userop

Documentation

Overview

Package userop provides the base transaction object used throughout the stackup-bundler.

Index

• Variables
• type UserOperation
  • func New(data map[string]any) (*UserOperation, error)
  • func (op *UserOperation) GetDynamicGasPrice(basefee *big.Int) *big.Int
  • func (op *UserOperation) GetFactory() common.Address
  • func (op *UserOperation) GetMaxPrefund() *big.Int
  • func (op *UserOperation) GetPaymaster() common.Address
  • func (op *UserOperation) GetUserOpHash(entryPoint common.Address, chainID *big.Int) common.Hash
  • func (op *UserOperation) MarshalJSON() ([]byte, error)
  • func (op *UserOperation) Pack() []byte
  • func (op *UserOperation) PackForSignature() []byte
  • func (op *UserOperation) ToMap() (map[string]any, error)

Variables

var (

	// UserOpPrimitives is the primitive ABI types for each UserOperation field.
	UserOpPrimitives = []abi.ArgumentMarshaling{
		{Name: "sender", InternalType: "Sender", Type: "address"},
		{Name: "nonce", InternalType: "Nonce", Type: "uint256"},
		{Name: "initCode", InternalType: "InitCode", Type: "bytes"},
		{Name: "callData", InternalType: "CallData", Type: "bytes"},
		{Name: "callGasLimit", InternalType: "CallGasLimit", Type: "uint256"},
		{Name: "verificationGasLimit", InternalType: "VerificationGasLimit", Type: "uint256"},
		{Name: "preVerificationGas", InternalType: "PreVerificationGas", Type: "uint256"},
		{Name: "maxFeePerGas", InternalType: "MaxFeePerGas", Type: "uint256"},
		{Name: "maxPriorityFeePerGas", InternalType: "MaxPriorityFeePerGas", Type: "uint256"},
		{Name: "paymasterAndData", InternalType: "PaymasterAndData", Type: "bytes"},
		{Name: "signature", InternalType: "Signature", Type: "bytes"},
	}

	// UserOpType is the ABI type of a UserOperation.
	UserOpType, _ = abi.NewType("tuple", "op", UserOpPrimitives)

	// UserOpArr is the ABI type for an array of UserOperations.
	UserOpArr, _ = abi.NewType("tuple[]", "ops", UserOpPrimitives)
)

Types

type UserOperation

type UserOperation struct {
	Sender               common.Address `json:"sender"               mapstructure:"sender"               validate:"required"`
	Nonce                *big.Int       `json:"nonce"                mapstructure:"nonce"                validate:"required"`
	InitCode             []byte         `json:"initCode"             mapstructure:"initCode"             validate:"required"`
	CallData             []byte         `json:"callData"             mapstructure:"callData"             validate:"required"`
	CallGasLimit         *big.Int       `json:"callGasLimit"         mapstructure:"callGasLimit"         validate:"required"`
	VerificationGasLimit *big.Int       `json:"verificationGasLimit" mapstructure:"verificationGasLimit" validate:"required"`
	PreVerificationGas   *big.Int       `json:"preVerificationGas"   mapstructure:"preVerificationGas"   validate:"required"`
	MaxFeePerGas         *big.Int       `json:"maxFeePerGas"         mapstructure:"maxFeePerGas"         validate:"required"`
	MaxPriorityFeePerGas *big.Int       `json:"maxPriorityFeePerGas" mapstructure:"maxPriorityFeePerGas" validate:"required"`
	PaymasterAndData     []byte         `json:"paymasterAndData"     mapstructure:"paymasterAndData"     validate:"required"`
	Signature            []byte         `json:"signature"            mapstructure:"signature"            validate:"required"`
}

UserOperation represents an EIP-4337 style transaction for a smart contract account.

func New

func New(data map[string]any) (*UserOperation, error)

New decodes a map into a UserOperation object and validates all the fields are correctly typed.

func (*UserOperation) GetDynamicGasPrice

func (op *UserOperation) GetDynamicGasPrice(basefee *big.Int) *big.Int

GetDynamicGasPrice returns the effective gas price paid by the UserOperation given a basefee. If basefee is nil, it will assume a value of 0.

func (*UserOperation) GetFactory

func (op *UserOperation) GetFactory() common.Address

GetFactory returns the address portion of InitCode if applicable. Otherwise it returns the zero address.

func (*UserOperation) GetMaxPrefund

func (op *UserOperation) GetMaxPrefund() *big.Int

GetMaxPrefund returns the max amount of wei required to pay for gas fees by either the sender or paymaster.

func (*UserOperation) GetPaymaster

func (op *UserOperation) GetPaymaster() common.Address

GetPaymaster returns the address portion of PaymasterAndData if applicable. Otherwise it returns the zero address.

func (*UserOperation) GetUserOpHash

func (op *UserOperation) GetUserOpHash(entryPoint common.Address, chainID *big.Int) common.Hash

GetUserOpHash returns the hash of the userOp + entryPoint address + chainID.

func (*UserOperation) MarshalJSON

func (op *UserOperation) MarshalJSON() ([]byte, error)

MarshalJSON returns a JSON encoding of the UserOperation.

func (*UserOperation) Pack

func (op *UserOperation) Pack() []byte

Pack returns a standard message of the userOp. This cannot be used to generate a userOpHash.

func (*UserOperation) PackForSignature

func (op *UserOperation) PackForSignature() []byte

PackForSignature returns a minimal message of the userOp. This can be used to generate a userOpHash.

func (*UserOperation) ToMap

func (op *UserOperation) ToMap() (map[string]any, error)

ToMap returns the current UserOp struct as a map type.