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CloseAccount.go
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CloseAccount.go
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// Copyright 2021 github.com/gagliardetto
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package token
import (
"errors"
"fmt"
"github.com/cielu/go-solana/common"
"github.com/cielu/go-solana/core"
"github.com/cielu/go-solana/pkg/encodbin"
"github.com/cielu/go-solana/types/base"
)
// CloseAccount Close an account by transferring all its SOL to the destination account.
// Non-native accounts may only be closed if its token amount is zero.
type CloseAccount struct {
// [0] = [WRITE] account
// ··········· The account to close.
//
// [1] = [WRITE] destination
// ··········· The destination account.
//
// [2] = [] owner
// ··········· The account's owner.
//
// [3...] = [SIGNER] signers
// ··········· M signer accounts.
Accounts []*base.AccountMeta `bin:"-" borsh_skip:"true"`
Signers []*base.AccountMeta `bin:"-" borsh_skip:"true"`
}
func (cloAcc *CloseAccount) SetAccounts(accounts []*base.AccountMeta) error {
cloAcc.Accounts, cloAcc.Signers = core.SliceSplitFrom(accounts, 3)
return nil
}
func (cloAcc CloseAccount) GetAccounts() (accounts []*base.AccountMeta) {
accounts = append(accounts, cloAcc.Accounts...)
accounts = append(accounts, cloAcc.Signers...)
return
}
// NewCloseAccountInstructionBuilder creates a new `CloseAccount` instruction builder.
func NewCloseAccountInstructionBuilder() *CloseAccount {
nd := &CloseAccount{
Accounts: make([]*base.AccountMeta, 3),
Signers: make([]*base.AccountMeta, 0),
}
return nd
}
// SetAccount sets the "account" account.
// The account to close.
func (cloAcc *CloseAccount) SetAccount(account common.Address) *CloseAccount {
cloAcc.Accounts[0] = base.Meta(account).WRITE()
return cloAcc
}
// GetAccount gets the "account" account.
// The account to close.
func (cloAcc *CloseAccount) GetAccount() *base.AccountMeta {
return cloAcc.Accounts[0]
}
// SetDestinationAccount sets the "destination" account.
// The destination account.
func (cloAcc *CloseAccount) SetDestinationAccount(destination common.Address) *CloseAccount {
cloAcc.Accounts[1] = base.Meta(destination).WRITE()
return cloAcc
}
// GetDestinationAccount gets the "destination" account.
// The destination account.
func (cloAcc *CloseAccount) GetDestinationAccount() *base.AccountMeta {
return cloAcc.Accounts[1]
}
// SetOwnerAccount sets the "owner" account.
// The account's owner.
func (cloAcc *CloseAccount) SetOwnerAccount(owner common.Address, multisigSigners ...common.Address) *CloseAccount {
cloAcc.Accounts[2] = base.Meta(owner)
if len(multisigSigners) == 0 {
cloAcc.Accounts[2].SIGNER()
}
for _, signer := range multisigSigners {
cloAcc.Signers = append(cloAcc.Signers, base.Meta(signer).SIGNER())
}
return cloAcc
}
// GetOwnerAccount gets the "owner" account.
// The account's owner.
func (cloAcc *CloseAccount) GetOwnerAccount() *base.AccountMeta {
return cloAcc.Accounts[2]
}
func (cloAcc CloseAccount) Build() *Instruction {
return &Instruction{BaseVariant: encodbin.BaseVariant{
Impl: cloAcc,
TypeID: encodbin.TypeIDFromUint8(Instruction_CloseAccount),
}}
}
// ValidateAndBuild validates the instruction parameters and accounts;
// if there is a validation error, it returns the error.
// Otherwise, it builds and returns the instruction.
func (cloAcc CloseAccount) ValidateAndBuild() (*Instruction, error) {
if err := cloAcc.Validate(); err != nil {
return nil, err
}
return cloAcc.Build(), nil
}
func (cloAcc *CloseAccount) Validate() error {
// Check whether all (required) accounts are set:
{
if cloAcc.Accounts[0] == nil {
return errors.New("accounts.Account is not set")
}
if cloAcc.Accounts[1] == nil {
return errors.New("accounts.Destination is not set")
}
if cloAcc.Accounts[2] == nil {
return errors.New("accounts.Owner is not set")
}
if !cloAcc.Accounts[2].IsSigner && len(cloAcc.Signers) == 0 {
return fmt.Errorf("accounts.Signers is not set")
}
if len(cloAcc.Signers) > MAX_SIGNERS {
return fmt.Errorf("too many signers; got %v, but max is 11", len(cloAcc.Signers))
}
}
return nil
}
func (cloAcc CloseAccount) MarshalWithEncoder(encoder *encodbin.Encoder) (err error) {
return nil
}
// NewCloseAccountInstruction declares a new CloseAccount instruction with the provided parameters and accounts.
func NewCloseAccountInstruction(
// Accounts:
account common.Address,
destination common.Address,
owner common.Address,
multisigSigners []common.Address,
) *CloseAccount {
return NewCloseAccountInstructionBuilder().
SetAccount(account).
SetDestinationAccount(destination).
SetOwnerAccount(owner, multisigSigners...)
}