djtx

package
v0.0.0-...-7be9c83 Latest Latest
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 Go to latest Published: Jan 30, 2022 License: BSD-3-Clause Imports: 24 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	IsInitializedKey byte = iota
)
View Source 
const MaxMemoSize = 256

MaxMemoSize is the maximum number of bytes in the memo field

Variables

This section is empty.

Functions

func IsSortedAndUniqueTransferableInputs 

func IsSortedAndUniqueTransferableInputs(ins []*TransferableInput) bool

func IsSortedAndUniqueTransferableInputsWithSigners 

func IsSortedAndUniqueTransferableInputsWithSigners(ins []*TransferableInput, signers [][]*crypto.PrivateKeySECP256K1R) bool

IsSortedAndUniqueTransferableInputsWithSigners returns true if the inputs are sorted and unique

func IsSortedAndUniqueUTXOIDs 

func IsSortedAndUniqueUTXOIDs(utxos []*UTXOID) bool

func IsSortedTransferableOutputs 

func IsSortedTransferableOutputs(outs []*TransferableOutput, c codec.Manager) bool

IsSortedTransferableOutputs returns true if output objects are sorted

func SortTransferableInputs 

func SortTransferableInputs(ins []*TransferableInput)

func SortTransferableInputsWithSigners 

func SortTransferableInputsWithSigners(ins []*TransferableInput, signers [][]*crypto.PrivateKeySECP256K1R)

SortTransferableInputsWithSigners sorts the inputs and signers based on the input's utxo ID

func SortTransferableOutputs 

func SortTransferableOutputs(outs []*TransferableOutput, c codec.Manager)

SortTransferableOutputs sorts output objects

func SortUTXOIDs 

func SortUTXOIDs(utxos []*UTXOID)

func VerifyTx 

func VerifyTx(
	feeAmount uint64,
	feeAssetID ids.ID,
	allIns [][]*TransferableInput,
	allOuts [][]*TransferableOutput,
	c codec.Manager,
) error

VerifyTx verifies that the inputs and outputs flowcheck, including a fee. Additionally, this verifies that the inputs and outputs are sorted.

Types

type AddressManager 

type AddressManager interface {
	// ParseLocalAddress takes in an address for this chain and produces the ID
	ParseLocalAddress(addrStr string) (ids.ShortID, error)

	// ParseAddress takes in an address and produces the ID of the chain it's
	// for and the ID of the address
	ParseAddress(addrStr string) (ids.ID, ids.ShortID, error)

	// FormatLocalAddress takes in a raw address and produces the formatted
	// address for this chain
	FormatLocalAddress(addr ids.ShortID) (string, error)

	// FormatAddress takes in a chainID and a raw address and produces the
	// formatted address for that chain
	FormatAddress(chainID ids.ID, addr ids.ShortID) (string, error)
}

func NewAddressManager 

func NewAddressManager(ctx *snow.Context) AddressManager

type Addressable 

type Addressable interface {
	Addresses() [][]byte
}

Addressable is the interface a feature extension must provide to be able to be tracked as a part of the utxo set for a set of addresses

type Amounter 

type Amounter interface {
	snow.ContextInitializable
	// Amount returns how much value this element represents of the asset in its
	// transaction.
	Amount() uint64
}

Amounter is a data structure that has an amount of something associated with it

type Asset 

type Asset struct {
	ID ids.ID `serialize:"true" json:"assetID"`
}

func (*Asset) AssetID 

func (asset *Asset) AssetID() ids.ID

AssetID returns the ID of the contained asset

func (*Asset) Verify 

func (asset *Asset) Verify() error

Verify implements the verify.Verifiable interface

type AtomicUTXOManager 

type AtomicUTXOManager interface {
	// GetAtomicUTXOs returns exported UTXOs such that at least one of the
	// addresses in [addrs] is referenced.
	//
	// Returns at most [limit] UTXOs. If [limit] <= 0 or
	// [limit] > [maxUTXOsToFetch], [limit] is set to [maxUTXOsToFetch].
	//
	// Returns:
	// * The fetched UTXOs
	// * The address associated with the last UTXO fetched
	// * The ID of the last UTXO fetched
	// * Any error that may have occurred upstream.
	GetAtomicUTXOs(
		chainID ids.ID,
		addrs ids.ShortSet,
		startAddr ids.ShortID,
		startUTXOID ids.ID,
		limit int,
	) ([]*UTXO, ids.ShortID, ids.ID, error)
}

func NewAtomicUTXOManager 

func NewAtomicUTXOManager(sm atomic.SharedMemory, codec codec.Manager) AtomicUTXOManager

type BaseTx 

type BaseTx struct {
	Metadata

	NetworkID    uint32                `serialize:"true" json:"networkID"`    // ID of the network this chain lives on
	BlockchainID ids.ID                `serialize:"true" json:"blockchainID"` // ID of the chain on which this transaction exists (prevents replay attacks)
	Outs         []*TransferableOutput `serialize:"true" json:"outputs"`      // The outputs of this transaction
	Ins          []*TransferableInput  `serialize:"true" json:"inputs"`       // The inputs to this transaction
	Memo         types.JSONByteSlice   `serialize:"true" json:"memo"`         // Memo field contains arbitrary bytes, up to maxMemoSize
}

BaseTx is the basis of all standard transactions.

func (*BaseTx) AssetIDs 

func (t *BaseTx) AssetIDs() ids.Set

AssetIDs returns the IDs of the assets this transaction depends on

func (*BaseTx) ConsumedAssetIDs 

func (t *BaseTx) ConsumedAssetIDs() ids.Set

ConsumedAssetIDs returns the IDs of the assets this transaction consumes

func (*BaseTx) InputUTXOs 

func (t *BaseTx) InputUTXOs() []*UTXOID

InputUTXOs track which UTXOs this transaction is consuming.

func (*BaseTx) MetadataVerify 

func (t *BaseTx) MetadataVerify(ctx *snow.Context) error

MetadataVerify ensures that transaction metadata is valid

func (*BaseTx) NumCredentials 

func (t *BaseTx) NumCredentials() int

NumCredentials returns the number of expected credentials

func (*BaseTx) UTXOs 

func (t *BaseTx) UTXOs() []*UTXO

UTXOs returns the UTXOs transaction is producing.

type Coster 

type Coster interface {
	// Cost returns how much this element costs to be included in its
	// transaction.
	Cost() (uint64, error)
}

Coster is a data structure that has a cost associated with it

type FlowChecker 

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

func NewFlowChecker 

func NewFlowChecker() *FlowChecker

func (*FlowChecker) Consume 

func (fc *FlowChecker) Consume(assetID ids.ID, amount uint64)

func (*FlowChecker) Produce 

func (fc *FlowChecker) Produce(assetID ids.ID, amount uint64)

func (*FlowChecker) Verify 

func (fc *FlowChecker) Verify() error

type Metadata 

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

func (*Metadata) Bytes 

func (md *Metadata) Bytes() []byte

Bytes returns the binary representation of this data

func (*Metadata) ID 

func (md *Metadata) ID() ids.ID

ID returns the unique ID of this data

func (*Metadata) Initialize 

func (md *Metadata) Initialize(unsignedBytes, bytes []byte)

Initialize set the bytes and ID

func (*Metadata) UnsignedBytes 

func (md *Metadata) UnsignedBytes() []byte

UnsignedBytes returns the unsigned binary representation of this data

func (*Metadata) Verify 

func (md *Metadata) Verify() error

Verify implements the verify.Verifiable interface

type SingletonState 

type SingletonState interface {
	IsInitialized() (bool, error)
	SetInitialized() error
}

SingletonState is a thin wrapper around a database to provide, caching, serialization, and de-serialization of singletons.

func NewSingletonState 

func NewSingletonState(db database.Database) SingletonState

type StatusState 

type StatusState interface {
	// Status returns a status from storage.
	GetStatus(id ids.ID) (choices.Status, error)

	// PutStatus saves a status in storage.
	PutStatus(id ids.ID, status choices.Status) error

	// DeleteStatus removes a status from storage.
	DeleteStatus(id ids.ID) error
}

StatusState is a thin wrapper around a database to provide, caching, serialization, and de-serialization for statuses.

func NewMeteredStatusState 

func NewMeteredStatusState(db database.Database, metrics prometheus.Registerer) (StatusState, error)

func NewStatusState 

func NewStatusState(db database.Database) StatusState

type TestAddressable 

type TestAddressable struct {
	TestTransferable `serialize:"true"`

	Addrs [][]byte `serialize:"true"`
}

func (*TestAddressable) Addresses 

func (a *TestAddressable) Addresses() [][]byte

type TestTransferable 

type TestTransferable struct {
	TestVerifiable

	Val uint64 `serialize:"true"`
}

func (*TestTransferable) Amount 

func (t *TestTransferable) Amount() uint64

func (*TestTransferable) Cost 

func (t *TestTransferable) Cost() (uint64, error)

func (*TestTransferable) InitCtx 

func (t *TestTransferable) InitCtx(*snow.Context)

type TestVerifiable 

type TestVerifiable struct{ Err error }

func (*TestVerifiable) InitCtx 

func (v *TestVerifiable) InitCtx(ctx *snow.Context)

func (*TestVerifiable) Verify 

func (v *TestVerifiable) Verify() error

func (*TestVerifiable) VerifyState 

func (v *TestVerifiable) VerifyState() error

type TransferableIn 

type TransferableIn interface {
	verify.Verifiable
	Amounter
	Coster
}

TransferableIn is the interface a feature extension must provide to transfer value between features extensions.

type TransferableInput 

type TransferableInput struct {
	UTXOID `serialize:"true"`
	Asset  `serialize:"true"`
	// FxID has serialize false because we don't want this to be encoded in bytes
	FxID ids.ID         `serialize:"false" json:"fxID"`
	In   TransferableIn `serialize:"true" json:"input"`
}

func (*TransferableInput) Input 

func (in *TransferableInput) Input() TransferableIn

Input returns the feature extension input that this Input is using.

func (*TransferableInput) Verify 

func (in *TransferableInput) Verify() error

Verify implements the verify.Verifiable interface

type TransferableOut 

type TransferableOut interface {
	snow.ContextInitializable
	verify.State
	Amounter
}

TransferableOut is the interface a feature extension must provide to transfer value between features extensions.

type TransferableOutput 

type TransferableOutput struct {
	Asset `serialize:"true"`
	// FxID has serialize false because we don't want this to be encoded in bytes
	FxID ids.ID          `serialize:"false" json:"fxID"`
	Out  TransferableOut `serialize:"true" json:"output"`
}

func (*TransferableOutput) InitCtx 

func (out *TransferableOutput) InitCtx(ctx *snow.Context)

func (*TransferableOutput) Output 

func (out *TransferableOutput) Output() TransferableOut

Output returns the feature extension output that this Output is using.

func (*TransferableOutput) Verify 

func (out *TransferableOutput) Verify() error

Verify implements the verify.Verifiable interface

type UTXO 

type UTXO struct {
	UTXOID `serialize:"true"`
	Asset  `serialize:"true"`

	Out verify.State `serialize:"true" json:"output"`
}

func (*UTXO) Verify 

func (utxo *UTXO) Verify() error

Verify implements the verify.Verifiable interface

type UTXOID 

type UTXOID struct {
	// Serialized:
	TxID        ids.ID `serialize:"true" json:"txID"`
	OutputIndex uint32 `serialize:"true" json:"outputIndex"`

	// Symbol is false if the UTXO should be part of the DB
	Symbol bool `json:"-"`
	// contains filtered or unexported fields
}

func (*UTXOID) InputID 

func (utxo *UTXOID) InputID() ids.ID

InputID returns a unique ID of the UTXO that this input is spending

func (*UTXOID) InputSource 

func (utxo *UTXOID) InputSource() (ids.ID, uint32)

InputSource returns the source of the UTXO that this input is spending

func (*UTXOID) String 

func (utxo *UTXOID) String() string

func (*UTXOID) Symbolic 

func (utxo *UTXOID) Symbolic() bool

Symbolic returns if this is the ID of a UTXO in the DB, or if it is a symbolic input

func (*UTXOID) Verify 

func (utxo *UTXOID) Verify() error

Verify implements the verify.Verifiable interface

type UTXOState 

type UTXOState interface {
	// GetUTXO attempts to load a utxo from storage.
	GetUTXO(utxoID ids.ID) (*UTXO, error)

	// PutUTXO saves the provided utxo to storage.
	PutUTXO(utxoID ids.ID, utxo *UTXO) error

	// DeleteUTXO deletes the provided utxo from storage.
	DeleteUTXO(utxoID ids.ID) error

	// UTXOIDs returns the slice of IDs associated with [addr], starting after
	// [previous].
	// If [previous] is not in the list, starts at beginning.
	// Returns at most [limit] IDs.
	UTXOIDs(addr []byte, previous ids.ID, limit int) ([]ids.ID, error)
}

UTXOState is a thin wrapper around a database to provide, caching, serialization, and de-serialization for UTXOs.

func NewMeteredUTXOState 

func NewMeteredUTXOState(db database.Database, codec codec.Manager, metrics prometheus.Registerer) (UTXOState, error)

func NewUTXOState 

func NewUTXOState(db database.Database, codec codec.Manager) UTXOState

Source Files

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