Method getModifiedAccounts

protocols/cpc/api.go:472–498

(startBlock, endBlock *types.Block)

}

func (api *PrivateDebugAPI) getModifiedAccounts(startBlock, endBlock *types.Block) ([]common.Address, error) {
	if startBlock.Number().Uint64() >= endBlock.Number().Uint64() {
		return nil, fmt.Errorf("start block height (%d) must be less than end block height (%d)", startBlock.Number().Uint64(), endBlock.Number().Uint64())
	}

	oldTrie, err := trie.NewSecure(startBlock.StateRoot(), trie.NewDatabase(api.cpc.chainDb), 0)
	if err != nil {
		return nil, err
	}
	newTrie, err := trie.NewSecure(endBlock.StateRoot(), trie.NewDatabase(api.cpc.chainDb), 0)
	if err != nil {
		return nil, err
	}

	diff, _ := trie.NewDifferenceIterator(oldTrie.NodeIterator([]byte{}), newTrie.NodeIterator([]byte{}))
	iter := trie.NewIterator(diff)

	var dirty []common.Address
	for iter.Next() {
		key := newTrie.GetKey(iter.Key)
		if key == nil {
			return nil, fmt.Errorf("no preimage found for hash %x", iter.Key)
		}
		dirty = append(dirty, common.BytesToAddress(key))
	}
	return dirty, nil
}