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531 lines
20 KiB
531 lines
20 KiB
package hmyapi
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import (
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"context"
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"fmt"
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"math/big"
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"time"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/hexutil"
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"github.com/ethereum/go-ethereum/common/math"
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"github.com/ethereum/go-ethereum/rpc"
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"github.com/harmony-one/bls/ffi/go/bls"
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"github.com/harmony-one/harmony/common/denominations"
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"github.com/harmony-one/harmony/core"
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"github.com/harmony-one/harmony/core/types"
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"github.com/harmony-one/harmony/core/vm"
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internal_bls "github.com/harmony-one/harmony/crypto/bls"
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internal_common "github.com/harmony-one/harmony/internal/common"
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"github.com/harmony-one/harmony/internal/utils"
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"github.com/harmony-one/harmony/shard"
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)
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const (
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defaultGasPrice = denominations.Nano
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defaultFromAddress = "0x0000000000000000000000000000000000000000"
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defaultBlocksPeriod = 15000
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)
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// PublicBlockChainAPI provides an API to access the Harmony blockchain.
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// It offers only methods that operate on public data that is freely available to anyone.
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type PublicBlockChainAPI struct {
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b Backend
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}
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// NewPublicBlockChainAPI creates a new Harmony blockchain API.
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func NewPublicBlockChainAPI(b Backend) *PublicBlockChainAPI {
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return &PublicBlockChainAPI{b}
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}
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// BlockArgs is struct to include optional block formatting params.
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type BlockArgs struct {
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WithSigners bool `json:"withSigners"`
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InclTx bool `json:"inclTx"`
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FullTx bool `json:"fullTx"`
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Signers []string `json:"signers"`
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}
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// GetBlockByNumber returns the requested block. When blockNr is -1 the chain head is returned. When fullTx is true all
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// transactions in the block are returned in full detail, otherwise only the transaction hash is returned.
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func (s *PublicBlockChainAPI) GetBlockByNumber(ctx context.Context, blockNr rpc.BlockNumber, fullTx bool) (map[string]interface{}, error) {
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block, err := s.b.BlockByNumber(ctx, blockNr)
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if block != nil {
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blockArgs := BlockArgs{WithSigners: false, InclTx: true, FullTx: fullTx}
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response, err := RPCMarshalBlock(block, blockArgs)
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if err == nil && blockNr == rpc.PendingBlockNumber {
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// Pending blocks need to nil out a few fields
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for _, field := range []string{"hash", "nonce", "miner"} {
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response[field] = nil
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}
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}
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return response, err
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}
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return nil, err
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}
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// GetBlockByHash returns the requested block. When fullTx is true all transactions in the block are returned in full
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// detail, otherwise only the transaction hash is returned.
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func (s *PublicBlockChainAPI) GetBlockByHash(ctx context.Context, blockHash common.Hash, fullTx bool) (map[string]interface{}, error) {
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block, err := s.b.GetBlock(ctx, blockHash)
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if block != nil {
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blockArgs := BlockArgs{WithSigners: false, InclTx: true, FullTx: fullTx}
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return RPCMarshalBlock(block, blockArgs)
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}
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return nil, err
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}
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// GetBlockByNumberNew returns the requested block. When blockNr is -1 the chain head is returned. When fullTx in blockArgs is true all
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// transactions in the block are returned in full detail, otherwise only the transaction hash is returned. When withSigners in BlocksArgs is true
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// it shows block signers for this block in list of one addresses.
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func (s *PublicBlockChainAPI) GetBlockByNumberNew(ctx context.Context, blockNr rpc.BlockNumber, blockArgs BlockArgs) (map[string]interface{}, error) {
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block, err := s.b.BlockByNumber(ctx, blockNr)
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blockArgs.InclTx = true
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if blockArgs.WithSigners {
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blockArgs.Signers, err = s.GetBlockSigners(ctx, blockNr)
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if err != nil {
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return nil, err
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}
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}
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if block != nil {
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response, err := RPCMarshalBlock(block, blockArgs)
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if err == nil && blockNr == rpc.PendingBlockNumber {
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// Pending blocks need to nil out a few fields
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for _, field := range []string{"hash", "nonce", "miner"} {
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response[field] = nil
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}
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}
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return response, err
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}
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return nil, err
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}
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// GetBlockByHashNew returns the requested block. When fullTx in blockArgs is true all transactions in the block are returned in full
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// detail, otherwise only the transaction hash is returned. When withSigners in BlocksArgs is true
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// it shows block signers for this block in list of one addresses.
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func (s *PublicBlockChainAPI) GetBlockByHashNew(ctx context.Context, blockHash common.Hash, blockArgs BlockArgs) (map[string]interface{}, error) {
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block, err := s.b.GetBlock(ctx, blockHash)
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blockArgs.InclTx = true
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if blockArgs.WithSigners {
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blockArgs.Signers, err = s.GetBlockSigners(ctx, rpc.BlockNumber(block.NumberU64()))
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if err != nil {
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return nil, err
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}
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}
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if block != nil {
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return RPCMarshalBlock(block, blockArgs)
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}
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return nil, err
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}
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// GetBlocks method returns blocks in range blockStart, blockEnd just like GetBlockByNumber but all at once.
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func (s *PublicBlockChainAPI) GetBlocks(ctx context.Context, blockStart rpc.BlockNumber, blockEnd rpc.BlockNumber, blockArgs BlockArgs) ([]map[string]interface{}, error) {
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result := make([]map[string]interface{}, 0)
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for i := blockStart; i <= blockEnd; i++ {
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block, err := s.b.BlockByNumber(ctx, i)
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blockArgs.InclTx = true
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if blockArgs.WithSigners {
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blockArgs.Signers, err = s.GetBlockSigners(ctx, rpc.BlockNumber(i))
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if err != nil {
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return nil, err
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}
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}
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if block != nil {
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rpcBlock, err := RPCMarshalBlock(block, blockArgs)
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if err == nil && i == rpc.PendingBlockNumber {
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// Pending blocks need to nil out a few fields
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for _, field := range []string{"hash", "nonce", "miner"} {
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rpcBlock[field] = nil
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}
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}
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result = append(result, rpcBlock)
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}
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}
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return result, nil
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}
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// GetValidators returns validators list for a particular epoch.
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func (s *PublicBlockChainAPI) GetValidators(ctx context.Context, epoch int64) (map[string]interface{}, error) {
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committee, err := s.b.GetValidators(big.NewInt(epoch))
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if err != nil {
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return nil, err
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}
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validators := make([]map[string]interface{}, 0)
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for _, validator := range committee.NodeList {
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validatorBalance := new(hexutil.Big)
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validatorBalance, err = s.b.GetBalance(validator.EcdsaAddress)
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if err != nil {
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return nil, err
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}
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oneAddress, err := internal_common.AddressToBech32(validator.EcdsaAddress)
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if err != nil {
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return nil, err
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}
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validatorsFields := map[string]interface{}{
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"address": oneAddress,
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"balance": validatorBalance,
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}
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validators = append(validators, validatorsFields)
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}
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result := map[string]interface{}{
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"shardID": committee.ShardID,
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"validators": validators,
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}
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return result, nil
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}
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// GetBlockSigners returns signers for a particular block.
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func (s *PublicBlockChainAPI) GetBlockSigners(ctx context.Context, blockNr rpc.BlockNumber) ([]string, error) {
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if uint64(blockNr) == 0 || uint64(blockNr) >= uint64(s.BlockNumber()) {
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return make([]string, 0), nil
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}
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block, err := s.b.BlockByNumber(ctx, blockNr)
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if err != nil {
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return nil, err
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}
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blockWithSigners, err := s.b.BlockByNumber(ctx, blockNr+1)
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if err != nil {
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return nil, err
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}
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committee, err := s.b.GetValidators(block.Epoch())
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if err != nil {
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return nil, err
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}
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pubkeys := make([]*bls.PublicKey, len(committee.NodeList))
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for i, validator := range committee.NodeList {
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pubkeys[i] = new(bls.PublicKey)
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validator.BlsPublicKey.ToLibBLSPublicKey(pubkeys[i])
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}
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result := make([]string, 0)
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mask, err := internal_bls.NewMask(pubkeys, nil)
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if err != nil {
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return result, err
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}
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if err != nil {
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return result, err
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}
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err = mask.SetMask(blockWithSigners.Header().LastCommitBitmap())
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if err != nil {
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return result, err
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}
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for _, validator := range committee.NodeList {
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oneAddress, err := internal_common.AddressToBech32(validator.EcdsaAddress)
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if err != nil {
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return result, err
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}
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blsPublicKey := new(bls.PublicKey)
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validator.BlsPublicKey.ToLibBLSPublicKey(blsPublicKey)
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if ok, err := mask.KeyEnabled(blsPublicKey); err == nil && ok {
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result = append(result, oneAddress)
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}
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}
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return result, nil
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}
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// IsBlockSigner returns true if validator with address signed blockNr block.
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func (s *PublicBlockChainAPI) IsBlockSigner(ctx context.Context, blockNr rpc.BlockNumber, address string) (bool, error) {
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if uint64(blockNr) == 0 || uint64(blockNr) >= uint64(s.BlockNumber()) {
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return false, nil
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}
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block, err := s.b.BlockByNumber(ctx, blockNr)
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if err != nil {
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return false, err
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}
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blockWithSigners, err := s.b.BlockByNumber(ctx, blockNr+1)
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if err != nil {
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return false, err
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}
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committee, err := s.b.GetValidators(block.Epoch())
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if err != nil {
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return false, err
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}
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pubkeys := make([]*bls.PublicKey, len(committee.NodeList))
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for i, validator := range committee.NodeList {
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pubkeys[i] = new(bls.PublicKey)
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validator.BlsPublicKey.ToLibBLSPublicKey(pubkeys[i])
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}
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mask, err := internal_bls.NewMask(pubkeys, nil)
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if err != nil {
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return false, err
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}
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err = mask.SetMask(blockWithSigners.Header().LastCommitBitmap())
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if err != nil {
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return false, err
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}
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for _, validator := range committee.NodeList {
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oneAddress, err := internal_common.AddressToBech32(validator.EcdsaAddress)
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if err != nil {
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return false, err
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}
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if oneAddress != address {
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continue
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}
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blsPublicKey := new(bls.PublicKey)
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validator.BlsPublicKey.ToLibBLSPublicKey(blsPublicKey)
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if ok, err := mask.KeyEnabled(blsPublicKey); err == nil && ok {
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return true, nil
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}
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}
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return false, nil
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}
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// GetSignedBlocks returns how many blocks a particular validator signed for last defaultBlocksPeriod (3 hours ~ 1500 blocks).
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func (s *PublicBlockChainAPI) GetSignedBlocks(ctx context.Context, address string) hexutil.Uint64 {
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totalSigned := uint64(0)
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lastBlock := uint64(0)
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blockHeight := uint64(s.BlockNumber())
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if blockHeight >= defaultBlocksPeriod {
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lastBlock = blockHeight - defaultBlocksPeriod + 1
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}
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for i := lastBlock; i <= blockHeight; i++ {
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signed, err := s.IsBlockSigner(ctx, rpc.BlockNumber(i), address)
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if err == nil && signed {
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totalSigned++
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}
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}
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return hexutil.Uint64(totalSigned)
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}
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// GetEpoch returns current epoch.
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func (s *PublicBlockChainAPI) GetEpoch(ctx context.Context) hexutil.Uint64 {
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return hexutil.Uint64(s.LatestHeader(ctx).Epoch)
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}
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// GetLeader returns current shard leader.
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func (s *PublicBlockChainAPI) GetLeader(ctx context.Context) string {
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return s.LatestHeader(ctx).Leader
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}
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// GetValidatorInformation returns full validator info.
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func (s *PublicBlockChainAPI) GetValidatorInformation(ctx context.Context, address string) (map[string]interface{}, error) {
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validator := s.b.GetValidatorInformation(internal_common.ParseAddr(address))
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slotPubKeys := make([]string, 0)
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for _, slotPubKey := range validator.SlotPubKeys {
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slotPubKeys = append(slotPubKeys, slotPubKey.Hex())
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}
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fields := map[string]interface{}{
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"address": validator.Address.String(),
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"stake": hexutil.Uint64(validator.Stake.Uint64()),
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"name": validator.Description.Name,
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"slotPubKeys": slotPubKeys,
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"unbondingHeight": hexutil.Uint64(validator.UnbondingHeight.Uint64()),
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"minSelfDelegation": hexutil.Uint64(validator.MinSelfDelegation.Uint64()),
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"active": validator.Active,
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"identity": validator.Description.Identity,
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"commissionRate": hexutil.Uint64(validator.Commission.CommissionRates.Rate.Int.Uint64()),
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"commissionUpdateHeight": hexutil.Uint64(validator.Commission.UpdateHeight.Uint64()),
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"commissionMaxRate": hexutil.Uint64(validator.Commission.CommissionRates.MaxRate.Uint64()),
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"commissionMaxChangeRate": hexutil.Uint64(validator.Commission.CommissionRates.MaxChangeRate.Uint64()),
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"website": validator.Description.Website,
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"securityContact": validator.Description.SecurityContact,
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"details": validator.Description.Details,
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}
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return fields, nil
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}
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// GetStake returns validator stake.
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func (s *PublicBlockChainAPI) GetStake(ctx context.Context, address string) hexutil.Uint64 {
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validator := s.b.GetValidatorInformation(internal_common.ParseAddr(address))
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return hexutil.Uint64(validator.Stake.Uint64())
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}
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// GetValidatorStakingAddress stacking address returns validator stacking address.
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func (s *PublicBlockChainAPI) GetValidatorStakingAddress(ctx context.Context, address string) string {
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validator := s.b.GetValidatorInformation(internal_common.ParseAddr(address))
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return validator.Address.String()
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}
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// GetValidatorStakingWithDelegation returns total balace stacking for validator with delegation.
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func (s *PublicBlockChainAPI) GetValidatorStakingWithDelegation(ctx context.Context, address string) hexutil.Uint64 {
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return hexutil.Uint64(s.b.GetValidatorStakingWithDelegation(internal_common.ParseAddr(address)).Uint64())
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}
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// GetDelegatorsInformation returns list of delegators for a validator address.
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func (s *PublicBlockChainAPI) GetDelegatorsInformation(ctx context.Context, address string) ([]map[string]interface{}, error) {
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delegators := s.b.GetDelegatorsInformation(internal_common.ParseAddr(address))
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delegatorsFields := make([]map[string]interface{}, 0)
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for _, delegator := range delegators {
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fields := map[string]interface{}{
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"delegator": delegator.DelegatorAddress.String(),
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"amount": hexutil.Uint64(delegator.Amount.Uint64()),
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}
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delegatorsFields = append(delegatorsFields, fields)
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}
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return delegatorsFields, nil
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}
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// GetShardingStructure returns an array of sharding structures.
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func (s *PublicBlockChainAPI) GetShardingStructure(ctx context.Context) ([]map[string]interface{}, error) {
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// Get header and number of shards.
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epoch := s.GetEpoch(ctx)
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numShard := shard.Schedule.InstanceForEpoch(big.NewInt(int64(epoch))).NumShards()
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// Return shareding structure for each case.
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return shard.Schedule.GetShardingStructure(int(numShard), int(s.b.GetShardID())), nil
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}
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// GetShardID returns shard ID of the requested node.
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func (s *PublicBlockChainAPI) GetShardID(ctx context.Context) (int, error) {
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return int(s.b.GetShardID()), nil
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}
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// GetCode returns the code stored at the given address in the state for the given block number.
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func (s *PublicBlockChainAPI) GetCode(ctx context.Context, addr string, blockNr rpc.BlockNumber) (hexutil.Bytes, error) {
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address := internal_common.ParseAddr(addr)
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state, _, err := s.b.StateAndHeaderByNumber(ctx, blockNr)
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if state == nil || err != nil {
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return nil, err
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}
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code := state.GetCode(address)
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return code, state.Error()
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}
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// GetStorageAt returns the storage from the state at the given address, key and
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// block number. The rpc.LatestBlockNumber and rpc.PendingBlockNumber meta block
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// numbers are also allowed.
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func (s *PublicBlockChainAPI) GetStorageAt(ctx context.Context, addr string, key string, blockNr rpc.BlockNumber) (hexutil.Bytes, error) {
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address := internal_common.ParseAddr(addr)
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state, _, err := s.b.StateAndHeaderByNumber(ctx, blockNr)
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if state == nil || err != nil {
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return nil, err
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}
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res := state.GetState(address, common.HexToHash(key))
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return res[:], state.Error()
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}
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// GetBalance returns the amount of Nano for the given address in the state of the
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// given block number. The rpc.LatestBlockNumber and rpc.PendingBlockNumber meta
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// block numbers are also allowed.
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func (s *PublicBlockChainAPI) GetBalance(ctx context.Context, address string, blockNr rpc.BlockNumber) (*hexutil.Big, error) {
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// TODO: currently only get latest balance. Will add complete logic later.
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addr := internal_common.ParseAddr(address)
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return s.b.GetBalance(addr)
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}
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// BlockNumber returns the block number of the chain head.
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func (s *PublicBlockChainAPI) BlockNumber() hexutil.Uint64 {
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header, _ := s.b.HeaderByNumber(context.Background(), rpc.LatestBlockNumber) // latest header should always be available
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return hexutil.Uint64(header.Number().Uint64())
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}
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// ResendCx requests that the egress receipt for the given cross-shard
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// transaction be sent to the destination shard for credit. This is used for
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// unblocking a half-complete cross-shard transaction whose fund has been
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// withdrawn already from the source shard but not credited yet in the
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// destination account due to transient failures.
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func (s *PublicBlockChainAPI) ResendCx(ctx context.Context, txID common.Hash) (bool, error) {
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_, success := s.b.ResendCx(ctx, txID)
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return success, nil
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}
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// Call executes the given transaction on the state for the given block number.
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// It doesn't make and changes in the state/blockchain and is useful to execute and retrieve values.
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func (s *PublicBlockChainAPI) Call(ctx context.Context, args CallArgs, blockNr rpc.BlockNumber) (hexutil.Bytes, error) {
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result, _, _, err := doCall(ctx, s.b, args, blockNr, vm.Config{}, 5*time.Second, s.b.RPCGasCap())
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return (hexutil.Bytes)(result), err
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}
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func doCall(ctx context.Context, b Backend, args CallArgs, blockNr rpc.BlockNumber, vmCfg vm.Config, timeout time.Duration, globalGasCap *big.Int) ([]byte, uint64, bool, error) {
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defer func(start time.Time) {
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utils.Logger().Debug().
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Dur("runtime", time.Since(start)).
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Msg("Executing EVM call finished")
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}(time.Now())
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state, header, err := b.StateAndHeaderByNumber(ctx, blockNr)
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if state == nil || err != nil {
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return nil, 0, false, err
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}
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// Set sender address or use a default if none specified
|
|
var addr common.Address
|
|
if args.From == nil {
|
|
// TODO(ricl): this logic was borrowed from [go-ethereum](https://github.com/ethereum/go-ethereum/blob/f578d41ee6b3087f8021fd561a0b5665aea3dba6/internal/ethapi/api.go#L738)
|
|
// [question](https://ethereum.stackexchange.com/questions/72979/why-does-the-docall-function-use-the-first-account-by-default)
|
|
// Might need to reconsider the logic
|
|
// if wallets := b.AccountManager().Wallets(); len(wallets) > 0 {
|
|
// if accounts := wallets[0].Accounts(); len(accounts) > 0 {
|
|
// addr = accounts[0].Address
|
|
// }
|
|
// }
|
|
// The logic in ethereum is to pick a random address managed under the account manager.
|
|
// Currently Harmony no longers support the account manager.
|
|
// Any address does not affect the logic of this call.
|
|
addr = common.HexToAddress(defaultFromAddress)
|
|
} else {
|
|
addr = *args.From
|
|
}
|
|
// Set default gas & gas price if none were set
|
|
gas := uint64(math.MaxUint64 / 2)
|
|
if args.Gas != nil {
|
|
gas = uint64(*args.Gas)
|
|
}
|
|
if globalGasCap != nil && globalGasCap.Uint64() < gas {
|
|
utils.Logger().Warn().
|
|
Uint64("requested", gas).
|
|
Uint64("cap", globalGasCap.Uint64()).
|
|
Msg("Caller gas above allowance, capping")
|
|
gas = globalGasCap.Uint64()
|
|
}
|
|
gasPrice := new(big.Int).SetUint64(defaultGasPrice)
|
|
if args.GasPrice != nil {
|
|
gasPrice = args.GasPrice.ToInt()
|
|
}
|
|
|
|
value := new(big.Int)
|
|
if args.Value != nil {
|
|
value = args.Value.ToInt()
|
|
}
|
|
|
|
var data []byte
|
|
if args.Data != nil {
|
|
data = []byte(*args.Data)
|
|
}
|
|
|
|
// Create new call message
|
|
msg := types.NewMessage(addr, args.To, 0, value, gas, gasPrice, data, false)
|
|
|
|
// Setup context so it may be cancelled the call has completed
|
|
// or, in case of unmetered gas, setup a context with a timeout.
|
|
var cancel context.CancelFunc
|
|
if timeout > 0 {
|
|
ctx, cancel = context.WithTimeout(ctx, timeout)
|
|
} else {
|
|
ctx, cancel = context.WithCancel(ctx)
|
|
}
|
|
// Make sure the context is cancelled when the call has completed
|
|
// this makes sure resources are cleaned up.
|
|
defer cancel()
|
|
|
|
// Get a new instance of the EVM.
|
|
evm, vmError, err := b.GetEVM(ctx, msg, state, header)
|
|
if err != nil {
|
|
return nil, 0, false, err
|
|
}
|
|
// Wait for the context to be done and cancel the evm. Even if the
|
|
// EVM has finished, cancelling may be done (repeatedly)
|
|
go func() {
|
|
<-ctx.Done()
|
|
evm.Cancel()
|
|
}()
|
|
|
|
// Setup the gas pool (also for unmetered requests)
|
|
// and apply the message.
|
|
gp := new(core.GasPool).AddGas(math.MaxUint64)
|
|
res, gas, failed, err := core.ApplyMessage(evm, msg, gp)
|
|
if err := vmError(); err != nil {
|
|
return nil, 0, false, err
|
|
}
|
|
// If the timer caused an abort, return an appropriate error message
|
|
if evm.Cancelled() {
|
|
return nil, 0, false, fmt.Errorf("execution aborted (timeout = %v)", timeout)
|
|
}
|
|
return res, gas, failed, err
|
|
}
|
|
|
|
// LatestHeader returns the latest header information
|
|
func (s *PublicBlockChainAPI) LatestHeader(ctx context.Context) *HeaderInformation {
|
|
header, _ := s.b.HeaderByNumber(context.Background(), rpc.LatestBlockNumber) // latest header should always be available
|
|
return newHeaderInformation(header)
|
|
}
|
|
|