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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"
ag_binary "github.com/gagliardetto/binary"
ag_solanago "github.com/gagliardetto/solana-go"
ag_format "github.com/gagliardetto/solana-go/text/format"
ag_treeout "github.com/gagliardetto/treeout"
)
// 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 ag_solanago.AccountMetaSlice `bin:"-" borsh_skip:"true"`
Signers ag_solanago.AccountMetaSlice `bin:"-" borsh_skip:"true"`
}
func (obj *CloseAccount) SetAccounts(accounts []*ag_solanago.AccountMeta) error {
obj.Accounts, obj.Signers = ag_solanago.AccountMetaSlice(accounts).SplitFrom(3)
return nil
}
func (slice CloseAccount) GetAccounts() (accounts []*ag_solanago.AccountMeta) {
accounts = append(accounts, slice.Accounts...)
accounts = append(accounts, slice.Signers...)
return
}
// NewCloseAccountInstructionBuilder creates a new `CloseAccount` instruction builder.
func NewCloseAccountInstructionBuilder() *CloseAccount {
nd := &CloseAccount{
Accounts: make(ag_solanago.AccountMetaSlice, 3),
Signers: make(ag_solanago.AccountMetaSlice, 0),
}
return nd
}
// SetAccount sets the "account" account.
// The account to close.
func (inst *CloseAccount) SetAccount(account ag_solanago.PublicKey) *CloseAccount {
inst.Accounts[0] = ag_solanago.Meta(account).WRITE()
return inst
}
// GetAccount gets the "account" account.
// The account to close.
func (inst *CloseAccount) GetAccount() *ag_solanago.AccountMeta {
return inst.Accounts[0]
}
// SetDestinationAccount sets the "destination" account.
// The destination account.
func (inst *CloseAccount) SetDestinationAccount(destination ag_solanago.PublicKey) *CloseAccount {
inst.Accounts[1] = ag_solanago.Meta(destination).WRITE()
return inst
}
// GetDestinationAccount gets the "destination" account.
// The destination account.
func (inst *CloseAccount) GetDestinationAccount() *ag_solanago.AccountMeta {
return inst.Accounts[1]
}
// SetOwnerAccount sets the "owner" account.
// The account's owner.
func (inst *CloseAccount) SetOwnerAccount(owner ag_solanago.PublicKey, multisigSigners ...ag_solanago.PublicKey) *CloseAccount {
inst.Accounts[2] = ag_solanago.Meta(owner)
if len(multisigSigners) == 0 {
inst.Accounts[2].SIGNER()
}
for _, signer := range multisigSigners {
inst.Signers = append(inst.Signers, ag_solanago.Meta(signer).SIGNER())
}
return inst
}
// GetOwnerAccount gets the "owner" account.
// The account's owner.
func (inst *CloseAccount) GetOwnerAccount() *ag_solanago.AccountMeta {
return inst.Accounts[2]
}
func (inst CloseAccount) Build() *Instruction {
return &Instruction{BaseVariant: ag_binary.BaseVariant{
Impl: inst,
TypeID: ag_binary.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 (inst CloseAccount) ValidateAndBuild() (*Instruction, error) {
if err := inst.Validate(); err != nil {
return nil, err
}
return inst.Build(), nil
}
func (inst *CloseAccount) Validate() error {
// Check whether all (required) accounts are set:
{
if inst.Accounts[0] == nil {
return errors.New("accounts.Account is not set")
}
if inst.Accounts[1] == nil {
return errors.New("accounts.Destination is not set")
}
if inst.Accounts[2] == nil {
return errors.New("accounts.Owner is not set")
}
if !inst.Accounts[2].IsSigner && len(inst.Signers) == 0 {
return fmt.Errorf("accounts.Signers is not set")
}
if len(inst.Signers) > MAX_SIGNERS {
return fmt.Errorf("too many signers; got %v, but max is 11", len(inst.Signers))
}
}
return nil
}
func (inst *CloseAccount) EncodeToTree(parent ag_treeout.Branches) {
parent.Child(ag_format.Program(ProgramName, ProgramID)).
//
ParentFunc(func(programBranch ag_treeout.Branches) {
programBranch.Child(ag_format.Instruction("CloseAccount")).
//
ParentFunc(func(instructionBranch ag_treeout.Branches) {
// Parameters of the instruction:
instructionBranch.Child("Params").ParentFunc(func(paramsBranch ag_treeout.Branches) {})
// Accounts of the instruction:
instructionBranch.Child("Accounts").ParentFunc(func(accountsBranch ag_treeout.Branches) {
accountsBranch.Child(ag_format.Meta(" account", inst.Accounts[0]))
accountsBranch.Child(ag_format.Meta("destination", inst.Accounts[1]))
accountsBranch.Child(ag_format.Meta(" owner", inst.Accounts[2]))
signersBranch := accountsBranch.Child(fmt.Sprintf("signers[len=%v]", len(inst.Signers)))
for i, v := range inst.Signers {
if len(inst.Signers) > 9 && i < 10 {
signersBranch.Child(ag_format.Meta(fmt.Sprintf(" [%v]", i), v))
} else {
signersBranch.Child(ag_format.Meta(fmt.Sprintf("[%v]", i), v))
}
}
})
})
})
}
func (obj CloseAccount) MarshalWithEncoder(encoder *ag_binary.Encoder) (err error) {
return nil
}
func (obj *CloseAccount) UnmarshalWithDecoder(decoder *ag_binary.Decoder) (err error) {
return nil
}
// NewCloseAccountInstruction declares a new CloseAccount instruction with the provided parameters and accounts.
func NewCloseAccountInstruction(
// Accounts:
account ag_solanago.PublicKey,
destination ag_solanago.PublicKey,
owner ag_solanago.PublicKey,
multisigSigners []ag_solanago.PublicKey,
) *CloseAccount {
return NewCloseAccountInstructionBuilder().
SetAccount(account).
SetDestinationAccount(destination).
SetOwnerAccount(owner, multisigSigners...)
}