store

Documentation

Index

• type BlockStore
  • func NewBlockStore(db dbm.DB) *BlockStore
  • func (bs *BlockStore) Height() int64
  • func (bs *BlockStore) LoadBlock(height int64) *types.Block
  • func (bs *BlockStore) LoadBlockCommit(height int64) *types.Commit
  • func (bs *BlockStore) LoadBlockMeta(height int64) *types.BlockMeta
  • func (bs *BlockStore) LoadBlockPart(height int64, index int) *types.Part
  • func (bs *BlockStore) LoadSeenCommit(height int64) *types.Commit
  • func (bs *BlockStore) SaveBlock(block *types.Block, blockParts *types.PartSet, seenCommit *types.Commit)
• type BlockStoreStateJSON
  • func LoadBlockStoreStateJSON(db dbm.DB) BlockStoreStateJSON
  • func (bsj BlockStoreStateJSON) Save(db dbm.DB)

Types

type BlockStore

type BlockStore struct {
	// contains filtered or unexported fields
}

BlockStore is a simple low level store for blocks.

There are three types of information stored:

• BlockMeta: Meta information about each block
• Block part: Parts of each block, aggregated w/ PartSet
• Commit: The commit part of each block, for gossiping precommit votes

Currently the precommit signatures are duplicated in the Block parts as well as the Commit. In the future this may change, perhaps by moving the Commit data outside the Block. (TODO)

// NOTE: BlockStore methods will panic if they encounter errors // deserializing loaded data, indicating probable corruption on disk.

func NewBlockStore

func NewBlockStore(db dbm.DB) *BlockStore

NewBlockStore returns a new BlockStore with the given DB, initialized to the last height that was committed to the DB.

func (*BlockStore) Height

func (bs *BlockStore) Height() int64

Height returns the last known contiguous block height.

func (*BlockStore) LoadBlock

func (bs *BlockStore) LoadBlock(height int64) *types.Block

LoadBlock returns the block with the given height. If no block is found for that height, it returns nil.

func (*BlockStore) LoadBlockCommit

func (bs *BlockStore) LoadBlockCommit(height int64) *types.Commit

LoadBlockCommit returns the Commit for the given height. This commit consists of the +2/3 and other Precommit-votes for block at `height`, and it comes from the block.LastCommit for `height+1`. If no commit is found for the given height, it returns nil.

func (*BlockStore) LoadBlockMeta

func (bs *BlockStore) LoadBlockMeta(height int64) *types.BlockMeta

LoadBlockMeta returns the BlockMeta for the given height. If no block is found for the given height, it returns nil.

func (*BlockStore) LoadBlockPart

func (bs *BlockStore) LoadBlockPart(height int64, index int) *types.Part

LoadBlockPart returns the Part at the given index from the block at the given height. If no part is found for the given height and index, it returns nil.

func (*BlockStore) LoadSeenCommit

func (bs *BlockStore) LoadSeenCommit(height int64) *types.Commit

LoadSeenCommit returns the locally seen Commit for the given height. This is useful when we've seen a commit, but there has not yet been a new block at `height + 1` that includes this commit in its block.LastCommit.

func (*BlockStore) SaveBlock

func (bs *BlockStore) SaveBlock(block *types.Block, blockParts *types.PartSet, seenCommit *types.Commit)

SaveBlock persists the given block, blockParts, and seenCommit to the underlying db. blockParts: Must be parts of the block seenCommit: The +2/3 precommits that were seen which committed at height.

If all the nodes restart after committing a block,
we need this to reload the precommits to catch-up nodes to the
most recent height.  Otherwise they'd stall at H-1.

type BlockStoreStateJSON

type BlockStoreStateJSON struct {
	Height int64 `json:"height"`
}

BlockStoreStateJSON is the block store state JSON structure.

func LoadBlockStoreStateJSON

func LoadBlockStoreStateJSON(db dbm.DB) BlockStoreStateJSON

LoadBlockStoreStateJSON returns the BlockStoreStateJSON as loaded from disk. If no BlockStoreStateJSON was previously persisted, it returns the zero value.

func (BlockStoreStateJSON) Save

func (bsj BlockStoreStateJSON) Save(db dbm.DB)

Save persists the blockStore state to the database as JSON.