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Merge pull request #18018 from overleaf/revert-17906-ab-split-test-assignments-optim-pt2
Revert "[web] Store anonymous users split test assignments in new format in session" GitOrigin-RevId: 2c1a95031a9d1d99b9dfef54eb4b80264a32ba0d
This commit is contained in:
parent
bfe75c7d31
commit
14bbc65e99
5 changed files with 169 additions and 163 deletions
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@ -12,7 +12,9 @@ class SplitTestCache extends CacheLoader {
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async load() {
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Metrics.inc('split_test_get_split_test_from_mongo', 1, {})
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const splitTests = await SplitTestManager.getRuntimeTests()
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return new Map(splitTests.map(splitTest => [splitTest.name, splitTest]))
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return new Map(
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splitTests.map(splitTest => [splitTest.name, splitTest.toObject()])
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)
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}
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serialize(value) {
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@ -492,10 +492,7 @@ function _getNonSaasAssignment(splitTestName) {
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async function _getSplitTest(name) {
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const splitTests = await SplitTestCache.get('')
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const splitTest = splitTests?.get(name)
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if (splitTest && !splitTest.archived) {
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return splitTest
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}
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return splitTests?.get(name)
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}
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module.exports = {
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@ -60,7 +60,9 @@ async function getSplitTests({ name, phase, type, active, archived }) {
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async function getRuntimeTests() {
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try {
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return SplitTest.find({}).lean().exec()
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return await SplitTest.find({
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archived: { $ne: true },
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}).exec()
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} catch (error) {
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throw OError.tag(error, 'Failed to get active split tests list')
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}
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@ -9,68 +9,63 @@ const SplitTestUtils = require('./SplitTestUtils')
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const SplitTestUserGetter = require('./SplitTestUserGetter')
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const CACHE_TOMBSTONE_SPLIT_TEST_NOT_ACTIVE_FOR_USER = null
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const TOKEN_SEP = ';'
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// this is safe to use as a separator adjacent to a base64 string because Mongo object IDs
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// do not generate any padding when converted (24 hex digits = 12 bytes => multiple of 6),
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// thus do not contain any trailing `=`
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const KEY_VALUE_SEP = '='
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const ID_VERSION_SEP = '_'
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const VARIANT_DATE_SEP = ':'
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async function getAssignments(session) {
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await _convertAnonymousAssignmentsIfNeeded(session)
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if (!session.sta) {
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if (!session.splitTests && !session.sta) {
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return undefined
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}
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const assignments = {}
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const tokens = session.sta.split(TOKEN_SEP)
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const splitTests = Array.from((await SplitTestCache.get('')).values())
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for (const token of tokens) {
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try {
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if (!token.length) {
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continue
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}
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const [splitTestNameVersion, info] = token.split(KEY_VALUE_SEP)
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const [splitTestId64, versionStr] =
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splitTestNameVersion.split(ID_VERSION_SEP)
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// await _convertAnonymousAssignmentsIfNeeded(session)
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const assignments = _.clone(session.splitTests || {})
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if (session.sta) {
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const tokens = session.sta.split(';')
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const splitTests = Array.from((await SplitTestCache.get('')).values())
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for (const token of tokens) {
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try {
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if (!token.length) {
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continue
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}
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const [splitTestNameVersion, info] = token.split('=')
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const [splitTestId64, versionStr] = splitTestNameVersion.split('_')
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const splitTest = splitTests.find(
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test => splitTestId64 === _convertIdToBase64(test._id)
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)
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if (!splitTest) {
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continue
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}
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const splitTest = splitTests.find(
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test =>
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test._id.toString() ===
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new ObjectId(Buffer.from(splitTestId64, 'base64')).toString()
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)
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if (!splitTest) {
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continue
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}
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const splitTestName = splitTest.name
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const versionNumber = parseInt(versionStr)
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const [variantChar, timestampStr36] = info.split(VARIANT_DATE_SEP)
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const assignedAt = new Date(parseInt(timestampStr36, 36) * 1000)
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let variantName
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if (variantChar === 'd') {
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variantName = 'default'
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} else {
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const variantIndex = parseInt(variantChar)
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variantName =
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SplitTestUtils.getCurrentVersion(splitTest).variants[variantIndex]
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.name
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}
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const splitTestName = splitTest.name
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const versionNumber = parseInt(versionStr)
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const [variantChar, timestampStr36] = info.split(':')
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const assignedAt = new Date(parseInt(timestampStr36, 36) * 1000)
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let variantName
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if (variantChar === 'd') {
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variantName = 'default'
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} else {
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const variantIndex = parseInt(variantChar)
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variantName =
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SplitTestUtils.getCurrentVersion(splitTest).variants[variantIndex]
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.name
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}
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if (!assignments[splitTestName]) {
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assignments[splitTestName] = []
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if (!assignments[splitTestName]) {
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assignments[splitTestName] = []
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}
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assignments[splitTestName].push({
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versionNumber,
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variantName,
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phase: 'release', // anonymous users can only be exposed to tests in release phase
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assignedAt,
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})
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} catch (error) {
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logger.error(
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{ err: error, token },
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'Failed to resolve anonymous split test assignment from session'
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)
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}
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assignments[splitTestName].push({
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versionNumber,
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variantName,
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phase: 'release', // anonymous users can only be exposed to tests in release phase
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assignedAt,
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})
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} catch (error) {
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logger.error(
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{ err: error, token },
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'Failed to resolve cached anonymous split test assignments from session'
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)
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}
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}
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@ -78,23 +73,36 @@ async function getAssignments(session) {
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}
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async function appendAssignment(session, assignment) {
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await _convertAnonymousAssignmentsIfNeeded(session)
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// await _convertAnonymousAssignmentsIfNeeded(session)
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if (!session.splitTests) {
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session.splitTests = {}
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}
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if (!session.splitTests[assignment.splitTestName]) {
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session.splitTests[assignment.splitTestName] = []
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}
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const assignments = await getAssignments(session)
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if (
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!_hasExistingAssignment(
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session,
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assignment.splitTestId,
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assignment.versionNumber
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)
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!_.find(assignments[assignment.splitTestName], {
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variantName: assignment.variantName,
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versionNumber: assignment.versionNumber,
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})
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) {
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if (!session.sta) {
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session.sta = ''
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}
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const splitTests = await SplitTestCache.get('')
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const splitTest = splitTests.get(assignment.splitTestName)
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const assignmentString = _buildAssignmentString(splitTest, assignment)
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const separator = session.sta.length > 0 ? TOKEN_SEP : ''
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session.sta += `${separator}${assignmentString}`
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// if (!session.sta) {
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// session.sta = ''
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// }
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// const splitTests = await SplitTestCache.get('')
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// const splitTest = splitTests.get(assignment.splitTestName)
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// const assignmentString = _buildAssignmentString(splitTest, assignment)
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// const separator = session.sta.length > 0 ? ';' : ''
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// session.sta += `${separator}${assignmentString}`
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session.splitTests[assignment.splitTestName].push({
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variantName: assignment.variantName,
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versionNumber: assignment.versionNumber,
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phase: assignment.phase,
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assignedAt: assignment.assignedAt,
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})
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}
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}
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@ -174,63 +182,62 @@ function collectSessionStats(session) {
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JSON.stringify(session.cachedSplitTestAssignments).length
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)
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}
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if (session.sta) {
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if (session.splitTests) {
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Metrics.summary(
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'split_test_session_storage_count',
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(session.sta || '').split(';').length
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(session.sta || '').split(';').length +
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Object.keys(session.splitTests).length
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)
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Metrics.summary(
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'split_test_session_storage_size',
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(session.sta || '').length
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(session.sta || '').length + JSON.stringify(session.splitTests).length
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)
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}
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}
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async function _convertAnonymousAssignmentsIfNeeded(session) {
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if (session.splitTests) {
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const splitTests = await SplitTestCache.get('')
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if (!session.sta) {
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session.sta = ''
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}
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for (const [splitTestName, assignments] of Object.entries(
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session.splitTests
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)) {
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const splitTest = splitTests.get(splitTestName)
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for (const assignment of assignments) {
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const assignmentString = _buildAssignmentString(splitTest, assignment)
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const separator = session.sta.length > 0 ? TOKEN_SEP : ''
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session.sta += `${separator}${assignmentString}`
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}
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}
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delete session.splitTests
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}
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}
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// async function _convertAnonymousAssignmentsIfNeeded(session) {
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// if (typeof session.splitTests === 'object') {
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// const sessionAssignments = session.splitTests
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// const splitTests = await SplitTestCache.get('')
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// session.splitTests = ''
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// for (const [splitTestName, assignments] of Object.entries(
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// sessionAssignments
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// )) {
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// const splitTest = splitTests.get(splitTestName)
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// for (const assignment of assignments) {
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// const assignmentString = _buildAssignmentString(splitTest, assignment)
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// const separator = session.splitTests.length > 0 ? ';' : ''
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// session.splitTests += `${separator}${assignmentString}`
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// }
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// }
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// }
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// }
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function _hasExistingAssignment(session, splitTest, versionNumber) {
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if (!session.sta) {
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return false
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}
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const index = session.sta.indexOf(
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`${_convertIdToBase64(splitTest._id)}${ID_VERSION_SEP}${versionNumber}=`
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)
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return index >= 0
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}
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// function _hasExistingAssignment(session, splitTest, versionNumber) {
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// if (!session.sta) {
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// return false
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// }
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// const index = session.sta.indexOf(
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// `${_convertIdToBase64(splitTest._id)}_${versionNumber}=`
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// )
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// return index >= 0
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// }
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function _buildAssignmentString(splitTest, assignment) {
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const { versionNumber, variantName, assignedAt } = assignment
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const variants = SplitTestUtils.getCurrentVersion(splitTest).variants
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const splitTestId = _convertIdToBase64(splitTest._id)
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const variantChar =
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variantName === 'default'
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? 'd'
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: _.findIndex(variants, { name: variantName })
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const timestamp = Math.floor(assignedAt.getTime() / 1000).toString(36)
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return `${splitTestId}${ID_VERSION_SEP}${versionNumber}${KEY_VALUE_SEP}${variantChar}${VARIANT_DATE_SEP}${timestamp}`
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}
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// function _buildAssignmentString(splitTest, assignment) {
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// const { versionNumber, variantName, assignedAt } = assignment
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// const variants = SplitTestUtils.getCurrentVersion(splitTest).variants
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// const splitTestId = _convertIdToBase64(splitTest._id)
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// const variantChar =
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// variantName === 'default'
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// ? 'd'
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// : _.findIndex(variants, { name: variantName })
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// const timestamp = Math.floor(assignedAt.getTime() / 1000).toString(36)
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// return `${splitTestId}_${versionNumber}=${variantChar}:${timestamp}`
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// }
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function _convertIdToBase64(id) {
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return new ObjectId(id).toString('base64')
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}
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// function _convertIdToBase64(id) {
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// return new ObjectId(id).toString('base64')
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// }
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module.exports = {
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getAssignments: callbackify(getAssignments),
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@ -15,45 +15,6 @@ describe('SplitTestSessionHandler', function () {
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}
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this.SplitTestUserGetter = {}
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this.Metrics = {}
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this.SplitTestCache.get = sinon.stub().resolves(
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new Map(
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Object.entries({
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'anon-test-1': {
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_id: '661f92a4669764bb03f73e37',
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name: 'anon-test-1',
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versions: [
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{
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versionNumber: 1,
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variants: [
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{
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name: 'enabled',
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},
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],
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},
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],
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},
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'anon-test-2': {
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_id: '661f92a9d68ea711d6bf2df4',
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name: 'anon-test-2',
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versions: [
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{
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versionNumber: 1,
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variants: [
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{
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name: 'v-1',
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},
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{
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name: 'v-2',
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},
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],
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},
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],
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},
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})
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)
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)
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this.SplitTestSessionHandler = SandboxedModule.require(MODULE_PATH, {
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requires: {
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'./SplitTestCache': this.SplitTestCache,
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@ -191,6 +152,43 @@ describe('SplitTestSessionHandler', function () {
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})
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it('should merge assignments from both splitTests and sta fields', async function () {
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this.SplitTestCache.get = sinon.stub().resolves(
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new Map(
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Object.entries({
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'anon-test-1': {
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_id: '661f92a4669764bb03f73e37',
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name: 'anon-test-1',
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versions: [
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{
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versionNumber: 1,
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variants: [
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{
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name: 'enabled',
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},
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],
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},
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],
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},
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'anon-test-2': {
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_id: '661f92a9d68ea711d6bf2df4',
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name: 'anon-test-2',
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versions: [
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{
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versionNumber: 1,
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variants: [
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{
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name: 'v-1',
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},
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{
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name: 'v-2',
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},
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],
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},
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],
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},
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})
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)
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)
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const session = {
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splitTests: {
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'anon-test-1': [
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@ -225,18 +223,18 @@ describe('SplitTestSessionHandler', function () {
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},
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],
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'anon-test-2': [
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{
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variantName: 'v-2',
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versionNumber: 2,
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phase: 'release',
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assignedAt: new Date(1712858400000),
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},
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{
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variantName: 'default',
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versionNumber: 1,
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phase: 'release',
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assignedAt: new Date(1712307600000),
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},
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{
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variantName: 'v-2',
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versionNumber: 2,
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phase: 'release',
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assignedAt: new Date(1712858400000),
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},
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],
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})
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})
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