {
+ 'DAUs': dailyActives,
+ 'MAUs': monthlyActives,
+ 'D7': oneWeekRetention,
+ 'D14': twoWeekRetention,
+ 'retention since launch': retentionSinceLaunch,
+ };
+ const today = new Date().toLocaleString('default', {
+ day: 'numeric',
+ month: 'long',
+ year: 'numeric',
+ });
+ const metricText =
+ `### Metrics for ${today}\n` +
+ '```\n' +
+ `${JSON.stringify(metrics, undefined, 2)}\n` +
+ '```';
+
+ const viewer = createScriptViewer(bots.commbot.userID);
+ const messageDatas = [
+ {
+ type: messageTypes.TEXT,
+ threadID: metricsChannel,
+ creatorID: bots.commbot.userID,
+ time: Date.now(),
+ text: metricText,
+ },
+ ];
+ await createMessages(viewer, messageDatas);
+}
+
+async function getActiveCountSince(time: number): Promise<number> {
+ const [result] = await dbQuery(SQL`
+ SELECT COUNT(DISTINCT u.id) AS count
+ FROM users u
+ LEFT JOIN cookies c ON c.user = u.id
+ WHERE last_used IS NOT NULL AND last_used > ${time}
+ `);
+ const [row] = result;
+ return row.count;
+}
+
+// Of the users that created their account N days ago,
+// how many were active in the last day?
+type RetentionResult = { +retainedCount: number, +totalCount: number };
+async function getRetention(daysAgo: number): Promise<RetentionResult> {
+ const startOfNDaysAgo = Date.now() - millisecondsPerDay * daysAgo;
+ const endOfNDaysAgo = Date.now() - millisecondsPerDay * (daysAgo - 1);
+ const [result] = await dbQuery(SQL`
+ SELECT u.id, MAX(c.last_used) AS lastUsed
+ FROM users u
+ LEFT JOIN cookies c ON c.user = u.id
+ WHERE u.creation_time >= ${startOfNDaysAgo}
+ AND u.creation_time < ${endOfNDaysAgo}
+ GROUP BY u.id
+ `);
+
+ const totalCount = result.length;
+
+ const oneDayAgo = Date.now() - millisecondsPerDay;
+ const retainedCount = result.filter(
+ ({ lastUsed }) => lastUsed > oneDayAgo,
+ ).length;
+
+ return { retainedCount, totalCount };
+}
+
+// We're measuring users that signed up in the 7 days following launch.
+// They count as retained if they've used Comm in the last day.
+async function getRetentionSinceLaunch(): Promise<RetentionResult> {
+ const launchDate = new Date('2024-10-03');
+ const launchDaysAgo = Math.ceil(
+ (Date.now() - launchDate.getTime()) / millisecondsPerDay,
+ );
+
+ const retentionPromises: Array<Promise<RetentionResult>> = [];
+ for (let i = 0; i < 7; i++) {
+ retentionPromises.push(getRetention(launchDaysAgo - i));
+ }
+
+ const totalRetentionResults = {
+ retainedCount: 0,
+ totalCount: 0,
+ };
+ const retentionResults = await Promise.all(retentionPromises);
+ for (const retentionResult of retentionResults) {
+ totalRetentionResults.retainedCount += retentionResult.retainedCount;
+ totalRetentionResults.totalCount += retentionResult.totalCount;
+ }
+ return totalRetentionResults;
+}
+
+export { postMetrics };

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