diff options
Diffstat (limited to 'core/blockchain.go')
| -rw-r--r-- | core/blockchain.go | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/core/blockchain.go b/core/blockchain.go index e7b1c846f..8bf680c38 100644 --- a/core/blockchain.go +++ b/core/blockchain.go @@ -1740,6 +1740,33 @@ func (bc *BlockChain) GetPending() (*types.Block, *state.StateDB) { return block, s } +// GetGovStateByHash extracts the governance contract's state from state trie +// (the merkle proof of governance contract address and the whole storage) +// at the given block hash. +func (bc *BlockChain) GetGovStateByHash(hash common.Hash) (*types.GovState, error) { + header := bc.GetHeaderByHash(hash) + if header == nil { + return nil, fmt.Errorf("header not found") + } + statedb, err := bc.StateAt(header.Root) + if err != nil { + return nil, err + } + return state.GetGovState(statedb, header, vm.GovernanceContractAddress) +} + +func (bc *BlockChain) GetGovStateByNumber(number uint64) (*types.GovState, error) { + header := bc.GetHeaderByNumber(number) + if header == nil { + return nil, fmt.Errorf("header not found") + } + statedb, err := bc.StateAt(header.Root) + if err != nil { + return nil, err + } + return state.GetGovState(statedb, header, vm.GovernanceContractAddress) +} + // reorg takes two blocks, an old chain and a new chain and will reconstruct the // blocks and inserts them to be part of the new canonical chain and accumulates // potential missing transactions and post an event about them. |