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api.go
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api.go
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// Copyright 2022, Specular contributors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package proof
import (
"context"
"math/big"
"github.com/mantlenetworkio/mantle/l2geth/common"
"github.com/mantlenetworkio/mantle/l2geth/common/hexutil"
"github.com/mantlenetworkio/mantle/l2geth/consensus"
"github.com/mantlenetworkio/mantle/l2geth/core"
"github.com/mantlenetworkio/mantle/l2geth/core/state"
"github.com/mantlenetworkio/mantle/l2geth/core/types"
"github.com/mantlenetworkio/mantle/l2geth/core/vm"
"github.com/mantlenetworkio/mantle/l2geth/ethdb"
"github.com/mantlenetworkio/mantle/l2geth/log"
"github.com/mantlenetworkio/mantle/l2geth/params"
"github.com/mantlenetworkio/mantle/l2geth/rpc"
)
// Backend interface provides the common API services (that are provided by
// both full and light clients) with access to necessary functions.
type Backend interface {
HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error)
HeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Header, error)
BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error)
BlockByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Block, error)
GetTransaction(ctx context.Context, txHash common.Hash) (*types.Transaction, common.Hash, uint64, uint64, error)
GetReceipts(ctx context.Context, hash common.Hash) (types.Receipts, error)
RPCGasCap() *big.Int
ChainConfig() *params.ChainConfig
Engine() consensus.Engine
ChainDb() ethdb.Database
// StateAtBlock returns the state corresponding to the stateroot of the block.
// N.B: For executing transactions on block N, the required stateRoot is block N-1,
// so this method should be called with the parent.
StateAtBlock(ctx context.Context, block *types.Block, reexec uint64, base *state.StateDB, checkLive, preferDisk bool) (*state.StateDB, error)
StateAtTransaction(ctx context.Context, block *types.Block, txIndex int, reexec uint64) (core.Message, vm.Context, *state.StateDB, error)
}
// ProverAPI is the collection of Specular one-step proof APIs.
type ProverAPI struct {
backend Backend
}
// NewAPI creates a new API definition for the Specular one-step proof services.
func NewAPI(backend Backend) *ProverAPI {
return &ProverAPI{backend: backend}
}
type chainContext struct {
backend Backend
ctx context.Context
}
func (context *chainContext) ChainDb() ethdb.Database {
panic("not implemented")
}
func (context *chainContext) Engine() consensus.Engine {
return context.backend.Engine()
}
func (context *chainContext) GetHeader(hash common.Hash, number uint64) *types.Header {
header, err := context.backend.HeaderByNumber(context.ctx, rpc.BlockNumber(number))
if err != nil {
return nil
}
if header.Hash() == hash {
return header
}
header, err = context.backend.HeaderByHash(context.ctx, hash)
if err != nil {
return nil
}
return header
}
func createChainContext(backend Backend, ctx context.Context) core.ChainContext {
return &chainContext{backend: backend, ctx: ctx}
}
func (api *ProverAPI) ProveTransaction(ctx context.Context, hash common.Hash, target common.Hash, config *ProverConfig) (hexutil.Bytes, error) {
return hexutil.Bytes{}, nil
}
func (api *ProverAPI) ProveBlocksForBenchmark(ctx context.Context, startNum, endNum uint64, config *ProverConfig) ([]hexutil.Bytes, error) {
states, err := GenerateStates(api.backend, ctx, startNum, endNum, config)
if err != nil {
return nil, err
}
var proofs []hexutil.Bytes
for _, s := range states {
log.Info("Generate for ", "state", s)
proof, err := GenerateProof(ctx, api.backend, s, config)
if err != nil {
return nil, err
}
proofs = append(proofs, proof.Encode())
}
return proofs, nil
}
func (api *ProverAPI) GenerateStateHashes(ctx context.Context, startNum, endNum uint64, config *ProverConfig) ([]common.Hash, error) {
states, err := GenerateStates(api.backend, ctx, startNum, endNum, config)
if err != nil {
return nil, err
}
hashes := make([]common.Hash, len(states))
for i, state := range states {
hashes[i] = state.Hash()
}
return hashes, nil
}
// APIs return the collection of RPC services the tracer package offers.
func APIs(backend Backend) []rpc.API {
// Append all the local APIs and return
return []rpc.API{
{
Namespace: "debug",
Version: "1.0",
Service: NewAPI(backend),
Public: false,
},
}
}