object

package
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 Go to latest Published: Dec 9, 2024 License: Apache-2.0 Imports: 21 Imported by: 40

Documentation

Index

Examples

Constants

View Source 
const (
	FilterVersion                = v2object.FilterHeaderVersion
	FilterID                     = v2object.FilterHeaderObjectID
	FilterContainerID            = v2object.FilterHeaderContainerID
	FilterOwnerID                = v2object.FilterHeaderOwnerID
	FilterPayloadChecksum        = v2object.FilterHeaderPayloadHash
	FilterType                   = v2object.FilterHeaderObjectType
	FilterPayloadHomomorphicHash = v2object.FilterHeaderHomomorphicHash
	FilterParentID               = v2object.FilterHeaderParent
	FilterSplitID                = v2object.FilterHeaderSplitID
	FilterFirstSplitObject       = v2object.ReservedFilterPrefix + "split.first"
	FilterCreationEpoch          = v2object.FilterHeaderCreationEpoch
	FilterPayloadSize            = v2object.FilterHeaderPayloadLength
)

Various header filters.

View Source 
const (
	// FilterRoot filters objects that are root: objects of TypeRegular type
	// with user data that are not system-specific. In addition to such objects, the
	// system may contain service objects that do not fall under this property
	// (like split leaves, tombstones, storage groups, etc.).
	FilterRoot = v2object.FilterPropertyRoot
	// FilterPhysical filters indivisible objects that are intended to be stored
	// on the physical devices of the system. In addition to such objects, the
	// system may contain so-called "virtual" objects that exist in the system in
	// disassembled form (like "huge" user object sliced into smaller ones).
	FilterPhysical = v2object.FilterPropertyPhy
)

Various filters to match certain object properties.

View Source 
const (
	// AttributeName is an attribute key that is commonly used to denote
	// human-friendly name.
	AttributeName = "Name"

	// AttributeFileName is an attribute key that is commonly used to denote
	// file name to be associated with the object on saving.
	AttributeFileName = "FileName"

	// AttributeFilePath is an attribute key that is commonly used to denote
	// full path to be associated with the object on saving. Should start with a
	// '/' and use '/' as a delimiting symbol. Trailing '/' should be
	// interpreted as a virtual directory marker. If an object has conflicting
	// FilePath and FileName, FilePath should have higher priority, because it
	// is used to construct the directory tree. FilePath with trailing '/' and
	// non-empty FileName attribute should not be used together.
	AttributeFilePath = "FilePath"

	// AttributeTimestamp is an attribute key that is commonly used to denote
	// user-defined local time of object creation in Unix Timestamp format.
	AttributeTimestamp = "Timestamp"

	// AttributeContentType is an attribute key that is commonly used to denote
	// MIME Content Type of object's payload.
	AttributeContentType = "Content-Type"
)
View Source 
const (
	// AttributeExpirationEpoch is a key to an object attribute that determines
	// after what epoch the object becomes expired. Objects that do not have this
	// attribute never expire.
	//
	// Reaction of NeoFS system components to the objects' 'expired' property may
	// vary. For example, in the basic scenario, expired objects are auto-deleted
	// from the storage. Detailed behavior can be found in the NeoFS Specification.
	//
	// Note that the value determines exactly the last epoch of the object's
	// relevance: for example, with the value N, the object is relevant in epoch N
	// and expired in any epoch starting from N+1.
	AttributeExpirationEpoch = object.SysAttributeExpEpoch
)

Various system attributes.

View Source 
const MaxHeaderLen = 16 << 10

MaxHeaderLen is a maximum allowed length of binary object header to be created via NeoFS API protocol.

Variables

This section is empty.

Functions

func CalculatePayloadChecksum 

func CalculatePayloadChecksum(payload []byte) checksum.Checksum

CalculatePayloadChecksum calculates and returns checksum of object payload bytes.

Types

type Attribute 

type Attribute object.Attribute

Attribute represents v2-compatible object attribute.

func NewAttribute 

func NewAttribute(key, value string) *Attribute

NewAttribute creates and initializes new Attribute.

func NewAttributeFromV2 

func NewAttributeFromV2(aV2 *object.Attribute) *Attribute

NewAttributeFromV2 wraps v2 object.Attribute message to Attribute.

Nil object.Attribute converts to nil.

func (*Attribute) Key 

func (a *Attribute) Key() string

Key returns key to the object attribute.

func (*Attribute) Marshal 

func (a *Attribute) Marshal() ([]byte, error)

Marshal marshals Attribute into a protobuf binary form.

See also Attribute.Unmarshal.

func (*Attribute) MarshalJSON 

func (a *Attribute) MarshalJSON() ([]byte, error)

MarshalJSON encodes Attribute to protobuf JSON format.

See also Attribute.UnmarshalJSON.

func (*Attribute) SetKey 

func (a *Attribute) SetKey(v string)

SetKey sets key to the object attribute.

func (*Attribute) SetValue 

func (a *Attribute) SetValue(v string)

SetValue sets value of the object attribute.

func (*Attribute) ToV2 

func (a *Attribute) ToV2() *object.Attribute

ToV2 converts Attribute to v2 object.Attribute message.

Nil Attribute converts to nil.

The value returned shares memory with the structure itself, so changing it can lead to data corruption. Make a copy if you need to change it.

func (*Attribute) Unmarshal 

func (a *Attribute) Unmarshal(data []byte) error

Unmarshal unmarshals protobuf binary representation of Attribute.

See also Attribute.Marshal.

func (*Attribute) UnmarshalJSON 

func (a *Attribute) UnmarshalJSON(data []byte) error

UnmarshalJSON decodes Attribute from protobuf JSON format.

See also Attribute.MarshalJSON.

func (*Attribute) Value 

func (a *Attribute) Value() string

Value return value of the object attribute. 

type Link v2object.Link

Link is a payload of helper objects that contain the full list of the split chain of the big NeoFS objects. It is compatible with NeoFS API V2 protocol.

Link instance can be written to the Object, see Object.WriteLink/Object.ReadLink.

func (*Link) Marshal 

func (l *Link) Marshal() []byte

Marshal encodes the Link into a NeoFS protocol binary format.

See also Link.Unmarshal.

func (*Link) Objects 

func (l *Link) Objects() []MeasuredObject

Objects returns split chain's measured objects.

See also Link.SetObjects.

func (*Link) SetObjects 

func (l *Link) SetObjects(oo []MeasuredObject)

SetObjects sets split chain's measured objects.

See also Link.Objects.

func (*Link) Unmarshal 

func (l *Link) Unmarshal(data []byte) error

Unmarshal decodes the Link from its NeoFS protocol binary representation.

See also Link.Marshal.

type Lock 

type Lock v2object.Lock

Lock represents record with locked objects. It is compatible with NeoFS API V2 protocol.

Lock instance can be written to the Object, see WriteLock/ReadLock.

func (Lock) Marshal 

func (x Lock) Marshal() []byte

Marshal encodes the Lock into a NeoFS protocol binary format.

See also Lock.Unmarshal.

func (Lock) NumberOfMembers 

func (x Lock) NumberOfMembers() int

NumberOfMembers returns number of members in lock list.

func (Lock) ReadMembers 

func (x Lock) ReadMembers(buf []oid.ID)

ReadMembers reads list of locked members.

Buffer length must not be less than Lock.NumberOfMembers.

func (*Lock) Unmarshal 

func (x *Lock) Unmarshal(data []byte) error

Unmarshal decodes the Lock from its NeoFS protocol binary representation.

See also Lock.Marshal.

func (*Lock) WriteMembers 

func (x *Lock) WriteMembers(ids []oid.ID)

WriteMembers writes list of locked members.

See also Lock.ReadMembers.

type MeasuredObject 

type MeasuredObject v2object.MeasuredObject

MeasuredObject groups object ID and its size length. It is compatible with NeoFS API V2 protocol.

func (*MeasuredObject) ObjectID 

func (m *MeasuredObject) ObjectID() oid.ID

ObjectID returns object identifier.

See also MeasuredObject.SetObjectID.

func (*MeasuredObject) ObjectSize 

func (m *MeasuredObject) ObjectSize() uint32

ObjectSize returns size of the object.

See also MeasuredObject.SetObjectSize.

func (*MeasuredObject) SetObjectID 

func (m *MeasuredObject) SetObjectID(id oid.ID)

SetObjectID sets object identifier.

See also MeasuredObject.ObjectID.

func (*MeasuredObject) SetObjectSize 

func (m *MeasuredObject) SetObjectSize(s uint32)

SetObjectSize sets size of the object.

See also MeasuredObject.ObjectSize.

type Object 

type Object object.Object

Object represents in-memory structure of the NeoFS object. Type is compatible with NeoFS API V2 protocol.

Instance can be created depending on scenario:

  • Object.InitCreation (an object to be placed in container);
  • New (blank instance, usually needed for decoding);
  • NewFromV2 (when working under NeoFS API V2 protocol).

func New 

func New() *Object

New creates and initializes blank Object.

Works similar as NewFromV2(new(Object)).

func NewFromV2 

func NewFromV2(oV2 *object.Object) *Object

NewFromV2 wraps v2 object.Object message to Object.

func (*Object) Attributes 

func (o *Object) Attributes() []Attribute

Attributes returns all object attributes.

The value returned shares memory with the structure itself, so changing it can lead to data corruption. Make a copy if you need to change it.

See also Object.SetAttributes, Object.UserAttributes.

func (*Object) CalculateAndSetID 

func (o *Object) CalculateAndSetID() error

CalculateAndSetID calculates identifier for the object and writes the result to it.

func (*Object) CalculateAndSetPayloadChecksum 

func (o *Object) CalculateAndSetPayloadChecksum()

CalculateAndSetPayloadChecksum calculates checksum of current object payload and writes it to the object.

func (*Object) CalculateID 

func (o *Object) CalculateID() (oid.ID, error)

CalculateID calculates identifier for the object.

func (*Object) CheckHeaderVerificationFields 

func (o *Object) CheckHeaderVerificationFields() error

CheckHeaderVerificationFields checks all verification fields except payload.

func (*Object) CheckVerificationFields 

func (o *Object) CheckVerificationFields() error

CheckVerificationFields checks all verification fields of the object.

func (*Object) Children 

func (o *Object) Children() []oid.ID

Children return list of the identifiers of the child objects.

See also Object.SetChildren.

func (*Object) ContainerID 

func (o *Object) ContainerID() (v cid.ID, isSet bool)

ContainerID returns identifier of the related container.

See also Object.SetContainerID.

func (Object) CopyTo 

func (o Object) CopyTo(dst *Object)

CopyTo writes deep copy of the Object to dst.

func (*Object) CreationEpoch 

func (o *Object) CreationEpoch() uint64

CreationEpoch returns epoch number in which object was created.

See also Object.SetCreationEpoch.

func (*Object) CutPayload 

func (o *Object) CutPayload() *Object

CutPayload returns Object w/ empty payload.

The value returned shares memory with the structure itself, so changing it can lead to data corruption. Make a copy if you need to change it.

func (*Object) FirstID 

func (o *Object) FirstID() (v oid.ID, isSet bool)

FirstID returns the first part of the object's split chain.

See also Object.SetFirstID.

func (*Object) HasParent 

func (o *Object) HasParent() bool

HasParent checks if parent (split ID) is present.

func (*Object) HeaderLen 

func (o *Object) HeaderLen() int

HeaderLen returns length of the binary header.

func (*Object) ID 

func (o *Object) ID() (v oid.ID, isSet bool)

ID returns object identifier.

See also Object.SetID.

func (*Object) InitCreation 

func (o *Object) InitCreation(rf RequiredFields)

InitCreation initializes the object instance with minimum set of required fields.

func (*Object) InitRelations 

func (o *Object) InitRelations()

InitRelations initializes relation field.

func (*Object) Marshal 

func (o *Object) Marshal() ([]byte, error)

Marshal marshals object into a protobuf binary form.

See also Object.Unmarshal.

func (*Object) MarshalHeaderJSON 

func (o *Object) MarshalHeaderJSON() ([]byte, error)

MarshalHeaderJSON marshals object's header into JSON format.

func (*Object) MarshalJSON 

func (o *Object) MarshalJSON() ([]byte, error)

MarshalJSON encodes object to protobuf JSON format.

See also Object.UnmarshalJSON.

func (*Object) OwnerID 

func (o *Object) OwnerID() *user.ID

OwnerID returns identifier of the object owner.

See also Object.SetOwnerID.

func (*Object) Parent 

func (o *Object) Parent() *Object

Parent returns parent object w/o payload.

See also Object.SetParent.

func (*Object) ParentID 

func (o *Object) ParentID() (v oid.ID, isSet bool)

ParentID returns identifier of the parent object.

See also Object.SetParentID.

func (*Object) Payload 

func (o *Object) Payload() []byte

Payload returns payload bytes.

The value returned shares memory with the structure itself, so changing it can lead to data corruption. Make a copy if you need to change it.

See also Object.SetPayload.

func (*Object) PayloadChecksum 

func (o *Object) PayloadChecksum() (checksum.Checksum, bool)

PayloadChecksum returns checksum of the object payload and bool that indicates checksum presence in the object.

Zero Object does not have payload checksum.

See also Object.SetPayloadChecksum.

func (*Object) PayloadHomomorphicHash 

func (o *Object) PayloadHomomorphicHash() (checksum.Checksum, bool)

PayloadHomomorphicHash returns homomorphic hash of the object payload and bool that indicates checksum presence in the object.

Zero Object does not have payload homomorphic checksum.

See also Object.SetPayloadHomomorphicHash.

func (*Object) PayloadSize 

func (o *Object) PayloadSize() uint64

PayloadSize returns payload length of the object.

See also Object.SetPayloadSize.

func (*Object) PreviousID 

func (o *Object) PreviousID() (v oid.ID, isSet bool)

PreviousID returns identifier of the previous sibling object.

See also Object.SetPreviousID. 

func (o *Object) ReadLink(l *Link) error

ReadLink reads a link from the Object. The link must not be nil. Returns an error describing incorrect format. Makes sense only if the object has TypeLink type.

See also Object.WriteLink.

func (*Object) ReadLock 

func (o *Object) ReadLock(l *Lock) error

ReadLock reads Lock from the Object. The lock must not be nil. Returns an error describing incorrect format. Makes sense only if object has TypeLock type.

See also Object.WriteLock.

func (*Object) ResetID 

func (o *Object) ResetID()

ResetID removes object identifier.

See also Object.SetID.

func (*Object) ResetParentID 

func (o *Object) ResetParentID()

ResetParentID removes identifier of the parent object.

See also Object.SetParentID.

func (*Object) ResetPreviousID 

func (o *Object) ResetPreviousID()

ResetPreviousID resets identifier of the previous sibling object.

See also Object.SetPreviousID, Object.PreviousID.

func (*Object) ResetRelations 

func (o *Object) ResetRelations()

ResetRelations removes all fields of links with other objects.

func (*Object) SessionToken 

func (o *Object) SessionToken() *session.Object

SessionToken returns token of the session within which object was created.

See also Object.SetSessionToken.

func (*Object) SetAttributes 

func (o *Object) SetAttributes(v ...Attribute)

SetAttributes sets object attributes.

func (*Object) SetChildren 

func (o *Object) SetChildren(v ...oid.ID)

SetChildren sets list of the identifiers of the child objects.

See also Object.Children.

func (*Object) SetContainerID 

func (o *Object) SetContainerID(v cid.ID)

SetContainerID sets identifier of the related container.

See also Object.ContainerID.

func (*Object) SetCreationEpoch 

func (o *Object) SetCreationEpoch(v uint64)

SetCreationEpoch sets epoch number in which object was created.

See also Object.CreationEpoch.

func (*Object) SetFirstID 

func (o *Object) SetFirstID(id oid.ID)

SetFirstID sets the first part's ID of the object's split chain.

See also Object.FirstID.

func (*Object) SetID 

func (o *Object) SetID(v oid.ID)

SetID sets object identifier.

See also Object.ID.

func (*Object) SetIDWithSignature 

func (o *Object) SetIDWithSignature(signer neofscrypto.Signer) error

SetIDWithSignature sets object identifier and signature.

func (*Object) SetOwnerID 

func (o *Object) SetOwnerID(v *user.ID)

SetOwnerID sets identifier of the object owner.

See also Object.OwnerID.

func (*Object) SetParent 

func (o *Object) SetParent(v *Object)

SetParent sets parent object w/o payload.

See also Object.Parent.

func (*Object) SetParentID 

func (o *Object) SetParentID(v oid.ID)

SetParentID sets identifier of the parent object.

See also Object.ParentID.

func (*Object) SetPayload 

func (o *Object) SetPayload(v []byte)

SetPayload sets payload bytes.

See also Object.Payload.

func (*Object) SetPayloadChecksum 

func (o *Object) SetPayloadChecksum(v checksum.Checksum)

SetPayloadChecksum sets checksum of the object payload.

See also Object.PayloadChecksum.

func (*Object) SetPayloadHomomorphicHash 

func (o *Object) SetPayloadHomomorphicHash(v checksum.Checksum)

SetPayloadHomomorphicHash sets homomorphic hash of the object payload.

See also Object.PayloadHomomorphicHash.

func (*Object) SetPayloadSize 

func (o *Object) SetPayloadSize(v uint64)

SetPayloadSize sets payload length of the object.

See also Object.PayloadSize.

func (*Object) SetPreviousID 

func (o *Object) SetPreviousID(v oid.ID)

SetPreviousID sets identifier of the previous sibling object.

See also Object.PreviousID.

func (*Object) SetSessionToken 

func (o *Object) SetSessionToken(v *session.Object)

SetSessionToken sets token of the session within which object was created.

See also Object.SessionToken.

func (*Object) SetSignature 

func (o *Object) SetSignature(v *neofscrypto.Signature)

SetSignature sets signature of the object identifier.

See also Object.Signature.

func (*Object) SetSplitID 

func (o *Object) SetSplitID(id *SplitID)

SetSplitID sets split identifier for the split object.

See also Object.SplitID.

func (*Object) SetType 

func (o *Object) SetType(v Type)

SetType sets type of the object.

See also Object.Type.

func (*Object) SetVerificationFields 

func (o *Object) SetVerificationFields(signer neofscrypto.Signer) error

SetVerificationFields calculates and sets all verification fields of the object.

func (*Object) SetVersion 

func (o *Object) SetVersion(v *version.Version)

SetVersion sets version of the object.

See also Object.Version.

func (*Object) Sign 

func (o *Object) Sign(signer neofscrypto.Signer) error

Sign signs object id with provided key and sets that signature to the object.

See also oid.ID.CalculateIDSignature.

func (*Object) Signature 

func (o *Object) Signature() *neofscrypto.Signature

Signature returns signature of the object identifier.

See also Object.SetSignature.

func (*Object) SignedData 

func (o *Object) SignedData() []byte

SignedData returns actual payload to sign.

See also Object.Sign.

func (*Object) SplitID 

func (o *Object) SplitID() *SplitID

SplitID return split identity of split object. If object is not split returns nil.

See also Object.SetSplitID.

func (*Object) ToV2 

func (o *Object) ToV2() *object.Object

ToV2 converts Object to v2 object.Object message.

The value returned shares memory with the structure itself, so changing it can lead to data corruption. Make a copy if you need to change it.

func (*Object) Type 

func (o *Object) Type() Type

Type returns type of the object.

See also Object.SetType.

func (*Object) Unmarshal 

func (o *Object) Unmarshal(data []byte) error

Unmarshal unmarshals protobuf binary representation of object.

See also Object.Marshal.

func (*Object) UnmarshalJSON 

func (o *Object) UnmarshalJSON(data []byte) error

UnmarshalJSON decodes object from protobuf JSON format.

See also Object.MarshalJSON.

func (*Object) UserAttributes 

func (o *Object) UserAttributes() []Attribute

UserAttributes returns user attributes of the Object.

The value returned shares memory with the structure itself, so changing it can lead to data corruption. Make a copy if you need to change it.

See also Object.SetAttributes, Object.Attributes.

func (*Object) VerifyID 

func (o *Object) VerifyID() error

VerifyID checks if identifier in the object corresponds to its structure.

func (*Object) VerifyPayloadChecksum 

func (o *Object) VerifyPayloadChecksum() error

VerifyPayloadChecksum checks if payload checksum in the object corresponds to its payload.

func (*Object) VerifySignature 

func (o *Object) VerifySignature() bool

VerifySignature verifies object ID signature.

func (*Object) Version 

func (o *Object) Version() *version.Version

Version returns version of the object.

See also Object.SetVersion. 

func (o *Object) WriteLink(l Link)

WriteLink writes a link to the Object, and sets its type to TypeLink.

See also ReadLink.

func (*Object) WriteLock 

func (o *Object) WriteLock(l Lock)

WriteLock writes Lock to the Object, and sets its type to TypeLock.

See also ReadLock.

type Range 

type Range object.Range

Range represents v2 object.Range object payload range.

func NewRange 

func NewRange() *Range

NewRange creates and initializes blank Range.

Defaults:

  • offset: 0;
  • length: 0.

func NewRangeFromV2 

func NewRangeFromV2(rV2 *object.Range) *Range

NewRangeFromV2 wraps v2 object.Range message to Range.

Nil object.Range converts to nil.

func (*Range) GetLength 

func (r *Range) GetLength() uint64

GetLength returns payload range size.

See also Range.SetLength.

func (*Range) GetOffset 

func (r *Range) GetOffset() uint64

GetOffset sets payload range offset from start.

See also Range.SetOffset.

func (*Range) SetLength 

func (r *Range) SetLength(v uint64)

SetLength sets payload range size.

See also Range.GetLength.

func (*Range) SetOffset 

func (r *Range) SetOffset(v uint64)

SetOffset gets payload range offset from start.

See also Range.GetOffset.

func (*Range) ToV2 

func (r *Range) ToV2() *object.Range

ToV2 converts Range to v2 object.Range message.

Nil Range converts to nil.

The value returned shares memory with the structure itself, so changing it can lead to data corruption. Make a copy if you need to change it.

type RequiredFields 

type RequiredFields struct {
	// Identifier of the NeoFS container associated with the object.
	Container cid.ID

	// Object owner's user ID in the NeoFS system.
	Owner user.ID
}

RequiredFields contains the minimum set of object data that must be set by the NeoFS user at the stage of creation.

type SearchFilter 

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

SearchFilter describes a single filter record.

func (*SearchFilter) Header 

func (f *SearchFilter) Header() string

Header returns filter header value.

func (SearchFilter) IsNonAttribute 

func (f SearchFilter) IsNonAttribute() bool

IsNonAttribute checks if SearchFilter is non-attribute: such filter is related to the particular property of the object instead of its attribute.

func (*SearchFilter) Operation 

func (f *SearchFilter) Operation() SearchMatchType

Operation returns filter operation value.

func (*SearchFilter) Value 

func (f *SearchFilter) Value() string

Value returns filter value.

type SearchFilters 

type SearchFilters []SearchFilter

SearchFilters is type to describe a group of filters.

func NewSearchFilters 

func NewSearchFilters() SearchFilters

NewSearchFilters constructs empty filter group.

func NewSearchFiltersFromV2 

func NewSearchFiltersFromV2(v2 []v2object.SearchFilter) SearchFilters

NewSearchFiltersFromV2 converts slice of v2object.SearchFilter to SearchFilters.

func (*SearchFilters) AddCreationEpochFilter 

func (f *SearchFilters) AddCreationEpochFilter(m SearchMatchType, epoch uint64)

AddCreationEpochFilter adds filter by creation epoch.

func (*SearchFilters) AddFilter 

func (f *SearchFilters) AddFilter(key, value string, op SearchMatchType)

AddFilter adds a filter to group by simple plain parameters.

If op is numeric (like MatchNumGT), value must be a base-10 integer.

func (*SearchFilters) AddFirstSplitObjectFilter 

func (f *SearchFilters) AddFirstSplitObjectFilter(m SearchMatchType, id oid.ID)

AddFirstSplitObjectFilter adds filter by first object ID.

The m must not be numeric (like MatchNumGT).

func (*SearchFilters) AddHomomorphicHashFilter 

func (f *SearchFilters) AddHomomorphicHashFilter(m SearchMatchType, sum [tz.Size]byte)

AddHomomorphicHashFilter adds filter by homomorphic hash.

The m must not be numeric (like MatchNumGT).

Example 
package main

import (
	"encoding/hex"
	"fmt"

	"github.com/epicchainlabs/epicchain-sdk-go/checksum"
	"github.com/nspcc-dev/tzhash/tz"
)

func main() {
	hash, _ := hex.DecodeString("7e302ebb3937e810feb501965580c746048db99cebd095c3ce27022407408bf904dde8d9aa8085d2cf7202345341cc947fa9d722c6b6699760d307f653815d0c")

	var v [tz.Size]byte
	copy(v[:], hash[:tz.Size])

	var cs checksum.Checksum
	cs.SetTillichZemor(v)

	fmt.Println(hex.EncodeToString(cs.Value()))
}

Output:

7e302ebb3937e810feb501965580c746048db99cebd095c3ce27022407408bf904dde8d9aa8085d2cf7202345341cc947fa9d722c6b6699760d307f653815d0c

func (*SearchFilters) AddObjectContainerIDFilter 

func (f *SearchFilters) AddObjectContainerIDFilter(m SearchMatchType, id cid.ID)

AddObjectContainerIDFilter adds a filter by container id.

The m must not be numeric (like MatchNumGT).

func (*SearchFilters) AddObjectIDFilter 

func (f *SearchFilters) AddObjectIDFilter(m SearchMatchType, id oid.ID)

AddObjectIDFilter adds filter by object identifier.

The m must not be numeric (like MatchNumGT).

func (*SearchFilters) AddObjectOwnerIDFilter 

func (f *SearchFilters) AddObjectOwnerIDFilter(m SearchMatchType, id user.ID)

AddObjectOwnerIDFilter adds a filter by object owner id.

The m must not be numeric (like MatchNumGT).

func (*SearchFilters) AddObjectVersionFilter 

func (f *SearchFilters) AddObjectVersionFilter(op SearchMatchType, v version.Version)

AddObjectVersionFilter adds a filter by version.

The op must not be numeric (like MatchNumGT).

func (*SearchFilters) AddParentIDFilter 

func (f *SearchFilters) AddParentIDFilter(m SearchMatchType, id oid.ID)

AddParentIDFilter adds filter by parent identifier.

The m must not be numeric (like MatchNumGT).

func (*SearchFilters) AddPayloadHashFilter 

func (f *SearchFilters) AddPayloadHashFilter(m SearchMatchType, sum [sha256.Size]byte)

AddPayloadHashFilter adds filter by payload hash.

The m must not be numeric (like MatchNumGT).

Example 
package main

import (
	"crypto/sha256"
	"encoding/hex"
	"fmt"

	"github.com/epicchainlabs/epicchain-sdk-go/checksum"
)

func main() {
	hash, _ := hex.DecodeString("66842cfea090b1d906b52400fae49d86df078c0670f2bdd059ba289ebe24a498")

	var v [sha256.Size]byte
	copy(v[:], hash[:sha256.Size])

	var cs checksum.Checksum
	cs.SetSHA256(v)

	fmt.Println(hex.EncodeToString(cs.Value()))
}

Output:

66842cfea090b1d906b52400fae49d86df078c0670f2bdd059ba289ebe24a498

func (*SearchFilters) AddPayloadSizeFilter 

func (f *SearchFilters) AddPayloadSizeFilter(m SearchMatchType, size uint64)

AddPayloadSizeFilter adds filter by payload size.

func (*SearchFilters) AddPhyFilter 

func (f *SearchFilters) AddPhyFilter()

AddPhyFilter adds filter by objects that are physically stored in the system.

func (*SearchFilters) AddRootFilter 

func (f *SearchFilters) AddRootFilter()

AddRootFilter adds filter by objects that have been created by a user explicitly.

func (*SearchFilters) AddSplitIDFilter 

func (f *SearchFilters) AddSplitIDFilter(m SearchMatchType, id SplitID)

AddSplitIDFilter adds filter by split ID.

The m must not be numeric (like MatchNumGT).

func (*SearchFilters) AddTypeFilter 

func (f *SearchFilters) AddTypeFilter(m SearchMatchType, typ Type)

AddTypeFilter adds filter by object type.

The m must not be numeric (like MatchNumGT).

func (*SearchFilters) MarshalJSON 

func (f *SearchFilters) MarshalJSON() ([]byte, error)

MarshalJSON encodes SearchFilters to protobuf JSON format.

See also SearchFilters.UnmarshalJSON.

func (SearchFilters) ToV2 

func (f SearchFilters) ToV2() []v2object.SearchFilter

ToV2 converts SearchFilters to v2object.SearchFilter slice.

func (*SearchFilters) UnmarshalJSON 

func (f *SearchFilters) UnmarshalJSON(data []byte) error

UnmarshalJSON decodes SearchFilters from protobuf JSON format.

See also SearchFilters.MarshalJSON.

type SearchMatchType 

type SearchMatchType uint32

SearchMatchType indicates match operation on specified header. 

const (
	MatchUnknown SearchMatchType = iota
	MatchStringEqual
	MatchStringNotEqual
	MatchNotPresent
	MatchCommonPrefix
	MatchNumGT
	MatchNumGE
	MatchNumLT
	MatchNumLE
)

func SearchMatchFromV2 

func SearchMatchFromV2(t v2object.MatchType) SearchMatchType

SearchMatchFromV2 converts v2 v2object.MatchType to SearchMatchType enum value.

func (*SearchMatchType) DecodeString 

func (m *SearchMatchType) DecodeString(s string) bool

DecodeString parses SearchMatchType from a string representation. It is a reverse action to EncodeToString().

Returns true if s was parsed successfully.

func (SearchMatchType) EncodeToString 

func (m SearchMatchType) EncodeToString() string

EncodeToString returns string representation of SearchMatchType.

String mapping:

func (SearchMatchType) String 

func (m SearchMatchType) String() string

String implements fmt.Stringer.

String is designed to be human-readable, and its format MAY differ between SDK versions. String MAY return same result as [EncodeToString]. String MUST NOT be used to encode ID into NeoFS protocol string.

func (SearchMatchType) ToV2 

func (m SearchMatchType) ToV2() v2object.MatchType

ToV2 converts SearchMatchType to v2 v2object.MatchType enum value.

type SplitID 

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

SplitID is a UUIDv4 used as attribute in split objects.

func NewSplitID 

func NewSplitID() *SplitID

NewSplitID returns UUID representation of splitID attribute.

Defaults:

  • id: random UUID.

func NewSplitIDFromV2 

func NewSplitIDFromV2(v []byte) *SplitID

NewSplitIDFromV2 returns parsed UUID from bytes. If v is invalid UUIDv4 byte sequence, then function returns nil.

Nil converts to nil.

func (*SplitID) Parse 

func (id *SplitID) Parse(s string) (err error)

Parse converts UUIDv4 string representation into SplitID.

func (*SplitID) SetUUID 

func (id *SplitID) SetUUID(v uuid.UUID)

SetUUID sets pre created UUID structure as SplitID.

func (*SplitID) String 

func (id *SplitID) String() string

String returns UUIDv4 string representation of SplitID.

func (*SplitID) ToV2 

func (id *SplitID) ToV2() []byte

ToV2 converts SplitID to a representation of SplitID in neofs-api v2.

Nil SplitID converts to nil.

type SplitInfo 

type SplitInfo object.SplitInfo

SplitInfo is an SDK representation of object.SplitInfo.

func NewSplitInfo 

func NewSplitInfo() *SplitInfo

NewSplitInfo creates and initializes blank SplitInfo.

Defaults:

  • splitID: nil;
  • lastPart nil;
  • link: nil.

func NewSplitInfoFromV2 

func NewSplitInfoFromV2(v2 *object.SplitInfo) *SplitInfo

NewSplitInfoFromV2 wraps v2 object.SplitInfo message to SplitInfo.

Nil object.SplitInfo converts to nil.

func (SplitInfo) FirstPart 

func (s SplitInfo) FirstPart() (v oid.ID, isSet bool)

FirstPart returns the first part of the split chain.

See also SplitInfo.SetFirstPart.

func (SplitInfo) LastPart 

func (s SplitInfo) LastPart() (v oid.ID, isSet bool)

LastPart returns last object ID, can be used to retrieve original object. The second return value is a flag, indicating if the last part is present.

See also SplitInfo.SetLastPart. 

func (s SplitInfo) Link() (v oid.ID, isSet bool)

Link returns a linker object ID. The second return value is a flag, indicating if the last part is present.

See also SplitInfo.SetLink.

func (*SplitInfo) Marshal 

func (s *SplitInfo) Marshal() ([]byte, error)

Marshal marshals SplitInfo into a protobuf binary form.

See also SplitInfo.Unmarshal.

func (*SplitInfo) MarshalJSON 

func (s *SplitInfo) MarshalJSON() ([]byte, error)

MarshalJSON implements json.Marshaler.

See also SplitInfo.UnmarshalJSON.

func (*SplitInfo) SetFirstPart 

func (s *SplitInfo) SetFirstPart(v oid.ID)

SetFirstPart sets the first part of the split chain.

See also SplitInfo.FirstPart.

func (*SplitInfo) SetLastPart 

func (s *SplitInfo) SetLastPart(v oid.ID)

SetLastPart sets the last object ID.

See also SplitInfo.LastPart. 

func (s *SplitInfo) SetLink(v oid.ID)

SetLink sets linker object ID.

See also SplitInfo.Link.

func (*SplitInfo) SetSplitID 

func (s *SplitInfo) SetSplitID(v *SplitID)

SetSplitID sets split ID in object ID. It resets split ID if nil passed.

See also SplitInfo.SplitID.

DEPRECATED.SplitInfo.SetFirstPart usage is required for the _new_ split objects, it serves as chain identification.

func (*SplitInfo) SplitID 

func (s *SplitInfo) SplitID() *SplitID

SplitID returns SplitID if it has been set. New objects may miss it, use SplitInfo.FirstPart as a split chain identifier.

The value returned shares memory with the structure itself, so changing it can lead to data corruption. Make a copy if you need to change it.

See also SplitInfo.SetSplitID.

func (*SplitInfo) ToV2 

func (s *SplitInfo) ToV2() *object.SplitInfo

ToV2 converts SplitInfo to v2 object.SplitInfo message.

Nil SplitInfo converts to nil.

The value returned shares memory with the structure itself, so changing it can lead to data corruption. Make a copy if you need to change it.

func (*SplitInfo) Unmarshal 

func (s *SplitInfo) Unmarshal(data []byte) error

Unmarshal unmarshals protobuf binary representation of SplitInfo.

See also SplitInfo.Marshal.

func (*SplitInfo) UnmarshalJSON 

func (s *SplitInfo) UnmarshalJSON(data []byte) error

UnmarshalJSON implements json.Unmarshaler.

See also SplitInfo.MarshalJSON.

type SplitInfoError 

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

SplitInfoError is a special error that means that the original object is a large one (split into a number of smaller objects).

func NewSplitInfoError 

func NewSplitInfoError(v *SplitInfo) *SplitInfoError

NewSplitInfoError is a constructor for SplitInfoError.

func (*SplitInfoError) Error 

func (s *SplitInfoError) Error() string

Error implements the error interface.

func (*SplitInfoError) SplitInfo 

func (s *SplitInfoError) SplitInfo() *SplitInfo

SplitInfo returns SplitInfo data.

type Tombstone 

type Tombstone tombstone.Tombstone

Tombstone represents v2-compatible tombstone structure.

func NewTombstone 

func NewTombstone() *Tombstone

NewTombstone creates and initializes blank Tombstone.

Defaults:

  • exp: 0;
  • splitID: nil;
  • members: nil.

func NewTombstoneFromV2 

func NewTombstoneFromV2(tV2 *tombstone.Tombstone) *Tombstone

NewTombstoneFromV2 wraps v2 tombstone.Tombstone message to Tombstone.

Nil tombstone.Tombstone converts to nil.

func (*Tombstone) ExpirationEpoch 

func (t *Tombstone) ExpirationEpoch() uint64

ExpirationEpoch returns the last NeoFS epoch number of the tombstone lifetime.

See also Tombstone.SetExpirationEpoch.

func (*Tombstone) Marshal 

func (t *Tombstone) Marshal() ([]byte, error)

Marshal marshals Tombstone into a protobuf binary form.

See also Tombstone.Unmarshal.

func (*Tombstone) MarshalJSON 

func (t *Tombstone) MarshalJSON() ([]byte, error)

MarshalJSON encodes Tombstone to protobuf JSON format.

See also Tombstone.UnmarshalJSON.

func (*Tombstone) Members 

func (t *Tombstone) Members() []oid.ID

Members returns list of objects to be deleted.

See also Tombstone.SetMembers.

func (*Tombstone) SetExpirationEpoch 

func (t *Tombstone) SetExpirationEpoch(v uint64)

SetExpirationEpoch sets the last NeoFS epoch number of the tombstone lifetime.

See also Tombstone.ExpirationEpoch.

func (*Tombstone) SetMembers 

func (t *Tombstone) SetMembers(v []oid.ID)

SetMembers sets list of objects to be deleted.

See also Tombstone.Members.

func (*Tombstone) SetSplitID 

func (t *Tombstone) SetSplitID(v *SplitID)

SetSplitID sets identifier of object split hierarchy.

See also Tombstone.SplitID.

func (*Tombstone) SplitID 

func (t *Tombstone) SplitID() *SplitID

SplitID returns identifier of object split hierarchy.

The value returned shares memory with the structure itself, so changing it can lead to data corruption. Make a copy if you need to change it.

See also Tombstone.SetSplitID.

func (*Tombstone) ToV2 

func (t *Tombstone) ToV2() *tombstone.Tombstone

ToV2 converts Tombstone to v2 tombstone.Tombstone message.

Nil Tombstone converts to nil.

The value returned shares memory with the structure itself, so changing it can lead to data corruption. Make a copy if you need to change it.

func (*Tombstone) Unmarshal 

func (t *Tombstone) Unmarshal(data []byte) error

Unmarshal unmarshals protobuf binary representation of Tombstone.

See also Tombstone.Marshal.

func (*Tombstone) UnmarshalJSON 

func (t *Tombstone) UnmarshalJSON(data []byte) error

UnmarshalJSON decodes Tombstone from protobuf JSON format.

See also Tombstone.MarshalJSON.

type Type 

type Type object.Type

Type is an enumerator for possible object types. 

const (
	TypeRegular Type = iota
	TypeTombstone
	TypeStorageGroup
	TypeLock
	TypeLink
)

func TypeFromV2 

func TypeFromV2(t object.Type) Type

TypeFromV2 converts v2 object.Type to Type.

func (*Type) DecodeString 

func (t *Type) DecodeString(s string) bool

DecodeString parses Type from a string representation. It is a reverse action to EncodeToString().

Returns true if s was parsed successfully.

func (Type) EncodeToString 

func (t Type) EncodeToString() string

EncodeToString returns string representation of Type.

String mapping:

func (Type) String 

func (t Type) String() string

String implements fmt.Stringer.

String is designed to be human-readable, and its format MAY differ between SDK versions. String MAY return same result as Type.EncodeToString. String MUST NOT be used to encode ID into NeoFS protocol string.

func (Type) ToV2 

func (t Type) ToV2() object.Type

ToV2 converts Type to v2 object.Type.

Source Files

View all Source files

Directories

Path Synopsis
id
Package oid provides primitives to work with object identification in NeoFS.
 Package oid provides primitives to work with object identification in NeoFS.
test
Package oidtest provides functions for convenient testing of oid package API.
 Package oidtest provides functions for convenient testing of oid package API.
Package relations provides feature to process inner object structure.
 Package relations provides feature to process inner object structure.
Package slicer provides raw data slicing into NeoFS objects.
 Package slicer provides raw data slicing into NeoFS objects.

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