// Execute the block to mutate State.
// Also, execute txs on the proxyAppCtx and validate apphash
// Rolls back before executing transactions.
// Rolls back if invalid, but never commits.
func (s *State) ExecBlock(proxyAppCtx proxy.AppContext, block *types.Block, blockPartsHeader types.PartSetHeader) error {
// Validate the block.
err := s.validateBlock(block)
if err != nil {
return err
}
// Update the validator set
valSet := s.Validators.Copy()
// Update valSet with signatures from block.
updateValidatorsWithBlock(s.LastValidators, valSet, block)
// TODO: Update the validator set (e.g. block.Data.ValidatorUpdates?)
nextValSet := valSet.Copy()
// First, rollback.
proxyAppCtx.RollbackSync()
// Execute, or rollback. (Does not commit)
err = s.execBlockOnProxyApp(proxyAppCtx, block)
if err != nil {
proxyAppCtx.RollbackSync()
return err
}
// All good!
nextValSet.IncrementAccum(1)
s.Validators = nextValSet
s.LastValidators = valSet
s.LastAppHash = block.AppHash
s.LastBlockHeight = block.Height
s.LastBlockHash = block.Hash()
s.LastBlockParts = blockPartsHeader
s.LastBlockTime = block.Time
return nil
}
