support split table for internal storage

Signed-off-by: calvin <[email protected]>

pkg/storage/internalstorage/config.go

@@ -15,8 +15,6 @@ import (
 	"gopkg.in/natefinch/lumberjack.v2"
 	"gorm.io/gorm/logger"
 	"k8s.io/klog/v2"
-
-	clusterv1alpha2 "github.com/clusterpedia-io/api/cluster/v1alpha2"
 )
 
 const (
@@ -30,7 +28,7 @@ type DivisionPolicy string
 
 const (
 	DivisionPolicyNone          DivisionPolicy = "None"
-	DivisionPolicyGroupResource DivisionPolicy = "GroupResource"
+	DivisionPolicyGroupResource DivisionPolicy = "GVR"
 	DivisionPolicyCustom        DivisionPolicy = "Custom"
 )
 
@@ -58,30 +56,12 @@ type Config struct {
 
 	Params map[string]string `yaml:"params"`
 
-	AutoMigration  *bool            `yaml:"autoMigration"` // If set to false, no tables will be created
-	DivisionPolicy DivisionPolicy   `yaml:"divisionPolicy"`
-	Mapper         []ResourceMapper `yaml:"mapper"` // Only DivisionPolicy is DivisionPolicyCustom it need to specify the mapping between resource and table
+	SkipAutoMigration bool           `yaml:"autoMigration"` // If set to false, no tables will be created
+	DivisionPolicy    DivisionPolicy `yaml:"divisionPolicy"`
 
 	Log *LogConfig `yaml:"log"`
 }
 
-type ResourceMapper struct {
-	Table     *Table                                  `yaml:"table"`
-	Resources []clusterv1alpha2.ClusterGroupResources `yaml:"resources"`
-}
-
-type Table struct {
-	Name        string       `yaml:"name"`
-	ExtraFields []ExtraField `yaml:"extraFields"`
-}
-
-type ExtraField struct {
-	Name      string `yaml:"name"`
-	PlainPath string `yaml:"plainPath"`
-	Type      string `yaml:"type"`
-	Index     string `yaml:"index"`
-}
-
 type LogConfig struct {
 	Stdout                    bool               `yaml:"stdout"`
 	Level                     string             `yaml:"level"`

pkg/storage/internalstorage/register.go

@@ -93,7 +93,11 @@ func NewStorageFactory(configPath string) (storage.StorageFactory, error) {
 	sqlDB.SetMaxOpenConns(connPool.MaxOpenConns)
 	sqlDB.SetConnMaxLifetime(connPool.ConnMaxLifetime)
 
-	return &StorageFactory{db}, nil
+	return &StorageFactory{
+		db:                db,
+		SkipAutoMigration: cfg.SkipAutoMigration,
+		DivisionPolicy:    cfg.DivisionPolicy,
+	}, nil
 }
 
 func newLogger(cfg *Config) (logger.Interface, error) {

pkg/storage/internalstorage/resource_storage.go

@@ -27,9 +27,9 @@ import (
 )
 
 type ResourceStorage struct {
-	db    *gorm.DB
-	codec runtime.Codec
-
+	db                   *gorm.DB
+	codec                runtime.Codec
+	model                interface{}
 	storageGroupResource schema.GroupResource
 	storageVersion       schema.GroupVersion
 	memoryVersion        schema.GroupVersion
@@ -116,14 +116,18 @@ func (s *ResourceStorage) Update(ctx context.Context, cluster string, obj runtim
 		updatedResource["deleted_at"] = sql.NullTime{Time: deletedAt.Time, Valid: true}
 	}
 
-	result := s.db.WithContext(ctx).Model(&Resource{}).Where(map[string]interface{}{
-		"cluster":   cluster,
-		"group":     s.storageGroupResource.Group,
-		"version":   s.storageVersion.Version,
-		"resource":  s.storageGroupResource.Resource,
-		"namespace": metaobj.GetNamespace(),
-		"name":      metaobj.GetName(),
-	}).Updates(updatedResource)
+	result := s.db.WithContext(ctx).
+		Model(s.model).
+		Where(map[string]interface{}{
+			"cluster":   cluster,
+			"group":     s.storageGroupResource.Group,
+			"version":   s.storageVersion.Version,
+			"resource":  s.storageGroupResource.Resource,
+			"namespace": metaobj.GetNamespace(),
+			"name":      metaobj.GetName(),
+		}).
+		Updates(updatedResource)
+
 	return InterpretResourceDBError(cluster, metaobj.GetName(), result.Error)
 }
 
@@ -144,14 +148,15 @@ func (s *ResourceStorage) ConvertDeletedObject(obj interface{}) (runtime.Object,
 }
 
 func (s *ResourceStorage) deleteObject(cluster, namespace, name string) *gorm.DB {
-	return s.db.Model(&Resource{}).Where(map[string]interface{}{
-		"cluster":   cluster,
-		"group":     s.storageGroupResource.Group,
-		"version":   s.storageVersion.Version,
-		"resource":  s.storageGroupResource.Resource,
-		"namespace": namespace,
-		"name":      name,
-	}).Delete(&Resource{})
+	return s.db.Where(map[string]interface{}{
+			"cluster":   cluster,
+			"group":     s.storageGroupResource.Group,
+			"version":   s.storageVersion.Version,
+			"resource":  s.storageGroupResource.Resource,
+			"namespace": namespace,
+			"name":      name,
+		}).
+		Delete(&Resource{})
 }
 
 func (s *ResourceStorage) Delete(ctx context.Context, cluster string, obj runtime.Object) error {
@@ -167,14 +172,15 @@ func (s *ResourceStorage) Delete(ctx context.Context, cluster string, obj runtim
 }
 
 func (s *ResourceStorage) genGetObjectQuery(ctx context.Context, cluster, namespace, name string) *gorm.DB {
-	return s.db.WithContext(ctx).Model(&Resource{}).Select("object").Where(map[string]interface{}{
-		"cluster":   cluster,
-		"group":     s.storageGroupResource.Group,
-		"version":   s.storageVersion.Version,
-		"resource":  s.storageGroupResource.Resource,
-		"namespace": namespace,
-		"name":      name,
-	})
+	return s.db.WithContext(ctx).Select("object").
+		Where(map[string]interface{}{
+			"cluster":   cluster,
+			"group":     s.storageGroupResource.Group,
+			"version":   s.storageVersion.Version,
+			"resource":  s.storageGroupResource.Resource,
+			"namespace": namespace,
+			"name":      name,
+		})
 }
 
 func (s *ResourceStorage) Get(ctx context.Context, cluster, namespace, name string, into runtime.Object) error {
@@ -199,7 +205,7 @@ func (s *ResourceStorage) genListObjectsQuery(ctx context.Context, opts *interna
 		result = &ResourceMetadataList{}
 	}
 
-	query := s.db.WithContext(ctx).Model(&Resource{})
+	query := s.db.WithContext(ctx)
 	query = query.Where(map[string]interface{}{
 		"group":    s.storageGroupResource.Group,
 		"version":  s.storageVersion.Version,

pkg/storage/internalstorage/resource_storage_test.go

@@ -465,7 +465,8 @@ func TestResourceStorage_Update(t *testing.T) {
 
 func newTestResourceStorage(db *gorm.DB, storageGVK schema.GroupVersionResource) *ResourceStorage {
 	return &ResourceStorage{
-		db:                   db,
+		db:                   db.Table("resources"),
+		model:                &Resource{},
 		storageGroupResource: storageGVK.GroupResource(),
 		storageVersion:       storageGVK.GroupVersion(),
 	}

pkg/storage/internalstorage/storage.go

@@ -3,6 +3,8 @@ package internalstorage
 import (
 	"context"
 	"fmt"
+	"strings"
+	"sync"
 
 	"gorm.io/gorm"
 	"k8s.io/apimachinery/pkg/runtime/schema"
@@ -12,30 +14,14 @@ import (
 )
 
 type StorageFactory struct {
-	db             *gorm.DB
-	AutoMigration  *bool
-	DivisionPolicy DivisionPolicy
-	Mapper         []ResourceMapper
+	sync.Mutex
+
+	db                *gorm.DB
+	SkipAutoMigration bool
+	DivisionPolicy    DivisionPolicy
 }
 
 func (s *StorageFactory) AutoMigrate() error {
-	if s.AutoMigration != nil && *s.AutoMigration {
-		switch s.DivisionPolicy {
-			if err := s.db.AutoMigrate(&Resource{}); err != nil {
-				return err
-			}
-		case "", DivisionPolicyNone:
-		case DivisionPolicyGroupResource:
-
-		}
-
-		if s.DivisionPolicy == "" || s.DivisionPolicy == DivisionPolicyNone {
-			if err := s.db.AutoMigrate(&Resource{}); err != nil {
-				return err
-			}
-		}
-	}
-
 	return nil
 }
 
@@ -44,10 +30,47 @@ func (s *StorageFactory) GetSupportedRequestVerbs() []string {
 }
 
 func (s *StorageFactory) NewResourceStorage(config *storage.ResourceStorageConfig) (storage.ResourceStorage, error) {
-	return &ResourceStorage{
-		db:    s.db,
-		codec: config.Codec,
+	s.Lock()
+	defer s.Unlock()
 
+	gvr := schema.GroupVersionResource{
+		Group:    config.StorageGroupResource.Group,
+		Version:  config.StorageVersion.Version,
+		Resource: config.StorageGroupResource.Resource,
+	}
+	table := s.tableName(gvr)
+
+	var model interface{}
+	switch s.DivisionPolicy {
+	case DivisionPolicyGroupResource:
+		model = &GroupVersionResource{}
+		if !s.SkipAutoMigration {
+			if exist := s.db.Migrator().HasTable(table); !exist {
+				if err := s.db.AutoMigrate(&GroupVersionResource{}); err != nil {
+					return nil, err
+				}
+
+				err := s.db.Migrator().RenameTable("groupversionresources", table)
+				if err != nil {
+					return nil, err
+				}
+			}
+		}
+	case "", DivisionPolicyNone:
+		model = &Resource{}
+		if !s.SkipAutoMigration {
+			if exist := s.db.Migrator().HasTable(table); !exist {
+				if err := s.db.AutoMigrate(&Resource{}); err != nil {
+					return nil, err
+				}
+			}
+		}
+	}
+
+	return &ResourceStorage{
+		db:                   s.db.Table(table).Model(model),
+		model:                model,
+		codec:                config.Codec,
 		storageGroupResource: config.StorageGroupResource,
 		storageVersion:       config.StorageVersion,
 		memoryVersion:        config.MemoryVersion,
@@ -64,12 +87,24 @@ func (s *StorageFactory) NewCollectionResourceStorage(cr *internal.CollectionRes
 }
 
 func (s *StorageFactory) GetResourceVersions(ctx context.Context, cluster string) (map[schema.GroupVersionResource]map[string]interface{}, error) {
+	s.Lock()
+	tables, err := s.db.Migrator().GetTables()
+	if err != nil {
+		s.Unlock()
+		return nil, err
+	}
+	s.Unlock()
+
 	var resources []Resource
-	result := s.db.WithContext(ctx).Select("group", "version", "resource", "namespace", "name", "resource_version").
-		Where(map[string]interface{}{"cluster": cluster}).
-		Find(&resources)
-	if result.Error != nil {
-		return nil, InterpretDBError(cluster, result.Error)
+	for _, table := range tables {
+		result := s.db.WithContext(ctx).
+			Table(table).
+			Select("group", "version", "resource", "namespace", "name", "resource_version").
+			Where(map[string]interface{}{"cluster": cluster}).
+			Find(&resources)
+		if result.Error != nil {
+			return nil, InterpretDBError(cluster, result.Error)
+		}
 	}
 
 	resourceversions := make(map[schema.GroupVersionResource]map[string]interface{})
@@ -91,18 +126,44 @@ func (s *StorageFactory) GetResourceVersions(ctx context.Context, cluster string
 }
 
 func (s *StorageFactory) CleanCluster(ctx context.Context, cluster string) error {
-	result := s.db.WithContext(ctx).Where(map[string]interface{}{"cluster": cluster}).Delete(&Resource{})
-	return InterpretDBError(cluster, result.Error)
+	s.Lock()
+	tables, err := s.db.Migrator().GetTables()
+	if err != nil {
+		s.Unlock()
+		return err
+	}
+	s.Unlock()
+
+	for _, table := range tables {
+		result := s.db.WithContext(ctx).Table(table).Where(map[string]interface{}{"cluster": cluster}).Delete(&Resource{})
+		if result.Error != nil {
+			return InterpretDBError(cluster, result.Error)
+		}
+	}
+
+	return nil
 }
 
 func (s *StorageFactory) CleanClusterResource(ctx context.Context, cluster string, gvr schema.GroupVersionResource) error {
-	result := s.db.WithContext(ctx).Where(map[string]interface{}{
-		"cluster":  cluster,
-		"group":    gvr.Group,
-		"version":  gvr.Version,
-		"resource": gvr.Resource,
-	}).Delete(&Resource{})
-	return InterpretDBError(fmt.Sprintf("%s/%s", cluster, gvr), result.Error)
+	err := s.db.Transaction(func(db *gorm.DB) error {
+		result := s.db.WithContext(ctx).
+			Table(s.tableName(gvr)).
+			Where(map[string]interface{}{
+				"cluster":  cluster,
+				"group":    gvr.Group,
+				"version":  gvr.Version,
+				"resource": gvr.Resource,
+			}).
+			Delete(&Resource{})
+
+		if result.Error != nil {
+			return result.Error
+		}
+
+		return nil
+	})
+
+	return InterpretDBError(fmt.Sprintf("%s/%s", cluster, gvr), err)
 }
 
 func (s *StorageFactory) GetCollectionResources(ctx context.Context) ([]*internal.CollectionResource, error) {
@@ -116,3 +177,22 @@ func (s *StorageFactory) GetCollectionResources(ctx context.Context) ([]*interna
 func (s *StorageFactory) PrepareCluster(cluster string) error {
 	return nil
 }
+
+// GenerateTableFor return table name using gvr string
+func GenerateTableFor(gvr schema.GroupVersionResource) string {
+	if gvr.Group == "" {
+		return fmt.Sprintf("%s_%s", gvr.Version, gvr.Resource)
+	}
+
+	group := strings.ReplaceAll(gvr.Group, ".", "_")
+	return fmt.Sprintf("%s_%s_%s", group, gvr.Version, gvr.Resource)
+}
+
+func (s *StorageFactory) tableName(gvr schema.GroupVersionResource) string {
+	table := "resources"
+	if s.DivisionPolicy == DivisionPolicyGroupResource {
+		table = GenerateTableFor(gvr)
+	}
+
+	return table
+}