forked from onflow/flow-go
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge branch 'master' into improve-bounds-checking-in-converter
- Loading branch information
Showing
18 changed files
with
486 additions
and
76 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,122 @@ | ||
| package blocks | ||
|
|
||
| import ( | ||
| "fmt" | ||
|
|
||
| gethCommon "github.com/onflow/go-ethereum/common" | ||
|
|
||
| "github.com/onflow/flow-go/fvm/evm/handler" | ||
| "github.com/onflow/flow-go/fvm/evm/types" | ||
| "github.com/onflow/flow-go/model/flow" | ||
| ) | ||
|
|
||
| const BlockStoreLatestBlockMetaKey = "LatestBlockMeta" | ||
|
|
||
| // Blocks facilitates access to the recent block hash values | ||
| // and also the latest executed block meta data | ||
| type Blocks struct { | ||
| chainID flow.ChainID | ||
| storage types.BackendStorage | ||
| rootAddress flow.Address | ||
| bhl *handler.BlockHashList | ||
| } | ||
|
|
||
| // NewBlocks constructs a new blocks type | ||
| func NewBlocks( | ||
| chainID flow.ChainID, | ||
| rootAddress flow.Address, | ||
| storage types.BackendStorage, | ||
| ) (*Blocks, error) { | ||
| var err error | ||
| blocks := &Blocks{ | ||
| chainID: chainID, | ||
| storage: storage, | ||
| rootAddress: rootAddress, | ||
| } | ||
| blocks.bhl, err = handler.NewBlockHashList( | ||
| storage, | ||
| rootAddress, | ||
| handler.BlockHashListCapacity, | ||
| ) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| // if empty insert genesis block hash | ||
| if blocks.bhl.IsEmpty() { | ||
| genesis := types.GenesisBlock(chainID) | ||
| err = blocks.PushBlockMeta( | ||
| NewMeta( | ||
| genesis.Height, | ||
| genesis.Timestamp, | ||
| genesis.PrevRandao, | ||
| )) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| // push block hash | ||
| err = blocks.PushBlockHash( | ||
| genesis.Height, | ||
| types.GenesisBlockHash(chainID)) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| } | ||
| return blocks, nil | ||
| } | ||
|
|
||
| // PushBlock pushes a new block into the storage | ||
| func (b *Blocks) PushBlockMeta( | ||
| meta *Meta, | ||
| ) error { | ||
| // check height order | ||
| if meta.Height > 0 { | ||
| bm, err := b.LatestBlock() | ||
| if err != nil { | ||
| return err | ||
| } | ||
| if meta.Height != bm.Height+1 { | ||
| return fmt.Errorf("out of order block meta push! got: %d, expected %d ", meta.Height, bm.Height+1) | ||
| } | ||
| } | ||
| return b.storeBlockMetaData(meta) | ||
| } | ||
|
|
||
| // PushBlockHash pushes a new block block hash into the storage | ||
| func (b *Blocks) PushBlockHash( | ||
| height uint64, | ||
| hash gethCommon.Hash, | ||
| ) error { | ||
| return b.bhl.Push(height, hash) | ||
| } | ||
|
|
||
| func (b *Blocks) LatestBlock() (*Meta, error) { | ||
| return b.loadBlockMetaData() | ||
| } | ||
|
|
||
| // BlockHash returns the block hash for the given height | ||
| func (b *Blocks) BlockHash(height uint64) (gethCommon.Hash, error) { | ||
| _, hash, err := b.bhl.BlockHashByHeight(height) | ||
| return hash, err | ||
| } | ||
|
|
||
| // storeBlockMetaData stores the block meta data into storage | ||
| func (b *Blocks) storeBlockMetaData(bm *Meta) error { | ||
| // store the encoded data into backend | ||
| return b.storage.SetValue( | ||
| b.rootAddress[:], | ||
| []byte(BlockStoreLatestBlockMetaKey), | ||
| bm.Encode(), | ||
| ) | ||
| } | ||
|
|
||
| // loadBlockMetaData loads the block meta data from the storage | ||
| func (b *Blocks) loadBlockMetaData() (*Meta, error) { | ||
| data, err := b.storage.GetValue( | ||
| b.rootAddress[:], | ||
| []byte(BlockStoreLatestBlockMetaKey), | ||
| ) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return MetaFromEncoded(data) | ||
| } |
Oops, something went wrong.