erigon-pulse/cmd/rpcdaemon/commands/storage_range.go
Alex Sharov 0be3044b7e
rename (#1978)
* rename

* rename "make grpc"

* rename "abi bindings templates"

* rename "abi bindings templates"
2021-05-20 19:25:53 +01:00

43 lines
1.3 KiB
Go

package commands
import (
"fmt"
"github.com/holiman/uint256"
"github.com/ledgerwatch/erigon/common"
"github.com/ledgerwatch/erigon/core/state"
)
// StorageRangeResult is the result of a debug_storageRangeAt API call.
type StorageRangeResult struct {
Storage StorageMap `json:"storage"`
NextKey *common.Hash `json:"nextKey"` // nil if Storage includes the last key in the trie.
}
// StorageMap a map from storage locations to StorageEntry items
type StorageMap map[common.Hash]StorageEntry
// StorageEntry an entry in storage of the account
type StorageEntry struct {
Key *common.Hash `json:"key"`
Value common.Hash `json:"value"`
}
func StorageRangeAt(stateReader *state.PlainKVState, contractAddress common.Address, start []byte, maxResult int) (StorageRangeResult, error) {
result := StorageRangeResult{Storage: StorageMap{}}
resultCount := 0
if err := stateReader.ForEachStorage(contractAddress, common.BytesToHash(start), func(key, seckey common.Hash, value uint256.Int) bool {
if resultCount < maxResult {
result.Storage[seckey] = StorageEntry{Key: &key, Value: value.Bytes32()}
} else {
result.NextKey = &key
}
resultCount++
return resultCount <= maxResult
}, maxResult+1); err != nil {
return StorageRangeResult{}, fmt.Errorf("error walking over storage: %v", err)
}
return result, nil
}