Struct db::BlockChainDatabase

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pub struct BlockChainDatabase<T> where
    T: KeyValueDatabase,  { /* fields omitted */ }

Methods

impl BlockChainDatabase<CacheDatabase<AutoFlushingOverlayDatabase<DiskDatabase>>>

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pub fn open_at_path<P>(path: P, total_cache: usize) -> Result<Self, Error> where     P: AsRef<Path>,

impl BlockChainDatabase<MemoryDatabase>

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pub fn init_test_chain(blocks: Vec<IndexedBlock>) -> Self

impl<T> BlockChainDatabase<CacheDatabase<AutoFlushingOverlayDatabase<T>>> where     T: KeyValueDatabase,

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pub fn open_with_cache(db: T) -> Self

impl<T> BlockChainDatabase<T> where     T: KeyValueDatabase,

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pub fn open(db: T) -> Self

pub fn best_block(&self) -> BestBlock

pub fn fork(     &self,     side_chain: SideChainOrigin ) -> Result<ForkChainDatabase<T>, Error>

pub fn switch_to_fork(&self, fork: ForkChainDatabase<T>) -> Result<(), Error>

pub fn block_origin(     &self,     header: &IndexedBlockHeader ) -> Result<BlockOrigin, Error>

pub fn insert(&self, block: IndexedBlock) -> Result<(), Error>

pub fn canonize(&self, hash: &H256) -> Result<(), Error>

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Marks block as a new best block. Block must be already inserted into db, and it's parent must be current best block. Updates meta data.

pub fn decanonize(&self) -> Result<H256, Error>

Trait Implementations

impl<T> BlockHeaderProvider for BlockChainDatabase<T> where     T: KeyValueDatabase,

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fn block_header_bytes(&self, block_ref: BlockRef) -> Option<Bytes>

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resolves header bytes by block reference (number/hash)

fn block_header(&self, block_ref: BlockRef) -> Option<BlockHeader>

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resolves header bytes by block reference (number/hash)

impl<T> BlockProvider for BlockChainDatabase<T> where     T: KeyValueDatabase,

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fn block_number(&self, hash: &H256) -> Option<u32>

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resolves number by block hash

fn block_hash(&self, number: u32) -> Option<H256>

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resolves hash by block number

fn block(&self, block_ref: BlockRef) -> Option<Block>

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resolves deserialized block body by block reference (number/hash)

fn contains_block(&self, block_ref: BlockRef) -> bool

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returns true if store contains given block

Important traits for Vec<u8>

impl Write for Vec<u8>

fn block_transaction_hashes(&self, block_ref: BlockRef) -> Vec<H256>

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resolves list of block transactions by block reference (number/hash)

Important traits for Vec<u8>

impl Write for Vec<u8>

fn block_transactions(&self, block_ref: BlockRef) -> Vec<Transaction>

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returns all transactions in the block by block reference (number/hash)

impl<T> IndexedBlockProvider for BlockChainDatabase<T> where     T: KeyValueDatabase,

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fn indexed_block_header(     &self,     block_ref: BlockRef ) -> Option<IndexedBlockHeader>

fn indexed_block(&self, block_ref: BlockRef) -> Option<IndexedBlock>

Important traits for Vec<u8>

impl Write for Vec<u8>

fn indexed_block_transactions(     &self,     block_ref: BlockRef ) -> Vec<IndexedTransaction>

impl<T> TransactionMetaProvider for BlockChainDatabase<T> where     T: KeyValueDatabase,

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fn transaction_meta(&self, hash: &H256) -> Option<TransactionMeta>

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Returns None if transactin with given hash does not exist Otherwise returns transaction meta object

impl<T> TransactionProvider for BlockChainDatabase<T> where     T: KeyValueDatabase,

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fn transaction_bytes(&self, hash: &H256) -> Option<Bytes>

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Resolves transaction body bytes by transaction hash.

fn transaction(&self, hash: &H256) -> Option<Transaction>

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Resolves serialized transaction info by transaction hash.

fn contains_transaction(&self, hash: &H256) -> bool

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Returns true if store contains given transaction.

impl<T> TransactionOutputProvider for BlockChainDatabase<T> where     T: KeyValueDatabase,

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fn transaction_output(     &self,     prevout: &OutPoint,     _transaction_index: usize ) -> Option<TransactionOutput>

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Returns transaction output.

fn is_spent(&self, prevout: &OutPoint) -> bool

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Returns true if we know that output is double spent.

impl<T> BlockChain for BlockChainDatabase<T> where     T: KeyValueDatabase,

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fn insert(&self, block: IndexedBlock) -> Result<(), Error>

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Inserts new block into blockchain

fn rollback_best(&self) -> Result<H256, Error>

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Rollbacks single best block. Returns new best block hash

fn canonize(&self, block_hash: &H256) -> Result<(), Error>

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Canonizes block with given hash

fn decanonize(&self) -> Result<H256, Error>

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Decanonizes best block

fn block_origin(     &self,     header: &IndexedBlockHeader ) -> Result<BlockOrigin, Error>

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Checks block origin

impl<T> Forkable for BlockChainDatabase<T> where     T: KeyValueDatabase,

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fn fork<'a>(     &'a self,     side_chain: SideChainOrigin ) -> Result<Box<ForkChain + 'a>, Error>

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Forks current blockchain. Lifetime guarantees fork relationship with canon chain.

fn switch_to_fork<'a>(&self, fork: Box<ForkChain + 'a>) -> Result<(), Error>

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Switches blockchain to given fork. Lifetime guarantees that fork comes from this canon chain.

impl<T> CanonStore for BlockChainDatabase<T> where     T: KeyValueDatabase,

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fn as_store(&self) -> &Store

impl<T> Store for BlockChainDatabase<T> where     T: KeyValueDatabase,

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fn best_block(&self) -> BestBlock

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get best block

fn best_header(&self) -> BlockHeader

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get best header

fn difficulty(&self) -> f64

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get blockchain difficulty

impl<T> ConfigStore for BlockChainDatabase<T> where     T: KeyValueDatabase,

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fn consensus_fork(&self) -> Result<Option<String>, Error>

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get consensus_fork this database is configured for

fn set_consensus_fork(&self, consensus_fork: &str) -> Result<(), Error>

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set consensus_fork this database is configured for