token

package
v0.10.4 Latest Latest
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 Go to latest Published: Aug 26, 2021 License: ISC Imports: 16 Imported by: 0

README

Qitmeer Token

Prerequisites

For the convenience of our explanation, we take the private net as an example.

    ./qitmeer --privnet
    cd ./script

How to create a new token ?

    ./cli.sh createTokenRawTx new [CoinId] [CoinName] [TokenOwnersAddress] [UpLimit]
    ./cli.sh txSign fff2cefe258ca60ae5f5abec99b5d63e2a561c40d784ee50b04eddf8efc84b0d [RawTxHex]
  • RawTxHex is results of the previous step.
  • fff2... is private key from testwallet
  • Please be careful not to use txSign in a formal scenario because it is not safe. Be sure to use qitmeer-wallet in formal cases.
    ./cli.sh sendRawTx [SignedRawTxHex]
    ./cli.sh generate 1
  • Finally, you can query the token status of the Qitmeer node.
    ./cli.sh tokeninfo

How to renew a token ?

    ./cli.sh createTokenRawTx renew [CoinId] [CoinName] [TokenOwnersAddress] [UpLimit]
    
    See above...
    ...

How to validate a token ?

    ./cli.sh createTokenRawTx validate [CoinId] 
    
    See above...
    ...

How to invalidate a token ?

    ./cli.sh createTokenRawTx invalidate [CoinId]
    
    See above...
    ...

Documentation

Index

Constants

View Source 
const (
	// TokenMintScriptLen is the length of a TokenMint script
	// <OP_DATA_64> <signature> <OP_DATA_33> <public key>  <OP_DATA_2> <token_id> <OP_TOKEN_MINT>
	// 1 + 64 + 1 + 33 + 1 + 2 + 1 = 103
	TokenMintScriptLen = 103
	// TokenUnMintScriptLen is the length of a TokenUnMint script
	// <OP_DATA_64> <signature> <OP_DATA_33> <public key>  <OP_DATA_2> <token_id> <OP_TOKEN_UNMINT>
	// 1 + 64 + 1 + 33 + 1 + 2 + 1 = 103
	TokenUnMintScriptLen = 103

	// TokenIdSize is the length of a TokenId (two bytes uint16)
	TokenIdSize = 2
)
View Source 
const MaxTokenNameLength = 6

Variables

This section is empty.

Functions

func CheckMintUpdate 

func CheckMintUpdate(update *BalanceUpdate) error

func CheckTokenMint 

func CheckTokenMint(tx *types.Transaction) (signature []byte, pubKey []byte, tokenId []byte, err error)

CheckTokenMint verifies the input if is a valid TOKEN_MINT transaction. The function return the signature, public key, tokenId and an error. The function ONLY check if the format is correct. for the returned signature, public key and token id. The callee MUST to do additional check for the returned values.

func CheckTokenUnMint 

func CheckTokenUnMint(tx *types.Transaction) (signature []byte, pubKey []byte, tokenId []byte, err error)

CheckTokenUnMint verifies the input if is a valid TOKEN_UNMINT transaction. The function return the signature, public key, tokenId and an error. The function ONLY check if the format is correct. for the returned signature, public key and token id. The callee MUST to do additional check for the returned values.

func CheckUnMintUpdate 

func CheckUnMintUpdate(update *BalanceUpdate) error

func DBPutTokenState 

func DBPutTokenState(dbTx database.Tx, bid uint32, ts *TokenState) error

dbPutTokenState put a token balance record into the token state database. the key is the provided block hash

func DBRemoveTokenState 

func DBRemoveTokenState(dbTx database.Tx, id uint32) error

func IsTokenMint 

func IsTokenMint(tx *types.Transaction) bool

IsTokenMint returns true if the input transaction is a valid TOKEN_MINT NOTICE: the function DOES NOT check the signature and pubKey and tokenId.

func IsTokenUnMint 

func IsTokenUnMint(tx *types.Transaction) bool

IsTokenUnMint returns true if the input transaction is a valid TOKEN_UlMINT NOTICE: the function DOES NOT check the signature and pubKey and tokenId.

func UseLogger 

func UseLogger(logger l.Logger)

UseLogger uses a specified Logger to output package logging info.

Types

type BalanceUpdate 

type BalanceUpdate struct {
	*TokenUpdate
	MeerAmount  int64
	TokenAmount types.Amount
	// contains filtered or unexported fields
}

balanceUpdate specifies the type and update record of the values that change a token balance. for TOKON_MINT, the values should add on the meerlock and token balance for TOKEN_UNMINT, the values should subtract from the meerlock and token balance

func NewBalanceUpdate 

func NewBalanceUpdate(tx *types.Transaction) (*BalanceUpdate, error)

func (*BalanceUpdate) CacheHash 

func (bu *BalanceUpdate) CacheHash() *hash.Hash

func (*BalanceUpdate) CheckSanity 

func (bu *BalanceUpdate) CheckSanity() error

func (*BalanceUpdate) Deserialize 

func (bu *BalanceUpdate) Deserialize(data []byte) (int, error)

func (*BalanceUpdate) GetHash 

func (bu *BalanceUpdate) GetHash() *hash.Hash

func (*BalanceUpdate) Serialize 

func (bu *BalanceUpdate) Serialize() ([]byte, error)

type ITokenUpdate 

type ITokenUpdate interface {
	GetType() types.TxType
	GetHash() *hash.Hash
	Serialize() ([]byte, error)
	Deserialize(data []byte) (int, error)
	CheckSanity() error
}

func NewTokenUpdate 

func NewTokenUpdate(tu *TokenUpdate) ITokenUpdate

func NewUpdateFromTx 

func NewUpdateFromTx(tx *types.Transaction) (ITokenUpdate, error)

type TokenBalance 

type TokenBalance struct {
	Balance    int64
	LockedMeer int64
}

TokenBalance specifies the token balance and the locked meer amount

type TokenBalancesMap 

type TokenBalancesMap map[types.CoinID]TokenBalance

func (*TokenBalancesMap) Copy 

func (tb *TokenBalancesMap) Copy() *TokenBalancesMap

func (*TokenBalancesMap) String 

func (tb *TokenBalancesMap) String() string

func (*TokenBalancesMap) Update 

func (tbs *TokenBalancesMap) Update(update *BalanceUpdate) error

func (*TokenBalancesMap) Updates 

func (tbs *TokenBalancesMap) Updates(updates []BalanceUpdate) error

type TokenFeeConfig 

type TokenFeeConfig struct {
	Type  types.FeeType
	Value int64
}

func NewTokenFeeConfig 

func NewTokenFeeConfig(data int64) *TokenFeeConfig

func (*TokenFeeConfig) GetData 

func (tf *TokenFeeConfig) GetData() int64

type TokenState 

type TokenState struct {
	PrevStateID uint32
	Types       TokenTypesMap
	Balances    TokenBalancesMap
	Updates     []ITokenUpdate
}

tokenState specifies the token balance of the current block. the updates are written in the same order as the tx in the block, which is used to verify the correctness of the token balance

func BuildGenesisTokenState 

func BuildGenesisTokenState() *TokenState

TODO: You can customize the initial value

func DBFetchTokenState 

func DBFetchTokenState(dbTx database.Tx, bid uint32) (*TokenState, error)

dbFetchTokenState fetch the token balance record from the token state database. the key is the input block hash.

func (*TokenState) CheckFees 

func (ts *TokenState) CheckFees(fees types.AmountMap) error

func (*TokenState) Commit 

func (ts *TokenState) Commit() error

func (*TokenState) Deserialize 

func (ts *TokenState) Deserialize(data []byte) (int, error)

Deserialize function will deserializes token state from the byte slice

func (*TokenState) Serialize 

func (ts *TokenState) Serialize() ([]byte, error)

Serialize function will serialize the token state into byte slice

func (*TokenState) Update 

func (ts *TokenState) Update() error

type TokenType 

type TokenType struct {
	Id      types.CoinID
	Owners  []byte
	UpLimit uint64
	Enable  bool
	Name    string
	FeeCfg  TokenFeeConfig
}

func (*TokenType) Deserialize 

func (tt *TokenType) Deserialize(data []byte) (int, error)

func (*TokenType) GetAddress 

func (tt *TokenType) GetAddress() types.Address

func (*TokenType) Serialize 

func (tt *TokenType) Serialize() ([]byte, error)

type TokenTypesMap 

type TokenTypesMap map[types.CoinID]TokenType

func (*TokenTypesMap) Update 

func (ttm *TokenTypesMap) Update(update *TypeUpdate) error

type TokenUpdate 

type TokenUpdate struct {
	Typ types.TxType
}

func (*TokenUpdate) Deserialize 

func (tu *TokenUpdate) Deserialize(data []byte) (int, error)

func (*TokenUpdate) GetType 

func (tu *TokenUpdate) GetType() types.TxType

func (*TokenUpdate) Serialize 

func (tu *TokenUpdate) Serialize() ([]byte, error)

type TypeUpdate 

type TypeUpdate struct {
	*TokenUpdate
	Tt TokenType
	// contains filtered or unexported fields
}

func NewTypeUpdateFromTx 

func NewTypeUpdateFromTx(tx *types.Transaction) (*TypeUpdate, error)

func (*TypeUpdate) CacheHash 

func (tu *TypeUpdate) CacheHash() *hash.Hash

func (*TypeUpdate) CheckSanity 

func (tu *TypeUpdate) CheckSanity() error

func (*TypeUpdate) Deserialize 

func (tu *TypeUpdate) Deserialize(data []byte) (int, error)

func (*TypeUpdate) GetHash 

func (tu *TypeUpdate) GetHash() *hash.Hash

func (*TypeUpdate) Serialize 

func (tu *TypeUpdate) Serialize() ([]byte, error)

Source Files

View all Source files

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