blkstorage

package
v0.0.0-...-e295948 Latest Latest
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 Go to latest Published: Oct 26, 2020 License: Apache-2.0 Imports: 31 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	IndexableAttrBlockNum        = IndexableAttr("BlockNum")
	IndexableAttrBlockHash       = IndexableAttr("BlockHash")
	IndexableAttrTxID            = IndexableAttr("TxID")
	IndexableAttrBlockNumTranNum = IndexableAttr("BlockNumTranNum")
)

constants for indexable attributes

View Source 
const (
	// ChainsDir is the name of the directory containing the channel ledgers.
	ChainsDir = "chains"
	// IndexDir is the name of the directory containing all block indexes across ledgers.
	IndexDir = "index"
)

Variables

View Source 
var (
	// ErrNotFoundInIndex is used to indicate missing entry in the index
	ErrNotFoundInIndex = ledger.NotFoundInIndexErr("")

	// ErrAttrNotIndexed is used to indicate that an attribute is not indexed
	ErrAttrNotIndexed = errors.New("attribute not indexed")
)
View Source 
var ErrUnexpectedEndOfBlockfile = errors.New("unexpected end of blockfile")

ErrUnexpectedEndOfBlockfile error used to indicate an unexpected end of a file segment this can happen mainly if a crash occurs during appending a block and partial block contents get written towards the end of the file

Functions

func ClearPreResetHeight 

func ClearPreResetHeight(blockStorageDir string, ledgerIDs []string) error

ClearPreResetHeight deletes the files that contain the last recorded reset heights for the specified ledgers

func DeleteBlockStoreIndex 

func DeleteBlockStoreIndex(blockStorageDir string) error

DeleteBlockStoreIndex deletes block store index file

func LoadPreResetHeight 

func LoadPreResetHeight(blockStorageDir string, ledgerIDs []string) (map[string]uint64, error)

LoadPreResetHeight searches the preResetHeight files for the specified ledgers and returns a map of channelname to the last recorded block height during one of the reset operations.

func ResetBlockStore 

func ResetBlockStore(blockStorageDir string) error

ResetBlockStore drops the block storage index and truncates the blocks files for all channels/ledgers to genesis blocks

func Rollback 

func Rollback(blockStorageDir, ledgerID string, targetBlockNum uint64, indexConfig *IndexConfig) error

Rollback reverts changes made to the block store beyond a given block number.

func ValidateRollbackParams 

func ValidateRollbackParams(blockStorageDir, ledgerID string, targetBlockNum uint64) error

ValidateRollbackParams performs necessary validation on the input given for the rollback operation.

Types

type BlockStore 

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

BlockStore - filesystem based implementation for `BlockStore`

func (*BlockStore) AddBlock 

func (store *BlockStore) AddBlock(block *common.Block) error

AddBlock adds a new block

func (*BlockStore) ExportTxIds 

func (store *BlockStore) ExportTxIds(dir string, hasher hash.Hash) (map[string][]byte, error)

ExportTxIds creates two files in the specified dir and returns a map that contains the mapping between the names of the files and their hashes. Technically, the TxIDs appear in the sort order of radix-sort/shortlex. However, since practically all the TxIDs are of same length, so the sort order would be the lexical sort order

func (*BlockStore) GetBlockchainInfo 

func (store *BlockStore) GetBlockchainInfo() (*common.BlockchainInfo, error)

GetBlockchainInfo returns the current info about blockchain

func (*BlockStore) RetrieveBlockByHash 

func (store *BlockStore) RetrieveBlockByHash(blockHash []byte) (*common.Block, error)

RetrieveBlockByHash returns the block for given block-hash

func (*BlockStore) RetrieveBlockByNumber 

func (store *BlockStore) RetrieveBlockByNumber(blockNum uint64) (*common.Block, error)

RetrieveBlockByNumber returns the block at a given blockchain height

func (*BlockStore) RetrieveBlockByTxID 

func (store *BlockStore) RetrieveBlockByTxID(txID string) (*common.Block, error)

RetrieveBlockByTxID returns the block for the specified txID

func (*BlockStore) RetrieveBlocks 

func (store *BlockStore) RetrieveBlocks(startNum uint64) (ledger.ResultsIterator, error)

RetrieveBlocks returns an iterator that can be used for iterating over a range of blocks

func (*BlockStore) RetrieveTxByBlockNumTranNum 

func (store *BlockStore) RetrieveTxByBlockNumTranNum(blockNum uint64, tranNum uint64) (*common.Envelope, error)

RetrieveTxByBlockNumTranNum returns a transaction for the given <blockNum, tranNum>

func (*BlockStore) RetrieveTxByID 

func (store *BlockStore) RetrieveTxByID(txID string) (*common.Envelope, error)

RetrieveTxByID returns a transaction for given transaction id

func (*BlockStore) RetrieveTxValidationCodeByTxID 

func (store *BlockStore) RetrieveTxValidationCodeByTxID(txID string) (peer.TxValidationCode, error)

RetrieveTxValidationCodeByTxID returns the validation code for the specified txID

func (*BlockStore) Shutdown 

func (store *BlockStore) Shutdown()

Shutdown shuts down the block store

type BlockStoreProvider 

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

BlockStoreProvider provides handle to block storage - this is not thread-safe

func NewProvider 

func NewProvider(conf *Conf, indexConfig *IndexConfig, metricsProvider metrics.Provider) (*BlockStoreProvider, error)

NewProvider constructs a filesystem based block store provider

func (*BlockStoreProvider) Close 

func (p *BlockStoreProvider) Close()

Close closes the BlockStoreProvider

func (*BlockStoreProvider) Exists 

func (p *BlockStoreProvider) Exists(ledgerid string) (bool, error)

Exists tells whether the BlockStore with given id exists

func (*BlockStoreProvider) List 

func (p *BlockStoreProvider) List() ([]string, error)

List lists the ids of the existing ledgers

func (*BlockStoreProvider) Open 

func (p *BlockStoreProvider) Open(ledgerid string) (*BlockStore, error)

Open opens a block store for given ledgerid. If a blockstore is not existing, this method creates one This method should be invoked only once for a particular ledgerid

type Conf 

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

Conf encapsulates all the configurations for `BlockStore`

func NewConf 

func NewConf(blockStorageDir string, maxBlockfileSize int) *Conf

NewConf constructs new `Conf`. blockStorageDir is the top level folder under which `BlockStore` manages its data

type IndexConfig 

type IndexConfig struct {
	AttrsToIndex []IndexableAttr
}

IndexConfig - a configuration that includes a list of attributes that should be indexed

func (*IndexConfig) Contains 

func (c *IndexConfig) Contains(indexableAttr IndexableAttr) bool

Contains returns true iff the supplied parameter is present in the IndexConfig.AttrsToIndex

type IndexableAttr 

type IndexableAttr string

IndexableAttr represents an indexable attribute

type TxIDIndexValue 

type TxIDIndexValue struct {
	BlkLocation          []byte   `protobuf:"bytes,1,opt,name=blk_location,json=blkLocation,proto3" json:"blk_location,omitempty"`
	TxLocation           []byte   `protobuf:"bytes,2,opt,name=tx_location,json=txLocation,proto3" json:"tx_location,omitempty"`
	TxValidationCode     int32    `protobuf:"varint,3,opt,name=tx_validation_code,json=txValidationCode,proto3" json:"tx_validation_code,omitempty"`
	XXX_NoUnkeyedLiteral struct{} `json:"-"`
	XXX_unrecognized     []byte   `json:"-"`
	XXX_sizecache        int32    `json:"-"`
}

func (*TxIDIndexValue) Descriptor 

func (*TxIDIndexValue) Descriptor() ([]byte, []int)

func (*TxIDIndexValue) GetBlkLocation 

func (m *TxIDIndexValue) GetBlkLocation() []byte

func (*TxIDIndexValue) GetTxLocation 

func (m *TxIDIndexValue) GetTxLocation() []byte

func (*TxIDIndexValue) GetTxValidationCode 

func (m *TxIDIndexValue) GetTxValidationCode() int32

func (*TxIDIndexValue) ProtoMessage 

func (*TxIDIndexValue) ProtoMessage()

func (*TxIDIndexValue) Reset 

func (m *TxIDIndexValue) Reset()

func (*TxIDIndexValue) String 

func (m *TxIDIndexValue) String() string

func (*TxIDIndexValue) XXX_DiscardUnknown 

func (m *TxIDIndexValue) XXX_DiscardUnknown()

func (*TxIDIndexValue) XXX_Marshal 

func (m *TxIDIndexValue) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*TxIDIndexValue) XXX_Merge 

func (m *TxIDIndexValue) XXX_Merge(src proto.Message)

func (*TxIDIndexValue) XXX_Size 

func (m *TxIDIndexValue) XXX_Size() int

func (*TxIDIndexValue) XXX_Unmarshal 

func (m *TxIDIndexValue) XXX_Unmarshal(b []byte) error

Source Files

View all Source files

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