cif/update.go

@@ -51,15 +51,8 @@ func runCifFullDownload(cfg *helpers.Configuration) error {
 	// Set parsed to nil to encourage garbage collection
 	parsed = nil
 
-	// Clear out of date schedules
-	cutoff := time.Now().Add(-time.Hour * 24 * 7)
-	log.Debug("Attempting to remove outdated services", zap.Time("scheduleEnd before", cutoff))
-	count, err := dbAccess.RemoveOutdatedServices(cutoff)
-	if err != nil {
-		log.Warn("Out of date services not removed", zap.Error(err))
-	} else {
-		log.Info("Out of date services removed", zap.Int64("removal count", count))
-	}
+	// Create Indexes
+	dbAccess.CreateTimetableIndexes()
 
 	postTime := time.Now()
 	updateDuration := postTime.Sub(preTime)
@@ -111,11 +104,22 @@ func runCifUpdateDownload(cfg *helpers.Configuration, metadata *dbAccess.CifMeta
 		parsed = nil
 	}
 
+	// Write metadata to database
 	ok := dbAccess.PutCifMetadata(metadata, dailyUpdateType)
 	if !ok {
 		log.Warn("CIF Data updated, but metadata write failed.")
 	}
 
+	// Clear out of date schedules
+	cutoff := time.Now().Add(-time.Hour * 24 * 7)
+	log.Debug("Attempting to remove outdated services", zap.Time("scheduleEnd before", cutoff))
+	count, err := dbAccess.RemoveOutdatedServices(cutoff)
+	if err != nil {
+		log.Warn("Out of date services not removed", zap.Error(err))
+	} else {
+		log.Info("Out of date services removed", zap.Int64("removal count", count))
+	}
+
 	endTime := time.Now()
 	duration := endTime.Sub(startTime)
 	log.Info("CIF Update process ended", zap.Duration("duration", duration))

corpus/update.go

@@ -47,5 +47,9 @@ func RunCorpusUpdate(cfg *helpers.Configuration) error {
 		return err
 	}
 
+	if err := dbAccess.CreateCorpusIndexes(); err != nil {
+		log.Error("Corpus Indexes creation failed, application speed will be reduced", zap.Error(err))
+	}
+
 	return nil
 }

dbAccess/cif.go

@@ -151,3 +151,25 @@ func RemoveOutdatedServices(cutoff time.Time) (count int64, err error) {
 	count = res.DeletedCount
 	return // Automatically returns names values
 }
+
+// Creates indexes on the Timetable collection
+func CreateTimetableIndexes() error {
+	coll := MongoClient.Database(DatabaseName).Collection(TimetableCollection)
+	indexModels := []mongo.IndexModel{
+		{
+			Keys: bson.M{
+				"trainUid":          1,
+				"stpIndicator":      1,
+				"scheduleStartDate": 1,
+			},
+			Options: options.Index().SetName("delete_query"),
+		},
+	}
+
+	_, err := coll.Indexes().CreateMany(context.Background(), indexModels)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}

dbAccess/corpus.go

@@ -4,6 +4,9 @@ import (
 	"context"
 
 	"git.fjla.uk/owlboard/go-types/pkg/database"
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/mongo"
+	"go.mongodb.org/mongo-driver/mongo/options"
 )
 
 // Puts an array of Corpus Documents into the database
@@ -53,3 +56,27 @@ func convertStationsToInterfaceSlice(stationsData *[]database.StationEntry) *[]i
 	}
 	return &interfaceSlice
 }
+
+func CreateCorpusIndexes() error {
+	coll := MongoClient.Database(DatabaseName).Collection(CorpusCollection)
+	indexModels := []mongo.IndexModel{
+		{
+			Keys: bson.M{
+				"tiploc": 1,
+			},
+			Options: options.Index().SetName("tiploc"),
+		},
+		{
+			Keys: bson.M{
+				"3alpha": 1,
+			},
+			Options: options.Index().SetName("3alpha"),
+		},
+	}
+
+	_, err := coll.Indexes().CreateMany(context.Background(), indexModels)
+	if err != nil {
+		return err
+	}
+	return nil
+}