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ledger_key.go
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/
ledger_key.go
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package xdr
import (
"encoding/base64"
"fmt"
)
// LedgerKey implements the `Keyer` interface
func (key *LedgerKey) LedgerKey() LedgerKey {
return *key
}
// Equals returns true if `other` is equivalent to `key`
func (key *LedgerKey) Equals(other LedgerKey) bool {
if key.Type != other.Type {
return false
}
switch key.Type {
case LedgerEntryTypeAccount:
l := key.MustAccount()
r := other.MustAccount()
return l.AccountId.Equals(r.AccountId)
case LedgerEntryTypeData:
l := key.MustData()
r := other.MustData()
return l.AccountId.Equals(r.AccountId) && l.DataName == r.DataName
case LedgerEntryTypeOffer:
l := key.MustOffer()
r := other.MustOffer()
return l.SellerId.Equals(r.SellerId) && l.OfferId == r.OfferId
case LedgerEntryTypeTrustline:
l := key.MustTrustLine()
r := other.MustTrustLine()
return l.AccountId.Equals(r.AccountId) && l.Asset.Equals(r.Asset)
case LedgerEntryTypeLiquidityPool:
l := key.MustLiquidityPool()
r := other.MustLiquidityPool()
return l.LiquidityPoolId == r.LiquidityPoolId
case LedgerEntryTypeConfigSetting:
l := key.MustConfigSetting()
r := other.MustConfigSetting()
return l.ConfigSettingId == r.ConfigSettingId
case LedgerEntryTypeContractData:
l := key.MustContractData()
r := other.MustContractData()
return l.Contract.Equals(r.Contract) && l.Key.Equals(r.Key) && l.Durability == r.Durability
case LedgerEntryTypeContractCode:
l := key.MustContractCode()
r := other.MustContractCode()
return l.Hash == r.Hash
case LedgerEntryTypeClaimableBalance:
l := key.MustClaimableBalance()
r := other.MustClaimableBalance()
return l.BalanceId.MustV0() == r.BalanceId.MustV0()
case LedgerEntryTypeTtl:
l := key.MustTtl()
r := other.MustTtl()
return l.KeyHash == r.KeyHash
default:
panic(fmt.Errorf("unknown ledger key type: %v", key.Type))
}
}
// SetAccount mutates `key` such that it represents the identity of `account`
func (key *LedgerKey) SetAccount(account AccountId) error {
data := LedgerKeyAccount{account}
nkey, err := NewLedgerKey(LedgerEntryTypeAccount, data)
if err != nil {
return err
}
*key = nkey
return nil
}
// SetData mutates `key` such that it represents the identity of the
// data entry owned by `account` and for `name`.
func (key *LedgerKey) SetData(account AccountId, name string) error {
data := LedgerKeyData{account, String64(name)}
nkey, err := NewLedgerKey(LedgerEntryTypeData, data)
if err != nil {
return err
}
*key = nkey
return nil
}
// SetOffer mutates `key` such that it represents the identity of the
// data entry owned by `account` and for offer `id`.
func (key *LedgerKey) SetOffer(account AccountId, id uint64) error {
data := LedgerKeyOffer{account, Int64(id)}
nkey, err := NewLedgerKey(LedgerEntryTypeOffer, data)
if err != nil {
return err
}
*key = nkey
return nil
}
// SetTrustline mutates `key` such that it represents the identity of the
// trustline owned by `account` and for `asset`.
func (key *LedgerKey) SetTrustline(account AccountId, line TrustLineAsset) error {
data := LedgerKeyTrustLine{account, line}
nkey, err := NewLedgerKey(LedgerEntryTypeTrustline, data)
if err != nil {
return err
}
*key = nkey
return nil
}
// SetClaimableBalance mutates `key` such that it represents the identity of a
// claimable balance.
func (key *LedgerKey) SetClaimableBalance(balanceID ClaimableBalanceId) error {
data := LedgerKeyClaimableBalance{balanceID}
nkey, err := NewLedgerKey(LedgerEntryTypeClaimableBalance, data)
if err != nil {
return err
}
*key = nkey
return nil
}
// SetLiquidityPool mutates `key` such that it represents the identity of a
// liquidity pool.
func (key *LedgerKey) SetLiquidityPool(poolID PoolId) error {
data := LedgerKeyLiquidityPool{poolID}
nkey, err := NewLedgerKey(LedgerEntryTypeLiquidityPool, data)
if err != nil {
return err
}
*key = nkey
return nil
}
// SetContractData mutates `key` such that it represents the identity of a
// contract data entry.
func (key *LedgerKey) SetContractData(contract ScAddress,
keyVal ScVal,
keyDurability ContractDataDurability) error {
data := LedgerKeyContractData{
Contract: contract,
Key: keyVal,
Durability: keyDurability,
}
nkey, err := NewLedgerKey(LedgerEntryTypeContractData, data)
if err != nil {
return err
}
*key = nkey
return nil
}
// SetContractCode mutates `key` such that it represents the identity of a
// contract code entry.
func (key *LedgerKey) SetContractCode(contractID Hash) error {
data := LedgerKeyContractCode{
Hash: contractID,
}
nkey, err := NewLedgerKey(LedgerEntryTypeContractCode, data)
if err != nil {
return err
}
*key = nkey
return nil
}
// SetConfigSetting mutates `key` such that it represents the identity of a
// config setting entry.
func (key *LedgerKey) SetConfigSetting(configSettingID ConfigSettingId) error {
data := LedgerKeyConfigSetting{
ConfigSettingId: configSettingID,
}
nkey, err := NewLedgerKey(LedgerEntryTypeConfigSetting, data)
if err != nil {
return err
}
*key = nkey
return nil
}
// SetTtl mutates `key` such that it represents the identity of an
// expiration entry.
func (key *LedgerKey) SetTtl(keyHash Hash) error {
data := LedgerKeyTtl{
KeyHash: keyHash,
}
nkey, err := NewLedgerKey(LedgerEntryTypeTtl, data)
if err != nil {
return err
}
*key = nkey
return nil
}
// GetLedgerKeyFromData obtains a ledger key from LedgerEntryData
//
// deprecated: Use `LedgerEntryData.LedgerKey()`
func GetLedgerKeyFromData(data LedgerEntryData) (LedgerKey, error) {
return data.LedgerKey()
}
func (e *EncodingBuffer) ledgerKeyCompressEncodeTo(key LedgerKey) error {
if err := e.xdrEncoderBuf.WriteByte(byte(key.Type)); err != nil {
return err
}
switch key.Type {
case LedgerEntryTypeAccount:
return e.accountIdCompressEncodeTo(key.Account.AccountId)
case LedgerEntryTypeTrustline:
if err := e.accountIdCompressEncodeTo(key.TrustLine.AccountId); err != nil {
return err
}
return e.assetTrustlineCompressEncodeTo(key.TrustLine.Asset)
case LedgerEntryTypeOffer:
// We intentionally don't encode the SellerID since the OfferID is enough
// (it's unique to the network)
return key.Offer.OfferId.EncodeTo(e.encoder)
case LedgerEntryTypeData:
if err := e.accountIdCompressEncodeTo(key.Data.AccountId); err != nil {
return err
}
dataName := trimRightZeros([]byte(key.Data.DataName))
_, err := e.xdrEncoderBuf.Write(dataName)
return err
case LedgerEntryTypeClaimableBalance:
return e.claimableBalanceCompressEncodeTo(key.ClaimableBalance.BalanceId)
case LedgerEntryTypeLiquidityPool:
_, err := e.xdrEncoderBuf.Write(key.LiquidityPool.LiquidityPoolId[:])
return err
case LedgerEntryTypeContractData:
// contract
if contractBytes, err := key.ContractData.Contract.MarshalBinary(); err != nil {
return err
} else {
if _, err := e.xdrEncoderBuf.Write(contractBytes[:]); err != nil {
return err
}
}
// key
if err := key.ContractData.Key.EncodeTo(e.encoder); err != nil {
return err
}
// durability
return e.xdrEncoderBuf.WriteByte(byte(key.ContractData.Durability))
case LedgerEntryTypeContractCode:
_, err := e.xdrEncoderBuf.Write(key.ContractCode.Hash[:])
return err
case LedgerEntryTypeConfigSetting:
return key.ConfigSetting.ConfigSettingId.EncodeTo(e.encoder)
case LedgerEntryTypeTtl:
return key.Ttl.KeyHash.EncodeTo(e.encoder)
default:
panic("Unknown type")
}
}
// MarshalBinaryBase64 marshals XDR into a binary form and then encodes it
// using base64.
func (key LedgerKey) MarshalBinaryBase64() (string, error) {
b, err := key.MarshalBinary()
if err != nil {
return "", err
}
return base64.StdEncoding.EncodeToString(b), nil
}