Increase use of pointers in CORPUS package

corpus/parse.go

@@ -10,10 +10,13 @@ import (
 )
 
 // Accepts CORPUS data as a byte array and formats it ready for database insertion
-func parseCorpusData(jsonData *[]byte) ([]database.CorpusEntry, error) {
-	log.Msg.Info("Unmarshalling CORPUS Data")
+func parseCorpusData(jsonData *[]byte) (*[]database.CorpusEntry, error) {
+	log.Msg.Debug("Starting CORPUS Data parsing")
 
+	// Initialise data structure
 	var dataMap map[string]interface{}
+
+	// Create JSON
 	err := json.Unmarshal(*jsonData, &dataMap)
 	if err != nil {
 		log.Msg.Error("Unable to unmarshal CORPUS data", zap.Error(err))
@@ -51,11 +54,11 @@ func parseCorpusData(jsonData *[]byte) ([]database.CorpusEntry, error) {
 		corpusEntries = append(corpusEntries, corpusEntry)
 	}
 
-	return corpusEntries, nil
+	return &corpusEntries, nil
 }
 
 // Removes empty fields from CORPUS entries
-func pruneCorpusEntries(corpusEntries []database.CorpusEntry) []database.CorpusEntry {
+func pruneCorpusEntries(corpusEntries []database.CorpusEntry) *[]database.CorpusEntry {
 	for i := range corpusEntries {
 		if corpusEntries[i].CRS == " " {
 			corpusEntries[i].CRS = ""
@@ -74,5 +77,5 @@ func pruneCorpusEntries(corpusEntries []database.CorpusEntry) []database.CorpusE
 		}
 	}
 
-	return corpusEntries
+	return &corpusEntries
 }

corpus/stations.go

@@ -3,10 +3,10 @@ package corpus
 import "git.fjla.uk/owlboard/go-types/pkg/database"
 
 // Removes non-station entities from the CORPUS Data, ready for insertion to the database (stations collection)
-func createStationEntries(corpusData []database.CorpusEntry) []database.StationEntry {
+func createStationEntries(corpusData *[]database.CorpusEntry) *[]database.StationEntry {
 	var stationEntries []database.StationEntry
 
-	for _, entry := range corpusData {
+	for _, entry := range *corpusData {
 		if entry.CRS != "" {
 			stationEntry := database.StationEntry{
 				CRS:     entry.CRS,
@@ -19,5 +19,5 @@ func createStationEntries(corpusData []database.CorpusEntry) []database.StationE
 		}
 	}
 
-	return stationEntries
+	return &stationEntries
 }

corpus/update.go

@@ -22,7 +22,7 @@ func RunCorpusUpdate(cfg *helpers.Configuration) error {
 		return err
 	}
 
-	corpusData := pruneCorpusEntries(unsortedCorpusData)
+	corpusData := pruneCorpusEntries(*unsortedCorpusData)
 	stationData := createStationEntries(corpusData)
 
 	if err := dbAccess.DropCollection(dbAccess.CorpusCollection); err != nil {