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graphql, internal/ethapi: support overriding accounts in eth_call (#19917)

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* graphql, internal/ethapi: extend eth_call

This PR offers the third option parameter for eth_call API.
Caller can specify a batch of contracts for overriding the
original account metadata(nonce, balance, code, state).
It has a few advantages:

* It's friendly for debugging
* It's can make on-chain contract lighter for getting rid of
  state access functions

* core, internal: address comments
This commit is contained in:
gary rong
2019-08-08 21:44:11 +08:00
committed by Péter Szilágyi
parent 081642ed25
commit c9cdf144d5
4 changed files with 99 additions and 8 deletions
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4
graphql/graphql.go
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@ -817,7 +817,7 @@ func (b *Block) Call(ctx context.Context, args struct {
return nil, err
}
}
result, gas, failed, err := ethapi.DoCall(ctx, b.backend, args.Data, *b.num, vm.Config{}, 5*time.Second, b.backend.RPCGasCap())
result, gas, failed, err := ethapi.DoCall(ctx, b.backend, args.Data, *b.num, nil, vm.Config{}, 5*time.Second, b.backend.RPCGasCap())
status := hexutil.Uint64(1)
if failed {
status = 0
@ -885,7 +885,7 @@ func (p *Pending) Account(ctx context.Context, args struct {
func (p *Pending) Call(ctx context.Context, args struct {
Data ethapi.CallArgs
}) (*CallResult, error) {
result, gas, failed, err := ethapi.DoCall(ctx, p.backend, args.Data, rpc.PendingBlockNumber, vm.Config{}, 5*time.Second, p.backend.RPCGasCap())
result, gas, failed, err := ethapi.DoCall(ctx, p.backend, args.Data, rpc.PendingBlockNumber, nil, vm.Config{}, 5*time.Second, p.backend.RPCGasCap())
status := hexutil.Uint64(1)
if failed {
status = 0