Struct hotshot::types::handle::SystemContextHandle
source · pub struct SystemContextHandle<TYPES: NodeType, I: NodeImplementation<TYPES>, V: Versions> {
pub(crate) output_event_stream: (Sender<Event<TYPES>>, InactiveReceiver<Event<TYPES>>),
pub(crate) internal_event_stream: (Sender<Arc<HotShotEvent<TYPES>>>, InactiveReceiver<Arc<HotShotEvent<TYPES>>>),
pub(crate) consensus_registry: ConsensusTaskRegistry<HotShotEvent<TYPES>>,
pub(crate) network_registry: NetworkTaskRegistry,
pub hotshot: Arc<SystemContext<TYPES, I, V>>,
pub(crate) storage: Arc<RwLock<I::Storage>>,
pub network: Arc<I::Network>,
pub memberships: Arc<Memberships<TYPES>>,
}
Expand description
Event streaming handle for a SystemContext
instance running in the background
This type provides the means to message and interact with a background SystemContext
instance,
allowing the ability to receive Event
s from it, send transactions to it, and interact with
the underlying storage.
Fields§
§output_event_stream: (Sender<Event<TYPES>>, InactiveReceiver<Event<TYPES>>)
§internal_event_stream: (Sender<Arc<HotShotEvent<TYPES>>>, InactiveReceiver<Arc<HotShotEvent<TYPES>>>)
access to the internal event stream, in case we need to, say, shut something down
consensus_registry: ConsensusTaskRegistry<HotShotEvent<TYPES>>
registry for controlling consensus tasks
network_registry: NetworkTaskRegistry
registry for controlling network tasks
hotshot: Arc<SystemContext<TYPES, I, V>>
Internal reference to the underlying SystemContext
storage: Arc<RwLock<I::Storage>>
Reference to the internal storage for consensus datum.
network: Arc<I::Network>
Networks used by the instance of hotshot
memberships: Arc<Memberships<TYPES>>
Memberships used by consensus
Implementations§
source§impl<TYPES: NodeType, I: NodeImplementation<TYPES> + 'static, V: Versions> SystemContextHandle<TYPES, I, V>
impl<TYPES: NodeType, I: NodeImplementation<TYPES> + 'static, V: Versions> SystemContextHandle<TYPES, I, V>
sourcepub fn add_task<S: TaskState<Event = HotShotEvent<TYPES>> + 'static>(
&mut self,
task_state: S
)
pub fn add_task<S: TaskState<Event = HotShotEvent<TYPES>> + 'static>( &mut self, task_state: S )
Adds a hotshot consensus-related task to the SystemContextHandle
.
sourcepub fn event_stream(&self) -> impl Stream<Item = Event<TYPES>>
pub fn event_stream(&self) -> impl Stream<Item = Event<TYPES>>
obtains a stream to expose to the user
sourcepub fn event_stream_known_impl(&self) -> Receiver<Event<TYPES>>
pub fn event_stream_known_impl(&self) -> Receiver<Event<TYPES>>
HACK so we can know the types when running tests… there are two cleaner solutions:
- make the stream generic and in nodetypes or nodeimpelmentation
- type wrapper
sourcepub fn internal_event_stream_sender(&self) -> Sender<Arc<HotShotEvent<TYPES>>>
pub fn internal_event_stream_sender(&self) -> Sender<Arc<HotShotEvent<TYPES>>>
HACK so we can create dependency tasks when running tests
sourcepub fn internal_event_stream_receiver_known_impl(
&self
) -> Receiver<Arc<HotShotEvent<TYPES>>>
pub fn internal_event_stream_receiver_known_impl( &self ) -> Receiver<Arc<HotShotEvent<TYPES>>>
HACK so we can know the types when running tests… there are two cleaner solutions:
- make the stream generic and in nodetypes or nodeimpelmentation
- type wrapper NOTE: this is only used for sanity checks in our tests
sourcepub async fn decided_state(&self) -> Arc<TYPES::ValidatedState>
pub async fn decided_state(&self) -> Arc<TYPES::ValidatedState>
Get the last decided validated state of the SystemContext
instance.
§Panics
If the internal consensus is in an inconsistent state.
sourcepub async fn state(
&self,
view: TYPES::Time
) -> Option<Arc<TYPES::ValidatedState>>
pub async fn state( &self, view: TYPES::Time ) -> Option<Arc<TYPES::ValidatedState>>
Get the validated state from a given view
.
Returns the requested state, if the SystemContext
is tracking this view. Consensus
tracks views that have not yet been decided but could be in the future. This function may
return None
if the requested view has already been decided (but see
decided_state
) or if there is no path for the requested
view to ever be decided.
sourcepub async fn decided_leaf(&self) -> Leaf<TYPES>
pub async fn decided_leaf(&self) -> Leaf<TYPES>
Get the last decided leaf of the SystemContext
instance.
§Panics
If the internal consensus is in an inconsistent state.
sourcepub fn try_decided_leaf(&self) -> Option<Leaf<TYPES>>
pub fn try_decided_leaf(&self) -> Option<Leaf<TYPES>>
Tries to get the most recent decided leaf, returning instantly if we can’t acquire the lock.
§Panics
Panics if internal consensus is in an inconsistent state.
sourcepub async fn submit_transaction(
&self,
tx: TYPES::Transaction
) -> Result<(), HotShotError<TYPES>>
pub async fn submit_transaction( &self, tx: TYPES::Transaction ) -> Result<(), HotShotError<TYPES>>
Submits a transaction to the backing SystemContext
instance.
The current node broadcasts the transaction to all nodes on the network.
§Errors
Will return a HotShotError
if some error occurs in the underlying
SystemContext
instance.
sourcepub fn consensus(&self) -> Arc<RwLock<Consensus<TYPES>>>
pub fn consensus(&self) -> Arc<RwLock<Consensus<TYPES>>>
Get the underlying consensus state for this SystemContext
sourcepub async fn shut_down(&mut self)
pub async fn shut_down(&mut self)
Shut down the the inner hotshot and wait until all background threads are closed.
sourcepub fn next_view_timeout(&self) -> u64
pub fn next_view_timeout(&self) -> u64
return the timeout for a view of the underlying SystemContext
sourcepub async fn leader(&self, view_number: TYPES::Time) -> TYPES::SignatureKey
pub async fn leader(&self, view_number: TYPES::Time) -> TYPES::SignatureKey
Wrapper for HotShotConsensusApi
’s leader
function
sourcepub fn public_key(&self) -> TYPES::SignatureKey
pub fn public_key(&self) -> TYPES::SignatureKey
Wrapper to get this node’s public key
sourcepub fn external_channel_sender(&self) -> Sender<Event<TYPES>>
pub fn external_channel_sender(&self) -> Sender<Event<TYPES>>
Get the sender side of the external event stream for testing purpose
sourcepub fn internal_channel_sender(&self) -> Sender<Arc<HotShotEvent<TYPES>>>
pub fn internal_channel_sender(&self) -> Sender<Arc<HotShotEvent<TYPES>>>
Get the sender side of the internal event stream for testing purpose
sourcepub fn storage(&self) -> Arc<RwLock<I::Storage>>
pub fn storage(&self) -> Arc<RwLock<I::Storage>>
Provides a reference to the underlying storage for this SystemContext
, allowing access to
historical data
sourcepub fn spawn_initial_timeout_task(&self) -> JoinHandle<()>
pub fn spawn_initial_timeout_task(&self) -> JoinHandle<()>
A helper function to spawn the initial timeout task from a given SystemContextHandle
.
Trait Implementations§
source§impl<TYPES: NodeType, I: NodeImplementation<TYPES>, V: Versions> ConsensusApi<TYPES, I> for SystemContextHandle<TYPES, I, V>
impl<TYPES: NodeType, I: NodeImplementation<TYPES>, V: Versions> ConsensusApi<TYPES, I> for SystemContextHandle<TYPES, I, V>
source§fn total_nodes(&self) -> NonZeroUsize
fn total_nodes(&self) -> NonZeroUsize
n
.source§fn builder_timeout(&self) -> Duration
fn builder_timeout(&self) -> Duration
source§fn send_event<'life0, 'async_trait>(
&'life0 self,
event: Event<TYPES>
) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>where
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&'life0 self,
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hotshot-consensus
.source§fn public_key(&self) -> &TYPES::SignatureKey
fn public_key(&self) -> &TYPES::SignatureKey
source§fn private_key(&self) -> &<TYPES::SignatureKey as SignatureKey>::PrivateKey
fn private_key(&self) -> &<TYPES::SignatureKey as SignatureKey>::PrivateKey
Auto Trait Implementations§
impl<TYPES, I, V> Freeze for SystemContextHandle<TYPES, I, V>
impl<TYPES, I, V> !RefUnwindSafe for SystemContextHandle<TYPES, I, V>
impl<TYPES, I, V> Send for SystemContextHandle<TYPES, I, V>
impl<TYPES, I, V> Sync for SystemContextHandle<TYPES, I, V>
impl<TYPES, I, V> Unpin for SystemContextHandle<TYPES, I, V>
impl<TYPES, I, V> !UnwindSafe for SystemContextHandle<TYPES, I, V>
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builds.§fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self
fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self
.tap_ref()
only in debug builds, and is erased in release
builds.§fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self
fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self
.tap_ref_mut()
only in debug builds, and is erased in release
builds.§fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Self
fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Self
.tap_deref()
only in debug builds, and is erased in release
builds.