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668 lines
19 KiB
668 lines
19 KiB
package rpc
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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/rpc"
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"github.com/harmony-one/harmony/consensus/reward"
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"github.com/harmony-one/harmony/hmy"
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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/numeric"
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rpc_common "github.com/harmony-one/harmony/rpc/common"
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v1 "github.com/harmony-one/harmony/rpc/v1"
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v2 "github.com/harmony-one/harmony/rpc/v2"
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"github.com/harmony-one/harmony/shard"
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)
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const (
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initSupply = int64(12600000000)
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)
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var (
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blocksPeriod = shard.Schedule.BlocksPerEpoch()
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)
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// PublicBlockchainService 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 PublicBlockchainService struct {
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hmy *hmy.Harmony
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version Version
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}
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// NewPublicBlockchainAPI creates a new API for the RPC interface
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func NewPublicBlockchainAPI(hmy *hmy.Harmony, version Version) rpc.API {
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return rpc.API{
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Namespace: version.Namespace(),
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Version: APIVersion,
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Service: &PublicBlockchainService{hmy, version},
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Public: true,
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}
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}
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// getBlockOptions is a helper to get block args given an interface option from RPC params.
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func (s *PublicBlockchainService) getBlockOptions(opts interface{}) (*rpc_common.BlockArgs, error) {
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switch s.version {
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case V1:
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fullTx, ok := opts.(bool)
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if !ok {
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return nil, fmt.Errorf("invalid type for block arguments")
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}
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return &rpc_common.BlockArgs{
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WithSigners: false,
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FullTx: fullTx,
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InclStaking: true,
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}, nil
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case V2:
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parsedBlockArgs := rpc_common.BlockArgs{}
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if err := parsedBlockArgs.UnmarshalFromInterface(opts); err != nil {
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return nil, err
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}
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return &parsedBlockArgs, nil
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default:
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return nil, ErrUnknownRPCVersion
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}
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}
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// getBalanceByBlockNumber returns balance by block number at given eth blockNum without checks
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func (s *PublicBlockchainService) getBalanceByBlockNumber(
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ctx context.Context, address string, blockNum rpc.BlockNumber,
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) (*big.Int, error) {
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addr := internal_common.ParseAddr(address)
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balance, err := s.hmy.GetBalance(ctx, addr, blockNum)
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if err != nil {
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return nil, err
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}
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return balance, nil
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}
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// BlockNumber returns the block number of the chain head.
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func (s *PublicBlockchainService) BlockNumber(ctx context.Context) (interface{}, error) {
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// Fetch latest header
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header, err := s.hmy.HeaderByNumber(ctx, rpc.LatestBlockNumber)
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if err != nil {
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return nil, err
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}
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// Format return base on version
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switch s.version {
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case V1:
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return hexutil.Uint64(header.Number().Uint64()), nil
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case V2:
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return header.Number().Uint64(), nil
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default:
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return nil, ErrUnknownRPCVersion
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}
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}
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// GetBlockByNumber returns the requested block. When blockNum 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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// When withSigners in BlocksArgs is true it shows block signers for this block in list of one addresses.
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func (s *PublicBlockchainService) GetBlockByNumber(
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ctx context.Context, blockNumber BlockNumber, opts interface{},
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) (response StructuredResponse, err error) {
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// Process arguments based on version
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blockNum := blockNumber.EthBlockNumber()
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var blockArgs *rpc_common.BlockArgs
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blockArgs, ok := opts.(*rpc_common.BlockArgs)
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if !ok {
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blockArgs, err = s.getBlockOptions(opts)
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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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blockArgs.InclTx = true
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// Fetch the block
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if isBlockGreaterThanLatest(s.hmy, blockNum) {
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return nil, ErrRequestedBlockTooHigh
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}
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blk, err := s.hmy.BlockByNumber(ctx, blockNum)
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if err != nil {
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return nil, err
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}
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if blockArgs.WithSigners {
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blockArgs.Signers, err = s.GetBlockSigners(ctx, blockNumber)
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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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// Format the response according to version
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leader := s.hmy.GetLeaderAddress(blk.Header().Coinbase(), blk.Header().Epoch())
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var rpcBlock interface{}
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switch s.version {
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case V1:
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rpcBlock, err = v1.NewBlock(blk, blockArgs, leader)
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case V2:
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rpcBlock, err = v2.NewBlock(blk, blockArgs, leader)
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default:
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return nil, ErrUnknownRPCVersion
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}
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if err != nil {
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return nil, err
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}
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response, err = NewStructuredResponse(rpcBlock)
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if err != nil {
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return nil, err
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}
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// Pending blocks need to nil out a few fields
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if blockNum == rpc.PendingBlockNumber {
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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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// 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. 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 *PublicBlockchainService) GetBlockByHash(
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ctx context.Context, blockHash common.Hash, opts interface{},
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) (response StructuredResponse, err error) {
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// Process arguments based on version
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var blockArgs *rpc_common.BlockArgs
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blockArgs, ok := opts.(*rpc_common.BlockArgs)
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if !ok {
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blockArgs, err = s.getBlockOptions(opts)
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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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blockArgs.InclTx = true
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// Fetch the block
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blk, err := s.hmy.GetBlock(ctx, blockHash)
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if err != nil {
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return nil, err
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}
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if blockArgs.WithSigners {
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blockArgs.Signers, err = s.GetBlockSigners(ctx, BlockNumber(blk.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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// Format the response according to version
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leader := s.hmy.GetLeaderAddress(blk.Header().Coinbase(), blk.Header().Epoch())
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var rpcBlock interface{}
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switch s.version {
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case V1:
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rpcBlock, err = v1.NewBlock(blk, blockArgs, leader)
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case V2:
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rpcBlock, err = v2.NewBlock(blk, blockArgs, leader)
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default:
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return nil, ErrUnknownRPCVersion
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}
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if err != nil {
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return nil, err
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}
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return NewStructuredResponse(rpcBlock)
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}
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// GetBlockByNumberNew is an alias for GetBlockByNumber using rpc_common.BlockArgs
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func (s *PublicBlockchainService) GetBlockByNumberNew(
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ctx context.Context, blockNum BlockNumber, blockArgs *rpc_common.BlockArgs,
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) (StructuredResponse, error) {
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return s.GetBlockByNumber(ctx, blockNum, blockArgs)
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}
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// GetBlockByHashNew is an alias for GetBlocksByHash using rpc_common.BlockArgs
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func (s *PublicBlockchainService) GetBlockByHashNew(
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ctx context.Context, blockHash common.Hash, blockArgs *rpc_common.BlockArgs,
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) (StructuredResponse, error) {
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return s.GetBlockByHash(ctx, blockHash, blockArgs)
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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 *PublicBlockchainService) GetBlocks(
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ctx context.Context, blockNumberStart BlockNumber,
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blockNumberEnd BlockNumber, blockArgs *rpc_common.BlockArgs,
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) ([]StructuredResponse, error) {
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blockStart := blockNumberStart.Int64()
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blockEnd := blockNumberEnd.Int64()
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// Fetch blocks within given range
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result := []StructuredResponse{}
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for i := blockStart; i <= blockEnd; i++ {
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blockNum := BlockNumber(i)
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if blockNum.Int64() > s.hmy.CurrentBlock().Number().Int64() {
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break
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}
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// rpcBlock is already formatted according to version
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rpcBlock, err := s.GetBlockByNumber(ctx, blockNum, blockArgs)
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if err != nil {
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utils.Logger().Warn().Err(err).Msg("RPC Get Blocks Error")
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}
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if rpcBlock != nil {
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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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// IsLastBlock checks if block is last epoch block.
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func (s *PublicBlockchainService) IsLastBlock(ctx context.Context, blockNum uint64) (bool, error) {
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if !isBeaconShard(s.hmy) {
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return false, ErrNotBeaconShard
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}
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return shard.Schedule.IsLastBlock(blockNum), nil
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}
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// EpochLastBlock returns epoch last block.
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func (s *PublicBlockchainService) EpochLastBlock(ctx context.Context, epoch uint64) (uint64, error) {
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if !isBeaconShard(s.hmy) {
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return 0, ErrNotBeaconShard
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}
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return shard.Schedule.EpochLastBlock(epoch), nil
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}
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// GetBlockSigners returns signers for a particular block.
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func (s *PublicBlockchainService) GetBlockSigners(
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ctx context.Context, blockNumber BlockNumber,
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) ([]string, error) {
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// Process arguments based on version
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blockNum := blockNumber.EthBlockNumber()
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// Ensure correct block
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if blockNum.Int64() == 0 || blockNum.Int64() >= s.hmy.CurrentBlock().Number().Int64() {
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return []string{}, nil
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}
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if isBlockGreaterThanLatest(s.hmy, blockNum) {
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return nil, ErrRequestedBlockTooHigh
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}
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// Fetch signers
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slots, mask, err := s.hmy.GetBlockSigners(ctx, blockNum)
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if err != nil {
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return nil, err
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}
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// Response output is the same for all versions
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signers := []string{}
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for _, validator := range slots {
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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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if ok, err := mask.KeyEnabled(validator.BLSPublicKey); err == nil && ok {
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signers = append(signers, oneAddress)
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}
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}
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return signers, nil
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}
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// GetBlockSignerKeys returns bls public keys that signed the block.
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func (s *PublicBlockchainService) GetBlockSignerKeys(
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ctx context.Context, blockNumber BlockNumber,
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) ([]string, error) {
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// Process arguments based on version
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blockNum := blockNumber.EthBlockNumber()
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// Ensure correct block
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if blockNum.Int64() == 0 || blockNum.Int64() >= s.hmy.CurrentBlock().Number().Int64() {
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return []string{}, nil
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}
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if isBlockGreaterThanLatest(s.hmy, blockNum) {
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return nil, ErrRequestedBlockTooHigh
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}
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// Fetch signers
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slots, mask, err := s.hmy.GetBlockSigners(ctx, blockNum)
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if err != nil {
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return nil, err
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}
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// Response output is the same for all versions
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signers := []string{}
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for _, validator := range slots {
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if ok, err := mask.KeyEnabled(validator.BLSPublicKey); err == nil && ok {
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signers = append(signers, validator.BLSPublicKey.Hex())
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}
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}
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return signers, nil
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}
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// IsBlockSigner returns true if validator with address signed blockNum block.
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func (s *PublicBlockchainService) IsBlockSigner(
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ctx context.Context, blockNumber BlockNumber, address string,
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) (bool, error) {
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// Process arguments based on version
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blockNum := blockNumber.EthBlockNumber()
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// Ensure correct block
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if blockNum.Int64() == 0 {
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return false, nil
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}
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if isBlockGreaterThanLatest(s.hmy, blockNum) {
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return false, ErrRequestedBlockTooHigh
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}
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// Fetch signers
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slots, mask, err := s.hmy.GetBlockSigners(ctx, blockNum)
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if err != nil {
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return false, err
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}
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// Check if given address is in slots (response output is the same for all versions)
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for _, validator := range slots {
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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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if ok, err := mask.KeyEnabled(validator.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
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// last blocksPeriod (1 epoch's worth of blocks).
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func (s *PublicBlockchainService) GetSignedBlocks(
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ctx context.Context, address string,
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) (interface{}, error) {
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// Fetch the number of signed blocks within default period
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totalSigned := uint64(0)
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lastBlock := uint64(0)
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blockHeight := s.hmy.CurrentBlock().Number().Uint64()
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if blockHeight >= blocksPeriod {
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lastBlock = blockHeight - blocksPeriod + 1
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}
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for i := lastBlock; i <= blockHeight; i++ {
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signed, err := s.IsBlockSigner(ctx, 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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// Format the response according to the version
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switch s.version {
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case V1:
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return hexutil.Uint64(totalSigned), nil
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case V2:
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return totalSigned, nil
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default:
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return nil, ErrUnknownRPCVersion
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}
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}
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// GetEpoch returns current epoch.
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func (s *PublicBlockchainService) GetEpoch(ctx context.Context) (interface{}, error) {
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// Fetch Header
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header, err := s.hmy.HeaderByNumber(ctx, rpc.LatestBlockNumber)
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if err != nil {
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return "", err
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}
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epoch := header.Epoch().Uint64()
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// Format the response according to the version
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switch s.version {
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case V1:
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return hexutil.Uint64(epoch), nil
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case V2:
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return epoch, nil
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default:
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return nil, ErrUnknownRPCVersion
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}
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}
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// GetLeader returns current shard leader.
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func (s *PublicBlockchainService) GetLeader(ctx context.Context) (string, error) {
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// Fetch Header
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header, err := s.hmy.HeaderByNumber(ctx, rpc.LatestBlockNumber)
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if err != nil {
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return "", err
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}
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// Response output is the same for all versions
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leader := s.hmy.GetLeaderAddress(header.Coinbase(), header.Epoch())
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return leader, nil
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}
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// GetShardingStructure returns an array of sharding structures.
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func (s *PublicBlockchainService) GetShardingStructure(
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ctx context.Context,
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) ([]StructuredResponse, error) {
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// Get header and number of shards.
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epoch := s.hmy.CurrentBlock().Epoch()
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numShard := shard.Schedule.InstanceForEpoch(epoch).NumShards()
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// Return sharding structure for each case (response output is the same for all versions)
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return shard.Schedule.GetShardingStructure(int(numShard), int(s.hmy.ShardID)), nil
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}
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// GetShardID returns shard ID of the requested node.
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func (s *PublicBlockchainService) GetShardID(ctx context.Context) (int, error) {
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// Response output is the same for all versions
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return int(s.hmy.ShardID), nil
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}
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// GetBalanceByBlockNumber returns balance by block number
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func (s *PublicBlockchainService) GetBalanceByBlockNumber(
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ctx context.Context, address string, blockNumber BlockNumber,
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) (interface{}, error) {
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// Process number based on version
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blockNum := blockNumber.EthBlockNumber()
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// Fetch balance
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if isBlockGreaterThanLatest(s.hmy, blockNum) {
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return nil, ErrRequestedBlockTooHigh
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}
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balance, err := s.getBalanceByBlockNumber(ctx, address, blockNum)
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if err != nil {
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return nil, err
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}
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// Format return base on version
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switch s.version {
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case V1:
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return (*hexutil.Big)(balance), nil
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case V2:
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return balance, nil
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default:
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return nil, ErrUnknownRPCVersion
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}
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}
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// LatestHeader returns the latest header information
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func (s *PublicBlockchainService) LatestHeader(ctx context.Context) (StructuredResponse, error) {
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// Fetch Header
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header, err := s.hmy.HeaderByNumber(ctx, rpc.LatestBlockNumber)
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if err != nil {
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return nil, err
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}
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// Response output is the same for all versions
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leader := s.hmy.GetLeaderAddress(header.Coinbase(), header.Epoch())
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return NewStructuredResponse(NewHeaderInformation(header, leader))
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}
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// GetLatestChainHeaders ..
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func (s *PublicBlockchainService) GetLatestChainHeaders(
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ctx context.Context,
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) (StructuredResponse, error) {
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// Response output is the same for all versions
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return NewStructuredResponse(s.hmy.GetLatestChainHeaders())
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}
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// GetLastCrossLinks ..
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func (s *PublicBlockchainService) GetLastCrossLinks(
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ctx context.Context,
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) ([]StructuredResponse, error) {
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if !isBeaconShard(s.hmy) {
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return nil, ErrNotBeaconShard
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}
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// Fetch crosslinks
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crossLinks, err := s.hmy.GetLastCrossLinks()
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if err != nil {
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return nil, err
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}
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// Format response, all output is the same for all versions
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responseSlice := []StructuredResponse{}
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for _, el := range crossLinks {
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response, err := NewStructuredResponse(el)
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if err != nil {
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return nil, err
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}
|
|
responseSlice = append(responseSlice, response)
|
|
}
|
|
return responseSlice, nil
|
|
}
|
|
|
|
// GetHeaderByNumber returns block header at given number
|
|
func (s *PublicBlockchainService) GetHeaderByNumber(
|
|
ctx context.Context, blockNumber BlockNumber,
|
|
) (StructuredResponse, error) {
|
|
// Process number based on version
|
|
blockNum := blockNumber.EthBlockNumber()
|
|
|
|
// Ensure valid block number
|
|
if isBlockGreaterThanLatest(s.hmy, blockNum) {
|
|
return nil, ErrRequestedBlockTooHigh
|
|
}
|
|
|
|
// Fetch Header
|
|
header, err := s.hmy.HeaderByNumber(ctx, blockNum)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// Response output is the same for all versions
|
|
leader := s.hmy.GetLeaderAddress(header.Coinbase(), header.Epoch())
|
|
return NewStructuredResponse(NewHeaderInformation(header, leader))
|
|
}
|
|
|
|
// GetCurrentUtilityMetrics ..
|
|
func (s *PublicBlockchainService) GetCurrentUtilityMetrics(
|
|
ctx context.Context,
|
|
) (StructuredResponse, error) {
|
|
if !isBeaconShard(s.hmy) {
|
|
return nil, ErrNotBeaconShard
|
|
}
|
|
|
|
// Fetch metrics
|
|
metrics, err := s.hmy.GetCurrentUtilityMetrics()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// Response output is the same for all versions
|
|
return NewStructuredResponse(metrics)
|
|
}
|
|
|
|
// GetSuperCommittees ..
|
|
func (s *PublicBlockchainService) GetSuperCommittees(
|
|
ctx context.Context,
|
|
) (StructuredResponse, error) {
|
|
if !isBeaconShard(s.hmy) {
|
|
return nil, ErrNotBeaconShard
|
|
}
|
|
|
|
// Fetch super committees
|
|
cmt, err := s.hmy.GetSuperCommittees()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// Response output is the same for all versions
|
|
return NewStructuredResponse(cmt)
|
|
}
|
|
|
|
// GetCurrentBadBlocks ..
|
|
func (s *PublicBlockchainService) GetCurrentBadBlocks(
|
|
ctx context.Context,
|
|
) ([]StructuredResponse, error) {
|
|
// Fetch bad blocks and format
|
|
badBlocks := []StructuredResponse{}
|
|
for _, blk := range s.hmy.GetCurrentBadBlocks() {
|
|
// Response output is the same for all versions
|
|
fmtBadBlock, err := NewStructuredResponse(blk)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
badBlocks = append(badBlocks, fmtBadBlock)
|
|
}
|
|
|
|
return badBlocks, nil
|
|
}
|
|
|
|
// GetTotalSupply ..
|
|
func (s *PublicBlockchainService) GetTotalSupply(
|
|
ctx context.Context,
|
|
) (numeric.Dec, error) {
|
|
// Response output is the same for all versions
|
|
return numeric.NewDec(initSupply), nil
|
|
}
|
|
|
|
// GetCirculatingSupply ..
|
|
func (s *PublicBlockchainService) GetCirculatingSupply(
|
|
ctx context.Context,
|
|
) (numeric.Dec, error) {
|
|
timestamp := time.Now()
|
|
|
|
// Response output is the same for all versions
|
|
return numeric.NewDec(initSupply).Mul(reward.PercentageForTimeStamp(timestamp.Unix())), nil
|
|
}
|
|
|
|
// GetStakingNetworkInfo ..
|
|
func (s *PublicBlockchainService) GetStakingNetworkInfo(
|
|
ctx context.Context,
|
|
) (StructuredResponse, error) {
|
|
if !isBeaconShard(s.hmy) {
|
|
return nil, ErrNotBeaconShard
|
|
}
|
|
totalStaking := s.hmy.GetTotalStakingSnapshot()
|
|
header, err := s.hmy.HeaderByNumber(ctx, rpc.LatestBlockNumber)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
medianSnapshot, err := s.hmy.GetMedianRawStakeSnapshot()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
epochLastBlock, err := s.EpochLastBlock(ctx, header.Epoch().Uint64())
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
totalSupply, err := s.GetTotalSupply(ctx)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
circulatingSupply, err := s.GetCirculatingSupply(ctx)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// Response output is the same for all versions
|
|
return NewStructuredResponse(StakingNetworkInfo{
|
|
TotalSupply: totalSupply,
|
|
CirculatingSupply: circulatingSupply,
|
|
EpochLastBlock: epochLastBlock,
|
|
TotalStaking: totalStaking,
|
|
MedianRawStake: medianSnapshot.MedianStake,
|
|
})
|
|
}
|
|
|
|
func isBlockGreaterThanLatest(hmy *hmy.Harmony, blockNum rpc.BlockNumber) bool {
|
|
// rpc.BlockNumber is int64 (latest = -1. pending = -2) and currentBlockNum is uint64.
|
|
if blockNum == rpc.PendingBlockNumber {
|
|
return true
|
|
}
|
|
if blockNum == rpc.LatestBlockNumber {
|
|
return false
|
|
}
|
|
return uint64(blockNum) > hmy.CurrentBlock().NumberU64()
|
|
}
|
|
|