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eth, les: add error when accessing missing block state (#18346)

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This change makes getBalance, getCode, getStorageAt, getProof,
call, getTransactionCount return an error if the block number in
the request doesn't exist. getHeaderByNumber still returns null
for missing headers.
This commit is contained in:
Martin Holst Swende
2019-05-02 14:50:23 +02:00
committed by Felix Lange
parent 4c90efdf57
commit 5036992b06
3 changed files with 161 additions and 2 deletions
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6
les/api_backend.go
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@ -18,6 +18,7 @@ package les
import (
"context"
"errors"
"math/big"
"github.com/ethereum/go-ethereum/accounts"
@ -78,9 +79,12 @@ func (b *LesApiBackend) BlockByNumber(ctx context.Context, blockNr rpc.BlockNumb
func (b *LesApiBackend) StateAndHeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*state.StateDB, *types.Header, error) {
header, err := b.HeaderByNumber(ctx, blockNr)
if header == nil || err != nil {
if err != nil {
return nil, nil, err
}
if header == nil {
return nil, nil, errors.New("header not found")
}
return light.NewState(ctx, header, b.eth.odr), header, nil
}