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identity.go
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identity.go
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package identity
import (
"compress/gzip"
"context"
"database/sql"
"fmt"
"io"
"os"
"path/filepath"
"strings"
"time"
"github.com/lib/pq"
"github.com/rudderlabs/rudder-server/config"
"github.com/rudderlabs/rudder-server/services/filemanager"
"github.com/rudderlabs/rudder-server/utils/logger"
"github.com/rudderlabs/rudder-server/utils/misc"
warehouseutils "github.com/rudderlabs/rudder-server/warehouse/utils"
)
var pkgLogger logger.Logger
func init() {
pkgLogger = logger.NewLogger().Child("warehouse").Child("identity")
}
type WarehouseManager interface {
DownloadIdentityRules(*misc.GZipWriter) error
}
type HandleT struct {
Warehouse warehouseutils.Warehouse
DbHandle *sql.DB
Uploader warehouseutils.UploaderI
UploadID int64
WarehouseManager WarehouseManager
}
func (idr *HandleT) mergeRulesTable() string {
return warehouseutils.IdentityMergeRulesTableName(idr.Warehouse)
}
func (idr *HandleT) mappingsTable() string {
return warehouseutils.IdentityMappingsTableName(idr.Warehouse)
}
func (idr *HandleT) whMergeRulesTable() string {
return warehouseutils.ToProviderCase(idr.Warehouse.Destination.DestinationDefinition.Name, warehouseutils.IdentityMergeRulesTable)
}
func (idr *HandleT) whMappingsTable() string {
return warehouseutils.ToProviderCase(idr.Warehouse.Destination.DestinationDefinition.Name, warehouseutils.IdentityMappingsTable)
}
func (idr *HandleT) applyRule(txn *sql.Tx, ruleID int64, gzWriter *misc.GZipWriter) (totalRowsModified int, err error) {
sqlStatement := fmt.Sprintf(`SELECT merge_property_1_type, merge_property_1_value, merge_property_2_type, merge_property_2_value FROM %s WHERE id=%v`, idr.mergeRulesTable(), ruleID)
var prop1Val, prop2Val, prop1Type, prop2Type sql.NullString
err = txn.QueryRow(sqlStatement).Scan(&prop1Type, &prop1Val, &prop2Type, &prop2Val)
if err != nil {
return
}
var rudderIDs []string
var additionalClause string
if prop2Val.Valid && prop2Type.Valid {
additionalClause = fmt.Sprintf(`OR (merge_property_type='%s' AND merge_property_value=%s)`, prop2Type.String, misc.QuoteLiteral(prop2Val.String))
}
sqlStatement = fmt.Sprintf(`SELECT ARRAY_AGG(DISTINCT(rudder_id)) FROM %s WHERE (merge_property_type='%s' AND merge_property_value=%s) %s`, idr.mappingsTable(), prop1Type.String, misc.QuoteLiteral(prop1Val.String), additionalClause)
pkgLogger.Debugf(`IDR: Fetching all rudder_id's corresponding to the merge_rule: %v`, sqlStatement)
err = txn.QueryRow(sqlStatement).Scan(pq.Array(&rudderIDs))
if err != nil {
pkgLogger.Errorf("IDR: Error fetching all rudder_id's corresponding to the merge_rule: %v\nwith Error: %v", sqlStatement, err)
return
}
currentTimeString := time.Now().Format(misc.RFC3339Milli)
var rows [][]string
// if no rudder_id is found with properties in merge_rule, create a new one
// else if only one rudder_id is found with properties in merge_rule, use that rudder_id
// else create a new rudder_id and assign it to all properties found with properties in the merge_rule
if len(rudderIDs) <= 1 {
// generate new one and assign to these two
var rudderID string
if len(rudderIDs) == 0 {
rudderID = misc.FastUUID().String()
} else {
rudderID = rudderIDs[0]
}
row1 := []string{prop1Type.String, prop1Val.String, rudderID, currentTimeString}
rows = append(rows, row1)
row1Values := misc.SingleQuoteLiteralJoin(row1)
var row2Values string
if prop2Val.Valid && prop2Type.Valid {
row2 := []string{prop2Type.String, prop2Val.String, rudderID, currentTimeString}
rows = append(rows, row2)
row2Values = fmt.Sprintf(`, (%s)`, misc.SingleQuoteLiteralJoin(row2))
}
sqlStatement = fmt.Sprintf(`INSERT INTO %s (merge_property_type, merge_property_value, rudder_id, updated_at) VALUES (%s) %s ON CONFLICT ON CONSTRAINT %s DO NOTHING`, idr.mappingsTable(), row1Values, row2Values, warehouseutils.IdentityMappingsUniqueMappingConstraintName(idr.Warehouse))
pkgLogger.Debugf(`IDR: Inserting properties from merge_rule into mappings table: %v`, sqlStatement)
_, err = txn.Exec(sqlStatement)
if err != nil {
pkgLogger.Errorf(`IDR: Error inserting properties from merge_rule into mappings table: %v`, err)
return
}
} else {
// generate new one and update all
newID := rudderIDs[0]
row1 := []string{prop1Type.String, prop1Val.String, newID, currentTimeString}
rows = append(rows, row1)
row1Values := misc.SingleQuoteLiteralJoin(row1)
var row2Values string
if prop2Val.Valid && prop2Type.Valid {
row2 := []string{prop2Type.String, prop2Val.String, newID, currentTimeString}
rows = append(rows, row2)
row2Values = fmt.Sprintf(`, (%s)`, misc.SingleQuoteLiteralJoin(row2))
}
quotedRudderIDs := misc.SingleQuoteLiteralJoin(rudderIDs)
sqlStatement := fmt.Sprintf(`SELECT merge_property_type, merge_property_value FROM %s WHERE rudder_id IN (%v)`, idr.mappingsTable(), quotedRudderIDs)
pkgLogger.Debugf(`IDR: Get all merge properties from mapping table with rudder_id's %v: %v`, quotedRudderIDs, sqlStatement)
var tableRows *sql.Rows
tableRows, err = txn.Query(sqlStatement)
if err != nil {
return
}
for tableRows.Next() {
var mergePropType, mergePropVal string
err = tableRows.Scan(&mergePropType, &mergePropVal)
if err != nil {
return
}
row := []string{mergePropType, mergePropVal, newID, currentTimeString}
rows = append(rows, row)
}
sqlStatement = fmt.Sprintf(`UPDATE %s SET rudder_id='%s', updated_at='%s' WHERE rudder_id IN (%v)`, idr.mappingsTable(), newID, currentTimeString, misc.SingleQuoteLiteralJoin(rudderIDs[1:]))
var res sql.Result
res, err = txn.Exec(sqlStatement)
if err != nil {
return
}
affectedRowCount, _ := res.RowsAffected()
pkgLogger.Debugf(`IDR: Updated rudder_id for all properties in mapping table. Updated %v rows: %v `, affectedRowCount, sqlStatement)
sqlStatement = fmt.Sprintf(`INSERT INTO %s (merge_property_type, merge_property_value, rudder_id, updated_at) VALUES (%s) %s ON CONFLICT ON CONSTRAINT %s DO NOTHING`, idr.mappingsTable(), row1Values, row2Values, warehouseutils.IdentityMappingsUniqueMappingConstraintName(idr.Warehouse))
pkgLogger.Debugf(`IDR: Insert new mappings into %s: %v`, idr.mappingsTable(), sqlStatement)
_, err = txn.Exec(sqlStatement)
if err != nil {
return
}
}
columnNames := []string{"merge_property_type", "merge_property_value", "rudder_id", "updated_at"}
for _, row := range rows {
eventLoader := warehouseutils.GetNewEventLoader(idr.Warehouse.Type, idr.Uploader.GetLoadFileType(), gzWriter)
// TODO : support add row for parquet loader
eventLoader.AddRow(columnNames, row)
data, _ := eventLoader.WriteToString()
gzWriter.WriteGZ(data)
}
return len(rows), err
}
func (idr *HandleT) addRules(txn *sql.Tx, loadFileNames []string, gzWriter *misc.GZipWriter) (ids []int64, err error) {
// add rules from load files into temp table
// use original table to delete redundant ones from temp table
// insert from temp table into original table
mergeRulesStagingTable := fmt.Sprintf(`rudder_identity_merge_rules_staging_%s`, warehouseutils.RandHex())
sqlStatement := fmt.Sprintf(`CREATE TEMP TABLE %s
ON COMMIT DROP
AS SELECT * FROM %s
WITH NO DATA;`, mergeRulesStagingTable, idr.mergeRulesTable())
pkgLogger.Infof(`IDR: Creating temp table %s in postgres for loading %s: %v`, mergeRulesStagingTable, idr.mergeRulesTable(), sqlStatement)
_, err = txn.Exec(sqlStatement)
if err != nil {
pkgLogger.Errorf(`IDR: Error creating temp table %s in postgres: %v`, mergeRulesStagingTable, err)
return
}
sortedColumnNames := []string{"merge_property_1_type", "merge_property_1_value", "merge_property_2_type", "merge_property_2_value", "id"}
stmt, err := txn.Prepare(pq.CopyIn(mergeRulesStagingTable, sortedColumnNames...))
if err != nil {
pkgLogger.Errorf(`IDR: Error starting bulk copy using CopyIn: %v`, err)
return
}
var rowID int
for _, loadFileName := range loadFileNames {
var gzipFile *os.File
gzipFile, err = os.Open(loadFileName)
if err != nil {
pkgLogger.Errorf(`IDR: Error opening downloaded load file at %s: %v`, loadFileName, err)
return
}
defer gzipFile.Close()
var gzipReader *gzip.Reader
gzipReader, err = gzip.NewReader(gzipFile)
if err != nil {
pkgLogger.Errorf(`IDR: Error reading downloaded load file at %s: %v`, loadFileName, err)
return
}
defer gzipReader.Close()
eventReader := warehouseutils.NewEventReader(gzipReader, idr.Warehouse.Type)
columnNames := []string{"merge_property_1_type", "merge_property_1_value", "merge_property_2_type", "merge_property_2_value"}
for {
var record []string
record, err = eventReader.Read(columnNames)
if err != nil {
if err == io.EOF {
break
}
pkgLogger.Errorf("IDR: Error while reading merge rule file %s for loading in staging table locally:%s: %v", loadFileName, mergeRulesStagingTable, err)
return
}
var recordInterface [5]interface{}
for idx, value := range record {
if strings.TrimSpace(value) != "" {
recordInterface[idx] = value
}
}
// add rowID which allows us to insert in same order from staging to original merge _rules table
rowID++
recordInterface[4] = rowID
_, err = stmt.Exec(recordInterface[:]...)
if err != nil {
pkgLogger.Errorf("IDR: Error while adding rowID to merge_rules table: %v", err)
return
}
}
}
_, err = stmt.Exec()
if err != nil {
pkgLogger.Errorf(`IDR: Error bulk copy using CopyIn: %v for uploadID: %v`, err, idr.UploadID)
return
}
sqlStatement = fmt.Sprintf(`DELETE FROM %s AS staging
USING %s original
WHERE
(original.merge_property_1_type = staging.merge_property_1_type)
AND
(original.merge_property_1_value = staging.merge_property_1_value)
AND
(original.merge_property_2_type = staging.merge_property_2_type)
AND
(original.merge_property_2_value = staging.merge_property_2_value)`,
mergeRulesStagingTable, idr.mergeRulesTable())
pkgLogger.Infof(`IDR: Deleting from staging table %s using %s: %v`, mergeRulesStagingTable, idr.mergeRulesTable(), sqlStatement)
_, err = txn.Exec(sqlStatement)
if err != nil {
pkgLogger.Errorf(`IDR: Error deleting from staging table %s using %s: %v`, mergeRulesStagingTable, idr.mergeRulesTable(), err)
return
}
// write merge rules to file to be uploaded to warehouse in later steps
err = idr.writeTableToFile(mergeRulesStagingTable, txn, gzWriter)
if err != nil {
pkgLogger.Errorf(`IDR: Error writing staging table %s to file: %v`, mergeRulesStagingTable, err)
return
}
// select and insert distinct combination of merge rules and sort them by order in which they were added
sqlStatement = fmt.Sprintf(`INSERT INTO %s
(merge_property_1_type, merge_property_1_value, merge_property_2_type, merge_property_2_value)
SELECT merge_property_1_type, merge_property_1_value, merge_property_2_type, merge_property_2_value FROM
(
SELECT DISTINCT ON (
merge_property_1_type, merge_property_1_value, merge_property_2_type, merge_property_2_value
) id, merge_property_1_type, merge_property_1_value, merge_property_2_type, merge_property_2_value
FROM %s
) t
ORDER BY id ASC RETURNING id`, idr.mergeRulesTable(), mergeRulesStagingTable)
pkgLogger.Infof(`IDR: Inserting into %s from %s: %v`, idr.mergeRulesTable(), mergeRulesStagingTable, sqlStatement)
rows, err := txn.Query(sqlStatement)
if err != nil {
pkgLogger.Errorf(`IDR: Error inserting into %s from %s: %v`, idr.mergeRulesTable(), mergeRulesStagingTable, err)
return
}
for rows.Next() {
var id int64
err = rows.Scan(&id)
if err != nil {
pkgLogger.Errorf(`IDR: Error reading id from inserted column in %s from %s: %v`, idr.mergeRulesTable(), mergeRulesStagingTable, err)
return
}
ids = append(ids, id)
}
pkgLogger.Debugf(`IDR: Number of merge rules inserted for uploadID %v : %v`, idr.UploadID, len(ids))
return ids, nil
}
func (idr *HandleT) writeTableToFile(tableName string, txn *sql.Tx, gzWriter *misc.GZipWriter) (err error) {
batchSize := int64(500)
sqlStatement := fmt.Sprintf(`SELECT COUNT(*) FROM %s`, tableName)
var totalRows int64
err = txn.QueryRow(sqlStatement).Scan(&totalRows)
if err != nil {
return
}
var offset int64
for {
sqlStatement = fmt.Sprintf(`SELECT merge_property_1_type, merge_property_1_value, merge_property_2_type, merge_property_2_value FROM %s LIMIT %d OFFSET %d`, tableName, batchSize, offset)
var rows *sql.Rows
rows, err = txn.Query(sqlStatement)
if err != nil {
return
}
columnNames := []string{"merge_property_1_type", "merge_property_1_value", "merge_property_2_type", "merge_property_2_value"}
for rows.Next() {
var rowData []string
eventLoader := warehouseutils.GetNewEventLoader(idr.Warehouse.Type, idr.Uploader.GetLoadFileType(), gzWriter)
var prop1Val, prop2Val, prop1Type, prop2Type sql.NullString
err = rows.Scan(
&prop1Type,
&prop1Val,
&prop2Type,
&prop2Val,
)
if err != nil {
return
}
rowData = append(rowData, prop1Type.String, prop1Val.String, prop2Type.String, prop2Val.String)
for i, columnName := range columnNames {
// TODO : use proper column type here
eventLoader.AddColumn(columnName, "", rowData[i])
}
rowString, _ := eventLoader.WriteToString()
gzWriter.WriteGZ(rowString)
}
offset += batchSize
if offset >= totalRows {
break
}
}
return
}
func (idr *HandleT) downloadLoadFiles(tableName string) ([]string, error) {
objects := idr.Uploader.GetLoadFilesMetadata(warehouseutils.GetLoadFilesOptionsT{Table: tableName})
var fileNames []string
for _, object := range objects {
objectName, err := warehouseutils.GetObjectName(object.Location, idr.Warehouse.Destination.Config, warehouseutils.ObjectStorageType(idr.Warehouse.Destination.DestinationDefinition.Name, idr.Warehouse.Destination.Config, idr.Uploader.UseRudderStorage()))
if err != nil {
pkgLogger.Errorf("IDR: Error in converting object location to object key for table:%s: %s,%v", tableName, object.Location, err)
return nil, err
}
dirName := fmt.Sprintf(`/%s/`, misc.RudderWarehouseLoadUploadsTmp)
tmpDirPath, err := misc.CreateTMPDIR()
if err != nil {
pkgLogger.Errorf("IDR: Error in creating tmp directory for downloading load file for table:%s: %s, %v", tableName, object.Location, err)
return nil, err
}
objectPath := tmpDirPath + dirName + fmt.Sprintf(`%s_%s_%d/`, idr.Warehouse.Destination.DestinationDefinition.Name, idr.Warehouse.Destination.ID, time.Now().Unix()) + objectName
err = os.MkdirAll(filepath.Dir(objectPath), os.ModePerm)
if err != nil {
pkgLogger.Errorf("IDR: Error in making tmp directory for downloading load file for table:%s: %s, %s %v", tableName, object.Location, err)
return nil, err
}
objectFile, err := os.Create(objectPath)
if err != nil {
pkgLogger.Errorf("IDR: Error in creating file in tmp directory for downloading load file for table:%s: %s, %v", tableName, object.Location, err)
return nil, err
}
storageProvider := warehouseutils.ObjectStorageType(idr.Warehouse.Destination.DestinationDefinition.Name, idr.Warehouse.Destination.Config, idr.Uploader.UseRudderStorage())
downloader, err := filemanager.DefaultFileManagerFactory.New(&filemanager.SettingsT{
Provider: storageProvider,
Config: misc.GetObjectStorageConfig(misc.ObjectStorageOptsT{
Provider: storageProvider,
Config: idr.Warehouse.Destination.Config,
UseRudderStorage: idr.Uploader.UseRudderStorage(),
WorkspaceID: idr.Warehouse.Destination.WorkspaceID,
}),
})
if err != nil {
pkgLogger.Errorf("IDR: Error in creating a file manager for :%s: , %v", idr.Warehouse.Destination.DestinationDefinition.Name, err)
return nil, err
}
err = downloader.Download(context.TODO(), objectFile, objectName)
if err != nil {
pkgLogger.Errorf("IDR: Error in downloading file in tmp directory for downloading load file for table:%s: %s, %v", tableName, object.Location, err)
return nil, err
}
fileName := objectFile.Name()
if err = objectFile.Close(); err != nil {
pkgLogger.Errorf("IDR: Error in closing downloaded file in tmp directory for downloading load file for table:%s: %s, %v", tableName, object.Location, err)
return nil, err
}
fileNames = append(fileNames, fileName)
}
return fileNames, nil
}
func (idr *HandleT) uploadFile(filePath string, txn *sql.Tx, tableName string, totalRecords int) (err error) {
outputFile, err := os.Open(filePath)
if err != nil {
panic(err)
}
storageProvider := warehouseutils.ObjectStorageType(idr.Warehouse.Destination.DestinationDefinition.Name, idr.Warehouse.Destination.Config, idr.Uploader.UseRudderStorage())
uploader, err := filemanager.DefaultFileManagerFactory.New(&filemanager.SettingsT{
Provider: storageProvider,
Config: misc.GetObjectStorageConfig(misc.ObjectStorageOptsT{
Provider: storageProvider,
Config: idr.Warehouse.Destination.Config,
UseRudderStorage: idr.Uploader.UseRudderStorage(),
}),
})
if err != nil {
pkgLogger.Errorf("IDR: Error in creating a file manager for :%s: , %v", idr.Warehouse.Destination.DestinationDefinition.Name, err)
return err
}
output, err := uploader.Upload(context.TODO(), outputFile, config.GetString("WAREHOUSE_BUCKET_LOAD_OBJECTS_FOLDER_NAME", "rudder-warehouse-load-objects"), tableName, idr.Warehouse.Source.ID, tableName)
if err != nil {
return
}
sqlStatement := fmt.Sprintf(`UPDATE %s SET location='%s', total_events=%d WHERE wh_upload_id=%d AND table_name='%s'`, warehouseutils.WarehouseTableUploadsTable, output.Location, totalRecords, idr.UploadID, warehouseutils.ToProviderCase(idr.Warehouse.Destination.DestinationDefinition.Name, tableName))
pkgLogger.Infof(`IDR: Updating load file location for table: %s: %s `, tableName, sqlStatement)
_, err = txn.Exec(sqlStatement)
if err != nil {
pkgLogger.Errorf(`IDR: Error updating load file location for table: %s: %v`, tableName, err)
}
return err
}
func (idr *HandleT) createTempGzFile(dirName string) (gzWriter misc.GZipWriter, path string) {
tmpDirPath, err := misc.CreateTMPDIR()
if err != nil {
panic(err)
}
fileExtension := warehouseutils.GetTempFileExtension(idr.Warehouse.Type)
path = tmpDirPath + dirName + fmt.Sprintf(`%s_%s/%v/`, idr.Warehouse.Destination.DestinationDefinition.Name, idr.Warehouse.Destination.ID, idr.UploadID) + misc.FastUUID().String() + "." + fileExtension
err = os.MkdirAll(filepath.Dir(path), os.ModePerm)
if err != nil {
panic(err)
}
gzWriter, err = misc.CreateGZ(path)
if err != nil {
panic(err)
}
return
}
func (idr *HandleT) processMergeRules(fileNames []string) (err error) {
txn, err := idr.DbHandle.Begin()
if err != nil {
panic(err)
}
// START: Add new merge rules to local pg table and also to file
mergeRulesFileGzWriter, mergeRulesFilePath := idr.createTempGzFile(fmt.Sprintf(`/%s/`, misc.RudderIdentityMergeRulesTmp))
defer misc.RemoveFilePaths(mergeRulesFilePath)
ruleIDs, err := idr.addRules(txn, fileNames, &mergeRulesFileGzWriter)
if err != nil {
pkgLogger.Errorf(`IDR: Error adding rules to %s: %v`, idr.mergeRulesTable(), err)
return
}
mergeRulesFileGzWriter.CloseGZ()
pkgLogger.Infof(`IDR: Added %d unique rules to %s and file`, len(ruleIDs), idr.mergeRulesTable())
// END: Add new merge rules to local pg table and also to file
// START: Add new/changed identity mappings to local pg table and also to file
mappingsFileGzWriter, mappingsFilePath := idr.createTempGzFile(fmt.Sprintf(`/%s/`, misc.RudderIdentityMappingsTmp))
defer misc.RemoveFilePaths(mappingsFilePath)
var totalMappingRecords int
for idx, ruleID := range ruleIDs {
var count int
count, err = idr.applyRule(txn, ruleID, &mappingsFileGzWriter)
if err != nil {
pkgLogger.Errorf(`IDR: Error applying rule %d in %s: %v`, ruleID, idr.mergeRulesTable(), err)
return
}
totalMappingRecords += count
if idx%1000 == 0 {
pkgLogger.Infof(`IDR: Applied %d rules out of %d. Total Mapping records added: %d. Namespace: %s, Destination: %s:%s`, idx+1, len(ruleIDs), totalMappingRecords, idr.Warehouse.Namespace, idr.Warehouse.Type, idr.Warehouse.Destination.ID)
}
}
mappingsFileGzWriter.CloseGZ()
// END: Add new/changed identity mappings to local pg table and also to file
// upload new merge rules to object storage
err = idr.uploadFile(mergeRulesFilePath, txn, idr.whMergeRulesTable(), len(ruleIDs))
if err != nil {
pkgLogger.Errorf(`IDR: Error uploading load file for %s at %s to object storage: %v`, idr.mergeRulesTable(), mergeRulesFilePath, err)
return
}
// upload new/changed identity mappings to object storage
err = idr.uploadFile(mappingsFilePath, txn, idr.whMappingsTable(), totalMappingRecords)
if err != nil {
pkgLogger.Errorf(`IDR: Error uploading load file for %s at %s to object storage: %v`, mappingsFilePath, mergeRulesFilePath, err)
return
}
err = txn.Commit()
if err != nil {
pkgLogger.Errorf(`IDR: Error committing transaction: %v`, err)
return
}
return
}
// Resolve does the below things in a single pg txn
// 1. Fetch all new merge rules added in the upload
// 2. Append to local identity merge rules table
// 3. Apply each merge rule and update local identity mapping table
// 4. Upload the diff of each table to load files for both tables
func (idr *HandleT) Resolve() (err error) {
var loadFileNames []string
defer misc.RemoveFilePaths(loadFileNames...)
loadFileNames, err = idr.downloadLoadFiles(idr.whMergeRulesTable())
if err != nil {
pkgLogger.Errorf(`IDR: Failed to download load files for %s with error: %v`, idr.mergeRulesTable(), err)
return
}
return idr.processMergeRules(loadFileNames)
}
func (idr *HandleT) ResolveHistoricIdentities() (err error) {
var loadFileNames []string
defer misc.RemoveFilePaths(loadFileNames...)
gzWriter, path := idr.createTempGzFile(fmt.Sprintf(`/%s/`, misc.RudderIdentityMergeRulesTmp))
err = idr.WarehouseManager.DownloadIdentityRules(&gzWriter)
gzWriter.CloseGZ()
if err != nil {
pkgLogger.Errorf(`IDR: Failed to download identity information from warehouse with error: %v`, err)
return
}
loadFileNames = append(loadFileNames, path)
return idr.processMergeRules(loadFileNames)
}