artifactmanager

package
v0.4.0 Latest Latest
Warning

This package is not in the latest version of its module.

 Go to latest Published: Oct 3, 2018 License: Apache-2.0 Imports: 8 Imported by: 0

Documentation

Overview

Package artifactmanager provides high-level storage API for logic runner module.

Index

Constants

This section is empty.

Variables

View Source 
var (
	ErrInvalidRef                 = errors.New("invalid reference")
	ErrClassDeactivated           = errors.New("class is deactivated")
	ErrClassDelegateAlreadyExists = errors.New("delegate for this class already exists")
	ErrClassIsNotActive           = errors.New("class is not active")
	ErrObjectDeactivated          = errors.New("object is deactivated")
	ErrInconsistentIndex          = errors.New("inconsistent index")
	ErrWrongObject                = errors.New("provided object is not and instance of provided class")
	ErrNotFound                   = errors.New("object not found")
	ErrUnexpectedReply            = errors.New("unexpected reply")
)

Custom errors possibly useful to check by artifact manager callers.

Functions

This section is empty.

Types

type ClassDescriptor 

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

ClassDescriptor represents meta info required to fetch all class data.

func (*ClassDescriptor) CodeDescriptor added in v0.0.5 

func (d *ClassDescriptor) CodeDescriptor(machinePref []core.MachineType) (core.CodeDescriptor, error)

CodeDescriptor returns descriptor for fetching object's code data.

func (*ClassDescriptor) HeadRef added in v0.0.5 

func (d *ClassDescriptor) HeadRef() *core.RecordRef

HeadRef returns head reference to represented class record.

func (*ClassDescriptor) StateRef 

func (d *ClassDescriptor) StateRef() *core.RecordRef

StateRef returns reference to represented class state record.

type CodeDescriptor added in v0.0.5 

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

CodeDescriptor represents meta info required to fetch all code data.

func (*CodeDescriptor) Code added in v0.0.5 

func (d *CodeDescriptor) Code() []byte

Code returns code for first available machine type for provided machine preference.

func (*CodeDescriptor) MachineType added in v0.0.6 

func (d *CodeDescriptor) MachineType() core.MachineType

MachineType returns first available machine type for provided machine preference.

func (*CodeDescriptor) Ref added in v0.0.5 

func (d *CodeDescriptor) Ref() *core.RecordRef

Ref returns reference to represented code record.

type LedgerArtifactManager 

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

LedgerArtifactManager provides concrete API to storage for processing module.

func NewArtifactManger added in v0.0.5 

func NewArtifactManger(db *storage.DB) (*LedgerArtifactManager, error)

NewArtifactManger creates new manager instance.

func (*LedgerArtifactManager) ActivateClass 

func (m *LedgerArtifactManager) ActivateClass(
	domain, request core.RecordRef,
) (*core.RecordRef, error)

ActivateClass creates activate class record in storage. Provided code reference will be used as a class code.

Activation reference will be this class'es identifier and referred as "class head".

func (*LedgerArtifactManager) ActivateObject added in v0.3.0 

func (m *LedgerArtifactManager) ActivateObject(
	domain, request, class, parent core.RecordRef, memory []byte,
) (*core.RecordRef, error)

ActivateObject creates activate object record in storage. Provided class reference will be used as objects class memory as memory of crated object. If memory is not provided, the class default memory will be used.

Activation reference will be this object's identifier and referred as "object head".

func (*LedgerArtifactManager) ActivateObjectDelegate added in v0.3.0 

func (m *LedgerArtifactManager) ActivateObjectDelegate(
	domain, request, class, parent core.RecordRef, memory []byte,
) (*core.RecordRef, error)

ActivateObjectDelegate is similar to ActivateObj but it created object will be parent's delegate of provided class.

func (*LedgerArtifactManager) DeactivateClass 

func (m *LedgerArtifactManager) DeactivateClass(
	domain, request, class core.RecordRef,
) (*core.RecordRef, error)

DeactivateClass creates deactivate record in storage. Provided reference should be a reference to the head of the class. If class is already deactivated, an error should be returned.

Deactivated class cannot be changed or instantiate objects.

func (*LedgerArtifactManager) DeactivateObject added in v0.3.0 

func (m *LedgerArtifactManager) DeactivateObject(
	domain, request, object core.RecordRef,
) (*core.RecordRef, error)

DeactivateObject creates deactivate object record in storage. Provided reference should be a reference to the head of the object. If object is already deactivated, an error should be returned.

Deactivated object cannot be changed.

func (*LedgerArtifactManager) DeclareType added in v0.0.5 

func (m *LedgerArtifactManager) DeclareType(
	domain, request core.RecordRef, typeDec []byte,
) (*core.RecordRef, error)

DeclareType creates new type record in storage.

Type is a contract interface. It contains one method signature.

func (*LedgerArtifactManager) DeployCode 

func (m *LedgerArtifactManager) DeployCode(
	domain, request core.RecordRef, codeMap map[core.MachineType][]byte,
) (*core.RecordRef, error)

DeployCode creates new code record in storage.

Code records are used to activate class or as migration code for an object.

func (*LedgerArtifactManager) GetClass added in v0.3.0 

func (m *LedgerArtifactManager) GetClass(head core.RecordRef, state *core.RecordRef) (core.ClassDescriptor, error)

GetClass returns descriptor for provided state.

If provided state is nil, the latest state will be returned (with deactivation check). Returned descriptor will provide methods for fetching all related data.

func (*LedgerArtifactManager) GetCode added in v0.0.5 

func (m *LedgerArtifactManager) GetCode(
	code core.RecordRef, machinePref []core.MachineType,
) (core.CodeDescriptor, error)

GetCode returns code from code record by provided reference according to provided machine preference.

This method is used by VM to fetch code for execution.

func (*LedgerArtifactManager) GetDelegate added in v0.3.0 

func (m *LedgerArtifactManager) GetDelegate(head, asClass core.RecordRef) (*core.RecordRef, error)

GetDelegate returns provided object's delegate reference for provided class.

Object delegate should be previously created for this object. If object delegate does not exist, an error will be returned.

func (*LedgerArtifactManager) GetObject added in v0.3.0 

func (m *LedgerArtifactManager) GetObject(head core.RecordRef, state *core.RecordRef) (core.ObjectDescriptor, error)

GetObject returns descriptor for provided state.

If provided state is nil, the latest state will be returned (with deactivation check). Returned descriptor will provide methods for fetching all related data. 

func (m *LedgerArtifactManager) Link(components core.Components) error

Link links external components.

func (*LedgerArtifactManager) RootRef added in v0.0.6 

func (m *LedgerArtifactManager) RootRef() *core.RecordRef

RootRef returns the root record reference.

Root record is the parent for all top-level records.

func (*LedgerArtifactManager) UpdateClass 

func (m *LedgerArtifactManager) UpdateClass(
	domain, request, class, code core.RecordRef, migrations []core.RecordRef,
) (*core.RecordRef, error)

UpdateClass creates amend class record in storage. Provided reference should be a reference to the head of the class. Migrations are references to code records.

Returned reference will be the latest class state (exact) reference. Migration code will be executed by VM to migrate objects memory in the order they appear in provided slice.

func (*LedgerArtifactManager) UpdateObject added in v0.3.0 

func (m *LedgerArtifactManager) UpdateObject(
	domain, request, object core.RecordRef, memory []byte,
) (*core.RecordRef, error)

UpdateObject creates amend object record in storage. Provided reference should be a reference to the head of the object. Provided memory well be the new object memory.

Returned reference will be the latest object state (exact) reference.

type MessageHandler added in v0.4.0 

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

MessageHandler processes messages for local storage interaction.

func NewMessageHandler added in v0.4.0 

func NewMessageHandler(db *storage.DB) (*MessageHandler, error)

NewMessageHandler creates new handler. 

func (h *MessageHandler) Link(components core.Components) error

Link links external components.

type ObjectDescriptor 

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

ObjectDescriptor represents meta info required to fetch all object data.

func (*ObjectDescriptor) Children added in v0.3.0 

func (d *ObjectDescriptor) Children() core.RefIterator

Children returns object's children references.

func (*ObjectDescriptor) ClassDescriptor added in v0.0.5 

func (d *ObjectDescriptor) ClassDescriptor(state *core.RecordRef) (core.ClassDescriptor, error)

ClassDescriptor returns descriptor for fetching object's class data.

func (*ObjectDescriptor) HeadRef added in v0.0.5 

func (d *ObjectDescriptor) HeadRef() *core.RecordRef

HeadRef returns reference to represented object record.

func (*ObjectDescriptor) Memory added in v0.0.5 

func (d *ObjectDescriptor) Memory() []byte

Memory fetches latest memory of the object known to storage.

func (*ObjectDescriptor) StateRef 

func (d *ObjectDescriptor) StateRef() *core.RecordRef

StateRef returns reference to object state record.

type RefIterator added in v0.0.6 

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

RefIterator implements core.RefIterator.

func (*RefIterator) HasNext added in v0.0.6 

func (i *RefIterator) HasNext() bool

HasNext checks if any elements left in iterator.

func (*RefIterator) Next added in v0.0.6 

func (i *RefIterator) Next() (core.RecordRef, error)

Next returns next element.

Source Files

View all Source files

Jump to

Keyboard shortcuts

? : This menu
/ : Search site
f or F : Jump to
y or Y : Canonical URL
go.dev uses cookies from Google to deliver and enhance the quality of its services and to analyze traffic. Learn more.