schema

package
v1.25.28 Latest Latest
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 Go to latest Published: Dec 10, 2024 License: BSD-3-Clause Imports: 21 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var (
	ErrBadRequest = errors.New("bad request")

	ErrSchema = errors.New("updating schema")
)
View Source 
var (
	ErrClassExists   = errors.New("class already exists")
	ErrClassNotFound = errors.New("class not found")
	ErrShardNotFound = errors.New("shard not found")
	ErrMTDisabled    = errors.New("multi-tenancy is not enabled")
)

Functions

func LegacySnapshot 

func LegacySnapshot(nodeID string, m map[string]types.ClassState) (*raft.SnapshotMeta, io.ReadCloser, error)

LegacySnapshot returns a ready-to-use in-memory Raft snapshot based on the provided legacy schema

func MergeProps 

func MergeProps(old, new []*models.Property) []*models.Property

MergeProps makes sure duplicates are not created by ignoring new props with the same names as old props. If property of nested type is present in both new and old slices, final property is created by merging new property into copy of old one

func NewSchema 

func NewSchema(nodeID string, shardReader shardReader) *schema

Types

type ClassInfo 

type ClassInfo struct {
	Exists            bool
	MultiTenancy      models.MultiTenancyConfig
	ReplicationFactor int
	Tenants           int
	Properties        int
	ClassVersion      uint64
	ShardVersion      uint64
}

func (*ClassInfo) Version 

func (ci *ClassInfo) Version() uint64

type Indexer 

type Indexer interface {
	AddClass(api.AddClassRequest) error
	UpdateClass(api.UpdateClassRequest) error
	DeleteClass(string) error
	AddProperty(class string, req api.AddPropertyRequest) error
	AddTenants(class string, req *api.AddTenantsRequest) error
	UpdateTenants(class string, req *api.UpdateTenantsRequest) error
	DeleteTenants(class string, req *api.DeleteTenantsRequest) error
	UpdateShardStatus(*api.UpdateShardStatusRequest) error
	GetShardsStatus(class, tenant string) (models.ShardStatusList, error)
	UpdateIndex(api.UpdateClassRequest) error

	TriggerSchemaUpdateCallbacks()

	// ReloadLocalDB reloads the local database using the latest schema.
	ReloadLocalDB(ctx context.Context, all []api.UpdateClassRequest) error

	// RestoreClassDir restores classes on the filesystem directly from the temporary class backup stored on disk.
	RestoreClassDir(class string) error
	Open(context.Context) error
	Close(context.Context) error
}

Indexer interface updates both the collection and its indices in the filesystem. This is distinct from updating metadata, which is handled through a different interface.

type LoadLegacySchema 

type LoadLegacySchema func() (map[string]types.ClassState, error)

LoadLegacySchema returns the legacy schema

type Parser 

type Parser interface {
	// ParseClassUpdate parses a class after unmarshaling by setting concrete types for the fields
	ParseClass(class *models.Class) error

	// ParseClass parses new updates by providing the current class data.
	ParseClassUpdate(class, update *models.Class) (*models.Class, error)
}

Parser parses concrete class fields after deserialization

type SaveLegacySchema 

type SaveLegacySchema func(map[string]types.ClassState) error

SaveLegacySchema saves the RAFT schema representation to the legacy storage

type SchemaManager 

type SchemaManager struct {
	// contains filtered or unexported fields
}

func NewSchemaManager 

func NewSchemaManager(nodeId string, db Indexer, parser Parser, log *logrus.Logger) *SchemaManager

func (*SchemaManager) AddClass 

func (s *SchemaManager) AddClass(cmd *command.ApplyRequest, nodeID string, schemaOnly bool, enableSchemaCallback bool) error

func (*SchemaManager) AddProperty 

func (s *SchemaManager) AddProperty(cmd *command.ApplyRequest, schemaOnly bool, enableSchemaCallback bool) error

func (*SchemaManager) AddTenants 

func (s *SchemaManager) AddTenants(cmd *command.ApplyRequest, schemaOnly bool) error

func (*SchemaManager) Close 

func (s *SchemaManager) Close(ctx context.Context) (err error)

func (*SchemaManager) DeleteClass 

func (s *SchemaManager) DeleteClass(cmd *command.ApplyRequest, schemaOnly bool, enableSchemaCallback bool) error

func (*SchemaManager) DeleteTenants 

func (s *SchemaManager) DeleteTenants(cmd *command.ApplyRequest, schemaOnly bool) error

func (*SchemaManager) Load 

func (s *SchemaManager) Load(ctx context.Context, nodeID string) error

func (*SchemaManager) NewSchemaReader 

func (s *SchemaManager) NewSchemaReader() SchemaReader

func (*SchemaManager) NewSchemaReaderWithWaitFunc 

func (s *SchemaManager) NewSchemaReaderWithWaitFunc(f func(context.Context, uint64) error) SchemaReader

func (*SchemaManager) PreApplyFilter 

func (s *SchemaManager) PreApplyFilter(req *api.ApplyRequest) error

func (*SchemaManager) QueryReadOnlyClasses 

func (sm *SchemaManager) QueryReadOnlyClasses(req *cmd.QueryRequest) ([]byte, error)

func (*SchemaManager) QuerySchema 

func (sm *SchemaManager) QuerySchema() ([]byte, error)

func (*SchemaManager) QueryShardOwner 

func (sm *SchemaManager) QueryShardOwner(req *cmd.QueryRequest) ([]byte, error)

func (*SchemaManager) QueryShardingState 

func (sm *SchemaManager) QueryShardingState(req *cmd.QueryRequest) ([]byte, error)

func (*SchemaManager) QueryTenants 

func (sm *SchemaManager) QueryTenants(req *cmd.QueryRequest) ([]byte, error)

func (*SchemaManager) QueryTenantsShards 

func (sm *SchemaManager) QueryTenantsShards(req *cmd.QueryRequest) ([]byte, error)

func (*SchemaManager) ReloadDBFromSchema 

func (s *SchemaManager) ReloadDBFromSchema()

func (*SchemaManager) ReplaceStatesNodeName added in v1.25.12 

func (s *SchemaManager) ReplaceStatesNodeName(new string)

ReplaceStatesNodeName it update the node name inside sharding states. WARNING: this shall be used in one node cluster environments only. because it will replace the shard node name if the node name got updated only if the replication factor is 1, otherwise it's no-op

func (*SchemaManager) Restore 

func (s *SchemaManager) Restore(rc io.ReadCloser, parser Parser) error

func (*SchemaManager) RestoreClass 

func (s *SchemaManager) RestoreClass(cmd *command.ApplyRequest, nodeID string, schemaOnly bool, enableSchemaCallback bool) error

func (*SchemaManager) SetIndexer 

func (s *SchemaManager) SetIndexer(idx Indexer)

func (*SchemaManager) Snapshot 

func (s *SchemaManager) Snapshot() raft.FSMSnapshot

func (*SchemaManager) UpdateClass 

func (s *SchemaManager) UpdateClass(cmd *command.ApplyRequest, nodeID string, schemaOnly bool, enableSchemaCallback bool) error

UpdateClass modifies the vectors and inverted indexes associated with a class Other class properties are handled by separate functions

func (*SchemaManager) UpdateShardStatus 

func (s *SchemaManager) UpdateShardStatus(cmd *command.ApplyRequest, schemaOnly bool) error

func (*SchemaManager) UpdateTenants 

func (s *SchemaManager) UpdateTenants(cmd *command.ApplyRequest, schemaOnly bool) error

type SchemaReader 

type SchemaReader struct {
	// contains filtered or unexported fields
}

SchemaReader is used for retrying schema queries. It is a thin wrapper around the original schema, separating retry logic from the actual operation. Retry may be needed due to eventual consistency issues where updates might take some time to arrive at the follower.

func (SchemaReader) ClassEqual 

func (rs SchemaReader) ClassEqual(name string) string

ClassEqual returns the name of an existing class with a similar name, and "" otherwise strings.EqualFold is used to compare classes

func (SchemaReader) ClassInfo 

func (rs SchemaReader) ClassInfo(class string) (ci ClassInfo)

func (SchemaReader) ClassInfoWithVersion 

func (rs SchemaReader) ClassInfoWithVersion(ctx context.Context, class string, version uint64) (ci ClassInfo, err error)

func (SchemaReader) CopyShardingState 

func (rs SchemaReader) CopyShardingState(class string) (ss *sharding.State)

func (SchemaReader) CopyShardingStateWithVersion 

func (rs SchemaReader) CopyShardingStateWithVersion(ctx context.Context, class string, version uint64) (ss *sharding.State, err error)

func (SchemaReader) GetShardsStatus 

func (rs SchemaReader) GetShardsStatus(class, tenant string) (models.ShardStatusList, error)

func (SchemaReader) Len 

func (rs SchemaReader) Len() int

func (SchemaReader) MultiTenancy 

func (rs SchemaReader) MultiTenancy(class string) models.MultiTenancyConfig

func (SchemaReader) MultiTenancyWithVersion 

func (rs SchemaReader) MultiTenancyWithVersion(ctx context.Context, class string, version uint64) (models.MultiTenancyConfig, error)

func (SchemaReader) Read 

func (rs SchemaReader) Read(class string, reader func(*models.Class, *sharding.State) error) error

Read performs a read operation `reader` on the specified class and sharding state

func (SchemaReader) ReadOnlyClass 

func (rs SchemaReader) ReadOnlyClass(class string) (cls *models.Class)

ReadOnlyClass returns a shallow copy of a class. The copy is read-only and should not be modified.

func (SchemaReader) ReadOnlyClassWithVersion 

func (rs SchemaReader) ReadOnlyClassWithVersion(ctx context.Context, class string, version uint64) (cls *models.Class, err error)

ReadOnlyClass returns a shallow copy of a class. The copy is read-only and should not be modified.

func (SchemaReader) ReadOnlySchema 

func (rs SchemaReader) ReadOnlySchema() models.Schema

ReadOnlySchema returns a read only schema Changing the schema outside this package might lead to undefined behavior.

it creates a shallow copy of existing classes

This function assumes that class attributes are being overwritten. The properties attribute is the only one that might vary in size; therefore, we perform a shallow copy of the existing properties. This implementation assumes that individual properties are overwritten rather than partially updated

func (SchemaReader) ShardFromUUID 

func (rs SchemaReader) ShardFromUUID(class string, uuid []byte) (shard string)

ShardFromUUID returns shard name of the provided uuid

func (SchemaReader) ShardFromUUIDWithVersion 

func (rs SchemaReader) ShardFromUUIDWithVersion(ctx context.Context, class string, uuid []byte, version uint64) (shard string, err error)

ShardFromUUID returns shard name of the provided uuid

func (SchemaReader) ShardOwner 

func (rs SchemaReader) ShardOwner(class, shard string) (owner string, err error)

ShardOwner returns the node owner of the specified shard

func (SchemaReader) ShardOwnerWithVersion 

func (rs SchemaReader) ShardOwnerWithVersion(ctx context.Context, class, shard string, version uint64) (owner string, err error)

ShardOwner returns the node owner of the specified shard

func (SchemaReader) ShardReplicas 

func (rs SchemaReader) ShardReplicas(class, shard string) (nodes []string, err error)

ShardReplicas returns the replica nodes of a shard

func (SchemaReader) ShardReplicasWithVersion 

func (rs SchemaReader) ShardReplicasWithVersion(ctx context.Context, class, shard string, version uint64) (nodes []string, err error)

ShardReplicas returns the replica nodes of a shard

func (SchemaReader) States 

func (rs SchemaReader) States() map[string]types.ClassState

func (SchemaReader) TenantsShards 

func (rs SchemaReader) TenantsShards(class string, tenants ...string) (map[string]string, error)

TenantsShards returns shard name for the provided tenant and its activity status

func (SchemaReader) TenantsShardsWithVersion 

func (rs SchemaReader) TenantsShardsWithVersion(ctx context.Context, version uint64, class string, tenants ...string) (tenantShards map[string]string, err error)

TenantsShardsWithVersion returns shard name for the provided tenant and its activity status

func (SchemaReader) WaitForUpdate 

func (rs SchemaReader) WaitForUpdate(ctx context.Context, version uint64) error

type VersionedSchemaReader 

type VersionedSchemaReader struct {
	WaitForUpdate func(ctx context.Context, version uint64) error
	// contains filtered or unexported fields
}

VersionedSchemaReader is utilized to query the schema based on a specific update version. Serving as a thin wrapper around the original schema, it segregates waiting logic from the actual operation. It waits until it finds an update at least as up-to-date as the specified version. Note that updates may take some time to propagate to the follower, hence this process might take time.

func (VersionedSchemaReader) ClassEqual 

func (s VersionedSchemaReader) ClassEqual(name string) string

ClassEqual returns the name of an existing class with a similar name, and "" otherwise strings.EqualFold is used to compare classes

func (VersionedSchemaReader) ClassInfo 

func (s VersionedSchemaReader) ClassInfo(ctx context.Context,
	class string,
	v uint64,
) (ClassInfo, error)

func (VersionedSchemaReader) CopyShardingState 

func (s VersionedSchemaReader) CopyShardingState(ctx context.Context,
	class string, v uint64,
) (*sharding.State, error)

func (VersionedSchemaReader) Len 

func (s VersionedSchemaReader) Len() int

func (VersionedSchemaReader) MultiTenancy 

func (s VersionedSchemaReader) MultiTenancy(ctx context.Context,
	class string,
	v uint64,
) (models.MultiTenancyConfig, error)

func (VersionedSchemaReader) Read 

func (s VersionedSchemaReader) Read(ctx context.Context,
	class string, v uint64,
	reader func(*models.Class, *sharding.State) error,
) error

Read performs a read operation `reader` on the specified class and sharding state

func (VersionedSchemaReader) ReadOnlyClass 

func (s VersionedSchemaReader) ReadOnlyClass(ctx context.Context,
	class string,
	v uint64,
) (*models.Class, error)

ReadOnlyClass returns a shallow copy of a class. The copy is read-only and should not be modified.

func (VersionedSchemaReader) ShardFromUUID 

func (s VersionedSchemaReader) ShardFromUUID(ctx context.Context,
	class string, uuid []byte, v uint64,
) (string, error)

ShardFromUUID returns shard name of the provided uuid

func (VersionedSchemaReader) ShardOwner 

func (s VersionedSchemaReader) ShardOwner(ctx context.Context,
	class, shard string,
	v uint64,
) (string, error)

ShardOwner returns the node owner of the specified shard

func (VersionedSchemaReader) ShardReplicas 

func (s VersionedSchemaReader) ShardReplicas(
	ctx context.Context, class, shard string,
	v uint64,
) ([]string, error)

ShardReplicas returns the replica nodes of a shard

func (VersionedSchemaReader) TenantsShards 

func (s VersionedSchemaReader) TenantsShards(ctx context.Context,
	v uint64, class string, tenants ...string,
) (map[string]string, uint64, error)

TenantShard returns shard name for the provided tenant and its activity status

Source Files

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