support migration collection partions

core/common/constant.go

@@ -62,3 +62,4 @@ const SUB_FILE_SIZE = 1024 * 1024 * 300
 
 const UPSERT = "upsert"
 const MILVUS_META_FD = "$meta"
+const DEFAULT_PARTITION_NAME = "_default"

core/common/param.go

@@ -27,6 +27,8 @@ type CollectionParam struct {
 	FileMapKey string
 }
 type CollectionInfo struct {
-	Param  *CollectionParam
-	Fields []*entity.Field
+	Param        *CollectionParam
+	Fields       []*entity.Field
+	Partitions   []*entity.Partition
+	PartitionKey string
 }

core/dbclient/cus_field_milvus2x.go

@@ -56,6 +56,8 @@ func (cus *CustomFieldMilvus2x) createCollection(ctx context.Context, collection
 		zap.Any("fields", collectionInfo.Fields),
 		zap.Bool("dynamicField", collectionInfo.Param.EnableDynamicField),
 		zap.Bool("autoId", collectionInfo.Param.AutoId),
+		zap.String("partitionKey", collectionInfo.PartitionKey),
+		zap.Any("partitions", collectionInfo.Partitions),
 		zap.String("description", collectionInfo.Param.Description))
 	// schema
 	schema := &entity.Schema{
@@ -77,6 +79,19 @@ func (cus *CustomFieldMilvus2x) createCollection(ctx context.Context, collection
 			zap.String("collection", collectionInfo.Param.CollectionName), zap.Error(err))
 		return err
 	}
+	if collectionInfo.PartitionKey == "" && collectionInfo.Partitions != nil {
+		for _, partition := range collectionInfo.Partitions {
+			if partition.Name == common.DEFAULT_PARTITION_NAME {
+				continue
+			}
+			err := cus.Milvus2x.milvus.CreatePartition(ctx, collectionInfo.Param.CollectionName, partition.Name)
+			if err != nil {
+				log.Error("Create custom field milvus2x Collection Partition error", zap.String("collection", collectionInfo.Param.CollectionName),
+					zap.String("partitionName", partition.Name), zap.Error(err))
+				return err
+			}
+		}
+	}
 	return nil
 }
 

core/transform/milvus2x/convert/milvus2x_convert.go

@@ -21,8 +21,19 @@ func ToMilvusParam(ctx context.Context, collCfg *milvus2xtype.CollectionCfg, mil
 	//当source是开启动态列表，并且 target也打开动态列属性，则动态列需要迁移(DynamicField=true)
 	collCfg.DynamicField = srcCollEntity.Schema.EnableDynamicField && !collCfg.MilvusCfg.CloseDynamicField
 
+	//partition key
+	partitionKey := getPartitionKey(srcCollEntity)
+	//partition
+	var partitions []*entity.Partition = nil
+	if partitionKey == "" {
+		partitions, err = milvus2xCli.VerCli.ShowPartitions(ctx, collCfg.Collection)
+		if err != nil {
+			return nil, err
+		}
+	}
+
 	log.Info("milvus2x source collection_schema", zap.Bool("DynamicFieldStatus", collCfg.DynamicField),
-		zap.String("Collection", collCfg.Collection))
+		zap.String("Collection", collCfg.Collection), zap.String("PartitionKey", partitionKey), zap.Any("Partitions", partitions))
 
 	fields, err := ToMilvusFields(srcCollEntity, collCfg)
 	if err != nil {
@@ -54,7 +65,17 @@ func ToMilvusParam(ctx context.Context, collCfg *milvus2xtype.CollectionCfg, mil
 	if err != nil {
 		return nil, err
 	}
-	return &common.CollectionInfo{Param: param, Fields: fields}, err
+
+	return &common.CollectionInfo{Param: param, Fields: fields, Partitions: partitions, PartitionKey: partitionKey}, err
+}
+
+func getPartitionKey(collEntity *entity.Collection) string {
+	for _, field := range collEntity.Schema.Fields {
+		if field.IsPartitionKey {
+			return field.Name
+		}
+	}
+	return common.EMPTY
 }
 
 func GetMilvusConsistencyLevel(collCfg *milvus2xtype.CollectionCfg, collEntity *entity.Collection) (*entity.ConsistencyLevel, error) {

storage/milvus2x/base.go

@@ -16,6 +16,7 @@ type Milvus2xVersClient interface {
 	IterateNext(ctx context.Context) (*Milvus2xData, error)
 	Close() error
 	DescCollection(ctx context.Context, collectionName string) (*entity.Collection, error)
+	ShowPartitions(ctx context.Context, collectionName string) ([]*entity.Partition, error)
 }
 
 type Milvus2xData struct {

storage/milvus2x/milvus2_3_ver.go

@@ -134,6 +134,14 @@ func (milvus23 *Milvus23VerClient) DescCollection(ctx context.Context, collectio
 	return collEntity, nil
 }
 
+func (milvus23 *Milvus23VerClient) ShowPartitions(ctx context.Context, collectionName string) ([]*entity.Partition, error) {
+	partition, err := milvus23._milvus.ShowPartitions(ctx, collectionName)
+	if err != nil {
+		return nil, err
+	}
+	return partition, nil
+}
+
 // 这里统一给source创建milvus client, 和target区分开
 func _createMilvus23VerClient(cfg *config.Milvus2xConfig) (*Milvus23VerClient, error) {