avax

package
v0.0.0-...-bc03976 Latest Latest
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 Go to latest Published: Sep 8, 2024 License: BSD-3-Clause Imports: 27 Imported by: 0

Documentation

Index

Constants

View Source 
const MaxMemoSize = 256

MaxMemoSize is the maximum number of bytes in the memo field

Variables

View Source 
var (
	ErrNilTx          = errors.New("nil tx is not valid")
	ErrWrongNetworkID = errors.New("tx has wrong network ID")
	ErrWrongChainID   = errors.New("tx has wrong chain ID")
	ErrMemoTooLarge   = errors.New("memo exceeds maximum length")
)
View Source 
var (
	ErrNilTransferableOutput   = errors.New("nil transferable output is not valid")
	ErrNilTransferableFxOutput = errors.New("nil transferable feature extension output is not valid")
	ErrOutputsNotSorted        = errors.New("outputs not sorted")

	ErrNilTransferableInput   = errors.New("nil transferable input is not valid")
	ErrNilTransferableFxInput = errors.New("nil transferable feature extension input is not valid")
	ErrInputsNotSortedUnique  = errors.New("inputs not sorted and unique")
)
View Source 
var ErrInsufficientFunds = errors.New("insufficient funds")
View Source 
var (
	ErrMismatchedChainIDs = errors.New("mismatched chainIDs")
)

Functions

func Consume 

func Consume(utxoDB UTXODeleter, ins []*TransferableInput)

Removes the UTXOs consumed by [ins] from the UTXO set

func GetBalance 

func GetBalance(db UTXOReader, addrs set.Set[ids.ShortID]) (uint64, error)

GetBalance returns the current balance of [addrs]

func IsSortedTransferableOutputs 

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

IsSortedTransferableOutputs returns true if output objects are sorted

func ParseLocalAddresses 

func ParseLocalAddresses(a AddressManager, addrStrs []string) (set.Set[ids.ShortID], error)

func ParseServiceAddress 

func ParseServiceAddress(a AddressManager, addrStr string) (ids.ShortID, error)

ParseServiceAddress get address ID from address string, being it either localized (using address manager, doing also components validations), or not localized. If both attempts fail, reports error from localized address parsing

func ParseServiceAddresses 

func ParseServiceAddresses(a AddressManager, addrStrs []string) (set.Set[ids.ShortID], error)

ParseServiceAddresses get addresses IDs from addresses strings, being them either localized or not

func Produce 

func Produce(
	utxoDB UTXOAdder,
	txID ids.ID,
	outs []*TransferableOutput,
)

Adds the UTXOs created by [outs] to the UTXO set. [txID] is the ID of the tx that created [outs].

func SortTransferableInputsWithSigners 

func SortTransferableInputsWithSigners(ins []*TransferableInput, signers [][]*secp256k1.PrivateKey)

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 VerifyMemoFieldLength 

func VerifyMemoFieldLength(memo types.JSONByteSlice, isDurangoActive bool) error

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

type BaseTx 

type BaseTx struct {
	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) InputUTXOs 

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

InputUTXOs track which UTXOs this transaction is consuming.

func (*BaseTx) NumCredentials 

func (t *BaseTx) NumCredentials() int

NumCredentials returns the number of expected credentials

func (*BaseTx) Verify 

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

Verify ensures that transaction metadata is valid

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 TestAddressable 

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

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

func (*TestAddressable) Addresses 

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

type TestState 

type TestState struct {
	verify.IsState `json:"-"`

	Err error
}

func (*TestState) InitCtx 

func (*TestState) InitCtx(*snow.Context)

func (*TestState) Verify 

func (v *TestState) Verify() error

type TestTransferable 

type TestTransferable struct {
	TestState

	Val uint64 `serialize:"true"`
}

func (*TestTransferable) Amount 

func (t *TestTransferable) Amount() uint64

func (*TestTransferable) Cost 

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

func (*TestTransferable) InitCtx 

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

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) Compare 

func (in *TransferableInput) Compare(other *TransferableInput) int

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

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

type UTXO 

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

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

func GetAllUTXOs 

func GetAllUTXOs(db UTXOReader, addrs set.Set[ids.ShortID]) ([]*UTXO, error)

func GetAtomicUTXOs 

func GetAtomicUTXOs(
	sharedMemory atomic.SharedMemory,
	codec codec.Manager,
	chainID ids.ID,
	addrs set.Set[ids.ShortID],
	startAddr ids.ShortID,
	startUTXOID ids.ID,
	limit int,
) ([]*UTXO, ids.ShortID, ids.ID, error)

GetAtomicUTXOs returns exported UTXOs such that at least one of the addresses in [addrs] is referenced.

Returns at most [limit] UTXOs.

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.

func GetPaginatedUTXOs 

func GetPaginatedUTXOs(
	db UTXOReader,
	addrs set.Set[ids.ShortID],
	lastAddr ids.ShortID,
	lastUTXOID ids.ID,
	limit int,
) ([]*UTXO, ids.ShortID, ids.ID, error)

GetPaginatedUTXOs returns UTXOs such that at least one of the addresses in [addrs] is referenced.

Returns at most [limit] UTXOs.

Only returns UTXOs associated with addresses >= [startAddr].

For address [startAddr], only returns UTXOs whose IDs are greater than [startUTXOID].

Returns: * The fetched UTXOs * The address associated with the last UTXO fetched * The ID of the last UTXO fetched

func (*UTXO) Verify 

func (utxo *UTXO) Verify() error

type UTXOAdder 

type UTXOAdder interface {
	AddUTXO(utxo *UTXO)
}

type UTXODeleter 

type UTXODeleter interface {
	DeleteUTXO(utxoID ids.ID)
}

type UTXOGetter 

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

UTXOGetter is a thin wrapper around a database to provide fetching of a UTXO.

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 UTXOIDFromString 

func UTXOIDFromString(s string) (*UTXOID, error)

UTXOIDFromString attempts to parse a string into a UTXOID

func (*UTXOID) Compare 

func (utxo *UTXOID) Compare(other *UTXOID) int

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

type UTXOReader 

type UTXOReader interface {
	UTXOGetter

	// 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)
}

UTXOReader is a thin wrapper around a database to provide fetching of UTXOs.

type UTXOState 

type UTXOState interface {
	UTXOReader
	UTXOWriter

	// Checksum returns the current UTXOChecksum.
	Checksum() ids.ID
}

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,
	trackChecksum bool,
) (UTXOState, error)

func NewUTXOState 

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

type UTXOWriter 

type UTXOWriter interface {
	// PutUTXO saves the provided utxo to storage.
	PutUTXO(utxo *UTXO) error

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

UTXOWriter is a thin wrapper around a database to provide storage and deletion of UTXOs.

Source Files

View all Source files

Directories

Path Synopsis
Package avaxmock is a generated GoMock package.
 Package avaxmock is a generated GoMock package.

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