104 lines
3.8 KiB
Go
104 lines
3.8 KiB
Go
/*
|
|
Package blockchain provides functions to access various blockchain data.
|
|
*/
|
|
package blockchain
|
|
|
|
import (
|
|
"github.com/nspcc-dev/neo-go/pkg/interop/contract"
|
|
)
|
|
|
|
// Transaction represents a NEO transaction. It's similar to Transaction class
|
|
// in Neo .net framework.
|
|
type Transaction struct {
|
|
// Hash represents the hash (256 bit BE value in a 32 byte slice) of the
|
|
// given transaction (which also is its ID).
|
|
Hash []byte
|
|
// Version represents the transaction version.
|
|
Version int
|
|
// Nonce is a random number to avoid hash collision.
|
|
Nonce int
|
|
// Sender represents the sender (160 bit BE value in a 20 byte slice) of the
|
|
// given Transaction.
|
|
Sender []byte
|
|
// SysFee represents fee to be burned.
|
|
SysFee int
|
|
// NetFee represents fee to be distributed to consensus nodes.
|
|
NetFee int
|
|
// ValidUntilBlock is the maximum blockchain height exceeding which
|
|
// transaction should fail verification.
|
|
ValidUntilBlock int
|
|
// Script represents code to run in NeoVM for this transaction.
|
|
Script []byte
|
|
}
|
|
|
|
// Block represents a NEO block, it's a data structure that you can get
|
|
// block-related data from. It's similar to the Block class in the Neo .net
|
|
// framework. To use it you need to get it via GetBlock function call.
|
|
type Block struct {
|
|
// Hash represents the hash (256 bit BE value in a 32 byte slice) of the
|
|
// given block.
|
|
Hash []byte
|
|
// Version of the block.
|
|
Version int
|
|
// PrevHash represents the hash (256 bit BE value in a 32 byte slice) of the
|
|
// previous block.
|
|
PrevHash []byte
|
|
// MerkleRoot represents the root hash (256 bit BE value in a 32 byte slice)
|
|
// of a transaction list.
|
|
MerkleRoot []byte
|
|
// Timestamp represents millisecond-precision block timestamp.
|
|
Timestamp int
|
|
// Index represents the height of the block.
|
|
Index int
|
|
// NextConsensus representes contract address of the next miner (160 bit BE
|
|
// value in a 20 byte slice).
|
|
NextConsensus []byte
|
|
// TransactionsLength represents the length of block's transactions array.
|
|
TransactionsLength int
|
|
}
|
|
|
|
// GetHeight returns current block height (index of the last accepted block).
|
|
// Note that when transaction is being run as a part of new block this block is
|
|
// considered as not yet accepted (persisted) and thus you'll get an index of
|
|
// the previous (already accepted) block. This function uses
|
|
// `System.Blockchain.GetHeight` syscall.
|
|
func GetHeight() int {
|
|
return 0
|
|
}
|
|
|
|
// GetBlock returns block found by the given hash or index (with the same
|
|
// encoding as for GetHeader). This function uses `System.Blockchain.GetBlock`
|
|
// syscall.
|
|
func GetBlock(heightOrHash interface{}) Block {
|
|
return Block{}
|
|
}
|
|
|
|
// GetTransaction returns transaction found by the given hash (256 bit in BE
|
|
// format represented as a slice of 32 bytes). This function uses
|
|
// `System.Blockchain.GetTransaction` syscall.
|
|
func GetTransaction(hash []byte) Transaction {
|
|
return Transaction{}
|
|
}
|
|
|
|
// GetTransactionFromBlock returns transaction hash (256 bit in BE format
|
|
// represented as a slice of 32 bytes) from the block found by the given hash or
|
|
// index (with the same encoding as for GetHeader) by its index. This
|
|
// function uses `System.Blockchain.GetTransactionFromBlock` syscall.
|
|
func GetTransactionFromBlock(heightOrHash interface{}, index int) []byte {
|
|
return nil
|
|
}
|
|
|
|
// GetTransactionHeight returns transaction's height (index of the block that
|
|
// includes it) by the given ID (256 bit in BE format represented as a slice of
|
|
// 32 bytes). This function uses `System.Blockchain.GetTransactionHeight` syscall.
|
|
func GetTransactionHeight(hash []byte) int {
|
|
return 0
|
|
}
|
|
|
|
// GetContract returns contract found by the given script hash (160 bit in BE
|
|
// format represented as a slice of 20 bytes). Refer to the `contract` package
|
|
// for details on how to use the returned structure. This function uses
|
|
// `System.Blockchain.GetContract` syscall.
|
|
func GetContract(scriptHash []byte) contract.Contract {
|
|
return contract.Contract{}
|
|
}
|