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32 changes: 26 additions & 6 deletions scripts/migrateFromDBToES.js
Original file line number Diff line number Diff line change
Expand Up @@ -14,9 +14,10 @@ const esClient = helper.getEsClient()
/*
* Migrate records from DB to ES
* @param tableName {String} DynamoDB table name
* @param customFunction {Function} custom function to handle record
* @returns {Promise}
*/
function * migrateRecords (tableName) {
function * migrateRecords (tableName, customFunction) {
let body = []
let batchCounter = 1
const params = {
Expand All @@ -27,7 +28,8 @@ function * migrateRecords (tableName) {
const records = yield dbhelper.scanRecords(params)
logger.debug(`Number of ${tableName}s currently fetched from DB - ` + records.Items.length)
let i = 0
for (const item of records.Items) {
for (const recordItem of records.Items) {
const item = customFunction(recordItem)
// action
body.push({
index: {
Expand Down Expand Up @@ -69,12 +71,30 @@ function * migrateRecords (tableName) {

co(function * () {
const promises = []
promises.push(migrateRecords('ReviewType'))
promises.push(migrateRecords('Submission'))
promises.push(migrateRecords('Review'))
promises.push(migrateRecords('ReviewSummation'))
const reviews = []
const reviewSummations = []
promises.push(migrateRecords('ReviewType', t => t))
promises.push(migrateRecords('Review', t => {
reviews.push(t)
return t
}))
promises.push(migrateRecords('ReviewSummation', t => {
reviewSummations.push(t)
return t
}))
// Process migration in parallel
yield promises
yield migrateRecords('Submission', t => {
t.review = _.map(_.filter(reviews, ['submissionId', t.id]), r => _.omit(r, ['resource']))
t.reviewSummation = _.map(_.filter(reviewSummations, ['submissionId', t.id]), r => _.omit(r, ['resource']))
if (_.isEmpty(t.review)) {
t = _.omit(t, ['review'])
}
if (_.isEmpty(t.reviewSummation)) {
t = _.omit(t, ['reviewSummation'])
}
return t
})
}).catch((err) => {
logger.logFullError(err)
})