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CreateAccount.go
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CreateAccount.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 system
import (
"encoding/binary"
"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"
)
// Create a new account
type CreateAccount struct {
// Number of lamports to transfer to the new account
Lamports *uint64
// Number of bytes of memory to allocate
Space *uint64
// Address of program that will own the new account
Owner *ag_solanago.PublicKey
// [0] = [WRITE, SIGNER] FundingAccount
// ··········· Funding account
//
// [1] = [WRITE, SIGNER] NewAccount
// ··········· New account
ag_solanago.AccountMetaSlice `bin:"-" borsh_skip:"true"`
}
// NewCreateAccountInstructionBuilder creates a new `CreateAccount` instruction builder.
func NewCreateAccountInstructionBuilder() *CreateAccount {
nd := &CreateAccount{
AccountMetaSlice: make(ag_solanago.AccountMetaSlice, 2),
}
return nd
}
// Number of lamports to transfer to the new account
func (inst *CreateAccount) SetLamports(lamports uint64) *CreateAccount {
inst.Lamports = &lamports
return inst
}
// Number of bytes of memory to allocate
func (inst *CreateAccount) SetSpace(space uint64) *CreateAccount {
inst.Space = &space
return inst
}
// Address of program that will own the new account
func (inst *CreateAccount) SetOwner(owner ag_solanago.PublicKey) *CreateAccount {
inst.Owner = &owner
return inst
}
// Funding account
func (inst *CreateAccount) SetFundingAccount(fundingAccount ag_solanago.PublicKey) *CreateAccount {
inst.AccountMetaSlice[0] = ag_solanago.Meta(fundingAccount).WRITE().SIGNER()
return inst
}
func (inst *CreateAccount) GetFundingAccount() *ag_solanago.AccountMeta {
return inst.AccountMetaSlice[0]
}
// New account
func (inst *CreateAccount) SetNewAccount(newAccount ag_solanago.PublicKey) *CreateAccount {
inst.AccountMetaSlice[1] = ag_solanago.Meta(newAccount).WRITE().SIGNER()
return inst
}
func (inst *CreateAccount) GetNewAccount() *ag_solanago.AccountMeta {
return inst.AccountMetaSlice[1]
}
func (inst CreateAccount) Build() *Instruction {
return &Instruction{BaseVariant: ag_binary.BaseVariant{
Impl: inst,
TypeID: ag_binary.TypeIDFromUint32(Instruction_CreateAccount, binary.LittleEndian),
}}
}
// 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 CreateAccount) ValidateAndBuild() (*Instruction, error) {
if err := inst.Validate(); err != nil {
return nil, err
}
return inst.Build(), nil
}
func (inst *CreateAccount) Validate() error {
// Check whether all (required) parameters are set:
{
if inst.Lamports == nil {
return errors.New("Lamports parameter is not set")
}
if inst.Space == nil {
return errors.New("Space parameter is not set")
}
if inst.Owner == nil {
return errors.New("Owner parameter is not set")
}
}
// Check whether all accounts are set:
for accIndex, acc := range inst.AccountMetaSlice {
if acc == nil {
return fmt.Errorf("ins.AccountMetaSlice[%v] is not set", accIndex)
}
}
return nil
}
func (inst *CreateAccount) EncodeToTree(parent ag_treeout.Branches) {
parent.Child(ag_format.Program(ProgramName, ProgramID)).
//
ParentFunc(func(programBranch ag_treeout.Branches) {
programBranch.Child(ag_format.Instruction("CreateAccount")).
//
ParentFunc(func(instructionBranch ag_treeout.Branches) {
// Parameters of the instruction:
instructionBranch.Child("Params").ParentFunc(func(paramsBranch ag_treeout.Branches) {
paramsBranch.Child(ag_format.Param("Lamports", *inst.Lamports))
paramsBranch.Child(ag_format.Param(" Space", *inst.Space))
paramsBranch.Child(ag_format.Param(" Owner", *inst.Owner))
})
// Accounts of the instruction:
instructionBranch.Child("Accounts").ParentFunc(func(accountsBranch ag_treeout.Branches) {
accountsBranch.Child(ag_format.Meta("Funding", inst.AccountMetaSlice[0]))
accountsBranch.Child(ag_format.Meta(" New", inst.AccountMetaSlice[1]))
})
})
})
}
func (inst CreateAccount) MarshalWithEncoder(encoder *ag_binary.Encoder) error {
// Serialize `Lamports` param:
{
err := encoder.Encode(*inst.Lamports)
if err != nil {
return err
}
}
// Serialize `Space` param:
{
err := encoder.Encode(*inst.Space)
if err != nil {
return err
}
}
// Serialize `Owner` param:
{
err := encoder.Encode(*inst.Owner)
if err != nil {
return err
}
}
return nil
}
func (inst *CreateAccount) UnmarshalWithDecoder(decoder *ag_binary.Decoder) error {
// Deserialize `Lamports` param:
{
err := decoder.Decode(&inst.Lamports)
if err != nil {
return err
}
}
// Deserialize `Space` param:
{
err := decoder.Decode(&inst.Space)
if err != nil {
return err
}
}
// Deserialize `Owner` param:
{
err := decoder.Decode(&inst.Owner)
if err != nil {
return err
}
}
return nil
}
// NewCreateAccountInstruction declares a new CreateAccount instruction with the provided parameters and accounts.
func NewCreateAccountInstruction(
// Parameters:
lamports uint64,
space uint64,
owner ag_solanago.PublicKey,
// Accounts:
fundingAccount ag_solanago.PublicKey,
newAccount ag_solanago.PublicKey) *CreateAccount {
return NewCreateAccountInstructionBuilder().
SetLamports(lamports).
SetSpace(space).
SetOwner(owner).
SetFundingAccount(fundingAccount).
SetNewAccount(newAccount)
}