main.go

func PopulateIndex(database, collection string, client *mongo.Client) {
	c := client.Database(database).Collection(collection)
	opts := options.CreateIndexes().SetMaxTime(10 * time.Second)
	index := yieldIndexModel()
	c.Indexes().CreateOne(context.Background(), index, opts)
	log.Println("Successfully create the index")
}

func yieldIndexModel() mongo.IndexModel {
	keys := bsonx.Doc{{Key: *key, Value: bsonx.Int32(int32(*value))}}
	index := mongo.IndexModel{}
	index.Keys = keys
	if *unique {
		index.Options = bsonx.Doc{{Key: "unique", Value: bsonx.Boolean(true)}}
	}
	return index
}