lotus/chain/validation/applier.go

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package validation
import (
"context"
"github.com/filecoin-project/specs-actors/actors/abi"
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"github.com/filecoin-project/specs-actors/actors/crypto"
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"github.com/filecoin-project/specs-actors/actors/runtime/exitcode"
"github.com/ipfs/go-cid"
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"github.com/filecoin-project/go-sectorbuilder"
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vtypes "github.com/filecoin-project/chain-validation/chain/types"
vstate "github.com/filecoin-project/chain-validation/state"
"github.com/filecoin-project/lotus/chain/stmgr"
"github.com/filecoin-project/lotus/chain/store"
"github.com/filecoin-project/lotus/chain/types"
"github.com/filecoin-project/lotus/chain/vm"
)
// Applier applies messages to state trees and storage.
type Applier struct {
}
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var _ vstate.Applier = &Applier{}
func NewApplier() *Applier {
return &Applier{}
}
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func (a *Applier) ApplyMessage(eCtx *vtypes.ExecutionContext, state vstate.VMWrapper, message *vtypes.Message) (vtypes.MessageReceipt, error) {
ctx := context.TODO()
st := state.(*StateWrapper)
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base := st.Root()
randSrc := &vmRand{eCtx}
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lotusVM, err := vm.NewVM(base, abi.ChainEpoch(eCtx.Epoch), randSrc, eCtx.Miner, st.bs, vm.Syscalls(sectorbuilder.ProofVerifier))
if err != nil {
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return vtypes.MessageReceipt{}, err
}
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ret, err := lotusVM.ApplyMessage(ctx, toLotusMsg(message))
if err != nil {
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return vtypes.MessageReceipt{}, err
}
st.stateRoot, err = lotusVM.Flush(ctx)
if err != nil {
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return vtypes.MessageReceipt{}, err
}
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mr := vtypes.MessageReceipt{
ExitCode: exitcode.ExitCode(ret.ExitCode),
ReturnValue: ret.Return,
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GasUsed: ret.GasUsed,
}
return mr, nil
}
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func (a *Applier) ApplyTipSetMessages(state vstate.VMWrapper, blocks []vtypes.BlockMessagesInfo, epoch abi.ChainEpoch, rnd vstate.RandomnessSource) ([]vtypes.MessageReceipt, error) {
sw := state.(*StateWrapper)
cs := store.NewChainStore(sw.bs, sw.ds, nil)
sm := stmgr.NewStateManager(cs)
var bms []stmgr.BlockMessages
for _, b := range blocks {
bm := stmgr.BlockMessages{
Miner: b.Miner,
}
for _, m := range b.BLSMessages {
bm.BlsMessages = append(bm.BlsMessages, toLotusMsg(m))
}
for _, m := range b.SECPMessages {
bm.SecpkMessages = append(bm.SecpkMessages, toLotusMsg(&m.Message))
}
bms = append(bms, bm)
}
var receipts []vtypes.MessageReceipt
sroot, _, err := sm.ApplyBlocks(context.TODO(), state.Root(), bms, epoch, &randWrapper{rnd}, func(c cid.Cid, msg *types.Message, ret *vm.ApplyRet) error {
receipts = append(receipts, vtypes.MessageReceipt{
ExitCode: exitcode.ExitCode(ret.ExitCode),
ReturnValue: ret.Return,
GasUsed: ret.GasUsed,
})
return nil
})
if err != nil {
return nil, err
}
state.(*StateWrapper).stateRoot = sroot
return receipts, nil
}
type randWrapper struct {
rnd vstate.RandomnessSource
}
func (w *randWrapper) GetRandomness(ctx context.Context, pers crypto.DomainSeparationTag, round int64, entropy []byte) ([]byte, error) {
return w.rnd.Randomness(ctx, pers, abi.ChainEpoch(round), entropy)
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}
type vmRand struct {
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eCtx *vtypes.ExecutionContext
}
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func (*vmRand) GetRandomness(ctx context.Context, dst crypto.DomainSeparationTag, h int64, input []byte) ([]byte, error) {
panic("implement me")
}
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func toLotusMsg(msg *vtypes.Message) *types.Message {
return &types.Message{
To: msg.To,
From: msg.From,
Nonce: uint64(msg.CallSeqNum),
Method: msg.Method,
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Value: types.BigInt{Int: msg.Value.Int},
GasPrice: types.BigInt{Int: msg.GasPrice.Int},
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GasLimit: types.NewInt(uint64(msg.GasLimit)),
Params: msg.Params,
}
}