Struct sc_client_api::in_mem::Backend [−][src]
Expand description
In-memory backend. Keeps all states and blocks in memory.
Warning: Doesn’t support all the features necessary for a proper database. Only use this struct for testing purposes. Do NOT use in production.
Implementations
Trait Implementations
Insert auxiliary data into key-value store. Read more
type BlockImportOperation = BlockImportOperation<Block>
type BlockImportOperation = BlockImportOperation<Block>
Associated block insertion operation type.
type Blockchain = Blockchain<Block>
type Blockchain = Blockchain<Block>
Associated blockchain backend type.
type State = InMemoryBackend<HashFor<Block>>
type State = InMemoryBackend<HashFor<Block>>
Associated state backend type.
type OffchainStorage = OffchainStorage
type OffchainStorage = OffchainStorage
Offchain workers local storage.
Begin a new block insertion transaction with given parent block id. Read more
fn begin_state_operation(
&self,
operation: &mut Self::BlockImportOperation,
block: BlockId<Block>
) -> Result<()>
fn begin_state_operation(
&self,
operation: &mut Self::BlockImportOperation,
block: BlockId<Block>
) -> Result<()>
Note an operation to contain state transition.
Commit block insertion.
fn finalize_block(
&self,
block: BlockId<Block>,
justification: Option<Justification>
) -> Result<()>
fn finalize_block(
&self,
block: BlockId<Block>,
justification: Option<Justification>
) -> Result<()>
Finalize block with given Id. Read more
fn append_justification(
&self,
block: BlockId<Block>,
justification: Justification
) -> Result<()>
fn append_justification(
&self,
block: BlockId<Block>,
justification: Justification
) -> Result<()>
Append justification to the block with the given Id. Read more
Returns reference to blockchain backend.
Returns current usage statistics.
Returns reference to changes trie storage.
Returns a handle to offchain storage.
Returns state backend with post-state of given block.
Attempts to revert the chain by n
blocks. If revert_finalized
is set it will attempt to
revert past any finalized block, this is unsafe and can potentially leave the node in an
inconsistent state. Read more
Discard non-best, unfinalized leaf block.
Gain access to the import lock around this backend. Read more
Returns true if state for given block is available.
Insert auxiliary data into key-value store.
Returns true if the state for given block is available locally.
Returns reference to blockchain backend. Read more
Auto Trait Implementations
impl<Block> !RefUnwindSafe for Backend<Block>
impl<Block> Unpin for Backend<Block> where
<Block as Block>::Hash: Unpin,
<<Block as Block>::Header as Header>::Hashing: Unpin,
impl<Block> !UnwindSafe for Backend<Block>
Blanket Implementations
Mutably borrows from an owned value. Read more
impl<T> Downcast for T where
T: Any,
impl<T> Downcast for T where
T: Any,
Convert Box<dyn Trait>
(where Trait: Downcast
) to Box<dyn Any>
. Box<dyn Any>
can
then be further downcast
into Box<ConcreteType>
where ConcreteType
implements Trait
. Read more
pub fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
pub fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
Convert Rc<Trait>
(where Trait: Downcast
) to Rc<Any>
. Rc<Any>
can then be
further downcast
into Rc<ConcreteType>
where ConcreteType
implements Trait
. Read more
Convert &Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &Any
’s vtable from &Trait
’s. Read more
pub fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
pub fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
Convert &mut Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &mut Any
’s vtable from &mut Trait
’s. Read more
Instruments this type with the provided Span
, returning an
Instrumented
wrapper. Read more
Instruments this type with the provided Span
, returning an
Instrumented
wrapper. Read more
type Output = T
type Output = T
Should always be Self
The counterpart to unchecked_from
.
Consume self to return an equivalent value of T
.
pub fn vzip(self) -> V
Attaches the provided Subscriber
to this type, returning a
WithDispatch
wrapper. Read more
Attaches the current default Subscriber
to this type, returning a
WithDispatch
wrapper. Read more