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core/state: access trie through Database interface, track errors (#14589)

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With this commit, core/state's access to the underlying key/value database is
mediated through an interface. Database errors are tracked in StateDB and
returned by CommitTo or the new Error method.

Motivation for this change: We can remove the light client's duplicated copy of
core/state. The light client now supports node iteration, so tracing and storage
enumeration can work with the light client (not implemented in this commit).
This commit is contained in:
Felix Lange
2017-06-27 15:57:06 +02:00
committed by GitHub
parent bb366271fe
commit 9e5f03b6c4
49 changed files with 810 additions and 1664 deletions
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33
internal/ethapi/api.go
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@ -447,8 +447,8 @@ func (s *PublicBlockChainAPI) GetBalance(ctx context.Context, address common.Add
if state == nil || err != nil {
return nil, err
}
return state.GetBalance(ctx, address)
b := state.GetBalance(address)
return b, state.Error()
}
// GetBlockByNumber returns the requested block. When blockNr is -1 the chain head is returned. When fullTx is true all
@ -529,31 +529,25 @@ func (s *PublicBlockChainAPI) GetUncleCountByBlockHash(ctx context.Context, bloc
}
// GetCode returns the code stored at the given address in the state for the given block number.
func (s *PublicBlockChainAPI) GetCode(ctx context.Context, address common.Address, blockNr rpc.BlockNumber) (string, error) {
func (s *PublicBlockChainAPI) GetCode(ctx context.Context, address common.Address, blockNr rpc.BlockNumber) (hexutil.Bytes, error) {
state, _, err := s.b.StateAndHeaderByNumber(ctx, blockNr)
if state == nil || err != nil {
return "", err
return nil, err
}
res, err := state.GetCode(ctx, address)
if len(res) == 0 || err != nil { // backwards compatibility
return "0x", err
}
return common.ToHex(res), nil
code := state.GetCode(address)
return code, state.Error()
}
// GetStorageAt returns the storage from the state at the given address, key and
// block number. The rpc.LatestBlockNumber and rpc.PendingBlockNumber meta block
// numbers are also allowed.
func (s *PublicBlockChainAPI) GetStorageAt(ctx context.Context, address common.Address, key string, blockNr rpc.BlockNumber) (string, error) {
func (s *PublicBlockChainAPI) GetStorageAt(ctx context.Context, address common.Address, key string, blockNr rpc.BlockNumber) (hexutil.Bytes, error) {
state, _, err := s.b.StateAndHeaderByNumber(ctx, blockNr)
if state == nil || err != nil {
return "0x", err
return nil, err
}
res, err := state.GetState(ctx, address, common.HexToHash(key))
if err != nil {
return "0x", err
}
return res.Hex(), nil
res := state.GetState(address, common.HexToHash(key))
return res[:], state.Error()
}
// callmsg is the message type used for call transitions.
@ -978,11 +972,8 @@ func (s *PublicTransactionPoolAPI) GetTransactionCount(ctx context.Context, addr
if state == nil || err != nil {
return nil, err
}
nonce, err := state.GetNonce(ctx, address)
if err != nil {
return nil, err
}
return (*hexutil.Uint64)(&nonce), nil
nonce := state.GetNonce(address)
return (*hexutil.Uint64)(&nonce), state.Error()
}
// getTransactionBlockData fetches the meta data for the given transaction from the chain database. This is useful to